CN103011507A - Control method and device for deep denitrification treatment of garbage leachate by combination of short-range nitrification and anaerobic ammoxidation - Google Patents

Control method and device for deep denitrification treatment of garbage leachate by combination of short-range nitrification and anaerobic ammoxidation Download PDF

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CN103011507A
CN103011507A CN2012105374882A CN201210537488A CN103011507A CN 103011507 A CN103011507 A CN 103011507A CN 2012105374882 A CN2012105374882 A CN 2012105374882A CN 201210537488 A CN201210537488 A CN 201210537488A CN 103011507 A CN103011507 A CN 103011507A
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CN103011507B (en
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王淑莹
苗蕾
王凯
彭永臻
朱如龙
李忠明
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ZHONGSHAN PUBLIC UTILITIES WATER Co.,Ltd.
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Beijing University of Technology
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Abstract

The invention discloses a control method and device for deep denitrification treatment of garbage leachate by combination of short-range nitrification and anaerobic ammoxidation, relating to the field of biological sewage treatment. The invention can solve the problem of difficulty in deep denitrification of garbage leachate. Denitrification reaction and organic substance removal are carried out in a first SBR (sequencing batch reactor), and the process is controlled by real-time ORP and pH monitoring. 60% of effluent water of the first SBR directly enters a second SBR to be subjected to short-range nitrification which is controlled by real-time DO and pH monitoring. 40% of effluent water of the first SBR and effluent water of the second SBR are mixed and enter an ASBR (anaerobic sequencing batch reactor) in a continuous water inlet mode to be subjected to anaerobic ammoxidation, and the process is controlled by real-time pH monitoring. After draining, 70% of effluent water flows back to an influent water tank, and the rest of effluent water is discharged for the next cycle. The invention can accurately control the denitrification mixing time as well as organic substance removal and short-range nitrification aeration time, and has the advantages of energy consumption saving, shorter reaction time, no need of external carbon source, high TN removal rate and the like.

Description

Control method and device that short distance nitration associating Anammox is processed landfill leachate depth denitrification
Technical field
The present invention relates to the biological sewage treatment field, especially a kind of control method and device that percolate is carried out the advanced nitrogen processing.
Background technology
Along with the fast development of economy and the progressively raising of people's living standard, municipal wastes output constantly increases.Adopt landfill disposal at the most of rubbish of China at present, garbage loading embeading is a kind of effectively cheap processing mode, yet has been had a strong impact on the water surrounding of China by the percolate that landfill produces.Percolate be rubbish stack and the landfill process in pass through the rainwater shower, wash away and the immersion of fermentation and surface water, underground water and ooze drop sewage out.Percolate is chocolate, and composition is very complicated, contains a large amount of organism and ammonia nitrogen, also is rich in simultaneously poisonous and hazardous heavy metal ion, belongs to high ammonia nitrogen used water difficult to degradate.The environment such as the atmosphere around the discharging percolate can be given, water body, soil bring severe contamination, and particularly ammonia nitrogen in high density can produce murder by poisoning and cause water eutrophication water body.
Physico-chemical processes and biological process are mainly adopted in the processing of percolate.But the physical chemistry method processing cost is higher, generally is used for pre-treatment or the advanced treatment of percolate.Mainly adopt at present biological process treating refuse percolate.Yet traditional biological treatment denitrogenation, not only difficulty reaches cleanup standard, and the additional carbon that denitrification adds has also increased processing cost.Therefore how processing cost-effectively percolate, is the Focal point and difficult point of China water treatment aspect.
At present, many novel procesies have been reported for biological denitrificaion, such as anaerobic ammonia oxidation process.According to the Anammox reaction, anaerobic ammonia oxidizing bacteria can be converted into nitrogen with ammonia nitrogen and nitrite nitrogen.Because anaerobic ammonia oxidizing bacteria belongs to the anaerobism autotrophic bacteria, reaction process need not oxygen and organism, thus can save 50% oxygen supply expense and a large amount of organic carbon sources, thus also greatly reduced processing costs and the capital cost of sewage disposal.Yet the large amount of organic that contains in the percolate can have a negative impact to anaerobic ammonia oxidizing bacteria, and simultaneously Anammox reaction can produce a certain amount of nitric nitrogen, causes system's water outlet still to also have nitric nitrogen, affects the nitric efficiency of system.These all are that anaerobic ammonia oxidation process is used urgent problem.
Summary of the invention
For the weak point of above-mentioned technology, the invention provides a kind of device and method, can solve the problem of landfill leachate depth denitrification difficulty.
The control device that the nitrated associating Anammox of journey is processed landfill leachate depth denitrification is characterized in that:
Inlet chest 2 passes through water inlet pipe SBR14, intake pump SBR13 and inlet valve SBR15 connect the first sbr reactor device 9; The first sbr reactor device 9 passes through rising pipe SBR118 and flowing water Valve SBR117 connect the first intermediate water tank 19; The first intermediate water tank 19 passes through water inlet pipe SBR234, intake pump SBR221 and inlet valve SBR222 are connected with the second sbr reactor device 74, and the first intermediate water tank 19 also passes through water inlet pipe simultaneously The second intermediate water tank35, intake pump The second intermediate water tank23 and inlet valve The second intermediate water tank24 are connected with the second intermediate water tank 33; The second sbr reactor device 74 passes through rising pipe SBR232 and flowing water Valve SBR231 are connected with the second intermediate water tank 33; The second intermediate water tank 33 passes through water inlet pipe ASBR36, intake pump ASBR37 and inlet valve ASBR38 are connected with ASBR reactor 42; ASBR reactor 42 connects rising pipe ASBR43 and flowing water Valve ASBR44, simultaneously ASBR reactor 42 also is connected with ASBR reactor reflux pump by ASBR reactor return valve 45, ASBR reactor return line 46 and is connected with water tank inlet 2;
The first sbr reactor device 9 inside are provided with agitator SBR110, pH sensor SBR111, DO sensor SBR112 and the ORP sensor SBR113; The first sbr reactor device 9 also connects aeration head 6, air compressor simultaneously SBR17 and gas meter 8; The second sbr reactor device 74 inside are provided with agitator SBR228, pH sensor SBR229 and the DO sensor SBR230; The second sbr reactor device 74 also connects aeration head 6, air compressor simultaneously SBR220 and gas meter 8; ASBR reactor 42 inside are provided with agitator ASBR41 and the pH sensor ASBR39; The pH sensor SBR111, DO sensor SBR112, ORP sensor SBR113, pH sensor SBR229, DO sensor SBR230 and the pH sensor ASBR39 through data line respectively with the pH determinator SBR111, DO determinator SBR112, ORP determinator SBR113, pH determinator SBR229, DO determinator SBR230 and the pH determinator ASBRBe connected with the data signal input interface 49 of computer 48 after 39 connections, computer 48 is connected the intake pump of process controller by the data signal output interface with process controller 55 SBR1Rly., inlet valve SBR1Rly., agitator SBR1Rly., air compressor SBR1Rly., flowing water Valve SBR1Rly., intake pump SBR2Rly., inlet valve SBR2Rly., agitator SBR2Rly., air compressor SBR2Rly., intake pump The second intermediate water tankRly., inlet valve The second intermediate water tankRly., flowing water Valve SBR2Rly., intake pump ASBRRly., inlet valve ASBRRly., agitator ASBRRly., flowing water Valve ASBRRly., ASBR reactor return valve rly., ASBR reactor reflux pump rly. respectively with intake pump SBR13, inlet valve SBR15, agitator SBR110, air compressor SBR17, flowing water Valve SBR117, intake pump SBR221, inlet valve SBR222, agitator SBR228, air compressor SBR220, intake pump The second intermediate water tank23, inlet valve The second intermediate water tank24, flowing water Valve SBR231, intake pump ASBR37, inlet valve ASBR38, agitator ASBR41, flowing water Valve ASBR44, ASBR reactor return valve 45, ASBR reactor reflux pump 47 connect.
Technical problem to be solved by this invention provides the control method of short distance nitration associating Anammox treating refuse percolate advanced nitrogen, comprising:
A1, the water inlet of the first sbr reactor device is carried out timing by the time controller in the real-time control system, after system starts, intake pump SBR1With the water inlet pipe valve SBR1Automatically open, the mixed solution in the inlet chest injected the first sbr reactor device, when the flooding quantity of sbr reactor device reach sbr reactor device volume 50% the time, intake pump SBR1With the water inlet pipe valve SBR1Autoshutdown, water inlet end;
A2, behind the water inlet end, agitator SBR1Automatically open, the first sbr reactor device enters the anoxic denitrification process in whipping process, and the anoxic denitrification process is by online ORP sensor SBR1Monitoring, and by data collecting card in real time with the data information transfer that obtains to computer, the condition that anoxic denitrification is finished in the first sbr reactor device is that the first order derivative of ORP is by sporting greater than-25mv/min less than-30mv/min, and churning time t is greater than 2h, and air compressor SBR1 opens automatically;
A3, air compressor SBR1Automatically after opening, air is diffused in the first sbr reactor device through aeration tube and aeration head, enters the organic matter removal stage, by the pH sensor SBR1PH value in the monitoring water is by the pH determinator SBR1Data communication device is crossed data collecting card be input in the middle of the computer, data are as the real-time control parameter of organic matter removal; The condition that organic matter removal is finished in the first sbr reactor device is the pH first order derivative by just becoming negative, and aeration time t finishes the organic matter removal process, air compressor during greater than 3h SBR1And agitator SBR1Autoshutdown;
A4, the sedimentation time of the first sbr reactor device is carried out timing by the time controller in the real-time control system, begins draining after reaching 1h, and water discharge time carries out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically SBR1, the water after the processing is through rising pipe SBR1Enter the first intermediate water tank, when water displacement reach the first sbr reactor device volume 50% after, the rising pipe valve SBR1Autoshutdown;
A5, after draining finished, system entered the A1 of next cycle automatically;
B1, the first sbr reactor device water outlet of 60% enters the second sbr reactor device in the first intermediate water tank, and 40% enters the second intermediate water tank.The water inlet of the second sbr reactor device is carried out timing by the time controller in the real-time control system, after system starts, and intake pump SBR2With the water inlet pipe valve SBR2Automatically open, the second sbr reactor device is injected in the first sbr reactor device water outlet of 60% in the first intermediate water tank.After the first sbr reactor device water outlet of 60% in the first intermediate water tank is discharged, intake pump SBR2With the water inlet pipe valve SBR2Autoshutdown, water inlet end.Subsequently, the first sbr reactor device water outlet of the first intermediate water tank 40% enters the second intermediate water tank, and its time is carried out timing, intake pump by the time controller in the real-time control system The second intermediate water tankWith the water inlet pipe valve The second intermediate water tankAutomatically open, the second intermediate water tank is injected in the first sbr reactor device water outlet of 40% in the first intermediate water tank.After the first sbr reactor device water outlet in the first intermediate water tank is drained, intake pump The second intermediate water tankWith the water inlet pipe valve The second intermediate water tankAutoshutdown, water inlet end;
B2, behind the water inlet end, agitator SBR2And air compressor SBR2Automatically open, air is diffused in the second sbr reactor device through aeration tube and aeration head, and the second sbr reactor device enters aerobic short distance nitration process in aeration, and aerobic short distance nitration process is by online pH sensor SBR2With the DO sensor SBR2Monitor respectively pH value and dissolved oxygen concentration DO in the water, by the pH determinator SBR2With the DO determinator SBR2Data communication device is crossed data collecting card be input in the middle of the computer, data are as the real-time control parameter of short distance nitration; When the nitrated condition of finishing of the second sbr reactor device medium or short range is the pH first order derivative by just becoming negative, and aeration time t when DO is greater than 2mg/L simultaneously, finishes the short distance nitration process, air compressor greater than 6h SBR2And agitator SBR2Autoshutdown;
B3, the second sbr reactor device precipitation is carried out timing by the time controller in the real-time control system, draining after reaching 1h, the time is carried out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically SBR2, the water after the processing is through rising pipe SBR2Enter the second intermediate water tank, when water displacement reach the second sbr reactor device volume 30% after the rising pipe valve SBR2Autoshutdown;
B4, after draining finished, system entered the B1 of next cycle automatically;
C1, the water inlet of ASBR reactor is carried out timing by the time controller in the real-time control system, after system starts, intake pump ASBRWith the water inlet pipe valve ASBRAutomatically open, the mixed solution in the second intermediate water tank injected the second sbr reactor device, when flooding quantity reach the ASBR reactor volume 50% after, intake pump ASBRWith the water inlet pipe valve ASBRAutoshutdown, water inlet end;
C2, behind the water inlet end, agitator ASBRAutomatically open, the ASBR reactor enters the Anammox reaction in whipping process, and the Anammox reaction process is by online pH sensor ASBRMonitoring, and by data collecting card in real time with the data information transfer that obtains to computer, the condition that the Anammox reaction is finished in described ASBR reactor is the pH first order derivative by just becoming negative, and churning time t is during greater than 6h, agitator ASBRAutoshutdown;
C3, ASBR reactor precipitation is carried out timing by the time controller in the real-time control system, after reaching 1h, 50% water after processing is discharged, and 70% of water outlet is back to raw water box.First effluent recycling is carried out timing by the time controller in the real-time control system, system opens the rising pipe valve automatically ASBR, the water after the processing enters inlet chest through return line, when the effluent recycling amount reach the ASBR reactor volume 35% the time, the rising pipe valve ASBRAutoshutdown; The residue water outlet is discharged and is carried out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically ASBR, when discharge the water yield reach the ASBR reactor 15% the time, the rising pipe valve ASBRAutoshutdown;
C4, after draining finished, system entered the C1 of next cycle automatically;
In sum, the invention provides short distance nitration associating Anammox to control method and the device of landfill leachate depth denitrification, take city garbage percolate as research object, at first carry out the removal of organism and nitrogen by denitrification and the preaeration of the first sbr reactor device, the part water outlet of the first sbr reactor device is processed through the short distance nitration of the second sbr reactor device again, the water outlet of final the first sbr reactor device and the second sbr reactor device enters the ASBR reactor after 1:1.3 mixes in proportion and carries out the Anammox reaction and realize advanced nitrogen, while ASBR effluent recycling, so that the nitric nitrogen that produces can utilize the organic carbon source in the former water to remove by denitrification, improved the denitrification percent of system.System's influent ammonium concentration is 2000 ± 100 mg/L, and water outlet ammonia nitrogen and nitrite nitrogen all are lower than 10mg/L, and total nitrogen is approximately about 60mg/L, and system's denitrification percent reaches more than 95% under the condition of additional carbon not.Whole system has realized percolate is carried out the purpose of advanced nitrogen under the condition of not adding any organic carbon source.
Description of drawings
Fig. 1 is that short distance nitration associating Anammox of the present invention is to the structural representation of landfill leachate depth denitrification control device;
Fig. 2 is that short distance nitration associating Anammox of the present invention is to the schematic flow sheet of A1 ~ A5 in the landfill leachate depth denitrification control method;
Fig. 3 is that short distance nitration associating Anammox of the present invention is to the schematic flow sheet of B1 ~ B4 in the landfill leachate depth denitrification control method;
Fig. 4 is that short distance nitration associating Anammox of the present invention is to the schematic flow sheet of C1 ~ C4 in the landfill leachate depth denitrification control method;
Typical ORP and pH Changing Pattern schematic diagram in the first sbr reactor device operational process in Fig. 5 specific embodiment of the invention;
Fig. 6 is typical pH Changing Pattern schematic diagram in the second sbr reactor device operational process in the specific embodiment of the invention;
Fig. 7 is typical pH Changing Pattern schematic diagram in the ASBR reactor operational process in the specific embodiment of the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
With reference to shown in Figure 1, the invention provides short distance nitration associating Anammox to the structural representation of landfill leachate depth denitrification control device.Inlet chest 2 is connected the first sbr reactor device 9 by water inlet pipe SBR14, intake pump SBR13 with inlet valve SBR15; The first sbr reactor device 9 is connected the first intermediate water tank 19 by rising pipe SBR118 with flowing water Valve SBR117; The first intermediate water tank 19 is connected with the second sbr reactor device 74 with inlet valve SBR222 by water inlet pipe SBR234, intake pump SBR221, and while the first intermediate water tank 19 also passes through water inlet pipe the second intermediate water tank 35, intake pump the second intermediate water tank 23 is connected intermediate water tank 24 and is connected with the second intermediate water tank 33 with inlet valve; The second sbr reactor device 74 is connected with the second intermediate water tank 33 with flowing water Valve SBR231 by rising pipe SBR232; The second intermediate water tank 33 is connected with ASBR reactor 42 with inlet valve ASBR38 by water inlet pipe ASBR36, intake pump ASBR37; ASBR reactor 42 connects rising pipe ASBR43 and flowing water Valve ASBR44, and ASBR reactor 42 also is connected with ASBR reactor reflux pump by ASBR reactor return valve 45, ASBR reactor return line 46 and is connected with water tank inlet 2 simultaneously.
The first sbr reactor device 9 inside are provided with agitator SBR110, pH sensor SBR111, DO sensor SBR112 and the ORP sensor SBR113; The first sbr reactor device 9 also connects aeration head 6, air compressor simultaneously SBR17 and gas meter 8.The second sbr reactor device 74 inside are provided with agitator SBR228, pH sensor SBR229 and the DO sensor SBR230; The second sbr reactor device 74 also connects aeration head 6, air compressor simultaneously SBR220 and gas meter 8.ASBR reactor 42 inside are provided with agitator ASBR41 and the pH sensor ASBR39.The pH sensor SBR111, DO sensor SBR112, ORP sensor SBR113, pH sensor SBR229, DO sensor SBR230 and the pH sensor ASBR39 through data line respectively with the pH determinator SBR111, DO determinator SBR112, ORP determinator SBR113, pH determinator SBR229, DO determinator SBR230 and the pH determinator ASBRBe connected with the data signal input interface 49 of computer 48 after 39 connections, computer 48 is connected the intake pump of process controller by the data signal output interface with process controller 55 SBR1Rly., inlet valve SBR1Rly., agitator SBR1Rly., air compressor SBR1Rly., flowing water Valve SBR1Rly., intake pump SBR2Rly., inlet valve SBR2Rly., agitator SBR2Rly., air compressor SBR2Rly., intake pump The second intermediate water tankRly., inlet valve The second intermediate water tankRly., flowing water Valve SBR2Rly., intake pump ASBRRly., inlet valve ASBRRly., agitator ASBRRly., flowing water Valve ASBRRly., ASBR reactor return valve rly., ASBR reactor reflux pump rly. respectively with intake pump SBR13, inlet valve SBR15, agitator SBR110, air compressor SBR17, flowing water Valve SBR117, intake pump SBR221, inlet valve SBR222, agitator SBR228, air compressor SBR220, intake pump The second intermediate water tank23, inlet valve The second intermediate water tank24, flowing water Valve SBR231, intake pump ASBR37, inlet valve ASBR38, agitator ASBR41, flowing water Valve ASBR44, ASBR reactor return valve 45, ASBR reactor reflux pump 47 connect.
With reference to Figure 2 shows that the schematic flow sheet of short distance nitration associating Anammox to A1 ~ A5 in the landfill leachate depth denitrification control method, specifically comprise:
A1, the water inlet of the first sbr reactor device is carried out timing by the time controller in the real-time control system, after system starts, intake pump SBR1With the water inlet pipe valve SBR1Automatically open, the mixed solution in the inlet chest injected the first sbr reactor device, when the flooding quantity of sbr reactor device reach sbr reactor device volume 50% the time, intake pump SBR1With the water inlet pipe valve SBR1Autoshutdown, water inlet end;
A2, behind the water inlet end, agitator SBR1Automatically open, the first sbr reactor device enters the anoxic denitrification process in whipping process, and the anoxic denitrification process is by online ORP sensor SBR1Monitoring, and by data collecting card in real time with the data information transfer that obtains to computer, the condition that anoxic denitrification is finished in the first sbr reactor device is that the first order derivative of ORP is by sporting greater than-25mv/min less than-30mv/min, and churning time t is greater than 2h, and air compressor SBR1 opens automatically;
A3, air compressor SBR1Automatically after opening, air is diffused in the first sbr reactor device through aeration tube and aeration head, enters the organic matter removal stage, by the pH sensor SBR1PH value in the monitoring water is by the pH determinator SBR1Data communication device is crossed data collecting card be input in the middle of the computer, data are as the real-time control parameter of organic matter removal; The condition that organic matter removal is finished in the first sbr reactor device is the pH first order derivative by just becoming negative, and aeration time t finishes the organic matter removal process, air compressor during greater than 3h SBR1And agitator SBR1Autoshutdown;
A4, the sedimentation time of the first sbr reactor device is carried out timing by the time controller in the real-time control system, begins draining after reaching 1h, and water discharge time carries out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically SBR1, the water after the processing is through rising pipe SBR1Enter the first intermediate water tank, when water displacement reach the first sbr reactor device volume 50% after, the rising pipe valve SBR1Autoshutdown;
A5, after draining finished, system entered the A1 of next cycle automatically;
With reference to Figure 3 shows that the schematic flow sheet of short distance nitration associating Anammox to B1 ~ B4 in the landfill leachate depth denitrification control method, specifically comprise:
B1, the first sbr reactor device water outlet of 60% enters the second sbr reactor device in the first intermediate water tank, and 40% enters the second intermediate water tank.The water inlet of the second sbr reactor device is carried out timing by the time controller in the real-time control system, after system starts, and intake pump SBR2With the water inlet pipe valve SBR2Automatically open, the second sbr reactor device is injected in the first sbr reactor device water outlet of 60% in the first intermediate water tank.After the first sbr reactor device water outlet of 60% in the first intermediate water tank is discharged, intake pump SBR2With the water inlet pipe valve SBR2Autoshutdown, water inlet end.Subsequently, the first sbr reactor device water outlet of the first intermediate water tank 40% enters the second intermediate water tank, and its time is carried out timing, intake pump by the time controller in the real-time control system The second intermediate water tankWith the water inlet pipe valve The second intermediate water tankAutomatically open, the second intermediate water tank is injected in the first sbr reactor device water outlet of 40% in the first intermediate water tank.After the first sbr reactor device water outlet in the first intermediate water tank is drained, intake pump The second intermediate water tankWith the water inlet pipe valve The second intermediate water tankAutoshutdown, water inlet end;
B2, behind the water inlet end, agitator SBR2And air compressor SBR2Automatically open, air is diffused in the second sbr reactor device through aeration tube and aeration head, and the second sbr reactor device enters aerobic short distance nitration process in aeration, and aerobic short distance nitration process is by online pH sensor SBR2With the DO sensor SBR2Monitor respectively pH value and dissolved oxygen concentration DO in the water, by the pH determinator SBR2With the DO determinator SBR2Data communication device is crossed data collecting card be input in the middle of the computer, data are as the real-time control parameter of short distance nitration; When the nitrated condition of finishing of the second sbr reactor device medium or short range is the pH first order derivative by just becoming negative, and aeration time t when DO is greater than 2mg/L simultaneously, finishes the short distance nitration process, air compressor greater than 6h SBR2And agitator SBR2Autoshutdown;
B3, the second sbr reactor device precipitation is carried out timing by the time controller in the real-time control system, draining after reaching 1h, the time is carried out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically SBR2, the water after the processing is through rising pipe SBR2Enter the second intermediate water tank, when water displacement reach the second sbr reactor device volume 30% after the rising pipe valve SBR2Autoshutdown;
B4, after draining finished, system entered the B1 of next cycle automatically;
With reference to Figure 4 shows that the schematic flow sheet of short distance nitration associating Anammox to C1 ~ C4 in the landfill leachate depth denitrification control method, specifically comprise:
C1, the water inlet of ASBR reactor is carried out timing by the time controller in the real-time control system, after system starts, intake pump ASBRWith the water inlet pipe valve ASBRAutomatically open, the mixed solution in the second intermediate water tank injected the second sbr reactor device, when flooding quantity reach the ASBR reactor volume 50% after, intake pump ASBRWith the water inlet pipe valve ASBRAutoshutdown, water inlet end;
C2, behind the water inlet end, agitator ASBRAutomatically open, the ASBR reactor enters the Anammox reaction in whipping process, and the Anammox reaction process is by online pH sensor ASBRMonitoring, and by data collecting card in real time with the data information transfer that obtains to computer, the condition that the Anammox reaction is finished in described ASBR reactor is the pH first order derivative by just becoming negative, and churning time t is during greater than 6h, agitator ASBRAutoshutdown;
C3, ASBR reactor precipitation is carried out timing by the time controller in the real-time control system, after reaching 1h, 50% water after processing is discharged, and 70% of water outlet is back to raw water box.First effluent recycling is carried out timing by the time controller in the real-time control system, system opens the rising pipe valve automatically ASBR, the water after the processing enters inlet chest through return line, when the effluent recycling amount reach the ASBR reactor volume 35% the time, the rising pipe valve ASBRAutoshutdown; The residue water outlet is discharged and is carried out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically ASBR, when discharge the water yield reach the ASBR reactor 15% the time, the rising pipe valve ASBRAutoshutdown;
C4, after draining finished, system entered the C1 of next cycle automatically;
Below in conjunction with example scheme described in the present invention is further introduced.Take the percolate of certain refuse landfill as research object, moved continuously 90 days, obtained stable operating performance.
Parameter setting: the first sbr reactor device: flooding time is 3min, and sedimentation time is 1h, and water discharge time is 5min; Churning time is by online ORP sensor SBR1With the pH sensor SBR1Real-Time Monitoring, ORP and pH Changing Pattern specifically can be referring to Fig. 5, after process controller obtains characterizing the signal that denitrification finishes, the beginning aeration, aeration time is by online pH sensor Real-Time Monitoring, and process controller stops aeration and stirring after obtaining characterizing the signal that organic matter removal finishes;
The second sbr reactor device: flooding time is 3min, and sedimentation time is 1h, and water discharge time is 5min, and aeration time and churning time are by online pH sensor SBR2, and DO sensor SBR2Real-Time Monitoring, process controller stop aeration and stirring after obtaining characterizing the signal of short distance nitration end; Typical pH, the Changing Pattern schematic diagram is referring to Fig. 6.
The ASBR reactor: flooding time is 6h, and sedimentation time is 1h, and water discharge time is 5min, and churning time is by online pH sensors A SBR Real-Time Monitoring, and process controller stops to stir after obtaining characterizing the signal of Anammox reaction end; Typical pH Changing Pattern schematic diagram is referring to Fig. 7.
The performance of the first sbr reactor device: the first sbr reactor device draining ratio is 0.5, operating temperature is 25 ℃, MLSS:6000 ± 500mg/L, sludge age SRT endless, influent COD are 2000 ± 200mg/L, and water outlet COD remains on 1100 ± 100mg/L, clearance is 45 ± 5%, the water inlet nitrate is 18 ± 1 mg/L, and the water outlet nitrate maintains 2 ± 0.5 mg/L, utilizes former water carbon source denitrification to remove nitric nitrogen and reaches more than 85%.
The performance of the second sbr reactor device: the second sbr reactor device draining ratio is 0.3, and operating temperature is 25 ℃, MLSS:5000 ± 500mg/L, sludge age SRT endless, influent ammonia nitrogen is 800 ± 50mg/L, and water outlet nitrite nitrogen concentration is 800 ± 50mg/L, and the short distance nitration rate reaches more than 95%.
The ASBR performance: the ASBR cycle of operation is unfixing less than 24 hours, the draining ratio is 0.5, operating temperature is 30 ℃, MLSS:7000 ± 500mg/L, influent ammonia nitrogen and nitrite nitrogen concentration are respectively 400 ± 50mg/L and 500 ± 50mg/L, and water outlet ammonia nitrogen and nitrite nitrogen are all less than 10mg/L, and clearance is all more than 95%, the water outlet nitrate is 60 ± 5mg/L, and nitrogen removal rate is more than 90%.
The performance of system: system's influent COD is at 2000 ± 200mg/L, and water outlet COD is at 1500 ± 100mg/L, clearance 25%; The TN of water inlet is 2000 ± 100 mg/L, and water outlet TN is at 60 ± 5mg/L, and clearance is more than 95%, in the situation that do not add the degree of depth removal that outer carbon source has realized total nitrogen.
Further, know-why of the present invention is specially:
The water inlet of the first sbr reactor device is the mixed solution of former water and ASBR effluent recycling liquid, carry out first anoxia stirring after the water inlet, can utilize the organic carbon source in the former water that the nitric nitrogen denitrification in the ASBR effluent recycling liquid is removed, utilize more fully simultaneously the organic carbon source in the former water, avoided the waste of carbon source.In denitrification process, denitrifying bacterium utilizes NO 2 --N is electron acceptor(EA), and organism is electron donor, with NO 2 --N is reduced to N 2, so that the oxidation state material constantly reduces in the reactor, the ORP value can constantly descend, and after denitrification finished, reactor was in anaerobic state, and ORP descends rapidly, this moment occurs unique point A.Begin aeration after denitrification finishes and only carry out organic matter removal.Contain a small amount of organism and a large amount of ammonia nitrogens in the mature leachate, and organism can produce adverse influence to follow-up Anammox reaction.Since in the first sbr reactor device, only carry out organic matter removal, in the organic matter removal reaction process, the CO of generation 2By stripping, so that pH rises, the nitration reaction of carrying out behind the organic matter removal can consume basicity descends pH, and unique point B can appear in this moment.Can judge exactly the reaction process of denitrification and organic matter removal according to above unique point, when denitrification finishes and after organic matter removal finishes, stops stirring and aeration, avoid the oxidation of ammonia nitrogen.
The water inlet of the second sbr reactor device derives from the water outlet of the first sbr reactor device, and its Main Function is that short distance nitration is carried out in the water outlet of the first sbr reactor device, for follow-up Anammox reaction provides nitrite nitrogen matrix.Begin aeration and stirring after the water inlet of the second sbr reactor device, under the associating restraining effect of high free ammonia FA and high free nitrous acid FNA, the second sbr reactor device has been realized short distance nitration, the oxidation state nitrogen of its water outlet is mainly existed with the nitrite nitrogen form, nitrate nitrogen content is extremely low, for follow-up ASBR reactor provides nitrite nitrogen matrix.Because can consuming basicity, nitration reaction make pH descend CO after the nitrated end 2The stripping effect so that pH occur to rise, therefore unique point C appears.
The water inlet of ASBR reactor is the mixed solution of the first sbr reactor device water outlet and the second sbr reactor device water outlet, and this mixed solution is mixed by the 40% and second sbr reactor device water outlet of the first sbr reactor device water outlet.Owing in the first sbr reactor device, having carried out organic matter removal, so the time organism very little on the impact of Anammox, the ASBR reactor can be kept preferably Anammox reaction.Owing to the ASBR reactor adopts continuously water inlet, so that the basicity of Anammox reaction generation is neutralized, pH remains unchanged substantially in the reactor, and unique point D this moment appearred in pH meeting slow decreasing after reaction finished.Through the Anammox reaction, nitrogens most in the former water will remove from reactor with the form of nitrogen, realize completely denitrogenation truly.
Advantage of the present invention is, whole reactive system is by in the first sbr reactor device, the second sbr reactor device and the ASBR reactor, the nitrite nitrogen that utilizes original ammonia nitrogen in the percolate and short distance nitration to produce, use the Anammox technology of autotrophic denitrification percolate is carried out the advanced nitrogen processing, further denitrogenation simultaneously refluxes the water outlet 70% of ASBR reactor, save energy not only, and need not additional carbon and just can deviate from most of total nitrogen, greatly reduced processing costs and the capital cost of sewage disposal.System's influent ammonium concentration 2000 ± 100 mg/L, water outlet ammonia nitrogen and nitrite nitrogen all are lower than 10mg/L, and approximately about 60mg/L, system's denitrification percent reaches more than 95% total nitrogen under the condition of not adding outer carbon source.
Whole system is controlled in real time by online DO, pH and ORP value sensor, accurately judges each elementary reaction terminal point, saves reaction times and the energy.Whole technique is finished by the process real-time control system, and bookkeeping is convenient, and working cost is lower, system's anti impulsion load and difficult generation sludge bulking.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. the nitrated associating Anammox of journey is characterized in that the control device of landfill leachate depth denitrification processing:
Inlet chest (2) passes through water inlet pipe SBR1(4), intake pump SBR1(3) and inlet valve SBR1(5) connect the first sbr reactor device (9); The first sbr reactor device (9) passes through rising pipe SBR1(18) and flowing water Valve SBR1(17) connect the first intermediate water tank (19); The first intermediate water tank (19) passes through water inlet pipe SBR2(34), intake pump SBR2(21) and inlet valve SBR2(22) be connected with the second sbr reactor device (74), the first intermediate water tank (19) also passes through water inlet pipe simultaneously The second intermediate water tank(35), intake pump The second intermediate water tank(23) and inlet valve The second intermediate water tank(24) be connected with the second intermediate water tank (33); The second sbr reactor device (74) passes through rising pipe SBR2(32) and flowing water Valve SBR2(31) be connected with the second intermediate water tank (33); The second intermediate water tank (33) passes through water inlet pipe ASBR(36), intake pump ASBR(37) and inlet valve ASBR(38) be connected with ASBR reactor (42); ASBR reactor (42) connects rising pipe ASBR(43) and flowing water Valve ASBR(44), ASBR reactor (42) also is connected 47 by ASBR reactor return valve (45), ASBR reactor return line (46) with ASBR reactor reflux pump simultaneously) be connected with water tank inlet (2);
The first sbr reactor device (9) inside is provided with agitator SBR1(10), pH sensor SBR1(11), DO sensor SBR1(12) and the ORP sensor SBR1(13); The first sbr reactor device (9) also connects aeration head (6), air compressor simultaneously SBR1(7) and gas meter (8); The second sbr reactor device (74) inside is provided with agitator SBR2(28), pH sensor SBR2(29) and the DO sensor SBR2(30); The second sbr reactor device (74) also connects aeration head (6), air compressor simultaneously SBR2(20) and gas meter (8); ASBR reactor (42) inside is provided with agitator ASBR(41) and the pH sensor ASBR(39); The pH sensor SBR1(11), DO sensor SBR1(12), ORP sensor SBR1(13), pH sensor SBR2(29), DO sensor SBR2(30) and the pH sensor ASBR(39) through data line respectively with the pH determinator SBR1(11), DO determinator SBR1(12), ORP determinator SBR1(13), pH determinator SBR2(29), DO determinator SBR2(30) and the pH determinator ASBR(39) be connected with the data signal input interface (49) of computer (48) after the connection, computer (48) is connected the intake pump of process controller by the data signal output interface with process controller (55) SBR1Rly., inlet valve SBR1Rly., agitator SBR1Rly., air compressor SBR1Rly., flowing water Valve SBR1Rly., intake pump SBR2Rly., inlet valve SBR2Rly., agitator SBR2Rly., air compressor SBR2Rly., intake pump The second intermediate water tankRly., inlet valve The second intermediate water tankRly., flowing water Valve SBR2Rly., intake pump ASBRRly., inlet valve ASBRRly., agitator ASBRRly., flowing water Valve ASBRRly., ASBR reactor return valve rly., ASBR reactor reflux pump rly. respectively with intake pump SBR1(3), inlet valve SBR1(5), agitator SBR1(10), air compressor SBR1(7), flowing water Valve SBR1(17), intake pump SBR2(21), inlet valve SBR2(22), agitator SBR2(28), air compressor SBR2(20), intake pump The second intermediate water tank(23), inlet valve The second intermediate water tank(24), flowing water Valve SBR2(31), intake pump ASBR(37), inlet valve ASBR(38), agitator ASBR(41), flowing water Valve ASBR(44), ASBR reactor return valve (45), ASBR reactor reflux pump (47) connect.
2. application rights requires 1 described device to carry out the control method that the nitrated associating Anammox of journey is processed landfill leachate depth denitrification, it is characterized in that step is as follows;
A1, the water inlet of the first sbr reactor device is carried out timing by the time controller in the real-time control system, after system starts, intake pump SBR1With the water inlet pipe valve SBR1Automatically open, the mixed solution in the inlet chest injected the first sbr reactor device, when the flooding quantity of sbr reactor device reach sbr reactor device volume 50% the time, intake pump SBR1With the water inlet pipe valve SBR1Autoshutdown, water inlet end;
A2, behind the water inlet end, agitator SBR1Automatically open, the first sbr reactor device enters the anoxic denitrification process in whipping process, and the anoxic denitrification process is by online ORP sensor SBR1Monitoring, and by data collecting card in real time with the data information transfer that obtains to computer, the condition that anoxic denitrification is finished in the first sbr reactor device is that the first order derivative of ORP is by sporting greater than-25mv/min less than-30mv/min, and churning time t is greater than 2h, and air compressor SBR1 opens automatically;
After A3, air compressor SBR1 opened automatically, air was diffused in the first sbr reactor device through aeration tube and aeration head, enters the organic matter removal stage, by the pH sensor SBR1PH value in the monitoring water is by the pH determinator SBR1Data communication device is crossed data collecting card be input in the middle of the computer, data are as the real-time control parameter of organic matter removal; The condition that organic matter removal is finished in the first sbr reactor device is the pH first order derivative by just becoming negative, and aeration time t finishes the organic matter removal process, air compressor during greater than 3h SBR1And agitator SBR1Autoshutdown;
A4, the sedimentation time of the first sbr reactor device is carried out timing by the time controller in the real-time control system, begins draining after reaching 1h, and water discharge time carries out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically SBR1, the water after the processing is through rising pipe SBR1Enter the first intermediate water tank, when water displacement reach the first sbr reactor device volume 50% after, the rising pipe valve SBR1Autoshutdown;
A5, after draining finished, system entered the A1 of next cycle automatically;
B1, the first sbr reactor device water outlet of 60% enters the second sbr reactor device in the first intermediate water tank, and 40% enters the second intermediate water tank; The water inlet of the second sbr reactor device is carried out timing by the time controller in the real-time control system, after system starts, and intake pump SBR2With the water inlet pipe valve SBR2Automatically open, the second sbr reactor device is injected in the first sbr reactor device water outlet of 60% in the first intermediate water tank; After the first sbr reactor device water outlet of 60% in the first intermediate water tank is discharged, intake pump SBR2With the water inlet pipe valve SBR2Autoshutdown, water inlet end; Subsequently, the first sbr reactor device water outlet of the first intermediate water tank 40% enters the second intermediate water tank, and its time is carried out timing, intake pump by the time controller in the real-time control system The second intermediate water tankWith the water inlet pipe valve The second intermediate water tankAutomatically open, the second intermediate water tank is injected in the first sbr reactor device water outlet of 40% in the first intermediate water tank; After the first sbr reactor device water outlet in the first intermediate water tank is drained, intake pump The second intermediate water tankWith the water inlet pipe valve The second intermediate water tankAutoshutdown, water inlet end;
B2, behind the water inlet end, agitator SBR2And air compressor SBR2Automatically open, air is diffused in the second sbr reactor device through aeration tube and aeration head, and the second sbr reactor device enters aerobic short distance nitration process in aeration, and aerobic short distance nitration process is by online pH sensor SBR2With the DO sensor SBR2Monitor respectively pH value and dissolved oxygen concentration DO in the water, by the pH determinator SBR2With the DO determinator SBR2Data communication device is crossed data collecting card be input in the middle of the computer, data are as the real-time control parameter of short distance nitration; When the nitrated condition of finishing of the second sbr reactor device medium or short range is the pH first order derivative by just becoming negative, and aeration time t when DO is greater than 2mg/L simultaneously, finishes the short distance nitration process, air compressor greater than 6h SBR2And agitator SBR2Autoshutdown;
B3, the second sbr reactor device precipitation is carried out timing by the time controller in the real-time control system, draining after reaching 1h, the time is carried out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically SBR2, the water after the processing is through rising pipe SBR2Enter the second intermediate water tank, when water displacement reach the second sbr reactor device volume 30% after the rising pipe valve SBR2Autoshutdown;
B4, after draining finished, system entered the B1 of next cycle automatically;
C1, the water inlet of ASBR reactor is carried out timing by the time controller in the real-time control system, after system starts, intake pump ASBRWith the water inlet pipe valve ASBRAutomatically open, the mixed solution in the second intermediate water tank injected the second sbr reactor device, when flooding quantity reach the ASBR reactor volume 50% after, intake pump ASBRWith the water inlet pipe valve ASBRAutoshutdown, water inlet end;
C2, behind the water inlet end, agitator ASBRAutomatically open, the ASBR reactor enters the Anammox reaction in whipping process, and the Anammox reaction process is by online pH sensor ASBRMonitoring, and by data collecting card in real time with the data information transfer that obtains to computer, the condition that the Anammox reaction is finished in described ASBR reactor is the pH first order derivative by just becoming negative, and churning time t is during greater than 6h, agitator ASBRAutoshutdown;
C3, ASBR reactor precipitation is carried out timing by the time controller in the real-time control system, after reaching 1h, 50% water after processing is discharged, and 70% of water outlet is back to raw water box; First effluent recycling is carried out timing by the time controller in the real-time control system, system opens the rising pipe valve automatically ASBR, the water after the processing enters inlet chest through return line, when the effluent recycling amount reach the ASBR reactor volume 35% the time, the rising pipe valve ASBRAutoshutdown; The residue water outlet is discharged and is carried out timing by the time controller in the real-time control system, and system opens the rising pipe valve automatically ASBR, when discharge the water yield reach the ASBR reactor 15% the time, the rising pipe valve ASBRAutoshutdown;
C4, after draining finished, system entered the C1 of next cycle automatically.
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