CN203229417U - Biological denitrification device - Google Patents
Biological denitrification device Download PDFInfo
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- CN203229417U CN203229417U CN 201320247515 CN201320247515U CN203229417U CN 203229417 U CN203229417 U CN 203229417U CN 201320247515 CN201320247515 CN 201320247515 CN 201320247515 U CN201320247515 U CN 201320247515U CN 203229417 U CN203229417 U CN 203229417U
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Abstract
The utility model discloses a biological denitrification device. A liquid level meter sensor, a DO electrode, a pH electrode, an ORP electrode, an EC electrode and an ammonia nitrogen electrode are arranged in SBR and are all connected with a PLC automatic control system; the PLC automatic control system is provided with two control modes adopting a field touch control screen and a remote computer; the PLC automatic control system controls the SBR to automatically rotate in six stages of water feed, reaction, stirring, sedimentation, drainage and laying aside, and controls the SBR to operate in a continuous aeration or intermittent aeration mode in the reaction stage; a stirring paddle is arranged in the SBR, and a microporous aeration disc is arranged at the center of the bottom; the SBR is externally wrapped by a thermal insulation sleeve and is connected with a constant-temperature water bath tank through a water bath circulating pump; an air compressor is connected with the microporous aeration disc; the compressed air is provided for the online electrode cleaning of ammonia nitrogen; and the yielding water sequentially passes through a yielding water liquid level valve, a pipeline filter and a main yielding water electric valve.
Description
Technical field
The utility model belongs to low C/N ratio, high-concentration ammonia nitrogenous wastewater bio-denitrification technology field, be specifically related to a kind of short distance nitration-anaerobic ammoxidation integral type SBR nitrogen rejection facility, jointly control under the PLC system control of pattern at operation dissolved oxygen-ammonia nitrogen or pH-ammonia nitrogen, have increasingly automated level, go for comprising a series of low C/N ratio of sludge digestion liquid, coking chemical waste water, nitrogen fertilizer production waste water, pharmacy waste water etc., the biological denitrificaion processing of high-concentration ammonia nitrogenous wastewater.
Background technology
Raising along with social development and resident living level, the subject matter that current China water surrounding faces has been polluted by traditional oxygen consumption and has been changed to the eutrophication direction, and because ammonia nitrogen is that to consume water body oxygen be the material that causes body eutrophication, so ammonia nitrogen is being played the part of important role in China's water pollution origin cause of formation transition process.Based on this, in China " 12 " planning outline, clearly increase the restrictive water pollutant of ammonia nitrogen newly and reduced discharging index, be the important difficult problem that China environmental protection faces so how to cut down the ammonia nitrogen discharging.
Current sewage water denitrification is still based on the biological nitration/denitrification of routine, though compare physics, the chemical method denitrogenation has cost advantage, but still exist efficient low, energy consumption material consumption height, shortcomings such as surplus sludge volume is big [Fux, C.and H.Siegrist.2004.Nitrogen removal from sludge digester liquids by nitrification/denitrification or partial nitritation/anammox:environmental and economical considerations[J] .Water Science and Technology, 50 (10): 19-26].Along with to the going deep into of nitrogen transformation approach understanding, the inherent defect that exists at traditional denitrification process and develop and a series of novel denitrification process.Anammox technology (Anaerobic Ammonium Oxidation, Anammox) result from [the Mulder nineties in last century, A., A.A.Vandegraaf, L.A.Robertson, et al.1995.Anaerobic ammonium oxidation discovered in a denitrifying fluidized bed reactor[J] .Fems Microbiology Ecology, 16 (3): 177-183], be the most promising new bio denitride technology at present, its reaction can be expressed as:
Because the Anammox reaction is with NH
4 +-N and NO
2 --N is as substrate, and NO in the general waste water
2 --N content is very low, so realize NO by short distance nitration
2 --N accumulation is the essential condition of Anammox.Contrast traditional denitrogenation method, the short distance nitration-anaerobic ammoxidation combination process can be saved about 60% aeration rate, do not need additional carbon fully, sludge yield is low, be particularly suitable for handling low C/N ratio, high ammonia-nitrogen wastewater [Fux C, Boehler M, et al.Biological treatment of ammonium-rich wastewater by partial nitritation and subsequent anaerobic ammonium oxidation (anammox) in a pilot plant[J] .Journal of Biotechnology, 2002,99 (3): 295-306].For short distance nitration-anaerobic ammoxidation integral type combination process, mainly contain CANON, OLAND, DEMON, SNAP etc., mainly contain Sharon-Anammox technology for split type technology.
Yet the reactor of above-mentioned technology is many based on blodisc, complete mixing reactor (CSTR) etc., and owing to its hydraulic load, hydraulic detention time all are set, thereby effluent quality is subjected to the influence of influent quality fluctuation bigger.When the influent ammonia nitrogen load reduces, NH in the former water
4 +-N is fallen by completely consumed prematurely, will cause NO
2 --N is because lacking NH
4 +-N carries out the Anammox reaction and accumulation occurs, thereby the Anammox bacterium is produced restraining effect, also may be at NH
4 +-N completely consumed causes the DO of system to raise later on, thereby also can produce restraining effect to the Anammox bacterium.After the influent ammonia nitrogen load increases, in original hydraulic detention time, have the NH of considerable part
4 +-N remains and enters in the water outlet, causes the denitrification effect variation of entire system.Particularly when handling object and be trade effluent, can be violent because of the ammonia nitrogen loading fluctuation, and existing technology is brought serious impact load, make the normal operation of system face the danger of collapse.Therefore, poor at the pre-existing reactors impact resistance, the shortcoming that is of limited application needs to propose the more efficiently nitrogen rejection facility that can tackle water quality, the complicated changing conditions of the water yield.
The utility model content
The purpose of this utility model provides a kind of short distance nitration-anaerobic ammoxidation integral type SBR nitrogen rejection facility, to improve the defective that exists in the known technology.
For achieving the above object, the utility model provides a kind of biological denitrification apparatus, and it comprises:
Be provided with intake pump (1.1) and plug-flow pump in the water tank (1), SBR is a uncovered cylinder shape pond body, and top is provided with upflow tube, and the bottom is provided with blow-down pipe, and the place sets out penstock at the side different heights;
Be provided with liquidometer sensor (5), DO electrode (6.1), pH electrode (6.2), ORP electrode (6.3), EC electrode (6.4) and ammonia nitrogen electrode (7) among the SBR, all be connected to PLC automatic control system (9) by transmitter (6,7);
The PLC robot control system(RCS) is provided with that on-the-spot touch screen (8) is controlled and remote computer (10), with the execute-in-place in the automatic operating process and remote monitoring;
Be provided with in the SBR can speed governing stirring rake (3.1), be provided with micro-pore aeration dish (3.2) in the center, bottom, at SBR outer wrap muff (2.2) and link to each other with constant temperature water bath (2) by water-bath recycle pump (2.1);
Air compressor (4) enters micro-pore aeration dish (3.2) by aeration reducing valve (4.1), aeration electromagnetic valve (4.2) and aeration under meter (4.3) successively; Pressurized air provides pressurized air by air purge reducing valve (4.4), air purge magnetic valve (4.5) and air purge under meter (4.6) for ammonia nitrogen cleans at line electrode successively;
Water outlet liquid level valve (3.4), line strainer (3.5) and total water outlet electrically operated valve (3.6) are passed through in water outlet successively.
Described biological denitrification apparatus, wherein the PLC Controlling System is formed by electrically connecting between PLC controller, the online Water Test Kits of multiparameter, ammonia nitrogen on line analyzer, touch screen panel, the computer.
Described biological denitrification apparatus, wherein the online Water Test Kits of multiparameter comprises pH electrode, ORP electrode, dissolved oxygen electrode, conductivity electrode and transmitter; The ammonia nitrogen on line analyzer comprises that ammonia nitrogen is at line electrode, transmitter.
Described biological denitrification apparatus, wherein PLC automatic controlling system SBR is water inlet, reaction, stirring, precipitation, draining and changeing from driving wheel between idle totally 6 stages; Controlling SBR simultaneously moves with continuous aeration or intermittent aeration mode in step of reaction.
Biological denitrification apparatus of the present utility model is compared with existing short distance nitration-anaerobic ammoxidation combined denitrification technology, it is advantageous that:
(1) adopt DO, pH, ammonia nitrogen etc. multiple at line electrode, monitor the processing parameter among the SBR in real time, by PLC system control overall operation, the level of automation height, running maintenance is easy;
(2) combine the control of process control and terminal point, tackle influent ammonia nitrogen fluctuation of load situation flexibly, the impact load of anti-the ammonia nitrogen guarantees stable effluent quality;
(3) adopt NH
4 +The certain ammonia nitrogen of the strict control of-N electrode is retained concentration, can avoid NO
2 --N accumulation is suppressed phenomenon and is taken place thereby can effectively control the Anammox bacterium, is conducive to the stable of long-time running.
Description of drawings
Fig. 1 is the structural representation of short distance nitration-anaerobic ammoxidation integral type SBR nitrogen rejection facility of the present utility model.
Fig. 2 is that dissolved oxygen-ammonia nitrogen of the present utility model jointly controls under the pattern, and pH, DO, EC and ammonia nitrogen are in the line electrode monitoring result in the single cycle of short distance nitration-anaerobic ammoxidation integral type SBR device.
Fig. 3 is that dissolved oxygen-ammonia nitrogen of the present utility model jointly controls under the pattern, NH in the single cycle of short distance nitration-anaerobic ammoxidation integral type SBR device
4 +-N, NO
3 --N, NO
2 --N and TN changing conditions.
Fig. 4 is that pH-ammonia nitrogen of the present utility model jointly controls under the pattern, the pH fluctuation span of control limit of control value of short distance nitration-anaerobic ammoxidation integral type SBR device.
Fig. 5 is that pH-ammonia nitrogen of the present utility model jointly controls under the pattern, and pH, DO, EC and ammonia nitrogen are in the line electrode monitoring result in the single cycle of short distance nitration-anaerobic ammoxidation integral type SBR device.
Fig. 6 is that pH-ammonia nitrogen of the present utility model jointly controls under the pattern, NH in the single cycle of short distance nitration-anaerobic ammoxidation integral type SBR device
4 +-N, NO
3 --N, NO
2 --N and TN changing conditions.
Primary clustering sign flag explanation in the accompanying drawing:
The 1-water tank, 1.1-intake pump, 2-constant temperature water bath, 2.1-the water-bath recycle pump, 2.2-SBR muff, 3-SBR main body reactor, 3.1-stirring rake, 3.2-micro-pore aeration dish, 3.3-aeration plate cleaning agent adds entrance, 3.4-flowing water Valve, 3.5-line strainer, the total water outlet electrically operated valve of 3.6-, the 4-air compressor, 4.1-aeration reducing valve, 4.2-aeration electromagnetic valve, 4.3-the aeration under meter, 4.4-air purge reducing valve, 4.5-air purge magnetic valve, 4.6-air purge under meter, the 5-liquidometer, the online Water Test Kits transmitter of 6-WTW multiparameter, 6.1-DO is at line electrode, 6.2-pH at line electrode, 6.3-ORP at line electrode, 6.4-EC is at line electrode, 7-grace Si Haosi ammonia nitrogen is at the line electrode transmitter, 7.1-ammonia nitrogen is at line electrode, 8-PLC system contact panel, 9-PLC system housing, 10-remote control computer.
Embodiment
The utility model proposes the short distance nitration-anaerobic ammoxidation integral type SBR nitrogen rejection facility that a cover utilizes the PLC Controlling System, two kinds of PLC system operation dissolved oxygen-ammonia nitrogen or pH-ammonia nitrogens are different jointly controls pattern, finally be implemented under the former water ammonia nitrogen loading big ups and downs situation, still can realize purpose efficient, low-consumption biological denitrification.
The purpose of this utility model is achieved through the following technical solutions:
Short distance nitration-anaerobic ammoxidation integral type SBR nitrogen rejection facility is characterized in that: be provided with water tank, SBR main body reactor, PLC Controlling System, auxiliary facility has water bath heat preservation equipment and aerator.
Water tank is connected with the SBR main reactor by the intake pump that is subjected to PLC control; Be provided with liquidometer in the SBR, liquidometer with the real-time level data transmission to the PLC system, after judging by the PLC logic, the stopping of feedback control intake pump; SBR is provided with the stirring rake by the control start and stop of PLC system; SBR inside is provided with DO, pH, ORP, EC and ammonia nitrogen at line electrode, obtains data in real time and imports the PLC Controlling System into, is used for storage and monitoring SBR operation conditions; Be provided with the micro-pore aeration dish in the SBR bottom, air compressor is connected with the micro-pore aeration dish by gas pressure reducer, gas meter successively; The outside water-bath flexible pipe that twines of SBR, and in flexible pipe outside parcel insulating cotton, flexible pipe is connected with constant temperature water bath, by the start and stop of PLC system control water-bath recycle pump, and then the temperature of reaction of control SBR; The SBR height is provided with a plurality of draining liquid level valves, link to each other by a vertical drain, according to liquid level difference in the SBR, corresponding water discharging valve is opened in selection, pipe laying strainer and electric control valve on main discharge pipe, and then control the SBR draining by the switching of PLC system control electric control valve.
● utilize said apparatus, by moving the PLC system that dissolved oxygen-ammonia nitrogen jointly controls pattern, control realizes the method for short distance nitration-anaerobic ammoxidation integral type denitrogenation, it is characterized in that may further comprise the steps:
(1) behind the last round of end cycle, stirring rake is in opened condition.After the new round cycle began, PLC control intake pump was opened, and liquid level raises gradually among the SBR, after liquidometer detects the high liquid level of target, and, PLC system control intake pump stops.
(2) after intake pump stopped, aerating system started, and by DO concentration in the under meter control SBR, guaranteed NO among the SBR
2 --N concentration is at 10.00mgL
-1Below.Carry out in the time of along with short distance nitration and two processes of Anammox, the ammonia nitrogen of monitoring the ammonia nitrogen concentration variation among the SBR in real time continues to reduce at the line electrode reading.
(3) the retention concentration of control ammonia nitrogen is 30.00mgL
-1, when ammonia nitrogen drops to 30.00mgL at the line electrode reading
-1The time, PLC control aerating system stops, and DO concentration can be down to 0.00mgL rapidly in the system
-1, SBR enters agitation phases.In case of necessity, can before precipitate phase finishes, increase the air stripping measure of big flow, guarantee that mud has good settleability.
(4) after the agitation phases duration finishes, PLC control stirring rake quits work, and SBR enters precipitate phase, and sludge settling is realized mud-water separation in the SBR bottom.
(5) after the precipitation duration finishes, PLC control opening water discharge electrically operated valve, SBR enters bleeding stage.Liquid level reduces fast, and after reaching the low liquid level of target, PLC control draining electrically operated valve is closed.Simultaneously, stirring rake starts, and SBR enters the idle stage.According to pending water yield situation, set idle duration, etc. the beginning in next round cycle.
● utilize said apparatus, by moving the PLC system that the pH-ammonia nitrogen jointly controls pattern, control realizes the method for short distance nitration-anaerobic ammoxidation integral type denitrogenation, it is characterized in that may further comprise the steps:
(1) behind the last round of end cycle, stirring rake is in opened condition.After the new round cycle began, PLC control intake pump was opened, and liquid level raises gradually among the SBR, and after liquidometer detected the high liquid level of target, PLC system control intake pump stopped.
(2) after intake pump stopped, aerating system started, by under meter control SBR dissolved oxygen concentration.At aeration phase, NH
4 +The short distance nitration reaction takes place in-N, causes pH constantly to reduce, decrease by the Δ pH1 of setting as pH after, PLC control aerating system stops, DO concentration is down to 0.00mgL rapidly
-1, next carry out the Anammox reaction separately.The Anammox reaction is because consuming H
+And cause pH to go up, and when pH amplification reaches the Δ pH2 of setting, PLC control aerating system is opened again, is SBR aeration aerating again, and so circulation is gone down.During this time, along with hocketing of short distance nitration and two reaction process of Anammox, ammonia nitrogen constantly is consumed among the SBR, and ammonia nitrogen continues to reduce at the line electrode reading.
(3) the retention concentration of control ammonia nitrogen is 30.00mgL
-1, when ammonia nitrogen drops to 30.00mgL at the line electrode reading
-1The time, PLC control aerating system stops, and SBR enters agitation phases.In case of necessity, can before precipitate phase finishes, increase the measure of mass flow air stripping, guarantee that mud has good settleability.
(4) after the agitation phases duration finishes, PLC control stirring rake quits work, and SBR enters precipitate phase, and sludge settling is realized mud-water separation in the SBR bottom.
(5) after the precipitation duration finishes, PLC control opening water discharge electrically operated valve, SBR enters bleeding stage.Liquid level reduces fast, and after reaching the target low-water level, PLC control draining electrically operated valve is closed.Simultaneously, stirring rake is opened, and SBR enters the idle stage, according to pending water yield situation, sets idle duration, waits for the beginning in next round cycle.
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, short distance nitration-anaerobic ammoxidation integral type SBR nitrogen rejection facility mainly is made up of water tank, SBR main body reactor, PLC Controlling System, and auxiliary facility has the water bath heat preservation measure.Water tank volume 160L, (Φ * H), SBR main reactor cubic capacity 125L is of a size of 40cm * 100cm (Φ * H), be provided with outlet valve every 16cm on the SBR height to be of a size of 60cm * 70cm.
The PLC controller is Siemens S7-300 series of PLC controller, is provided with computer remote simultaneously and controls with on-the-spot contact panel and control dual mode, is convenient to the monitoring of automatic operating process medium-long range and the field adjustable of device.The online electrode system of multiparameter is German WTW brand, and ammonia nitrogen is German grace Si Haosi (Endress+Hauser) brand at line electrode.
In the present embodiment, the digested sludge dehydration filtrate of certain large-scale wastewater treatment plant is adopted in water inlet, and main water-quality guideline is as shown in table 1.Employing adds NH
4Cl and NaHCO
3Mode improves ammonia nitrogen and the basicity level of water inlet.
Table 1 digested sludge dehydration filtrate water quality (unit: mgL
-1, except pH)
| pH | COD | NH 4 +-N | NO 3 --N | NO 2 --N | Basicity |
| 7.90±0.20 | 130.20±41.00 | 154.00±12.20 | 2.80±2.50 | 3.20±5.20 | 1030.40±173.30 |
1, the short distance nitration-anaerobic ammoxidation integral type SBR denitrogenation that jointly controls of dissolved oxygen-ammonia nitrogen
In water inlet, add NH
4Cl and NaHCO
3, influent ammonium concentration is increased to 700.00mgL
-1PLC Controlling System operation dissolved oxygen-ammonia nitrogen jointly controls pattern.Beginning new round week after date, at first stirring rake starts, and then intake pump is opened, and finishes the water inlet of SBR in the short period of time.Aerating system is opened subsequently, regulates the aeration flow, and DO concentration is 0.20～0.30mgL among the control SBR
-1, under the combined action of ammonia oxidation bacteria (AOB) and anaerobic ammonia oxidizing bacteria, ammonia nitrogen concentration reduces gradually, and pH reduces gradually, NO
2 --N maintains 8.00mgL all the time
-1Below.When ammonia nitrogen concentration is reduced to 30.00mgL gradually
-1The retention concentration value after, aerating system quits work, SBR enters the anoxia stirring stage, DO is reduced to 0.00mgL rapidly
-1Generate NO
2 --N and remaining NH
4 +-N continues to take place the Anammox reaction, makes to contain NO in the water outlet hardly
2 --N, the N of generation
2Fully loss is gone out under stirring action, and the effect of settling of mud is not because there being gas to generate variation.After agitation phases was finished, SBR entered precipitate phase, and mud sinks to the SBR bottom rapidly, the upper liquid clarification.Wet-pit is opened subsequently, and 20L water is discharged SBR.Stirring rake was opened after draining finished, and SBR enters the idle stage.After the idle stage finished, intake pump was opened again, and SBR begins the new round cycle.Fig. 2 has provided interior pH, DO of single cycle of SBR, ORP, EC and ammonia nitrogen totally four kinds of output results at line electrode.Fig. 3 has provided the NH in the single cycle
4 +-N, NO
3 --N, NO
2 -The changing conditions of-N and TN.Under dissolved oxygen-ammonia nitrogen jointly controlled pattern, the hydraulic detention time of SBR was 1.59d, and the influent ammonia nitrogen load is 0.44kgNH
4 +-Nm
-3D
-1, ammonia nitrogen removal frank is 96.50%, nitrogen removal rate has shown higher denitrification effect up to 93.10%, simultaneously NO
2 --N is stabilized in 8.00mgL
-1Below, thereby avoided it that anaerobic ammonia oxidizing bacteria is produced restraining effect.
2, the short distance nitration-anaerobic ammoxidation integral type SBR denitrogenation that jointly controls of pH-ammonia nitrogen
In water inlet, add NH
4Cl and NaHCO
3, influent ammonium concentration is increased to 250.00mgL
-1PLC Controlling System operation pH-ammonia nitrogen jointly controls pattern.
Beginning new round week after date, at first stirring rake starts, and then intake pump is opened, and finishes the water inlet of SBR in the short period of time.Aerating system is opened subsequently, regulates the aeration flow, and DO concentration is 0.10～0.20mgL among the control SBR
-1After aerating system began, under the combined action of ammonia oxidation bacteria (AOB) and anaerobic ammonia oxidizing bacteria, ammonia nitrogen concentration reduced gradually, but pH also reduces gradually simultaneously.Utilize the fluctuation of pH to control the aerating system start and stop as shown in Figure 4, the fall of pH and intrasystem NO
2 --N accumulation situation is directly proportional, and the pH range of decrease that is set in aeration phase is Δ pH1, at the aerating system NO of the finish time
2 --N concentration on average has only 4.14mgL
-1After Δ pH1 reached, aerating system stopped, and DO drops to 0.00mgL at short notice rapidly
-1, SBR enters the anoxia stirring stage, and the short distance nitration reaction stops, and has only the Anammox reaction to carry out separately, the NO of accumulation before consuming
2 --N, rising amplitude and the NO of pH slight rebound can appear, in pH simultaneously
2 -The consumption of-N is proportional, and the pH amplification that is set in the anoxia stirring stage is Δ pH2, can guarantee the NO that accumulates
2 --N is consumed.After Δ pH2 reached, aerating system started again, and so circulation goes down to be reduced to the 30.00mgL of setting until ammonia nitrogen concentration
-1Retain concentration.When ammonia nitrogen electrode detector ammonia nitrogen concentration in the SBR drops to 30.00mgL
-1The time, aerating system quits work, and SBR enters the anoxia stirring stage, and DO reduces 0.00mgL rapidly
-1The NO that generates
2 --N and remaining NH
4 +-N continues to take place the Anammox reaction, makes to contain NO in the water outlet hardly
2 --N, the N of generation
2Fully loss is gone out under stirring action, and the effect of settling of mud is not because there being gas to generate variation.After agitation phases was finished, SBR entered precipitate phase, and mud sinks to the SBR bottom rapidly, the upper liquid clarification.Wet-pit is opened subsequently, and 20L water is discharged SBR.Stirring rake was opened after draining finished, and SBR enters the idle stage, and after the idle stage finished, intake pump was opened again, and SBR begins the new round cycle.Fig. 5 has provided interior pH, DO of single cycle of SBR, ORP, EC and ammonia nitrogen totally four kinds of results at line electrode, and the fluctuation of pH variation causes other electrode readings also to become fluctuation to change as can be seen.Fig. 6 has provided the NH in the single cycle
4 +-N, NO
3 --N, NO
2 -The changing conditions of-N and TN.Jointly control under the pattern at the pH-ammonia nitrogen, the hydraulic detention time of SBR is 1.86d, and the influent ammonia nitrogen load is 0.14kgNh
4 +-Nm
-3D
-1, the ammonia nitrogen rate of going out is 89.60%, nitrogen removal rate is 86.60%, has shown higher denitrification effect, simultaneously NO
2 --N is stabilized in 5.00mgL
-1Below.
Claims (3)
1. a biological denitrification apparatus is characterized in that, comprising:
Be provided with intake pump (1.1) and plug-flow pump in the water tank (1), SBR is a uncovered cylinder shape pond body, and top is provided with upflow tube, and the bottom is provided with blow-down pipe, and the place sets out penstock at the side different heights;
Be provided with liquidometer sensor (5), DO electrode (6.1), pH electrode (6.2), ORP electrode (6.3), EC electrode (6.4) and ammonia nitrogen electrode (7) among the SBR, all be connected to PLC automatic control system (9) by transmitter (6,7);
The PLC robot control system(RCS) is provided with that on-the-spot touch screen (8) is controlled and remote computer (10), with the execute-in-place in the automatic operating process and remote monitoring;
Be provided with in the SBR can speed governing stirring rake (3.1), be provided with micro-pore aeration dish (3.2) in the center, bottom, at SBR outer wrap muff (2.2) and link to each other with constant temperature water bath (2) by water-bath recycle pump (2.1);
Air compressor (4) enters micro-pore aeration dish (3.2) by aeration reducing valve (4.1), aeration electromagnetic valve (4.2) and aeration under meter (4.3) successively; Pressurized air provides pressurized air by air purge reducing valve (4.4), air purge magnetic valve (4.5) and air purge under meter (4.6) for ammonia nitrogen cleans at line electrode successively;
Water outlet liquid level valve (3.4), line strainer (3.5) and total water outlet electrically operated valve (3.6) are passed through in water outlet successively.
2. biological denitrification apparatus according to claim 1, it is characterized in that: the PLC automatic control system is formed by electrically connecting between PLC controller, the online Water Test Kits of multiparameter, ammonia nitrogen on line analyzer, touch screen panel, the computer.
3. biological denitrification apparatus according to claim 2 is characterized in that:
PLC automatic controlling system SBR is water inlet, reaction, stirring, precipitation, draining and changeing from driving wheel between idle totally 6 stages; Controlling SBR simultaneously moves with continuous aeration or intermittent aeration mode in step of reaction;
The online Water Test Kits of multiparameter comprises pH electrode, ORP electrode, dissolved oxygen electrode, conductivity electrode and transmitter;
The ammonia nitrogen on line analyzer comprises that ammonia nitrogen is at line electrode, transmitter.
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| CN 201320247515 CN203229417U (en) | 2013-05-09 | 2013-05-09 | Biological denitrification device |
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214092A (en) * | 2013-05-09 | 2013-07-24 | 中国科学院生态环境研究中心 | Biological denitrification device |
| CN104609557A (en) * | 2015-01-28 | 2015-05-13 | 东北电力大学 | Method for treating slaughter wastewater by using sequencing batch reactor (SBR) activated sludge process |
| CN105923750A (en) * | 2016-05-03 | 2016-09-07 | 山东大学 | Device for mixed activated sludge autotrophic nitrogen removal process |
| CN113321301A (en) * | 2021-06-09 | 2021-08-31 | 重庆阁林环保科技有限公司 | Self-adaptive integrated sewage treatment system and adjusting method |
| CN113666486A (en) * | 2021-07-19 | 2021-11-19 | 北京工业大学 | Sewage treatment SBR process control expert system based on multi-mode optimization |
-
2013
- 2013-05-09 CN CN 201320247515 patent/CN203229417U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214092A (en) * | 2013-05-09 | 2013-07-24 | 中国科学院生态环境研究中心 | Biological denitrification device |
| CN103214092B (en) * | 2013-05-09 | 2018-05-08 | 中国科学院生态环境研究中心 | A kind of biological denitrification apparatus |
| CN104609557A (en) * | 2015-01-28 | 2015-05-13 | 东北电力大学 | Method for treating slaughter wastewater by using sequencing batch reactor (SBR) activated sludge process |
| CN105923750A (en) * | 2016-05-03 | 2016-09-07 | 山东大学 | Device for mixed activated sludge autotrophic nitrogen removal process |
| CN113321301A (en) * | 2021-06-09 | 2021-08-31 | 重庆阁林环保科技有限公司 | Self-adaptive integrated sewage treatment system and adjusting method |
| CN113666486A (en) * | 2021-07-19 | 2021-11-19 | 北京工业大学 | Sewage treatment SBR process control expert system based on multi-mode optimization |
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