MBR plate-type membrane cleaning agent and cleaning method

Abstract

The invention discloses an MBR plate-type membrane cleaning agent, which comprises an alkaline cleaning agent and / or an acidic cleaning agent, and can efficiently remove various pollutants remained onthe surface and in the membrane pores of an ultrafiltration membrane. The invention also provides an MBR plate-type membrane cleaning method, wherein the cleaning agent is beaten into a plate-type membrane in a cross-flow circulation manner, standing aerating scrubbing is performed, and the residual cleaning agent in the membrane is recovered, so that the defects that the chemical cleaning of theexisting plate-type membrane is non-uniform and the agent cannot be recovered can be overcome, and the chemical cleaning strength and the membrane performance recovery rate after chemical cleaning are effectively improved so as to prolong the chemical cleaning period and the service life of the MBR plate-type membrane system.

Description

technical field

[0001] The invention belongs to the technical field of organic ultrafiltration membrane sewage treatment, and in particular relates to an MBR plate membrane cleaning agent and an online circulation cleaning method. Background technique

[0002] With the rapid development of social economy and the rapid increase of population, China's water resource problems are also becoming more and more serious. Improving the quality of the water environment is our top priority. Membrane bioreactor (MBR) technology is generally used in my country's sewage treatment. Because of its high effluent quality, stable structure and easy operation, it is widely used in the field of municipal water and industrial wastewater reuse, and is the most promising market. One of the wastewater treatment technologies, and the MBR plate membrane is one of the most important methods of the MBR technology, and the plate ultrafiltration membrane is the key to its use.

[0003] However, during th...

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