CN201264946Y - Complete autotrophic denitrification apparatus for digested sludge dewatered solution biological film - Google Patents
Complete autotrophic denitrification apparatus for digested sludge dewatered solution biological film Download PDFInfo
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- CN201264946Y CN201264946Y CNU2008201087483U CN200820108748U CN201264946Y CN 201264946 Y CN201264946 Y CN 201264946Y CN U2008201087483 U CNU2008201087483 U CN U2008201087483U CN 200820108748 U CN200820108748 U CN 200820108748U CN 201264946 Y CN201264946 Y CN 201264946Y
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Abstract
The utility model relates to a device for completely autotrophic nitrogen removal of biofilm from digestion sludge dewatering liquid, comprising a digestion sludge dewatering liquid pool, a pre-anoxic denitrifying tank, a biofilm short-cut nitrification tank, a sedimentation tank, a middle pool and a biofilm anaerobic ammonia oxidation tank. The utility model is applied to the biological nitrogen removal of high-ammonia nitrogen wastewater such as digestion sludge dewatering liquid, late landfill leachate, coking wastewater, monosodium glutamate wastewater, and the like. The utility model realizes the highly efficient biological nitrogen removal of the wastewater with high NH 4 <+>-N and low C / N ratio, substantially reduces the construction and operating cost of the nitrogen removal of the wastewater, reduces the alkalinity demand for nitrification, has stable running, simple operation, stronger anti-shock loading capability, strong adaptability to temperature fluctuation and toxic substances, and easily to restore after being inhibited.
Description
Technical field
The utility model belongs to high-concentration ammonia nitrogenous wastewater bio-denitrification technology field, specifically be a kind ofly at first to realize that by dynamically being controlled in the microbial film short distance nitration pond municipal wastewater treatment plant is rich in the reaction of ammonia nitrogen digested sludge dehydration liquid short distance nitration, then under the condition that need not the organic carbon source existence, in the biological membrane anaerobic ammonia oxidation pond, react (ANAMMOX by Anammox, Anaerobic Ammonia Oxidation) nitrogen in the removal digested sludge dehydration liquid is finished the device of whole process autotrophic biological denitrificaion, is applicable to digested sludge dehydration liquid, late period percolate, coking chemical waste water, the biological denitrificaion of high ammonia-nitrogen wastewaters such as gourmet powder waste water.
Background technology
The water of China pollutes constantly aggravation, because the nitrogen eutrophication phenomenon that excessive accumulation causes in natural water constantly breaks out, the situation of the shortage of water resources of China also is on the rise simultaneously, and water pollutes and the dual-pressure of shortage of water resources has restricted the China's economic social development.Thereby improve the municipal effluent nitric efficiency, be the key point of sewage disposal and regeneration.
In municipal effluent biochemical treatment process, propagation of organic while of microbiological deterioration self has produced a large amount of excess sludges, and these mud and primary sludge be anaerobic treatment in digester usually.During anaerobic digestion because the anaerobism ammonification of organonitrogen, the ammonia nitrogen NH that biosynthesizing consumes in the sink drainage
4 +-N major part is transferred in the digested sludge dehydration liquid, the NH of the dehydration of digested sludge as a result liquid
4 +-N makes digested sludge dehydration liquid become typical high NH up to 400-1000mg/L
4 +-N hangs down C/N waste water, contained NH
4 +-N accounts for the 10%-25% of municipal sewage plant's total nitrogen load.Existing biochemical processing process dewaters digested sludge, and liquid refluxes and former water is handled together, and the nitrogen load that this has increased sewage disposal greatly causes nitric efficiency to be difficult to improve.The metabolic characteristics of anaerobic sludge digestion and digested sludge dehydration liquid directly is back to the traditional technology of sink drainage, is that low one of many sewage works nitric efficiency is main but through commonly overlooked crux.For the digested sludge dehydration liquid of low C/N, the famine of organic carbon source is the barrier that its nitric efficiency can't improve, and adds the expense that organic carbon source can significantly increase sewage water denitrification.Therefore, need to propose the device of more efficiently denitrogenation.
Summary of the invention
The purpose of this utility model is in order to solve the problems of the technologies described above, to propose a kind of device of entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane, promptly at first realizing municipal wastewater treatment plant digested sludge dehydration liquid middle and high concentration NH
4 +The short distance nitration reaction of-N then realizes the Anammox reaction again, finally realizes the device of the digested sludge dehydration liquid autotrophic denitrification of economical and efficient.
The purpose of this utility model is achieved through the following technical solutions:
The device of entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane is characterized in that: be provided with digested sludge dehydration fluid pool, pre-anoxic denitrification pond, microbial film short distance nitration pond, settling tank, intermediate pool, biological membrane anaerobic ammonia oxidation pond;
Digested sludge dehydration fluid pool is an opening water tank, is provided with upflow tube and water shoot; Pre-anoxic denitrification pond is a cylindrical tubular body, and sample cock is set from bottom to top, is filled with cubes sponge filler in the pre-anoxic denitrification pond, and this sponge filler specification is 10 * 10 * 10mm, specific surface area 400m
2/ m
3, the dosing ratio of filler is about about 80%, is provided with triphase separator in upper end, pre-anoxic denitrification pond, is communicated with by air valve, collection and confinement of gases Guan Yuyi alkali lye bottle, and this alkali lye bottle top is provided with escape pipe, and escape pipe is connected with wet test meter; Described microbial film short distance nitration pond is an opening pond body, its inner chamber is divided into several lattice chambers, according to the water (flow) direction aperture that is crisscross arranged up and down is the flowing hole of 10mm, lattice are indoor fills cubes sponge filler according to 40%～50% of useful volume, and be provided with air pump, gas meter and aeration tube, be provided with boring aeration pipe in bottom, lattice chamber, the aeration tube that leads to each lattice chamber is provided with variable valve; Described settling tank is a column shape, is provided with thief hole from bottom to top, is provided with pipe core in the middle of the pond; Described intermediate pool is an opening casing, is provided with spillway, sewage draining exit;
Described biological membrane anaerobic ammonia oxidation pond, this pond is provided with cylinder bodily form water bath sleeve and round shape sponge bed of packings, the sponge bed of packings is located in the middle of the water bath sleeve, and its top is provided with triphase separator and top seal plate, and the top of this separator is communicated with alkali lye bottle, gas meter and vapor pipe; Described water bath sleeve top is provided with the perforation water absorption tube, and this water absorption tube is communicated with the perforation water distributor that is located at the bottom by the water-bath recycle pump, and water bath sleeve top also is provided with electric heater, temperature regulator, and the water bath sleeve bottom is provided with water drain valve; The anaerobic ammonium oxidation tank outside is provided with several sampling valves that are communicated with Sludge Bed;
Digested sludge dehydration fluid pool is connected by the water intaking valve of intake pump with bottom, pre-anoxic denitrification pond; Intermediate pool is connected with bottom, pre-anoxic denitrification pond by microbial film short distance nitration pond effluent recycling pump; Pre-anoxic denitrification pond water outlet is connected with bottom, pre-anoxic denitrification pond by return line, recycle pump, circulation valve; Pre-anoxic denitrification pond rising pipe is connected with the head end in microbial film short distance nitration pond; The pond water outlet of microbial film short distance nitration is connected with the pipe core of settling tank by its rising pipe; Settled sludge in the settling tank is connected by the head end of sludge reflux pump with microbial film short distance nitration pond; The settling tank supernatant liquor is connected with intermediate pool by rising pipe.Intermediate pool is communicated with bottom, biological membrane anaerobic ammonia oxidation pond by the intake pump in biological membrane anaerobic ammonia oxidation pond, top, biological membrane anaerobic ammonia oxidation pond supernatant liquor enters into bottom, biological membrane anaerobic ammonia oxidation pond by biological membrane anaerobic ammonia oxidation pond effluent recycling pump, and the biological membrane anaerobic ammonia oxidation pond is overflowed water and discharged by rising pipe.The know-why of the utility model operation:
Bio-denitrifying sewage is by nitrated with NH
4 +-N is converted into NO
3 --N, again by denitrification with NO
3 --N is converted into nitrogen and overflows from water.The denitrification stage is with NO
3 --N is an electron acceptor(EA), and organism is as electron donor, with NO
3 --N is converted into nitrogen and finishes biological denitrificaion.But for high NH
4 +The denitrogenation of-N digested sludge dehydration liquid, its C/N is than only about 1, because the organic carbon source wretched insufficiency causes the traditional biological nitric efficiency to reach about 10%.
In device of the present utility model, low C/N at first utilizes organic carbon source limited in the former water to carry out denitrification in pre-anoxic denitrification pond than the digested sludge dehydration liquid of high ammonia nitrogen, then in microbial film short distance nitration reactor, by dynamic control, keep free ammonia FA concentration suitable in the reactor, make it only suppress nitrous acid oxidation bacterium NOB, but do not suppress ammonia nitrogen oxidation bacterium AOB, thereby realize and keep high NO
2 -The short distance nitration of-N cumulative percentage, the while, nitrated need proceeded to the NH about 50%
4 +-N is oxidized, i.e. the water outlet NH of microbial film short distance nitration reactor
4 +-N and NO
2 -The concentration ratio of-N is about 1:1.The water outlet of microbial film short distance nitration reactor in anaerobic ammonium oxidation tank, under the condition that does not need organic carbon source, NH
4 +-N and NO
2 --N is converted into nitrogen by the Anammox reaction, finally finishes the whole process autotrophic biological denitrificaion.And after realizing the independent denitrogenation of digested sludge dehydration liquid, be back to the nitric efficiency that main flow area can improve Sewage Plant greatly again.
The Anammox reaction is the nineties later stage official confirmation ammonia nitrogen bio-oxidation pathways metabolism and a pattern that find, brand-new.For the digested sludge dehydration liquid of low C/N than high ammonia nitrogen, realize that the Anammox reaction is the optimal path of its denitrogenation, also be simultaneously the denitride technology that is fit to the most with its water quality characteristics.Anaerobic ammonia oxidizing bacteria can reach the effect of efficient denitrification by following peculiar mode under the situation that does not have organic carbon source to exist:
2NH
4 ++ 1.5O
2=NH
4 ++ NO
2 -+ H
2O+2H
+(short distance nitration reaction)
NH
4 ++ NO
2 -=N
2+ 2H
2O (ANAMMOX reaction)
The device of digested sludge dehydration liquid short distance nitration of the present utility model and Anammox combined denitrification compared with prior art has following advantage:
1) at first utilizes former water organic carbon source to carry out denitrification, reduced the restraining effect of organism, then finish the efficient denitrification of autotrophic organism of digested sludge dehydration liquid, realized high NH short distance nitration
4 +-N hangs down C/N ratio wastewater high-efficiency biological denitrification, can reduce the construction and the working cost of sewage water denitrification by a relatively large margin;
2) aerobicization water inlet NH only
4 +50% of-N, and only need be oxidized to NO
2 --N, and needn't be oxidized to NO
3 --N the stage has reduced the volume and the aeration expense of reactor greatly, has reduced nitrated basicity demand simultaneously;
3) total nitrogen of microbial film ANAMMOX reactor load can reach 2.0kgTN/m
3More than the d, and there is not the worry of sludge loss and sludge bulking, stable, simple to operate;
4) microbial film denitrification of autotrophic organism technology compares with activated sludge process, has stronger capacity of resisting impact load, and the adaptability to temperature fluctuation, toxicant is strong simultaneously, is suppressed the back and recovers easily.
Description of drawings
Fig. 1 is the apparatus structure synoptic diagram of entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane.
Embodiment
Below in conjunction with drawings and Examples the application's patent is further described: embodiment: as shown in Figure 1, the device of entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane is made up of digested sludge dehydration fluid pool, pre-anoxic denitrification pond, microbial film short distance nitration pond, settling tank, intermediate pool, biological membrane anaerobic ammonia oxidation pond.The useful volume of digested sludge dehydration fluid pool is 700L, the useful volume in pre-anoxic denitrification pond, microbial film short distance nitration pond and biological membrane anaerobic ammonia oxidation pond is respectively 8L, 32L, 8.5L, the useful volume of intermediate pool is 20L, and the useful volume of settling tank is 15L.Pre-anoxic denitrification pool size is Φ * H=8cm * 200cm, and microbial film short distance nitration pond is of a size of L * B * H=80cm * 10cm * 55cm, is equally divided into 9 lattice chambers, and the useful volume of each lattice chamber is 4L.The ANAMMOX pool size is Φ * H=40cm * 190cm, and middle sponge bed of packings is of a size of Φ * H=8cm * 200cm, and water-bath telescopic volume is 100L.
The digested sludge dehydration liquid that uses in the present embodiment is taken from the sludge disposal district of municipal sewage plant, Beijing, the NH of this digested sludge dehydration liquid
4 +-N mean concns is 400mg/L, COD/NH
4 +-N=0.8 is typical digested sludge dehydration liquid.
Concrete operating process is as follows:
1) the startup operation in pre-anoxic denitrification pond and microbial film short distance nitration pond: at first the sponge filler is dosed respectively in pre-anoxic denitrification pond and the microbial film short distance nitration pond, filling ratio is respectively 80% and 40% of useful volume.To be added to respectively from the active sludge that urban sewage plant aeration tank is obtained pre-anoxic denitrification pond and the microbial film short distance nitration pond, the sludge concentration MLSS that adds two ponds, back is respectively 2000mg/L and 4000mg/L; The full digested sludge dehydration of digested sludge dehydration liquid storage fluid pool with municipal wastewater treatment plant, then start intake pump, digested sludge dehydration liquid flow through successively pre-anoxic denitrification pond and microbial film short distance nitration pond, start microbial film short distance nitration pond effluent recycling pump and sludge reflux pump simultaneously, its quantity of reflux is respectively 50%～80% and 100%; The aerating system that starts microbial film short distance nitration pond carries out high ammonia nitrogen NH in the digested sludge dehydration liquid
4 +Dissolved oxygen DO=3.0～5.0mg/L is kept in the short distance nitration reaction of-N.Water inlet pH value should be kept into water NH simultaneously between 7.0～7.5
4 +-N ALR=0.4～the 1.0kgNH that loads
4 +-N/m
3D changes in above-mentioned scope by keeping pH value and ALR, makes the average free ammonia FA concentration in the microbial film short distance nitration pond〉7mg/L, NH simultaneously
4 +The nitrated rate of-N is greater than 50%; Move pre-anoxic denitrification pond and microbial film short distance nitration pond under these conditions, as pre-anoxic denitrification pond water outlet nitrous acid nitrogen NO
2 -During-N＜5mg/L, confirming that it starts finishes, and enters the smooth running stage.As microbial film short distance nitration pond water outlet NO
2 --N cumulative percentage is greater than 50%, and water outlet NH
4 +-N:NO
2 --N ratio is when the 1:1 left and right sides, and the microbial film short distance nitration is achieved and keeps;
2) startup in biological membrane anaerobic ammonia oxidation pond operation: with the active sludge in the oxidation ditch process of the excess sludge in microbial film short distance nitration pond and Treating Municipal Sewage, mass ratio according to 3:1 is added to the biological membrane anaerobic ammonia oxidation pond, postvaccinal sludge concentration MLSS=7kg MLSS/m
3The temperature of biological membrane anaerobic ammonia oxidation pond water bath sleeve is set and be controlled at 35 ℃, biological membrane anaerobic ammonia oxidation pond water inlet pH value maintains between 7.2～9.0, does not add HCl or NaOH adjusting when this scope, with microbial film short distance nitration pond water outlet NH
4 +-N and NO
2 --N concentration is diluted between 60～80mg/L with tap water, and the above-mentioned mixing water after the dilution is pumped into the biological membrane anaerobic ammonia oxidation pond according to the flow of 40L/d, opens biological membrane anaerobic ammonia oxidation pond effluent recycling pump simultaneously, and reflux ratio is 2:1; As biological membrane anaerobic ammonia oxidation pond water outlet NH
4 +-N and NO
2 --N concentration is all less than 10mg/L, and the Anammox reaction is achieved and keeps;
3) entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane system series operation: after pre-anoxic denitrification pond, microbial film short distance nitration pond and biological membrane anaerobic ammonia oxidation pond start operation respectively, this entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane system series operation; Digested sludge dehydration liquid in the digested sludge dehydration fluid pool enters into pre-anoxic denitrification pond, microbial film short distance nitration pond successively through intake pump, simultaneously the mud in the settling tank is back to microbial film short distance nitration pond head end by sludge reflux pump according to 50% reflux ratio, and the microbial film short distance nitration pond water outlet of intermediate pool is back to pre-anoxic denitrification pond according to 50%～80% backflow ratio; Mixed solution enters into settling tank and carries out mud-water separation in the microbial film short distance nitration pond, and supernatant liquor enters into intermediate pool; Microbial film short distance nitration pond water outlet in the intermediate pool contains NH
4 +-N and NO
2 --N, its concentration ratio should be controlled at about 1:1, for reaching the aforementioned proportion requirement, work as NH
4 +-N/NO
2 --N〉1.1 o'clock, the influent ammonia nitrogen load that suitably reduces microbial film short distance nitration pond reaches about 1:1 up to this ratio, and works as NH
4 +-N/NO
2 --N＜0.8 o'clock, the influent ammonia nitrogen load that suitably improves microbial film short distance nitration pond reaches about 1:1 up to this ratio; In temperature maintenance during at 35 ℃, NH
4 +-N/NO
2 -The nitrification liquid that-N ratio is about 1:1 enters into anaerobic ammonium oxidation tank through the anaerobic ammonium oxidation tank intake pump and finishes the Anammox reaction; When anaerobic ammonium oxidation tank total nitrogen load reaches 1.5kg TN/m
3More than the d, and NH in system's water outlet
4 +-N and NO
2 --N clearance is all greater than 80%, and system has finished the microbial film whole process autotrophic denitrification process of digested sludge dehydration liquid.
Long run test result shows:
Pre-anoxic denitrification pond and microbial film short distance nitration pond are moved under room temperature (15 ℃～30 ℃) condition, and the operating temperature of anaerobic ammonium oxidation tank is 35 ℃.The sludge concentration MLSS in microbial film short distance nitration pond is 3.0Kg/m
3, digested sludge dehydration liquid NH
4 +-N mean concns is 400mg/L, COD/NH
4 +Under the condition of-N=0.8,9 months test-results of steady running shows: microbial film short distance nitration pond NO
2 --N cumulative percentage is 65～95%, and the total nitrogen TN＜50mg/L of system's water outlet, TN clearance be greater than 85%, water outlet NH
4 +-N and NO
2 --N is all less than 13mg/L, and it is 1.5～3.0Kg TN/m that the total nitrogen in biological membrane anaerobic ammonia oxidation pond is removed load
3The gas chromatographic detection result of anaerobic ammonium oxidation tank biogas shows that the main component of biogas is N
2, N
2Content is 99%, and CH
4Wait other gas content to ignore, system has successfully realized complete autotrophic denitrification.
Claims (1)
1, a kind of device of entire journey autotrophy denitrification of digested sludge dewatered liquid biomembrane is characterized in that: be provided with digested sludge dehydration fluid pool (1), pre-anoxic denitrification pond (2), microbial film short distance nitration pond (3), settling tank (4), intermediate pool (5), biological membrane anaerobic ammonia oxidation pond (6);
Digested sludge dehydration fluid pool is an opening water tank, is provided with upflow tube (1.1) and water shoot (1.2); Pre-anoxic denitrification pond is a cylindrical tubular body, and sample cock (2.2) is set from bottom to top, is filled with cubes sponge filler (2.1) in the pre-anoxic denitrification pond, and this sponge filler specification is 10 * 10 * 10mm, specific surface area 400m
2/ m
3The dosing ratio of filler is about about 80%, be provided with triphase separator (2.3) in upper end, pre-anoxic denitrification pond, be communicated with an alkali lye bottle (2.8) by air valve (2.4), collection and confinement of gases pipe (2.5), this alkali lye bottle top is provided with escape pipe (2.6), and escape pipe is connected with wet test meter (2.7); Described microbial film short distance nitration pond is an opening pond body, its inner chamber is divided into several lattice chambers (3.8), according to the water (flow) direction aperture that is crisscross arranged up and down is the flowing hole of 10mm, lattice are indoor fills cubes sponge filler (3.2) according to 40%～50% of useful volume, and be provided with air pump (3.9), gas meter (3.1) and aeration tube (3.3), be provided with boring aeration pipe (3.5) in bottom, lattice chamber, the aeration tube that leads to each lattice chamber is provided with variable valve (3.4); Described settling tank is a column shape, is provided with thief hole (4.1) from bottom to top, is provided with pipe core (4.2) in the middle of the pond; Described intermediate pool is an opening casing, is provided with spillway (5.1), sewage draining exit (5.2);
Described biological membrane anaerobic ammonia oxidation pond (6), this pond is provided with cylinder bodily form water bath sleeve (6.11) and round shape sponge bed of packings (6.10), the sponge bed of packings is located in the middle of the water bath sleeve, its top is provided with triphase separator (6.7) and top seal plate (6.6), and the top of this separator is communicated with alkali lye bottle (6.2), gas meter (6.1) and vapor pipe; Described water bath sleeve top is provided with perforation water absorption tube (6.3), this water absorption tube is communicated with the perforation water distributor (6.15) that is located at the bottom by water-bath recycle pump (6.12), water bath sleeve top also is provided with electric heater (6.4), temperature regulator (6.5), and the water bath sleeve bottom is provided with water drain valve (6.14); The anaerobic ammonium oxidation tank outside is provided with several sampling valves (6.8) that are communicated with Sludge Bed;
Digested sludge dehydration fluid pool is connected by the water intaking valve (2.11) of intake pump (2.10) with bottom, pre-anoxic denitrification pond; Intermediate pool is connected with bottom, pre-anoxic denitrification pond by microbial film short distance nitration pond effluent recycling pump (3.7); Pre-anoxic denitrification pond water outlet is connected with bottom, pre-anoxic denitrification pond by return line (2.14), recycle pump (2.13), circulation valve (2.12); Pre-anoxic denitrification pond rising pipe (2.9) is connected with the head end in microbial film short distance nitration pond; The pond water outlet of microbial film short distance nitration is connected with the pipe core of settling tank by its rising pipe (3.10); Settled sludge in the settling tank is connected with the head end in microbial film short distance nitration pond by sludge reflux pump (3.6); The settling tank supernatant liquor is connected with intermediate pool by rising pipe (4.3).Intermediate pool is communicated with bottom, biological membrane anaerobic ammonia oxidation pond by the intake pump (6.17) in biological membrane anaerobic ammonia oxidation pond, top, biological membrane anaerobic ammonia oxidation pond supernatant liquor enters into bottom, biological membrane anaerobic ammonia oxidation pond by biological membrane anaerobic ammonia oxidation pond effluent recycling pump (6.16), and water is overflowed by rising pipe (6.18) discharging in the biological membrane anaerobic ammonia oxidation pond.
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|---|---|---|---|
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|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101746A (en) * | 2011-01-11 | 2011-06-22 | 彭永臻 | Low-carbon urban sewage biological phosphorus removal and autotrophic biological nitrogen removal device and method |
| CN102515429A (en) * | 2011-12-09 | 2012-06-27 | 北京工业大学 | Device and method for combined denitrification of anoxic-oxic (A/O) shortcut nitrification and anaerobic ammonia oxidation of late-stage landfill leachate |
| CN102515428A (en) * | 2011-12-09 | 2012-06-27 | 北京工业大学 | Combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and method thereof |
| CN103723829A (en) * | 2013-12-18 | 2014-04-16 | 哈尔滨工业大学 | Culture apparatus and method for complete autotrophic nitrogen removal granule sludge |
| CN103265118B (en) * | 2009-07-20 | 2014-04-23 | 生态洁环保科技股份有限公司 | Integrated biological treatment apparatus of domestic sewages used in residential areas |
| CN104556376A (en) * | 2014-11-29 | 2015-04-29 | 北京工业大学 | Autotrophic nitrogen removal method for biological phosphorus removal of urban sewage based on short-cut denitrification for providing nitrite |
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2008
- 2008-06-20 CN CNU2008201087483U patent/CN201264946Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103265118B (en) * | 2009-07-20 | 2014-04-23 | 生态洁环保科技股份有限公司 | Integrated biological treatment apparatus of domestic sewages used in residential areas |
| CN102101746A (en) * | 2011-01-11 | 2011-06-22 | 彭永臻 | Low-carbon urban sewage biological phosphorus removal and autotrophic biological nitrogen removal device and method |
| CN102101746B (en) * | 2011-01-11 | 2012-10-17 | 彭永臻 | Low-carbon urban sewage biological phosphorus removal and autotrophic biological nitrogen removal device and method |
| CN102515429A (en) * | 2011-12-09 | 2012-06-27 | 北京工业大学 | Device and method for combined denitrification of anoxic-oxic (A/O) shortcut nitrification and anaerobic ammonia oxidation of late-stage landfill leachate |
| CN102515428A (en) * | 2011-12-09 | 2012-06-27 | 北京工业大学 | Combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and method thereof |
| CN102515428B (en) * | 2011-12-09 | 2013-11-06 | 北京工业大学 | Combined device for synchronous denitrification and methanogenesis as well as autotrophic nitrogen removal of landfill leachate and method thereof |
| CN103723829A (en) * | 2013-12-18 | 2014-04-16 | 哈尔滨工业大学 | Culture apparatus and method for complete autotrophic nitrogen removal granule sludge |
| CN104556376A (en) * | 2014-11-29 | 2015-04-29 | 北京工业大学 | Autotrophic nitrogen removal method for biological phosphorus removal of urban sewage based on short-cut denitrification for providing nitrite |
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