A kind of diatomite and activated carbon mixed covering filtration method

Abstract

The invention discloses a diatomite and active carbon mixed covered filtration system and a filtration method thereof. The filtration system is characterized in that a water inlet and a water outlet are disposed at the same side of a filter pool body. A U-shaped water inlet groove is arranged at the position of the water inlet, wherein the upper end of the U-shaped water inlet groove is communicated with the water inlet, and the lower end of the U-shaped water inlet groove is open. A group of flat plate filter elements are vertically disposed inside the filter pool body, wherein the outlet pipe orifice for filtrate of the flat plate filter elements is connected with the water outlet through a holding tank for water after all the filer process. A drainage opening is disposed at the bottom of the filter pool body. The water inlet of the filter pool is separately in connection with a raw water inlet through a raw water elevator pump, in connection with a film-paving case through an on-line film-paving elevator pump, and in connection with a film-paving recirculation case through a film-pre-paving elevator pump. The water outlet of the filter pool is in connection with the water inlet of a clean water tank, and the water outlet of the clean water tank is in connection with end users. The filter system and method are advantageous by simple structure and low head loss, which improves operation cycle, reduces filter cost and raises filter effect.

Description

Technical field:

[0001] The invention relates to the technical field of urban tap water treatment, in particular to a diatomite and activated carbon mixed covering filtration method. Background technique:

[0002] Water source pollution is a common problem facing the world today, especially the problem of eutrophication pollution. When the water source is polluted, due to the limitation of the conventional water purification process, the safety of the treated drinking water is difficult to guarantee, especially after the cyanobacteria outbreak in Taihu Lake in 2007, the most common complaint about the water quality is the fishy smell in the water . At the same time, for lake water with low turbidity, conventional clarification and filtration technologies are difficult to meet the requirements of drinking water treatment.

[0003] Diatomite powder covering filtration technology is a new technology that uses diatomite powder to filter raw water between membrane technology an...

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