Biofilter filling

FIELD: waste water treatment.

SUBSTANCE: filling for biofilters used for treatment of waste waters, in particular those from petroleum processing and petrochemical enterprises, contains nonwoven polypropylene material with porosity 80-230 μm, thickness of canvas 0.30-0.55 mm, which is used in amounts 0.45 to 1.43 g/L.

EFFECT: increased strength and created favorable conditions for immobilization of microorganisms and aquatic organisms.

1 tbl, 12 ex

 

The invention can be used in wastewater treatment processes, in particular in the oil refining and petrochemical industries.

Known load for biofilter (Japan's bid No. 60-14637, C 02 F 3/08, 1985), which is a strip, ribbon or cords made of plastic is lighter than water, the upper and lower ends of which are secured to the tabs.

The drawbacks of such elements download for biofilters are a low degree of purification of waste water from oil and the low strength of the elements download.

Famous download for biofilters (France application No. 2565579, 02 F 3/00, 1985), which is a glass fiber, United in the cylindrical brush.

The disadvantages of this boot for biofilters are a low degree of purification of waste water from oil and the low strength of the elements download.

Famous download for biofilters (USSR author's certificate No. 1560486, C 02 F 3/04, 1990) of corrugated plastic sheets and strips between them in the form of strips or strings.

The disadvantages of this boot for biofilters are a low degree of purification of waste water from oil and the low strength of the elements download.

Famous download for biofilters (RF patent No. 2091332, C 02 F 3/04, 1997) from the frame coated by pneumonectomy polymeric fibrous porous material with the TEW (35-40) - (90-95)% and a thickness of fibers (5-10)-(400-500 microns).

The disadvantages of this boot for biofilters are a low degree of purification of waste water from oil and low strength polymer fiber material.

Famous download for biofilters (RF patent No. 2061661, C 02 F 3/04, 1997),in which the leaf frame is made from polymer material with porosity (200-300) - (500-1000) μm and a thickness of 3-20 mm by pneumonectomy.

The disadvantages of this boot for biofilters are a low degree of purification of waste water from oil and low strength polymer fiber material.

Closest to the technical essence and the achieved effect is download for biofilters (Istomin, L.P., Naumenko IV, Transportable VG Application of planar nozzle for enhanced biological treatment of wastewater. Chemistry and technology of water, 1990, 12, No.3, pp.272-275), a synthetic non-woven material, which consists of 50% viscose fiber and 50% of Nitron, called “flailed”.

The disadvantages of this boot for biofilters are a low degree of purification of waste water from oil and low strength flashline.

The offered load for the biofilter contains a non-woven material - geosynthetic with porosity 80-230 μm and the thickness of the blade of 0.3-0.55 mm in the amount of 0.45 was 1.43 g/l

Geosynthetic of otaplivaet from 100%polypropylene, having a density of 0.91 g/cm3and a melting point of 165° With, by thermal bonding of continuous fibers with a diameter of 60-300 μm calendering. The resulting material has a silver color, high rigidity and permeability. He has good resistance to the construction of roads to improve the bearing capacity of the soil Foundation, to separate the layers of the road pavement, drainage structures, construction of roofs, etc.

The proposed application for a new purpose provides a high degree of purification of wastewater containing oil, and the higher strength of biofilters in comparison with materials used at the present time.

In addition, the proposed material can be used volumetric modules download any design that creates the most favorable conditions for immobilization of microorganisms and aquatic organisms.

The examples below wastewater from petroleum products demonstrate the effectiveness of geosynthetics for a new purpose.

The experiments were carried out in laboratory conditions using a bioreactor with a capacity of 16 l with fixed therein three nozzles on the metal square frames with a width of 20 cm and a settling tank. Purification of the wastewater in the bioreactor was performed in conditions in which ensinou aeration with blower speed 20 m 3/m2·including cleaning Time is 6 hours. Then, the treated water is fed into the sump, which was separated from excess sludge.

For analytical control of water used generally accepted methods (Lurie UU Analytical chemistry of industrial wastewater. - M.: Chemistry, 1984).

For conducting experiments used Tuapse refinery wastewater containing petroleum products 7,63 mg/l and 29.4 mg/l and a pH of 7.8 to 7.9. The temperature of the cleaning 27-29° C. as biocenosis used activated sludge, which contained such microorganisms as Arthrobacter, such as Arthrobacter siderocapsulatus, Arthrobacter tumescens, iron bacteria, for example, of the genus Leptothrix and others.

After the experience of the nozzle were released from the sludge, and dried. All nozzles before and after the experience determined the tensile strength according to European standard EP ISO 10319.

Example 1

In the bioreactor with a capacity of 16 l put the nozzle of geosynthetics, with the strength of 7.6 kN/m2with the porosity of 135 μm and a thickness of 0.42 mm, which amounted to 0.94 g/L.

The nozzle increased the biocenosis of the activated sludge to a biomass concentration of 0.1 mg/L. Then filed the waste water with a pH 7,86 containing 7,63 mg/l oil and air at a speed of 20 m3/m2·including the cleaning Temperature was 28° C.

After 6 hours, the treated water is transferred to a settling tank, where the water for 3 hours which was stivals from excess sludge and then were selected for analysis.

The nozzle was removed from the reactor, was purified from accrued biomass was dried and tested for strength.

The test results presented in the table.

Example # 2

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used geosynthetic with the strength of 3.0 kN/m2, porosity 230 μm and a thickness of 0.35 mm Number of nozzles in the bioreactor was 0.51 g/L. the cleaning Temperature was 27° and the pH of the wastewater was 7.8.

The test results presented in the table.

Example # 3

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used geosynthetic with the strength of 12.1 kN/m2, a porosity of 80 μm and a thickness of 0.55 mm Number of nozzles in the bioreactor was 1,43 g/L. the cleaning Temperature was 28° and the pH of the wastewater was 7.9.

The test results presented in the table.

Example No. 4

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used geosynthetic with the strength of 3.2 kN/m2, porosity 230 μm and a thickness of 0.30 mm Number of nozzles in the bioreactor was 0.45 g/L. the cleaning Temperature was 27° C, the pH of the wastewater was 7.8, and the amount of oil in the waste water of 29.4 mg/L.

The test results presented in the table is n.

Sample No. 5 (comparative)

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used geosynthetic with the strength of 15.3 kN/m2, a porosity of 70 μm and a thickness of 0.59 mm Number of nozzles in the bioreactor was 0.61 g/L. the cleaning Temperature was 27° and the pH of the wastewater was 7.8.

The test results presented in the table.

Example No. 6 (comparative)

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used geosynthetic with the strength of 2.6 kN/m2, porosity 230 μm and a thickness of 0.25 mm Number of nozzles in the bioreactor was 0.45 g/L. the cleaning Temperature was 27° and the pH of the wastewater was 7.8.

The test results presented in the table.

Example No. 7 (comparative)

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used geosynthetic with the strength of 15.3 kN/m2, a porosity of 70 μm and a thickness of 0.59 mm Number of nozzles in the bioreactor was 0.61 g/L. the cleaning Temperature was 27° C, pH wastewater amounted to 7.8, and the amount of oil in waste water amounted to 29.4 mg/L.

The test results presented in the table.

Example No. 8 (comparative)

Treatment of waste water was carried out according to example No. 1 with the difference, Thu is as nozzles used geosynthetic with the strength of 2.6 kN/m 2, porosity 230 μm and a thickness of 0.25 mm Number of nozzles in the bioreactor was 0.45 g/L. the cleaning Temperature was 27° C, pH wastewater amounted to 7.8, and the amount of oil in waste water amounted to 29.4 mg/L.

The test results presented in the table.

Example No. 9 (comparative)

Treatment of waste water was carried out according to example No. 1 with the difference that the number of nozzles was 0.40 g/HP

The test results presented in the table.

Example No. 10 (comparative)

Treatment of waste water was carried out according to example No. 1 with the difference that the number of nozzles amounted to 1.55 g/l

The test results presented in the table.

Example No. 11 (prototype)

Treatment of waste water was carried out according to example No. 1 with the difference that as the nozzle used flailed with the strength of 0.8 kN/m2, porosity 420 μm and a thickness of 0.03 mm Number of nozzles in the bioreactor was 0.25 g/L.

The test results presented in the table.

Example No. 12 (prototype)

Treatment of waste water was carried out according to example No. 11 with the difference that the oil content in waste water amounted to 29.4 mg/L.

The test results presented in the table.

As can be seen from the presented materials, the offered load for biofilters using non-woven material of polypropylene is - geosynthetics - has high strength and can increase the degree of purification of waste water from petroleum products.

However, achieving high performance cleaning is possible only when using geosynthetics with the stated porosity, thickness and quantity in the bioreactor (No. 1-4).

So, when using geosynthetics with low porosity and high wall thickness (for example, # 5, and 7) the degree of purification is sharply reduced, which can be explained by the decrease in the rate of flow through the nozzle.

By reducing the wall thickness below the stated (for example, No. 6, and 8) the degree of purification is reduced slightly, and the strength of the nozzle falls.

The material for the filter - geosynthetic with higher porosity is not available.

With a small number of nozzles in the bioreactor (PR) the degree of purification of waste water drops, and in a large (PR) cleaning remains the same, but the flow rate drops.

Comparison of proposed biofilter with a biofilter, which use flailin (on prototype, Proverbs 11 and 12)show the high efficiency of the biofilter using geosynthetics.

48.10 per
Table

The results of experiments on the treatment of waste water from petroleum products using the proposed biofilter
Example No. Description attachmentsThe results of the tests
namethe number of nozzles, g/lporosity, mcmThickness mmthe content of oil products, mg/lthe degree of purification, %Strength, kN/m2
at the entrance to the reactorat the outlet from sedimentation tankto experienceafter the experience
1geosynthetic0,941350,437,630,3895,027,66,9
2the same0,512300,357,630,2696,543,02,2
3“-“1,43800,557,630,2596,7612,1the 11.6
4“-“0,452300,3029,4to 6.4378,123,22,3
5 cf.“-“0,61700,597,633,9615,314,7
6 cf.“-“0,452300,257,630,4194,632,61,2
7 cf.“-“0,61700,5929,423,6419,6015,314,8
8 cf.“-“0,452300,2529,46,9976,242,60,9
9 cf.“-“0,401350,437,634,0147,447,66,9
10 cf.“-“1,551350,437,630,4094,757.66,5
11 Aveflailin 4200,037,632,468,500,8Nozzle torn
12 Ave“-“ 4200,0329,419,8632.50 to0,8the same

Download for biofi trow, containing polymeric material, characterized in that the polymer material used non-woven material of polypropylene geosynthetic with porosity 80-230 μm and the thickness of a cloth of 0.30-0.55 mm in the amount of 0.45 was 1.43 g/l



 

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Biofilter filling // 2256623

FIELD: waste water treatment.

SUBSTANCE: filling for biofilters used for treatment of waste waters, in particular those from petroleum processing and petrochemical enterprises, contains nonwoven polypropylene material with porosity 80-230 μm, thickness of canvas 0.30-0.55 mm, which is used in amounts 0.45 to 1.43 g/L.

EFFECT: increased strength and created favorable conditions for immobilization of microorganisms and aquatic organisms.

1 tbl, 12 ex

FIELD: cleaning of industrial and household sewage.

SUBSTANCE: invention relates to design of head for immobilizing microorganisms at biological cleaning of sewage and method of its manufacture. Proposed head is made polymeric material in form of tubular element with gauze structurized side surface and through holes for circulation of sewage water made of continuous rope of polymeric material of round or shaped section in form of several layers of coaxial screw spirals with opposite direction of winding. Screw spirals are interconnected in series in places of intersection to form through holes for circulation of sewage water in all directions of system of coordinates. Method of manufacture of head includes forming continuous rope of plasticized polymeric material by extruding and winding it onto mandrel rotating and reciprocating in horizontal plane. Screw spirals, thus formed, are series-connected in places of intersection by thermal gluing with forming of through holes.

EFFECT: improved design of head and method of its manufacture.

4 cl, 10 dwg

FIELD: sewage purification equipment for separate cottages.

SUBSTANCE: the invention is pertaining to the devices for deep purification of household sewage of separately located detached buildings of cottages type, recreation centers, hospitals, sanatoria, and may be used for preparation of sewage for a reuse for needs of showering of plants, sinks and other needs of separately located housings. The sewage purification installation of cottages contains: a septic tank, a bioreactor with cenoses of the adnate and freely-floating microorganisms, having two rotating drums with chutes of the sludge mix interchute cross-flow, thin-layer sludge separators and underpans, and also buckets fixed on wheels of the rotating drums, a device of after-purification made in the form of a filtering tower with a grainy catalytic agent of the first kind, a tank for purified water, a decontamination device in the form of two filter towers filled with catalytic agents of the second and the third kind, containing air ducts for the second, a waste discharge pipeline and an electrified shutter controlled by a command electrical device. Chambers of the septic tank and the first stage of the bioreactor are made with a capability to average consumption of water. The technical result is a decrease of the installation power consumption, simplification of exploitation, full automation and improved quality of the purified sewage liquid.

EFFECT: the invention ensures decreased power input of the installation, simplification of its operation, full automation of the purification process and improved quality of the purified sewage liquid.

2 cl, 1 dwg

FIELD: chemical or physical processes.

SUBSTANCE: catalytic nozzle comprises central cord of the core of the fiber members made of polymeric fiber, e.g. capron, whose diameter exceeds the diameter of individual fiber members by a factor of two. Several fiber members of the nozzle are modified by catalyzers. The ratio of the modified and non-modified fibers is 1:2. The thrown fibers are primarily wound on the central cord, and then the noncorroding metallic cords are wound over the thrown fibers.

EFFECT: enhanced reliability.

1 cl, 1 dwg

FIELD: cleaning of sulfurous alkaline runoff of fuel refining and petrochemical processes.

SUBSTANCE: proposed local cleaning of sulfurous alkaline runoff includes two stages: oxidizing stage performed by means of catalyst (modified phthalocyanine catalyst on polypropylene base) and continued for 24 h at temperature of 60-90°C and delivery of air at flow rate of 20-25 m3/h for 24 h and biological stage performed in aerobic reactor with use of biocenosis of nonwoven material-geotextile- as packing; sizes of pores of this material range from 80 to 320 mcm at thickness of cloth of 0.30-0.55 mm in the amount of 0.45-1.43 g/l; after first stage of treatment, sulfurous alkaline runoff is diluted with cleaned drainage water at mass ratio of 1:200.

EFFECT: high degree of cleaning; possibility of throwing cleaned water into pools.

2 cl, 1 tbl, 10 ex

FIELD: waste water treatment.

SUBSTANCE: invention relates to apparatuses for treating household and compositionally related industrial waste waters as well as landscape waste waters and can be used in communal services of villages, urban settlements, tourist complexes, large recreation centers, when treating landscape sewages, e.g. from fur farming areas, aperies, food industry enterprises. Plant comprises filtering self-cleaning apparatus, consumption equalizer, reagent system, clarifier, post-treatment bioreactor, and cleaned water disinfection apparatus. Clarifier is constructed in the form of adhesion apparatus with ascending waste water flow and it is filled with brushing packing. Post-treatment bioreactor is provided with brushing packing and air lift recesses. Disinfection apparatus is constructed in the form of three filter steps filled with each step-specific grainy catalyst. First filter step has descending waste water flow and the second and third ones have ascending waste water flow and bubbler system.

EFFECT: increased impurities removal efficiency, simplified operation, reduced dimensions of equipment, and reduced operation expenses.

4 dwg

FIELD: biological purification of waste waters; methods of biological purification of waste waters with utilization of particles-carriers of a biofilm.

SUBSTANCE: the invention is pertaining to the method of biological purification of waste waters, which provides for application of the system of the mixed cultures of micro-organisms, at least a part of which is fixed on the solid carriers. The carriers are set in motion with possibility to form a swirling in the reactionary medium, the intensity of which is such to ensure reduction of formation of the biological settlings. The materials forming the carriers of the micro-organisms are subjected to the abrasive machining and cleansing holding them in the reactionary medium. At that the materials have the surface texture containing the abrasive areas and the areas protected against the abrasive machining, which promote the growth of the biomasses ensuring the biological activity. Intensity of the swirling formed in the reactionary medium and depending on the amount of the energy provided by the aeration and-or intermixing of the reaction medium is within the limits from 2 up to 50 watt per m3 of the reactor. The technical result of the invention is the possibility to avoid the choking of protecting screens, reduction of the amount of the formed settlings.

EFFECT: the invention allows to avoid the choking of the protecting screens, to reduce the amount of the formed settlings.

15 cl, 12 dwg, 2 tbl, 3 ex

FIELD: environmental protection; methods of the sewage biochemical purification.

SUBSTANCE: the invention is pertaining to the field the sewage biological purification by the methods of the biochemical oxidation of the organic substances in the aerotank-displacer. The method provides for after-oxidization of the organic substances in the three-stage bioreactor of the after-purification with the active sludge return from the first stage of the bioreactor of the after-purification into the head of the sewage disposal plants. The first stage of the bioreactor of the after-purification is the aerated stage with the intensity of aeration of no less than 3 m3/m2·h, and the fibrous carriers of the biomass in the cartridges are disposed in the staggered order. On the first stage of the bioreactor of after-purification use the fibrous carriers of the biomass with the percent share of the polyamide fibers with the diameter of more than 200 microns - 100 %, and on the second and third stages - the percent share of the polyamide fibers with the diameter of more than 200 microns do not exceed 80 %. The technical result of the invention is the increase of the oxidative power of the facilities of the biochemical purification without any increase of their volume, provision of the stable operation of the facilities at variations of the hydraulic loading and the sharp jumps of the concentrations of the toxic compounds at the inlet of the sewage purification plants.

EFFECT: the invention ensures the increased oxidization power of the the biochemical purification facilities without any increase of their volume, provision of the stable operation of the facilities at variations of the hydraulic loading and the sharp jumps of the concentrations of the toxic compounds at the inlet of the sewage purification plants.

3 cl, 1 dwg

FIELD: mechanics.

SUBSTANCE: invention relates to aeration devices of minor purification installations used in separate small houses, cottages and country houses. The device contains capacity 1, biological loading, a sewage feed branch pipe, an air feed system including compressor 2 with distribution valve 3, small-bubble aerator 10 consisting of horizontal pipe 12 with a micro-punched elastic cover and a feed pipeline connected to the air feed system. Every biological loading is made in the form of section 4 and consists of, at least, two vertically arranged frames 5 with flexible spear-like structural elements 6 interconnected by racks 7. Every top frame 5 is furnished with floats 8 arranged at its top part and connected with cross-beams 9, while small-bubble aerators 10 are fixed on the bottom frames 5 and attached to the lower part of each biological loading 4 by racks 7. Every small-bubble aerator 10 is furnished with a cylindrical sinker located coaxially inside a horizontal pipe filled with a material with density considerably exceeding that of a liquid in the aforesaid capacity. Small-bubble aerators 10 are connected by means of air ducts 11 with distribution valve 3 and compressor 2.

EFFECT: higher efficiency of sewage purification and simpler design.

3 cl, 4 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

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