Reducing Bod and TSS Levels in Batik Wastewater Using Moringa Seeds Coagulant (Moringa Oleifera)

Batik wastewater contains suspended particles and high organic matter originating from the process of pelodorant and cloth washing, so that batik wastewater has BOD and TSS characteristics that exceed the quality standards of Per Men LHK No. 16 of 2019 concerning Textile Industry Wastewater Quality Standards. To overcome this problem, there is a need for wastewater treatment, such as coagulation. Moringa seeds powder is one of natural coagulant that has potentioal to be used in coagulation. This study was conducted to analyze the characteristics of Moringa seeds as a natural coagulant and its optimum dose in reducing TSS and BOD concentration in batik wastewater. FTIR was carried out to determine the Moringa seeds substances characteristics. Variations of dose natural coagulant Moringa seeds used were 2, 6, 10, 14, 18, dan 22 gr/L. The test was carried out using jar test with a stirring speed of coagulation and flocculation were100 rpm for 3 min and 40 rpm for 12 min, respectively settling time was set for 45 min. Based on the results, TSS concentration was decreased significantly for about 84.47% at 18 gr/L. While for BOD, the concentration was reduced about 37.84% at 22 gr/L. From correlation analysis through the SPSS software program, it was found that decrease in TSS concentration has weak correlation with BOD.