Integrated sewage purifying system for aquaculture and purifying method

Abstract

The invention relates to an integrated sewage purifying system for aquaculture. The system comprises a three-phase inner circulating fluidized bed on an upper layer and an electrolytic coagulation purifying unit on a lower layer, which are detachably fixed and sealed and are communicated with each other, wherein the three-phase inner circulating fluidized bed comprises an outer cavity of the fluidized bed and a flow guide drum fixedly arranged in the outer cavity; a biological filter material carrier is arranged in the three-phase inner circulating fluidized bed; the upper part of the outer cavity of the fluidized bed is higher than the flow guide drum; a water outlet is formed at the top of the outer cavity while a screen sieve is arranged at the bottom; the mesh size of the screen sieve is less than the diameter of the biological filter material carrier; the electrolytic coagulation purifying unit comprises an outer cavity of the electrolytic coagulation purifying unit; polar plates which are vertically distributed in parallel and in equal height are arranged in the outer cavity of the electrolytic coagulation purifying unit; the horizontal cross section of the polar plate area is located within the covering scope right under the flow guide drum; a water inlet is formed on the lower side of the outer cavity of the electrolytic coagulation purifying unit, and a draining port is formed at the bottom; and the polar plates are arranged as aluminum plates. The integrated sewage purifying system and the water in a cultivation tank can form power circulation.

Description

technical field [0001] The invention relates to an aquaculture sewage purification system, in particular to an integrated aquaculture sewage purification system and a purification method, belonging to the technical field of aquaculture sewage purification. Background technique [0002] The recirculating aquaculture system has the advantages of energy saving, emission reduction, water saving, land saving, strong controllability, low risk intensification, safe and reliable product quality, etc. It is the development direction of the current advanced productivity of aquaculture. [0003] The key to the recirculating aquaculture system is to achieve good control of the aquaculture environment, which depends on the water treatment link of the system, including the treatment effect of equipment and facilities on the aquaculture water body and the maintenance of the water body ecosystem. The traditional circulating aquaculture water treatment system consists of physical filters, bi...

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved in the present invention are: in the existing aquaculture sewage circulation system, the functions of each water treatment and purification unit are relatively single, the system is complex and occupies a large area, the investment and energy consumption are high, management is difficult, and the efficiency of the utilization of aquaculture purification resources Low, which restricts the further application and promotion of recirculating aquaculture system

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