CN101941780A - Anaerobic and aerobic integrated high-density biological stuffing reactor - Google Patents
Anaerobic and aerobic integrated high-density biological stuffing reactor Download PDFInfo
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Abstract
The invention belongs to the technical field of sewage treatment of environmental engineering and particularly relates to an anaerobic and aerobic integrated high-density biological stuffing reactor. The reactor has a cylindrical structure and consists of an anaerobic biological stuffing regulating tank, an aerobic biological stuffing reaction tank, a secondary settling tank and a sludge storage tank, wherein the anaerobic biological stuffing regulating tank is arranged on the middle part of the reactor and the other three surround the anaerobic biological stuffing regulating tank in a radial way. Materials are integrally prepared in the reactor and moveably connected with the reactor and can be conveniently extracted from the reactor, so that the reactor can be washed and maintained regularly and operation is simple and convenient. The design fully uses the discharge characteristics of rural decentralized sewage, needs no power lifting device in a water treatment flow and has the advantages of energy conservation and low cost. Moreover, the reactor has a compact and integrated structure and occupies a small floor area; system equipment is a little, and investment and operation cost are low; and thus, the reactor is applicable in rural decentralized living sewage treatment.
Description
Technical field
The invention belongs to the environmental engineering technical field of sewage, be specifically related to a kind of anaerobic aerobic integratedization high-density biology packed column reactor.
Background technology
Rural development is the importance that advances rural urbanization, has the important strategic meaning in China's modernization.Yet the present development of countryside of China faces problems, and particularly outstanding is that the rural ecological environmental quality is continuing rapidly to worsen.China has more than 60 ten thousand administrative villages, more than 250 ten thousand natural villages, the peasant household more than 200,000,000 that living, nearly 800,000,000 populations at present.But China's country sewage processing rate is low, quantity discharged is big, daily variation factor is big, collection and treatment facility imperfection, physical environments such as water body, soil are caused severe contamination, simultaneously, country sewage causes risk of drinking water pollution, and the eutrophication phenomenon of lake, reservoir is also more and more outstanding.The most of rural residence of China disperses, and economic base is weak, landform geographical conditions complexity, and the big area sewage collecting is realized with focusing on technically and being difficult to economically.Miniaturization, change on the spot, distributing are handled and are then invested low, fast implementation.Since the seventies in 20th century, developed countries such as Japan and the United States, Europe just adopt the decentralized type sewage processing mode that rural sewage is administered, and obtain good effect.China's domestic sewage dispersant type is handled research and application starts from late 1980s, successively in the residential quarter, hotel, school, hospital etc. build Small Sewage Treatment Equipment such as a collection of septic tank, unpowered buried, micropower buried formula, play a role for alleviating the environmental pollution that municipal effluent at that time brings.At present, decentralized type sewage is handled a kind of theory and the method that has become domestic and international sanitary sewage disposal.In the countryside sewage treating process, how to use the characteristics that decentralized type sewage is handled, in conjunction with local economy level, natural condition, environmental goals, the different treatment technology of employing, the planning of suiting measures to local conditions, accelerate the wastewater treatment facility construction, it is very urgent and needs improving the rural residence environment.
As one of gordian technique of biologic packing material reactor, choosing of filler is particularly crucial.Because biologic packing material affects biological growth as microorganism carrier, breed and come off, the efficient of its usefulness and sewage disposal, energy consumption, initial cost and stability have direct relation.Since the seventies in 20th century, along with the development of plastics industry, plastic filler fixedly is being used in the packed-bed reactor gradually.Be typically the most with the honeycomb filler is the hard filler of representative.But in secular use, the honeycomb filler exposes many drawbacks gradually: specific surface area is less, and biofilm biomass is less; Water is gentle can not laterally to circulate in filler, causes the distribute water and air inequality; Easily stop up.The soft-filler that begin to occur the eighties in 20th century has overcome the deficiency of honeycomb filler.The fiber yarn of forming this filler has the easy biofilm of bigger specific surface area; Easy to process, cost is low; Space between the filler can change with gentle the flowing of water, has avoided latch up phenomenon.But soft-filler is prone to clustering phenomena after long-time the use, reduced the actual usable floor area of filler, influences treatment effect.For overcoming the deficiency of soft-filler, combined stuffing, polytype biologic packing material such as elastic solid filler semi soft packing have appearred subsequently.Along with development of technology, peak nest ceramic packing is a kind of structure of developing in the last thirty years new ceramics product like honeycomb shape.Be widely used in to today in the industry such as chemical industry, electric power, metallurgy, oil, electronic apparatus, machinery, environmental protection by using the earliest, use more and more widely at the kart tail gas clean-up.3 D elastic filler is compared with rigid class honeycomb filler, and the hole mutability is big, does not stop up; Compare with soft class filler, the material life-span is long, the adhesion conglomeration; Compare with semi soft packing, surface-area is big, biofilm is rapid, cheap.Therefore, this filler can be confirmed to be the energy-efficient novel filler of the 4th generation behind various rigid class fillers, soft class filler and semi soft packing; The less advantage of reaction back mud amount has broad application prospects.
Domestic integrated fixedly packed column reactor, for example Chinese patent 200420092487, though hydraulic detention time is short, compact construction, simple, but adopt vertical-flow, needing sump pump to provide more extra power to overcome filler resistance formation upflowing flows, energy consumption is bigger, and the microbial film flco influences effluent quality in fixing filling surface deposition.Chinese patent 200710133336 adopts pressurized aeration operation in airtight reactor, though treatment effect is better, but need provide more extra power, invest excessively, and require the manager that certain operant level is arranged, inapplicable for the processing of rural dispersed sanitary sewage.By the flow lifting type anaerobic-aerobic integral biological membrane reactor of China Mining University's design, though simple in equipment, load is high, takes up an area of and economizes, and this device denitrification effect is undesirable, and needs sump pump that current rising power is provided, and energy consumption is big.Chinese patent 95236038 adopts anaerobic pond, Aerobic Pond, the settling tank denitrogenation dephosphorizing, treatment effect is better, but three parts need can be carried out through the power transmission of sump pump, power consumption is big, and floor space is many, is not suitable as the treatment process of rural dispersed sanitary sewage.
Summary of the invention
The object of the present invention is to provide a kind of anaerobic aerobic integratedization high-density biology packed column reactor, this reactor adapted rural dispersed sewage disposal.
Content of the present invention is a kind of anaerobic aerobic integratedization high-density biology packed column reactor, this reactor is cylinder-like structure, form by anaerobe filler equalizing tank 4, aerobe filler reaction tank 5, second pond 7 and 6 four parts of storage basin, anaerobe filler equalizing tank 4 places the reactor middle part, other three parts distribute radially around anaerobe filler equalizing tank 4, wherein:
Anaerobe filler equalizing tank 4 horizontal sections are circular, comprise water inlet pipe 2, anaerobism high-density 3 D elastic filler 37, anaerobic pond V-notch weir 18 and anaerobic pond water leg 8, wherein, water inlet pipe 2 one ends are connected to water shoot, the other end is curved down by stretching into anaerobe filler equalizing tank 4 bottom water distribution uniformities in aerobe filler reaction tank 5 bottoms, reaches the effect of regulating water quality and quantity; Anaerobism high-density 3 D elastic filler 37 integral body place anaerobe filler equalizing tank 4 inside, and monnolithic case is cylindrical; Anaerobic pond V-notch weir 18 is positioned at anaerobe filler equalizing tank 4 tops, and anaerobism water leg 8 is positioned at anaerobism V-notch weir 18 outsides; Under the effect of anaerobic bacterium, can decompose the part organic pollutant, simultaneously larger molecular organics in the water is hydrolyzed to small organic molecule, alleviate the burden of follow-up aerobic treatment;
It is semi-circular that aerobe filler reaction tank 5 horizontal sections become, comprise Aerobic Pond water inlet pipe 9, aerobic high-density 3 D elastic filler 38, aeration main 22, aeration arm 23, Aerobic Pond V-notch weir 20 and Aerobic Pond water leg 10, wherein, Aerobic Pond water inlet pipe 9 one ends are connected to anaerobic pond water leg 8 bottoms, and the other end is down curved to be stretched into aerobe filler reaction tank 5 bottoms and evenly intake; Aerobic high-density 3 D elastic filler 38 monnolithic cases are body ringwise, places aerobe filler reaction tank 5 inside; Aeration main 22 is fixed in the arc middle portion of semi-circular plane near anaerobe filler equalizing tank 4, one end is connected to micro air pump 40 by sleeve pipe 1, the open and close of aeration phase are by magnetic valve 39 controls, and the other end gos deep into aerobe filler reaction tank 4 and is connected with aeration arm 23; Aeration arm 23 distributes in aerobic high-density 3 D elastic filler 38 bottom homogeneous radiations, plays the oxygenation stirring action; Aerobic Pond V-notch weir 20 is positioned at aerobe filler reaction tank 5 near second pond 7 one side tops; Aerobic Pond water leg 10 is provided with near second pond 7 partition wall places in aerobic V-notch weir outside;
Among the present invention, the filler of described anaerobism high-density 3 D elastic filler 37 and aerobic high-density 3 D elastic filler 38 is a high-density 3 D elastic filler 26, utilize filler rope 27 that it is conspired to create linear one, hang draw ring 24 by annular steel pipe 25, steel pipe support 28, lifting again and manufacture integrated filler, connect with reactor is movable, can from reactor, propose easily by lifting suspension ring 24, carry out routine cleaning and safeguard, move easy.
Among the present invention, described second pond mud airlift 16 is made up of first liter of mud pipe 29, first blast main 30, first nozzle 31, be connected by first nozzle 31 that is positioned at first liter of mud pipe 29 bottom between first liter of mud pipe 29 and first blast main 30, first blast main 30 directly links to each other with micro air pump 40 by sleeve pipe 1.
Among the present invention, described storage basin mud airlift 17 is made up of second liter of mud pipe 32, second blast main 33, second nozzle 34, be fixed on storage basin 6 arcual middle portions by second retaining plate 36, be connected by second nozzle 34 that is positioned at second liter of mud pipe 32 bottom between second liter of mud pipe 32 and second blast main 33, second blast main 33 directly links to each other with micro air pump 40 by sleeve pipe 1.
Beneficial effect of the present invention is:
1 integrated degree height.The present invention is integrated with anaerobe filler equalizing tank, aerobe filler reaction tank, second pond, four functional units of storage basin, has functions such as the organism of removal, denitrogenation, mud management.Wherein, anaerobe filler equalizing tank places the device middle part, and other three functional units distribute radially around anaerobism fixed bed biologic packing material equalizing tank.Whole apparatus main body is a right cylinder, and compact more between processing unit, floor space is littler, can save building materials in a large number and help capital construction and the reduction of running cost.
2 anaerobe filler equalizing tanks and aerobe filler reaction tank all adopt the high-density 3 D elastic filler, and its tamped density is far above the catalytic oxidation on the common meaning, a little less than the biological filter.Therefore, anaerobic zone and aerobic zone have high biomass, are not easy to again simultaneously stop up.In addition, this filler is taked integrated setting, connects with reactor itself is movable, can propose from reactor easily, carries out routine cleaning and safeguards, moves easy
3 the present invention are not provided with preliminary sedimentation tank and anoxic pond, and anoxic biologic packing material equalizing tank plays the effect of regulating pondage water quality, acidication simultaneously.To the entering organic matter of water acidifying that is hydrolyzed, improve the biodegradability of sewage by the microorganism on the filler.The anoxic biologic packing material also adopts elastic solid filler, utilizes the filler rope that it is conspired to create linear one, and hanging by annular steel pipe, steel pipe support, lifting that draw ring is processed into again can the whole integrated filler that takes out.
4 usefulness air-lift devices substitute lift pump and realize mud transfer and flow control, do not need substantially other power-lift equipment is set, and not only cost is with low cost, also avoid the obstruction of pump, do not have the problem of burning pump, control without liquid level, therefore, saved equipment cost and simplified operation.Simultaneously, air-lift device of the present invention can promote flow and lift height demand flexible design according to different occasions.
5 the present invention can be adjusted Design and Machining according to scale and the characteristics of using object, also can form complete standardized product, convenient processing and on-the-spot the installation.
6 integrated air-lift loop floating stuffing decentralized wastewater biological reaction apparatus initial costs of the present invention are low, and treatment effect is good, and the operation operation is simple, are suitable for rural decentralized wastewater and handle.
Description of drawings
Fig. 1 is an anaerobic aerobic integratedization high-density biology packed column reactor structural representation;
Fig. 2 is the vertical view of anaerobic aerobic integratedization high-density biology packed column reactor;
Fig. 3 is the A-A sectional view of anaerobic aerobic integratedization high-density biology packed column reactor;
Fig. 4 is the B-B sectional view of anaerobic aerobic integratedization high-density biology packed column reactor;
Fig. 5 is the C-C sectional view of anaerobic aerobic integratedization high-density biology packed column reactor;
Fig. 6 is the anaerobism one biologic packing material figure of anaerobic aerobic integratedization high-density biology packed column reactor, and wherein: (a) being orthographic plan, (b) is sectional view.
Fig. 7 is the aerobic integrated biologic packing material cross-sectional view of anaerobic aerobic integratedization high-density biology packed column reactor;
Fig. 8 is the second pond mud airlift cross-sectional view of anaerobic aerobic integratedization high-density biology packed column reactor; Wherein: (a) being second pond mud airlift front view, (b) is second pond mud airlift side-view, (c) is second pond mud airlift vertical view.
Fig. 9 is the storage basin mud airlift cross-sectional view of anaerobic aerobic integratedization high-density biology packed column reactor; Wherein: (a) being storage basin mud airlift front view, (b) is storage basin mud airlift side-view, (c) is storage basin mud airlift vertical view.
Number in the figure is: 1 is sleeve pipe, 2 is water inlet pipe, 3 is the bucking ladder cover plate, and 4 is anaerobe filler equalizing tank, and 5 is that aerobe filler reaction tank 6 is storage basin, 7 is second pond, 8 is the anaerobic pond water leg, and 9 is the Aerobic Pond water inlet pipe, and 10 is the Aerobic Pond water leg, 11 is the second pond water leg, 12 is reflector, and 13 is pipe core, and 14 is the second pond water inlet pipe, 15 is the supernatant liquor upflow tube, 16 is second pond mud airlift, and 17 is storage basin mud airlift, and 18 is the anaerobic pond V-notch weir, 19 is the second pond V-notch weir, 20 is the Aerobic Pond V-notch weir, and 21 is rising pipe, and 22 is the aeration main, 23 is the aeration arm, 24 is to promote to hang draw ring, and 25 is annular steel pipe, and 26 is 3 D elastic filler, 27 is the filler rope, 28 is steel pipe support, and 29 is first liter of mud pipe, and 30 is first blast main, 31 is first nozzle, 32 is second liter of mud pipe, and 33 is second blast main, and 34 is second nozzle, 35 is first retaining plate, 36 is second retaining plate, and 37 is anaerobism high-density 3 D elastic filler, and 38 is aerobic high-density 3 D elastic filler, 39 is magnetic valve, and 40 is micro air pump.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples, rather than limit the scope of the invention.
Embodiment 1: the discharge of sewage is 1m
3/ d, BOD
5Be 200mg/L, ammonia nitrogen concentration is 40mg/L.
Shown in Fig. 1-7, anaerobic aerobic integratedization high-density biology packed column reactor useful volume is 3.56m
3, the whole reactor plane is that circular area is 2.54m
2, virtual height is 1.40m, aspect ratio is 1.2.This reactor is integrated with four functional units such as anaerobe filler equalizing tank 4, aerobe filler reaction tank 5, second pond 7, mud storage pools 6, and its volume is respectively 0.675m
3, 0.675m
3, 0.135m
3, 0.594m
3Anaerobe filler equalizing tank 4 places the reactor middle part, and other three functional units are radially around distributing.
Anaerobe filler equalizing tank 4, hydraulic detention time HRT is 15h, sewage enters anaerobe filler equalizing tank 4 by DN40 water inlet pipe 2, and water inlet pipe is bent for 2 times and goed deep into anaerobe filler equalizing tank 4 inside, water distribution uniformity by aerobe filler reaction tank 5 bottoms.Anaerobism high-density 3 D elastic filler 37 wherein is set, monnolithic case is cylindrical, filler is a high-density 3 D elastic filler 26, filler adopts D=120 elastic solid filler 26, its tamped density is far above the catalytic oxidation on the common meaning, a little less than the biological filter, have high biomass, be not easy to again simultaneously stop up.In addition, utilize filler rope 27 that it is conspired to create linear one, hang draw ring 24 by annular steel pipe 25, steel pipe support 28, lifting again and manufacture the integrated filler of anaerobism, connect with reactor itself is movable, can from reactor, propose easily by lifting suspension ring 24, carry out routine cleaning and safeguard, move easy; Wherein, bottom mud plays the effect of anaerobic hydrolysis-acidification, and sewage is collected by anaerobism water leg 8 by 18 water outlets of anaerobic pond V-notch weir.
Aerobe filler reaction tank 5 hydraulic detention time HRT are 15h, and sewage is by DN50 Aerobic Pond water inlet pipe 9 water inlets that are connected to anaerobic pond water leg 8; Wherein throw aerobic high-density 3 D elastic filler 38 into, filler is a high-density 3 D elastic filler 26, and filler adopts D=120 elastic solid filler 26, its tamped density is far above the catalytic oxidation on the common meaning, a little less than the biological filter, have high biomass, be not easy to again simultaneously stop up.In addition, utilize filler rope 27 that it is conspired to create linear one, hang draw ring 24 by annular steel pipe 25, steel pipe support 28, lifting again and manufacture the integrated filler of anaerobism, connect with reactor itself is movable, can from reactor, propose easily by lifting suspension ring 24, carry out routine cleaning and safeguard, move easy; Adopt the aerating tube-type micropore pipe to carry out aeration, aeration main 22 directly links to each other with micro air pump 40, air is delivered to aeration arm 23 by aeration main 22, oxygen utilization efficient is about 18%, aeration main 22 diameters are DN20, aeration arm 23 diameters are DN15, and 200mm at the bottom of the pond plays oxygenation and stirring action.Handle the back by aerobic V-notch weir 20 water outlets, aerobic water leg 10 is collected,
Claims (4)
1. anaerobic aerobic integratedization high-density biology packed column reactor, this reactor is cylinder-like structure, form by anaerobe filler equalizing tank (4), aerobe filler reaction tank (5), second pond (7) and (6) four parts of storage basin, anaerobe filler equalizing tank () 4 places the reactor middle part, aerobe filler reaction tank (5), second pond (7) and storage basin (6) distribute radially around anaerobe filler equalizing tank (4), it is characterized in that:
Anaerobe filler equalizing tank (4) horizontal section is circular, comprise water inlet pipe (2), anaerobism high-density 3 D elastic filler (37), anaerobic pond V-notch weir (18) and anaerobic pond water leg (8), wherein, water inlet pipe (2) one ends are connected to water shoot, and the other end is curved down by stretching into anaerobe filler equalizing tank (4) bottom water distribution uniformity in aerobe filler reaction tank (5) bottom; Anaerobism high-density 3 D elastic filler (37) integral body places anaerobe filler equalizing tank (4) inside, and monnolithic case is cylindrical; Anaerobic pond V-notch weir (18) is positioned at anaerobe filler equalizing tank (4) top, and anaerobism water leg (8) is positioned at anaerobism V-notch weir (18) outside;
It is semi-circular that aerobe filler reaction tank (5) horizontal section becomes, comprise Aerobic Pond water inlet pipe (9), aerobic high-density 3 D elastic filler (38), aeration main (22), aeration arm (23), Aerobic Pond V-notch weir (20) and Aerobic Pond water leg (10), wherein, Aerobic Pond water inlet pipe (9) one ends are connected to anaerobic pond water leg (8) bottom, and the other end is curved down to be stretched into aerobe filler reaction tank (5) bottom and evenly intake; Aerobic high-density 3 D elastic filler (38) monnolithic case is body ringwise, places aerobe filler reaction tank (5) inside; Aeration main (22) is fixed in the arc middle portion of semi-circular plane near anaerobe filler equalizing tank (4), one end is connected to micro air pump (40) by sleeve pipe (1), the open and close of aeration phase are by magnetic valve (39) control, and the other end gos deep into aerobe filler reaction tank (4) and is connected with aeration arm (23); Aeration arm (23) distributes in aerobic high-density 3 D elastic filler (38) bottom homogeneous radiation; Aerobic Pond V-notch weir (20) is positioned at aerobe filler reaction tank (5) near second pond (7) one side tops; Aerobic Pond water leg (10) is provided with near second pond (7) partition wall place in aerobic V-notch weir outside;
Second pond (7) is annular vertical sedimentation basin, comprise second pond water inlet pipe (14), pipe core (13), reflector (12), second pond V-notch weir (19), second pond water leg (11), rising pipe (21) and second pond mud airlift (16), second pond water inlet pipe (14) one ends are connected to Aerobic Pond water leg (10) bottom, the other end links to each other with pipe core (13) by elbow, reflector (12) is positioned under the pipe core (13), second pond V-notch weir (19) is positioned at second pond (7) pool wall top, second pond water leg (11) is positioned at second pond V-notch weir (19) outside, rising pipe (21) is positioned at second pond water leg (11) one sides, and second pond mud airlift (16) is fixed on the partition wall of second pond (7) and storage basin (6) by first retaining plate (35);
Storage basin (6) comprises supernatant liquor upflow tube (15) and storage basin mud airlift (17), supernatant liquor upflow tube (15) is positioned on storage basin (6) and anaerobe filler equalizing tank (4) division wall, when storage basin (6) mud reached a certain amount of, supernatant liquor passed through supernatant liquor upflow tube (15) overflow to anaerobe filler equalizing tank (4).
2. a kind of anaerobic aerobic integratedization high-density biology packed column reactor according to claim 1, it is characterized in that: the filler of described anaerobism high-density 3 D elastic filler (37) and aerobic high-density 3 D elastic filler (38) is high-density 3 D elastic filler (26), utilize filler rope (27) that it is conspired to create linear one, hang draw ring (24) by annular steel pipe (25), steel pipe support (28), lifting again and manufacture integrated filler, connect with reactor is movable, from reactor, propose by lifting suspension ring (24).
3. a kind of anaerobic aerobic integratedization high-density biology packed column reactor according to claim 1, it is characterized in that: described second pond mud airlift (16) is made up of first liter of mud pipe (29), first blast main (30), first nozzle (31), is connected by first nozzle (31) that is positioned at first liter of mud pipe (29) bottom between first liter of mud pipe (29) and first blast main (30), first blast main (30) passes through sleeve pipe (1) and directly links to each other with micro air pump (40).
4. a kind of anaerobic aerobic integratedization high-density biology packed column reactor according to claim 1, it is characterized in that: described storage basin mud airlift (17) is made up of second liter of mud pipe (32), second blast main (33), second nozzle (34), be fixed on the arcual middle portion of storage basin (6) by second retaining plate (36), is connected by second nozzle (34) that is positioned at second liter of mud pipe (32) bottom between second liter of mud pipe (32) and second blast main (33), second blast main (33) passes through sleeve pipe (1) and directly links to each other with micro air pump (40).
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| CN2010102765546A CN101941780B (en) | 2010-09-09 | 2010-09-09 | Anaerobic and aerobic integrated high-density biological stuffing reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102765546A CN101941780B (en) | 2010-09-09 | 2010-09-09 | Anaerobic and aerobic integrated high-density biological stuffing reactor |
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| CN101941780A true CN101941780A (en) | 2011-01-12 |
| CN101941780B CN101941780B (en) | 2012-01-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659227A (en) * | 2012-05-03 | 2012-09-12 | 绍兴市制水有限公司曹娥江分公司 | Middle-set type high density sediment water purification tank and purification technology thereof |
| CN104671408A (en) * | 2014-12-31 | 2015-06-03 | 广西汇泰环保科技有限公司 | Scattered small integrated sewage processing device for rural areas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894149A (en) * | 1988-09-16 | 1990-01-16 | Block Steven J | Biological filtration device |
| CN2611359Y (en) * | 2003-02-17 | 2004-04-14 | 魏志文 | Combined two-way stream aerating biological filter chamber unit |
| CN201245504Y (en) * | 2008-08-22 | 2009-05-27 | 刘绍林 | Prepositive anoxic bio-aeration filter apparatus |
-
2010
- 2010-09-09 CN CN2010102765546A patent/CN101941780B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4894149A (en) * | 1988-09-16 | 1990-01-16 | Block Steven J | Biological filtration device |
| CN2611359Y (en) * | 2003-02-17 | 2004-04-14 | 魏志文 | Combined two-way stream aerating biological filter chamber unit |
| CN201245504Y (en) * | 2008-08-22 | 2009-05-27 | 刘绍林 | Prepositive anoxic bio-aeration filter apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659227A (en) * | 2012-05-03 | 2012-09-12 | 绍兴市制水有限公司曹娥江分公司 | Middle-set type high density sediment water purification tank and purification technology thereof |
| CN104671408A (en) * | 2014-12-31 | 2015-06-03 | 广西汇泰环保科技有限公司 | Scattered small integrated sewage processing device for rural areas |
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| CN101941780B (en) | 2012-01-25 |
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