Nature Environment and Pollution Technology

Zhourong Cao ¹, Shunsheng Yang ¹, Xipeng Zheng ¹, Guohan Zhao ¹

Affiliations
1 School of Civil Engineering, Southwest Jiaotong University, Chengdu, Si Chuan, CN

Abstract

In wastewater treatment plants (WWTP) in China, the lack of carbon source has become a critical element, which restricts the efficiency of biological nitrogen and phosphorus removal (NPR). This paper analyses the application of ultrasonic disintegration of sludge, exploiting the internal carbon source for the biological NPR. Tests on WWTP have been conducted and the indexes of COD_cr, TN, NH₃^- N, TP in the raw water and effluent recorded respectively. The efficiency and mechanism of NPR have been analysed. This research shows that with the application of ultrasonic disintegration of sludge, economic and practically high-quality carbon source can be obtained.

Keywords

Ultrasonic Disintegration, Nitrogen Phosphorus, Internal Carbon Source, Sludge.

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