E3S Web Conf.
Volume 194, 20202020 5th International Conference on Advances in Energy and Environment Research (ICAEER 2020)
|Number of page(s)||4|
|Section||Environmental Protection and Pollution Control|
|Published online||15 October 2020|
Feasibility Study of Shell Powder as Sludge Conditioning Agent
1 Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian Minzu University, Dalian 116600, China
2 College of Environment and Resources, Dalian Minzu University, Dalian 116600, China
* Corresponding author: firstname.lastname@example.org
Sludge becomes a “world problem” with the increase of wastewater treatment amounts across the world. Sludge treatment is mainly for reduction, stabilization, harmlessness and recycling. By adding sludge conditioning agents, it can effectively reduce the moisture content and the specific resistance of sludge, and provide effective guarantees for subsequent sludge dewatering. The shells were used to reduce the moisture content and specific resistance of sludge herein. Through the analysis of experimental data, the results showed that the best dosage of shell powder solution was 6% of the dry weight of the sludge, and the best dosage of shell powder was 24% of the dry weight of the sludge. Under the optimal dosage, changing the pH value could also cause changes in the water content and the specific resistance of the sludge. The optimal pH values of the shell powder solution and shell powder for sludge conditioning were 8-9 and 7, respectively.
© The Authors, published by EDP Sciences, 2020
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