Pretreatment anaerobic biochemical regulation device

Abstract

The invention relates to a pretreatment anaerobic biochemical regulation device which comprises an adjusting tank, a water inlet pipe and a water outlet pipe, wherein a manhole and a liquid level alarm device are arranged on the adjusting tank; the adjusting tank comprises an adjusting tank body I and an adjusting tank body II which are arranged in parallel; a communicating pipe is arranged between the adjusting tank body I and the adjusting tank body II; a gate valve I used for controlling the series running of the two tank bodies is arranged on the communicating pipe; the adjusting tank body I and the adjusting tank body II are respectively provided with two or more submersible mixers; and the tops of the adjusting tank body I and the adjusting tank body II are respectively provided with a explosion venting hole and a methane collecting device. The pretreatment anaerobic biochemical regulation device can be used for completing pretreatment of percolate and leads the water quality in the tank body to be even when adjusting water accumulation, can prolong the cleaning period, and has the functions of preventing explosion, venting explosion and leading overhaul and maintenance to be convenient.

Description

Technical field [0001] The invention relates to a pretreatment anaerobic biochemical regulator, which belongs to the technical field of leachate treatment in garbage incineration plants. Background technique [0002] Garbage incineration has gradually become the mainstream process of municipal solid waste treatment. In order to increase the calorific value of garbage, the garbage often undergoes a week or so of fermentation to reduce the moisture content of the garbage. Therefore, the leachate of the garbage incineration plant is produced, and the leachate of the garbage incineration plant reaches the standard. Discharge is an important guarantee for the normal operation of waste incineration plants and compliance with environmental protection standards. The leachate of waste incineration plant has the following characteristics: 1) With the different seasons, garbage collection period and collection area, the output of leachate varies greatly, and the concentration of pollutants ...

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Problems solved by technology

2) The leachate of waste incineration plants is mostly fresh landfill leachate, which has not been degraded by anaerobic fermentation for a long time. The concentration of pollutants is high, and the content of polymer refractory organic matter is high. The COD value is usually between 40,000 and 60,000 mg / L

[0003] At present, the leachate biochemical treatment system of the incineration plant mainly has the following problems: 1) The influent water quality is uneven and unstable, which has a great impact on the subsequent treatment system and easily leads to poor treatment effect

2) The high concentration of influent pollutants leads to high load on the subsequent treatment system, and the leachate residence time is long, the pool volume is large, and the cost is high

3) The large amount of sludge will easily lead to blockage of the UASB water distribution pipeline, and the cleaning period of the regulating tank is short

4) The biogas produced in the regulating tank diffuses randomly, causing safety hazards such as explosions, and the random diffusion of odor pollutes the surrounding environment

[0004] At present, the adjustment tank only has the function of regulating quality and quantity, so the sludge often accumulates in the adjustment tank, and it needs to be cleaned regularly. At the same time, because the adjustment tank does not have a mixing system and does not consider the anaerobic treatment effect, it causes idle waste of the tank body. It is also not conducive to the normal operation of subsequent processing facilities

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