The design of an air ...
Published by Liang Qiao, Chief Process Specialist at ZJ High New Pty Ltd
The design of an air diffusion system should include an air bleeding pipe to remove any dirt inside periodically. The dirt could be inside of the diffusion system during the installation period or through failed blower filter or condensate.
Once the diffuser blocked, the back pressure could increase and be ruptured the diffuser’s membrane. Once the diffuser raptured, the air flow pattern changed during the aeration and result in some anaerobic area part of the SBR. Due to the aeration system designed too conservative or unevenly aerated, the DO might be still achieved the setpoint in some spots depends the DO probe’s position installed.
Replace the whole diffusers in the SBR1 and install an air bleeding pipe to allow the dirt get out of the aeration system.