CN201737808U - Microenvironment synchronous denitrifying and dephosphorizing sewage treatment device with high sludge concentration - Google Patents
Microenvironment synchronous denitrifying and dephosphorizing sewage treatment device with high sludge concentration Download PDFInfo
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- CN201737808U CN201737808U CN2010202226122U CN201020222612U CN201737808U CN 201737808 U CN201737808 U CN 201737808U CN 2010202226122 U CN2010202226122 U CN 2010202226122U CN 201020222612 U CN201020222612 U CN 201020222612U CN 201737808 U CN201737808 U CN 201737808U
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Abstract
The utility model relates to a microenvironment synchronous denitrifying and dephosphorizing sewage treatment device with high sludge concentration. The microenvironment synchronous denitrifying and dephosphorizing sewage treatment device is provided with an anaerobic tank, two anoxic tanks, two aerobic tanks, two sedimentation tanks, an inner reflux pump, an outer reflux pump, a pipeline, an oxygen-dissolving control device and a water inlet carbon source distribution device which are arrayed and communicated back and forth in order. The inner reflux pump and the outer reflux pump are frequency-changing control flow-adjustable volume delivery pumps; the oxygen-dissolving control device is provided with an oxygen-dissolving controller B and on-line oxygen-dissolving concentration meters arranged in the aerobic tanks A and B; the water inlet carbon source control device is provided with a nitrate nitrogen concentration controller A and on-line nitrate nitrogen concentration meters arranged in the anoxic tanks A and B; in addition, inner and outer reflux control devices are also provided. With perfect structure, simple process, low cost, high water outlet efficiency and good water outlet quality, the microenvironment synchronous denitrifying and dephosphorizing sewage treatment device saves energy and is suitable for sewage treatment.
Description
Technical field
The utility model belongs to a kind of sewage disposal technology, specifically is that anaerobic-anoxic-aerobic type is improving equipment of A/A/O sewage disposal technology.
Background technology
At present, traditional A/A/O sewage treatment process is the biological denitrification phosphorous removal technique of widespread use, and this technology has solved the sewage denitrification and dephosphorization problem to a certain extent.Along with the continuous enhancing of environmental consciousness in the society and the worsening shortages of water resources, make more and more higher to the sewage disposal plant effluent requirements in water quality.And mainly there is following problem in traditional A/A/O technology: 1, the not enough denitrification process in phosphorus and the anoxic pond released that influences in the anaerobic pond of carbon source.2, lower activated sludge concentration influences the stability of water outlet ammonia nitrogen.3, handle the restriction that load is subjected to sludge settling property,, make that handling load can not further improve because the speed of sludge settling is slower.4, to be subjected to the nitrification liquid quantity of reflux be that the restriction of internal reflux is difficult to further raising to denitrification effect, and increase the internal reflux amount, then causes the carbon source deficiency.Tradition A/A/O technology often solves the not enough problem of carbon source by adding external carbon source such as methyl alcohol, increasing filler and increase the mud backflow in the aeration tank is the external reflux amount, improves sludge concentration, improves sludge settling speed, handle load to increase, and guarantee stable nitrification effect; But these measures have increased investment and running cost, and improve internal reflux and increased that dissolved oxygen further causes the carbon source deficiency to the consumption of water-inlet carbon source in the internal reflux, and denitrification effect descends on the contrary; Equally, in order to improve sludge concentration, improve sludge settling speed, handle load with increase, guarantee stable nitrification effect, increasing filler and increase the mud backflow in the aeration tank is the external reflux amount, feasible operation is complicated more, has improved running cost, has reduced the efficient of sewage disposal.Therefore, need do further improvement,, further improve effluent quality, and simplify operation process, reduce running cost, satisfy needs of society better to improve the effect of sewage disposal to traditional A/A/O processing unit and improved method thereof.
The utility model content
At traditional A/A/O processing unit and the existing problem of improving one's methods and existing, the purpose of this utility model provides a kind of high sludge concentration microenvironment synchronous denitrification dephosphorizing waste disposal plant, the backflow that this device can reasonably be controlled the nitrification liquid in traditional A/A/O equipment is that internal reflux amount and mud backflow are the external reflux amount, change volumetric pump into by traditional impeller pump, can improve sludge concentration equally, improve the settling property of mud, form the microenvironment of high density big flocculating body mud granule, in the inner anaerobic environment that forms of active sludge flco, the outside is an aerobic environment, producing synchronous nitration and denitrification is the effect of denitrogenation dephosphorizing, improves the stability of handling load and treatment effect and treatment effect; Minimizing reduces the dosage of additional carbon to the consumption of water-inlet carbon source, simplifies operation process, reduces running cost.
The purpose of this utility model is to realize by following technical scheme:
It is that internal reflux pump and pipeline, mud refluxes is external reflux pump and pipeline, dissolved oxygen control device and water-inlet carbon source distribution device that high sludge concentration microenvironment synchronous denitrification dephosphorizing waste disposal plant of the present utility model, anaerobic pond, anoxic pond, Aerobic Pond and the second pond of arranging before and after being provided with in regular turn and being communicated with, nitrification liquid reflux; It is characterized in that: anoxic pond and Aerobic Pond are respectively equipped with two, and are arranged as anoxic pond A, Aerobic Pond A, anoxic pond B, Aerobic Pond B in regular turn, and the front is communicated with anaerobic pond, and the back is communicated with second pond; Described internal reflux pump and pipeline are: by Aerobic Pond B to pipeline and variable frequency control adjustable flow positive-displacement pump A, described external reflux pump and the pipeline that the nitrification liquid of anoxic pond A refluxes be: by pipeline and the variable frequency control adjustable flow positive-displacement pump B of second pond to the mud backflow of anaerobic pond; Described dissolved oxygen control device is provided with dissolved oxygen controller B and is arranged on online dissolved oxygen concentration meter among Aerobic Pond A, the B, and dissolved oxygen controller carries out signal with online dissolved oxygen concentration meter and is connected, and carries out control linkage with controlled motorized valve A on the aerating pipelines; Described water-inlet carbon source control device is provided with nitrate nitrogen consistency controller A and the online nitrate nitrogen densitometer that is arranged among anoxic pond A, the B, the nitrate nitrogen consistency controller carries out signal with online nitrate nitrogen densitometer and is connected, and with water-inlet carbon source be that controlled motorized valve B on the initial plumbing drain carries out control linkage; Also be provided with internal reflux and external reflux control device in addition, refluence control device is provided with internal reflux controller D and is located at nitrate nitrogen densitometer on the rising pipe, and the internal reflux controller is connected with nitrate nitrogen densitometer signal, and with internal reflux pump control linkage; The external reflux control device is provided with external reflux controller C and is located at sludge concentration meter among the Aerobic Pond B, and the external reflux controller is connected with sludge concentration meter signal, and with the external reflux pump control linkage.
Described variable frequency control adjustable flow positive-displacement pump is frequency conversion reciprocating pump or frequency conversion drum pump.
The cardinal principle of device operation of the present utility model:
(1) to adopt positive-displacement pump to carry out that nitrification liquid refluxes be that internal reflux and mud refluxes be that external reflux has outstanding effect to the utility model device.Traditional technology adopts impeller pump to carry out internal reflux and external reflux, be to pass to the liquid of being carried by impeller drive liquid at high speed revolution and mechanical energy when adopting impeller pump, the high speed rotary of impeller can produce great shearing force to the mud flco in refluxing, make the mud flco in the biological reaction tank constantly be sheared fragmentation, its particle diameter generally only is about 100 microns.After adopting the positive-displacement pump in this device, because positive-displacement pump mainly adopts the turning motion of the to-and-fro movement of piston or screw rod to cause that working volume periodically increases and dwindles and suction liquid, the speed that moving parts is lower is less to the shearing force of mud flco, mud flco in the biological reaction tank can be grown up gradually, and its particle diameter can maintain more than 300 microns.Bigger mud flco particle diameter is that the anoxic microenvironment of formation flco inside and good sludge settling property have been created necessary precondition.
(2) dissolved oxygen of Aerobic Pond A is controlled at 0.3～1.5mg/L in the working method of the present utility model, and generally to be controlled at 2～3mg/L obviously different with dissolved oxygen in the traditional technology.In order in the mud flco, to form the anoxic microenvironment, must keep lower dissolved oxygen, reaction effect needs higher dissolved oxygen and in order to reach faster, through after the repetition test, in aerobic A, adopt in the utility model device 0.3～1.5mg/L than low dissolved axygen, in Aerobic Pond B, adopt 2～5mg/L than high-solubility oxygen.It is needed than low dissolved axygen promptly to have satisfied microenvironment, realized again improving speed of response required than the high-solubility oxygen requirement.
(3) the utility model device adopts the structure that " anaerobic pond-anoxic pond A-Aerobic Pond A-anoxic B-Aerobic Pond B " is communicated with in regular turn, has obvious different with the structure that traditional " anaerobic pond-anoxic pond-Aerobic Pond " is communicated with in regular turn.This device distributes in conjunction with water-inlet carbon source, can the required water-inlet carbon source of denitrification effectively be assigned among the anoxic pond B among the anoxic A exceeding, increase the denitrification effect among the anoxic pond B, and prevent that simultaneously too much carbon source is oxidized in Aerobic Pond A, cause the waste of the energy.The anaerobic environment of denitrification function in anoxic pond B of the anoxic microenvironment that forms in Aerobic Pond A simultaneously, obtained reinforcement.
Device of the present utility model and technology are owing to improved the traditional structure in pond, particularly adopt positive-displacement pump, the mud flco that produces in the biological process is not broken, by refluxing, further grow up, mud flco volume and sludge concentration improve greatly, and the concentration gradient that exists matrix and dissolved oxygen in this technology in the large size active sludge flco that forms distributes, by control Aerobic Pond dissolved oxygen and active sludge flco size, in the inner anoxic microenvironment that forms of active sludge flco.The aerobic environment of active sludge flco outside and inner anaerobic environment provide condition for the microorganism of various different ecological type occupies advantage at active sludge flco different sites, thereby have realized synchronous nitration denitrification denitrogenation.By the properly distributed water-inlet carbon source, the anoxic microenvironment that the active sludge flco is formed promptly can obtain enough nitrate and carbon source simultaneously, makes the microenvironment synchronous nitration and denitrification reaction of this technology produce best effect.It is comparatively perfect to have structure, and control is flexible, level of automation height, the advantage that wastewater treatment efficiency and efficient are good especially.
Description of drawings
Fig. 1 is the structural representation of high sludge concentration microenvironment synchronous denitrification dephosphorizing waste disposal plant of the present utility model.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment the utility model is described further:
It is that internal reflux pump and pipeline, mud refluxes is external reflux pump and pipeline, dissolved oxygen control device and water-inlet carbon source distribution device that high sludge concentration microenvironment synchronous denitrification dephosphorizing waste disposal plant, anaerobic pond, anoxic pond, Aerobic Pond and the second pond of arranging before and after being provided with in regular turn and being communicated with, nitrification liquid reflux; Anoxic pond and Aerobic Pond are respectively equipped with two, and are arranged as anoxic pond A, Aerobic Pond A, anoxic pond B, Aerobic Pond B in regular turn, and the front is communicated with anaerobic pond, and the back is communicated with second pond; Described internal reflux pump and pipeline are: by Aerobic Pond B to pipeline and variable frequency control adjustable flow positive-displacement pump A4.2, described external reflux pump and the pipeline that the nitrification liquid of anoxic pond A refluxes be: by pipeline and the variable frequency control adjustable flow positive-displacement pump B3.2 of second pond to the mud backflow of anaerobic pond; Described dissolved oxygen control device is provided with dissolved oxygen controller B 2 and the online dissolved oxygen concentration meter 2.1 that is arranged among Aerobic Pond A, the B, dissolved oxygen controller carries out signal with online dissolved oxygen concentration meter and is connected, and carries out control linkage with controlled motorized valve A2.2 on the aerating pipelines; Described water-inlet carbon source control device is provided with nitrate nitrogen consistency controller A1 and the online nitrate nitrogen densitometer 1.1 that is arranged among anoxic pond A, the B, the nitrate nitrogen consistency controller carries out signal with online nitrate nitrogen densitometer and is connected, and with water-inlet carbon source be that controlled motorized valve B1.2 on the initial plumbing drain carries out control linkage; Also be provided with internal reflux and external reflux control device in addition, refluence control device is provided with internal reflux controller D4 and the nitrate nitrogen densitometer 4.1 that is located on the rising pipe, the internal reflux controller is connected with nitrate nitrogen densitometer signal, and with internal reflux pump 4.2 control linkages; The external reflux control device is provided with external reflux controller C3 and is located at sludge concentration meter 3.1 among the Aerobic Pond B, and the external reflux controller is connected with sludge concentration meter signal, and with external reflux pump 3.2 control linkages.The adjustable flow of variable frequency control described in present embodiment positive-displacement pump is the frequency conversion drum pump.
Utilize synchronous denitrification dephosphorizing waste disposal plant of the present utility model to improve sludge concentration and utilize microenvironment in the active sludge to carry out the concrete operations step of synchronous denitrification dephosphorizing sewage treatment process:
(1) control data of the controller C of setting internal reflux variable frequency control adjustable flow positive-displacement pump A; (2) control data of setting external reflux variable frequency control adjustable flow positive-displacement pump B controller D; (3) control data of dissolved oxygen controller B is set; (4) control data of setting anoxic pond nitrate nitrogen consistency controller A; (5) open inlet gate, open the machinery and the electric-controlled parts in each pond in this device, this device brings into operation; When guard signal occurring, carry out manually doing and get final product with processing.
Claims (2)
1. one kind high sludge concentration microenvironment synchronous denitrification dephosphorizing waste disposal plant, arrange before and after being provided with in regular turn and anaerobic pond, anoxic pond, Aerobic Pond and the second pond, the nitrification liquid that are communicated with to reflux be that internal reflux pump and pipeline, mud refluxes be external reflux pump and pipeline, dissolved oxygen control device and water-inlet carbon source distribution device; It is characterized in that: anoxic pond and Aerobic Pond are respectively equipped with two, and are arranged as anoxic pond A, Aerobic Pond A, anoxic pond B, Aerobic Pond B in regular turn, and the front is communicated with anaerobic pond, and the back is communicated with second pond; Described internal reflux pump and pipeline are: by Aerobic Pond B to pipeline and variable frequency control adjustable flow positive-displacement pump A (4.2), described external reflux pump and the pipeline that the nitrification liquid of anoxic pond A refluxes be: by pipeline and the variable frequency control adjustable flow positive-displacement pump B (3.2) of second pond to the mud backflow of anaerobic pond; Described dissolved oxygen control device is provided with dissolved oxygen controller B (2) and is arranged on online dissolved oxygen concentration meter (2.1) among Aerobic Pond A, the B, dissolved oxygen controller carries out signal with online dissolved oxygen concentration meter and is connected, and carries out control linkage with controlled motorized valve A (2.2) on the aerating pipelines; Described water-inlet carbon source control device is provided with nitrate nitrogen consistency controller A (1) and is arranged on online nitrate nitrogen densitometer (1.1) among anoxic pond A, the B, the nitrate nitrogen consistency controller carries out signal with online nitrate nitrogen densitometer and is connected, and with water-inlet carbon source be that controlled motorized valve B (1.2) on the initial plumbing drain carries out control linkage; Also be provided with internal reflux and external reflux control device in addition, refluence control device is provided with internal reflux controller D (4) and is located at nitrate nitrogen densitometer (4.1) on the rising pipe, the internal reflux controller is connected with nitrate nitrogen densitometer signal, and with internal reflux pump (4.2) control linkage; The external reflux control device is provided with external reflux controller C (3) and is located at sludge concentration meter (3.1) among the Aerobic Pond B, and the external reflux controller is connected with sludge concentration meter signal, and with external reflux pump (3.2) control linkage.
2. waste disposal plant according to claim 1 is characterized in that: described variable frequency control adjustable flow positive-displacement pump is frequency conversion reciprocating pump or frequency conversion drum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202226122U CN201737808U (en) | 2010-06-03 | 2010-06-03 | Microenvironment synchronous denitrifying and dephosphorizing sewage treatment device with high sludge concentration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202226122U CN201737808U (en) | 2010-06-03 | 2010-06-03 | Microenvironment synchronous denitrifying and dephosphorizing sewage treatment device with high sludge concentration |
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| CN201737808U true CN201737808U (en) | 2011-02-09 |
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| CN2010202226122U Expired - Fee Related CN201737808U (en) | 2010-06-03 | 2010-06-03 | Microenvironment synchronous denitrifying and dephosphorizing sewage treatment device with high sludge concentration |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295346A (en) * | 2011-06-14 | 2011-12-28 | 江苏龙腾工程设计有限公司 | Adjustable biochemical tank and adjustable AAO process for water treatment |
| CN104211266A (en) * | 2014-09-26 | 2014-12-17 | 成都绿源新创环保科技有限公司 | Wastewater treatment additional carbon resource cascade control device |
| CN104781197A (en) * | 2012-11-16 | 2015-07-15 | 安杰伊·戈勒茨 | Installation and method for wastewater treatment |
| CN111076091A (en) * | 2020-01-06 | 2020-04-28 | 广州环投环境服务有限公司 | High-lift constant-current feeding device |
-
2010
- 2010-06-03 CN CN2010202226122U patent/CN201737808U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295346A (en) * | 2011-06-14 | 2011-12-28 | 江苏龙腾工程设计有限公司 | Adjustable biochemical tank and adjustable AAO process for water treatment |
| CN102295346B (en) * | 2011-06-14 | 2012-12-26 | 江苏龙腾工程设计有限公司 | Adjustable biochemical tank and adjustable AAO process for water treatment |
| CN104781197A (en) * | 2012-11-16 | 2015-07-15 | 安杰伊·戈勒茨 | Installation and method for wastewater treatment |
| CN104211266A (en) * | 2014-09-26 | 2014-12-17 | 成都绿源新创环保科技有限公司 | Wastewater treatment additional carbon resource cascade control device |
| CN111076091A (en) * | 2020-01-06 | 2020-04-28 | 广州环投环境服务有限公司 | High-lift constant-current feeding device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20130603 |