More optimized high-turbidity sewage treatment process

Abstract

The invention discloses a more optimized high-turbidity sewage treatment process which comprises a raw water inlet valve F1, an ultrafiltration membrane water producing valve F2, a water backwashing water inlet valve F3, a water backwashing upper discharge valve F4, a water backwashing lower discharge valve F5, a gas scrubbing air inlet valve F6, a gas backwashing air inlet valve F7, a forward flushing water inlet valve F8 and tubular membrane equipment, the tubular membrane equipment is connected with the gas backwashing air inlet valve F7, the forward flushing water inlet valve F8 and an air pump through a first pipeline, and the high-turbidity sewage treatment process comprises the following steps: forward flushing, water preparation, gas washing, gas backwashing, overwater backwashing, underwater backwashing, forward flushing and circulation. According to the invention, the water inlet path of flushing is corrected, so that the problem of blockage of the membrane module can be greatly reduced, and the working time and service life of the membrane module can be prolonged; one air backwashing is added, so that the membrane component can be cleaned in all directions, impurities attached to the surface of the membrane can be cleaned more effectively and comprehensively, the filtering resistance is reduced, and the filtering flux is recovered.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a more optimized high-turbidity sewage treatment process. Background technique [0002] In the face of sewage with high turbidity and high suspended solids, the tubular membrane can effectively separate the macromolecular suspended solids and water molecules in the energy water. In the old tubular membrane equipment process, due to the long-term treatment of sewage with high turbidity and high suspended solids and the cleaning function of the old process is not comprehensive, it often leads to increased frequency of chemical cleaning of tubular membrane modules, and even more serious Membrane modules will be damaged and membrane modules need to be replaced, which greatly reduces the cost and time of high turbidity and high suspended solids sewage treatment. [0003] There are two main problems in the current process, one: the particles remaining on the membrane module c...

AI Technical Summary

Problems solved by technology

Forward flushing will make some impurities more and more tightly fixed on the membrane module, so this kind of flushing is not perfect for cleaning the membrane module

[0005] Secondly, in the gas scrubbing process in the original process, the air intake is from the bottom of the ultrafiltration membrane, and the pollutants on the surface of the membrane are removed by shaking the membrane filaments with gas. The pollutants on the surface of the membrane are removed very well, and the vibration of the upper membrane is greatly reduced due to the loss of energy consumption due to the gas flowing through the upper membrane, so the effect of removing impurities will also be greatly reduced, and the comprehensive cleaning cannot be achieved. Effect

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