CN1821123B - Device and method for anaerobic treating waste water and method of propagating active granular bacteria strain at normal termperature - Google Patents
Device and method for anaerobic treating waste water and method of propagating active granular bacteria strain at normal termperature Download PDFInfo
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- CN1821123B CN1821123B CN2006100498703A CN200610049870A CN1821123B CN 1821123 B CN1821123 B CN 1821123B CN 2006100498703 A CN2006100498703 A CN 2006100498703A CN 200610049870 A CN200610049870 A CN 200610049870A CN 1821123 B CN1821123 B CN 1821123B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The anaerobic waste water treating apparatus includes a waste water treating tank and water distributing pipe. It has one bioreaction area, which consists of a sludge bed reaction area and a filtering bed reaction area; and one gas separating area or deposition area on the bioreaction area. Inside the waste water treating tank, there are a frame, a movable gas cabinet in the top over the gas separating area and a screw stirrer in the lower part. It has no pressure difference between the gas separating area and the liquid separate area, so that waste water can move freely up and down and inside and outside to create one excellent growth condition for cultivated bacteria strain and reach high waste water treating effect in low cost.
Description
One, affiliated technical field
The invention belongs to field of waste water treatment, relate to and be used for anaerobic treatment equipment for wastewater with the method for utilizing this device processing waste water and utilize this device to produce active particle mud bacterial classification method at normal temperatures.
Two, background technology
Now, improving constantly of living standards of the people, also more and more higher to the requirement that improves environmental quality.But at present domestic waste water (sanitary wastewater such as human and animal excreta and trade effluent) quantity discharged increases day by day, directly exhaust emission rivers and lakes.In the prior art, the waste water of handling high density adopts the anaerobic treatment method mostly at home, and the key link of anaerobic treatment method is to be added in the waste water of processing having active anaerobic grain sludge bacterial classification, carries out the inoculation and the breeding of bacterial classification.Active anaerobic grain sludge bacterium is the core of technology, and the active anaerobic grain sludge bacterium source that is added at present in the waste water of processing has two kinds.First kind is to cultivate voluntarily in waste water, relies in the waste water existing a small amount of bacterial classification to tame and cultivate, and cultivates into active anaerobic grain sludge bacterium gradually, and it is long that this method is cultivated time of bacterial classification, required facility bulky, and floor space is big, and investment is wasted; Second kind is to form active anaerobic grain sludge bacterium in the anaerobic treatment equipment for wastewater of operation now, and inoculates and breed.
Anaerobic treatment equipment for wastewater has anaerobic biofilter (AF) reactor at present, anaerobic grain sludge expanded bed (EGSB) reactor, upflow anaerobic sludge blanket process (UASB) reactor and composite anaerobic treatment unit (UBF).Water distributor is installed in the bottom of anaerobic biofilter in the pond, is provided with filler in the pond, as Chinese patent disclosed " mixed flow expanded bed anaerobic microorganism filter tank " (CN200420112056.8, CN2739172, day for announcing 2005.11.09).Anaerobic grain sludge expanded bed (EGSB) reactor, as Chinese patent disclosed " anaerobic grain sludge expanded bed " (CN03214419.9, CN2594262, day for announcing 2003.12.24), it becomes cylindric, the bottom of expanded bed is equipped with water distributor and return line, between water distributor and return line, be provided with the cloth pool, the middle part of expanded bed is equipped with the two separate cover, the top of expanded bed is equipped with three layers of separation hood, be provided with effluent weir above the superiors' separation hood, the top of expanded bed is provided with the biogas vent pipe, and the top outer of expanded bed is provided with water outlet.Upflow anaerobic sludge blanket process, can be divided into three parts on structure and function: first part is the plenum system of former water, is made up of former water transfer lime and the water distributor that current are evenly supplied with on the device section; Second section is a reaction zone, and the fixed bed district that is made of granule sludge and the suspended sludge area on its top constitute; Third part is the gas-liquid-solid three-phase disengaging zone, is made of triphase separator, is positioned at the top of device.As Chinese patent disclosed " upflow anaerobic sludge blanket reactor " (CN200320121543.6, CN2663408, day for announcing 2004.12.15).The composite anaerobic treatment unit then is to have increased an anaerobe filter bed district (AF) between the reaction zone of upflow anaerobic sludge blanket process and three-phase separation area.As the disclosed composite anaerobic biological effluent treatment of Chinese patent reactor (CN200320110409.6, CN2654598, day for announcing 2004.11.10).
The weak point of above anaerobic processing device is: the collection chamber on (1) device top is extremely to seal fixed, and the biogas that is produced is sent in the gas holder with pneumatic tube and deposits under the effect of collection chamber top pressure.People want to utilize biogas, can only deliver to the user with pipeline from gas holder, and this has not only increased the expense of building a gas holder in addition, has also increased floor space.More have shortcoming be those anaerobic processing devices be always interior have the design 0.8 meter water column pressure environment under spend, very unfavorable to the biological fermentation bacterial classification of inside, increase burden unconsciously.(2) the most of stirring when all leaning on charging of traditional popular carried out with the water distributor upwelling, has the dead angle of different zones significantly.(3) owing to active anaerobic grain sludge bacterium domestication incubation period under the normal temperature is long, cause the initial start time long; In order to shorten the initial start time, must add a large amount of active anaerobic grain sludge bacterial classifications or improve temperature in the pond, as Chinese patent disclosed " method of anaerobic reation pool and processing waste water " (ZL971170924, CN1072613C, the October 10 calendar year 2001 day for announcing), temperature is 34 ℃-39 ℃ in the pond, has increased working cost.
Three, summary of the invention
One of purpose of the present invention is to overcome the deficiency that prior art exists, a kind of anaerobic treatment equipment for wastewater and method are provided, it has improved the COD volumetric loading, remove organic broad spectrum, biogas output capacity and waste water COD clearance, handle profitable, raw material range is wide, floor space is few, and initial cost is economized, and has reduced working cost.
Another object of the present invention is to provide a kind of normal temperature multiplication activity anaerobic grain sludge bacterial classification method, and this method is simple, and cost is low.
For achieving the above object, the solution that the present invention takes is: a kind of anaerobic treatment equipment for wastewater, it comprises waste water treatment tank, water distributor, bio-reaction zone, bio-reaction zone top and what be bordered with it is the gas delivery district, at the top of waste water treatment tank movable gas holder is set, movable gas holder is on the gas delivery district water surface.Waste water flows through bio-reaction zone, organism wherein is converted into methane and carbon dioxide, formation comprises the gas, liquid, solid three-phase fluid of bubble and suspended sludge, pass through the interception mud of filter bed reaction zone and separating of gas disengaging zone again, the gas that rises is in the movable gas holder at top, and movable gas holder moves up under the gas that makes progress promotes, and it moves down again when user's usefulness gas, ceaselessly movable up and down like this, played the effect of triphase separator.Waste water is isolating under the situation of no pressure and normal temperature (2 ℃-20 ℃), and current are discharged from water sealed tank, and circulation again in the bio-reaction zone is then held back and be back to mud effectively.Because movable gas holder does not have sealing weld extremely on waste water treatment tank, it has changed the environment of existing apparatus 0.8 meter water column pressure, makes that waste water freely moves up and down under stress-free environment, inside and outside flowing, and gives to cultivate bacterial classification and caused a good growing environment.
Four, description of drawings
Fig. 1 is the section structure synoptic diagram of present embodiment.
Fig. 2 is the outside view (amplify, the figure medium square length of side is 1 millimeter) of active particle mud bacterial classification.
Among Fig. 1: 1, waste water treatment tank, 2, the Sludge Bed reaction zone, 3, the mud traverse baffle, 4, the settling region, 10, water distributor, 11, acid-fermentation granule sludge layer, 12, methane fermentation granule sludge layer, 13, the sludge blanket that swims, 14, the filter bed reaction zone, 15, the return flow line, 16, the liquid displacement zone water surface, 17, water sealed tank, 18, the gas delivery district, 19, liquid-solid two-phase flow decline passway, 20, framework, 21, the biologic packing material layer, 22, biogas pipeline, 23, the gas holder guide wheel, 24, track, 25, movable gas holder, 27, balancing weight, 28, biogas overflows pipeline, and 29, spiral whipping appts, 30, thermal insulation layer.
Five, embodiment
Below in conjunction with embodiment and accompanying drawing thereof the positively effect of the present invention and generation thereof is remake description.
Referring to Fig. 1, a kind of anaerobic treatment equipment for wastewater, it comprises waste water treatment tank 1, water distributor 10, water distributor 10 be positioned at the bottommost of waste water treatment tank 1 and bio-reaction zone below, bio-reaction zone is positioned at the bottom of waste water treatment tank 1, bio-reaction zone is made of Sludge Bed reaction zone 2 and filter bed reaction zone 14 two portions, Sludge Bed reaction zone 2 is below filter bed reaction zone 14, Sludge Bed reaction zone 2 comprises two intensive granule sludge layers, it is acid-fermentation granule sludge layer 11, methane fermentation granule sludge layer 12 and the sludge blanket 13 that swims that contains flco shape mud and the strong mud of particle constitute, filter bed reaction zone 14 is made of biologic packing material layer 21, it is filter bed reaction zone 14 from the top down successively that the bio-reaction zone each several part is formed with putting in order, sludge blanket 13 swims, methane fermentation granule sludge layer 12 and acid-fermentation granule sludge layer 11, bio-reaction zone top in the waste water treatment tank 1 and what be bordered with it is that gas delivery district 18 is settling region 18, the framework 20 that is provided for supporting biologic packing material in the waste water treatment tank 1 has formed circle in the waste water treatment tank 1, movable gas holder 25 is set at the top of waste water treatment tank 1, movable gas holder 25 is in gas delivery district 18, gas delivery district 18 waters surface and the liquid displacement zone water surface 16 are at the same water surface, there is not inside and outside differential pressure, its underpart and waste water treatment tank 1 inwall gap constituted return flow line 15 when movable gas holder 25 rose, and its underpart and waste water treatment tank 1 inwall gap constituted liquid-solid two-phase flow decline passway 19 when movable gas holder 25 descended; On water distributor 10, in acid-fermentation granule sludge layer 11, spiral whipping appts 29 is installed on the lower part wall of waste water treatment tank 1.Spiral whipping appts 29 adopts computer to control automatically, comprehensive stirring all is stirred all blind sectors, has not only avoided the mud in the bio-reaction zone excessively to put aside, the mediation effect is played in the obstruction of biologic packing material layer 21, but also impelled mud to pass filter bed reaction zone 14 or decline.
Referring to Fig. 1, liquid-solid two-phase flow decline passway 19 times, on the inwall of the middle part of waste water treatment tank 1, mud traverse baffle 3 is installed, be convenient to liquid-solid under action of gravity, decline automatically and return the sludge blanket 13 that swims through liquid-solid two-phase flow decline passway 19.Movable gas holder 25 is installed on the track 24 by gas holder guide wheel 23.Movable gas holder 25 disposes balancing weight 27 up and down.Waste water treatment tank 1 and movable gas holder 25 are steel plate structure, and waste water treatment tank 1 and movable gas holder 25 inner-wall sprayings are useful on rot-resistant glass reinforced plastic, improve device work-ing life.Waste water treatment tank 1 outer wall increases thermal insulation layer 30, guarantees that the temperature remains within the normal range (2 ℃-20 ℃) in the device.Biogas pipeline 22 is set in the waste water treatment tank 1, and biogas pipeline 22 is suitable for reading on gas delivery district 18 waters surface, and the air outlet is in waste water treatment tank 1 bottom, and biogas pipeline 22 leads to the user.In the movable gas holder 25 biogas is set and overflows pipeline 28, biogas overflows pipeline 28 end openings on gas delivery district 18 waters surface, and spillway is at movable gas holder 25 tops, biogas is set overflows pipeline 28 and guarantee the device safe handling.1 meter of biologic packing material layer 21 thickness, fill with a line or two wires rotate up always formula be rolled into central hollow, easy to be filmed, easily demoulding, the spandex fiber filler that is in operation and is difficult for short circuit and obstruction, biologic packing material layer 21 voidage improve waste water treatment efficiency more than 93%.
Referring to Fig. 1, wastewater treatment concrete operations step of the present invention is: water distributor 10 adopts computer intermittently to advance Yuan Shui in 24 hours, stop stopping 30 minutes according to the former water yield, started 1-5 minute, spiral whipping appts 29 adopts computer to control automatically, comprehensive stirring, according to stirring 1-4 time different selected every days in season, each 30 minutes, former water forms uniform ascending current through water distributor 10 on the transverse section of device, the organism that is contained in the current is at first in acid-fermentation granule sludge layer 11, hydrolysis and acid-producing bacteria by the granule sludge that forms in this layer are decomposed into voltaile fatty acid and carbonic acid gas, voltaile fatty acid is again in methane fermentation granule sludge layer 12, further be formed the granule sludge methanogen and be decomposed into methane and carbonic acid gas, methane that is produced and carbon dioxide form a large amount of micro-bubbles, these bubbles are mixed in the current of rising, pass filter bed reaction zone 14 with some together because of the flco shape mud or the particulate state mud that have adhered to bubble or floated by the drag force of current, part mud is held back by biologic packing material layer 21, simultaneously not at the Sludge Bed reaction zone 2 thorough organism of removing, also be grown in the microbiological deterioration in the microbial film of filling surface, further removed; After passing the gas-liquid-solid three-phase mixed solution inflow gas disengaging zone 18 of filter bed reaction zone 14, because the oscilaltion effect of movable gas holder 25, the very fast evolving gas of gas disengaging zone 18 enters movable gas holder 25, give follow-up biogas utilization facility by biogas pipeline 22, remaining liquid-solid mixture descends automatically and returns bio-reaction zone by return flow line 15 or liquid-solid two-phase flow decline passway 19, forms cycling stream in this zone; The most of liquid-solid mixture of circle returns the sludge blanket 13 that swims from filter bed reaction zone 14 in device, the liquid-solid mixture that this zone is returned with the device cylindrical converges the back and forms cycling stream in partnership, because former water intermittently adds cycling stream, naturally a part comes in contact throwing out with the sludge blanket 13 that swims and is retained down, current then pass this zone through overflow weir and water sealed tank 17 dischargers, and current do not circulate.
Referring to Fig. 1, propagating active granular mud bacterial classification concrete operations step is under the normal temperature of the present invention: the active bamboo carbon of placing particle diameter and be the 0.05-0.1 millimeter in acid-fermentation granule sludge layer 11 is as the one-level core carrier, the one-level core carrier mixes immersion through similar active sludge more than 2 hours after, when the device initial start-up, in acid-fermentation granule sludge layer 11, also drop into cationic polyacrylamide and alum, cationic polyacrylamide and alum fully cooperate, play the effect of absorption crane span structure, starter gear carries out normal wastewater treatment program, propagating active granular mud bacterial classification under the normal temperature, take out active particle mud bacterial classification, maximum particle diameter can reach 2.5 millimeters.
The present invention compared with prior art has the following advantages: (1) prior art generally adopts collection chamber, the dead sealing of collection chamber fixes on the top of anaerobic jar, the biogas that makes generation is all the time under collection chamber 0.8 meter water column pressure effect, deliver in the gas holder of building one in addition with pneumatic tube and to deposit, increase the expense of building a gas holder in addition and increased floor space, main problem is that the environment of breeding granular bacteria strain in device is unfavorable, and particularly propagating active granular mud bacterial classification difficulty is very big at normal temperatures.Waste water treatment tank 1 (anaerobic jar) and movable gas holder 25 organic assembling have solved this problem preferably, can be at normal temperatures propagating active granular mud bacterial classification in large quantities.(2) set up spiral whipping appts 29 in the device, remedied the deficiency of water distributor 10 single upwellings, comprehensive stirring all is stirred all blind sectors, active bamboo carbon and mud are in contact with one another with fused, and faster and better at normal temperatures ground is propagating active granular mud bacterial classification in large quantities.(3) because active bamboo carbon molecular structure is sexangle, fine and closely woven porous, surface-area is 700 square metres of each grams, be 3 times of general activated carbon, adsorptive power is more than 10 times of activated carbon, it helps faster and better at normal temperatures ground propagating active granular mud bacterial classification in large quantities as the one-level core carrier.
The present invention's examination is applied to the high-concentration waste water on a plurality of big-and-middle-sized pig farms and handles, steady running under normal temperature (2-20 ℃) high loading, and the organic removal rate COD (TOC meter) in the waste water is reached more than 95%, the clearance of this load takes the lead in anaerobic treatment equipment for wastewater.
Claims (5)
1. anaerobic treatment equipment for wastewater, it comprises waste water treatment tank (1), water distributor (10), water distributor (10) be positioned at the bottommost of waste water treatment tank (1) and bio-reaction zone below, bio-reaction zone is positioned at the bottom of waste water treatment tank (1), bio-reaction zone is made of Sludge Bed reaction zone (2) and filter bed reaction zone (14) two portions, Sludge Bed reaction zone (2) is below filter bed reaction zone (14), Sludge Bed reaction zone (2) comprises two intensive granule sludge layers, it is acid-fermentation granule sludge layer (11), methane fermentation granule sludge layer (12) and the sludge blanket that swims (13) that contains flco shape mud and particulate state mud constitute, filter bed reaction zone (14) is made of biologic packing material layer (21), it is filter bed reaction zone (14) from the top down successively that the bio-reaction zone each several part is formed with putting in order, sludge blanket (13) swims, methane fermentation granule sludge layer (12) and acid-fermentation granule sludge layer (11), bio-reaction zone top in the waste water treatment tank (1) and what be bordered with it is that gas delivery district (18) is settling region (18), the framework (20) that is provided for supporting biologic packing material in the waste water treatment tank (1) has formed circle in the waste water treatment tank (1), spiral whipping appts (29) is installed on the lower part wall of waste water treatment tank (1), this spiral whipping appts (29) is positioned at water distributor (10) top, be arranged in acid-fermentation granule sludge layer (11), mud traverse baffle (3) is installed on the middle part inwall of waste water treatment tank (1), this mud traverse baffle (3) is positioned at liquid-solid two-phase flow decline passway (19) bottom, biogas pipeline (22) is set in the waste water treatment tank (1), biogas pipeline (22) is suitable for reading on gas delivery district (18) water surface, the air outlet is in waste water treatment tank (1) bottom, it is characterized in that: movable gas holder (25) is set at the top of waste water treatment tank (1), movable gas holder (25) is on gas delivery district (18), gas delivery district (18) water surface and the liquid displacement zone water surface (16) are at the same water surface, there is not inside and outside differential pressure, its underpart and waste water treatment tank (1) inwall gap constituted return flow line (15) when movable gas holder (25) rose, its underpart and waste water treatment tank (1) inwall gap constituted liquid-solid two-phase flow decline passway (19) when movable gas holder (25) descended, movable gas holder (25) is installed on the track (24) by gas holder guide wheel (23), movable gas holder (25) disposes balancing weight (27) up and down, biogas is set in the movable gas holder of waste water treatment tank (1) (25) overflows pipeline (28), biogas overflows pipeline (28) end opening on gas delivery district (18) water surface, and spillway is at movable gas holder (25) top.
2. anaerobic treatment equipment for wastewater according to claim 1, it is characterized in that: waste water treatment tank (1) and movable gas holder (25) are steel plate structure, waste water treatment tank (1) and movable gas holder (25) inner-wall spraying are useful on rot-resistant glass reinforced plastic, and waste water treatment tank (1) outer wall increases thermal insulation layer (30).
3. anaerobic treatment equipment for wastewater according to claim 1, it is characterized in that: 1 meter of biologic packing material layer (21) thickness, fill with a line or two wires rotate up always formula be rolled into central hollow, easy to be filmed, easily demoulding, the spandex fiber filler that is in operation and is difficult for short circuit and obstruction, biologic packing material layer (21) voidage is more than 93%.
4. method of utilizing claim 1 or 3 described anaerobic treatment equipment for wastewater to realize wastewater treatments, it is characterized in that: water distributor (10) adopts computer intermittently to advance Yuan Shui in 24 hours, stop stopping 30 minutes according to the former water yield, started 1-5 minute, spiral whipping appts (29) adopts computer to control automatically, comprehensive stirring, according to stirring 1-4 time different selected every days in season, each 30 minutes, former water forms uniform ascending current through water distributor (10) on the transverse section of device, the organism that is contained in the current is at first in acid-fermentation granule sludge layer (11), hydrolysis and acid-producing bacteria by the granule sludge that forms in this layer are decomposed into voltaile fatty acid and carbonic acid gas, voltaile fatty acid is again in methane fermentation granule sludge layer (12), further be formed the granule sludge methanogen and be decomposed into methane and carbonic acid gas, methane that is produced and carbon dioxide form a large amount of micro-bubbles, these bubbles are mixed in the current of rising, pass filter bed reaction zone (14) with some together because of the flco shape mud or the particulate state mud that have adhered to bubble or floated by the drag force of current, part mud is held back by biologic packing material layer (21), simultaneously not at the thorough organism of removing of Sludge Bed reaction zone (2), also be grown in the microbiological deterioration in the microbial film of filling surface, further removed; After passing the gas-liquid-solid three-phase mixed solution inflow gas disengaging zone (18) of filter bed reaction zone (14), because the oscilaltion effect of movable gas holder (25), the very fast evolving gas of gas disengaging zone (18) enters movable gas holder (25), give follow-up biogas utilization facility by biogas pipeline (22), remaining liquid-solid mixture descends automatically and returns bio-reaction zone by return flow line (15) or liquid-solid two-phase flow decline passway (19), forms cycling stream in this zone; The most of liquid-solid mixture of circle returns the sludge blanket that swims (13) from filter bed reaction zone (14) in device, the liquid-solid mixture that this zone is returned with the device cylindrical converges the back and forms cycling stream in partnership, because former water intermittently adds cycling stream, naturally a part comes in contact throwing out with the sludge blanket (13) that swims and is retained down, current then pass this zone through overflow weir and water sealed tank (17) discharger, and current do not circulate.
5. method of utilizing the described anaerobic treatment equipment for wastewater of claim 1 to realize propagating active granular mud bacterial classification under the normal temperature, it is characterized in that: the active bamboo carbon of placing particle diameter and be the 0.05-0.1 millimeter in acid-fermentation granule sludge layer (11) is as the one-level core carrier, the one-level core carrier mixes immersion through similar active sludge more than 2 hours after, when the device initial start-up, in acid-fermentation granule sludge layer (11), also drop into cationic polyacrylamide and alum, cationic polyacrylamide and alum fully cooperate, play the effect of absorption crane span structure, starter gear carries out normal wastewater treatment program, propagating active granular mud bacterial classification under the normal temperature, take out active particle mud bacterial classification, maximum particle diameter can reach 2.5 millimeters.
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| CN2006100498703A CN1821123B (en) | 2006-03-12 | 2006-03-12 | Device and method for anaerobic treating waste water and method of propagating active granular bacteria strain at normal termperature |
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| CN2006100498703A CN1821123B (en) | 2006-03-12 | 2006-03-12 | Device and method for anaerobic treating waste water and method of propagating active granular bacteria strain at normal termperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194494A (en) * | 2013-03-22 | 2013-07-10 | 哈尔滨工业大学 | Method for producing volatile fatty acids through co-fermentation of agaricus bisporus fungus chaff and surplus sludge |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583924A (en) * | 2011-12-08 | 2012-07-18 | 浙江工商大学 | Tubificidae sludge decrement enhanced biological denitrification device |
| CN104402114B (en) * | 2014-10-16 | 2016-01-20 | 长业环保集团有限公司 | Acidication waste disposal plant |
| CN108059236A (en) * | 2017-12-21 | 2018-05-22 | 深圳市海川实业股份有限公司 | A kind of composite anaerobic digestion reactor |
| CN111170428A (en) * | 2019-11-29 | 2020-05-19 | 江苏京源环保股份有限公司 | High-turbidity wastewater purification method based on movable vehicle-mounted sewage treatment device |
| CN113622489B (en) * | 2021-08-11 | 2022-07-29 | 北京建筑大学 | Antifreezing clean type source separation toilet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174815A (en) * | 1997-04-26 | 1998-03-04 | 张振家 | High-effect anaerobic treatment device for waste water and method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174815A (en) * | 1997-04-26 | 1998-03-04 | 张振家 | High-effect anaerobic treatment device for waste water and method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194494A (en) * | 2013-03-22 | 2013-07-10 | 哈尔滨工业大学 | Method for producing volatile fatty acids through co-fermentation of agaricus bisporus fungus chaff and surplus sludge |
| CN103194494B (en) * | 2013-03-22 | 2014-07-30 | 哈尔滨工业大学 | Method for producing volatile fatty acids through co-fermentation of agaricus bisporus fungus chaff and surplus sludge |
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