Study Of Microbial Degradation Of Polyvinyl Alcohol (PVA) In Wastewater Treatment Plants

摘要

For environmental and other reasons, it's important to overview the manufacture and chemical characterization of PVA as well as the PVA load of textile effluents discharged and the current level of knowledge on the microbial degradation of PVA. The evaluation conducted in Germany is based on experimental data collected between 1990 and 1992 which indicates that PVA is microbially degradable in conventional mechanical-biological waste-water treatment plants if fixed system requirements such as adaptation, constant influx, food to microorganisms ratios (F/M) under 0.15 kg BOD 5/kg MLSS x d, and temperatures above 15℃ are present.