PENGOLAHAN LIMBAH CAIR BATIK MENGGUNAKAN TEKNOLOGI MEMBRAN NANOFILTRASI DI KOTA PEKALONGAN

Pekalongan is the most famous batik city in Indonesia. UNESCO was crowned Pekalongan as the 
 most creative batik city. Along with the coronation of Batik city, emerging problems related to the 
 pollution of waste batik that ultimately damage the environment. It needs to be done fast and 
 environmentally friendly batik waste processing. One alternative is the processing of batik waste using 
 membrane technology. To know the performance of membrane nanofiltration in color allowance, 
 COD, BOD, TSS, and metal Pb used batik liquid waste with different concentrations. This research 
 was conducted to analyse the influence of pressure (4, 5, and 6 bar) against flux and the degree of 
 windection of each of the parameters. The optimum pressure of membrane nanofiltration for all 
 parameters is 6 bar. The results showed that the results of the rejection of colorants, COD, BOD, TSS 
 and Pb respectively without dilution, 10 times dilution, 20 times dilution, 30 times in successive 
 dilution is (98,29%-99.87%), (92,10-100%), (100%), (99,25-100%), ( 95,25-100%). The results 
 showed that the color allowance, COD, BOD, TSS and Pb Metal had fulfilled the quality standards for 
 the optimum pressure of 6 bar according to Ministry of Environment Regulation No. 5 year 2004 and 
 Local Regulations of Central Java No. 5 year 2012. Potential of membrane nanofiltration technology 
 can be used for the processing of batik liquid waste.
 Keywords: Batik Waste, Nanofiltration, Pressur, Color