Properties of Laboratory Wastewater Having Influence Heavy Metals Treatment Efficiency by Chemical Precipitation
Issued Date
2024-01-01
Resource Type
eISSN
22998993
Scopus ID
2-s2.0-85199083731
Journal Title
Journal of Ecological Engineering
Volume
25
Issue
8
Start Page
72
End Page
83
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Ecological Engineering Vol.25 No.8 (2024) , 72-83
Suggested Citation
Saengchut P., ladtem N., Wonglertarak W., Kokaphan C., Obpat S., Klaiklung P. Properties of Laboratory Wastewater Having Influence Heavy Metals Treatment Efficiency by Chemical Precipitation. Journal of Ecological Engineering Vol.25 No.8 (2024) , 72-83. 83. doi:10.12911/22998993/188787 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/100023
Title
Properties of Laboratory Wastewater Having Influence Heavy Metals Treatment Efficiency by Chemical Precipitation
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Abstract
The influence of laboratory wastewater properties on heavy metals treatment efficiency by the chemical precipitation included aluminium sulphate (Al2 (SO4 )3 ) and poly aluminium chloride (PAC) using a stepwise multiple regression method. The laboratory wastewater properties showed high acidity approximately 0.75 and a highly turbid approximately 667.41 NTU that TSS (705.48 mg/L), COD (480.00 mg/L) and heavy metals such as Zn did not exceed the standards while Cu, Mn and Cr have levels exceeded the standards. Aluminium sulphate( Al2 (SO4 )3 ) coagulant has treatment efficiency for reducing heavy metals at a pH of 9.00 to 73.62%, 99.94%, 98.43%, 68.76% and 99.25% for various heavy metals (Cu, Fe, Mn, Zn and Cr) respectively with original laboratory wastewater properties that parameters of laboratory wastewater include TSS, BOD, and pH having the highest influence on heavy metals treatment efficiency. The parameters of laboratory wastewater having the highest influence on heavy metals treatment efficiency when using poly aluminium chloride (PAC) were pH, COD, DO, and BOD when at a pH of 9.00 has treatment efficiency for reducing heavy metals to 73.67%, 99.94%, 98.45%, 69.76%, and 99.26% for various heavy metals (Cu, Fe, Mn, Zn, and Cr) respectively.