Journal of Advances in Environmental Health Research

Journal of Advances in Environmental Health Research

Feasibility study of coagulation system to greywater treatment and economical comparison with electrocoagulation in mining areas

Document Type : Original Article

Author
Seyed Morteza Moosavirad
Department of Mining Engineering, Higher education complex of Zarand, Shahid Bahonar University of Kerman, Kerman, Iran
10.22102/jaehr.2016.45371
Abstract
Coagulants exert a significant influence on removing turbidity, TSS and COD. This study has examined the effects of poly-aluminium chloride (PAC), aluminium sulphate (alum) and ferric chloride on removal of turbidity, TSS, COD from greywater in residential complexes of miners working in decorative stone mines. Also, a comparison was undertaken with the electrocoagulation system to find out whether it was economical. Samples were collected over three days from the outlet pipes of greywater in the downstream of a village. The samples were sent to the laboratory to measure their organic materials. However, the Jar test was implemented by using all three coagulants, at concentrations of 100 to 1200 ppm. The results illustrate that the highest percentage of turbidity, COD and TSS removal were 98.24%, 94% and 77.25% respectively, which are related to PAC coagulant. The lowest cost to remove the organic materials in the coagulation method was harvested US $ 0.09/m3 for alum and howbeit. The cost for electrocoagulation method yielded US $ 0.05/m3 water.
Keywords
Electrocoagulation
Coagulation
Greywater treatment
Mining areas
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Journal of Advances in Environmental Health Research
Volume 4, Issue 4
Autumn 2016
Pages 190-198