ScholarLens Back to search
2013•China Water & WastewaterRequires access

Nitrification Enhancement in Closed Double-SRT Activated Sludge Process

Min Wu

Open publisher page 0 citations

Abstract

A pilot test to evaluate the closed double-SRT activated sludge process in Zhuyuan Second Wastewater Treatment Plant in Shanghai was carried out.The concentrations of COD,NH+4-N,NO-3-N and TN in the effluent from the ordinary aeration tank,A/O tank and secondary settling tank were determined,and the pollutant removal process and mechanism were analyzed.Furthermore,the microbial community structure was studied using FISH and PCR-DGGE.The results showed that the closed double-SRT activated sludge process was similar to the BABE.In the A/O tank,nitrobacteria were cultivated and transferred to the ordinary aeration tank continuously.The ordinary aeration tank could remove NH+4-N in a short SRT,thus the nitrification efficiency of the system was enhanced.

About this research paper

What this paper is about

A pilot test to evaluate the closed double-SRT activated sludge process in Zhuyuan Second Wastewater Treatment Plant in Shanghai was carried out.The concentrations of COD,NH+4-N,NO-3-N and TN in the effluent from the ordinary aeration tank,A/O tank and secondary settling tank were determined,and the pollutant removal process and mechanism were analyzed.Furthermore,the microbial community structure was studied using FISH and PCR-DGGE.The results showed that the closed double-SRT activated sludge process was similar to the BABE.In the A/O tank,nitrobacteria were cultivated and transferred to the ordinary aeration tank continuously.The ordinary aeration tank could remove NH+4-N in a short SRT,thus the nitrification efficiency of the system was enhanced.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

A pilot test to evaluate the closed double-SRT activated sludge process in Zhuyuan Second Wastewater Treatment Plant in Shanghai was carried out.The concentrations of COD,NH+4-N,NO-3-N and TN in the effluent from the ordinary aeration tank,A/O tank and secondary settling tank were determined,and the pollutant removal process and mechanism were analyzed.Furthermore,the microbial community structure was studied using FISH and PCR-DGGE.The results showed that the closed double-SRT activated sludge process was similar to the BABE.In the A/O tank,nitrobacteria were cultivated and transferred to the ordinary aeration tank continuously.The ordinary aeration tank could remove NH+4-N in a short SRT,thus the nitrification efficiency of the system was enhanced.

Key concepts: Aeration, Activated sludge, Nitrification, Effluent, Sewage treatment, Settling, Mixed liquor suspended solids, Environmental engineering

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Nitrification Enhancement in Closed Double-SRT Activated Sludge Process — Research Paper | ScholarLens