Energy-saving circulating device for coking sewage treatment

Abstract

The invention discloses an energy-saving circulating device for coking sewage treatment, and the device comprises a bracket, a filter cartridge, a driving motor, a transmission rod, a stirring rod, a water inlet pipe, a chemical agent injection pipe, a filter plate, a fine filter cartridge, an activated carbon adsorption plate, an MBR treatment tank, a membrane bioreactor, a water outlet pipe, a water pump, a circulating water purification tank, a chlorine dioxide generator, a conveying device, a water conveying pipe, an oil seal and a connecting plate. The invention has the beneficial effects that the device solves the problems that an existing MBR wastewater treatment device is not ideal in filtering effect on soluble granular solid substances in coking wastewater, the content of the solid granular substances is too high, an ultrafiltration membrane in an MBR is blocked, the filtering effect is influenced, water purified by the existing device is not thoroughly treated and carries some bacteria more or less, and therefore the purification effect is affected; the device has the advantages that the water purifier is good in filtering effect and thorough in water purification, and water regeneration and energy conservation can be realized.

Description

technical field [0001] The invention relates to the technical field of metallurgical coking, in particular to an energy-saving circulation device for coking sewage treatment. Background technique [0002] Coking sewage contains a large number of harmful substances that endanger human body and pollute the environment. The treatment of coking sewage is the last process of coke oven gas purification. At present, there are many ways to treat coking sewage. Among them, the MBR treatment process is based on the original A / O internal circulation biological denitrification process. A membrane pool is added in the aerobic pool, and the ultrafiltration membrane is used for mud-water separation. Settling tank, coagulation treatment. The use of MBR technology can increase the concentration of biochemical sludge, increase the volume load of biochemical reaction tanks, and save land occupation. The ultrafiltration water can reach the water quality standard of production water, and can be...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of the prior art, the technical problem solved by the present invention is to provide an energy-saving circulation device for coking sewage treatment, which solves the unsatisfactory filtering effect of the soluble particulate solid matter in the coking sewage of the existing MBR wastewater treatment device, causing solid Excessive particulate matter content leads to clogging of the ultrafiltration membrane in the MBR, which affects the filtration effect, and the water quality treatment of the existing device after purification is not thorough, and more or less carries some bacteria, which affects its water purification efficiency. The filtering effect is good, the water is thoroughly purified, and the advantages of water regeneration and energy saving can be realized

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