Preparation method and application of sludge-based activated charcoal

Abstract

The invention discloses a preparation method of sludge-based activated charcoal, and further discloses application and an application method of the sludge-based activated charcoal. The invention particularly relates to a method which can be used for realizing zero emission and resource recovery of sludge produced by urban sewage plants, preparing a low-cost and efficient sludge-based activated charcoal material and recycling sludge to be reused by membrane bioreactors for strengthening urban sewage treatment performance and membrane fouling control. According to the method, organic substances contained in sludge produced by the membrane bioreactor technology from urban sewage plants are fully utilized, and a certain chemical means is adopted for preparing an adsorbent material with a porous structure from excess sludge; at the same time, the adsorbent material prepared from the sludge can be added to membrane bioreactors for strengthening the decontamination performance and retarding membrane fouling, so that the both the purpose of waste resource utilization and the purpose of dealing with waste by waste are achieved, a far-reaching influence on urban sewage treatment and sludge disposal technology and a quite high utility value are achieved.

Description

technical field [0001] The invention relates to a method for preparing sludge-based activated carbon and its application. Background technique [0002] Membrane bioreactor technology is a new type of high-efficiency biological treatment device that integrates membrane filtration and biological treatment. It has the advantages of simple process flow, small footprint, low infrastructure investment, low operating costs, convenient operation and management, and excellent water quality. , separation of sludge retention time and hydraulic retention time, and easy automation control. Although the membrane bioreactor process has the above advantages, there are also some shortcomings. The main reason is that membrane fouling is more likely to occur in the reactor, which leads to a decrease in the sewage treatment capacity of the system, which in turn leads to frequent membrane cleaning cycles and higher investment and operation management costs. It hinders the promotion and applicat...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of secondary pollution of the environment caused by the high amount of residual sludge produced in the existing sewage treatment plant, and also solve the problem of limited decontamination efficiency and serious membrane pollution in the sewage treatment process of the membrane bioreactor. For the high problem of running cost, the specific scheme of the present invention is as follows for realizing the above object: