CN105036334A - Device and method for treating urban sewage through repeated-water-inlet SBR by fully utilizing carbon source in raw water - Google Patents
Device and method for treating urban sewage through repeated-water-inlet SBR by fully utilizing carbon source in raw water Download PDFInfo
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Abstract
The invention discloses a device and a method for treating urban sewage through a repeated-water-inlet SBR by fully utilizing a carbon source in raw water, and belongs to the field of biological sewage treatment through a biochemical method. The device comprises a raw water box, a sequencing batch reactor (SBR) and a computer. The method comprises the following steps: feeding urban sewage into the SBR, and then performing stirring and aeration; repeating the stirring and aeration for 2-3 times; after the final aeration is finished, continuously performing stirring, precipitating and water discharging. In the stirring processes, the pH values of denitrification ending points are monitored in a real-time time, and in the aeration processes, the DO and pH values of shortcut nitrification ending points are monitored in a real-time manner. The carbon source in the raw water is fully utilized for denitrification, one part of organic matters in the raw water is directly utilized, and the other part of organic matters is stored into sludge to be used as an internal carbon source to be utilized by the denitrification reaction in the final stirring process. The anoxic denitrification time and the aerobiotic aeration time can be accurately controlled, the utilization rate of the carbon source in the raw water and the total nitrogen removal rate are improved, and the energy consumption is reduced.
Description
Technical field
The present invention relates to a kind of SBR biological treatment and device of nitrogenous effluent, especially can make full use of carbon source in former water and implementation procedure controls in real time, belong to city domestic sewage biologic treating technique field.
Background technology
" urban wastewater treatment firm pollutant emission standard " (GB18918-2002) middle one-level A standard-required pollutant discharging unit effluent quality that China promulgated in 2002 is that COD is less than 50mg/L, ammonia nitrogen is less than 5mg/L, total nitrogen is less than 15mg/L, and total phosphorus is less than 0.5mg/L.Domestic many Sewage Plant can not realize the qualified discharge of total nitrogen, how to improve denitrification effect, are the active demands of present stage field of municipal sewage treatment.
Bio-denitrifying sewage is by nitrated by NH
4 +-N is converted into NO
3 --N, then by denitrification by NO
3 --N is converted into nitrogen and overflows from water.The denitrification stage is with NO
3 --N is electron acceptor(EA), and nitre nitrogen transformation, as electron donor, is that nitrogen completes biological denitrificaion by organism.Nitrifying process controlled in the nitrous stage by short distance nitration technology, can save the aeration rate of 25% and the carbon source of 40%.
Though traditional bio-denitrifying sewage technology such as A/O, A2/O technique has certain denitrification effect, because the controllability of its operational process is poor, the clearance of nitrogen is difficult to reach more than 80%.In addition to there be higher sludge concentration in keeping system, sludge reflux and nitrification liquid backflow must be carried out, add running cost and energy consumption.The treatment unit of traditional SBR technique only has a sbr reactor pond, and water inlet, reaction, precipitation, draining etc. are all carried out in this reaction tank, and floor space is little, is sewage disposal process by activated sludge process more conventional at present.But traditional SBR treatment process often there will be reaction times long waste that nitrification and denitrification effect not exclusively or rule of thumb sets unnecessary time and energy dissipation.
In SBR technique traditional aerobic/operation scheme of anoxic, the carbon source in former water is removed in aeration process, wastes carbon source, the object of advanced nitrogen be reached, also need add a large amount of carbon source in denitrification process, add working cost.And the operation scheme of anoxic/aerobic makes water outlet total nitrogen can not be up to standard because there is nitric nitrogen and nitrite nitrogen in water outlet.
Summary of the invention
The object of the invention is to solve the problem, a kind of repeatedly water-feeding SBR is provided to make full use of the device of former water carbon source process city domestic sewage, and controlled by implementation process that properly distributed stirs at every turn, time of aeration, the object of advanced nitrogen can be issued in the condition of saving working cost.
For achieving the above object, the invention provides the device that a kind of repeatedly water-feeding SBR makes full use of former water carbon source process city domestic sewage, comprise raw water box (1), former water intake pump (2), sequencing batch reactor SBR (3), air compressor (4), gas meter (5), aeration head (6), agitator (7), water discharge valve (8), mud valve (9), pH pops one's head in (10), DO pops one's head in (11), pH determinator (12), DO determinator (13), computer (14), signal input port (15), signal output port (16), process controller (17), intake pump rly. (18), aeration pump rly. (19), agitator rly. (20), water discharge valve rly. (21), mud valve rly. (22), process controller signal output port (23), indicating meter (24).
Raw water box (1) is connected with SBR (3) by former water intake pump (2), and SBR (3) is connected with water discharge valve (8) and mud valve (9) respectively.SBR (3) inside arranges aeration head (6), agitator (7), pH pops one's head in (10), DO pops one's head in (11), air compressor (4) is connected with aeration head (6) by gas meter (5), pH pops one's head in (10), DO probe (11) respectively with pH determinator (12), DO determinator (13) connects, data message on determinator is connected with computer (14) by signal input port (15), data message is presented on indicating meter (24), the signal output port (16) of computer (14) is through wire connection procedure controller (17), the intake pump rly. (18) of process controller, aeration pump rly. (19), agitator rly. (20), water discharge valve rly. (21), mud valve rly. (22) respectively with former water intake pump (2), air compressor (4), agitator (7), water discharge valve (8), mud valve (9) connects.
The present invention provides repeatedly water-feeding SBR to make full use of the method for former water carbon source process city domestic sewage simultaneously, comprises the following steps:
(1) starter gear, realize short distance nitration: with the nitrifying sludge of municipal sewage plant for seed sludge injects SBR, its sludge concentration is 2000-4000mg/L, simultaneously, inject raw water box using city domestic sewage as former water, squeeze in SBR by former water intake pump; Starting aerating system subsequently carries out nitrated to the city domestic sewage in SBR, and in reaction process, DO maintains 1.5-2mg/L, and pH value maintains 7.8-8.5; SBR draining is than being 0.5-0.7, and run 4-5 cycle every day, each cycle comprises into water, stirs, aeration, precipitation, draining, idle, run SBR under these conditions, when its water outlet nitrite accumulation rate is greater than 95% and continues maintenance more than 15 days, SBR short distance nitration is achieved;
(2) running gear, realizes former water carbon source and makes full use of:
(I) intake: according to flooding quantity determination flooding time, and set timing register by controller, start intake pump, the sanitary sewage in raw water box is injected SBR, and after reaching the time preset, intake pump is closed automatically, water inlet end;
(II) stir: after water inlet end, agitator is opened automatically, starts to carry out anti-nitration reaction in SBR.Data message by pH probe monitors, and is input in computer by data collecting card by pH determinator by denitrification process, and data are as the real-time controling parameters of anoxic denitrification; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just becoming negative, and churning time is greater than 0.5h; Churning time is greater than 1.5h.Proof anti-nitration reaction terminates, and agitator cuts out automatically;
(III) aeration: air compressor is opened automatically, enter aerobic stage, pH probe, DO probe measure pH value, dissolved oxygen concentration DO in water respectively, be input in computer by data message by data collecting card by pH determinator, DO determinator, data are as the real-time controling parameters of aerobic short distance nitration; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just bearing change, and aeration time is greater than 1h; DO is greater than 4mg/L, and aeration time is greater than 2h.Prove that aerobic short distance nitration terminates, air compressor cuts out automatically;
(IV) I, II, III step 2 ~ 3 time are repeated;
(V) stir: aeration terminates rear agitator and automatically opens, SBR enters the endogenous denitrification stage, data by pH probe monitors, and are input in computer by data collecting card by pH determinator by denitrification process, and the data after process are as the real-time controling parameters of endogenous denitrification; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just becoming negative, and churning time is greater than 1h; Churning time is greater than 1.5h.Prove that endogenous denitrification reaction terminates, agitator cuts out automatically;
(VI) precipitate: setting sedimentation time is in a computer 0.5h ~ 1h, carries out timing until precipitated by the time controller in real-time control system;
(VII) draining: setting water discharge time is in a computer 5min ~ 20min, and carry out timing by the time controller in real-time control system, the automatic opening water discharge valve of system, after reaching the water discharge time of setting, water discharge valve cuts out automatically;
(VIII) idle: after draining terminates, according to 1h ~ 2h idle mixing time of computer settings, to carry out timing by the time controller in real-time control system, when system after the idle mixing time reaching setting enters the operation of next cycle automatically.
Know-why of the present invention is as follows:
After city domestic sewage enters SBR for the first time, whipping process utilizes the organism in former water under the effect of denitrifying bacteria, remove a cycle remaining nitrite nitrogen.Intake afterwards at every turn, denitrifying bacterium utilizes the organism in former water to be electron donor, nitrite nitrogen is electron acceptor(EA), and the nitrite nitrogen that aeration produces before is reduced to nitrogen, and this process is external source denitrification process, denitrification process constantly can produce basicity, pH constantly rises, and after denitrification terminates, repeatedly SBR enters the anaerobic fermentation and acid production stage, pH can become decline from rising, occurs unique point.Accurately can judge the process of anti-nitration reaction according to the variation tendency of pH curve and unique point, when meeting the condition that denitrification terminates, stop stirring, saving the energy dissipation that excessive agitation causes.
After denitrification completes, start aeration, remaining organism and ammonia nitrogen in the dioxygen oxidation city domestic sewage that active sludge in reactor utilizes air compressor to blast, first organism is degraded by aerobic heterotrophic bacterium, then ammonia nitrogen is oxidized to nitrite nitrogen by nitrococcus, after having reacted, the dissolved oxygen in reactor can not be utilized by Institute of Micro-biology again, so DO there will be rise to phenomenon.Nitrosation reaction is a reaction of producing acid, and the basicity in meeting and in sewage causes pH to decline, and at the end of nitrosation reaction, produce acid stop, now CO2 is by a large amount of stripping, and pH value becomes rising from decline, occurs unique point.According to variation tendency and the unique point of DO, pH curve, adopt and control in real time accurately to manipulate aeration time, avoid excess aeration and waste energy.
A part of organism in water inlet can be stored in mud inside in anoxia stirring process and become internal carbon source, intake for the last time in each cycle, stir, after aeration terminates, continue to stir, the internal carbon source in bacterial body can be hydrolyzed the available carbon source of generation and carry out endogenous denitrification reaction.This process reaction speed comparatively external source denitrification rate is slow, and pH constantly slowly rises, and denitrification terminates rear pH and becomes decline from rising, occurs unique point.According to variation tendency and the unique point of pH curve, the process that endogenous denitrification reacts can be judged, when meeting the condition that endogenous denitrification terminates, stop stirring, entering precipitate phase.Precipitate rear draining, left unused, then enter next cycle.
Compared with prior art, the present invention has the following advantages:
1. denitrification effect is good.Water outlet ammonia nitrogen is less than 5mg/L, and total nitrogen is less than 15mg/L, can reach the one-level A standard-required in the pollution exhaust criteria of country's promulgation in 2002.
2. take full advantage of the organic carbon source in former water, wherein a part is used directly to anti-nitration reaction, a part is stored in mud inside in whipping process becomes internal carbon source, produces available carbon source to carry out denitrification at the last anoxia stirring stage hydrolysis of reaction.Without the need to adding outer carbon source, save the expense of additional carbon, simultaneously because the organism in sewage is by as denitrifying carbon source, this saves on the oxygen of oxidation required for these organism, both save the energy consumption of air compressor, also mitigate the impact of Organic Matters on Nitrification.
In 3.SBR, the aerobic aeration stage carries out short distance nitration reaction, is controlled by nitrifying process in the nitrous stage, can save the aeration rate of 25% and the carbon source of 40%.
4. adopt the aerobic aeration in process Real-Time Control Strategy control biological denitrification process and anoxia stirring time, fundamentally solve aeration or the nitrosation reaction caused by churning time deficiency and anti-nitration reaction is incomplete, and aeration or the long raising of brought running cost of churning time and the waste of the energy.And in the reaction times that can control needed for each biochemical reaction in real time according to the change of the raw water quality water yield, realize intelligentized control, Optimization of Energy Saving under the prerequisite ensureing effluent quality, and the load impact that can successfully manage raw water quality change.
5. agent set is a SBR, organism and nitrogenous compound is removed in a reactor, decreases the structures such as anoxic pond, settling tank, thus reduce floor space and the initial cost of whole technique.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention
Fig. 2 is the Real-Time Control Strategy figure of apparatus of the present invention
In Fig. 1, primary symbols is described as follows:
1-raw water box 2-former water intake pump 3-sequencing batch reactor
4-air compressor 5-gas meter 6-aeration head
7-agitator 8-water discharge valve 9-mud valve
10-pH probe 11-DO probe 12-pH determinator
13-DO determinator 14-computer 15-signal input port
16-signal output port 17-process controller 18-intake pump rly.
19-aeration rly. 20-agitator rly. 21-water discharge valve rly.
22-mud valve rly. 23-process controller signal exports 24-indicating meter port
Embodiment
In conjunction with the accompanying drawings and embodiments the present invention is described in further detail.
As shown in Figure 1, repeatedly water-feeding SBR makes full use of the device of former water carbon source process city domestic sewage, comprise raw water box (1), former water intake pump (2), sequencing batch reactor SBR (3), air compressor (4), gas meter (5), aeration head (6), agitator (7), water discharge valve (8), mud valve (9), pH pops one's head in (10), DO pops one's head in (11), pH determinator (12), DO determinator (13), computer (14), signal input port (15), signal output port (16), process controller (17), intake pump rly. (18), aeration pump rly. (19), agitator rly. (20), water discharge valve rly. (21), mud valve rly. (22), process controller signal output port (23), indicating meter (24).
Raw water box (1) is connected with SBR (3) by former water intake pump (2), and SBR (3) is connected with water discharge valve (8) and mud valve (9) respectively.SBR (3) inside arranges aeration head (6), agitator (7), pH pops one's head in (10), DO pops one's head in (11), air compressor (4) is connected with aeration head (6) by gas meter (5), pH pops one's head in (10), DO probe (11) respectively with pH determinator (12), DO determinator (13) connects, data message on determinator is connected with computer (14) by signal input port (15), data message is presented on indicating meter (24), the signal output port (16) of computer (14) is through wire connection procedure controller (17), the intake pump rly. (18) of process controller, aeration pump rly. (19), agitator rly. (20), water discharge valve rly. (21), mud valve rly. (22) respectively with former water intake pump (2), air compressor (4), agitator (7), water discharge valve (8), mud valve (9) connects.
Concrete test water adopts Beijing University of Technology's dependents' district sanitary sewage as former water, and concrete water quality is as follows: COD concentration is 180-300mg/L, NH
4 +-N concentration is 50-85mg/L, NO
2 --N and NO
3 --N is all below detectability, and pH is 6.5-7.8.Selected sbr reactor device useful volume 12L, draining ratio is 70%, point three water inlets, adjustment pump speed is 240ml/min, 7min of intaking for the first time, 12min of intaking for the second time, third time intakes 16min, and rear sludge concentration of having intake for three times is 2500 ~ 3500mg/L, and aeration rate is constant in 0.6m
3/ h, sludge age maintains about 15d.Carrying out practically operating process is as follows:
(1) starter gear, realize short distance nitration: with the nitrifying sludge of municipal sewage plant for seed sludge injects SBR, its sludge concentration is 2000-4000mg/L, simultaneously, inject raw water box using city domestic sewage as former water, squeeze in SBR by former water intake pump; Starting aerating system subsequently carries out nitrated to the city domestic sewage in SBR, and in reaction process, DO maintains 1.5-2mg/L, and pH value maintains 7.8-8.5; SBR draining is than being 0.5-0.7, and run 4-5 cycle every day, each cycle comprises into water, stirs, aeration, precipitation, draining, idle, run SBR under these conditions, when its water outlet nitrite accumulation rate is greater than 95% and continues maintenance more than 15 days, SBR short distance nitration is achieved;
(2) running gear, realizes former water carbon source and makes full use of:
(I) intake: the time setting three water inlets is in a computer respectively 7min, 12min, 16min, start intake pump, regulate water inlet pump speed to be 240mL/min, sanitary sewage in raw water box is injected SBR, after reaching the time preset, intake pump is closed automatically, water inlet end;
(II) stir: after water inlet end, agitator is opened automatically, starts to carry out anti-nitration reaction in SBR.Data message by pH probe monitors, and is input in computer by data collecting card by pH determinator by denitrification process, and data are as the real-time controling parameters of anoxic denitrification; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just becoming negative, and churning time is greater than 0.5h; Churning time is greater than 1.5h.Proof anti-nitration reaction terminates, and agitator cuts out automatically;
(III) aeration: air compressor is opened automatically, enter the aerobic short distance nitration stage, pH probe, DO probe measure pH value, dissolved oxygen concentration DO in water respectively, be input in computer by data message by data collecting card by pH determinator, DO determinator, data are as the real-time controling parameters of aerobic short distance nitration; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just bearing change, and aeration time is greater than 1h; DO is greater than 4mg/L, and aeration time is greater than 2h.Prove that aerobic short distance nitration terminates, air compressor cuts out automatically;
(IV) I, II, III step 2 time is repeated;
(V) stir: aeration terminates rear agitator and automatically opens, SBR enters the endogenous denitrification stage, data by pH probe monitors, and are input in computer by data collecting card by pH determinator by denitrification process, and the data after process are as the real-time controling parameters of endogenous denitrification; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just becoming negative, and churning time is greater than 1h; Churning time is greater than 1.5h.Prove that endogenous denitrification reaction terminates, agitator cuts out automatically;
(VI) precipitate: setting sedimentation time is in a computer 1h, carries out timing until precipitated by the time controller in real-time control system;
(VII) draining: setting water discharge time is in a computer 15min, and carry out timing by the time controller in real-time control system, the automatic opening water discharge valve of system, after reaching the water discharge time of setting, water discharge valve cuts out automatically;
(VIII) idle: the idle mixing time set in a computer is 1h, carries out timing by the time controller in real-time control system, when system after the idle mixing time reaching setting enters the operation of next cycle automatically.
Continuous print test-results shows: apply the device that repeatedly water-feeding SBR makes full use of former water carbon source process city domestic sewage, final outflow water COD is less than 50mg/L, ammonia nitrogen is less than 5mg/L, and total nitrogen is less than 15mg/L, meets the one-level A standard-required of national urban wastewater treatment firm pollutant emission standard.
Claims (2)
1. many water-feeding SBRs make full use of the device of former water carbon source process city domestic sewage, it is characterized in that, comprise raw water box (1), former water intake pump (2), sequencing batch reactor SBR(3), air compressor (4), gas meter (5), aeration head (6), agitator (7), water discharge valve (8), mud valve (9), pH pops one's head in (10), DO pops one's head in (11), pH determinator (12), DO determinator (13), computer (14), signal input port (15), signal output port (16), process controller (17), intake pump rly. (18), aeration pump rly. (19), agitator rly. (20), water discharge valve rly. (21), mud valve rly. (22), process controller signal output port (23), indicating meter (24),
Raw water box (1) is by former water intake pump (2) and SBR(3) be connected, SBR(3) be connected with water discharge valve (8) and mud valve (9) respectively, SBR(3) inside arranges aeration head (6), agitator (7), pH pops one's head in (10), DO pops one's head in (11), air compressor (4) is connected with aeration head (6) by gas meter (5), pH pops one's head in (10), DO probe (11) respectively with pH determinator (12), DO determinator (13) connects, data message on determinator is connected with computer (14) by signal input port (15), data message is presented on indicating meter (24), the signal output port (16) of computer (14) is through wire connection procedure controller (17), the intake pump rly. (18) of process controller, aeration pump rly. (19), agitator rly. (20), water discharge valve rly. (21), mud valve rly. (22) respectively with former water intake pump (2), air compressor (4), agitator (7), water discharge valve (8), mud valve (9) connects.
2. application rights requires the method for device process city domestic sewage described in 1, it is characterized in that, comprises the following steps:
(1) starter gear, realize short distance nitration: with the nitrifying sludge of municipal sewage plant for seed sludge injects SBR, its sludge concentration is 2000-4000mg/L, simultaneously, inject raw water box using city domestic sewage as former water, squeeze in SBR by former water intake pump; Starting aerating system subsequently carries out nitrated to the city domestic sewage in SBR, and in reaction process, DO maintains 1.5-2mg/L, and pH value maintains 7.8-8.5; SBR draining is than being 0.5-0.7, and run 4-5 cycle every day, each cycle comprises into water, stirs, aeration, precipitation, draining, idle, run SBR under these conditions, when its water outlet nitrite accumulation rate is greater than 95% and continues maintenance more than 15 days, SBR short distance nitration is achieved;
(2) running gear:
(I) intake: according to flooding quantity determination flooding time, and set timing register by controller, start intake pump, the sanitary sewage in raw water box is injected SBR, and after reaching the time preset, intake pump is closed automatically, water inlet end;
(II) stir: after water inlet end, agitator is opened automatically, starts to carry out anti-nitration reaction in SBR; Data message by pH probe monitors, and is input in computer by data collecting card by pH determinator by denitrification process, and data are as the real-time controling parameters of anoxic denitrification; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just becoming negative, and churning time is greater than 0.5h; Churning time is greater than 1.5h; Proof anti-nitration reaction terminates, and agitator cuts out automatically;
(III) aeration: air compressor is opened automatically, enter aerobic stage, pH probe, DO probe measure pH value, dissolved oxygen concentration DO in water respectively, be input in computer by data message by data collecting card by pH determinator, DO determinator, data are as the real-time controling parameters of aerobic short distance nitration; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just bearing change, and aeration time is greater than 1h; DO is greater than 4mg/L, and aeration time is greater than 2h; Prove that aerobic short distance nitration terminates, air compressor cuts out automatically;
(IV) I, II, III step 2 ~ 3 time are repeated;
(V) stir: aeration terminates rear agitator and automatically opens, SBR enters the endogenous denitrification stage, data by pH probe monitors, and are input in computer by data collecting card by pH determinator by denitrification process, and the data after process are as the real-time controling parameters of endogenous denitrification; By data signal input process controller, by filtering process and calculating, draw process real time control variables, and by control strategy, the real time control variables drawn is compared, when meeting any one: the pH curve first order derivative in following two conditions by just becoming negative, and churning time is greater than 1h; Churning time is greater than 1.5h; Prove that endogenous denitrification reaction terminates, agitator cuts out automatically;
(VI) precipitate: setting sedimentation time is in a computer 0.5h ~ 1h, carries out timing until precipitated by the time controller in real-time control system;
(VII) draining: setting water discharge time is in a computer 5min ~ 20min, and carry out timing by the time controller in real-time control system, the automatic opening water discharge valve of system, after reaching the water discharge time of setting, water discharge valve cuts out automatically;
(VIII) idle: after draining terminates, according to 1h ~ 2h idle mixing time of computer settings, to carry out timing by the time controller in real-time control system, when system after the idle mixing time reaching setting enters the operation of next cycle automatically.
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| CN113213630A (en) * | 2021-05-21 | 2021-08-06 | 光大水务科技发展（南京）有限公司 | Sequential control method for applying short-cut nitrification and denitrification process of wastewater to biochemical pool |
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| CN107555599A (en) * | 2017-09-06 | 2018-01-09 | 广东工业大学 | A kind of short-cut nitrification and denitrification sbr reactor system and its control method for handling rubbish leachate |
| CN108128897B (en) * | 2018-01-05 | 2021-09-10 | 北京工业大学 | Device and method for realizing synchronous shortcut nitrification and denitrification dephosphorization treatment of municipal sewage based on hydroxylamine |
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| CN108840436A (en) * | 2018-08-29 | 2018-11-20 | 黄河勘测规划设计有限公司 | A kind of short-cut nitrification-denitrification reaction unit and production technology |
| CN109095733A (en) * | 2018-10-31 | 2018-12-28 | 北京安国水道自控工程技术有限公司 | A kind of deep denitrogenation device and method of low ratio of carbon to ammonium city domestic sewage |
| CN109179911A (en) * | 2018-10-31 | 2019-01-11 | 北京安国水道自控工程技术有限公司 | A kind of deep denitrogenation device and method of city domestic sewage |
| CN110156163A (en) * | 2019-06-15 | 2019-08-23 | 北京中科宇清环保有限公司 | Handle the integrated reactor of sanitary sewage |
| CN110330180A (en) * | 2019-07-17 | 2019-10-15 | 大连海洋大学 | A kind of system and method for mainstream short-cut nitrification and denitrification/Anammox |
| CN110330180B (en) * | 2019-07-17 | 2022-03-01 | 大连海洋大学 | Mainstream shortcut nitrification-denitrification/anaerobic ammonia oxidation system and method |
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| CN113213630A (en) * | 2021-05-21 | 2021-08-06 | 光大水务科技发展（南京）有限公司 | Sequential control method for applying short-cut nitrification and denitrification process of wastewater to biochemical pool |
| CN113213630B (en) * | 2021-05-21 | 2022-09-02 | 光大水务科技发展（南京）有限公司 | Sequential control method for applying short-cut nitrification and denitrification process of wastewater to biochemical pool |
| CN113371825A (en) * | 2021-06-03 | 2021-09-10 | 重庆固高科技长江研究院有限公司 | Sewage treatment device and sewage treatment method thereof |
| CN116161777A (en) * | 2022-09-07 | 2023-05-26 | 北京工业大学 | Control system for controlling partial short-cut nitrification aeration time of municipal sewage based on influent ammonia nitrogen concentration and water temperature |
| CN116161777B (en) * | 2022-09-07 | 2024-04-19 | 北京工业大学 | Control system for controlling partial short-cut nitrification aeration time of municipal sewage based on influent ammonia nitrogen concentration and water temperature |
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