Online automatic cleaning system and method for ultrafiltration membrane equipment

Abstract

The invention provides an online automatic cleaning system and method for ultrafiltration membrane equipment. According to the automatic cleaning method, an accumulated working time and a transmembrane pressure difference serve as judgment starting conditions, so that automatic cleaning can be carried out as far as possible under the condition that ultrafiltration membrane equipment needs to be cleaned; and cleaning operation is conducted through automatic cleaning agent preparation, circulating cleaning, soaking, sewage discharge and water replenishing flushing, and after cleaning is completed, whether necessary steps are repeated or not is judged according to the pH value of the remaining cleaning agent as the judgment condition, so that the cleaning method is simple and reasonable, and manual work can be completely replaced. The cleaning system comprises a control module and necessary equipment such as a valve, a metering pump, a pH meter and the like, can automatically perform information feedback and action execution in the whole process, is high in intelligent degree, and has good application prospects.

Description

technical field [0001] The invention relates to the technical field of ultrafiltration membrane equipment, in particular to an online automatic cleaning system and method for ultrafiltration membrane equipment. Background technique [0002] During the operation of the ultrafiltration membrane equipment, the membrane system is driven by a certain pressure to perform filtration work. With the continuous filtration of the ultrafiltration membrane equipment, the membrane modules will gradually become fouled and clogged, which will lead to a gradual decline in the water production. Usually, in order to To ensure the normal operation of the membrane module, the ultrafiltration membrane equipment will be cleaned after the shutdown. Generally, chemical agents are used for cleaning and then combined with positive washing and backwashing operations to discharge pollutants, and the overall process of cleaning operations is manual. Operation. On the one hand, it is necessary to manually...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the ultrafiltration membrane equipment, the membrane system is driven by a certain pressure to perform filtration work. With the continuous filtration of the ultrafiltration membrane equipment, the membrane modules will gradually become fouled and clogged, which will lead to a gradual decline in the water production. Usually, in order to To ensure the normal operation of the membrane module, the ultrafiltration membrane equipment will be cleaned after the shutdown. Generally, chemical agents are used for cleaning and then combined with positive washing and backwashing operations to discharge pollutants, and the overall process of cleaning operations is manual. Operation. On the one hand, it is necessary to manually disassemble and clean the ultrafiltration membrane equipment. On the other hand, the process of manually configuring detergents is relatively risky, and manual cleaning is difficult to perform good quality control. The cleaning effect of ultrafiltration membrane equipment is poor and the efficiency is low

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