Method of purifying phenol-containing sewage waters of rice husk processing
SUBSTANCE: method of purification of phenol-containing sewage waters of alkali-hydrolysis processing of rice husk includes preliminary desiliconisation of phenol-containing sewage waters by their processing with hydrochloric acid with precipitation of solid and separation from solution of silicon-containing product and electrochemical oxidation in presence of chloride ions in electrolytic cell with application of direct current. Process of electrochemical oxidation is carried out with concentration of chloride ions 0.10-0.11 mol/l in non-diaphragm electrolytic cell with application of ruthenium-titanium oxide anode and titanium cathode for 70-90 min with current density 100-150 mA/cm2 with constant mixing. Required concentration of chloride ions is provided by dilution with water of phenol-containing sewage waters after their desiliconisation.
EFFECT: invention makes it possible to increase degree of purification of polydisperse concentrated phenol-containing sewage waters of alkali-hydrolysis processing of rice husk from phenol and other organic pollutants.
3 cl, 1 tbl, 2 ex
The invention relates to the treatment of industrial waste water from organic compounds that represent an environmental hazard, and can be used to clean finasterida wastewater from the production of cellulosic materials, mainly waste water recycling rice husk by alkaline hydrolysis.
The production of fibrous materials in the pulp and paper industry, in particular to obtain an intermediate for the production of cellulosic materials from rice husks, is characterized by a large flow of water to ensure environmentally safe level of water use is necessary before discharge to water bodies be cleaned in accordance with the regulations.
To clean finasterida wastewater pulp and paper industry uses a variety of methods: physical, chemical, physico-chemical (coagulation, flocculation, adsorption) and biological, at present, all the more widespread electrochemical methods that effectively remove difficultly oxidizable organic compounds.
Known purification method finaasteride wastewater (Pat. CN No. 101362677, publ. 2009.02.11) by electrochemical decomposition of phenol in solution using as a working electrode polyaniline plait�Ki, precipitated on the surface of the anode, with the oxidation-reduction mode is controlled by adjusting the potential of the electrode. Under oxidizing conditions, the membrane expands and draws phenol, or recovery it narrows, releasing phenol, and regenerates. The known method is ineffective at clearing polydisperse wastewater with high values of chemical oxygen demand (COD) and color.
Also known electrochemical method of cleaning finasterida wastewater COD=530 mg O2/l (us Pat. CN No. 101891285, publ. 2010.11.24) using boron-doped diamond film electrode with a developed surface, with which the standard indicator (150 mg/l) phenol is achieved 3,19 h. However, the known method is ineffective at clearing polydisperse wastewater with high concentrations of phenols, COD value and chroma.
The closest to the claimed is a method of cleaning finasterida wastewater by electrochemical oxidation (Pat. CN No. 102515315, publ. 2012.06.27), ensuring the achievement of standard indicators in mild reaction conditions and the absence of secondary pollution of waste waters in which use of titanium anode, previously subjected to grinding, alkaline and acid treatment, electrolysis and calcium�the probing, and a platinum cathode. The content of chloride ions in the waste water was adjusted to a concentration of not less than 0.03 mol/l, then carry out the processing at a constant current density of 500 mA/cm2for 0.5 h at controlled concentrations of chloride ions, the current density and time of electrolysis.
However, the known method is not effective enough at clearing polydisperse wastewater with high concentrations of phenols, COD value and chroma, in particular alkaline hydrolysates formed by obtaining fibrous semi-finished products from rice husk and contains in addition to phenolic compounds complex of polluting organic substances. It provides the necessary degree of purification finasteride solution with an initial concentration of not more than 200 mg of phenol/l, and the indicators of purity relate to model solutions that do not contain other pollutants.
The object of the invention is to provide an effective method of purification of highly concentrated polydisperse finasterida wastewater alkaline hydrolysis of rice husk processing, providing a high degree of purification from phenol and other environmental risk of organic substances.
The technical result of the invention is to improve PT�fines and degree of treatment of polydisperse concentrated finasterida wastewater alkaline hydrolysis of rice husk processing from phenol and other organic contaminants.
Said technical result is ensured by the method of cleaning finasterida wastewater alkaline hydrolysis of rice husk processing by electrochemical oxidation in the presence of chloride ions in the electrolytic cell with the use of direct current, in which, in contrast to the known, the electrochemical oxidation is carried out at the concentration of chloride ions 0,10-0,11 mol/l in bezdiafragmennoi electrolytic cell using an oxide ruthenium-titanium anode and titanium cathode for 70-90 min at a current density of 100-150 mA/cm2with continuous stirring, and conduct pre-obstrelyani finasterida wastewater by treatment with hydrochloric acid to settling or separation from the solid solution of silicon-containing product, with the necessary concentration of the chloride ions by dilution with water finasterida wastewater after their obstrelyany.
In a preferential embodiment of a method of processing finasterida wastewater with hydrochloric acid is carried out until the pH of the solution is 3.5-4.0.
To create optimal conditions for the electrochemical oxidation of wastewater after obstrelyany diluted with water in ratio 1:(10-12).
The method is as follows.
The phenol-containing waste water, �Brazauskas upon receipt of fibrous cellulosic prefabricated from rice husk by processing by the method of alkaline hydrolysis and containing more than 1000 mg/l phenol in, and other organic pollution, including in the form of polydisperse particles of organic origin, was treated with hydrochloric acid to obtain the silicon-containing solid residue. Almost complete obstrelyani is carried out with the pH value of the solution is 3.5-4.0. Obtained by processing silicon-containing sludge separated from wastewater by using one of known methods, and the remaining obescity solution was diluted with water, providing the concentration of the chloride ions of about 4 g/l (0,10-0,11 mol/l), which required a dilution of 10-12 times.
Then carried out the electrochemical oxidation of dilute wastewater in bezdiafragmennoi temperature-controlled electrolytic cell at a current density of 100-150 mA/cm2for 70-90 min with constant stirring. As the anode was used ruthenium oxide-titanium (ORT) electrode and a titanium cathode.
Quality indicators derived from the processing of rice husk by the method of alkaline hydrolysis of wastewater prior to their treatment by the proposed method and after, and technology standards for wastewater treatment in accordance with the recommendations of Helsinki Commission (HELCOM, 1992.04.09) for wastewater pulp production are given in the table. The content of impurities is given in mg/DM3and for �normiruemyh on the recommendations of HELCOM in kilograms per tonne of product (air-dried pulp).
The destruction efficiency of organic substances, which clearly shows the degree of purification was assessed by color, biochemical oxygen demand BOD5, chemical oxygen demand COD and phenolic equivalent. The removal efficiency of organic compounds in COD was 66%, phenolic compounds are oxidized almost completely within 80 min. the decolorization Efficiency after 60 min reaches over 99%.
Peeled proposed method, the effluents before discharge to water in places of drinking and household water use by the existing standards (maximum permissible concentrations of 15 and 30 mg O2/l respectively) and HELCOM standards require advanced treatment to remove organic substances (COD. They can be used as process water in the corresponding production, in particular for cleaning the intermediate products in the processing of rice husk.
Examples of specific implementation method
To determine the color was applied fotoelektrokalorimetry method with spectrophotometer UNICO-1201 GOST 3351-74 "drinking Water. Methods for determination of taste, odour, colour and turbidity". COD was determined by the PND f (environmental�this regulatory document Federal) No. 14.1:2:4.190-03 dated 27.02.2003 "Quantitative chemical analysis of water. The method of determining bichromate oxidability (chemical oxygen demand) in samples of natural, drinking and waste water by the photometric method with application fluid analyzer "Fluorat-02"". The content of phenolic compounds was determined photometrically using the Folin reaction (Standard Methods for the Examination of Water and Wastewater/American Water Works Association, and Water Pollution Control Federation. 20th Edition. Washington, DC, 1998. Vol. 5550. P. 988-992). The optical density of the solution was measured on a UV spectrophotometer Shimadzu UV-1800. The chloride concentration in the solution was determined by potentiometric titration with silver chloride electrode according to GOST 18190-72. "Drinking water. Methods for determination of residual active chlorine" (valid).
Waste water alkaline hydrolysis of rice husk after separation of the cellulosic semi-finished product, subsequent processing of the resulting solution with hydrochloric acid (d=1,175 g/cm3) to pH 4.0 with settling or filtering out of silicon-containing product was diluted with water 1:10. The diluted solution with a content of chloride ions of 0.11 mol/l (4 g/l) were subjected to electrochemical oxidation in bezdiafragmennoi temperature-controlled electrolytic cell with continuous stirring at a constant current density of 100 mA/cm2within 90 min using as the anode oxide ruthenium-year - �anew electrode, consisting of 30% of RuO2and 70% of TiO2as a cathode electrode made of titanium grade VT1-0.
The results of processing are shown in the table. The decolorization efficiency of 99.93%.
Waste water recycling rice husk alkaline hydrolysis was treated according to example 1 under the following conditions: treatment with hydrochloric acid to pH 3.5, diluted with water obschetvennogo solution of 1:12 to the content in the diluted solution of the chloride ions of 0.10 mol/l, electrochemical oxidation at a current density of 150 mA/cm2for 70 min.
The similar results obtained in example 1.
1. Method of cleaning finasterida wastewater alkaline hydrolysis of rice husk processing by electrochemical oxidation in the presence of chloride ions in the electrolytic cell with the use of direct current, characterized in that the electrochemical oxidation is carried out at the concentration of chloride ions 0,10-0,11 mol/l in bezdiafragmennoi electrolytic cell using an oxide ruthenium-titanium anode and titanium cathode for 70-90 min at a current density of 100-150 mA/cm2with continuous stirring, and conduct pre-obstrelyani finasterida wastewater by treatment with hydrochloric acid and precipitation of solid separation from the solution kremnistaya�his product the necessary concentration of the chloride ions by dilution with water finasterida wastewater after their obstrelyany.
2. A method according to claim 1, characterized in that the processing finasterida wastewater with hydrochloric acid is carried out until the pH of the solution is 3.5-4.0.
3. A method according to claim 1, characterized in that the waste water after obstrelyany diluted with water in ratio 1:(10-12).
FIELD: oil and gas industry.
SUBSTANCE: invention can be used in gas and oil production industry for associated crude iodine production from iodine-lean confined groundwater. The method is implemented by a sequence of electrochemical iodide ion oxidation, molecular iodine sorption on carbon, electrochemical reduction of iodine to iodides, and desorption. All stages are performed in the same chemical reactor represented by a sorption column. Activated carbon with minimum iodine adsorption capacity of 1,000 mg/g is used as a sorbent. Graphite electrode at the column bottom is used as an anode, copper cathode in the form of plate at the column top is used as cathode. After the carbon is saturated with iodine, electrode polarity is reversed to desorb iodine from carbon in the form of iodide ions. Confined groundwater, including one with low iodine content, is used as iodine source.
EFFECT: enhanced iodine production efficiency.
2 cl, 1 dwg, 1 tbl, 1 ex
SUBSTANCE: basic operations of the method are adding a coagulant to the starting water to be purified, floatation, forming a water-gas mixture, treating with high-voltage pulsed discharges, full oxidation of phenols and oil products. The last operation is final purification on sand-carbon filters. The water is treated using quasi-volume discharges with frequency of 400-1000 pulses per second, carried out periodically in bursts with the ratio of the duration of the pulse burst to the repetition period of the bursts of 0.1-0.5.
EFFECT: high efficiency of the method and low power consumption.
3 dwg, 2 tbl, 1 ex
SUBSTANCE: invention relates to versions of a method of breaking down a colloidal system by electrochemical decomposition of emulsions and to apparatus for carrying out said method. One version of the method includes: separating solid contaminants from the emulsion; preheating the emulsion in a heat regenerator; achieving minimum emulsion stability by regulating pH; decomposing the emulsion in an electrochemical decomposition reactor by passing the emulsion between an anode made of electrochemically active material and a cathode made of electrochemically inactive material, as a result which colloidal particles of the emulsion are attached to flakes which form foam, when using as the flocculant a compound obtained in situ from the material of the electrochemically active anode; discharging the foam obtained from the step described above and discharging the purified water through a filter for final purification and/or into a reservoir for final settling and into a heat regenerator.
EFFECT: use of the present invention reduces power consumption when purifying water.
21 cl, 2 ex, 2 dwg
SUBSTANCE: invention relates to field of still waste liquid recycling, which is formed in production of coda ash by ammonia method. Still waste liquid is processed with sodium hydroxide with mole ratio CaCl2:NaOH, equal 1:2÷2,25 (mainly 1:2), calcium hydroxide precipitation, which is obtained in the process, is filtered, filtrate, consisting of sodium chloride, is subjected to electrochemical processing in two-chamber electrolyser with cathion-exchanging membrane at current density 350÷1400 A/m2 with obtaining hydroxide of sodium and chlorine.
EFFECT: invention makes it possible to simplify method of still waste liquid recycling, reduce energy consumption on recycling and obtaining calcium hydroxide, hydroxide of sodium and chlorine as marketable products.
1 dwg, 2 tbl, 2 ex
FIELD: process engineering.
SUBSTANCE: invention relates to treatment of industrial effluents. Oil products are separated in separators 3, 4 and afterpurified in ultra filtration unit 10. Clarified alkaline effluents are directed into electrolytic cells 13. alkali is concentrated in electrolytic cell cathode chamber 14 while sulphides are reduced to elementary sulfur in anode chamber 15. Concentrated alkali and sulfur are discharged into service bins 17, 20, respectively. Downstream of electrolytic cells 13, effluents are treated in reverse-osmosis unit 22. Purified water is collected in tanks 23. Concentrate is fed back into tank 21 for clarification.
EFFECT: alkali recover, water purification and elementary sulfur without use of extra reagents.
2 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to environmental protection and may be used for treatment of effluents and wastes. Proposed device comprises dehydration scraper conveyor, crosswise partitions, process water cleaning devices of two types, water electrical cleaning devices and device to adjust water bleed and discharge depth. Water cleaning devices are arranged in inclined trench that water flow at 0.35±0.10 m/s-rate. Said scraper conveyor is arranged at trench bottom to discharge dewatered slurry into filtration hopper. Water cleaning device are arranged in pairs, that is, louvers-type cleaner - electrical cleaner, and lengthwise finely-dispersed precipitation module - water electrical treatment module, total number of pairs making 6-12. Note here that electrical treatment modules voltage between electrodes varies with distance there between to make 2.5±0.5 V/cm and adjacent pair electrodes polarity being opposite. Positive potential of 10-12 V is fed to crosswise electrically conducting filter while negative potential is fed to scraper conveyor casing.
EFFECT: reduced costs and higher reliability.
SUBSTANCE: method involves steps for homogenising the filtrate, alkaline treatment of the filtrate with lime with subsequent reagent normalisation of pH of the filtrate using aqueous spent etching solutions from metal-processing factories which contain FeCl2 or FeSO4 with concentration of 17-25 wt %, with specific consumption of 1.0-5.0 mg/l of filtrate, bubbling the filtrate, blowing ammonia and biogenous compounds and electroflotocoagulation of the filtrate, after which the cleaned filtrate is taken to an evaporation pond.
EFFECT: higher environmental safety with high degree of purification of complex multi-component effluents, reduced treatment costs.
3 tbl, 2 ex
FIELD: treatment facilities.
SUBSTANCE: invention relates to water treatment and decontamination. The water treatment plant provides for affecting treated water volume by electric field. The plant consists of a reactor, three ejector pumps, stirrer and additional tank. There is a group of top electrodes and limiting screen installed inside reactor. The first ejector pump is connected to the reactor and provided with an outlet nozzle and two inlet nozzles. One of the inlet nozzles acts as an outlet nozzle of reactor, while the second one is intended for treated liquid supply. The second ejector pump is placed between the first ejector pump and stirrer and provided with an outlet nozzle acting as an inlet nozzle of the stirrer, and two inlet nozzles. One of said inlet nozzles is an outlet nozzle of the first ejector pump, while the other one is designed to supply hydrogen peroxide. The third ejector pump is placed in the additional circuit including additional tank for the treated liquid treatment and a pump to enable treated liquid circulating in the additional circuit. The third ejector pump is provided with an outlet nozzle to supply air into additional tank, and two inlet nozzles. One of said inlet nozzles is an outlet nozzle of the treated liquid circulation pump, while the other one is designed to supply air hydrogen peroxide.
EFFECT: invention allows for increasing water cleaning effectiveness and plant output.
FIELD: chemistry, water purification.
SUBSTANCE: invention refers to water treatment and can be used for tap water purification and activation in food industry, medicine, for sea water conversion, etc. Water treatment method is implemented in closed operating capacity and includes heat rejection enabling water local bulk crystallisation by ice crystals silvering in amount 50÷70 % of initial water weight surrounding heat exchanger, contaminated water drain through the port in capacity bottom and through the channel 0.5÷2 cm above capacity bottom, and removal of frost accumulation. Level of operating capacity filling with initial water is determined by height of channel port draining surplus initial water resulted from operating capacity filling and during initial water crystallisation due to its volume increase to additional capacity. Frost accumulation is removed by heating the ten shaped by multistage coil pipe and mounted in working capacity to surround heat exchanger directly in ice zone. During removal of frost accumulation, melt water is exposed to electrochemical activation carried out in special electrochemical activation tank separated with diaphragm to anode and cathode chambers. Herewith cathode chamber is pipeline connected to working capacity.
EFFECT: water purification from dissolved cancerogens, mutagens and gases, heavy hydrogen isotope, deuterium and tritium.
2 cl, 1 dwg, 1 ex
SUBSTANCE: proposed method of purifying oily water effluents involves treatment of water in convection streams, formed by hydrogen bubbles, the number of which is equal to the number of cathode elements, subsequent mixing of the treated effluent water with a stream of clean water, saturated with oxygen bubbles, and filtration of the obtained mixture in a granular bed with catalytic properties. Part of the purified water is returned by recirculation for saturation with oxygen bubbles, and gaseous hydrogen and oxygen are taken out separately. The device for electrochemical purification of oily effluents comprises a case with vertical partition walls and connection pipes for inlet of the water to be purified and outlet of purified water, a receiving chamber, floatation chamber with horizontal electrodes, a chamber for collecting pure water, chamber for collecting sludge and a foam-collecting device in form of a series of truncated pyramids. The device also has a catalytic chamber filled with catalyst, connection pipes for letting purified water into the anode chamber, as well as connection pipes for outlet of gaseous hydrogen and oxygen. The floatation chamber is divided by a horizontal membrane into a cathode and anode chamber. The anode is a solid plate and lies at the bottom of the anode chamber. The gauze cathode is made from separate elements which are parallel to the anode.
EFFECT: increased efficiency and safer water purification process.
8 cl, 1 dwg, 1 tbl
SUBSTANCE: device comprises a flotation device, a frame, a hydraulic drive. On the frame the longitudinal rods are pivotally mounted, and on their cantilever portion the linkage for attachment of the drum is mounted with the ability of movement in a vertical plane. The drum is mounted with the ability of replacement of the drum holder, at that the drum is rotated by the hydraulic motor through the belt drive in the direction opposite of the flotation device movement.
EFFECT: improvement of quality of the implementation of the technological process of cleaning the water reservoirs from blue-green algae and reduction of energy intensity.
SUBSTANCE: invention can be used for biological purification of household and close to them in composition industrial sewage waters from organic compounds and nitrogen of ammonium salts. Initial sewage water is processed in alternating zones with reduced oxygen regime and aerobic regime with further settling biologically purified water and recirculation of active silt. First, sewage water is processed in two zones with reduced oxygen regime, where growth of attached microorganisms is performed on planar inert material with specific area of its surface in first zone 17 m2/m3 and in second- 21 m2/m3 and hydraulic load in first zone not higher than 1.38 m3/m2 of carrier and in second - 0.43 m3/m2 of carrier. After that, processing is carried out in two aerobic zones with specific surface of inert charge material 24 m3/m2 and hydraulic load 0.32 m3/m2 of carrier in each. Recirculated mixture of sewage water and active silt from last aerobic zone is supplied to beginning of first zone in amount 120-150% of volume of supplied sewage water. Concentration of oxygen in zones with reduced oxygen regime is supported in amount 0.5 mg/l, and in aerobic zones - 4-5 mg/l. Settling of purified water is realised for 1-1.5 hours.
EFFECT: method provides increased stability of purification processes, reduction of energy consumption for air supply, twofold reduction of volume of secondary settling tanks.
1 ex, 1 tbl, 4 cl
SUBSTANCE: invention relates to the field of hydraulic engineering, namely the preparation of wastewaters in irrigated agriculture for irrigation and fertilising of plants. The biological stabilisation storage pond comprises a closed water intake water reservoir area in the form of a storage pond 1, having a water-supply tube 2 with the fed collector 21, and a water distribution device at the inlet of the discharge pipeline 4. The water distribution device has two concentrically arranged rings, the inner 5 of which is connected to the pipeline of the outlet, and the outer 6 - to the pipeline of inlet and is located in the lower point of the inclined bottom. The inlet opening of the ring 5 is provided with an air pipe 9 with a valve 10, one end of which is mounted at the inlet to the discharge pipeline 4, and the other communicates with the atmosphere. The source of pressurised air and gas emitted from the wastewaters is made in the form of a mixing chamber 11 with the mesh cloth 12 at the upper part, sequentially arranged on the discharge pipeline 4 below its input. The chamber 11 is connected by the tube 13 with the perforated tubes 14 located in the cavity of the inner ring 5. In the side walls of the inner rings 5 there are air-gas slotted openings 16. In order to regulate the conditions of discharge of the wastewaters into the pond and their removal from the side of the grid 8 at filling the pond 1 a shield 19 can be mounted with an inclination towards the bottom of the pond. The shield 19 can be mounted on a horizontal axis of rotation 20 and is connected by the rods with the drive of vertical movement. According to the second embodiment the storage pond comprises successive water reservoirs with inclined bottoms and water distribution devices. The water distribution devices are formed as two concentrically arranged rings, the inner of which is connected with the discharge pipeline and the outer - with the pipeline of feeding of flows, located in the lower point of the inclined bottom. The inner ring is provided with an air pipe with a vent, one end of which is mounted at the inlet to the discharge pipeline, and the other communicates with the atmosphere. In the side walls of the inner ring there are air-gas outlet openings. The water distribution devices are connected on the discharge pipeline with the mixing chambers.
EFFECT: device improves the efficiency of protection of intake of wastewaters from entering floating debris and simultaneous contributes to decontamination when feeding wastewaters for irrigation The design of the device enables to mix the air due to the organisation of the process of air-gas connection and discharging it from the chamber, which is in the gaseous state.
4 cl, 3 dwg
SUBSTANCE: method includes anaerobic fermentation of organic substances in a methane tank with electrical activation of the medium with dc voltage of 0.2-36 V while stirring and bubbling the mass with the released biogas. The organic substances are fed into the methane tank with moisture content of 40-95%. Monitoring is carried out by measuring the value of current in the electrical circuit, calculating conductivity of the system, measuring the volume flow rate of the formed biogas and determining the current content of carbon dioxide gas in the biogas in the upper part of the methane tank. Electrical activation of methanogenesis is controlled by controlling current by setting a new value of current at the level of the sum of the present and calculated maximum current.
EFFECT: high content of methane in biogas, intensification of the process of producing biogas, high process stability and obtaining an end product with accurately defined parameters.
4 dwg, 1 ex
SUBSTANCE: group of inventions can be used in membrane electrolytic production of chlorine and sodium hydroxide for removing silicon from aqueous compositions containing sodium chloride. The method includes adding, to an aqueous composition of sodium chloride containing silicon, an aluminium-containing compound to obtain molar content of aluminium higher than molar content of silicon in said aqueous composition; Monitoring and maintaining pH of the composition at a first level higher than or equal to 8 and lower than or equal to 10 to obtain a first precipitate; Monitoring and maintaining pH of the obtained aqueous composition at a second level higher than or equal to 4 and lower than or equal to 7 to obtain a second precipitate; separating the formed precipitate from the aqueous suspension to obtain a purified aqueous composition. According to the second version of the method, the precipitate is separated at each formation step thereof. A method of producing chlorine and sodium hydroxide includes electrolysis of aqueous sodium chloride solution purified from silicon using the disclosed methods using a membrane cell.
EFFECT: invention reduces content of silicon in the purified solution which contains sodium chloride, with aluminium content in the purified solution lower than 1 mg/l.
14 cl, 4 ex
FIELD: oil and gas industry.
SUBSTANCE: invention can be used during HCs production from natural or associated petroleum gas. Method of oxygenates cleaning from reaction water generated at stage of HCs synthesis from syngas during GTL process includes conversion of even part of the contained oxygenates under conditions of syngas chilling by even part of the reaction water at temperature over 500°C upon contact with catalyst of the oxygenates steam conversion. Further syngas cooling temperature below 400°C is performed by the cleaned water injection in the syngas flow. Method of use of the reaction water generated at stage of HCs synthesis from syngas during GTL process includes its cleaning of the oxygenates under conditions of the syngas chilling at temperature over 500°C upon contact with catalyst of the oxygenates steam conversion, cleaned water degassing. The cleaned degassed water is used to cool the syngas to temperature below 400°C and produce the water steam.
EFFECT: invention ensures effective cleaning of the reaction water of the oxygenates, and use of the produced cleaned water as feed water for boilers and water steam production.
FIELD: process engineering.
SUBSTANCE: invention relates to filter to be incorporated with waster filtering assembly. Water filtering assembly comprises filter of, mainly, a flat profile. Water filtering assembly comprises container for filtered water, intake funnel to be fitted in said container and to intake unfiltered water. This filter can be fitted in intake funnel for filtering of water fed therein. The filter makes the exit from intake funnel for filtered water to get into aforesaid container. The filter makes the intake funnel bottom and as a result water filtering goes over the entire intake funnel bottom. The filter comprises case with water intake and filtered water outlet. Note here that filtering medium is arranged between said intake and said outlet. Water filtering medium includes the ply of ion-exchange resin and ply of material filled with activated carbon. Note that said plies are separated in said case.
EFFECT: higher filtering rate.
22 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: desalination multistage adiabatic plant additionally comprises a thermosoftener (52) which serves for the generation of sludge particles in the feed water heated in a steam heater (26) and taken from a pipeline to supply the feed water to the inlet of a multi-stage adiabatic evaporator (4), as well as a two-section feed water receiver (76) to reduce supersaturation in the sea water being evaporated due to the usage of sludge particles as "seed crystals" in the supersaturated solution volume. The thermosoftener (52) comprises a perforated membrane (56) built-in in the casing (53) under the cover, a dome-shaped horizontal partition (61) installed with a gap in respect to the inner casing wall, vertical cylindrical shells, a manifold to withdraw the vapour (62) under the dome-shaped partition, a branch pipe for water withdrawal is united with the sludge particle removal and is mounted in the casing bottom, and the branch pipe for steam supply is built-in in the casing cover.
EFFECT: lower rate of scale formation on working surfaces of the plant elements.
2 cl, 9 dwg
SUBSTANCE: invention relates to a device and a method of detecting the quality of a liquid, which are used in water treatment devices. The detector "renders" the quality of water in the form of visible radiation instead of converting intensity of UV radiation into digital form and comprises a first detection window coated with a first material for converting first received UV radiation emitted by a UV source and transmitted through the liquid into first visible radiation. The device additionally mixes the first visible radiation with second visible radiation to produce third visible radiation. A different colour of the third visible radiation reflects different quality of water.
EFFECT: invention simplifies the device and method owing to absence of UV sensors in water, which detect UV intensity.
14 cl, 6 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to combined magnetic processing of fluids. Proposed device comprises housing 1 connected via fluid feed and discharge pipes and magnetic unit 6 fitted therein and composed of the set of permanent magnets. Fluid flow channel is arranged between said magnetic unit 6 and housing 1 and composed of spiral with pitch ratio equal to six. The length of magnetic unit 6 is comparable with its diameter. Ferromagnetic washers 7 are fitted between three circular magnets of magnetic unit 6. Electromagnets 4 built around Helmholtz coils 5 with reactive power compensators are arranged at fluid feed and discharge pipes 2 and 3.
EFFECT: efficient magnetisation of fluid flow, ruled out permanent magnet effects.
FIELD: devices for purification of household and industrial sewage.
SUBSTANCE: the invention is dealt with devices for purification of household and industrial sewage and intended for electrical and cavitational treatment of sewage containing a large quantity of organic compounds. The device for purification of sewage consists of a body made out of a dielectric material partitioned by diaphragms for two electrode chambers and one working chamber, that contains a filtering material. The electrode chambers have cavitational field sources installed and the working chamber is supplied with a the bubbler installed in it. The technical result consists in an increase of recuperation of the filtering material at the expense of application of a cavitational field to it, decrease of the microbiological semination, and an increase of cavitational effect on particles.
EFFECT: the invention ensures an increase of the filtering material recuperation, decreased microbiological semination and increased the cavitational effect on particles.