Tapak pelupusan sampah adalah salah satu kaedah terkenal dalam menguruskan sampah perbandaran kerana senang diuruskan dan murah. Antara masalah utama tapak pelupusan sampah adalah penghasilan larut resapan bergantung daripada jumlah bahan organik, ammonia, nitrogen dan logam berat. Larut resapan muda berpotensi berada dalam keadaan asid disebabkan oleh kandungan asid lemak tepu dengan nilai pH di antara 6-7 atau kurang. Larutan resapan mengandungi pelbagai pencemar organik dan bukan organik dan diketogikan sebagai pencemar bermasalah dan berbahaya kepada ekosistem kerana boleh meresap ke dalam tanah dan mencemarkan air bawah tanah. Dalam kajian ini, elektrogumpalan telah digunakan sebagai kaedah rawatan alternatif untuk merawat larut resapan. Kaedah ini menggunakan peralatan yang mudah dan senang dikendalikan. Objektif keseluruhan untuk kajian ini adalah untuk menentukan keadaan optimum yang mempengaruhi kadar keberkesanan kaedah elektrogumpalan dalam merawat larut resapan. Terdapat tiga faktor yang dipertimbangkan semasa ujian ini iaitu voltan, masa rawatan dan penambahan garam sebagai elektolite. Karbon digunakan untuk kedua-dua elektrod dengan penambahan natrium klorida atau tiada penambahan natrium klorida dalam larutan resapan. Julat voltan yang digunakan adalah 3V, 6V dan 9V dan julat masa rawatan adalah 10 minit, 20 minit, 30 minit dan 40 minit. Kesan penyingkiran yang dianalisis adalah warna, kekeruhan, keperluan oksigen kimia dan jumlah partikel terampai. Penyingkiran optimum warna, kekeruhan, keperluan oksigen kimia dan jumlah partikel terampai adalah 97.34% dengan menggunakan 6V dan 10 minit masa rawatan, 42.54% dengan menggunakan 3V dan 30 minit masa rawatan, 54.98% dengan menggunakan 9V dan 40 minit masa rawatan dan 86.76% dengan menggunakan 6V dan 30 minit masa rawatan masing-masing. Oleh itu, elektrogumpalan terbukti dapat merawat larutan resapan dengan berkesan.
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Landfilling is one of the most popular methods of municipal solid waste disposal due to its simplicity in terms of disposal and low cost. One of the main problems with the solid waste landfill sites is leachate depending on large amount of organic matter, ammonia, nitrogen and heavy metals. Young leachate tends to be acidic due to presence of volatile fatty acid with pH normally in the range of 6-7 or lower. Leachate contains a variety of organic and inorganic contaminants and is classified as problematic and extremely dangerous pollutants to ecosystem as it can percolate through permeable soil and can pollute groundwater. In this study, electrocoagulation process was used as an alternative to treat leachate. This method is characterized by simple equipment and easy operation. The overall objectives of this study was to determine the optimum treatment condition that influence the efficiency of electrocoagulation method to treat leachate wastewater. There are three control parameters that need to be considered during this test such as voltages, treatment time and the present of sodium chloride as electrolyte. Carbons were used as electrode for both cathode and anode with or without sodium chloride. The ranges of voltages applied were 3V, 6V, and 9V and the ranges of treatment time were 10 minutes, 20 minutes, 30 minutes and 40 minutes. The research work involve the analysed of effects on colour, turbidity, Chemical Oxygen Demand (COD), total suspended solids (TSS). The optimum removal of color, turbidity, COD and total suspended solids were 6V with 10 minutes treatment time, 3V with 30 minutes treatment time, 9V with 40 minutes treatment time and 6V with 30 minutes treatment time respectively. Therefore, the percentage efficiency of pollutant removal on color, turbidity, COD and total suspended solids were 97.34%, 42.54%, 54.98% and 86.76% respectively. Therefore, electrocoagulation is proven in treated young leachate effectively.
Treatment of young leachate using electrocoagulation process / Nur Hayati Mohd Yusoff