DocumentCode :
1677053
Title :
Study on Coagulation Pretreatment of Laboratory Wastewater
Author :
Guo Aihong ; Niu Fusheng
Author_Institution :
Coll. of Resources & Environ., Hebei Polytech. Univ., Tangshan
fYear :
2008
Firstpage :
3073
Lastpage :
3075
Abstract :
The wastewater discharged from laboratories does harm to the environment, and there is no mature treatment method of it. According to the characteristics of laboratory wastewater , the coagulation treatment of the laboratory wastewater using inorganic polymer flocculants, such as PAC and PFS, was studied in this paper. The coagulation factors also studied include the optimum dosages of these flocculants, the pH value , the settling time and the different wastewater quality. The following research results were obtained: (1) PAC was the most appropriate flocculant in coagulation treatment of laboratory wastewater. (2) It can obtain the best effect when the dosage of PAC was 80 mg/l, pH was 5 and the settling time was 30 min.On this condition, the removal rate of turbidity was more than 95%,and the removal rate of COD was more than 40%. (3) Coagulation treatment can be a unit of laboratory wastewater processing , having a good pretreatment effect, Lay good foundation for the follow-up processing.
Keywords :
coagulation; flocculation; laboratories; pH; wastewater treatment; coagulation factors; coagulation pretreatment; flocculants; inorganic polymer flocculants; laboratory wastewater; polyaluminium chloride; turbidity rate; wastewater quality; Aluminum; Coagulation; Educational institutions; Environmental economics; Iron; Laboratories; Surface contamination; Wastewater treatment; Water pollution; Water resources;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
Type :
conf
DOI :
10.1109/ICBBE.2008.1099
Filename :
4535979
Link To Document :
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