Proposed treatment for egg-washing wastewater with preliminary, biological and disinfection stages for stormwater discharge.
Project Background
The client-supplied design basis is egg-washing process wastewater with a client-supplied BOD₅ of approximately 800 mg/L. The proposed treatment train combines screening, equalisation, coagulation, dissolved air flotation, biological treatment, polishing and disinfection. Influent characteristics, discharge timing, peak loads and receiving requirements remain to be confirmed.
Our Solution
A rotary mechanical screen removes coarse egg-shell and wash residues, while equalisation, pH correction and coagulation prepare the wastewater for dissolved air flotation, which captures fats, solids and floatable material. MBBR biological treatment is proposed as the preferred biological stage because the wastewater contains a client-supplied BOD₅ of approximately 800 mg/L and its compact form suits a small industrial installation. A secondary clarifier or filtration stage and UV disinfection provide polishing and pathogen control before discharge. Equalisation and standby capacity should be reviewed after peak-flow data are confirmed. Dewatered sludge and DAF float are classified and collected for appropriate disposal or reuse. Final process sizing and disinfection selection will depend on the complete analysis, hydraulic profile and discharge requirements.
What We Asked First
Please confirm the complete influent analysis, including COD, pH, TSS, FOG, ammonia, total nitrogen, total phosphorus and conductivity. Confirm discharge timing, peak flow, extended discharge periods and applicable stormwater discharge limits or permit conditions.
Proposed Process Train
- 1Rotary mechanical screen
- 2equalisation and flow-diversion tank
- 3pH and coagulation control
- 4dissolved air flotation
- 5MBBR biological treatment
- 6polishing and disinfection
- 7stormwater discharge
For Similar Projects
Prepare a complete wastewater analysis, flow record and permit review, including peak and extended discharge periods. Confirm sludge and float handling arrangements before final equipment selection and process sizing.
Ref. A-008. Client identity is withheld under our client-confidentiality policy. Capacity is shown as a capacity class (design value rounded up to the next 5 at its second significant digit).
