Recirculating aquaculture water treatment system and method

A technology of recirculation breeding and treatment system, applied in the field of water treatment system, can solve the problems of high SS in the effluent, difficult to remove spores, parasites and other substances, reduce operating costs, improve effluent quality and process stability, and prevent clogging of membranes tube effect

Inactive Publication Date: 2012-06-27
JIANGSU JIUWU HITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: aiming at the problems existing in the existing seawater recirculation culture water treatment system, especially in order to overcome the problems such as the high SS of the effluent after the biochemical treatment of the seawater recirculation culture water, and the difficult removal of spores, parasites and other substances, the excellent ceramic membrane is used Material properties and separation properties are used for mariculture circulating water treatment, further improving the quality of circulating water, prolonging the service life of ceramic membranes, and ensuring the stable operation of the mariculture circulating water system to the greatest extent

Method used

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  • Recirculating aquaculture water treatment system and method
  • Recirculating aquaculture water treatment system and method

Examples

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Embodiment 1

[0022] Such as figure 1 Shown, a kind of treatment system of circulating aquaculture water, comprises culture tank I, adjustment tank II, bioreactor III, buffer tank IV and filter unit VII, culture tank I, adjustment tank II, bioreactor III, buffer tank IV It is connected with the filter unit in turn, and there is a grid in the regulating tank II, and the filter unit VII is composed of a pre-filter device V and a ceramic membrane filter VI. The water port is connected with the ceramic membrane filter VI water inlet, the ceramic membrane filter VI water outlet is connected with the culture tank I water inlet, and the ceramic membrane concentrated solution outlet of the ceramic membrane filter VI is connected with the ceramic membrane concentrated solution inlet of the buffer tank IV. The ceramic membrane pore size of the ceramic membrane filter is 20nm.

Embodiment 2

[0024] This embodiment is basically the same as Embodiment 1, except that the pore diameter of the ceramic membrane filter is 100 nm.

Embodiment 3

[0026] Such as figure 1 As shown, a treatment method for circulating aquaculture water, the circulating water a of the aquaculture tank I enters the regulating tank II, the regulating pond is provided with a grille, and air b is blown into the regulating pond II for aeration, and the effluent of the regulating pond enters the biological reaction The effluent c of bioreactor III and bioreactor III enters the buffer tank IV, the effluent of the buffer tank enters the pre-filter device V, large particles and biological flocs are removed in the pre-filter device V, and the effluent d of the pre-filter device V enters the ceramic membrane with a pore size of 50nm The ceramic membrane filter VI removes colloids, bacteria, spores and other small molecules. The ceramic membrane filter effluent e enters the culture tank VI, the concentrated liquid f returns to the buffer tank, and the concentrated liquid g in the buffer tank IV is discharged regularly. After being treated by the cerami...

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Abstract

The invention relates to a recirculating aquaculture water treatment system and a method; the recirculating aquaculture water treatment system comprises an aquaculture tank, a regulating reservoir, a bio-reactor, a buffer tank and a filter unit; the aquaculture tank, the regulating reservoir, the bio-reactor, the buffer tank and the filter unit are sequentially connected; a grille is arranged in the regulating reservoir; the recirculating aquaculture water treatment system and the method are characterized in that: the filter unit comprises a pre-filtration unit and a ceramic membrane filter; the water outlet of the buffer tank is connected with the water inlet of the pre-filtration device; the water outlet of the pre-filtration device is connected with the water inlet of the ceramic membrane filter; and the ceramic membrane concentrate outlet of the ceramic membrane filter is connected with the ceramic membrane concentrate inlet of the buffer tank IV.

Description

technical field [0001] The invention relates to a water treatment system and method, in particular to a treatment system and method for seawater circulating aquaculture water. Background technique [0002] Industrial mariculture is an important means of mariculture. High-density aquaculture needs to be fed a large amount of feed, a considerable part of which cannot be eaten by fish and becomes pollutants. Excessive excrement of fish is also a major pollutant. These pollutants contain organic matter such as carbon, nitrogen, and phosphorus, which makes the water body eutrophic and greatly exceeds the self-purification ability of the water body. The oxidative decomposition of a large amount of organic matter consumes the dissolved oxygen in the water body, and the main components of the decomposition products are ammonia nitrogen and other harmful substances, which are prone to cause a large number of pathogenic microorganisms to multiply, posing a huge threat to farmed fish....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 彭文博苏浩仲兆祥张春刘飞
Owner JIANGSU JIUWU HITECH
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