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CHARACTERISTICS AND FEASIBILITY STUDY OF SEWAGE SLUDGE FOR LANDSCAPING APPLICATION IN XI’AN, CHINA
Autori: Bohan Yin, Qin Zheng, Rixia Zhang, Sheping Wang, Xinan Liu, Zhengliang Yang
Data aparitiei: July 2013
Revista: Environmental Engineering and Management JournalVol. 12Nr. 7
ISSN: 1843 - 3707
Pret: 25.00 RON    
N.A.
Abstract
By investigating the basic physicochemical characteristics, nutrients (nitrogen, phosphorus and potassium) and heavy metal
concentrations of the excess sludges from four wastewater treatment plant (WWTP) in Xi’an city, the feasibility of applying
sewage sludge to landscaping in Xi'an was studied. The results showed that the basic physicochemical properties of sewage
sludge satisfy the requirement of most plants growth. The sewage sludges are rich of organisms, nitrogen and phosphorus, but
relatively lacking in potassium. Meanwhile, most sewage sludges can meet landscaping requirements for contents of heavy
metals. The experiments on seed germination suggested that sludge has some inhibiting effects on plants' germination and
growth. Based on the comprehensive analysis, sewage sludge has been demonstrated with potential application of urban
landscaping.


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