Experiment of Dehydration Capability of Municipal Sludge

Author

Zhou Cuihong ; Chu Qingdong ; Tang Sichen ; Zhang ChengHu

Author_Institution

Dept. of Environ. Eng., Beijing Inst. of Pectrochemical Technol., Beijing, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

Sludge is difficult to be dewatered without any pretreatment. The experiment of dewatering sludge by ultrasound, thermal hydrolysis and electrical pretreatment were studied. Ultrasound pretreatment proves it can adjust the structure of sludge, which will be restructure and change the water form increasing the water content which could be dispel easily. Thermal hydrolysis pretreatment disassembles agglomeration of Extracelluar Polymeric Substances (EPS), experimental results show that the bound water of sludge decrease with a longer treatment time and higher temperature, the water content is 84.74% at 170°C. The pretreatment of electrical dehydration gains good dewaterability as voltage increased in the AC electric field than ultrasound, thermal hydrolysis pretreatment.

Keywords

sludge treatment; agglomeration; dehydration capability; dewatering sludge; electrical dehydration; electrical pretreatment; extracelluar polymeric substances; municipal sludge; thermal hydrolysis; ultrasound; Electric fields; Polymers; Sludge treatment; Solids; Temperature; Ultrasonic imaging; Ultrasonic variables measurement; Voltage; Wastewater treatment; Water resources;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5517451

Filename

5517451