Micro-nano active oxygen treatment method of sewage

Abstract

The invention discloses a micro-nano active oxygen treatment method of sewage, comprising the following steps: a, physically treating: settling the sewage to remove sand; b, separating: carrying out micro-nano bubble oxidization separation on the sewage, wherein the diameters of the bubbles are smaller than 50 microns; c, biologically treating: carrying out nitrification and denitrification reaction on the sewage which is subjected to the micro-nano bubble treatment and flows into a reaction pool with bionic biological carrier; and d, discharging: discharging under the conditions that the COD (chemical oxygen demand) of the sewage reaches 98%. The micro-nano active oxygen treatment method of the sewage thoroughly eliminates all organic pollution sources in the sewage and realizes the aim of purifying and reducing the sewage.

Description

technical field [0001] The invention relates to a micro-nano active oxygen treatment method for sewage, which belongs to the field of sewage treatment and is applicable to sewage treatment in cities or villages. Background technique [0002] The total annual urban sewage discharge in my country has reached 73.5 billion tons. Nearly 60% of cities have no sewage treatment plants, and rural areas generally have no sewage treatment facilities. Severely oversaturated, rivers and lakes polluted by sewage abound, and water pollution has reached a critical state. [0003] The current sewage treatment technology in my country is seriously backward. Most of the sewage treatment technologies used in my country are obsolete technologies that have been eliminated in the world. Subsequent issues and comprehensive environmental management issues have not been considered comprehensively, resulting in sewage sediment problems, frequent outbreaks of water pollution, etc., and the country's la...

AI Technical Summary

Problems solved by technology

[0005] However, this technology still has the following disadvantages: when the total amount of pollutants entering the water exceeds the self-purification capacity of the dissolved oxygen content in the water, the dissolved oxygen content in the water will be consumed after oxidative decomposition of some pollutants, and the remaining pollutants will be dissolved, The two forms of suspension combine with water molecules to form a huge colloidal polymeric molecular group. In this colloidal polymeric molecular group, all water molecules are closely combined with pollutants through chemical bond connection and charged particle electrical adsorption. This combination As a result, the external chemical bonds and electrical adsorption gaps of water molecules are occupied by other pollutant molecules and lose all activity and the ability to combine with other substances. Even if forced aeration and oxygen are introduced, it cannot be directly oxidized and decomposed.

This huge colloidal polymer cluster permeates the entire water area, causing the entire water area to lose all its dissolved oxygen capacity, and the self-purification ability of the water area completely disappears.

The use of chemical agents can only temporarily remove the connection between some pollutants and the water, but these agents form a new connection with the water, and also do not create a space for oxygen to dissolve in the water, so such waters can only become more and more polluted. Seriously, this is the result of using chemical means to control and pollute more

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