Research on Improving the Dewatering Performance of Municipal Sludge by Coupling Fenton Technology with Bioleaching
Municipal sludge contains a lot of water,has a large volume,and is easy to cause harm to the environ-ment,bringing severe challenges to the subsequent treatment and disposal work.Sludge dewatering can significantly reduce the volume of sludge,thus reducing the cost of sludge treatment and disposal.Efficient sludge conditioning technology can improve the dewatering performance and realize the sludge reduction.Among numerous sludge conditioning technologies,Bioleaching technology and Fenton technology have achieved remarkable results in im-proving sludge dewatering performance.To this end,11 groups of comparative experiments are designed,and the experiment content is:After the 48 hours of Bioleaching,the sludge was subjected to Fenton treatment with differ-ent Fe2+and H2O2 addition ratios for 1 hour,aiming to explore the feasibility of the combined application of these two technologies.The experiment found that if the improvement degree of sludge dewatering performance and the experimental cost were considered at the same time,Group G(Fe2+∶H2O2=25.00∶55.00)had a significant effect compared with other groups.Compared with the original sludge,the SRF value decreased by 95.6%and the CST value decreased by 68.08%.This result provides a new technical choice for the effective treatment of municipal sludge.
Municipal sludgeDewatering performanceBileachingFenton technology
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