Airlift (versions) and method of its operation

FIELD: water purification.

SUBSTANCE: airlift contains fixed to each other and coaxially-mounted inlet 1 and outlet 2 sections, made from pipes of different diameter. In place of pipe connection seal 3 is located. End of section 1 pipe, fixed in end part of section 2 pipe, is equipped with disperser 4. According to first version of invention free end of inlet section 1 pipe is fixed in passage canal 9 ┤ -shaped tee 8, supplied with side boss 11 in form of connecting pipe for connection to pipeline 12 of compressed air supply, fixed along airlift length by means of clamps 13. According to second version of invention free end of inlet section 1 pipe is fixed in passage canal of ⊥ -shaped tee, supplied with side bosses with connected passage canals, one of which is made in form of connecting pipe for connection to pipeline of compressed air supply, the second being made in form of shut-off valve seat. Shut-off valve is supplied with tie and float and is movably fixed on inlet and outlet sections. According to third version of invention free end of inlet section 1 pipe is fixed in passage canal of running-water vortical chamber, supplied with tangent connecting pipe for introduction of compressed air.

EFFECT: increase of efficiency and reliability of airlift with ensuring possibility of its use as means for saturation of transferred liquid with air.

36 cl, 6 dwg

 

The invention relates to structural elements of biological treatment plants of domestic wastewater.

From the prior art construction of airlifts ring or Central schemes compressed air in the liquid, the rise of which is due to the energy mix with it the air (see "technical dictionary", ed. "Soviet encyclopedia", Moscow, 80,, p.100).

Lack of airlifts made on these schemes is the low efficiency, due to the fact that the flow area of water-lifting pipe is reduced by the value of the sectional area of the pipe for compressed air.

The closest analogue adopted for the prototype, the proposed invention is the air pump side flow path of compressed air. In this scheme, the supply of air in the water pipe through the nozzle, embedded in the wall of the pipe at its input slice (see the description of EN NO. 2201405, 02F 3/02, 2002).

The disadvantage of this airlift is unreliable fastening the nozzle to the water pipe, with the possible excesses of the pipeline for the supply of compressed air, which generally reduces the reliability of the airlift. In addition, the installation of air is difficult to control the accuracy of setting the height of the bottom (intake) cut the water pipe, while absent when estva lock it in position.

The technical problem solved by the invention is to improve the efficiency and reliability of air, ensuring the possibility of its use as a means for saturating the air pumped liquid.

The solution of the stated problem provided that the airlift, comprising a housing in the form of water-lifting pipe (VP) with a curved output section equipped with a nozzle located in the area of its input slice, and provided with a fitting for connection to a supply line of compressed air, according to the invention the EAP is made of pipes of different diameters, the ends of which are connected with the formation of at least two, coaxial input (AC) and output sections (HIGH), this input has HIGH dispersant (D), and the free end of the pipe SU enshrined in pass-through channel ┤-shaped tee (T)with lateral tide in the form of a fitting for connection to a supply line of compressed air, supplied with nozzle channel in communication with the reduced channel T, with curved outlet pipe is made with a diameter less than the diameter of the app.

In a variant of the invention the EAP is made of pipes of different diameters, the ends of which are connected with the formation of at least two, coaxial, sun and HIGH, while the input in HEIGHT and the height of the set D, the free end of the pipe SU enshrined in the pass-Kahn is Le ⊥ -type T, provided with side tides communicated with the through channels, one of which is executed in the form of a fitting for connection to a supply line of compressed air and the other is made in the form of a seat shut-off valve, which is equipped with traction and float and slidably mounted on the input and output sections, with curved outlet pipe is made with a diameter less than the diameter of the output section.

In another embodiment of the invention VD is made of pipes of different diameters, the ends of which are connected with the formation of at least two, coaxial, sun and HIGH, while the input in HEIGHT and the height of the set D, the free end of the pipe SU enshrined in the flow channel the flow of the vortex chamber, provided with a tangential nozzle for entering compressed air, with curved outlet pipe is made with a diameter less than the diameter of the output section.

In versions of the swirl chamber provided with a coaxially located cylindrical rings installed with the formation of the closed bottom of the circular vortex channel, over which is a vortex screen; a dispersant in the form of metal mesh is fixed to the output cutoff tube input section; a dispersant made in the form of longitudinal slits in the dead end part of the tube input section and turbulizer in the form of plates, to ascertain the tion in the output section on a hollow pipe end face of the input section; on the fitting to enter the compressed air fixed segment of the pipeline, which is fixed by the height of the airlift, with the free end of this pipe is supplied with the adapter; the diameter of the curved outlet area is 0.3-0.6 diameter of the main part of the output section; the inner diameter of the input section is 0.4-0.6mm inner diameter of the output section; the lower end portion of the airlift fixed plate focus, with the tab at the lower edge of the end face in the length of at least 1 cm; length of the input section is not less than 0.3 of the length of the output section; height of aircraft and HIGH speed dispersers are; SU and H form a telescopic connection; pull valve are adjustable; the pipe sections and the tee is made of polymeric material, the polymeric material is a polyethylene or propylene, or vinyl plastic or other similar materials.

The solution of the stated problem is also provided that the method of operation of air includes the air supply into the input area of the water-lifting pipe, according to the invention water-lifting pipe is made in the form ∩-shaped siphon with shut-off valve and impeller located in the input branch ∩-shaped siphon, the air in the airlift carried out before filling the tribe ∩-shaped siphon the gas-liquid mixture, and off er is the IFU at the expense of planting shut-off valve to the seat, equipped on the input slice ∩-shaped siphon, whereby the output slice ∩-shaped siphon is located below the level of the float valve in the closed position.

In the proposed airlifts due to the dispersion of the gas phase during transfer of liquid is provided by a sharp increase in the surface contact of the gas and liquid phases with the saturation of the air-liquid phase. In addition, due to more uniform distribution of the gas phase in the liquid increases transfer efficiency and reduced energy consumption.

The invention is illustrated in the drawings, in which figure 1, 2, 4, 6 shows a General view options airlift (longitudinal section); figure 3 - cross section a-a of figure 2, figure 5 - cross section b-B figure 4.

Airlift contains fixed between a and located coaxial input 1 and output 2 sections, made of pipes of different diameters. These pipes can be connected to each other telescopically, i.e. with the possibility of sliding relative to each other. In place telescopical connection is the seal 3. The end of the pipe section 1, secured in the end portion of the pipe section 2, equipped with a disperser 4, made for example in the form of a metal grid. In addition, the dispersant may be in the form of longitudinal slots 5 in the hollow end of the pipe section 1 and turbulizer in the form of ring you blunt 6, established in section 2 above in a hollow end of the tube 1. It is also advisable to section 2 was equipped with a dispersant, made in the form of a stripe height of this section of the annular projections 6 and plate 7. Section 2 on the section and is curved and is made in the form of a plum, with a diameter less than the diameter of the main part of section 2. In the first variant of the invention at the free end of the pipe section 1 is fixed ┤-neck tee 8 with reduced channel 9, is in communication with the nozzle channel 10, is made in the side tide 11. Side a burst of 11 made an l-shape with curved inlet pipe located parallel to the pipe section 1, and is designed as a nozzle, which is fixed to the segment of the pipeline 12 for air supply, attached along the length of the airlift by clamps 13. At the free end of the pipeline 12 is fixed adapter (conventionally not shown) for connection to the pressure line of the air supply. At the end of the tee 8 installed plate stop 14, partially protruding over the end of the tee on the value not less than 1 cm of the Pipe sections 1 and 2, as well as tee 8 and the stop 14 can be made of polymer material, which can be used is polyethylene or propylene, or vinyl plastic or other similar materials, i.e. materials with a long service life due to the fact that they are not subject to interviewer who Ziya and decay.

In another embodiment of the invention the free end of the pipe section equipped ⊥-neck tee with lateral tides 15 and 16 with reported between the channels 17 and 18, respectively, which are communicated with each other. A burst of 16 in the form of fitting for connection to a supply line of compressed air, and a burst of 15 made in the form of a saddle cut-off valve 19, which is equipped with an adjustable pull 20 with the float 21. Rod 20 slidably mounted on the sections 1 and 2. In the rest of this variant is the same as above.

The following variant of the invention similar to the above with the only difference that at the free end of the first pipe section 1 is installed flowing swirl chamber 22, provided with a tangential nozzle 23 to the input of compressed air. The swirl chamber is also provided with a coaxially located cylindrical shell 24 that is installed with the formation of the closed bottom of the circular vortex channel 25, which is a vortex screen 26.

In all embodiments of the invention it is expedient that the internal diameter of the input section 1 were 0.4-0.6mm inner diameter of the output section 2. This is necessary to prevent the merger of air bubbles, splintered on the dispersant. At smaller or larger values of this parameter, respectively, or there is a merger of air bubbles (fragmented on what operatora), or the dimensions of the airlift significantly increase, and it unnecessarily clutters the internal volume of the chamber installation of biological treatment (UBO). It is also advisable that the length of the input section 1 was not less than 0.3 length of the output section 2, since basic oxygen saturation occurs in the output section. A smaller value of this parameter is impractical due to the fact that with a smaller value of this parameter gas-liquid flow does not have time to form by the time of the sign-in section 2, the effectiveness of the dispersion is reduced and there are irregularities in the work of the airlift. It is also advisable to emphasis plate 14 is partially performed at the end of the tee (or swirl chamber) by a value not less than 1, This follows from the design features, as in the place of installation of air at the bottom of the camera THEREFORE has a slotted clamp, in which the fixed stop 14. The telescopic connection of the sections 1 and 2 allows you to adjust the length of the airlift depending on the height of the cameras UBO.

The proposed variants of the device and method of operation of one embodiment are as follows.

When mounting the air pump is located in the chamber UBO in the vertical working position, thus due to the stop plate 14, the lower end of the air lift pump is located at some distance from the bottom of the camera UBO. In the bottom of the camera is THEREFORE given to the Ren latch plate stop 14, that simplifies the installation of the airlift. When the airlift compressed air is supplied into the pipe 12, from whence he comes in to allow the channel 10, the output of which a jet of air is crushed in liquid with the formation of the gas-liquid mixture with a specific gravity lower than the specific gravity of the liquid filling the chamber, THEREFORE, from which the pumped liquid, while the gas-liquid mixture by bubbling air bubbles rises through the input section 1. The sizes of air bubbles as upwelling increased by the hydrostatic pressure is reduced, with a corresponding increase in their volume. With the passage of the disperser 4 bubbles dissolved into smaller bubbles, which come in the output section 2. Due to the fact that section 2 has a larger inner diameter than the internal diameter of the section 1, the flow rate of the gas-liquid mixture at the inlet section 2 drops, while by increasing the number of bubbles increases the area of contact of the gas and liquid phases, which creates favorable conditions for saturation of the latest air, and, in addition, improves the efficiency of the airlift due to more efficient use of air, as in section 2, the bubbles are larger than in section 1, the surface with a corresponding increase their transport capacity. Practice found that the inner diameter) the section should be 0,4-0,6 inner diameter of the output section; at lower or higher values of these ratios of the diameters or the saturation of the liquid air is insufficient, or the influence of the values of drop diameter on the efficiency of the airlift slightly and leads to excessive bulkiness of the airlift. Due to the fact that the length of the input section 1 is not less than 0.3 of the length of the output section 2, reduces the impact on the pumping capacity of the airlift, the increase in the size of the bubbles when they are floating. This is because by performing the input section 1 is shorter than section 2 bubble size appropriate to the disperser 3, has not yet reached a critical size. If the length of the input section will be less than 0.3 length of section 2, then section 2 bubble sizes will be increased, respectively, liquid partitioning (slats) between them will be refined, which reduces the volume transported by bubbles of liquid. The execution section and section 2 curved, with a smaller diameter than the diameter of the main part of the output section 2 provides the increase of the flow velocity in this area and discharge of the pumped gas-liquid mixture fluid, for example, in connecting the camera UBO. Perform lateral tide 11 l-shape with curved inlet pipe in the form of a fitting that is located parallel to the tube input section 1, provides fixed what I'm on the fitting section of the pipeline 8, without inflection.

The second version of the airlift similar to the first option, i.e. when the pumping fluid is saturating it with air. At the same time, this option can be used to siphon overflow liquid, for example, from the chamber Into the chamber G UBO, while short-term include the air supply to the air pump to fill the input branch ∩-shaped siphon and the tribe of the gas-liquid mixture, and after filling the air supply is stopped and further draining occurs in siphon mode. The siphon off automatically in case of decrease of the liquid level in the chamber In due landing of the valve 19 on the saddle (tide 15). The on-off air supply can be incorporated into the programmer, which are equipped with modern UBO. Due to the fact that the output slice ∩-shaped siphon is located below the level of the float valve in the closed position, i.e. the output slice siphon is located below the liquid level in the chamber, is provided by gravity draining the liquid from the chamber Into the chamber G (at higher liquid level in the chamber In comparison with camera G), while the saturation of the pumped liquid oxygen occurs only at the initial stage of pumping. It should be noted that if this embodiment of the airlift is used primarily as a siphon overflow, the presence of the var is of Gutorov impractical.

The next option, perform the swirl chamber 22 similar to the first option, however, due to the fact that the free end of the pipe section 1 is placed in the flow channel the flow of the vortex chamber 22 increases suction capacity of the airlift. This is because at the tangential entry of the air through the tangential nozzle 23 in the volume of the vortex chamber develops a vortex air flow, while the axial region of the vortex with a low pressure closed with one hand, on the vertical screen 26, and on the other on the bottom of the camera UBO. The supply of the vortex chamber coaxially located cylindrical shell 24 that is installed with the formation of the closed bottom of the circular vortex channel, provides for the development of circular vortex air flow, which captures the fluid with the formation of the air / water emulsion, which is supplied to the input section 1. Further work is carried out as described above, the first option.

Application of the proposed airlifts most suitable for cases where the UBO in the process of purification of waste water must be pumped between cameras installation. In these cases, along with pumping, waste water is saturated with oxygen, which reduces the energy consumption for the aeration. In addition, due to more efficient use of air improves the efficiency of Airlie is tov, that reduces the cost of operation. The proposed airlifts of polymer material, which can be used, for example, polyethylene or propylene, or vinyl plastic or other similar materials, simplifies their manufacture to ensure a long trouble-free operation.

1. The air pump, comprising a housing in the form of a water pipe with a curved output section equipped with a nozzle located in the area of its input section and provided with a fitting for connection to a supply line of compressed air, characterized in that a water pipe is made of pipes of different diameters, the ends of which are connected with the formation of at least two, coaxially, the input and output sections, while the input to the output section has disperser, and the free end of the input pipe section secured in the bore channel ┤ -shaped tee, equipped with lateral tide in the form of a fitting for connection to the supply line of compressed air supplied with nozzle channel in communication with the through channel of the tee, with curved outlet pipe is made with a diameter less than a diameter of the output section.

2. The air pump according to claim 1, characterized in that the dispersant is made in the form of a metal grid, is fixed to the output cut pipes of the input section.

3. The air pump according to claim 1, the best of the decomposing those what disperser is made in the form of longitudinal slits in the dead end part of the tube input section and turbulizer in the form of an annular protrusion that is installed in the output section on a hollow pipe end face of the input section.

4. The air pump according to claim 1, characterized in that the socket for the input of compressed air fixed segment of the pipeline, which is fixed by the height of the airlift, with the free end of this pipe is supplied with the adapter.

5. The air pump according to claim 1, characterized in that the diameter of the curved outlet area is 0.3-0.6 diameter of the main part of the output section.

6. The air pump according to claim 1, characterized in that the inner diameter of the input section is 0.4-0.6mm inner diameter of the output section.

7. The air pump according to claim 1, characterized in that at its lower end part of the fixed plate, the focus with the tab at the lower edge of the end face in the length of at least 1 cm

8. The air pump according to claim 1, characterized in that the length of the input section is not less than 0.3 of the length of the output section.

9. The air pump according to claim 1, characterized in that the input and output sections form a telescopic connection.

10. The air pump according to claim 1, characterized in that the pipe sections and the tee is made of a polymeric material.

11. The airlift of claim 10, characterized in that the polymeric material is a polyethylene or propylene, or vinyl plastic or other like the haunted materials.

12. The air pump, comprising a housing in the form of a water pipe with a curved output section equipped with a nozzle located in the area of its input section and provided with a fitting for connection to a supply line of compressed air, characterized in that a water pipe is made of pipes of different diameters, the ends of which are connected with the formation of at least two, coaxially, the input and output sections, while the input to the output section and its height is set dispersers, the free end of the input pipe section secured in the bore channel ⊥-shaped tee, provided with side tides communicated with the through channels, one of which is executed in the form of a fitting for connection to a supply line of compressed air and the other is made in the form of a seat shut-off valve, which is equipped with traction and float and slidably mounted on the input and output sections, with curved outlet pipe is made with a diameter less than a diameter of the output section.

13. Airlift indicated in paragraph 12, characterized in that the dispersant is made in the form of a metal grid, is fixed to the output cut pipes of the input section.

14. Airlift indicated in paragraph 12, characterized in that the dispersant is made in the form of longitudinal slits in the dead end part of the tube input section and turbulizer in the form of an annular protrusion is installed in the output section on a hollow pipe end face of the input section.

15. Airlift indicated in paragraph 12, characterized in that the socket for the input of compressed air fixed segment of the pipeline, which is fixed by the height of the airlift, with the free end of this pipe is supplied with the adapter.

16. Airlift indicated in paragraph 12, characterized in that the diameter of the curved outlet area is 0.3-0.6 diameter of the main part of the output section.

17. Airlift indicated in paragraph 12, characterized in that the inner diameter of the input section is 0.4-0.6mm inner diameter of the output section.

18. Airlift indicated in paragraph 12, characterized in that at its lower end part of the fixed plate, the focus with the tab at the lower edge of the end face in the length of at least 1 cm

19. Airlift indicated in paragraph 12, characterized in that the length of the input section is not less than 0.3 of the length of the output section.

20. Airlift indicated in paragraph 12, characterized in that the traction valve are adjustable.

21. Airlift indicated in paragraph 12, characterized in that the pipe sections and the tee is made of a polymeric material.

22. Airlift according to item 21, characterized in that the polymeric material is a polyethylene or propylene, or vinyl plastic or other similar materials.

23. The air pump, comprising a housing in the form of a water pipe with a curved output section equipped with a nozzle located in the area of its input section and provided with a fitting for connection to the pipeline under the Chi compressed air, characterized in that a water pipe is made of pipes of different diameters, the ends of which are connected with the formation of at least two, coaxially, the input and output sections, while the input to the output section and its height is set dispersers, the free end of the input pipe section fixed in a flow channel of a flow of the vortex chamber, provided with a tangential nozzle for entering compressed air, with curved outlet pipe is made with a diameter less than a diameter of the output section.

24. Airlift according to item 23, wherein the swirl chamber provided with a coaxially located cylindrical rings installed with the formation of the closed bottom of the ring vortex channel, over which is a vortex screen.

25. Airlift according to item 23, wherein the dispersant is made in the form of a metal grid, is fixed to the output cut pipes of the input section.

26. Airlift according to item 23, wherein the dispersant is made in the form of longitudinal slits in the dead end part of the tube input section and turbulizer in the form of an annular protrusion that is installed in the output section on a hollow pipe end face of the input section.

27. Airlift according to item 23, wherein the connecting pipe to enter the compressed air fixed segment of the pipeline, which is fixed by the height of the airlift, with free con the t of this pipeline is supplied by the adapter.

28. Airlift according to item 23, wherein the diameter of the curved outlet area is 0.3-0.6 diameter of the main part of the output section.

29. Airlift according to item 23, wherein the inner diameter of the input section is 0.4-0.6mm inner diameter of the output section.

30. Airlift in item 23, characterized in that at its lower end part of the fixed plate, the focus with the tab at the lower edge of the end face in the length of at least 1 cm

31. Airlift according to item 23, wherein the length of the input section is not less than 0.3 of the length of the output section.

32. Airlift according to item 23, wherein the height of the input and output sections are dispersers.

33. Airlift according to item 23, wherein the input and output sections form a telescopic connection.

34. Airlift in item 23, characterized in that the pipe sections and the tee is made of a polymeric material.

35. Airlift in item 23, characterized in that the polymeric material is a polyethylene or propylene, or vinyl plastic or other similar materials.

36. The method of operation of the airlift, including air flow in the entrance region of water-lifting pipe, characterized in that a water pipe is made in the form-shaped siphon with shut-off valve and impeller located in the input branch -shaped siphon, the air in the airlift carried out before filling the input branch to the knee-shaped siphon the gas-liquid mixture, and the shutdown of air is carried out by planting shut-off valve to the seat, equipped on the input slice-shaped siphon, whereby the output slice-shaped siphon is located below the level of the float valve in the closed position.



 

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2 cl, 2 dwg

FIELD: chemistry, technological processes.

SUBSTANCE: preparation includes filler and oil-destructing microorganisms. As oil-destructing microorganisms it contains association of four strains: Saccharomyces sp. "ККМ ГНЦ ВБ "Вектор" № Y-1036, Bacillus sp. "ККМ ГНЦ ВБ "Вектор" № B-1040, Bacillus sp. "ККМ ГНЦ ВБ "Вектор" № B-1039, Enterobacter sp. "ККМ ГНЦ ВБ "Вектор" № B-1038 in form of mixture of their equal amounts with content of each component not less than 2×1012 microbial bodies, and as filler it contains mixture of equal amounts of saccharose, gelatin and agarose, with the following ratio of components, wt %: contains association of four strains: Saccharomyces sp. "ККМ ГНЦ ВБ "Вектор" № Y-1036, Bacillus sp. "ККМ ГНЦ ВБ "Вектор" № B-1040, Bacillus sp. "ККМ ГНЦ ВБ "Вектор" № B-1039, Enterobacter sp. "ККМ ГНЦ ВБ "Вектор" № B-1038 - 40-60, mixture of saccharose, gelatin and agarose - the remaining part.

EFFECT: invention allows to improve ecological situation in areas of intensive oil extraction and increase productivity of purifying ability of strain association due to communicative effect.

7 tbl, 3 dwg

FIELD: chemistry, technological processes.

SUBSTANCE: device includes case 1, housing 2, drive 3, grid, made in form of rotating hollow-body drum 4 with spacings 3mm, through which sewage water is filtered, discharge pipe 5, rake 6, made with special knives, fitting drum side and removing refuse from it, slope 7, tray 8 and container 9. Inside case 1 in housing 2 conductometer sensor of liquid level is installed, due to which device operates in automatic mode.

EFFECT: simplification of construction and improvement of processed sewage water quality and possibilities of device servicing.

1 dwg

FIELD: chemistry.

SUBSTANCE: sewage water is preliminary aerated until degree of saturation with air is not less than 10.2 mg/l. Sorption and oxidation are carried out in biocoenosis of active silt, as such its swollen form is used, mixing sewage water and active silt supplied in countercurrent manner in ascending-descending flow with not less than two-fold cyclic change of pressure onto swollen silt from 0.1 to 0.01 MPa due to forced supply of water-silt mixture from separate sedimentator. Height of purified water layer is not less than 10 m. In sedimentator swollen silt is retained by means of biological film and gravitational sedimentation and purified water is separated in ascending-descending flow.

EFFECT: invention allows to reduce purification cost and improve water purification quality.

1 tbl, 1 ex

FIELD: chemistry, technological processes.

SUBSTANCE: method includes sorption and oxidation of sewage water in biocoenosis of active silt, in combination with process of sorption and oxidation by means of biological film with degree of oxygen air saturation not less than 18-22 mg/l. Process is carried out after cavitational processing with cavitation number G=0.004 at the stage of preliminary purification successively in three stages, which take place in autonomous reactors, which differ from each other by used biocoenosis of active silt and biological film. Mixing of active silt with purified sewage water is carried out in each reactor not less than twice in ascending-descending flow, formed in reactor by turbulization of supplied to lower part of reactor water-air mixture, processed at each stage by cavitation with number G=0.002 and aeration. Retained sediment is divided into parts, each of which is supplied to one of reactors, where water purification took place, one - for silt regeneration, the remaining - for processing of utilized sediment, where it is processed in alternating manner in turns by cavitation with numbers G=0.001 and 6.5, number of cycles being not less than two. Supply of sewage water into each of reactors, used for regeneration of swollen silt or sediment processing, is stopped for the time required for said processes, during which in circulation process repeated aerational and cavitational processing are carried out, after which silt is compacted by settling process, and supernatant water, which was enriched with ferments in process of sediment processing, is supplied to initial stage of water purification process.

EFFECT: method allows to increase degree of water purification reducing purification cost and increasing safety degree of utilised silt sediment as organic-mineral product.

2 tbl, 1 ex

Anaerobic reactor // 2335464

FIELD: engines and pumps, chemistry.

SUBSTANCE: invention can be used for production of biogas. The anaerobic reactor incorporates liquid and solid substance preliminary acidation section 2, reactor with basic load section 3a and low load section 3b wherein acidated substances are subjected to fermentation and final settling section 4. Partition 17 is arranged between preliminary acidation section 2 and basic load section 3a. Double partition 18 is arranged is arranged behind the basic load section 3a and low load section 3b, while partition 19 is arranged between the low load section 3b and final settling section. Preliminary acidation section 2 accommodates mixers 6, 7, driven by the control device 14 via signaling or feeding wires 15. Control device 14 is connected, via signaling or feeding wire 16, with pump 5c forcing the substances through pipes 5a and 5b from section 2 into the basic load section. Transport facilities 5a, 5b, 5c designed for transfer of the liquid and solid substances from preliminary acidation section 2 into reactor 3a, 3b comprise the means to keep weakly dissolved solid substances till sufficient acidation and to force sufficiently acidated substances further on.

EFFECT: simple and efficient production of biogas from liquid and solid substances.

13 cl, 4 dwg

Aerator // 2334688

FIELD: mechanics.

SUBSTANCE: aerator incorporates annular casing 1 with its inner and outer walls furnished with L-shape annular ledges 2 and lower part annular collars with a number of slots. The aerator is provided also with perforated flexible diaphragm 4 having inner and outer sealing collars at the points in register with the casing inner and outer walls. Every aforesaid collar is furnished with an inner annular L-shape slot in register with L-shape annular ledge 2 of casing 1 and a number of locking flexible tenons, directed inward and provided with end bulges, aligned with and matching the slots in the casing annular collars. The aerator incorporates also air feed branch pipes 17 with clamping bracket 14, rubber taper bushes 15 and retainers 16 for attachment to air feed pipes 18. Rigid tenons are arranged coaxially with and opposite to the aforesaid locking tenons, the former having the height at which Δ = (a + b) - s with Δ ≥ 0.5 mm, where Δ is a value of the rigid tenon height exceeds that of the bulge, a is a locking bulge height, b is a rigid tenon height, s is a distance between annular collars with slots.

EFFECT: higher tightness and reliability of attachment of diaphragm to aerator and of that of aerator to air feed pipes.

5 dwg, 2 cl

FIELD: mechanics.

SUBSTANCE: system of attaching air distributing pipes to aeration tank bottom 2 consists of anchor bolt 3, bearing post 4, fastening polymer clamp 5 and locking element 6. Polymer bearing post 4 is furnished, in its lower part, with taper bush 7 narrowing downward, and, in its upper part, with two pairs of diametrically opposite mutually perpendicular holes 9, 10. Fastening clamp 5 is fitted on air distributing pump 15 with its ends inserted in the upper part of bearing post 4 and locked by element 6. Every end of fastening clamp 5 is provided with beveled outer tenon 11 interacting with the hole of one pair of diametrically opposite holes 9, 10 of bearing post 4 and inner locking guide 12 interacting with locking element 6 passing through the other pair of holes. The size of beveled tenons 11 complies with that of holes 9 interacting with them, while the shape and size of locking element 6 comply with those of holes 10.

EFFECT: higher rigidity, reliable attachment of air distributing pipes to aeration tank bottom.

2 dwg

Aerator // 2334686

FIELD: mechanics.

SUBSTANCE: aerator represents a toroid structure with casing 1 with a central bore. Air feed branch pipes 2 are arranged opposed below casing 1 covered with dispersive elastic enclosure 3. Slots inclined to circle tangent are arranged on aforesaid enclosure 3 in concentric circles. Note that the slot inclination angle, with the distance from the circle center increasing, either increases from 0° to 90° decrease from 90° to 0°. Aerator is mounted on air duct 5.

EFFECT: high-efficiency aeration under various processing conditions.

3 dwg

FIELD: technological processes.

SUBSTANCE: according to invention, at the first stage sewage is fed to silt granules, afterwards these silt granules undergo fluidisation in the presence of oxygen-containing gas, and the third stage (sedimentation stage) involves silt granule sedimentation. At the first stage sewage is fed at a rate preventing layer fluidisation, and at the third stage silt granules form silt granule layer after sedimentation.

EFFECT: possibility of efficient removal of organic nutrient substances, nitrogen compounds and phosphate in relatively restricted reactor space.

4 cl, 2 dwg, 1 tbl, 1 ex

FIELD: technological processes; chemistry.

SUBSTANCE: composition for treatment of soil and water from oil contamination contains wood dust, and also wastes of flour-grinding and cereals industry, with further ratio of components, weight %: wastes of flour-grinding or cereals industry 10.0-20.0, wood dust - the rest. Method of water treatment from oil contamination includes application of sorbing slick bars filled with abovementioned composition for water surface treatment.

EFFECT: more efficient cleaning of different types of soils and basins with different extent of contamination.

2 cl, 2 tbl, 3 ex

FIELD: environment protection.

SUBSTANCE: method involves mechanical removal of excessive contaminants from surface and reducing toxicity of contaminated soil; sowing green manure crops and perennial grasses; preliminarily removing taking soil samples from contaminated surface and separating native contaminant destructors therefrom; after mechanical removal of contaminant from soil surface, providing sequential treatment of plot soil with water-soluble humates and at least double treatment with native contaminant destructors; mellowing soil; applying lime with mineral fertilizers such as saltpeter, double superphosphate and calcium chloride. Green manure crops are sown after application of fertilizers. Method further involves grinding green manure crops, plowing into soil and covering with soil by means of covering roll.

EFFECT: increased efficiency, reliable ecologically clean restoration of soil after contamination thereof.

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