Gravity-driven photocatalytic ultrafiltration water purification device and method

Abstract

The invention relates to a gravity-driven photocatalytic ultrafiltration water purification device and method. The device comprises a high-level raw water tank, a photocatalytic ultrafiltration reactor and a produced water tank. An ultrafiltration membrane fixing device and a composite photocatalytic ultrafiltration membrane fixed on the ultrafiltration membrane fixing device are arranged in the photocatalytic ultrafiltration reactor; the photocatalytic ultrafiltration reactor is provided with a water inlet, a backwash water discharge opening and a sludge outlet on the upper side of the composite photocatalytic ultrafiltration membrane, and is provided with a water outlet and a backwash water inlet on the lower side; a raw water outlet of the high-level raw water tank is connected with thewater inlet through a first pipeline provided with a control valve; a water outlet is connected with a produced water inlet of the produced water tank through a second pipeline provided with a control valve and a flow meter; a backwash water outlet of the produced water tank is connected with the backwash water inlet through a third pipeline provided with a control valve; the backwash water discharge opening is connected with a fourth pipeline provided with a control valve; and a sludge outlet is connected with a fifth pipeline provided with a control valve. According to the device and the method, the ultrafiltration water purification effect is improved, the operation energy consumption of the device can be reduced, and the water purification cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of water treatment, and specifically relates to a gravity-driven photocatalytic ultrafiltration water purification device and method. Background technique [0002] With the continuous deepening of my country's economic and social development and the process of urbanization, the living standards of urban residents are increasing, which makes the status of ecological civilization construction more and more prominent. However, at the same time, the problem of drinking water safety, which is one of the important factors hindering the construction of Beautiful China, is becoming more and more serious. Therefore, the effective removal of organic matter, heavy metals and pathogenic microorganisms in water is the key to ensuring the safety of drinking water quality. However, the existing traditional water treatment technologies represented by coagulation, sedimentation, filtration and disinfection water treatment process...

AI Technical Summary

Problems solved by technology

However, since nanocatalysts are usually in the form of powder, it is not easy to recycle in practical applications, and it is easy to cause serious secondary pollution and poisonous effects on aquatic organisms.

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