Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process

Kaihu YANG; Chuntan CHEN

doi:10.47297/taposatWSP2633-456909.20200103

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Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process

1卷第3期

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Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process
Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process
1. Haitian Water Group Co., Ltd. National Certified Enterprise Technology Center
2. Sichuan Ecological Environment Monitoring Station
3. School of chemistry and chemical engineering, Sichuan University of Arts and Science
4. National Engineering Research Center for Municipal Wastewater Treatment and Reuse (East Sichuan Sub-Center, Sichuan University ofArts and Science
2020年1卷第3期页码：57-63
DOI：10.47297/taposatWSP2633-456909.20200103
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Kaihu YANG & Chuntan CHEN. (2020). Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process. 科学技术理论与实践（英文版）, 1(3), 57-63.

KAIHU YANG & CHUNTAN CHEN. (2020). Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process. Theory and Practice of Science and Technology, 1(3), 57-63..
Kaihu YANG & Chuntan CHEN. (2020). Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process. 科学技术理论与实践（英文版）, 1(3), 57-63. DOI： 10.47297/taposatWSP2633-456909.20200103.

KAIHU YANG & CHUNTAN CHEN. (2020). Effect of Different Dissolved Oxygen on the Treatment Effect of Municipal Domestic Sewage Treated by CASS Process. Theory and Practice of Science and Technology, 1(3), 57-63.. DOI： 10.47297/taposatWSP2633-456909.20200103.

摘要

Abstract

A sewage treatment plant in Chengdu adopts CASS process to treat municipal sewage. It studies the removal effect of pollutants in water when DO concentrations are 2.0 mg/L

3.0 mg/L and 4.0 mg/L respectively

under the condition of normal temperature (15~20℃) and taking 6.0h as a cycle period (including aeration time is 2.0 h). The results show that the best removal DO concentration of CODcr is 4.0 mg/L

the average effluent value is 31.1 mg/L

and the average removal rate is 88.6%. The best removal DO concentration of NH3-N

TN and SS was 3.0 mg/L

and the average effluent values are 4.0 mg/L

11.5 mg/L and 7.4 mg/L respectively

and the average removal rates are 87.6%

68.4% and 96.0% respectively.

关键词

Keywords

Dissolved oxygenCASS processMunicipal domestic sewageTreatment effect

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