The Use of Phytoremediaton with an Up-flow System to Reduce Pollutants at Anaerobic Pond Outlets II Palm Oil Mill Effluent (Elaeis guineensis Jacq.)

Abstract

<p>Palm oil plantations are one of the commodity crops that have an important role in the economy in Indonesia, namely as an export commodity that generates foreign exchange in addition to oil and gas. The increase in world demand for the palm oil commodity encourages the growth of the palm oil industry so that the estimate of liquid waste also increases. If the liquid waste is disposed of directly into the water without proper management, it will have a negative impact on the surrounding aquatic environment. This study aims to find the best phytoremedian in reducing the pollutants of WWTP II anaerobic ponds in the palm oil mill industry and to get the reduction. Research activities took place from July 2020 to September 2020 in the field and Analysis Laboratory of the Lampung State Polytechnic. This study uses an up-flow system with a stagnant condition and is carried out on a laboratory scale by testing using descriptive methods. The phytoremedian used in this study were water nails (<em>Azolla pinnata</em>) (A1), water spinach (<em>Ipomoea aquatica</em>) (A2), cattail (<em>Typha angustifolia</em>) (A3) and water bamboo (<em>Equisetum hyemale</em>) (A4). The results showed that the best phytoremedian in reducing the observation variable of palm oil mill effluent outlet anaerobic pond II was water spinach (<em>Ipomoea aquatica</em>). Phytoremedian <em>Ipomoea aquatica</em> at the end of the treatment was able to reduce the COD value with a decrease in percentage of 41.29%, increase the pH to 8.57, reduce the TSS value to 124 mg/L, the turbidity value to 21 mg/L, the total N value to 0.021 mg/L, the K value becomes 2.59 mg/L.</p>