Insights into multisource sludge distributed in the Yangtze River basin, China: Characteristics,correlation, treatment and disposal  

作　　者：Yiqun Guo Hui Gong Wenjing Shi Ning Fang Yaqin Tan Weiqi Zhou Jialiang Huang Lingling Dai Xiaohu Dai Yali Guo 

机构地区：[1]State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China [2]Shanghai Investigation,Design&Research Institute Co.,Ltd,Shanghai 200050,China [3]YANGTZE Eco-Environment Engineering Research Center(Shanghai),China Three Gorges Corporation,Shanghai 200050,China [4]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China

出　　处：《Journal of Environmental Sciences》2023年第4期321-332,共12页环境科学学报（英文版）

基　　金：supported by the Scientific Research Project of China Three Gorges Corporation, China (No. 202003081);the National Key Research and Development Program of China (No. 2020YFC1908702);the National Natural Science Foundation of China (NSFC) (No. 52131002)。

摘　　要：Sludge is the by-product of wastewater treatment process. Multisource sludge can be defined as sludge from different sources. Based on the sludge properties of five typical cities in the Yangtze River basin, including Jiujiang, Wuhu, Lu’an, Zhenjiang and Wuhan, this study investigated and summarized the characteristic variations and distribution differences of multiple indicators and substances from municipal sludge, dredged sludge, and river and lake sediments. The results demonstrated pH of multisource sludge was relatively stable in the neutral range. Organic matter and water content among municipal sludge were high and varied considerably between different wastewater treatment plants. Dredged sludge had an obviously higher sand content and wider particle distribution, which could be considered for graded utilization depending on its size. The nutrients composition of river and lake sediments was usually stable and special, with lower nitrogen and phosphorus content but higher potassium levels. The sources of heavy metals and persistent organic pollutants in multisource sludge were correlated, generally much higher among municipal sludge than dredged sludge and river and lake sediments, which were the most important limitation for final land utilization. Despite various properties of multisource sludge, the final fate and destination have some overall similarities, which need to be supplemented and improved by standards and laws. The study provided a preliminary analysis of suitable technical routes for municipal sludge, dredged sludge, river and lake sediments based on their different characteristics respectively, which was of great significance for multisource sludge co-treatment and disposal in the future of China.

关 键 词：Multisource sludge Basic characteristics Potential correlation Treatment and disposal Heavy metals Persistent organic pollutants 

分 类 号：X703[环境科学与工程—环境工程]