Water treatment method of circulating-water culture system

A recirculating aquaculture and water treatment technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. High energy consumption and other problems, to achieve the effect of strong adaptability, low investment in infrastructure, and low energy consumption in operation

Inactive Publication Date: 2008-06-18
SHANGHAI OCEAN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low treatment efficiency, high treatment cost, large treatment energy consumption and complex configuration of water treatment devices affecting the degree of integration in the prior art, and to provide an efficient, economical and practical circulating water Methods of water treatment in aquaculture systems

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  • Water treatment method of circulating-water culture system

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Embodiment Construction

[0009] The method for implementing the water treatment of the recirculating aquaculture system (see the accompanying drawings), firstly fill the filling type biological flocculation sedimentation unit 2 with the aquaculture water to be treated, then add the domesticated activated sludge with strong adsorption and flocculation ability, and the sludge concentration After the high-density three-dimensional elastic packing layer 3 is successfully filmed, the normal water inflow begins; the aquaculture water to be treated flows directly from the lower water inlet 1 into the filled biological flocculation sedimentation unit 2, and the culture The water flows upward through the high-density three-dimensional elastic packing layer 3, the hydraulic retention time is 60min, and the dissolved oxygen concentration is lower than 0.5mg / L. In the packed bioflocculation precipitation unit, under low oxygen conditions (DO<0.5mg / L), bacteria absorb soluble substances and convert them into cytopl...

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Abstract

The invention relates to a treatment method of recirculation aquaculture system, relating to the aquaculture treatment, which solves the problem about high density aquaculture water treatment device integration. The invention adopts filling type bio-flocculation sedimentation, biological film filtering and water quality stabilizing adjusting, the invention is characterized in that: the 2 / 3 of the upper part of the filling type bio-flocculation sedimentation is filled with polyolefin and polyamide composite filling layer for removing the organic substances, suspended substances, nitrogen, and phosphor, the 1 / 3 of the lower part of the filling type bio-flocculation sedimentation is the sludge collection area; the 2 / 3 of the upper part of the biological film is filled with a filtering filling layer made of poly(4-vinylpyridine)-halide for realizing deep purification of aquaculture, the 1 / 3 of the lower part of the biological film is the micro-oxygen aeration / sludge collection area, the sludge enters the sludge collection area of the filling type bio-flocculation sedimentation from the bottom of the biological film filtering unit; the water quality stabilizing adjusting unit filled with a filling layer mixed by clinoptilolite, vermiculite, shale and limestone for realizing caustic balance and ion compensation of aquaculture water quality. The invention is used for aquaculture integrated biological treatment.

Description

Technical field: [0001] The present invention relates to a water treatment method for aquaculture. Background technique [0002] In the circulating aquaculture system, physical, biological and chemical methods are used to realize the purification and recycling of aquaculture water. The process includes solid-liquid separation, biological filtration, and foam separation and purification units. However, through the assembly and configuration of the existing water purification units, It is difficult to reduce the scale of the water treatment device and the energy consumption of the system operation, and it is difficult to improve the integration degree of the water treatment unit. [0003] At present, chemical biological flocculation process, aerobic biological flocculation adsorption process, biological flocculation-oxidation treatment process have been applied to a certain extent in urban domestic sewage, industrial wastewater treatment and other fields. Its main mechanism i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/10C02F1/52C02F3/30
CPCY02W10/10
Inventor 谭洪新罗国芝孙大川朱浩
Owner SHANGHAI OCEAN UNIV
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