The effectiveness of photomediation of apu (Pistia stratiotes L.), water hyacinth (Eichhornia crassipes) and water bamboo (Equisetum hyemale) plant on reducing bod levels in tofu factory waste water

Abstract

Background: The increase in BOD in tofu wastewater is caused by soybeans as a raw material for tofu so that tofu wastewater contains protein, carbohydrates, fats and amino acids. These organic materials affect the high phosphorus, nitrogen, and sulfur in the water, so that the wastewater produced contains organic matter. tall one. Methods: The research design used was an experimental research type with Pretest-Posttest with Control Group. Data was collected by examining samples at the Cimahi City Environmental Laboratory. Findings: BOD levels of tofu factory wastewater before treatment were 4860 mg/L, the high levels of BOD can be overcome by plant phytoremediation. This study aims to determine the effectiveness of phytoremediation of apu wood (Pistia stratiotes L.), water hyacinth (Eichhornia crassipes) and water bamboo (Equisetum hyemale) on reducing BOD levels in tofu factory wastewater. Conclusion: The results of the statistical test using thetest Dependent T and One Way Anova. The results of statistical tests using T Dependent showed that there was a significant difference before after giving water cabbage plants with p value= 0.035, while the results showed no significant differences before after giving water hyacinth plants with p value= 0.059 and water bamboo plants with p value= 0.074 to decrease the BOD levels of tofu factory wastewater. While the results of thestatistical test One Way Anova showed that there was a significant difference after the administration of water cabbage, water hyacinth and water bamboo plants with p value= 0.022 to the decrease in BOD levels of tofu factory wastewater. The most effective use of plants in reducing BOD levels in tofu factory wastewater is water cabbage, this plant can reduce BOD levels in tofu factory wastewater by 33.26%. Novelty/Originality of this article: This research can be used for tofu factory wastewater treatment by utilizing water cabbage plants with the phytoremediation method