Water treatment method for cyclic purification of shrimp breeding wastewater

Abstract

The invention discloses a water treatment method for cyclic purification of shrimp breeding wastewater. The water treatment method adopts a purification system which is used for pre-purifying microorganisms of a shrimp culture pond and is sequentially connected with the shrimp culture pond through a water pipe; the purification system comprises a back-flushing physical filter tank, a settling pond, a plant filter chamber, a biological purification pool, a water pump, a water storage buffer pool and a water optimization pool for ozone / ultraviolet sterilization, oxygenation and thermoregulation; and an outfall of the culture pond is sequentially communicated with the back-flushing physical filter tank, the settling pond, a back-flushing activated carbon filter tank, the plant filter chamber, a back-flushing biological purification pool, the water storage buffer pool and the water optimization pool for ozone / ultraviolet sterilization, oxygenation and thermoregulation through a runner.

Description

technical field [0001] The invention relates to a high-efficiency circulation breeding system, which belongs to the technical field of breeding. Background technique [0002] The water pollution of aquatic animal breeding is an increasingly serious problem, especially the artificial breeding of prawns. Due to the high breeding density, large amount of bait, and large amount of metabolic waste in the artificial breeding of prawns, the phenomenon of eutrophication in the breeding water is becoming more and more serious. Most shrimp farms (including earthen pond culture and high-level pond culture) discharge the wastewater and waste directly during the breeding process and after the culture without any treatment, causing certain pollution to the farm and the surrounding environment and even the general environment. The ecological environment has been destroyed, and the possibility of outbreaks of prawn diseases has been increased. [0003] At present, the following methods are...

AI Technical Summary

Problems solved by technology

For example: method 1) can reduce the soluble harmful components (ammonia nitrogen, nitroso salt, etc.) At the same time, fish and shellfish themselves must discharge certain metabolic waste; method 3) and method 4) can remove most of the suspended matter, but cannot reduce the soluble harmful components in the aquaculture water

[0004] Among the purification methods currently used for aquaculture sewage, there is no purification method that can comprehensively purify suspended solids, soluble harmful components and other pollutants in sewage, taking into account the harmful substances in aquaculture sewage

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