THE USE OF AQUATIC PLANTS (Equisetum hyemale and Echinodorus palaef) IN TANNERY WASTEWATER TREATMENT TO REDUCE POLLUTANT LOAD WITH WETLAND AND ADSORPTION SYSTEM

Sri Sutyasmi, Heru Budi Susanto

ABSTRACT


Wastewater treatment using wetland and adsorption system were carried out to improve the properties of secondary settling pond’ s outlet. The purpose of this research was to reduce pollutant level from the secondary settling pond’s outlet so it could be used in the wetland stage and the treated wastewater could be reused. Wastewater effluent from secondary settling pond was discharged into adsorber and subsequently into wetland by flow rate arrangement. Laboratory simulation was carried out to find out the capacity of aquatic plants in reducing the pollutant level. The result showed that the BOD, COD and TSS value of wastewater from laboratory simulation were 191 mg/l, 6.24 mg/l, and 24 mg/l, and after the wetland stage were 409 mg/l, 10.32 mg/l, and 145 mg/l respectively. The quality of wastewater met the standard SNI 06-0649-1989 Water for tannery.

Keywords: adsorption, aquatic plant, wastewater treatment, wetland 

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