Air-flotation and membrane-filtration purification system

Abstract

The invention relates to water conditioning constructional work in a water purification plant and particularly relates to an air-flotation and membrane-filtration purification system which is divided into a water buffering region, a water distribution region, an air-flotation contact region and an air-flotation separation and membrane-filtration water outlet region, wherein a micro-bubble generating device and a gas-solublized water conveying pipeline are connected and distributed in the air-flotation contact region; the air-flotation separation and membrane-filtration water outlet region is provided with a conical mud bucket, a supporting beam and an immersed membrane module from bottom to top; a slag scraping machine is capable of walking on a guide rail distributed on the side wall of a pool; a slagging groove is formed on a side wall opposite to the water inlet of the pool. The air-flotation and membrane-filtration purification system has the advantages of organically combining an air-flotation process with an ultrafiltration membrane filtration process, being capable of treating low-turbidity or high-algae water, and meanwhile being small in occupied space, simple in structure, low in civil engineering construction cost, high in load resistance capacity, low in auxiliary water ratio, low in operating cost and simple in automatic control.

Description

technical field [0001] The invention relates to a water quality treatment device for a water purification treatment plant and a reclaimed water reuse plant, and in particular provides an air flotation membrane filtration purification system. Background technique [0002] At present, when the turbidity of the water source of the water purification plant is low or the algae is high, the technology of air flotation and filtration is often used. Existing water plants often build separate air flotation tanks, using the partial reflux dissolved air flotation method. The bottom of the air flotation separation zone of the air flotation tank is equipped with a perforated water collection pipe to collect water, and the upper part is an empty tank, which is a serious waste of space. The filtration process after air flotation often adopts sand filter or ultrafiltration membrane filtration. The civil structure of the sand filter is relatively complex and occupies a large area. The filter...

AI Technical Summary

Problems solved by technology

Traditional ultrafiltration membrane filtration technology has too many pipelines and valves, complex control, troublesome maintenance, easy leakage of the system, and a large footprint

Now the submerged membrane filtration technology is gradually developed and applied. The ultrafiltration membrane is made into several components and placed in a pool, but there is a small load resistance capacity. High disadvantage

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