A biological filter for wastewater treatment

Abstract

The invention provides a biological filter tank for wastewater treatment. The biological filter tank comprises a tank body that comprises a first tank body and a second tank body; wherein the bottomsof the first tank body and the second tank body are communicated, a transverse filler frame for fixing filler is arranged in the first tank body, a transverse aeration pipe is arranged on the lower portion of the transverse filler frame; the transverse filler frame is arranged on a communication part, and long-handle filter caps are uniformly arranged on the lower surface of the filler; the secondtank body comprises three groups of vertical packing frames, packing is fixed through the vertical packing frames, the thickness of the middle vertical packing frame in the three groups of vertical packing frames is 1.5-2 times that of the vertical packing frames on the two sides, and the water passing resistance of the packing in the middle vertical packing frame is smaller than that of the packing in the vertical packing frames on the two sides; turbulent flow stirring blades and vertical aeration pipes are arranged on the two sides of the middle vertical packing frame. Thebiological filtertank is simple in structure, low in equipment energy consumption and good in purification effect, and can be used at the rear end of a sewage treatment process for fine treatment of purified water.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biofilter used for waste water treatment in the process of organic sewage treatment. Background technique [0002] With the increasing construction of cities, the treatment of urban sewage has become an urgent problem to be solved, which makes the sewage treatment system widely used. The sewage treatment systems used to treat different sewage are also different, and corresponding sewage treatment systems need to be designed according to the characteristics of various sewage. For the treatment of urban sewage, the conventional treatment method is to first remove the fiber impurities and suspended particles in the wastewater through the grid, and then pump them to the air flotation tank through the pump structure, and add coagulant to the air flotation tank to remove the fine suspended particles in the water. After removing substances and oily substances, the treated wa...

AI Technical Summary

Problems solved by technology

However, the structure of the biological aerated filter in the prior art is too simple, and the water flow in the pool is relatively static, which cannot make the dirt in the pool evenly contact and react. Coke and some other interstitial materials are used as fillers, which makes the effect of the stirring and turbulence structure added in the biological filter not good. There are also some auxiliary equipment on the market to solve the problems in the above-mentioned biological aerated filter, but adding Auxiliary equipment will make the structure of the system more complex, and the initial investment and later operation and maintenance costs will be higher, which will increase the operating pressure of the operating department

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