Integrated rainwater or architectural intermediate water treatment device utilizing air-lift internal loop biological enhancement bentonite dynamic membrane

Abstract

The invention relates to an integrated rainwater or architectural intermediate water treatment device utilizing an air-lift internal loop biological enhancement bentonite dynamic membrane. The appearance of the overall device takes on a cylinder; the device is structurally divided into four parts, namely a main reaction region, a gas-liquid separation region, a dynamic membrane reaction region and a backflow zone. The device provides power through an air diffusion system at the bottom of the device, and circulating flow of a mixed solution composed of biological enhancement bentonite and activated sludge in each region inside the device is achieved. In the process, dynamic balance of aerobic region, an anoxia region and an anaerobic region is achieved inside the device due to difference of dissolved oxygen concentration; reactions such as oxidation of organic matters, and nitrogen and phosphorus removal are respectively carried out, so that pollutants in water can be removed. In the circulating process of the mixed solution, a part of mixed solution is subjected to solid-liquid separation inside the dynamic membrane reaction region, and the target of effectively controlling membrane pollution is achieved due to a fluid flow state of taking unique push flow as a main factor and complete mixing as an auxiliary factor inside the device. The integrated rainwater or architectural intermediate water treatment device has the advantages of high pollutant removing efficiency, stable system operation, small floor area and the like.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an integrated airlift circulation bio-enhanced bentonite dynamic membrane rainwater or building water treatment device. Background technique [0002] The total amount of water resources in my country is relatively considerable, but the per capita water resources are very small, and the water consumption in residential areas is huge. At the same time, reclaimed water treatment and rainwater recycling in residential areas have become more and more popular in recent years, and their design and construction projects have formed a broad industry. It is estimated that the water consumption in residential areas can be reduced by 10% to 40%, and the drainage volume can be reduced by 15% to 50%. It can not only reduce the pollution of domestic sewage, but also increase the capacity of rainwater regulation and storage in residential areas and reduce the number of reside...

AI Technical Summary

Problems solved by technology

The air-lift internal loop reactor has the characteristics of good gas-liquid exchange, high reaction efficiency and small footprint, but at the same time, due to the strong internal turbulent flow state, if the sedimentation tank and the air-lift internal loop reactor are jointly built If there is a problem that the solid-liquid separation effect is not good

The dynamic membrane reactor has good solid-liquid separation, but there is also the problem that the dynamically formed dynamic membrane is easy to block, so the membrane is easy to foul and the efficiency of solid-liquid separation is reduced.

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