Bean product waste water treatment device

Abstract

Disclosed is a bean product waste water treatment device. The bean product waste water treatment device is composed of a waste water buffer pool, a first biogas digester, a first water pressure chamber, a second biogas digester, a second water pressure chamber, a settling pond, a waste water aeration tank and a concentration filter tank, wherein the waste water buffer pool is connected with a water inlet pipe and connected with the first biogas digester through a first inclined water inlet pipe; the first biogas digester is communicated with the first water pressure chamber through a first diversion hole; the first water pressure chamber is connected with the second biogas digester through a second inclined water inlet pipe; the second biogas digester is communicated with the second water pressure chamber through a third diversion hole; the second water pressure chamber is communicated with the settling pond through a fourth diversion hole; the settling pond is communicated with the waste water aeration tank through a fifth diversion hole; the waste water aeration tank is communicated with the concentration filter tank through a sixth diversion hole and connected with a discharge pipe; the first biogas digester is connected with a first biogas outlet pipe, and the second biogas digester is connected with a second biogas outlet pipe. The bean product waste water treatment device prolongs the staying time of waste water to ensure sufficient fermentation reaction and further to effectively reduce BOD (biochemical oxygen demand) and other hazardous substance in waste water.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a bean product wastewater treatment device. Background technique [0002] The wastewater of soy products enterprises mainly comes from the soaking, soaking, pressing and washing wastewater of raw soybeans. The wastewater has high organic content and strong biodegradability, and is a high-concentration wastewater that pollutes the environment. Most of the pollutants in wastewater are degradable organic matter, and the biodegradability reaches 0.6-0.7. The average C:N:P of wastewater is 100:4.7:0.7, which is suitable for the growth of microorganisms. The key to the treatment of this type of wastewater is to select the appropriate Rational design of the treatment process and related parameters is crucial. [0003] Soy product wastewater mainly comes from bean washing water, soaking bean water, pulp and residue separation water, filter press water, washing water of var...

AI Technical Summary

Problems solved by technology

According to actual engineering experience, the following problems are likely to occur in the treatment of soybean product wastewater: ①. The production of soybean products is an intermittent production mode, and the drainage time is relatively concentrated, and the water volume and water quality are very uneven; Under oxygen conditions, it is easy to form a scum layer on the surface of wastewater; ③. High-concentration wastewater is easily acidified during anaerobic treatment, which deteriorates the treatment effect of anaerobic units; sludge bulking

Therefore, the water in the anaerobic tank must flow into the aerobic treatment regularly to reduce the load on the anaerobic device. However, the water level in the aerobic tank is higher than that in the anaerobic tank. Generally, wastewater cannot automatically flow from the anaerobic tank to the aerobic tank. Transport by means of submerged pumps, which consumes energy and has a corrosive effect on the pump, which has a negative impact on wastewater treatment

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