Harmless disposal device for marine aquaculture wastewater and seawater aquatic product processing wastewater

Abstract

The invention relates to a harmless disposal device for marine aquaculture wastewater and seawater aquatic product processing wastewater. The harmless disposal device comprises a settling pond, a filtering box, an electrolytic tank, a water feeding pump, a direct current stabilized power supply and an activated carbon adsorption tank; the filtering box is connected with an outlet of the settling pond; a water outlet of the filtering box is connected with a water inlet of the electrolytic tank through the water feeding pump; the water outlet of the electrolytic tank is connected with the waterinlet of the activated carbon adsorption tank. The device and technology provided by the invention can realize the sterilization, removal of ammonia nitrogen, nitrite, nitrate, COD, total organic carbon, and the like, and a certain removing effect on total phosphorus, heavy metal, organic pollutants, and the like, in marine aquaculture wastewater, and can realize the standardized discharge or recycling of the treated wastewater. An automatic operation system is designed for the device, so that the automatic operation can be realized. The device occupies less area, has high treating efficiencyand is economical and low-cost.

Description

technical field [0001] The invention belongs to the field of harmless treatment of mariculture wastewater and seawater product processing wastewater, in particular to a harmless treatment device for mariculture wastewater and seawater product processing wastewater. Background technique [0002] In recent years, my country's marine aquaculture industry has developed rapidly, and the area and scale of aquaculture are increasing. At the same time, there are also some problems in the breeding process. Because my country's mariculture mostly adopts high-density farming methods, a lot of bait is put in, the water body has a high bearing capacity, and the frequency of water changes is high. The pollution of aquaculture water leads to an increase in the concentration of ammonia nitrogen, nitrite, nitrate, COD, and organic matter. At the same time, it is easy to breed bacteria, causing deterioration of the water body, and causing toxicity to aquaculture organisms. Wastewater containi...

AI Technical Summary

Problems solved by technology

For example, the physical removal method mainly removes solid pollutants, and the removal effect on dissolved inorganic nitrogen is poor; the chemical treatment method needs to add reagents, which often produces secondary pollutants, which may be more difficult to remove

In the process of treating wastewater from aquatic product processing, activated sludge and biofilm method have high cost, poor effluent quality, and large amount of sludge.

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