CN103058385B - Process for treatment of high density aquaculture sewage - Google Patents

Process for treatment of high density aquaculture sewage Download PDF

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Publication number
CN103058385B
CN103058385B CN201110321188.6A CN201110321188A CN103058385B CN 103058385 B CN103058385 B CN 103058385B CN 201110321188 A CN201110321188 A CN 201110321188A CN 103058385 B CN103058385 B CN 103058385B
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reactor
sewage
precipitation
biological
microorganism
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CN103058385A (en
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杨菁
管崇武
王振华
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Fishery Machinery and Instrument Research Institute of CAFS
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Fishery Machinery and Instrument Research Institute of CAFS
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological 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

A kind of processing method of processing high-density aquiculture sewage
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 while water surrounding day by day aging, that pollute has also restricted aquaculture and further developed.The abundant uses advanced technology of circulating water cultivation pattern and means, create the good living environment of fish, realizes high yield, high efficiency production and aquaculture wastewater zero release, and greatly improve land resources utilization rate, becomes the inexorable trend of aquaculture Sustainable development.Its main flow water purification style of this pattern is all using nitrogen a large amount of in water body, phosphorus substance as pollutent at present, adopt the water technologies such as physics, biology and means effectively to remove, thereby cause investment, running cost to remain high, especially for high-density breeding is produced, greatly restricted the further application of circulating water cultivation pattern.
Summary of the invention
The object 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, in it, add the Bacillus subtilus kind daughter bacteria liquid after activated cultivation, plant daughter bacteria liquid and aquaculture wastewater volume ratio: (1~3): 100; Bottom even in reactor arranges aerating apparatus, gas-water ratio: (2~2.5): 1, and dissolved oxygen: 2~3mg/L;
The high-density aquiculture sewage pumping in microorganism flocculation reactor fully mixes under blast aeration effect with the kind daughter bacteria liquid that is suspended state dropping into wherein, produce biological flocculant, decomposing organic matter, replicating microorganism, the hybrid reaction time is 0.8~1.2 hour;
The mixed solution producing in microorganism flocculation reactor, the precipitation-biological treatment reactor of flowing through.Precipitation-biological treatment reactor relies on natural ventilation oxygen supply, interior filling suspended biological filtrate, and packing fraction is 25~30%;
In precipitation-biological treatment reactor, carry out solid-liquid separation and the biochemical reaction of mixed solution.The settling producing is all concentrated discharge except partial reflux mud, and returned sluge is to microorganism flocculation reactor, and reflux ratio is 30~40%; Separate supernatant liquor under the suspended biological filtrate effect of upper strata soluble organic be able to further degraded, stop the reaction times be 0.8~1 hour; Water purification is back to culturing pool.
Microorganism flocculation, precipitation, biological treatment integrated technology that the present invention adopts purify high-density aquiculture sewage processing method, and microbiological coagulation method is applied to aquaculture wastewater pre-process.Microbiological coagulation method is a novel sewage disposal technology that begins one's study early 1990s and develop.It adopts through the bacterial strain of domestication, seed selection or structure nitrogen a large amount of in aquaculture wastewater, phosphorus substance is 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, with its special performance comprehensive utilization sewage resource, greatly reduces the organic loading of subsequent disposal.
Microorganism flocculation, precipitation, biological treatment integrated technology that the present invention adopts purify high-density aquiculture sewage processing method, have built precipitation-biological treatment integrated reacting system.Under certain residence time, reactive system had both completed the solid-liquid separation of disposing of sewage, and again the organism being dissolved in separation of supernatant was further degraded by being placed in the suspended biological filtrate under natural ventilating status in reactor.Suspended biological filtrate specific surface area is high, nothing is stopped up.
A kind of high-density aquiculture sewage processing method of processing of the present invention integrates premium properties, obtaining under stabilizing treatment effect prerequisite, effectively reduce investment running cost, and operational administrative is more easy.The present invention is applied to high-density aquiculture sewage disposal, and result shows: suspended solids SS clearance 47~56%, chemical oxygen demand COD clearance 52~65%.
Accompanying drawing explanation
Accompanying drawing 1 is to be process flow sheet of the present invention.
Embodiment
Embodiment 1:
Process a processing method for high-density aquiculture sewage, pump into high-density aquiculture sewage to microorganism flocculation reactor, in it, add the Bacillus subtilus kind daughter bacteria liquid after activated cultivation, plant daughter bacteria liquid and aquaculture wastewater volume ratio: 1:100; Bottom even in reactor arranges aerating apparatus, gas-water ratio: 2:1, dissolved oxygen: 2.2mg/L;
The high-density aquiculture sewage pumping in microorganism flocculation reactor fully mixes under blast aeration effect with the kind daughter bacteria liquid that is suspended state dropping into wherein, produces biological flocculant, decomposing organic matter, replicating microorganism, and the hybrid reaction time is 1 hour;
The mixed solution producing in 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 natural ventilation oxygen supply, interior filling polyethylene suspended biological filtrate, and packing fraction is 25%; The settling producing in precipitation-biological treatment reactor is all concentrated discharge except being partly refluxed to microorganism flocculation reactor, and returned sluge is to microorganism flocculation reactor, and reflux ratio is 30%;
Separate supernatant liquor under the floating stuffing effect of upper strata soluble organic be able to further degraded, stop the reaction times be 1 hour; Water purification is back to culturing pool.
Suspended solids SS clearance 53%, chemical oxygen demand COD clearance 58%.
embodiment 2:
Process a processing method for high-density aquiculture sewage, pump into high-density aquiculture sewage to microorganism flocculation reactor, in it, add the Bacillus subtilus kind daughter bacteria liquid after activated cultivation, plant daughter bacteria liquid and aquaculture wastewater volume ratio: 2:100; Bottom even in reactor arranges aerating apparatus, gas-water ratio: 2.3:1, dissolved oxygen: 2.5mg/L;
The high-density aquiculture sewage pumping in microorganism flocculation reactor fully mixes under blast aeration effect with the kind daughter bacteria liquid that is suspended state dropping into wherein, produce biological flocculant, decomposing organic matter, replicating microorganism, the hybrid reaction time is 1.2 hours;
The mixed solution producing in 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 natural ventilation oxygen supply, interior filling polyethylene suspended biological filtrate, and packing fraction is 30%; The settling producing in precipitation-biological treatment reactor is all concentrated discharge except being partly refluxed to microorganism flocculation reactor, and returned sluge is to microorganism flocculation reactor, and reflux ratio is 35%;
Separate supernatant liquor under the floating stuffing effect of upper strata soluble organic be able to further degraded, stop the reaction times be 1 hour; Water purification is back to culturing pool.
Use the present invention to process high-density aquiculture sewage, 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 microorganism flocculation reactor, in it, add the Bacillus subtilus kind daughter bacteria liquid after activated cultivation, plant daughter bacteria liquid and aquaculture wastewater volume ratio: (1~3): 100; Bottom even in reactor arranges aerating apparatus, gas-water ratio: (2~2.5): 1, and dissolved oxygen: 2~3mg/L;
The high-density aquiculture sewage pumping in microorganism flocculation reactor fully mixes under blast aeration effect with the kind daughter bacteria liquid that is suspended state dropping into wherein, produce biological flocculant, decomposing organic matter, replicating microorganism, the hybrid reaction time is 0.8~1.2 hour;
The mixed solution producing in microorganism flocculation reactor, the precipitation-biological treatment reactor of flowing through; Precipitation-biological treatment reactor relies on natural ventilation oxygen supply, interior filling suspended biological filtrate, and packing fraction is 25~30%;
In precipitation-biological treatment reactor, carry out solid-liquid separation and the biochemical reaction of mixed solution; The settling producing is all concentrated discharge except partial reflux mud, and returned sluge is to microorganism flocculation reactor, and reflux ratio is 30~40%; Separate supernatant liquor under the suspended biological filtrate effect of upper strata soluble organic be able to further degraded, stop the reaction times be 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, in precipitation-biological treatment reactor, the floating stuffing of filling is polyethylene suspended biological filtrate.
CN201110321188.6A 2011-10-20 2011-10-20 Process for treatment of high density aquaculture sewage Expired - Fee Related CN103058385B (en)

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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
CN104920280B (en) * 2015-06-23 2017-06-06 陈武昌 Suitable for the pearl culture device of industrial aquaculture
CN105502802B (en) * 2015-11-24 2019-03-05 南京农业大学 A kind of method of quick treatment scale piggery waste waste water

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JP2553727B2 (en) * 1990-02-13 1996-11-13 明治製菓株式会社 Useful microorganisms and their use
CN1396123A (en) * 2001-07-12 2003-02-12 华东师范大学 Preparing process and application of composite biologic water cleaner containing living bacteria
CN1424267A (en) * 2003-01-09 2003-06-18 同济大学 Chemicobiological flocculation treating method for urban sewage with suspending packing bed
CN1552644A (en) * 2003-06-06 2004-12-08 同济大学 Small-town sewage treating process
CN1597563A (en) * 2003-09-19 2005-03-23 中国科学院微生物研究所 Water cleaning bacterial agent for industrial seedling growing and breeding circuluted sea water
CN101200337A (en) * 2006-12-12 2008-06-18 上海水产大学 Water treatment method of circulating-water culture system
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JP2553727B2 (en) * 1990-02-13 1996-11-13 明治製菓株式会社 Useful microorganisms and their use
CN1396123A (en) * 2001-07-12 2003-02-12 华东师范大学 Preparing process and application of composite biologic water cleaner containing living bacteria
CN1424267A (en) * 2003-01-09 2003-06-18 同济大学 Chemicobiological flocculation treating method for urban sewage with suspending packing bed
CN1552644A (en) * 2003-06-06 2004-12-08 同济大学 Small-town sewage treating process
CN1597563A (en) * 2003-09-19 2005-03-23 中国科学院微生物研究所 Water cleaning bacterial agent for industrial seedling growing and breeding circuluted sea water
CN101200337A (en) * 2006-12-12 2008-06-18 上海水产大学 Water treatment method of circulating-water culture system
CN101475249A (en) * 2009-01-19 2009-07-08 浙江理工大学 Method for treating cultivation wastewater by using microbial flocculant and compound fertilizer obtained thereby

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