CN103058385A - Process for treatment of high density aquaculture sewage - Google Patents
Process for treatment of high density aquaculture sewage Download PDFInfo
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- CN103058385A CN103058385A CN2011103211886A CN201110321188A CN103058385A CN 103058385 A CN103058385 A CN 103058385A CN 2011103211886 A CN2011103211886 A CN 2011103211886A CN 201110321188 A CN201110321188 A CN 201110321188A CN 103058385 A CN103058385 A CN 103058385A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention relates to a process for treatment of high density aquaculture sewage. The process is characterized by: pumping high density aquaculture sewage into a microbial flocculation reactor, and adding a Bacillus subtilis seed bacterial solution subjected to activation culture, with the seed bacterial solution and the culture sewage being in a volume ratio of 1-3:100; disposing aeration equipment evenly at the bottom inside the reactor, and controlling the gas-water ratio at 2-2.5:1 and the dissolved oxygen at a concentration of 2-3mg/L; fully mixing the pumped sewage with the seed bacterial solution added therein for 0.8-1.2h under a blast aeration effect to produce biological flocculants decompose organic matters and proliferate microorganisms; leaving the mixed solution generated in the microbial flocculation reactor to flow through a sedimentation-biotreatment reactor, which relies on natural ventilation for oxygen supply and is filled with a suspending biological filter material at a filling rate of 25-30%; performing solid-liquid separation and biochemical reaction on the mixed solution in the sedimentation-biotreatment reactor; and subjecting the generated sediment, except for part of returned sludge, to centralized discharge, returning the sludge to the microbial flocculation reactor, and returning pure water to a culture pool.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of processing method of processing high-density aquiculture sewage.
Background technology
China is the aquaculture big country of a resource-constrained, energy scarcity.Along with the continuous expansion of intensive culture scale, being raised the inorganicss such as the metabolite of generation, residual bait organism and ammonia nitrogen by throwing has become new source of pollution, and the water surrounding that day by day wears out simultaneously, pollutes has also restricted aquaculture and further developed.The abundant uses advanced technology of circulating water cultivation pattern and means are created the good living environment of fish, realize high yield, high efficiency production and aquaculture wastewater zero release, and greatly improve the land resources utilization rate, become the inexorable trend of aquaculture Sustainable development.At present its main flow water purification style of this pattern all with nitrogen a large amount of in the water body, phosphorus substance as pollutent, adopt the water technology such as physics, biology and means effectively to remove, thereby cause investment, running cost to remain high, especially for high-density breeding production, greatly restricted the further application of circulating water cultivation pattern.
Summary of the invention
The objective of the invention is to overcome above-mentioned technological deficiency, provide a kind of integrated microorganism flocculation, precipitation, biologic treating technique, treatment effect to stablize, invest the processing method of running cost processing high-density aquiculture sewage cheap, easy and simple to handle.
A kind of processing method of processing high-density aquiculture sewage of the present invention, it is characterized in that, the high-density aquiculture sewage that the filling of microorganism flocculation reactor pumps into, add the Bacillus subtilus kind daughter bacteria liquid after the activated cultivation in it, plant daughter bacteria liquid and aquaculture wastewater volume ratio: 1～3: 100; Bottom even in the reactor arranges aerating apparatus, gas-water ratio: 2～2.5: 1, and dissolved oxygen: 2～3mg/L;
The high-density aquiculture sewage that pumps in the microorganism flocculation reactor fully mixes under the blast aeration effect with the kind daughter bacteria liquid that is suspended state that drops into wherein, produce biological flocculant, decomposing organic matter, replicating microorganism, the hybrid reaction time is 0.8～1.2 hour;
The mixed solution that produces in the microorganism flocculation reactor, the precipitation-biological treatment reactor of flowing through.Precipitation-biological treatment reactor relies on the natural ventilation oxygen supply, interior filling suspended biological filtrate, and packing fraction is 25～30%;
Carry out solid-liquid separation and the biochemical reaction of mixed solution in the precipitation-biological treatment reactor.The settling that produces is all concentrated discharging except partial reflux mud, returned sluge is to the microorganism flocculation reactor, and reflux ratio is 30～40%; The supernatant liquor that separates then under the suspended biological filtrate effect of upper strata soluble organic be able to further degraded, stopping the reaction times is 0.8～1 hour; Water purification is back to culturing pool.
The microorganism flocculation that the present invention adopts, precipitation, biological treatment integrated technology purify high-density aquiculture sewage processing method, and microbiological coagulation method is applied to the aquaculture wastewater pre-process.Microbiological coagulation method is a novel sewage disposal technology that begins one's study early 1990s and develop.It adopts the bacterial strain through domestication, seed selection or structure that nitrogen a large amount of in the aquaculture wastewater, phosphorus substance are used as nutrition, by self metabolic propagate microorganisms, produce biological flocculant, decomposing organic matter, under this synergy, realize the final purpose of sewage purification.As aquaculture wastewater pre-process technique, microbiological coagulation method greatly reduces the organic loading of subsequent disposal with its special performance comprehensive utilization sewage resource.
The microorganism flocculation that the present invention adopts, precipitation, biological treatment integrated technology purify high-density aquiculture sewage processing method, have made up precipitation-biological treatment integrated reacting system.Under certain residence time, reactive system had both been finished the solid-liquid separation of the sewage of processing, again to being dissolved in organism in the separation of supernatant by placing the suspended biological filtrate that is in the reactor under the natural ventilating status further to degrade.Suspended biological filtrate specific surface area is high, nothing is stopped up.
A kind of processing high-density aquiculture sewage processing method of the present invention integrates premium properties, obtaining under the stabilizing treatment effect prerequisite, effectively reduce investment running cost, and operational administrative is more easy.The present invention is applied to the high-density aquiculture sewage disposal, and the result shows: suspended solids SS clearance 47～56%, chemical oxygen demand COD clearance 52～65%.
Description of drawings
Accompanying drawing 1 is to be process flow sheet of the present invention.
Embodiment
Embodiment 1:
A kind of processing method of processing high-density aquiculture sewage pumps into high-density aquiculture sewage to the microorganism flocculation reactor, adds the Bacillus subtilus kind daughter bacteria liquid after the activated cultivation in it, plants daughter bacteria liquid and aquaculture wastewater volume ratio: 1: 100; Bottom even in the reactor arranges aerating apparatus, gas-water ratio: 2: 1, and dissolved oxygen: 2.2mg/L;
The high-density aquiculture sewage that pumps in the microorganism flocculation reactor fully mixes under the blast aeration effect with the kind daughter bacteria liquid that is suspended state that drops into wherein, produces biological flocculant, decomposing organic matter, replicating microorganism, and the hybrid reaction time is 1 hour;
The mixed solution that produces in the microorganism flocculation reactor carries out solid-liquid separation and biochemical reaction in the precipitation-biological treatment reactor of flowing through;
Precipitation-biological treatment reactor relies on the natural ventilation oxygen supply, interior filling polyethylene suspended biological filtrate, and packing fraction is 25%; The settling that produces in the precipitation-biological treatment reactor is all concentrated discharging except being partly refluxed to the microorganism flocculation reactor, returned sluge is to the microorganism flocculation reactor, and reflux ratio is 30%;
The supernatant liquor that separates then under the floating stuffing effect of upper strata soluble organic be able to further degraded, stopping the reaction times is 1 hour; Water purification is back to culturing pool.
Suspended solids SS clearance 53%, chemical oxygen demand COD clearance 58%.
Embodiment 2:
A kind of processing method of processing high-density aquiculture sewage pumps into high-density aquiculture sewage to the microorganism flocculation reactor, adds the Bacillus subtilus kind daughter bacteria liquid after the activated cultivation in it, plants daughter bacteria liquid and aquaculture wastewater volume ratio: 2: 100; Bottom even in the reactor arranges aerating apparatus, gas-water ratio: 2.3: 1, and dissolved oxygen: 2.5mg/L;
The high-density aquiculture sewage that pumps in the microorganism flocculation reactor fully mixes under the blast aeration effect with the kind daughter bacteria liquid that is suspended state that drops into wherein, produce biological flocculant, decomposing organic matter, replicating microorganism, the hybrid reaction time is 1.2 hours;
The mixed solution that produces in the microorganism flocculation reactor carries out solid-liquid separation and biochemical reaction in the precipitation-biological treatment reactor of flowing through;
Precipitation-biological treatment reactor relies on the natural ventilation oxygen supply, interior filling polyethylene suspended biological filtrate, and packing fraction is 30%; The settling that produces in the precipitation-biological treatment reactor is all concentrated discharging except being partly refluxed to the microorganism flocculation reactor, returned sluge is to the microorganism flocculation reactor, and reflux ratio is 35%;
The supernatant liquor that separates then under the floating stuffing effect of upper strata soluble organic be able to further degraded, stopping the reaction times is 1 hour; Water purification is back to culturing pool.
Use the present invention to process high-density aquiculture sewage, the result shows: suspended solids SS clearance 55%, chemical oxygen demand COD clearance 64%.
Claims (2)
1. a processing method of processing high-density aquiculture sewage is characterized in that,
Pump into high-density aquiculture sewage to the microorganism flocculation reactor, add the Bacillus subtilus kind daughter bacteria liquid after the activated cultivation in it, plant daughter bacteria liquid and aquaculture wastewater volume ratio: 1～3: 100; Bottom even in the reactor arranges aerating apparatus, gas-water ratio: 2～2.5: 1, and dissolved oxygen: 2～3mg/L;
The high-density aquiculture sewage that pumps in the microorganism flocculation reactor fully mixes under the blast aeration effect with the kind daughter bacteria liquid that is suspended state that drops into wherein, produce biological flocculant, decomposing organic matter, replicating microorganism, the hybrid reaction time is 0.8～1.2 hour;
The mixed solution that produces in the microorganism flocculation reactor, the precipitation-biological treatment reactor of flowing through; Precipitation-biological treatment reactor relies on the natural ventilation oxygen supply, interior filling suspended biological filtrate, and packing fraction is 25～30%;
Carry out solid-liquid separation and the biochemical reaction of mixed solution in the precipitation-biological treatment reactor; The settling that produces is all concentrated discharging except partial reflux mud, returned sluge is to the microorganism flocculation reactor, and reflux ratio is 30～40%; The supernatant liquor that separates then under the suspended biological filtrate effect of upper strata soluble organic be able to further degraded, stopping the reaction times is 0.8～1 hour; Water purification is back to culturing pool.
2. according to a kind of processing method of processing high-density aquiculture sewage claimed in claim 1, it is characterized in that, the floating stuffing of filling is polyethylene suspended biological filtrate in the precipitation-biological treatment reactor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110321188.6A CN103058385B (en) | 2011-10-20 | 2011-10-20 | Process for treatment of high density aquaculture sewage |
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| CN201110321188.6A CN103058385B (en) | 2011-10-20 | 2011-10-20 | Process for treatment of high density aquaculture sewage |
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| CN103058385A true CN103058385A (en) | 2013-04-24 |
| CN103058385B CN103058385B (en) | 2014-05-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496820A (en) * | 2013-09-18 | 2014-01-08 | 苏州市阳澄湖现代农业产业园特种水产养殖有限公司 | Aquaculture sewage treating method |
| CN104920280A (en) * | 2015-06-23 | 2015-09-23 | 陈武昌 | Pearl cultivation device suitable for industrial aquaculture |
| CN105502802A (en) * | 2015-11-24 | 2016-04-20 | 南京农业大学 | Method for rapidly processing large-scale piggery wastes |
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- 2011-10-20 CN CN201110321188.6A patent/CN103058385B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103496820A (en) * | 2013-09-18 | 2014-01-08 | 苏州市阳澄湖现代农业产业园特种水产养殖有限公司 | Aquaculture sewage treating method |
| CN104920280A (en) * | 2015-06-23 | 2015-09-23 | 陈武昌 | Pearl cultivation device suitable for industrial aquaculture |
| CN104920280B (en) * | 2015-06-23 | 2017-06-06 | 陈武昌 | Suitable for the pearl culture device of industrial aquaculture |
| CN105502802A (en) * | 2015-11-24 | 2016-04-20 | 南京农业大学 | Method for rapidly processing large-scale piggery wastes |
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