A biological bed system for treating organic sewage

Abstract

The invention discloses a biological bed system for treating organic sewage, and belongs to the field of sewage treatment. The system comprises a biological bed with the thickness of 30-300 cm, geomembrane impervious layers are arranged on the bottom and the side surfaces of the biological bed, multiple pervious water distribution pipes distributed horizontally are arranged in the middle of the biological bed, a sewage inlet is arranged at one end of each pervious water distribution pipe, the sewage inlet ends are connected with a filtering tank, and a non-woven filter membrane is arranged on the tops of the pervious water distribution pipes; two sides of the non-woven filter membrane tilt downward in the length direction of the pervious water distribution pipes; per cubic meter of sewage is distributed in a biological bed with a superficial area of 20-200 square meters. According to the sewage treatment system, the purpose of organic sewage treatment is achieved without electricity, mechanical equipment or chemical agents, water can evaporate in the air or be absorbed by plants, and during a treatment process, pollutants can be completely decomposed by microbial fungi and absorbed by the plants.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biological bed system for treating organic sewage. Background technique [0002] At present, domestic and foreign sewage treatment methods mainly include biological treatment, physical and chemical treatment and land treatment, and biological treatment includes activated sludge method, anaerobic biochemical method and biofilm method, etc. The requirements are high, the purification effect in cold areas is poor, and the treatment effect for high-concentration organic sewage such as landfill leachate, aquaculture sewage, slaughter wastewater, domestic sewage, and food industry wastewater is not outstanding, the odor is serious, and the cost is expensive. Difficult to discharge; physicochemical treatment requires large space and energy consumption, and a certain amount of chemical raw materials can only be used as a pretreatment process for wastewater treatment, and the s...

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Problems solved by technology

[0002] At present, domestic and foreign sewage treatment methods mainly include biological treatment, physical and chemical treatment and land treatment, and biological treatment includes activated sludge method, anaerobic biochemical method and biofilm method, etc. The requirements are high, the purification effect in cold areas is poor, and the treatment effect for high-concentration organic sewage such as landfill leachate, aquaculture sewage, slaughter wastewater, domestic sewage, and food industry wastewater is not outstanding, the odor is serious, and the cost is expensive. Difficult to discharge; physicochemical treatment requires large space and energy consumption, and a certain amount of chemical raw materials can only be used as a pretreatment process for wastewater treatment, and the subsequent treatment process is complicated; solvents need to be recycled and reused , high processing cost

[0003] To sum up, the existing organic sewage treatment technology involves practical problems such as energy consumption, sewage volume, process management, investment, site, complex operation, complete removal of organic pollutants in water, and difficulty in meeting discharge standards. , needs to add a large amount of chemical preparations to meet the standard and other problems, can not be used well and play a good effect, so invent a low investment cost, low operating cost, long-term operation without mud discharge and cleaning, without mechanical stirring and mechanical blockage No need to add chemical agents, etc., an organic sewage treatment system that will not cause secondary pollution to the surrounding environment during the sewage treatment process is very necessary

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