CN109574218A - Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate apparatus and method - Google Patents
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate apparatus and method Download PDFInfo
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- CN109574218A CN109574218A CN201811576291.3A CN201811576291A CN109574218A CN 109574218 A CN109574218 A CN 109574218A CN 201811576291 A CN201811576291 A CN 201811576291A CN 109574218 A CN109574218 A CN 109574218A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Abstract
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate apparatus and method, belong to high-ammonia-nitrogen sewage sludge organism process field.Treatment of advanced stage landfill leachate initially enters short distance nitration reactor and influent ammonia nitrogen is completely converted into nitrite nitrogen；The water outlet of 92.6% short distance nitration enters fermentation coupling denitrification reactor together with excess sludge and realizes that denitrification and the synchronous of excess sludge digestion carry out；It, which is discharged, is then mixed into anaerobic ammonia oxidation reactor with the water outlet of remaining 7.4% short distance nitration, and the nitrite nitrogen that the ammonia nitrogen and short distance nitration for discharging fermentation process generate further is removed.The present invention is completed at the same time residual sludge reduction than the advanced nitrogen for the treatment of of advanced stage landfill leachate in the low C/N of realization.
Description
Technical field
The present invention relates to a kind of short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process to handle treatment of advanced stage landfill leachate skill
Art belongs to high-ammonia-nitrogen sewage sludge organism process field.
Background technique
In recent years, being continuously increased with municipal solid waste yield, landfill method are increasingly becoming most widely used in the world
General processing and method of disposal.Fill the percolate that generates because have complicated component, water quality and quantity change greatly, organic matter and ammonia nitrogen
The water quality characteristics such as high, the microbial nutrition element ratio imbalance of concentration, make it be treated as in international coverage still unsolved problem
One of.Traditional biological denitrification process is by NH4 +- N is converted into N03 -- N, then pass through denitrification for N03 -- N is converted into nitrogen from water
Evolution.The denitrification stage is with N03 -- N is electron acceptor, and mineralized nitrogen is that nitrogen completes biology as electron donor by organic matter
Denitrogenation.Organic carbon source there is a serious shortage of being barrier that mature leachate nitric efficiency can not improve, cause traditional biological denitrogenation to be imitated
Rate can only achieve 10% or so, and additional organic carbon source can significantly increase the expense of sewage water denitrification.
Excess sludge is that the by-product in biological wastewater treatment process contains large amount of organic, is generated after anaerobic fermentation
Volatile short chain fatty acids can be used as the high-quality carbon source of biological denitrification process.Exploitation excess sludge in carbon source and be subject to benefit
With two stubborn problems of sewage treatment plant's carbon source deficiency and residual sludge reduction can be solved simultaneously.However excess sludge is sent out
It is discharged during ferment along with a large amount of ammonia nitrogen, it will be significantly if sludge-digestion liquid is flowed back into sewage treatment plant without processing
Increase sewage treatment nitrogen load and operation energy consumption.It is, therefore, desirable to provide the device and method of more efficiently denitrogenation.
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process handles treatment of advanced stage landfill leachate, first high-concentration ammonia-nitrogen
Treatment of advanced stage landfill leachate realize that stable nitrite nitrogen accumulates by short distance nitration process, excess sludge is anti-in fermentation denitrification
It answers in device and is digested, electron donor of the organic carbon source of generation as denitrification process, the Asia that most of short distance nitration is generated
Nitrate-nitrogen reduction is nitrogen.The ammonia nitrogen of sludge digestion process release and the water outlet of remaining short distance nitration are acted on by Anammox
Further removed.It compares as a kind of no external carbon addition biological denitrification process with traditional biological denitrification process, not only saves
About 25% aeration quantity and 100% carbon source, while excess sludge reduction effect can be completed.
Summary of the invention
The invention proposes short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate sides
Method, specifically treatment of advanced stage landfill leachate initially enter short distance nitration reactor and influent ammonia nitrogen are completely converted into nitrite nitrogen；
The water outlet of 92.6% short distance nitration enters fermentation coupling denitrification reactor together with excess sludge and realizes denitrification and excess sludge
The synchronous of digestion carries out；It, which is discharged, is then mixed into anaerobic ammonia oxidation reactor with the water outlet of remaining 7.4% short distance nitration, makes
The nitrite nitrogen that the ammonia nitrogen and short distance nitration of fermentation process release generate further is removed.
The purpose of the present invention is achieved through the following technical solutions:
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate device, feature exist
In, including raw water water tank (1), short distance nitration reactor (2), the first intermediate water tank (3), excess sludge conservation tank (4), fermentation coupling
Close denitrification reactor (5), the second intermediate water tank (6), anaerobic ammonia oxidation reactor (7)；The raw water water tank is equipped with overflow pipe
And water outlet；The short distance nitration reactor (2) is equipped with air compressor (2.1), gas flowmeter (2.2), aeration sand head
(2.3), the first water inlet (2.5), the first sample tap (2.9), the first discharge outlet (2.10), the first blender (2.7), first into
Water peristaltic pump (2.4), pH/DO real-time monitoring device (2.8), ORP real-time monitoring device (2.6)；The fermentation coupling denitrification
Reactor (5) is equipped with the second water inlet (5.2), the first mud inlet (5.3), the second discharge outlet (5.6), the second water inlet peristaltic pump
(5.1), the second blender (5.4), pH real-time watch device (5.5)；The anaerobic ammonia oxidation reactor is equipped with blow-down pipe
(7.6), third water inlet (7.2), third water inlet peristaltic pump (7.1), the first refluxing opening (7.7), the first reflux peristaltic pump
(7.9), the second refluxing opening (7.10), three phase separator (7.4), exhaust outlet (7.5), airbag (7.3), third discharge outlet (7.6)；
Raw water water tank (1) passes through the first water inlet peristaltic pump (2.4) and the first water inlet of short distance nitration reactor (2.5) phase
Even；The first water outlet of short distance nitration reactor (2.10) respectively with the first intermediate water tank water inlet (3.1) and the second intermediate water tank
Water inlet (6.2) is connected, and air is by air compressor (2.1), gas flowmeter (2.2) eventually by aeration sand head (2.3)
Squeeze into short distance nitration reactor (2)；First intermediate water tank water outlet (3.3) passes through the second water inlet peristaltic pump (5.1) and fermentation coupling
The second water inlet of denitrification reactor (5.2) are closed to be connected；Sludge conservation tank (4) and fermentation the first mud inlet of coupling denitrification
(5.3) it is connected；Fermentation the second discharge outlet of coupling denitrification reactor (5.6) is connected with the second intermediate water tank (6)；Second intermediate water
Case water outlet (6.4) is connected by third water inlet peristaltic pump (7.1) with anaerobic ammonia oxidation reactor third water inlet (7.2)；Detest
The first refluxing opening of anaerobic ammonium oxidation reactor (7.7) is connected by the first reflux peristaltic pump (7.9) with the second refluxing opening (7.10).
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process, which is carried out, using described device handles treatment of advanced stage landfill leachate
Method, which is characterized in that including following procedure:
1) short distance nitration sludge, fermentation coupling denitrification sludge, anaerobic ammonium oxidation sludge are added to short distance nitration respectively
In reactor, fermentation coupling denitrification reactor and anaerobic ammonia oxidation reactor, it is dirty that control adds rear each reactor mixed liquor
Mud concentration is respectively 4125-5079mg/L, 8797-16522mg/L and 5633-6210mg/L.
2) treatment of advanced stage landfill leachate in raw water water tank is pumped into short distance nitration reactor, opens the first blender and sky
Air compressor controls short distance nitration reactor dissolved oxygen concentration 0.2-0.5mg/L, needs to consume basicity during short distance nitration,
When pH is preferably minimized i.e. " ammonia valley point " after reaction, aeration time is by pH/DO real-time monitoring device strict control, when pH song
Line occurs stopping aeration when " ammonia valley point ", closes the first blender and air compressor, will be discharged after precipitating 30min according to 25:2
Volume ratio is discharged into the first and second intermediate water tanks respectively.
3) it is anti-to be pumped into the coupling denitrification that ferments by the second water inlet peristaltic pump of opening for the first intermediate water tank Central Asia nitrate wastewater
Device is answered, while sludge in storage mud tank being added to fermentation coupling denitrification reactor, denitrification process is a generation basicity
Process, as the carry out pH of reaction constantly rises, inflection point i.e. " nitrite elbow " will occur in pH curve after denitrification, beat
The second blender is opened, the anoxia stirring time passes through pH/DO real-time monitoring device strict control by aeration time, when pH curve goes out
Stop stirring when existing " nitrite elbow ", the second blender of closing, supernatant is discharged into the second intermediate water tank after precipitating 90min.
4) it opens third water inlet peristaltic pump nitrite nitrogen/ammonia nitrogen that concentration ratio in the second intermediate water tank is 1-1.32 gives up
Water is pumped into anaerobic ammonia oxidation reactor, and control third water inlet wriggling flow rate pump is 0.15L/h, anaerobic ammonia oxidation reactor waste water by
First refluxing opening is pumped into the second refluxing opening by the first reflux peristaltic pump, and control the first reflux wriggling flow rate pump is 0.45L/h.
Technical principle
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate apparatus and method, it is first
Treatment of advanced stage landfill leachate is first pumped into short distance nitration reactor, influent ammonia nitrogen is completely converted into nitrite nitrogen.Short distance nitration reaction
92.6% water outlet enters the first intermediate water tank in device, and remaining 7.4% water outlet enters the second intermediate water tank.First intermediate water tank
Middle nitrite nitrogen waste water enters fermentation coupling denitrification reactor together with excess sludge and realizes that denitrification and excess sludge digest
Synchronous carry out.It can be discharged along with ammonia nitrogen in sludge digestion process, in order to realize advanced nitrogen, fermentation coupling denitrification reaction
The water outlet of device and the second intermediate water tank nitrite nitrogen waste water are mixed into anaerobic ammonia oxidation reactor, are acted on by Anammox
The nitrite nitrogen that the ammonia nitrogen and short distance nitration for discharging fermentation process generate further is removed.The present invention is realizing low C/N
Advanced nitrogen than treatment of advanced stage landfill leachate is completed at the same time residual sludge reduction.
Short distance nitration-fermentation/denitrification of the present invention-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate dress
It sets and is had the advantage that with method
1) by the way that excess sludge is fermented, the combination of denitrification and Anammox, realize truly
The advanced nitrogen for the treatment of of advanced stage landfill leachate achievees the purpose that saving carbon source adds and processing cost.
2) short distance nitration that the present invention uses is acted on using inorganic carbon as carbon source, and mineralized nitrogen is nitrous state by ammonia oxidation bacteria
Nitrogen has saved 25% aeration quantity compared with traditional complete nitrification, and in the metabolic process without N2O is generated, therefore this technique greenhouse
Gas discharge is few.
3) influent ammonia nitrogen is completely converted by nitrite nitrogen, Real-Time Control Strategy by pH curve real-time control aeration time
Nitrification can be not only strict controlled in the short distance nitration stage, but also avoid the growth of NOB caused by overexposure gas and the energy
Waste.
4) reaction time of short distance nitration and fermentation coupling denitrification is all made of pH curve real-time control, when water inlet advanced stage rubbish
The fluctuation of rubbish leachate quality still can realize the efficient removal of system nitrogen with the stable operation of system.
5) organic carbon source that excess sludge fermentation process generates can generate short distance nitration process as electron donor
Nitrite nitrogen is reduced to nitrogen.While saving 100% carbon source, the digestion of excess sludge is completed.
6) ammonia nitrogen of excess sludge fermentation process release is acted on by Anammox is further removed, and is realized late
The advanced nitrogen of phase landfill leachate is handled.
Detailed description of the invention
Fig. 1 is the device of the invention figure.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate dress
It sets, which is characterized in that including raw water water tank (1), short distance nitration reactor (2), the first intermediate water tank (3), excess sludge deposit
Tank (4), fermentation coupling denitrification reactor (5), the second intermediate water tank (6), anaerobic ammonia oxidation reactor (7)；
The raw water water tank is equipped with overflow pipe and water outlet；The short distance nitration reactor (2) is equipped with air compressor
(2.1), gas flowmeter (2.2), aeration sand head (2.3), the first water inlet (2.5), the first sample tap (2.9), the first draining
Mouth (2.10), the first blender (2.7), the first water inlet peristaltic pump (2.4), pH/DO real-time monitoring device (2.8), ORP are supervised in real time
It surveys device (2.6)；The fermentation coupling denitrification reactor (5) is equipped with the second water inlet (5.2), the first mud inlet (5.3), the
Two discharge outlet (5.6), the second water inlet peristaltic pump (5.1), the second blender (5.4), pH real-time watch device (5.5)；It is described to detest
Anaerobic ammonium oxidation reactor is equipped with blow-down pipe (7.6), third water inlet (7.2), third water inlet peristaltic pump (7.1), the first refluxing opening
(7.7), the first reflux peristaltic pump (7.9), the second refluxing opening (7.10), three phase separator (7.4), exhaust outlet (7.5), airbag
(7.3), third discharge outlet (7.6)；
Raw water water tank (1) passes through the first water inlet peristaltic pump (2.4) and the first water inlet of short distance nitration reactor (2.5) phase
Even；The first water outlet of short distance nitration reactor (2.10) respectively with the first intermediate water tank water inlet (3.1) and the second intermediate water tank
Water inlet (6.2) is connected, and air is by air compressor (2.1), gas flowmeter (2.2) eventually by aeration sand head (2.3)
Squeeze into short distance nitration reactor (2)；First intermediate water tank water outlet (3.3) passes through the second water inlet peristaltic pump (5.1) and fermentation coupling
The second water inlet of denitrification reactor (5.2) are closed to be connected；Sludge conservation tank (4) and fermentation the first mud inlet of coupling denitrification
(5.3) it is connected；Fermentation the second discharge outlet of coupling denitrification reactor (5.6) is connected with the second intermediate water tank (6)；Second intermediate water
Case water outlet (6.4) is connected by third water inlet peristaltic pump (7.1) with anaerobic ammonia oxidation reactor third water inlet (7.2)；Detest
The first refluxing opening of anaerobic ammonium oxidation reactor (7.7) is connected by the first reflux peristaltic pump (7.9) with the second refluxing opening (7.10).
Specific test water is practical treatment of advanced stage landfill leachate in the present embodiment, the ammonia nitrogen concentration that is averaged for 1736 ±
40mg/L, COD mean concentration are 2109 ± 200mg/L, and average basicity is 4000 ± 1000mg/L (with CaCO3Meter).It tests short
Journey nitrator uses batch-type SBR, dischargeable capacity 10L, drains ratio 50%；Fermentation coupling denitrification reactor, which uses, to be had
Effect volume is 6L batch-type SBR, sludge volume dosing ratio 16.7-41.7%；Anaerobic ammonia oxidation reactor uses up-flow anaerobism
Sludge bed reactor (UASB) dischargeable capacity is 2L；
Specific operation process is as follows:
1) short distance nitration sludge, fermentation coupling denitrification sludge, anaerobic ammonium oxidation sludge are added to short distance nitration respectively
In reactor, fermentation coupling denitrification reactor and anaerobic ammonia oxidation reactor, it is dirty that control adds rear each reactor mixed liquor
Mud concentration is respectively 4125-5079mg/L, 8797-16522mg/L and 5633-6210mg/L.
2) treatment of advanced stage landfill leachate in raw water water tank is pumped into short distance nitration reactor, opens the first blender and sky
Air compressor controls short distance nitration reactor dissolved oxygen concentration 0.2-0.5mg/L, needs to consume basicity during short distance nitration,
When pH is preferably minimized i.e. " ammonia valley point " after reaction, aeration time is by pH/DO real-time monitoring device strict control, when pH song
Line occurs stopping aeration when " ammonia valley point ", closes the first blender and air compressor, will be discharged after precipitating 30min according to 25:2
Volume ratio is discharged into the first and second intermediate water tanks respectively.
3) it is anti-to be pumped into the coupling denitrification that ferments by the second water inlet peristaltic pump of opening for the first intermediate water tank Central Asia nitrate wastewater
Device is answered, while sludge in storage mud tank being added to fermentation coupling denitrification reactor, denitrification process is a generation basicity
Process, as the carry out pH of reaction constantly rises, inflection point i.e. " nitrite elbow " will occur in pH curve after denitrification, beat
The second blender is opened, the anoxia stirring time passes through pH/DO real-time monitoring device strict control by aeration time, when pH curve goes out
Stop stirring when existing " nitrite elbow ", the second blender of closing, supernatant is discharged into the second intermediate water tank after precipitating 90min.
4) it opens third water inlet peristaltic pump nitrite nitrogen/ammonia nitrogen that concentration ratio in the second intermediate water tank is 1-1.32 gives up
Water is pumped into anaerobic ammonia oxidation reactor, and control third water inlet wriggling flow rate pump is 0.15L/h, anaerobic ammonia oxidation reactor waste water by
First refluxing opening is pumped into the second refluxing opening by the first reflux peristaltic pump, and control the first reflux wriggling flow rate pump is 0.45L/h.
Long run test the result shows that:
Short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process is respectively 1736 in influent ammonia nitrogen, total nitrogen and COD concentration
Under conditions of ± 40mg/L, 2023 ± 75mg/L and 2109 ± 200mg/L, nitrogen removal rate and TN removel rate can reach
To 98.7% and 0.52kg/m3d.Excess sludge more than 62.5% completes minimizing, average cell decaying speed within the system
Rate is 0.274/d, and mean sludge digestion rate is up to 5.96kg/m3d。
Claims (2)
1. short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process processing treatment of advanced stage landfill leachate device, which is characterized in that
Including raw water water tank (1), short distance nitration reactor (2), the first intermediate water tank (3), excess sludge conservation tank (4), fermentation coupling
Denitrification reactor (5), the second intermediate water tank (6), anaerobic ammonia oxidation reactor (7)；
The raw water water tank is equipped with overflow pipe and water outlet；The short distance nitration reactor (2) be equipped with air compressor (2.1),
Gas flowmeter (2.2), aeration sand head (2.3), the first water inlet (2.5), the first sample tap (2.9), the first discharge outlet
(2.10), the first blender (2.7), the first water inlet peristaltic pump (2.4), pH/DO real-time monitoring device (2.8), ORP real-time monitoring
Device (2.6)；The fermentation coupling denitrification reactor (5) is equipped with the second water inlet (5.2), the first mud inlet (5.3), second
Discharge outlet (5.6), the second water inlet peristaltic pump (5.1), the second blender (5.4), pH real-time watch device (5.5)；The anaerobism
Ammonia oxidation reactor is equipped with blow-down pipe (7.6), third water inlet (7.2), third water inlet peristaltic pump (7.1), the first refluxing opening
(7.7), the first reflux peristaltic pump (7.9), the second refluxing opening (7.10), three phase separator (7.4), exhaust outlet (7.5), airbag
(7.3), third discharge outlet (7.6)；
Raw water water tank (1) is connected by the first water inlet peristaltic pump (2.4) with the first water inlet of short distance nitration reactor (2.5)；It is short
The first water outlet of journey nitrator (2.10) respectively with the first intermediate water tank water inlet (3.1) and the second intermediate water tank water inlet
(6.2) it is connected, air is squeezed by air compressor (2.1), gas flowmeter (2.2) eventually by aeration sand head (2.3) short
Journey nitrator (2)；First intermediate water tank water outlet (3.3) couples anti-nitre with fermentation by the second water inlet peristaltic pump (5.1)
Change the second water inlet of reactor (5.2) to be connected；Sludge conservation tank (4) is connected with fermentation the first mud inlet of coupling denitrification (5.3)；
Fermentation the second discharge outlet of coupling denitrification reactor (5.6) is connected with the second intermediate water tank (6)；Second intermediate water tank water outlet
(6.4) it is connected by third water inlet peristaltic pump (7.1) with anaerobic ammonia oxidation reactor third water inlet (7.2)；Anammox
The first refluxing opening of reactor (7.7) is connected by the first reflux peristaltic pump (7.9) with the second refluxing opening (7.10).
2. carrying out short distance nitration-fermentation/denitrification-anaerobic ammonia oxidation process using claim 1 described device handles advanced stage rubbish
Rubbish percolate, which is characterized in that including following procedure:
1) short distance nitration sludge, fermentation coupling denitrification sludge, anaerobic ammonium oxidation sludge are added to short distance nitration and is reacted respectively
In device, fermentation coupling denitrification reactor and anaerobic ammonia oxidation reactor, it is dense that control adds rear each reactor mixed liquor sludge
Degree is respectively 4125-5079mg/L, 8797-16522mg/L and 5633-6210mg/L；
2) treatment of advanced stage landfill leachate in raw water water tank is pumped into short distance nitration reactor, opens the first blender and air pressure
Contracting machine controls short distance nitration reactor dissolved oxygen concentration 0.2-0.5mg/L, needs to consume basicity during short distance nitration, when anti-
PH is preferably minimized i.e. " ammonia valley point " after answering, and aeration time is by pH/DO real-time monitoring device strict control, when pH curve goes out
Stop aeration when existing " ammonia valley point ", close the first blender and air compressor, will be discharged after precipitating 30min according to 25:2 volume
Than being discharged into the first and second intermediate water tanks respectively；
3) it opens the second water inlet peristaltic pump and the first intermediate water tank Central Asia nitrate wastewater is pumped into fermentation coupling denitrification reactor,
Sludge in storage mud tank is added to fermentation coupling denitrification reactor simultaneously, denitrification process is the process of a generation basicity,
As the carry out pH of reaction constantly rises, inflection point i.e. " nitrite elbow " will occur in pH curve after denitrification, open the
Two blenders, anoxia stirring time pass through pH/DO real-time monitoring device strict control by aeration time, when pH curve occurs
Stop stirring when " nitrite elbow ", the second blender of closing, supernatant is discharged into the second intermediate water tank after precipitating 90min.
4) third water inlet peristaltic pump is opened to pump nitrite nitrogen/ammonia nitrogen waste water that concentration ratio in the second intermediate water tank is 1-1.32
Enter anaerobic ammonia oxidation reactor, control third water inlet wriggling flow rate pump is 0.15L/h, and anaerobic ammonia oxidation reactor waste water is by first
Refluxing opening is pumped into the second refluxing opening by the first reflux peristaltic pump, and control the first reflux wriggling flow rate pump is 0.45L/h.
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| CN110002677A (en) * | 2019-04-19 | 2019-07-12 | 北京工业大学 | Deep treatment method after the anaerobic digestion of excess sludge of municipal sewage plant |
| CN112250178A (en) * | 2020-09-24 | 2021-01-22 | 北京工业大学 | Method and device for realizing advanced denitrification and sludge reduction of late landfill leachate by using sludge fermentation carbon source |
| CN112390358A (en) * | 2020-11-09 | 2021-02-23 | 北京工业大学 | Device and method for enhancing domestic sewage denitrification by coupling anaerobic methanogenesis and shortcut nitrification anaerobic ammonia oxidation |
| CN113003725A (en) * | 2021-02-20 | 2021-06-22 | 北京工业大学 | Device and method for promoting quality improvement and efficiency improvement of sewage plant based on DEAMOX and sludge fermentation coupling technology |
| CN113003722A (en) * | 2021-02-09 | 2021-06-22 | 北京工业大学 | Device and method for synchronously treating landfill leachate and excess sludge through three-stage type shortcut nitrification-anaerobic ammonia oxidation process |
| CN113184989A (en) * | 2021-02-09 | 2021-07-30 | 北京工业大学 | Device and method for synchronously treating sewage and sludge by combining sectional water inlet shortcut nitrification and anaerobic ammonia oxidation |
| CN114291962A (en) * | 2021-11-26 | 2022-04-08 | 北京工业大学 | Device and method for treating late landfill leachate by three-stage plug flow type PN-PNA-DE process |
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