The EAPR process using water hyacinth (Eichornia crassipes) on the wastewater treatment of chemical laboratory had been evaluated. The purpose of the EAPR process was to decrease the BOD, COD and heavy metal concentration in the wastewater. The effectiveness of the process on the wastewater treatment was evaluated using COD, BOD, and heavy metal (Pb, Cu) concentration, respectively. The result showed that the EAPR process decrease the COD, BOD, Pb and Cu in the 4 h of EAPR process. Those concentrations were met the water quality standard of class IV according to government regulation No. 82/2001 regarding the water quality management and water pollution control of the Republic of Indonesia.
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