Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polyacrylamide

Zhen Liang; Yanxin Wang

doi:10.1007/s12583-010-0097-x

Volume 21 Issue 3

Jun 2010

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Journal of Earth Science > 2010 > 21(3): 340-346.

Zhen Liang, Yanxin Wang. Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polyacrylamide. Journal of Earth Science, 2010, 21(3): 340-346. doi: 10.1007/s12583-010-0097-x

Citation:

Zhen Liang, Yanxin Wang. Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polyacrylamide. Journal of Earth Science, 2010, 21(3): 340-346. doi: 10.1007/s12583-010-0097-x

Zhen Liang, Yanxin Wang. Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polyacrylamide. Journal of Earth Science, 2010, 21(3): 340-346. doi: 10.1007/s12583-010-0097-x

Citation:

Zhen Liang, Yanxin Wang. Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polyacrylamide. Journal of Earth Science, 2010, 21(3): 340-346. doi: 10.1007/s12583-010-0097-x

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Pretreatment of Diosgenin Wastewater Using Polyferric Sulfate and Cationic Polyacrylamide

doi: 10.1007/s12583-010-0097-x

Zhen Liang^{1, 2},
Yanxin Wang^{1
,
,}

1.
School of Environmental Studies and Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan, 430074, China
2.
School of Environmental and Civil Engineering, Wuhan Institute of Technology, Wuhan, 430074, China

Funds:

the National Natural Science Foundation of China 40830748

China Postdoctoral Science Foundation 20080440976

More Information

Corresponding author: Yanxin Wang, yx.wang@cug.edu.cn
Received Date: 23 Sep 2009
Accepted Date: 06 Jan 2010
Publish Date: 01 Jun 2010

Abstract

Abstract

Coagulation-flocculation process was applied in the pretreatment of diosgenin wastewater. Polyferric sulfate was used as primary coagulant and a cationic polyacrylamide (CPAM) was used as coagulant aid. Using jar test procedure, the influence of the main operating parameters, such as effluent pH and coagulant dosage in the coagulation performance was investigated. The effective pH was found to be in the range of 6.5–8.0 and coagulant dosage was 100 mg/L. Under the optimal conditions, 15% chemical oxygen demand (COD) removal efficiency was achieved and the residual turbidity was less than 20 NTU. The presence of CPAM substantially promoted the reduction of residual turbidity with the appropriate CPAM dosage in the range of 2–5 mg/L.
- diosgenin wastewater,
- coagulation,
- polyferric sulfate,
- cationic polyacrylamide

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References(21)

References

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