环境工程学报2011，Vol.5Issue(11)：2600-2604,5.
光-Fenton氧化破解剩余污泥和改善污泥脱水性能
Sewage sludge disintegration and dewaterability improvement by photo-Fenton oxidation
摘要
Abstract
Photo-Fenton reaction was used to oxidize excess sewage sludge, in which sludge EPS disintegration was characterized by concentrations of soluble chemical oxygen demand （SCOD） , polysaccharide and protein of sludge supernatant, and sludge dewaterability was described by specific resistance to filtration （SRF） and moisture content of sludge cake. Results showed that the effect of EPS disintegration and sludge dewaterability improvement by photo-Fenton reaction was stronger than that by single Fenton reaction or single UV radiation. The optimal conditions for photo-Fenton oxidation of the experimental sludge were as follows, pH = 3, reaction time =2 h, H202 dosage =4 g/L and Fe^2＋ dosage =0.6 rag/L, respectively. Under these conditions, the concentrations of SCOD, polysaecharide and protein of the sludge supernatant increased from 67.46 mg/L, 12.53 mg/L and 8.62 mg/L to 568.12 mg/L, 448.62 mg/L and 292.94 mg/L, respectively; and the SRF and the moisture content of sludge cake reduced from 2.4 × 10^9 S^2/g and 88.52% to 5.26× 10^8s^2/g and 76.36% , respectively. While the sewage sludge was efficiently viously enhanced by photo-Fenton oxidation, which disintegrated, the sludge dewaterability improvement was obbenefits further sewage sludge reduction.关键词
光-Fenton/胞外聚合物/SCOD/多聚糖/蛋白质/污泥过滤比阻/滤饼含水率Key words
photo-Fenton/extracellular polymeric substances （EPS）/SCOD/polysaccharide/protein/specific resistance to filtration （SRF）/moisture content of sludge cake分类
资源环境引用本文复制引用
周煜,张爱菊,张盼月,曾光明,欧阳,陈畅亚,叶捷..光-Fenton氧化破解剩余污泥和改善污泥脱水性能[J].环境工程学报,2011,5(11):2600-2604,5.基金项目
高等学校博士学科点专项科研基金 （）
国家“水体污染控制与治理”科技重大专项 （）
