Advanced treatment device and method of micropolluted organic sewage

Abstract

The invention discloses an advanced treatment device and method of micropolluted organic sewage. The advanced treatment device comprises an adjusting tank, an oxidization tank, an aeration tank and a coagulation and separation tank which are communicated, wherein the upper lateral wall of the adjusting tank is provided with a water inlet valve, and the top of the adjusting tank is communicated with an acid feeding pot; the top of the oxidization tank is respectively communicated with an oxidant feeding pot and a catalyst feeding pot; the top of the aeration tank is communicated with an alkaline feeding pot; the top of the coagulation and separation tank is respectively communicated with a coagulant aid feeding pot and a water outlet pump; and the lateral wall of the lower part of the coagulation and separation tank is communicated with a sludge discharge pump. The method comprises the following steps of: (1), discharging water or micropolluted water into the adjusting tank; (2) addingacid to the adjusting tank; (3) adding hydrogen peroxide to the oxidization tank, respectively adding catalysts and stirring; (4) feeding alkaline into the aeration tank for aeration; (5) adding a coagulant aid to the coagulation and separation tank; (6) separating water and flocculent bodies; and (7) removing sludge from the separated flocculent bodies and separating water for recycling to obtain the advanced treatment circulating process of the organic sewage. The invention has the advantages of simple structure, running reliability, low cost and convenience for operation.

Description

technical field [0001] The invention relates to a technology for advanced treatment of slightly polluted organic sewage, in particular to a device capable of reusing after advanced treatment of slightly polluted organic sewage and a method for advanced treatment of slightly polluted water. Background technique [0002] With the development of the economy, the demand for water resources in all aspects of society has further increased, especially in the industrial field, there are many industries with large water consumption and strict water quality indicators. Enterprises with large-scale boiler installations such as heat power and electric power use fresh tap water for desalination and other treatment for boiler water. The daily water consumption is very large. Under the background of the current urban development and increasingly tense water resources, enterprises have been greatly restricted in expanding regeneration, reducing material consumption and controlling operating...

AI Technical Summary

Problems solved by technology

[0008] 1. The degree of removal of organic matter is very limited, and the removal rate of COD and BOD in incoming water is average;

[0009] 2. The investment and operation costs are relatively large, the management is relatively complicated, and the stability of the process is poor;

[0010] 3. The application of the above-mentioned process is currently limited, and it is only used in some reclaimed water reuse fields with small water volume and low water quality index requirements. It is not applicable to units with large water consumption and high water quality requirements.

[0011] At present, the advanced oxidation method can only treat high-concentration polluted organic sewage. Therefore, it is an urgent need to provide a micro-polluted organic sewage advanced treatment technology, which can reuse micro-polluted organic sewage after advanced treatment. Technical issues resolved

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