Bakeries generates large amount of waste water in process which are highly acidic in nature and cannot be discharged in municipality drainage or open drains . Every country has their discharge parameters for pH,COD , BOD ,TSS,TDS,Fat and Oil , Heavy Metal .
Bakery waste water consists of Flour , Fat and Sugar from process these waste are biodegradable hence biological treatment can be effective in reducing BOD of the waste water
ETP ( Effluent treatment Plants) for bakeries are biological rather than chemical which are used for heavy chemical industries .
Three type of biological treatment are used in bakery waste water treatment
- Aerobic ( aeration )
- Anaerobic( Without aeration in enclosed area )
- Anaerobic -Aerobic combined
The best results are from combined treatment through aerobic and anaerobic treatment .
The Disadvantage of combined treatment .
Foul Smell due methane gas generation in anaerobic reactor. ETP plant has to be located at distant place away from production facility.
Large area for reactors
Bakery waste handling