A sewage treatment plant is a living biological system. It performs well when the bacteria that treat the sewage are kept in balance, and it fails quickly when routine care is skipped. Most performance problems we see on takeover come from missed daily checks rather than equipment failure.
Daily tasks should cover blower operation, dissolved oxygen in the aeration tank, a settleability test, removal of floating matter, and a visual check of treated water clarity. Every reading belongs in the log book, because trends reveal problems days before they become visible.
Weekly and monthly tasks include sludge withdrawal, cleaning of screens and diffusers, checks on pumps and dosing systems, and laboratory testing of treated water against the parameters in your pollution control consent. Test results should be reviewed by a technical lead, not only filed.
Finally, plan for reuse. Treated water that meets the norms can serve flushing, landscape irrigation and cooling tower make-up. A well run plant reduces fresh water demand and supports your sustainability reporting.
