Issue |
E3S Web Conf.
Volume 605, 2025
The 9th International Conference on Energy, Environment, Epidemiology and Information System (ICENIS 2024)
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Article Number | 03002 | |
Number of page(s) | 10 | |
Section | Environment | |
DOI | https://doi.org/10.1051/e3sconf/202560503002 | |
Published online | 17 January 2025 |
Addition of EM-4 (effective microorganisms-4) to reduce BOD (biologycal oxygen demand) of batik cap waste in Pekalongan City
1 Public Health Study Programme, Faculty of Public Health, Teuku Umar University Indonesia
2 Master’s Degree Programme, Faculty of Engineering, Teuku Umar University Indonesia
3 Master of Fisheries Science Study Programme, Faculty of Fisheries and Marine Sciences, Teuku Umar University Indonesia
* Corresponding author: kiswanto@utu.ac.id, wintah@utu.ac.id
The Biologycal Oxygen Demand (BOD) level of batik cap liquid waste in Pekalongan City exceeds the quality standard, which is 3549.67.53 mg/l. The purpose of this study was to determine the effect of the addition of EM-4 on the decrease in BOD of batik cap liquid waste. The method used in this research was pretest-postest with control group. The population of this study was a stamped batik making home industry that does not yet have an IPAL. Samples were taken from liquid batik cap waste from the production process. The study used 3 variations of EM-4 doses, namely 0 ml / l, 5 ml / l, 10 ml / l and 15 ml / l with incubation time for 1, 2, 3 days and replication 3 times. From the results of the study obtained a decrease in BOD with the addition of EM-4 (5 ml/l, 10 ml/l, and 15 ml/l) of 61.24%, 90.71% and 92.42%. BOD levels after treatment decreased to quality standards, namely; 300 mg/l. The results of statistical tests using two-way anova show that there is an effect of the addition of EM-4 on the decrease in BOD of stamped batik liquid waste.
© The Authors, published by EDP Sciences, 2025
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