用高效染料脱色菌和PVA降解菌混合培养液处理印染废水

在厌气－好气－活性碳三级串联工艺系统中，用７株高效染料脱色降解菌在厌气池中接种，在好气池中用聚乙烯醇降解菌富集培养液接种挂膜处理含ＰＶＡ和ＢＯＤ５／ＣＯＤｃｒ＜０．２的印染废水，经日处理１７ｔ废水的中试表明，当进水ＣＯＤｃｒ，ＢＯＤ５，ＰＶＡ，洗涤剂和色度含量分别为６８０ｐｐｍ，１１０ｐｐｍ，１３４ｐｐｍ，２．９４ｐｐｍ和６５倍时，在厌气池，好气池和活性碳池中的水力负荷分别为３．１７，３．０，１４

TREATMENT OF PRINTING AND DYEING WASTEWATER BY MIXED BACTERIAL CULTURE

The treatment of printing and dyeing wastewater contained polyvinyl alcohol (PVA) with BOD₅/COD_Cr<0.2 by mixed bacterial culture was studied. The mixed culture of seven strains of dye-decolor bacteria was inoculated in an anaerobic bioreactor, and consortium degrading PVA enrichment mixed culture in an aerobic bioreactor in biotreated system involving an anaerobic-aerobic and activated carbon filter. The results of the treatment of 17 tons of wastewater per day for ten months illustrated that the total removal of COD_Cr, BOD₅, PVA, detergents and color were 91.5%, 95.3%, 89.7%, 97.6%, and 80% respectively, at the hydraulic loading(t/(m³·d)) of 3.17, 3.0, 14 in anaerobic, aerobic and activated carbon bioreactors. The average amounts (mg/L.) of COD_Cr, BOD₅, PVA, detergents and color (times) were 45.8, 9.22, 10.7, 0.07, and 10.2 respectively in the final effluent. The removal of pollutants in various bioreactors were compared.