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Method of using ultra xonic wave to quickly remove algae in water plant raw water

An ultrasonic, raw water technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment and other directions, can solve problems such as pipe network corrosion, achieve stable operation, simple equipment structure and small size Effect

Inactive Publication Date: 2004-12-22
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

A large amount of oxidant is consumed during the disinfection process, which produces toxic by-products such as trihalomethanes (THMs) and causes pipe network corrosion

Method used

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Embodiment Construction

[0011] The ultrasonic rapid algae removal method of the present invention will be further described below.

[0012] After the raw water enters the plant, it is sent to the coagulation reaction tank, and a regular dose of coagulant is added to carry out the coagulation reaction. At the same time, the ultrasonic wave is generated by the ultrasonic power supply, which is directly applied to the raw water in the coagulation reaction tank through the transducer for ultrasonic treatment.

[0013] The ultrasonic power supply used can adopt various existing sources and excitation methods. The ultrasonic power generated is within the power ultrasonic range, and the frequency of the ultrasonic wave is 20-100kHz. 10kW / m 2 Inside. In a typical embodiment, the frequency of the ultrasonic waves is 20-100 kHz, and the intensity is 0.1-10 kW / m 2 , the action water depth is 0.1-5m, and the action time of ultrasonic waves on the raw water in the coagulation reaction tank is 0.5-5 minutes.

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Abstract

A process for removing the algae from the raw water of water works by ultrasonic waves includes adding coagulant to said raw water, coagulating reaction while applying ultrasonic waves via ultrasonic transducer, filtering and disinfecting.

Description

technical field [0001] The invention relates to the water treatment technology of a water plant, in particular to a method for rapidly removing algae in raw water of a water plant by using ultrasonic waves. Background technique [0002] Water resources are the basic material that human beings depend on for survival. With the growth of population and the rapid development of social economy, the demand for water has increased sharply, and the pollution of water resources has become increasingly serious. A survey in 2000 showed that 14 of the 18 major lakes in my country have entered a state of eutrophication, such as Dianchi Lake, Taihu Lake, West Lake, East Lake, South Lake, Xuanwu Lake, Bohai Bay, Laizhou Bay, Jiulong River, Huangpu River, etc. . Eutrophic water bodies are prone to algal blooms, making the water smell foul, reducing the transparency of the water body, increasing turbidity, and causing anaerobic conditions. Some algae can also secrete algae toxins, which can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/04
Inventor 张光明王波吴敏生张锡辉
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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