CN103613194A - Divisional water feed type D-A<2>0 sewage treatment device - Google Patents
Divisional water feed type D-A<2>0 sewage treatment device Download PDFInfo
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- CN103613194A CN103613194A CN201310596159.XA CN201310596159A CN103613194A CN 103613194 A CN103613194 A CN 103613194A CN 201310596159 A CN201310596159 A CN 201310596159A CN 103613194 A CN103613194 A CN 103613194A
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Abstract
The invention provides a divisional water feed type D-A<2>0 sewage treatment device. According to the sewage treatment device, two independent phases of sludge/nitration liquid reflux systems are designed, wherein when water is fed normally and phosphorus release and denitrification are maintained in one phase, excessive phosphorus release and sufficient denitrification are performed in the other phase at rest, due to excessive oxygen deficiency; phosphorus-accumulating bacteria in the system definitely absorb phosphorus in an aerobic zone due to the excessive phosphorus release of the phosphorus-accumulating bacteria in an anaerobic zone; ultimately, a remarkable phosphorus removal function of the system is realized by means of discharging residual sludge. By using the sewage treatment device, the problem that the efficiencies of denitrification and phosphorus removal are difficult to further enhance in the A<2>0 sewage treatment device is solved; in addition, the quality of effluent treated by the treatment device is stabilized between the first class A criteria and surface water environment quality V standard.
Description
Technical field
The invention belongs to technical field of sewage, relate in particular to a kind of subregion inlet type D-A
2o waste disposal plant.
Background technology
Existing A
2/ O waste disposal plant comprises anaerobic pond, anoxic pond, Aerobic Pond and settling tank, and this device can not only effectively be removed the organism in sewage, also can synchronous denitrification dephosphorizing.
But, existing A
2/ O waste disposal plant also exists denitrogenation dephosphorizing efficiency to be difficult to the problem further significantly promoting, and its major cause is: (1) exists the carbon source race problem of denitrogenation and dephosphorization; (2) exist microorganism to release phosphorus and inhale the lower problem of phosphorus ability.Achievement in research in the past shows, A
2in/O technique, the denitrification of anoxic section is the main path of denitrogenating, and its key is in anoxic section, whether there is sufficient carbon source; Meanwhile, polyP bacteria also needs to absorb easily biodegradable organics in anaerobism section and releases phosphorus reaction, can be in aerobic section excessive suction phosphorus and reach the object of dephosphorization.Carbon source in water inlet lacks, i.e. water inlet for low C/N than time, A
2/ O technique denitrogenation dephosphorizing carbon source race problem is particularly evident.From technical process, polyP bacteria almost consumes into the easy organism of degraded of the overwhelming majority in water in the phosphorus effect of releasing of anaerobism section, thus anoxic section only surplus a small amount of at a slow speed or the organism of difficult degradation is difficult to meet denitrification denitrogenation effect and cause denitrification effect poor.From same anaerobism (anoxic) section, denitrifying bacteria has precedence over polyP bacteria and utilizes organic carbon source to carry out denitrogenation, thereby cause polyP bacteria to release phosphorus effect, reduces, and its result must cause the suction phosphorus effect of aerobic section not remarkable.Therefore, existing A
2the carbon source race problem of/O technique becomes the restrictive factor of this technique denitrogenation dephosphorizing.
In addition existing A,
2/ O technique denitrogenation dephosphorizing and reflux ratio are closely related.Too low reflux ratio difficulty has desirable denitrogenation dephosphorizing effect, but too high reflux ratio is also detested because causing, (lacking) oxygen section DO excessive concentration is difficult to be had higher denitrification effect and release phosphorus ability.Therefore, existing A
2/ O technique is all controlled mud, muddy water mixed solution reflux ratio in lower value, and it releases phosphorus and suction phosphorus ability is less.
Summary of the invention
The object of the present invention is to provide a kind of subregion inlet type D-A
2o waste disposal plant, is intended to solve existing A
2the limited problem of denitrogenation dephosphorizing efficiency in O waste disposal plant.
The present invention is achieved in that a kind of subregion inlet type D-A
2o waste disposal plant, comprises sewage lagoon, and Aerobic Pond, and the secondary sedimentation basins being connected with Aerobic Pond water side, also comprise the first anaerobic pond, the first anoxic pond, the second anaerobic pond and the second anoxic pond; Wherein, described sewage lagoon is connected by raw water pipeline with the first anaerobic pond, the first anoxic pond, the second anaerobic pond and the second anoxic pond respectively, and on raw water pipeline, is equipped with inlet control device described in each; Described the first anaerobic pond, the first anoxic pond and Aerobic Pond connect by pipeline successively; Described the second anaerobic pond, the second anoxic pond and Aerobic Pond connect by pipeline successively;
Described Aerobic Pond is connected by nitrification liquid reflux line with the first anoxic pond and the second anoxic pond respectively, and on nitrification liquid reflux line, is equipped with nitrification liquid recirculation control device described in each;
Described secondary sedimentation basins is connected by sludge return pipe with the second anaerobic pond with the first anaerobic pond respectively, and on sludge return pipe, is equipped with sludge reflux control device described in each.
Preferably, described subregion inlet type D-A
2o waste disposal plant also comprises for controlling the cooperative control device of described inlet control device, nitrification liquid recirculation control device and sludge reflux control device cooperating; Wherein, described cooperative control device is connected with each inlet control device, nitrification liquid recirculation control device and sludge reflux control device respectively.
Preferably, described inlet control device comprises the first inlet control device simultaneously supplying water to the first anaerobic pond and the first anoxic pond for controlling raw water pipeline, and the second inlet control device simultaneously supplying water to the second anaerobic pond and the second anoxic pond for controlling raw water pipeline;
Described nitrification liquid recirculation control device comprises for carry out the first nitrification liquid recirculation control device of nitrification liquid backflow to the first anoxic pond, and for carry out the second nitrification liquid recirculation control device of nitrification liquid backflow to the second anoxic pond;
Described sludge reflux control device comprises for carry out the first sludge reflux control device of sludge reflux to the first anaerobic pond, and for carry out the second sludge reflux control device of sludge reflux to the second anaerobic pond; Wherein,
Described the first inlet control device, the first nitrification liquid recirculation control device and the first sludge reflux control device are the first set control system, described the second inlet control device, the second nitrification liquid recirculation control device and the second sludge reflux control device are the second set control system, and described cooperative control device is used for controlling the first set control system and the second set control system alternation.
Preferably, described subregion inlet type D-A
2o waste disposal plant also comprises for controlling the flow rate control device of the pipe water flow of raw water pipeline described in each; Wherein, described flow rate control device is located on raw water pipeline.
Preferably, described flow rate control device comprises is located at the first flow control device on raw water pipeline between sewage lagoon and the first anaerobic pond, and is located at the second amount control device on raw water pipeline between sewage lagoon and the first anoxic pond; Wherein, described first flow control device and second amount control device control sewage lagoon are (7～9) to the ratio of the first anaerobic pond and the first anoxic pond input sewage quantity: (1～3).
Preferably, described flow rate control device comprises is located at the 3rd flow rate control device on raw water pipeline between sewage lagoon and the second anaerobic pond, and is located at the 4th flow rate control device on raw water pipeline between sewage lagoon and the second anoxic pond; Wherein, described the 3rd flow rate control device and the 4th flow rate control device control sewage lagoon are (7～9) to the ratio of the second anaerobic pond and the second anoxic pond input sewage quantity: (1～3).
Preferably, the volume ratio between described the first anaerobic pond, the first anoxic pond, the second anaerobic pond, the second anoxic pond and Aerobic Pond is 1:1:1:1:3.72.
The present invention overcomes the deficiencies in the prior art, and a kind of subregion inlet type D-A is provided
2o waste disposal plant, by designing independent two-phase sludge reflux system and nitrification liquid return-flow system, wherein one when normally intaking and keeping releasing phosphorus and denitrogenation mutually, in the quiet excessive anoxic of a phase factor of having a rest, carry out the phosphorus effect of releasing and the denitrogenation fully of excess, the phosphorus effect of releasing of guaranteeing system anaerobism section polyP bacteria excess must cause polyP bacteria to inhale phosphorus in the excess of aerobic section, finally the more significant dephosphorization effect of the system that realizes with the form of discharge excess sludge.In the present invention, also determining the control that untreated sewage is injected into the ratio of the amount between anaerobic pond and anoxic pond can effectively avoid system because of the not enough not high problem of denitrogenation dephosphorizing efficiency causing of carbon source.In addition, in the present invention, the return sludge ratio of secondary sedimentation basins and the sewage backflow of Aerobic Pond are compared denitrogenation dephosphorizing efficiency of the present invention considerable influence.
Compare the shortcoming and defect with prior art, the present invention has following beneficial effect: the present invention has overcome A
2in O sewage treatment process, denitrogenation dephosphorizing efficiency is difficult to the problem further significantly promoting, and the stable effluent quality after the present invention processes is marked between surface water environment quality V class at one-level A.
Accompanying drawing explanation
Fig. 1 is subregion inlet type D-A of the present invention
2the structural representation of O waste disposal plant one embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In embodiments of the present invention, a kind of subregion inlet type D-A
2o waste disposal plant, comprises sewage lagoon 1, and Aerobic Pond 2, and the secondary sedimentation basins 3 being connected with Aerobic Pond 2 water sides also comprise the first anaerobic pond 41, the first anoxic pond 51, the second anaerobic pond 42 and the second anoxic pond 52; Wherein, described sewage lagoon 1 is connected by raw water pipeline with the first anaerobic pond 41, the first anoxic pond 51, the second anaerobic pond 42 and the second anoxic pond 52 respectively, and on raw water pipeline, is equipped with inlet control device described in each; Described the first anaerobic pond 41, the first anoxic pond 51 and Aerobic Pond 2 connect by pipeline successively; Described the second anaerobic pond 42, the second anoxic pond 52 and Aerobic Pond 2 connect by pipeline successively; Described Aerobic Pond 2 is connected by nitrification liquid reflux line with the first anoxic pond 51 and the second anoxic pond 52 respectively, and on nitrification liquid reflux line, is equipped with nitrification liquid recirculation control device described in each; Described secondary sedimentation basins 3 is connected by sludge return pipe with the second anaerobic pond 42 with the first anaerobic pond 41 respectively, and on sludge return pipe, is equipped with sludge reflux control device described in each.
Subregion inlet type D-A of the present invention
2the constructional feature of/O waste disposal plant is to have designed independent two-phase mud/nitrification liquid return-flow system, wherein, first-phase mud/nitrification liquid return-flow system consists of sewage lagoon 1, the first anaerobic pond 41, the first anoxic pond 51, Aerobic Pond 2 and secondary sedimentation basins 3, and second-phase mud/nitrification liquid return-flow system consists of sewage lagoon 1, the second anaerobic pond 42, the second anoxic pond 52, Aerobic Pond 2 and secondary sedimentation basins 3.In actual application of the present invention, sewage running condition in reactor is: sewage enters the anaerobic pond of first-phase or second-phase mud/nitrification liquid return-flow system together with the returned sluge from second pond, goes out to flow sewage and can enter anoxic pond with part water inlet and from the mixed solution of Aerobic Pond again; Through anaerobic/anoxic pond, stir fully and mix after biochemical reaction, muddy water mixed solution flow to Aerobic Pond; Aerobic Pond part mixed-liquor return is to anoxic pond, and another part is gone out to flow in second pond by overflow weir and carries out mud-water separation, and supernatant liquor is flowed out by effluent weir, and sludge part is back to anaerobic pond, outside excess sludge discharge system.When system one is moved with above-mentioned running status, another is mutually in the quiet state of having a rest.
The present invention reaches and makes first-phase and the alternation of second-phase mud/nitrification liquid return-flow system by inlet control device, nitrification liquid recirculation control device and sludge reflux control device being carried out to corresponding switching operation, this has solved the effect that the DO bringing in nitrification liquid in anoxic pond affects denitrification denitrogenation in big scale very much, thus the reflux ratio R of the larger flow of efficient denitrification usefulness in assurance system.Its result must guarantee that system wherein one when normally intake and keeping releasing phosphorus and denitrogenation mutually, carries out the phosphorus effect of releasing and the sufficient denitrogenation of excess in the quiet excessive anoxic of a phase factor of having a rest.The phosphorus effect of releasing of anaerobism section polyP bacteria excess must cause polyP bacteria to inhale phosphorus in the excess of aerobic section, finally the more significant dephosphorization effect of the system that realizes with the form of discharge excess sludge.
In addition, in actual application of the present invention, if there is other impurity in sewage lagoon 1, can again the sewage in sewage lagoon 1 be input in anaerobic pond and anoxic pond by arranging after acidification pool etc. absorbs degradation treatment to impurity.
In further implementation process, for the ease of subregion inlet type D-A
2the automated operation of O waste disposal plant, avoids the artificial operation to each control device, in embodiments of the present invention, and described subregion inlet type D-A
2o waste disposal plant also comprises for controlling the cooperative control device (not shown) of described inlet control device, nitrification liquid recirculation control device and sludge reflux control device cooperating; Wherein, described cooperative control device is connected with each inlet control device, nitrification liquid recirculation control device and sludge reflux control device respectively.
In embodiments of the present invention, cooperative control device can, according to the needs of first-phase and the alternation of second-phase mud/nitrification liquid return-flow system, be controlled the cooperating between each inlet control device, nitrification liquid recirculation control device and sludge reflux control device accordingly.
In embodiments of the present invention, more specifically, described inlet control device 6 comprises the first inlet control device 61 simultaneously supplying water to the first anaerobic pond 41 and the first anoxic pond 51 for controlling raw water pipeline, and the second inlet control device 62 simultaneously supplying water to the second anaerobic pond 42 and the second anoxic pond 52 for controlling raw water pipeline; Described nitrification liquid recirculation control device 7 comprises for carry out the first nitrification liquid recirculation control device 71 of nitrification liquid backflow to the first anoxic pond 51, and for carry out the second nitrification liquid recirculation control device 72 of nitrification liquid backflow to the second anoxic pond 51; Described sludge reflux control device 8 comprises for carry out the first sludge reflux control device 81 of sludge reflux to the first anaerobic pond 41, and for carry out the second sludge reflux control device 82 of sludge reflux to the second anaerobic pond 42; Wherein, described the first inlet control device 61, the first nitrification liquid recirculation control device 71 and the first sludge reflux control device 81 are the first set control system, described the second inlet control device 62, the second nitrification liquid recirculation control device 72 and the second sludge reflux control device 82 are the second set control system, and described cooperative control device is used for controlling the first set control system and the second set control system alternation.
In embodiments of the present invention, the first set control system is first-phase mud/nitrification liquid return-flow system, and the second set control system is second-phase mud/nitrification liquid return-flow system, cooperative control device is by controlling the alternation between the first set control system and the second set control system, and then reach the alternation between first-phase mud/nitrification liquid return-flow system and second-phase mud/nitrification liquid return-flow system, device can move voluntarily, and automatization level is higher.
In further implementation process, the present invention is by groping in a large number and test discovery, at subregion inlet type D-A of the present invention
2in O waste disposal plant, the amount of the sewage injecting in the anaerobic pond among 1 pair of first-phase mud/nitrification liquid return-flow system of sewage lagoon or second-phase mud/nitrification liquid return-flow system and anoxic pond or the efficiency that ratio is denitrogenated for the phosphorus that disappears of this device play very important effect, therefore, in embodiments of the present invention, described subregion inlet type D-A
2o waste disposal plant also comprises for controlling the flow rate control device (not shown) of the pipe water flow of raw water pipeline described in each; Wherein, described flow rate control device is located on each raw water pipeline.
In embodiments of the present invention, by flow rate control device, control sewage lagoon 1 and be injected into anaerobic pond among first-phase mud/nitrification liquid return-flow system or second-phase mud/nitrification liquid return-flow system and the ratio of the sewage in anoxic pond, can effectively avoid A
2in O Sewage treatment systems, because carbon source is not enough, cause the problem that denitrogenation dephosphorizing efficiency is not high.
More specifically, in embodiments of the present invention, for first-phase mud/nitrification liquid return-flow system, described flow rate control device comprises is located at the first flow control device (not shown) on raw water pipeline between sewage lagoon 1 and the first anaerobic pond 41, and is located at the second amount control device (not shown) on raw water pipeline between sewage lagoon 1 and the first anoxic pond 51; Wherein, described first flow control device and second amount control device control sewage lagoon are (7～9) to the ratio of the first anaerobic pond 41 and the first anoxic pond 51 input sewage quantities: (1～3).
Same, for second-phase mud/nitrification liquid return-flow system, described flow rate control device comprises is located at the 3rd flow rate control device (not shown) on raw water pipeline between sewage lagoon 1 and the second anaerobic pond 42, and is located at the 4th flow rate control device (not shown) on raw water pipeline between sewage lagoon 1 and the second anoxic pond 52; Wherein, described the 3rd flow rate control device and the 4th flow rate control device control sewage lagoon 1 are (7～9) to the ratio of the second anaerobic pond 42 and the second anoxic pond 52 input sewage quantities: (1～3).
In further implementation process, in order to make in first-phase mud/nitrification liquid return-flow system and second-phase mud/nitrification liquid return-flow system alternation process, the device of the present invention efficiency that phosphorus denitrogenates that disappears can be optimized more, in embodiments of the present invention, the volume ratio between described the first anaerobic pond 41, the first anoxic pond 51, the second anaerobic pond 42, the second anoxic pond 52 and Aerobic Pond 2 is 1:1:1:1:3.72.
In order to verify the wastewater treatment efficiency of the embodiment of the present invention, in the embodiment of the present invention, carry out following test:
Lab scale test water adopts glucose, peptone, anhydrous sodium acetate, potassium primary phosphate, ammonia chloride, sodium bicarbonate etc. to form with tap water human configuration, in order to simulated domestic wastewater.
Test conditions: water temperature=15～22 ℃; Anaerobic pond water inlet ratio=70～90%, anoxic pond water inlet ratio=10～30%; Hydraulic detention time HRT=8～11h; Return current ratio of the mixed liquid R=150～300%(Aerobic Pond 5 sludge concentration MLSS=3500～4500mg/L); Return sludge ratio r=50～150%(returned sluge concentration MLSS=4000～6800mg/L); Two-phase alternate run time T=1～4h.
Test-results refers to table 1:
Table 1 test-results
As shown in Table 1, by the stable effluent quality after device processing of the present invention, at one-level A, mark between surface water environment quality V class.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a subregion inlet type D-A
2o waste disposal plant, comprises sewage lagoon, and Aerobic Pond, and the secondary sedimentation basins being connected with Aerobic Pond water side, is characterized in that, also comprises the first anaerobic pond, the first anoxic pond, the second anaerobic pond and the second anoxic pond; Wherein, described sewage lagoon is connected by raw water pipeline with the first anaerobic pond, the first anoxic pond, the second anaerobic pond and the second anoxic pond respectively, and on raw water pipeline, is equipped with inlet control device described in each; Described the first anaerobic pond, the first anoxic pond and Aerobic Pond connect by pipeline successively; Described the second anaerobic pond, the second anoxic pond and Aerobic Pond connect by pipeline successively;
Described Aerobic Pond is connected by nitrification liquid reflux line with the first anoxic pond and the second anoxic pond respectively, and on nitrification liquid reflux line, is equipped with nitrification liquid recirculation control device described in each;
Described secondary sedimentation basins is connected by sludge return pipe with the second anaerobic pond with the first anaerobic pond respectively, and on sludge return pipe, is equipped with sludge reflux control device described in each.
2. subregion inlet type D-A as claimed in claim 1
2o waste disposal plant, is characterized in that, described subregion inlet type D-A
2o waste disposal plant also comprises for controlling the cooperative control device of described inlet control device, nitrification liquid recirculation control device and sludge reflux control device cooperating; Wherein,
Described cooperative control device is connected with each inlet control device, nitrification liquid recirculation control device and sludge reflux control device respectively.
3. subregion inlet type D-A as claimed in claim 2
2o waste disposal plant, it is characterized in that, described inlet control device comprises the first inlet control device simultaneously supplying water to the first anaerobic pond and the first anoxic pond for controlling raw water pipeline, and the second inlet control device simultaneously supplying water to the second anaerobic pond and the second anoxic pond for controlling raw water pipeline;
Described nitrification liquid recirculation control device comprises for carry out the first nitrification liquid recirculation control device of nitrification liquid backflow to the first anoxic pond, and for carry out the second nitrification liquid recirculation control device of nitrification liquid backflow to the second anoxic pond;
Described sludge reflux control device comprises for carry out the first sludge reflux control device of sludge reflux to the first anaerobic pond, and for carry out the second sludge reflux control device of sludge reflux to the second anaerobic pond; Wherein,
Described the first inlet control device, the first nitrification liquid recirculation control device and the first sludge reflux control device are the first set control system, described the second inlet control device, the second nitrification liquid recirculation control device and the second sludge reflux control device are the second set control system, and described cooperative control device is used for controlling the first set control system and the second set control system alternation.
4. subregion inlet type D-A as claimed in claim 3
2o waste disposal plant, is characterized in that, described subregion inlet type D-A
2o waste disposal plant also comprises for controlling the flow rate control device of the pipe water flow of raw water pipeline described in each; Wherein, described flow rate control device is located on raw water pipeline.
5. subregion inlet type D-A as claimed in claim 4
2o waste disposal plant, it is characterized in that, described flow rate control device comprises is located at the first flow control device on raw water pipeline between sewage lagoon and the first anaerobic pond, and is located at the second amount control device on raw water pipeline between sewage lagoon and the first anoxic pond; Wherein, described first flow control device and second amount control device control sewage lagoon are (7～9) to the ratio of the first anaerobic pond and the first anoxic pond input sewage quantity: (1～3).
6. subregion inlet type D-A as claimed in claim 5
2o waste disposal plant, it is characterized in that, described flow rate control device comprises is located at the 3rd flow rate control device on raw water pipeline between sewage lagoon and the second anaerobic pond, and is located at the 4th flow rate control device on raw water pipeline between sewage lagoon and the second anoxic pond; Wherein, described the 3rd flow rate control device and the 4th flow rate control device control sewage lagoon are (7～9) to the ratio of the second anaerobic pond and the second anoxic pond input sewage quantity: (1～3).
7. subregion inlet type D-A as claimed in claim 6
2o waste disposal plant, is characterized in that, the volume ratio between described the first anaerobic pond, the first anoxic pond, the second anaerobic pond, the second anoxic pond and Aerobic Pond is 1:1:1:1:3.72.
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| CN201310596159.XA CN103613194A (en) | 2013-11-25 | 2013-11-25 | Divisional water feed type D-A<2>0 sewage treatment device |
| CN201410205645.9A CN103979682B (en) | 2013-11-25 | 2014-05-15 | A kind of subregion inlet type D-A 2o waste disposal plant |
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| CN201310596159.XA CN103613194A (en) | 2013-11-25 | 2013-11-25 | Divisional water feed type D-A<2>0 sewage treatment device |
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| CN201410205645.9A Expired - Fee Related CN103979682B (en) | 2013-11-25 | 2014-05-15 | A kind of subregion inlet type D-A 2o waste disposal plant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833142A (en) * | 2014-03-11 | 2014-06-04 | 玉溪师范学院 | Aquamats ecological ditch sewage treatment device |
| CN104761054A (en) * | 2015-03-19 | 2015-07-08 | 叶长兵 | Improvement and upgrading method of AO sewage treatment technology |
| CN108314254A (en) * | 2018-03-15 | 2018-07-24 | 贵州中大环境科技有限公司 | A kind of town domestic sewage reflow treatment device |
| CN110372093A (en) * | 2019-07-04 | 2019-10-25 | 昆明滇池水务股份有限公司 | A kind of multidimensional Precise control sewage disposal system and sewage water treatment method |
| CN110803767A (en) * | 2019-11-25 | 2020-02-18 | 云南滇清环境科技有限公司 | Continuous alternating D-A2MBBR sewage treatment system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107055949B (en) * | 2017-03-12 | 2018-11-27 | 云南滇清环境科技有限公司 | A kind of efficient low-consume Rubber Industrial Wastewater processing method and system that can flexibly switch technique |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706405A1 (en) * | 1987-02-27 | 1988-09-08 | Guenter Dipl Ing Lorenz | WASTE WATER TREATMENT METHOD |
| CN101885559A (en) * | 2010-06-25 | 2010-11-17 | 可事托环保设备（上海）有限公司 | Multi-level biological nitrogen and phosphorus removal sewage treatment method and device |
| CN202492439U (en) * | 2012-03-19 | 2012-10-17 | 中国市政工程西北设计研究院有限公司天津分院 | Multistage anaerobic-anoxia-aerobic bioreaction tank |
| CN204039132U (en) * | 2013-11-25 | 2014-12-24 | 玉溪师范学院 | A kind of subregion inlet type D-A 2o waste disposal plant |
-
2013
- 2013-11-25 CN CN201310596159.XA patent/CN103613194A/en active Pending
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- 2014-05-15 CN CN201410205645.9A patent/CN103979682B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833142A (en) * | 2014-03-11 | 2014-06-04 | 玉溪师范学院 | Aquamats ecological ditch sewage treatment device |
| CN103833142B (en) * | 2014-03-11 | 2015-09-09 | 玉溪师范学院 | A kind of A Ke is overgrow state ditch polluted water treatment unit |
| CN104761054A (en) * | 2015-03-19 | 2015-07-08 | 叶长兵 | Improvement and upgrading method of AO sewage treatment technology |
| CN108314254A (en) * | 2018-03-15 | 2018-07-24 | 贵州中大环境科技有限公司 | A kind of town domestic sewage reflow treatment device |
| CN110372093A (en) * | 2019-07-04 | 2019-10-25 | 昆明滇池水务股份有限公司 | A kind of multidimensional Precise control sewage disposal system and sewage water treatment method |
| CN110803767A (en) * | 2019-11-25 | 2020-02-18 | 云南滇清环境科技有限公司 | Continuous alternating D-A2MBBR sewage treatment system |
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| CN103979682B (en) | 2016-03-30 |
| CN103979682A (en) | 2014-08-13 |
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Application publication date: 20140305 |