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The Toxicity of Two Types of Sewage Sludge from Wastewater Treatment Plant for Plants

Adamcová D., Vaverková M. D., Břoušková E.

Journal of Ecological Engineering

2016

Vol. 17, nr 2

33--37

The aim of the present study was the estimation of the phytotoxicity of soils amended with sewage sludge with relation to Sinapis alba L. The study was realized in the system of a plot experiment. Two kinds of sewage sludge: dewatered and anaerobically stabilized sludge with dry matter content of about 24%, and dewatered sludge “Palikal” with dry matter content of about 92%. The results indicate that the tested samples are toxic. Growth inhibition at the studied samples ranged from 70.45% to 100%.

Study on land application of sewage sludge in Beijing

Jie L., Bi-Yong X., Jie Z.

Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

2003

Vol. 291, z. 4

503-509

The treatment of sludge is an integral part of a wastewater treatment process. With the volume of sewage sludge requiring disposal increasing significantly in Beijing as sewage treatment facilities have been extended, a more and more critical pressure has been exerted on the facilities and the environment. Based on the analysis of sludge's quality, quantity and Beijing's land quality status, the perspective of land application of sewage sludge is presented. It would bring us a notable benefit both in environment and society. It is indicated that we could obtain two hundreds million yuan per year and alleviate about 30 percent of nitrogen load in agriculture non-point source pollution, with applying one million tons sludge manures to the farmland. In conclusion, we state that it is the best choice for Beijing to apply the sewage sludge to the land.