Occurrence and fate of phthalate esters in wastewater treatment plants in Qingdao, China

The widely use of phthalate esters (PAEs) in both industry and commercial products leads to their ubiquitous existence in the environment. In this study, sewage samples were collected from Several wastewater treatment plants (WWTPs) in Shanghai, China to investigate the levels and profiles of PAEs. Of the 16 PAEs, DMP, DEP, DnBP, DiBP, DCHP, DEHP, DnNP and DnOP were present in all sludge samples. DEHP and DnBP are found to be the dominant PAEs in sludge, and the average concentration of DEHP in this study is at a medium magnitude in the world. Following sludge application in farmland, the annual mass loading of PAEs is up to 32,000 kg. However, further studies are needed to explore the metabolites of PAEs in sludge since they are easily biodegraded in WWTP process.

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Detecting phthalate esters in sludge particulates from wastewater treatment plants

Journal of Environmental Science and Health Part A ◽

10.1080/10934529.2020.1780850 ◽

2020 ◽

Vol 55 (10) ◽

pp. 1233-1240

Author(s):

Cheng-Di Dong ◽

Ming-Huang Wang ◽

Chih-Feng Chen ◽

Yu-Jen Shih ◽

Ken-Lin Chang ◽

...

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plants ◽

Phthalate Esters

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Occurrence and fate of phthalate esters in full-scale domestic wastewater treatment plants and their impact on receiving waters along the Songhua River in China

Chemosphere ◽

10.1016/j.chemosphere.2013.08.009 ◽

2014 ◽

Vol 95 ◽

pp. 24-32 ◽

Cited By ~ 141

Author(s):

Dawen Gao ◽

Zhe Li ◽

Zhidan Wen ◽

Nanqi Ren

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plants ◽

Phthalate Esters ◽

Domestic Wastewater ◽

Full Scale ◽

Songhua River ◽

Domestic Wastewater Treatment ◽

Receiving Waters ◽

The Songhua River

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Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

Pollack Periodica ◽

10.1556/606.2020.15.2.13 ◽

2020 ◽

Vol 15 (2) ◽

pp. 142-151

Author(s):

Peter Lukac ◽

Lubos Jurik

Keyword(s):

Wastewater Treatment ◽

Wastewater Treatment Plant ◽

Wastewater Treatment Plants ◽

Sewage Treatment ◽

Sewage Treatment Plant ◽

Treatment Plant ◽

Phosphorus Recovery ◽

Anaerobic Sludge ◽

Biological Phosphorus Removal ◽

The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

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