System for ecologically treating aquaculture wastewater

Abstract

The invention relates to a system for ecologically treating aquaculture wastewater, which comprises a primary storage pool, an accident pool, a solid-liquid separation zone, an earthworm composting zone, a regulation sedimentation pool, an anoxic pool, a gas collection system, an OAO system, a secondary sedimentation pool, an artificial natural layer filter pool and an impounding reservoir. The system has the advantages of 1, low investment cost, low operation cost, less quantity of energy-consuming members; 2, simple process, convenience for implementation, good generality, capability of adapting to the treatment of the aquaculture wastewater of different aquaculture occasions and aquaculture cells; 3, high treatment efficiency and capability of enabling effluent to reach the requirementof emission when the standard is met; 4, simpleness in maintenance, periodic spoil disposal, periodical inspection, no need of operation of specially-assigned person; 5, capability of generating a certain economic benefit while the aquaculture wastewater is treated; 6, high environment protection degree because rice and wheat straws, coconut shells and tree barks, which are discarded in countries, are recycled; and 7, a certain landscape value, wherein valuable products include an organic fertilizer, earthworms and methane; and grasses, trees and vegetations which are enjoyed by people can beplanted.

Description

technical field [0001] The invention relates to the field of agricultural environmental protection, in particular to an ecological treatment system for aquaculture wastewater. Background technique [0002] With the continuous development of social economy and science and technology, the pace of new rural construction in my country is accelerating, and livestock and poultry breeding is rapidly developing in the direction of large-scale development. The large amount of wastewater generated in the process of breeding development can no longer be consumed by the self-purification ability of the land. , have caused serious pollution to the rural air, water and other environments. [0003] The aquaculture wastewater in breeding sites mainly includes pig urine and feces, flushing water, food residues, etc., and is rich in organic pollutants such as carbon, nitrogen, phosphorus, and sulfur. These pollutants are the main factors causing environmental pollution and are also our The ma...

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Problems solved by technology

[0004] The aquaculture wastewater treatment process mainly relies on anaerobic technology, which can convert organic carbon into methane gas and carbon dioxide gas. At the same time, how to effectively collect and utilize biogas and biogas residue has become a problem to be solved at the same time. Of course, pure anaerobic Technical treatment or simply combined with ordinary aerobic technology has a certain effect on the treatment of aquaculture wastewater. As far as the current technology is concerned, the treatment effect is not ideal, and it cannot respond to the national "energy saving and emission reduction" policy.

[0005] Due to the late start of my country's aquaculture wastewater treatment technology, the technology is relatively backward, and the treatment technology of other countries is not in line with my country's national conditions, so it cannot be directly used for reference.

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