INTEGRATED SYSTEM OF BIOFILTER AND CONSTRUCTED WETLAND FOR SUSTAINABLE BATIK INDUSTRY

Abstract

Wastewater produced during the batik production process contains toxic and difficult to decompose chemicals which can cause an increase in power of hydrogen (pH), biological oxygen demand (BOD), chemical oxygen demands (COD), total suspended solids (TSS), and heavy metals. Wastewater produced from batik or the textile industry is generally an organic compound that is difficult to decompose, which can cause environmental pollution, especially from the aquatic environment. The effluent from the batik industry in the boiling process does not meet the quality standards set by Regulation of the Minister of Environment of the Republic of Indonesia No. 5/2014 on wastewater quality standards. Natural wastewater treatment systems such as constructed wetlands (CWs) and biological sand filter be a relevant alternative in treating wastewater because of its efficiency, cost and operation. This research aims to treat batik industry wastewater using biofilter-horizontal sub surface flow constructed wetlands (HSSFCWs) integration. The
results showed a decrease in efficiency for each COD, TSS, and oil and fat parameters 72.67-86.67%; 95.85-98.18%; dan 79.47-90.04%. The results of statistical analysis showed that there was a significant influence between biofilter performance and biofilter-HSSFCWs integration in a period of 3 days, 5 days and 7 days with the dependent variable. The water from batik industry waste processing still exceeds the established quality standards so that the treated water is not allowed to be discharged into water bodies. The treated water also cannot be designated by the community because it does not meet the water quality criteria in the specified water class.