02165nas a2200241   4500000000100000000000100001000000100002008004100003653002100044653002400065653002100089653002400110653002700134100001700161700001200178700001400190245008200204856015400286300001200440490000600452520144500458022002001903       2020                            d10aActivated sludge10aAnaerobic treatment10aBatik wastewater10aConstructed wetland10aEffluent quality index1 aA. Pramugani1 aS. Soda1 aT.A. Argo00aCurrent situation of batik wastewater treatment in Pekalongan City, Indonesia  uhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85093506216&doi=10.2208%2fJOURNALOFJSCE.8.1_188&partnerID=40&md5=bdc35ec08e111be7d70c7fa399d61b45  a188-1930 v83 aBatik is an Indonesian technique of wax-resist dyeing applied to whole cloth. The designation of the Indonesian batik as a UNESCO Intangible Cultural Heritage has increased demand for batik. Consequently, Indonesia faces severe environmental problems caused by waste/wastewater generated by batik enterprises. However, current circumstances in batik and textile wastewater treatment have not been fully reported. This paper reports the current situations in three wastewater treatment plants (WWTPs) for batik wastewater in Pekalongan City based on field survey and data analysis. Jenggot Village has used a horizontal subsurface flow constructed wetland. Kauman Village has used an activated sludge process. Banyuurip Village has used anaerobic biological treatment followed by constructed wetland. Those WWTPs have conformed to effluent quality standards for temperature, biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids, total chrome, total ammonia, and pH, except for BOD and COD concentrations at Jenggot Village WWTP during maintenance period. Influent and effluent quality scores of those WWTPs were evaluated through the effluent quality index (EQI). The respective EQI scores of influent and effluent of the WWTPs were comparable to water resource class III and II scores in Indonesia. The EQI scores suggest that the Banyuurip Village WWTP was the most effective at batik wastewater treatment.  a21875103 (ISSN)