Method for increasing biochemical treatment ability of printing and dyeing wastewater by utilizing enzyme activity soybean meal

Abstract

The invention discloses a biochemical treatment method, particularly relates to a method for increasing a biochemical treatment ability of printing and dyeing wastewater by utilizing enzyme activity soybean meal, and more particularly relates to the application of the enzyme activity soybean meal in a biochemical aerobic stage. According to the invention, the printing and dyeing wastewater which is subjected to a normal secondary treatment is processed in a biochemical system; a biochemical treatment system comprises two reserved openings which are connected with an enzyme medicament tank, a part of water sample is intercepted for pre-dissolving the enzyme activity soybean meal, and sewage sample mixed with the enzyme activity soybean meal returns back to the biochemical system; the pre-dissolving of the enzyme activity soybean meal is carried out by adopting interval ultrasound microwaves, and the processed water sample is fully and uniformly mixed in the aerobic tank for aerating and enters into the next treatment procedure through a certain residence time. The invention has the advantages of being simple in the technology operation, increasing the biochemical efficiency withoutchanging the existing biochemical system to a large extent, reducing the cost for extracting and applying the enzyme, and being more convenient for the filling of the medicament. The method disclosedby the invention has a great application prospect.

Description

technical field [0001] The invention relates to a biochemical treatment method, in particular to a method for improving the biochemical treatment capacity of printing and dyeing wastewater by using enzyme-activated soybean powder, especially the application of enzyme-activated soybean powder in the biochemical aerobic stage. technical background [0002] Printing and dyeing wastewater has heavy pollution, strong smell, and serious damage to the environment. At present, more than 80% of enterprises use biological methods to treat them. A large amount of organic matter that is difficult to biodegrade enters the printing and dyeing wastewater, which significantly reduces the biodegradability of the wastewater and increases the difficulty of treatment. In the past, the activated sludge method used for the separate treatment of printing and dyeing wastewater, its COD treatment efficiency has dropped from 70% to 50%, or even lower, resulting in the discharge of wastewater that can...

AI Technical Summary

Problems solved by technology

However, the enzyme immobilization operation itself has a certain material selectivity. Finding a new immobilization carrier that can improve enzyme activity is also a very difficult and complicated task, which also increases the cost of enzyme treatment virtually.