Immersed water treatment device of inner circulating membrane coagulation reactor

Abstract

The invention discloses an immersed water treatment device of an inner circulating membrane coagulation reactor, belonging to the field of water treatment. The immersed water treatment device of the inner circulating membrane coagulation reactor comprises an inner circulating membrane coagulation reactor, wherein the main body of the inner circulating membrane coagulation reactor is a reaction tank divided into an upper part and a lower part; the upper part is internally provided with an inner circulating cylinder of which the upper end and the lower end are opened; the inner circulating cylinder is internally provided with a membrane assembly on which a water outlet is arranged; an aeration pipe or an aeration disk is arranged below the membrane assembly; and the upper part of the reaction tank is provided with a turbulent flow member arranged between the inner wall of the reaction tank and the cylinder wall of the inner circulating cylinder. The water treatment device can be used for efficiently relieving pollution of the membrane in the water treatment device and removing pollutants in water and also has the advantages of small occupation area and low construction investment and running cost.

Description

technical field [0001] The invention relates to a water treatment device for a submerged internal circulation membrane coagulation reactor, which belongs to the field of water treatment. Background technique [0002] Water is the source of life, one of the indispensable elements in economic development, industrial and agricultural production, and the material basis of human existence. Over the past few decades, with the reform and opening up of our country and the rapid development of industrialization, various industrial wastewater and domestic sewage with complex components often directly enter the water body without reaching the standard, resulting in a sharp decline in the quality of drinking water sources. Traditional drinking water purification technology is facing many problems. challenge. In addition, my country is a country seriously short of water, the per capita share of water resources is only 1 / 4 of the world's average level, and the water consumption per 10,00...

AI Technical Summary

Problems solved by technology

[0005] However, the existing membrane coagulation reactor technology simply combines coagulation and membrane separation, and there are the following problems: ① For the split membrane coagulation reactor technology in which the coagulation reaction and membrane separation are two independent units, the water body When passing through the pipeline between the two, the larger flocs formed by coagulation are prone to breakage, which affects the coagulation effect, and there is a problem that the device occupies a large area; the coagulation reaction and membrane separation are completely placed The existing integrated membrane coagulation reactor technology in one reactor requires different hydraulic conditions for the mixing stage and flocculation stage of the coagulation reaction, so the mixing or flocculation effect is not ideal, and the amount of coagulant is large. Problem; At the same time, due to insufficient coagulation, the concentration of fine flocs or colloids that are easy to cause membrane fouling is difficult to effectively coagulate, and the concentration gradually increases, which can easily lead to membrane fouling and affect membrane flux and membrane life.

②For the split-type membrane coagulation reactor and the existing integrated membrane coagulation reactor, all the flocs formed by coagulation enter the membrane separation part, and the concentration of flocs is high and gradually increases, which will easily lead to membrane fouling and affect the efficiency of the membrane. Flux and Membrane Lifetime

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