CN101746924A - Tubificidae ecosystem reactor and process - Google Patents
Tubificidae ecosystem reactor and process Download PDFInfo
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- CN101746924A CN101746924A CN200910154579A CN200910154579A CN101746924A CN 101746924 A CN101746924 A CN 101746924A CN 200910154579 A CN200910154579 A CN 200910154579A CN 200910154579 A CN200910154579 A CN 200910154579A CN 101746924 A CN101746924 A CN 101746924A
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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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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to a tubificidae ecosystem reactor and a process. The tubificidae ecosystem reactor divides and refines the traditional aeration biochemical pond of a town sewage treatment plant and comprises a biological composite reaction area, a microbe reaction area and an inorganic sludge separation area, tubificidaes are vaccinated and acclimatized in a special area-biological composite reaction area of a water feeding section of a flow impelling type aeration biochemical pond and digests activated sludge and organic pollutants absorbed by the activated sludge; microbes absorb and degrade the organic pollutants contained in sewage and metabolite excretions of the tubificidae and further stabilize and degrade the organic pollutants contained in the sewage and the metabolite excretions in the microbe reaction area, and strategies, such as tubificidae population control, tubificidae digestion speed regulation and control, termly inorganic sludge separation, intensified denitrification, and the like, are adopted so as to finally meet the sewage outflow and discharge requirements of the town sewage treatment plant. The invention economically, efficiently and maximally reduces the organic pollutants and organic surplus sludge contained in the sewage in the town sewage treatment process by utilizing the composite biochemical action of the tubificidaes and the microbes.
Description
Technical field
The present invention relates to field of environment protection, particularly relate to the mud decrement in town sewage biochemical treatment process.
Background technology
Urban wastewater treatment firm adopts Wastewater Treated by Activated Sludge Process sewage can produce a large amount of excess sludges, and along with wastewater treatment rate and emission standard improve day by day, sludge yield grows with each passing day.Sludge treatment and cost of disposal are very high, account for the 40%-65% of urban wastewater treatment firm total expenses.
From early stage sanitary landfill to burning, treatment and disposal method such as compost, heat drying, cut both ways, but no matter adopt which kind of method, all be that mud is carried out end treatment, mud process Decrement Technique reduces sludge yield, the sludge disposal mode is transferred to " source control " from existing " end treatment ", for the treatment and disposal problem that solves mud plays huge pushing effect.
Owing to can control mud from the source and produce, and energy consumption is low, economic operating cost, non-secondary pollution based on the mud process Decrement Technique of microfauna microorganism predation, thereby receives much concern.The correlative study report is all arranged both at home and abroad, but still locate the laboratory study mechanism stage, laboratory study shows and utilizes microfauna decrement mud also to exist: the microfauna number change is big, wayward, the ammonia nitrogen rising influences problems such as effluent quality, and the Technology that is applied to production practice awaits further research and development.
Summary of the invention
A kind of Tubificidae ecosystem reactor of the present invention and technology are carried out zoning to urban wastewater treatment firm tradition aeration biochemical pond function, refinement, be divided into: biological complex reaction district, the microbial reaction district, inorganic mud disengaging zone, at inlet segment specific region, pulling flow type aeration biochemical pond inoculation domestication Limnodrilus hoffmeisteri, utilize Limnodrilus hoffmeisteri, the effect of microorganism composite bio-chemical, decrement mud in the town sewage treating processes, the sludge disposal mode is transferred to " source control " from " end treatment " of routine, ensureing under the town sewage stably reaching standard processing prerequisite economy, efficiently, organic pollutant and organic excess sludge in the maximization reduced sewage.
Limnodrilus hoffmeisteri is subordinate to the Annelita Oligochaeta, is the many cells metazoans, through cytodifferentiation, has formed various tissues, organ and system, and each member's coordination in the system makes every vital movement become in order efficient more; The 26S Proteasome Structure and Function of organism is complicated, has formed a series of perfect regulatory mechanisms, can better conform; The interior environment of biont is relatively stable, and environmental change tolerance to external world strengthens; Individual life span also prolongs than unicellular organism.Its digestion method changes extracellular digestion into from the intracellular digestion of unicellular microorganisms such as bacterium, by the gastral wriggling chemical action of physical action and a large amount of digestive ferments of excretory such as mill, makes the decomposition of food more thorough, more efficient.
Tubificidae ecosystem reactor 12, comprise: water-in 1, biological complex reaction district 2, microbial reaction district 3, inorganic mud disengaging zone 4, effluent weir 5 and water outlet 6, Tubificidae ecosystem reactor is a plug-flow aeration tank, there is deflected current wall the centre, water-in 1 is arranged on the bottom of Tubificidae ecosystem reactor, water outlet is arranged on the top of Tubificidae ecosystem reactor, biological complex reaction district 2 is positioned at the leading portion of Tubificidae ecosystem reactor 12, bio-carrier 8 and aeration agitation double-duty plant 7 are housed in it, inoculation is through the Limnodrilus hoffmeisteri of domestication on the bio-carrier, microbial reaction district 3 is positioned at the back segment in biological complex reaction district 2, aerator 9 is housed in the microbial reaction district 3, and inorganic mud disengaging zone 4 is positioned at microbial reaction district 3, near effluent weir 5, shore pipe 11 is laid in the bottom, and effluent weir 5 belows are provided with mixed-liquor return mouth 10.Biological complex reaction district volume accounts for Tubificidae ecosystem reactor volume 30-50%, bio-carrier is installed in following 20 centimetres of Tubificidae ecosystem reactor liquid level, at the bottom of the pond between 1 meter in the zone, Limnodrilus hoffmeisteri mainly adopts Huo Fu water silk earthworm and fairy maiden worm, account for more than 90% of Limnodrilus hoffmeisteri total quantity, every cubic metre of bio-carrier Limnodrilus hoffmeisteri live body inoculation adhesion amount 20-28 kilogram.Biological complex reaction district adopts the aeration agitation double-duty plant, but microbial reaction district, inorganic mud disengaging zone adopt the independent control aerator.Microbial reaction district volume accounts for Tubificidae ecosystem reactor volume 50-70%.
Simulated aquatic ecosystem system of the present invention, the district installs bio-carrier additional in the biological complex reaction of Tubificidae ecosystem reactor inlet segment, the aeration agitation double-duty plant is installed is guaranteed oxygenation, muddy water mixes, the biological nature of combination water earthworm, build a stable ecotope to Limnodrilus hoffmeisteri, in this zone, the organic pollutant of Limnodrilus hoffmeisteri digestion active sludge and activated sludge absorption, organic pollutant and Limnodrilus hoffmeisteri metabolism thing in microorganism absorption and the degradation of sewage, (Limnodrilus hoffmeisteri material transformation efficiency is about 90% because the relative microorganism of Limnodrilus hoffmeisteri has higher energy expenditure and material conversion capability, microorganism only is 33.3%), Limnodrilus hoffmeisteri digestion and microbiological degradation synergy, can improve the removal efficient of aerobic biochemical leading portion organic pollutant greatly, accelerate energy expenditure and material cycle in the Sewage treatment systems, at utmost degradable organic pollutant reduces sludge yield (＜0.1kgSS/kgBOD
5).
Limnodrilus hoffmeisteri has directly digested organic pollutant in a part of water inlet at the Tubificidae ecosystem reactor leading portion, substituted the effect of organic pollutant in a part of conventional aerobic biochemical microbiological deterioration water, Limnodrilus hoffmeisteri has respiratory system as a kind of hydrocoles, microbial cell is breathed relatively, rate of oxidation improves greatly, oxygen transfer efficiency, transfer rate also improve greatly, subdue that organic pollutant can not increase oxygen requirement in the sewage of isodose, correspondingly also need not to increase energy consumption.
Limnodrilus hoffmeisteri belongs to aquatic zoobenthos, according to its habit, avoid direct irradiation of sunlight, facts have proved that bio-carrier is installed in the following 20 centimetres of growth and breedings that help Limnodrilus hoffmeisteri of Tubificidae ecosystem reactor liquid level; Bottom aeration zone current disturbance is big, is unfavorable for the Limnodrilus hoffmeisteri growth and breeding, reserves space more than 1 meter at the bottom of the pond, is more conducive to guarantee the plug-flow aeration tank fluidised form, guarantees that muddy water mixes, and avoids the heavy mud in bottom.
By to the biological complex reaction of Tubificidae ecosystem reactor district The Control of Dissolved Oxygen, can effectively regulate and control the vital movement and the digestion ability of Limnodrilus hoffmeisteri, Limnodrilus hoffmeisteri is a kind of biology of hypoxia tolerance, when dissolved oxygen is low to moderate 1 mg/litre, can survive, but mobility reduces, the also corresponding reduction of digestion ability, dissolved oxygen is the most active when 5 mg/litre, digestion ability is the strongest, Limnodrilus hoffmeisteri sludge digestion rate can reach 0.68 gram/gram/sky, by the interval regulation and control of aerated mixing plant dissolved oxygen 1 mg/litre to 5 mg/litre, can effectively control Limnodrilus hoffmeisteri digested sludge speed.
Biological complex reaction district's Limnodrilus hoffmeisteri digested sludge speed also is subjected to the influence of Limnodrilus hoffmeisteri population quantity, Limnodrilus hoffmeisteri proliferative speed; The Limnodrilus hoffmeisteri adult is the attached type growth, and through practical proof, every cubic metre of suitable inoculum size of bio-carrier Limnodrilus hoffmeisteri live body is the 20-28 kilogram; Limnodrilus hoffmeisteri metabolism life cycle is generally about 80-120 days, the Limnodrilus hoffmeisteri modes of reproduction is oviparity, hatching, the young earthworm of earthworm ovum and hatching moves with current, the regulation and control second pond return current ratio of the mixed liquid when that refluxes, the young earthworm of may command Limnodrilus hoffmeisteri earthworm ovum and hatching is at Tubificidae ecosystem reactor--(second pond, detest anoxic pond) residence time outside the aerobic zone, regulate and control young earthworm surviving rate, thus control Limnodrilus hoffmeisteri proliferative speed.
The microbial reaction district that adopts activated sludge process is set at the Tubificidae ecosystem reactor back segment, the aerator oxygenation is housed, in the microbial reaction district, microorganism is further stable, organic pollutant and Limnodrilus hoffmeisteri metabolism thing in the degradation of sewage, finally satisfies urban wastewater treatment firm water outlet emission request.Biological complex reaction district organic pollutant removal efficient improves, and has reduced microbial reaction district organic loading, and sludge concentration is controlled at the 2000-3000 mg/litre, dissolved oxygen is controlled at the 2-4 mg/litre, just can satisfy the sewage treatment process requirement.
Tubificidae ecosystem reactor is a plug-flow aeration tank, sewage flow through successively biological complex reaction district, microbial reaction district, rate of oxidation, the removal efficient of aerobic biochemical leading portion organic pollutant can be effectively improved in biological complex reaction district, the ammonia nitrogen that biological complex reaction district's Limnodrilus hoffmeisteri activity causes raises, the district is further nitrated at aerobic biochemical back segment microbial reaction, and adopt internal reflux strategy strengthened denitrification, ensure that the water outlet ammonia nitrogen is up to standard.The deflected current wall setting can be optimized the waterpower flow process, avoid the waterpower short circuit, guarantee each functional zone sufficient reacting, according to factors such as pond appearance, long-width ratio, aerator service range, building economies, one or more deflected current walls preferably are set in Tubificidae ecosystem reactor, and can reduce civil engineering cost.
Near effluent weir inorganic mud disengaging zone is set in the microbial reaction district, lays shore pipe at the bottom of the pond; Do not need to discharge excess sludge owing to second pond is daily, inorganic mud can be accumulated in Sewage treatment systems, and the regular separation energy of inorganic mud is improved mud structure and activity, ensures the steady running of sewage biochemical treatment system; Tubificidae ecosystem reactor is after operation for some time, continuous accumulation along with inorganics, the mud flco is active to descend, can close down inorganic mud disengaging zone aerator, utilize the heavy speed difference and the current difference of inorganic mud and active sludge, heavy inorganic mud is fast at the pond bottom sediments, by being laid on the shore pipe discharging (inorganic content can reach more than 70%) at the bottom of the pond.
In effluent weir bottom, microbial reaction district the mixed-liquor return mouth is set, because the Limnodrilus hoffmeisteri activity of biological complex reaction district, the raising of organic substance transformation efficiency can cause the ammonia nitrogen in the water and raise, microbial reaction district nitrification liquid is back to prepositionly to be detested or anoxic pond is carried out denitrification, the energy strengthened denitrification, thereby guarantee to satisfy the emission standard that town sewage plant improves day by day, monitoring microbial reaction district nitric nitrogen is determined reflux ratio then during actual motion, between general town sewage reflux ratio regulatory region at 30-100%.
Biological complex reaction district and trivial stroke of ratio of microbial reaction, according to Tubificidae ecosystem reactor organic loading under the different water inlet conditions of town sewage, microorganism metabolism organic sludge productive rate, and different population Limnodrilus hoffmeisteri digested sludge speed is determined, according to the town sewage plant design specifications, influent quality, we are through a large amount of laboratory studyes and industrial experimentation, biological complex reaction district volume accounts for Tubificidae ecosystem reactor volume 30-50%, microbial reaction district volume accounts for Tubificidae ecosystem reactor volume 50-70%, the zoning ratio can satisfy town sewage and handle the technical requirements of mud process decrement process in this interval, biological complex reaction district volume is lower than 30%, microbial reaction district volume is higher than 70%, can cause the mud decrement deficiency, the Sewage treatment systems mud production rate increases, greater than 0.1kgSS/kgBOD
5, increase follow-up sludge treatment cost; Biological complex reaction district volume is higher than 50%, microbial reaction district volume is lower than 50%, can cause mud decrement excessive, and microbial reaction district sludge concentration is low excessively, can not guarantee effluent quality.
Use the concrete grammar that Tubificidae ecosystem reactor carries out sewage purification, mud process decrement, its system comprises anaerobic pond or anoxic pond, second pond and Tubificidae ecosystem reactor, anaerobic pond or anoxic pond are arranged on the ecologic reactor front end, second pond is arranged on the ecologic reactor rear end, the mixed-liquor return mouth of ecologic reactor links to each other with anaerobic pond or anoxic pond, water outlet links to each other with second pond, and the second pond bottom is provided with the mud refluxing opening, and the mud refluxing opening links to each other with anaerobic pond or anoxic pond front end.Sewage enters biological complex reaction district from water-in, the organic pollutant of active sludge and activated sludge absorption in the Limnodrilus hoffmeisteri digestion reaction district in the biological complex reaction district, organic pollutant in activated sludge absorption and the degradation of sewage and Limnodrilus hoffmeisteri metabolism thing, sewage is handled laggard bio-reaction zone in a subtle way through biological complex reaction district, organic pollutant and Limnodrilus hoffmeisteri metabolism thing in the further degradation of sewage of the microorganism in the microbial reaction district.
The daily excess sludge that do not discharge of second pond, second pond mud all is back to anaerobic pond or anoxic pond, reflux ratio 50-100%, bottom, the inorganic mud of Tubificidae ecosystem reactor disengaging zone shore pipe is the inorganic mud of discharging regularly, the inorganic content of inorganic mud is about about 70%, and the time of regularly discharging inorganic mud is about 3-6 month.The terminal mixed-liquor return of reactor is to anaerobic pond or anoxic pond, reflux ratio 30-100%;
Description of drawings:
Fig. 1 Tubificidae ecosystem reactor vertical view
Mark is described as follows among the figure:
4 inorganic mud disengaging zone, 3 microbial reaction districts, 1 water-in, 2 biological complex reaction districts, 5 effluent weirs, 6 water outlets, 7 aeration agitation double-duty plants, 8 bio-carriers, 9 aerators, 10 mixed-liquor return mouths, 11 shore pipes, 12 Tubificidae ecosystem reactors
A kind of Tubificidae ecosystem reactor Sewage treatment systems of Fig. 2 process flow sheet
Fig. 3 embodiment 1 figure
Mark is described as follows among the figure:
Dual-purpose machine 8 second ponds of aeration agitation under aerator 6 fillers 7 liquid under 1 anaerobic pond, 2 mixed-liquor return mouths, 3 anoxic pond, 4 shore pipes, 5 liquid
Fig. 4 embodiment 2 figure
Mark is described as follows among the figure:
Specific embodiment 1
Certain urban wastewater treatment firm, AAO technology, day 26000 tons of sewage of processing.
Water inlet COD300, BOD
5120, NH
3-N22, SS160
Water outlet COD50, BOD
518, NH
3-N6, SS12
The aeration biochemical pond is transformed into Tubificidae ecosystem reactor, (account for total pond and hold 33.3%) in leading portion 1/3rd zones, aeration biochemical pond, following 20 centimetres of water level, bio-carriers are installed in 1.2 meters zones at the bottom of the pond, inoculation fairy maiden worm, Limnodrilus hoffmeisteri is inoculated regional aerating system and is transformed into the aeration agitation double-duty plant; The terminal shore pipe of installing in aeration tank, aerating system can independently be closed down, and mixed-liquor return is to anoxic pond, reflux ratio 50%, second pond mud is back to anaerobic pond, and reflux ratio is 80%.The biological complex reaction of Tubificidae ecosystem reactor district dissolved oxygen is controlled at 5 mg/litre, and microbial reaction district dissolved oxygen is controlled at the 2-3 mg/litre; The Tubificidae ecosystem reactor sludge concentration is controlled at 2000 mg/litre.
After the transformation, water outlet reaches country-level B emission standard, water outlet COD40, BOD
515, NH
3-N4, SS12.
1 year spoil disposal secondary of Sewage treatment systems, discharging in 6 months once discharge by the terminal shore pipe in aeration biochemical pond, each 100 tons of spoil disposals (water ratio 80%), 200 tons of year dischargings.
After the transformation, saved medicament, the energy consumption of desliming system, mud decrement 92.8% has been saved the follow-up disposal costs of mud.
Certain urban wastewater treatment firm, oxidation ditch process, 20000 tons of day processing
Water inlet COD350, BOD
5160, NH
3-N22, SS160
Water outlet COD50, BOD
518, NH
3-N3, SS16
The aeration biochemical pond is transformed into the Tubificidae ecosystem reactor embodiment: at water-in oxidation ditch is cut off, one end water inlet one brings out water, be transformed into plug-flow aeration tank, (account for total pond and hold 50%) in leading portion half territory, aeration biochemical pond, following 50 centimetres of water level, bio-carriers are installed in 1.2 meters zones at the bottom of the pond, inoculation Huo Fu water silk earthworm, and Limnodrilus hoffmeisteri is inoculated regional aerating system and is transformed into the aeration agitation double-duty plant; The terminal shore pipe of installing in aeration tank, aerating system can independently be closed down, and the terminal mixed-liquor return of oxidation ditch is to preposition anaerobic pond, reflux ratio 100%, the second pond mud preposition anaerobic pond that refluxes, reflux ratio is 60%.The biological complex reaction of Tubificidae ecosystem reactor district dissolved oxygen is controlled at 4 mg/litre, and microbial reaction district dissolved oxygen is controlled at the 2-4 mg/litre; The Tubificidae ecosystem reactor sludge concentration is controlled at 2500 mg/litre.
After the transformation, water outlet reaches one-level B emission standard, water outlet COD40, BOD
516, NH
3-N3, SS16.
1 year spoil disposal of Sewage treatment systems three times, 4 months rows once, by the terminal shore pipe discharging in aeration biochemical pond, each 70 tons of spoil disposals (water ratio 80%), 210 tons of year dischargings.
After the transformation, increased the mixed-liquor return energy consumption, saved medicament, the energy consumption of desliming system, whole energy consumption maintains an equal level, but mud decrement 93% has been saved the follow-up disposal costs of mud.
Claims (10)
1. a Tubificidae ecosystem reactor (12), comprise: water-in (1), biological complex reaction district (2), microbial reaction district (3), inorganic mud disengaging zone (4), effluent weir (5) and water outlet (6), it is characterized in that: Tubificidae ecosystem reactor is a plug-flow aeration tank, water-in (1) is arranged on the bottom of Tubificidae ecosystem reactor, water outlet is arranged on the top of Tubificidae ecosystem reactor, biological complex reaction district (2) is positioned at the leading portion of Tubificidae ecosystem reactor (12), biological complex reaction district volume accounts for Tubificidae ecosystem reactor volume 30-50%, bio-carrier (8) and aeration agitation double-duty plant (7) are housed in it, inoculation is through the Limnodrilus hoffmeisteri of domestication on the bio-carrier, microbial reaction district (3) is positioned at the back segment in biological complex reaction district (2), microbial reaction district volume accounts for reactor volume 50-70%, aerator (9) is housed in the microbial reaction district (3), inorganic mud disengaging zone (4) is positioned at microbial reaction district (3), near effluent weir (5), shore pipe (11) is laid in bottom, inorganic mud disengaging zone (4), and effluent weir (5) below is provided with mixed-liquor return mouth (10).
2. ecologic reactor as claimed in claim 1 is characterized in that, described Tubificidae ecosystem reactor is a plug-flow aeration tank.
3. ecologic reactor as claimed in claim 1, it is characterized in that, described bio-carrier is installed in following 20 centimetres of Tubificidae ecosystem reactor liquid level, at the bottom of the pond between 1 meter in the zone, described Limnodrilus hoffmeisteri mainly adopts Huo Fu water silk earthworm and fairy maiden worm, accounts for more than 90% of Limnodrilus hoffmeisteri total quantity.
4. Tubificidae ecosystem reactor as claimed in claim 1 is characterized in that, described microbial reaction district volume accounts for reactor volume 50-70%.
5. Tubificidae ecosystem reactor as claimed in claim 1 is characterized in that, described biological complex reaction district adopts the aeration agitation double-duty plant, but microbial reaction district, inorganic mud disengaging zone adopt the independent control aerator.
6. Tubificidae ecosystem reactor Sewage treatment systems, it is characterized in that, comprise anaerobic pond or anoxic pond, second pond and as each described Tubificidae ecosystem reactor of claim 1-5, anaerobic pond or anoxic pond are arranged on the Tubificidae ecosystem reactor front end, second pond is arranged on the Tubificidae ecosystem reactor rear end, the mixed-liquor return mouth of Tubificidae ecosystem reactor links to each other with anaerobic pond or anoxic pond, water outlet links to each other with second pond, the second pond bottom is provided with the mud refluxing opening, and the mud refluxing opening links to each other with anaerobic pond or anoxic pond front end.
7. method of utilizing the described Tubificidae ecosystem reactor of claim 1 to carry out sewage purification, it is characterized in that, sewage enters biological complex reaction district from water-in, the organic pollutant of active sludge and activated sludge absorption in the Limnodrilus hoffmeisteri digestion reaction district in the biological complex reaction district, organic pollutant in microorganism absorption and the degradation of sewage and Limnodrilus hoffmeisteri metabolism thing, sewage is handled laggard bio-reaction zone in a subtle way through biological complex reaction district, organic pollutant and Limnodrilus hoffmeisteri metabolism thing in the further degradation of sewage of microorganism in the microbial reaction district, the system sludge productive rate is less than 0.1kgSS/kgBOD
5
8. method as claimed in claim 7, it is characterized in that, in the Tubificidae ecosystem reactor rear end second pond is set, at the Tubificidae ecosystem reactor front end anaerobic pond or anoxic pond are set, second pond mud all is back to anaerobic pond or anoxic pond, reflux ratio 50-100%, the daily excess sludge that do not discharge of second pond, bottom, the inorganic mud of Tubificidae ecosystem reactor disengaging zone shore pipe is the inorganic mud of discharging regularly, the inorganic content of described inorganic mud is about about 70%, and the time of the inorganic mud of described regular discharging is about 3-6 month.
9. method as claimed in claim 7 is characterized in that, the terminal mixed-liquor return of Limnodrilus hoffmeisteri reactor is to anaerobic pond or anoxic pond, reflux ratio 30-100%.
10. as each described method of claim 6-9, it is characterized in that the biological complex reaction of Tubificidae ecosystem reactor district dissolved oxygen is controlled at the 1-5 mg/litre, microbial reaction district dissolved oxygen is controlled at the 2-4 mg/litre; Limnodrilus hoffmeisteri reactor sludge concentration is controlled at the 2000-3000 mg/litre.
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| CN2009101545796A CN101746924B (en) | 2009-11-13 | 2009-11-13 | Tubificidae ecosystem reactor and process |
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|---|---|---|---|
| CN2009101545796A CN101746924B (en) | 2009-11-13 | 2009-11-13 | Tubificidae ecosystem reactor and process |
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| CN101746924A true CN101746924A (en) | 2010-06-23 |
| CN101746924B CN101746924B (en) | 2011-11-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107410120A (en) * | 2017-09-12 | 2017-12-01 | 江苏步龙生物科技有限公司 | A kind of water earthworm device for effectively separating |
| CN111675461A (en) * | 2020-06-04 | 2020-09-18 | 北京建筑大学 | Beehive type sludge in-situ reduction device and method |
-
2009
- 2009-11-13 CN CN2009101545796A patent/CN101746924B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107410120A (en) * | 2017-09-12 | 2017-12-01 | 江苏步龙生物科技有限公司 | A kind of water earthworm device for effectively separating |
| CN111675461A (en) * | 2020-06-04 | 2020-09-18 | 北京建筑大学 | Beehive type sludge in-situ reduction device and method |
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| Publication number | Publication date |
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| CN101746924B (en) | 2011-11-23 |
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Address after: 311800 Zhejiang province Zhuji city streets Tao Le Jia Tan Zhuji sewage treatment plant Patentee after: Zhuji city Hongyu Environment Development Co. Ltd. Address before: 311800 Zhejiang province Zhuji city streets Tao Le Jia Tan Zhuji sewage treatment plant Patentee before: Zhuyi Feida-Hongyu Environmental Development Co., Ltd. |
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Effective date of registration: 20160120 Address after: 311824 Zhejiang city of Zhuji Province in the town of Hongyu environmental protection equipment Co. Patentee after: Zhuji Hongyu Environmental Engineering Co., Ltd. Address before: 311800 Zhejiang province Zhuji city streets Tao Le Jia Tan Zhuji sewage treatment plant Patentee before: Zhuji city Hongyu Environment Development Co. Ltd. |
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