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2 Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

2 2003

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The analysis of wastewater reuse and seawater utilization - a case of Yantian district in ShenZhen

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

Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska

2003

Vol. 291, z. 4

241-247

Based on the analysis of existed measures for exploring new water resource and combined the specialty of Yantian district in ShenZhen, seawater utilization and wastewater reuse are presented as the main measures to solve its water-related problems. After the detail comparison between this two measures, wastewater reclamation and reuse is considered as an optimum way. However, it is convenient and economical for those inshore enterprises to use seawater directly.

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.