Mariculture wastewater discharge and disposal method and device

Abstract

The invention provides a mariculture wastewater discharge and disposal method. The method comprises the steps of A, conducting primary organic matter purification through reaction of mariculture wastewater flowing out of a culture pond in a biochemical pool; B, conducting primary purification and pollution discharge on mariculture wastewater obtained from the step A in a water tank; C, conducting ionization and organic matter decomposition on mariculture wastewater obtained from the step B by means of an electrocatalytic oxidation device; D, filtering out suspended pollutants in mariculture wastewater obtained from the step C by means of a filtering basin, and discharging up-to-standard mariculture wastewater. The technology is high in feasibility, economical and practical, no agentia is needed, no complicated biological purification mode is needed, equipment is simple, using is convenient, toxic and harmful substances affecting the ecological environment of a sea area including organic matter, bacteria, ammonia nitrogen, suspended matter and COD in mariculture wastewater can be effectively discharged, and mariculture wastewater which is purified to meet the discharge standard is discharged. Under the action of ionization, bacteria, viruses and algae in circulating seawater are killed due to DNA damage, and the kill ratio can be over 90%.

Description

Technical field: [0001] The invention relates to the technical field of water treatment for aquaculture, in particular to a method and equipment for treating wastewater discharged from aquaculture seawater. Background technique: [0002] my country has a long coastline and rich seawater resources, and it is better than aquaculture. After seawater is used, its composition is complex and seriously polluted. The water also contains a large number of poisonous and harmful substances such as bacteria, viruses, ammonia nitrogen, nitrite, and organic matter. The existence of these conditions, the recycling of seawater can lead to slow growth of cultured organisms, low survival rate, and even the death of all cultured organisms, which seriously threatens the quality and safety of circulating seawater aquaculture, and brings economic losses. Aquaculture sewage has its common features: first, the pollutants are mainly organic matter, and the nitrogen and phosphorus indicators in the ...

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Problems solved by technology

This purification method uses multiple baffled water celery surface flow wetlands to plant hybrid No. 16 water celery to purify the tail water, and the operation is troublesome.

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