中文摘要：

采用γ-射线辐照法对城市剩余活性污泥进行处理，探讨了γ-射线辐照对污泥理化性质的影响．试验结果表明，在吸收剂量为0—15kGy范围内，污泥的pH和ORP没有显著变化，不会对污泥后续处理处置带来不利影响．污泥碱度有所提高，沉降一浓缩性和离心脱水性得到明显改善，TS、VS、TSS和VSS均有所下降，表明γ-射线可以破解污泥细胞组分，有利于污泥减量．

英文摘要：

Gamma-ray irradiation effects on residual sewage sludge were studied from the physicochemical characteristics. Results showed that, at irradiation dose from 0 to 15 kGy, pH and ORP remained constant. Alkalinity was increased, sedimentation-thickening property and dewatering property were clearly improved, and TS, VS, TSS, VSS were decreased which could break sludge cellular components, leading to sludge reduction.