Impact of batik wastewater pollution on macrobenthic community in Pekalongan River

摘要

Batik is a cultural wealth and identity of Indonesia. Batik industries produce a huge and complex wastewater. Batik wastewater is usually directly discharged to sewers and accumulated in the river. Pekalongan River is one of the rivers in Pekalongan that accumulates a lot of batik wastewater pollution. The aim of this research was to determine the pollution status of Pekalongan River and to analyze the influence of batik wastewater pollution on the macrobenthic community in Pekalongan River. The research was conducted from January to March 2015 in Pekalongan River, Central Java Province. This study used a survey method on five observation stations. Based on the macrobenthic presence, Pekalongan River was slightly polluted at the upstream, severely polluted at the river that passes through residential areas and urban areas with a lot of batik industries, and very substantial polluted at the downstream and estuaries. Macrobenthics found at the upstream and the river that passes through residential areas were influenced by DO and TSS. Macrobenthics found at the river that passes through urban areas that dense with batik industry were influenced by zinc, phenol, and sulfide. Macrobenthics found at the downstream were influenced by copper, cobalt, depth, lead, flow speed, light penetration, temperature and pH. Macrobenthics found at the estuaries were influenced by ammonia, oil/grease, BOD, TDS, COD, and chromium VI.