Novel high-efficient energy-saving precipitating and filtering method utilizing light particle medium filter materials

Abstract

The invention relates to a novel high-efficient energy-saving precipitating and filtering method utilizing light particle medium filter materials. By the aid of the method, two processes including a precipitating process and a filtering process for sewage purification are completed in a system, occupied area is saved, purposes of not only directly treating sewage with higher turbidity but obtaining outflow water with better quality are realized, so that problems that at present, the quality of outflow water of a precipitating system is poorer and a filtering system cannot directly treat sewage with higher turbidity are resolved, and the novel high-efficient energy-saving precipitating and filtering method has the advantages that efficiency is high and occupied land resources are saved. In addition, as the light particle medium filter materials are utilized, floccules heavier than water in the filter materials are flushed out from the filter materials from top to bottom, the filtering materials enter a mixing precipitating region below a filter material layer, and the floccules heavier than water automatically sink to enter a sludge accumulation region. By the aid of a back flush mode, on the one hand, the quantity of needed clear water is much lower, water pressure is also much lower, and the purpose of saving energy is achieved, on the other hand, water does not need to be taken away from the system, and purposes of not only saving energy but saving water resources are achieved.

Description

[0001] technical field [0002] The invention relates to a novel high-efficiency and energy-saving sedimentation filtration method using light particle medium filter material. [0003] Background technique [0004] The existing sewage purification methods generally include two processes of sewage sedimentation and filtration, and two systems need to be installed to complete the sedimentation and filtration processes respectively, and installing two systems at the same time will result in a large footprint. In addition, the current water quality of the sedimentation system is poor, that is, the turbidity is high; and the filtration system cannot directly treat sewage with high turbidity, and it is impossible to directly treat sewage with high turbidity and obtain better water quality. The purpose of effluent, resulting in inefficiency. [0005] At present, when the filter system flushes the flocs in the filter material, the flocs heavier than water in the filter material ar...

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Problems solved by technology

[0004] The existing sewage purification methods generally include two processes of sewage sedimentation and filtration. Two systems need to be installed to complete the sedimentation and filtration processes respectively. Installing two systems at the same time will result in a large footprint.

In addition, the current water quality of the sedimentation system is poor, that is, the turbidity is high; and the filtration system cannot directly treat sewage with high turbidity, and it is impossible to directly treat sewage with high turbidity and obtain better water quality. purpose of effluent, resulting in inefficiency

[0005] At present, when the filter system flushes the flocs in the filter material, the flocs heavier than water in the filter material are usually washed out from the filter material from the bottom up, and taken out of the filter system with the backwashing water; the required The amount of clean water is large and the water pressure is high, which fails to achieve the purpose of saving energy and water

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