Bean product production wastewater treating agent and wastewater treating method

Abstract

The invention belongs to the field of food enterprise wastewater treatment, particularly relates to a bean product production wastewater treating agent and further relates to a bean product production wastewater treating method. The bean product production wastewater treating agent is prepared from a physical water purifying agent, a compound microbial agent and an enzymic preparation, wherein the physical water purifying agent is prepared from, by weight, 1-5 parts of activated carbon, 1-5 parts of organic modified zeolite and 1-5 parts of polyacrylamide, the compound microbial agent is prepared from, by weight, 0.02-0.1 part of flavobacterium powder, 0.05-0.2 part of rhodococcus powder, 0.05-0.2 part of bacillus licheniformis powder and 0.04-0.2 part of thiobacillus powder, and the enzymic preparation is prepared from, by weight, 0.05-0.1 part of cellulose, 0.04-0.09 part of pectinase and 0.01-0.06 part of bromelain. By means of the wastewater treating agent and the wastewater treating method, organic matter which is complex, difficult to degrade and large in particle is hydrolyzed into simple organic matter easy to degrade, the SS content in wastewater is greatly reduced, the BOD and COD removal rate of the treated wastewater is high, and the wastewater reaches the regulated emission standard.

Description

technical field [0001] The invention belongs to the field of waste water treatment of food enterprises, and in particular relates to a treatment agent for soybean product production wastewater, and also relates to the above-mentioned treatment method for soybean product production wastewater. 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 a high content of organic matter, and its highest COD value is as high as 15000mg / L. It has strong biodegradability and is a high concentration of polluting environment. waste water. This type of wastewater contains a large amount of plant protein, oxalic acid, collagen and other substances that are easily degraded by microorganisms. 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 o...

AI Technical Summary

Problems solved by technology

[0003] 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 belongs to the intermittent production mode, the drainage time is relatively concentrated, and the water quality and quantity are very uneven; It is easy to form a scum layer on the surface of the wastewater; 3. High-concentration wastewater is easily acidified in the anaerobic treatment project, which deteriorates the treatment effect of the anaerobic unit; 4. In the aerobic stage, the activated sludge method is used to treat it, which is easy to produce sludge bulking