A kind of mariculture wastewater treatment process

Abstract

The invention discloses a mariculture wastewater treatment process and aims to provide a mariculture wastewater treatment process capable of circularly treating and utilizing aquaculture wastewater. The process comprises a primary settling pond, a filter tank, a secondary settling pond, mechanical filtering equipment, an alga purification pond, an ozone disinfection pond and an oxygenation pond, wherein the primary settling pond is communicated with the filter tank; the filter tank is communicated with the secondary settling pond; the mechanical filtering equipment comprises a water suction pipeline, a water pump and a first drainage pipe; one end of the water suction pipeline is connected with the secondary settling pond while the other end of the water suction pipeline is connected with a water inlet of the water pump; a water inlet end of the first drainage pipe is communicated with a water outlet of the water pump; a water outlet end of the first drainage pipe is connected with the alga purification pond; the alga purification pond is communicated with the ozone disinfection pond, and the ozone disinfection pond is communicated with the oxygenation pond.

Description

technical field [0001] The invention relates to the field of aquaculture wastewater treatment, in particular to a process for treating marine aquaculture wastewater. Background technique [0002] In recent years, with the rapid development of high-density artificial aquaculture and the aggravation of aquaculture environmental pollution, the degree of pollution of aquaculture water far exceeds the purification capacity of the water itself. Pollutants formed by residual feed and fish excrement in the process of artificial aquaculture cause water body self-pollution and even water quality deterioration, manifested as: severe eutrophication of water body, increase of suspended solids in water body, biological oxygen demand, chemical oxygen demand , nitrite nitrogen, etc. content increased, dissolved oxygen decreased. [0003] The traditional aquaculture wastewater treatment method is to discharge the aquaculture water and inject it into a fresh water body; this kind of aquacult...

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Problems solved by technology

[0007] Another purpose of the present invention on the basis of the first purpose is to provide a process for the treatment of marine aquaculture wastewater in order to overcome the deficiencies in the existing mechanical filtration devices. The mechanical filtration equipment in the process is easy to operate and has a high utilization rate of the equipment. The filtration effect is good, which can effectively clean the suspended solid particles in the aquaculture wastewater; and can effectively solve the problem that the filter layer is easy to block during the filtration of suspended solid particles, causing the filter layer to fail, reducing the filtration efficiency and the filtration effect.

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