EFEKTIVITAS TANAMAN KAYU APU (Pistia stratiotes L.) DALAM MENURUNKAN KADAR BOD5 DAN COD LIMBAH CAIR INDUSTRI TAHU

Difya Rismawati, Imam Thohari, Fitri Rochmalia

Abstract


ABSTRACT
Pistia stratiotes L. is one of the phytoremediator plants. Pistia stratiotes L. are able to grab the mud using their roots and produce excess nutrients that cause pollution. This absorption occurs because the substance is chelate or phythocelatin which is excreted by the root tissue of Pistia stratiotes L.. Pistia stratiotes L. in reducing levels of BOD5 and COD in tofu industry waste. The research method is pre-experimental. The research design used is the One Group Pre-Post Test Design. The study used 2 replications with the amount of tofu industrial wastewater each as much as 17 liters. The density of Pistia stratiotes L. used is control 14 mg / cm2, 25 mg / cm2 and 35 mg / cm2. Data analysis was performed analytically using a different test (One Way Anova).The most optimal plant density in decreasing BOD5 and COD levels is the density of 35 mg/cm2 with BOD5 levels of 41.05 mg / l (80.7%) and COD of 91.74 mg / l (82.02%). Statistical tests showed a significant difference of 0,000 (p-value <α 0.05) meaning a significant difference between BOD5 and COD levels with variations in density of Pistia stratiotes L.. Industrial owners can use woody plants as phytoremediator agents to reduce levels of BOD5 and COD pollutants.
Keywords: density; Pistia stratiotes L.; tofu industry waste.



DOI: http://dx.doi.org/10.33846/sf.v9i2.698

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