Status and countermeasures of sewage sludge treatment and disposal in Beijing

• Autorzy: Xiaoying Z. , Yuwen Z. , Hongying R.
• Konferencja: Proceedings of the German-Chinese-Polish Symposium Environmental Engineering
• Języki publikacji: EN

Abstrakty

EN

The problem of sewage sludge treatment and disposal is becoming more and more serious with the rapid development of sewage treatment in Beijing. In this paper, the status and problems of Beijing sewage sludge treatment and disposal are analyzed, and the components of sludge are also analyzed. At present, a sewage sludge treatment and disposal center is in operation in Beijing, treating and disposing the sludge from the 5 existing wastewater treatment plants in Beijing. It is an achievement, but also has certain problems which are needed to be solved for the safety use of sludge. The analysis of sludge components shows that there are rich plant nutrients and organics in the sludge, and also a large number of pathogenic microorganisms which needed to be killed. The concentrations of certain kinds of heavy metals exceed the Chinese standards of sludge for agricultural purpose. So it is very important to adopt rational and effective treatment processes to make sludge harmless before it is used for agricultural purpose or other purposes. The countermeasures probed here include: establish relative standards concerning sewage sludge treatment and disposal, study techniques of sludge volume reduction and thermal drying, study the utilization of sludge as resources, establish sewage sludge treatment and disposal center and improve the sewage sludge treatment and disposal processes.

Słowa kluczowe

EN

sludge; treatment and disposal; thermal drying; utilization as resource

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska
• Rocznik: 2003
• Tom: Vol. 291, z. 4
• Strony: 511--517
• Opis fizyczny: tab.

Twórcy

autor

Xiaoying Z.

• Beijing University of Technology, 100022

autor

Yuwen Z.

• Beijing University of Technology, 100022

autor

Hongying R.

• Beijing University of Technology, 100022