Pengaruh kualitas air limbah sentra industri penyamakan kulit sitimulyo terhadap karakteristik air sungai

The characteristic of waste discaharged in tanning industry depends on variety and describe of processing and technology are used. Liquid effluent is high-grade category. Waste water comes from beam house process and tanning process, and the dangerous of waste is trivalent and hexavalent of chrome from tanning chrome process. The management of waste in the tanning industry is holding and handling start at raw material, auxiliaries, processing, finishing the last product and the end of pipe treatment. The objective of the research was to know the influence of waste water quality in tanning industry centre Sitimulyo for water river characteristic. The sample was examine in 5 months and the eight parameters were limited by SK Gunernur No : 281/KPTS/1998: Waste water analysis in tanning industry was BOD 31,80mg/l, COD 660,84 mg/l, TSS 221,60 mg/l, Chrom 0,07 mg/l, N-Amonia 13,36 mg/l, Sulfide 13,56 mg/l, Oil/fat 4,80 mg/l, and pH 7,53. Characteristic water river befor received pollutant was BOD 0,75 mg/l, COD 12,18 mg/l, TSS 10,00 mg/l, Chrom 0,01 mg/l, N-Amonia 2,07 mg/l, Sulfide 0,17 mg/l, oil/fat 4,00 mg/l, and pH 7,48. Characteristic water river after received polutan was BOD 8,17 mg/l, COD 38,42 mg/l, TSS 14,00 mg/l, Chrom 0,06 mg/l, N-Amonia 0,47 mg/l, Sulfide 0,002 mg/l, Oil/fat 4,21 mg/l and pH 7,33. Stated that there is a correlation between waste water quality in tanning industry centre Sitimulyo with the river. Although water river characteristic to be change, but still full fill the requiremnts.