CN102206023A - Double-reflux sewage biochemical treatment system and method for sewage and sludge - Google Patents
Double-reflux sewage biochemical treatment system and method for sewage and sludge Download PDFInfo
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Abstract
The invention relates to a double-reflux sewage biochemical treatment system and method for sewage and sludge. The double-reflux sewage biochemical treatment system for the sewage and sludge comprises a grid well, a preliminary sedimentation pond, a regulation pond, an anaerobic treatment device, an anoxic treatment device, an aerobic treatment device, a second sedimentation pond, a sludge pond and a water quality monitoring pond which are successively connected with pipelines according to an organic waste water passing sequence, wherein the sludge reflux outlet of the sludge pond is respectively connected with the sludge inlets of the grid well and the regulation pond through a sludge reflux pipeline; the sewage reflux port of the secondary sedimentation pond is respectively connected with the sewage inlets of the anaerobic treatment device and the anoxic treatment device; the sludge outlet of the secondary sedimentation pond is provided with a water pump; the sludge outlet of the secondary sedimentation pond is connected with the sludge inlet of the mud pond; the sludge outlet of the sludge pond is connected with the inlet of a filter press; and the filtrate outlet of the filter press is connected with the sewage inlet of the regulation pond through a pipeline. According to the invention, biochemical treatment effect can be enhanced, and the system and method play an important role in ensuring the treatment effects of certain sewage.
Description
Technical field
The invention belongs to technical field.
Background technology
Usually activated sludge process needs mud to reflux, and the microbial film rule does not need mud to reflux.Sequencing batch active sludge (being SBR) need not mud and refluxes, and a kind of modification of SBR, loop cycle activated sludge process (CASS, CAST, CASP) technology then needs mud to reflux, and the mud backflow is loop cycle Wastewater Treated by Activated Sludge Process effect one of reason preferably, effect has two: one, and returned sluge is to absorption, the throwing out of entering organic matter of water (being COD), make mud and sewage thorough mixing, entering organic matter of water is played good Degradation; The 2nd, can suppress filamentous bulking.
Traditional activated sludge process is higher to the clearance of COD, and effluent quality is better, but lacks the capacity of resisting impact load that water quality and quantity is changed, and does not have the function of denitrogenation dephosphorizing.Usually biological denitrificaion is realized by anoxic/aerobic method (being the A/O method), this biological denitrificaion method needs sewage backflow (being mixed-liquor return), and biological phosphate-eliminating is realized by aerobic/anaerobic method (being the A/O method), and this biological phosphate-eliminating method needs mud to reflux.Biological carbon and phosphorous removal needs then to realize by anaerobic/anoxic/aerobic method that this biological carbon and phosphorous removal needs sewage backflow and mud to reflux.
And sewage backflow has the branch of big backflow and little backflow in anaerobism or the anaerobic treatment, big backflow is meant from the second pond water outlet of aerobic treatment gets back to anaerobism or anoxic water inlet, and little backflow is meant that anaerobism is directly got back in the anaerobic treatment water outlet or anoxic is intake, and little backflow can only be played the effect of adjusting upflow velocity in the anaerobic reactor.
Usually it is believed that, if do not need denitrogenation dephosphorizing, just do not need sewage backflow and mud to reflux, and in our engineering practice and theory summary, need denitrogenation dephosphorizing even if we not think, the sewage sludge technique of backflow of biochemical treatment (being the dual reflux technology) also has irreplaceable effect.
Summary of the invention
The objective of the invention is to, overcome the result of use of prior art mesophytization treatment system and the defective of efficient aspect, a kind of sewage sludge dual reflux sewage biochemical treatment system and method are provided, use this invention, can strengthen the biochemical treatment effect, to guaranteeing that some sewage treatment effect has important effect, as fermentation waste water, coking chemical waste water, food wastewater, butcher and meat product processing waste water, fruit juice wastewater, leather waste water etc.While can be raised the efficiency and be reduced cost, and reduces working cost, and biochemical treatment has irreplaceable effect to sewage.All sewage backflows are meant the mixed-liquor return in the biochemical treatment second pond in this system, and mud refluxes then and can be from second pond to reflux in sludge bucket or the sludge sump.
A technical scheme that realizes the object of the invention is:
A kind of sewage sludge dual reflux sewage biochemical treatment system, this system comprises by the organic waste water order of flowing through and uses grille well, preliminary sedimentation tank, equalizing tank, anaerobic processing device, anaerobic treatment device, aerobic treatment device, second pond, sludge sump and the water quality monitoring (WQM) pond of pipe connection successively, the sludge outlet of preliminary sedimentation tank, anaerobic processing device and anaerobic treatment device is connected by the mud import of sludge pipe and sludge sump, and the mud bypass outlet of sludge sump is connected with the mud import of grille well and equalizing tank respectively by sludge return pipe; The sewage backflow mouth of second pond is connected with the sewage import of anaerobic processing device and anaerobic treatment device respectively, the sludge outlet of second pond is provided with water pump, the mud import of the sludge outlet of second pond and sludge sump is connected, and the sludge outlet of sludge sump is connected with the import of pressure filter; The filtrate outlet of pressure filter is connected by the sewage import of pipeline and equalizing tank.
Sewage backflow mainly can play following effect to anaerobism or anaerobic treatment in the technique scheme:
1) makes anaerobism or anaerobic treatment more help controlling its hydraulic load, thereby guarantee the quick growth of anaerobion at debugging and run duration;
2) have certain basicity in the recirculation water, can adjust the living environment of microorganism in anaerobism or the anaerobic treatment in good time;
3) impact resistance that raising system brings the variation of the water yield and water quality.
The effect that mud is back to grille well, equalizing tank mainly is: can adsorb a large amount of suspended substances by biological flocculation in grille well or equalizing tank, and and suspended substance precipitate at preliminary sedimentation tank together, thereby removed, be the COD that can reduce effectively in the water like this.
As a further improvement on the present invention, the mud bypass outlet of described sludge sump also is connected with the mud import of anaerobic processing device and anaerobic treatment device respectively by sludge return pipe.The effect that mud is back to anaerobism or anaerobic treatment mainly is:
1) replenishes anaerobism or anaerobic treatment in the sludge loss of debugging during the initial stage;
2) by the anaerobism metabolism of anaerobism or anaerobic treatment, make mud further be able to stabilization, also make the dehydrating effect of mud further strengthen.
As a further improvement on the present invention, the mud bypass outlet of described sludge sump also is connected by the mud import of sludge return pipe and aerobic treatment device.Mud is back to aerobic treatment, mainly can play following effect:
1), can improve the resistivity of total system impact load by returnedactivatedsludge;
2) sludge concentration is about 8-10g/L in the returnedactivatedsludge, and the biology that mixes fully and finish COD, BOD that can finish sewage, mud at short notice adsorbs, thereby improves the removal effect of aerating system;
3) reflux by mud and can suppress the expansion of thread mud in the aeration tank effectively;
4) by in the mud dosing chamber, adding defoamer, because well-mixed effect can make the aeration tank open bubble reduce significantly;
5) can fully improve the sludge concentration of aeration tank by the mud backflow.
As a further improvement on the present invention, described aerobic treatment device comprises one-part form aerobic treatment device and two-section type aerobic treatment device.
Another technical scheme that realizes purpose of the present invention is: a kind of sewage sludge dual reflux sewage biochemical processing method, and this method comprises the following steps: preliminary sedimentation tank treatment step, equalizing tank treatment step, anaerobism and/or anaerobic treatment step, aerobic treatment step and second pond treatment step successively; The mud that produces in the second pond treatment step enters sludge sump, and the sewage that produces in the second pond treatment step is back to anaerobic processing device and anaerobic treatment device respectively; Mud is back to respectively in grille well and the equalizing tank in the sludge sump.
As a further improvement on the present invention, mud also is back to respectively in anaerobic processing device and the anaerobic treatment device in the described sludge sump.
As a further improvement on the present invention, mud also is back in the aerobic treatment device in the described sludge sump.
As a further improvement on the present invention, described aerobic treatment step comprises one-part form aerobic treatment step and two-section type aerobic treatment step.
Can produce significantly effect to sewage biochemical treatment effect by the present invention, wastewater treatment efficiency and efficient all are improved largely, processing to some sewage (as fermentation waste water, coking chemical waste water, food wastewater, butcher and meat product processing waste water, fruit juice wastewater, leather waste water) has irreplaceable effect, effluent quality be can well promote, construction investment and working cost reduced.
Description of drawings
Fig. 1 is the structure iron of the embodiment of the invention 1 sewage sludge dual reflux sewage biochemical treatment system.
Embodiment
Be described further below in conjunction with embodiment and accompanying drawing.
Embodiment 1
As shown in Figure 1, sewage sludge dual reflux sewage biochemical treatment system, this system comprises by the organic waste water order of flowing through and uses the grille well of pipe connection successively, preliminary sedimentation tank, equalizing tank, anaerobic processing device, the anaerobic treatment device, aerobic treatment device, second pond, sludge sump and water quality monitoring (WQM) pond, preliminary sedimentation tank, the sludge outlet of anaerobic processing device and anaerobic treatment device is connected by the mud import of sludge pipe and sludge sump, and the mud bypass outlet of sludge sump by sludge return pipe respectively and grille well, equalizing tank, anaerobic processing device, the mud import of anaerobic treatment device and aerobic treatment device is connected; The sewage backflow mouth of second pond is connected with the sewage import of anaerobic processing device and anaerobic treatment device respectively, the sludge outlet of second pond is provided with water pump, the mud import of the sludge outlet of second pond and sludge sump is connected, and the sludge outlet of sludge sump is connected with the import of pressure filter; The filtrate outlet of pressure filter is connected by the sewage import of pipeline and equalizing tank, allows pressing filtering liquid reflux.
Embodiment 2
In the sewage sludge dual reflux sewage biochemical treatment system as shown in Figure 1, sewage sludge dual reflux sewage biochemical processing method comprises the following steps: successively
The preliminary sedimentation tank treatment step;
Determine the preliminary sedimentation tank hydraulic load according to sewage quality;
The equalizing tank treatment step;
Anaerobism anaerobic treatment step;
The anaerobic treatment step;
One-part form aerobic treatment and two-section type aerobic treatment step;
The second pond treatment step;
The mud that produces in the second pond treatment step is directly got back to grille well or equalizing tank or is entered sludge sump, and the sewage that produces in the second pond treatment step is back to anaerobic processing device, anaerobic treatment device respectively;
Mud is back to respectively in grille well, equalizing tank, anaerobic processing device, anaerobic treatment device, one-part form aerobic treatment device and the two-section type aerobic treatment device in second pond sludge bucket or the sludge sump.
Claims (8)
1. sewage sludge dual reflux sewage biochemical treatment system, this system comprises by the organic waste water order of flowing through and uses grille well, preliminary sedimentation tank, equalizing tank, anaerobic processing device, anaerobic treatment device, aerobic treatment device, second pond, sludge sump and the water quality monitoring (WQM) pond of pipe connection successively, the sludge outlet of preliminary sedimentation tank, anaerobic processing device and anaerobic treatment device is connected by the mud import of sludge pipe and sludge sump, it is characterized in that the mud bypass outlet of sludge sump is connected with the mud import of grille well and equalizing tank respectively by sludge return pipe; The sewage backflow mouth of second pond is connected with the sewage import of anaerobic processing device and anaerobic treatment device respectively, the sludge outlet of second pond is provided with water pump, the mud import of the sludge outlet of second pond and sludge sump is connected, and the sludge outlet of sludge sump is connected with the import of pressure filter; The filtrate outlet of pressure filter is connected by the sewage import of pipeline and equalizing tank.
2. sewage sludge dual reflux sewage biochemical treatment system according to claim 1 is characterized in that the mud bypass outlet of described sludge sump also is connected with the mud import of anaerobic processing device and anaerobic treatment device respectively by sludge return pipe.
3. sewage sludge dual reflux sewage biochemical treatment system according to claim 2 is characterized in that the mud bypass outlet of described sludge sump also is connected by the mud import of sludge return pipe and aerobic treatment device.
4. sewage sludge dual reflux sewage biochemical treatment system according to claim 3 is characterized in that described aerobic treatment device comprises one-part form aerobic treatment device and two-section type aerobic treatment device.
5. sewage sludge dual reflux sewage biochemical processing method, this method comprises the following steps: preliminary sedimentation tank treatment step, equalizing tank treatment step, anaerobism and/or anaerobic treatment step, aerobic treatment step and second pond treatment step successively; It is characterized in that the mud that produces in the second pond treatment step enters sludge sump, the sewage that produces in the second pond treatment step is back to anaerobic processing device and anaerobic treatment device respectively; Mud is back to respectively in grille well and the equalizing tank in the sludge sump.
6. sewage sludge dual reflux sewage biochemical processing method according to claim 5 is characterized in that, mud also is back to respectively in anaerobic processing device and the anaerobic treatment device in the described sludge sump.
7. sewage sludge dual reflux sewage biochemical processing method according to claim 5 is characterized in that, mud also is back in the aerobic treatment device in the described sludge sump.
8. sewage sludge dual reflux sewage biochemical processing method according to claim 5 is characterized in that described aerobic treatment step comprises one-part form aerobic treatment step and two-section type aerobic treatment step.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583905A (en) * | 2012-03-19 | 2012-07-18 | 北京桑德环境工程有限公司 | Sewage treatment method |
| CN102701531A (en) * | 2012-06-21 | 2012-10-03 | 福建广汇龙环保科技有限公司 | Slaughter sewage treatment method |
| CN103058454A (en) * | 2012-12-05 | 2013-04-24 | 河海大学 | Method for high-efficiency treatment of polluted surface water by using combined biofilm |
| CN104150716A (en) * | 2014-08-20 | 2014-11-19 | 哈尔滨工业大学 | Biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region and method for processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region |
| CN104692527A (en) * | 2015-03-27 | 2015-06-10 | 中蓝连海设计研究院 | Method for strengthening shock load tolerance of coal-chemical engineering wastewater biochemical treatment system |
| CN106517647A (en) * | 2016-11-14 | 2017-03-22 | 深圳市贝优通新能源技术开发有限公司 | Wastewater treatment system for treating coking wastewater |
| CN108439719A (en) * | 2018-04-27 | 2018-08-24 | 易能环境技术有限公司 | A kind of sewage treatment process |
| CN109205780A (en) * | 2017-07-01 | 2019-01-15 | 陕西谷德环保科技有限公司 | A kind of short distance intensified denitrification and dephosphorization device |
| CN111646631A (en) * | 2020-05-06 | 2020-09-11 | 山东双融环保工程有限公司 | Beet sugar wastewater treatment system and treatment process |
| CN112028394A (en) * | 2020-08-25 | 2020-12-04 | 长江勘测规划设计研究有限责任公司 | Low-consumption high-standard treatment device and treatment method for town sewage |
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| CN101337753A (en) * | 2008-08-11 | 2009-01-07 | 金月祥 | Sewage disposal and circling reclamation method |
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| CN101337753A (en) * | 2008-08-11 | 2009-01-07 | 金月祥 | Sewage disposal and circling reclamation method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583905B (en) * | 2012-03-19 | 2014-06-04 | 北京桑德环境工程有限公司 | Sewage treatment method |
| CN102583905A (en) * | 2012-03-19 | 2012-07-18 | 北京桑德环境工程有限公司 | Sewage treatment method |
| CN102701531A (en) * | 2012-06-21 | 2012-10-03 | 福建广汇龙环保科技有限公司 | Slaughter sewage treatment method |
| CN102701531B (en) * | 2012-06-21 | 2014-06-04 | 福建广汇龙环保科技有限公司 | Slaughter sewage treatment method |
| CN103058454A (en) * | 2012-12-05 | 2013-04-24 | 河海大学 | Method for high-efficiency treatment of polluted surface water by using combined biofilm |
| CN104150716B (en) * | 2014-08-20 | 2016-04-06 | 哈尔滨工业大学 | A kind of biological treatment device process processing cold low temp area low carbon-nitrogen ratio sewage is utilized to tremble with fear the method for low temp area low carbon-nitrogen ratio sewage |
| CN104150716A (en) * | 2014-08-20 | 2014-11-19 | 哈尔滨工业大学 | Biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region and method for processing sewage at low-temperature with low carbon-nitrogen-ratio in cold region |
| CN104692527A (en) * | 2015-03-27 | 2015-06-10 | 中蓝连海设计研究院 | Method for strengthening shock load tolerance of coal-chemical engineering wastewater biochemical treatment system |
| CN106517647A (en) * | 2016-11-14 | 2017-03-22 | 深圳市贝优通新能源技术开发有限公司 | Wastewater treatment system for treating coking wastewater |
| CN109205780A (en) * | 2017-07-01 | 2019-01-15 | 陕西谷德环保科技有限公司 | A kind of short distance intensified denitrification and dephosphorization device |
| CN108439719A (en) * | 2018-04-27 | 2018-08-24 | 易能环境技术有限公司 | A kind of sewage treatment process |
| CN111646631A (en) * | 2020-05-06 | 2020-09-11 | 山东双融环保工程有限公司 | Beet sugar wastewater treatment system and treatment process |
| CN112028394A (en) * | 2020-08-25 | 2020-12-04 | 长江勘测规划设计研究有限责任公司 | Low-consumption high-standard treatment device and treatment method for town sewage |
| CN112028394B (en) * | 2020-08-25 | 2023-01-24 | 长江勘测规划设计研究有限责任公司 | Low-consumption high-standard treatment device and treatment method for town sewage |
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Application publication date: 20111005 |