Method for treating underground seawater used for aquiculture

Abstract

The invention belongs to a technological method for removing iron and manganese in underground seawater out of marine culture water. The method for treating underground seawater used for aquiculture comprises the following steps of: quick oxygenation treatment: carrying out oxygenation treatment by an oxygenation appliance and maintaining the pH value of a water body to be 7.0-7.8, wherein [O2] is not less than 0.40[Fe2+]; biological oxidation treatment: hanging a hairbrush-shaped three-dimensional elastic filtering material of a PE material in a corridor of a reaction pool and forming a biologic filter membrane at the surface of a filler; detention treatment: detaining an insoluble substance in the elastic filtering material by the elastic filtering material in the reaction pool; precipitation treatment: precipitating in the corridor with the average water flow rate of 10-20m / h and the oxidation time of 1.5-3h; floatation treatment: treating by a floatation device, removing the fine particles of the iron and the manganese, carrying out secondary oxygenation and separating and removing most of insoluble compounds; and sand grain filtration treatment: filtering cinder and quartz sand by a two-section type filtering material filtration pool. The invention can ensure the content of dissolved oxygen in water, maintains the balance and the stability of microorganisms in the biologic filtering material and the water quality, has lower investment and running cost and increases the benefit of a culture system.

Description

(1) Technical field [0001] The invention belongs to the field of seawater aquaculture water treatment, and in particular relates to a process for removing iron and manganese in underground seawater. (2) Background technology [0002] my country's seawater aquaculture industry is booming, but the water quality of my country's coastal seawater is generally difficult to meet the requirements of aquaculture. my country's coastal seawater aquaculture is increasingly using underground seawater as aquaculture water source. In particular, flounder and flounder farming in northern my country generally use seawater wells to extract underground seawater to obtain relatively high-quality aquaculture source water. Usually, underground seawater contains more or less iron and manganese, and breeding aquatic economic animals with groundwater rich in iron and manganese will bring great harm to the breeding objects. Among them, the oxidation process of ferrous manganese will make the water b...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a treatment process for underground seawater containing iron and manganese that meets the water quality requirements of aquaculture, so as to solve the problems of low iron and manganese removal efficiency, large floor space and high labor intensity in current underground seawater.

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