A Study on Brewery Wastewater Treating by Microbes

Brewery wastewater from Sichuan Quanxing Brewery was treated by anaerobic-aerobic technique combined with effective microbes.The COD Cr of influent was 8,456.3-22,442.0 mg/L,BOD 5 was 5,040.0 - 9,557.1 mg/L,pH was 3-4 and which needs no adjustment.The anaerobic reactor can be run up immediately seeded by microbes products.The organic loading was 10.2 g COD/Ld,while the COD removal rate was 91-95%.The BOD removal rate was 91-94% and the pH of effluent was 6.6-7.1.The COD Cr of effluent was below to 2,000 mg/L,BOD 5 was below to 800 mg/L.The anerobic sludge in the reactor was granulated completely.Microbes also seeded in the aerobic system.After 10-12h,the COD Cr of effluent was lower than 230 mg/L,or can even meet the national discharge standards.Microbes technique is the key of this process.