Method for conditioning sludge

Abstract

The invention discloses a method for conditioning sludge, belonging to the field of sludge treatment. The method comprises the following steps: adopting a reaction device with ultrasonic equipment and microwave equipment; arranging the to-be-conditioned sludge into a reactor of the reaction device, extending an ultrasonic probe of the ultrasonic equipment into the sludge, and ensuring that the sludge is positioned in an area which is radiated by microwaves emitted by the microwave equipment; enabling the ultrasonic equipment to emit ultrasonic waves according to the set ultrasonic power and time, enabling the microwave equipment to emit the microwaves according to the set microwave power and time, and conditioning the sludge under dual functions of the ultrasonic waves and microwaves to improve the dehydration characteristics. The method disclosed by the invention is simple and easy to achieve; the micro-structure of the sludge can be significantly changed by virtue of combined conditioning; the dehydration property of the sludge can be effectively improved after conditioning; the method does not need to add chemical conditioners, and can avoid causing secondary pollution to the environment.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a method for conditioning sludge. Background technique [0002] As of the end of March 2014, a total of 3,622 sewage treatment plants have been built in cities and towns in my country, with a sewage treatment capacity of about 153 million cubic meters per day. Sludge is the final product of sewage treatment. It is a heterogeneous body, mainly composed of organic debris, bacterial cells, inorganic particles, colloids, etc., and its composition is very complex. At present, the sewage treatment rate is increasing year by year, and the sludge production is increasing rapidly. The investment and operation costs of sludge treatment are huge, accounting for nearly 25% to 65% of the investment and operation costs of the entire sewage plant. Sludge treatment has become an important part of urban sewage treatment. heavy burden on the factory. Sludge dehydration is the most important step ...

AI Technical Summary

Problems solved by technology

The current sludge conditioning technology is mainly based on the chemical method, because the chemical method is simple to operate and low in investment cost, but this method needs to add a conditioner to the sludge, which may increase the cost of corrosion equipment and easily cause secondary pollution to the environment. secondary pollution

Images