Kajian ini menunjukkan reka bentuk dan prestasi satu tanah bencah buatan berskala makmal iaitu tanah bencah aliran subpermukaan dalam mengolah air larut lesapan dari tapak pelupusan Pulau Burung. Dua set eksperimen A dan B disediakan. Tanam lima belas tumbuhan Cyperus haspan (menerong atau bilisjantan) dalam setiap set ujikaji. Gunakan air paip sebagai nutrien dalam model A (sebagai kawalan) dan air larut lesapan dalam model B. Pasir dan batu kelikir digunakan sebagai media. Ujikaji telah dijalankan untuk masa tahanan dua minggu. Sepanjang tempoh kajian, sampel influen dan efluen telah diuji untuk pHnya, kekeruhan, warna, jumlah pepejal terampai (TSS), COD, BOD5, NH3-N, Fosforus Terjumlah (TP), Nitrogen Terjumlah (TN) dan kandungan logam berat Fe, Mg, Mn and Zn. Keputusan menunjukkan yang penubuhan tanah bencah berpotensi menyingkirkan kira-kira 7.2-12.4% pH, 39.3-86.6% kekeruhan, 63.5-86.6% warna, 59.7-98.8% TSS, 39.2-91.8 % COD, 60.8-78.7% BOD5,
29.8-53.8% NH3-N, 59.8-99.7% TP, 33.8-67.0% TN, 34.9-59.0% Fe, 29.0-75.0% Mg, 51.2-70.5% Mn , dan 75.9-89.4% Zn. Kajian ini membuktikan yang air larut lesapan boleh diolah dengan berkesan menggunakan tanah bencah aliran subpermukaan disebabkan oleh kadar kecekapan penyingkiran tinggi.
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This study presents the design and performance of a pilot scale of sub-surface constructed wetlands in treating leachate taken from Pulau Burung Sanitary Landfill.
Two sets of experiment A and B were prepared. Each set was planted with fifteen Cyperus haspan plant. Pipe water was used as nutrient in experiment A (as control) and leachate in experiment B. Sand and gravel were used as substrate media. The experiment was operated for two weeks retention time. During the operation time, the influent and effluent samples were tested for its pH, turbidity, color, total suspended solid (TSS), COD, BOD5, NH3-N, total phosphorus (TP), total nitrogen (TN) and also for heavy metals Fe, Mg, Mn and Zn concentrations. The results showed that the constructed wetlands were capable of removing about 7.2-12.4% of pH, 39.3-86.6% of turbidity, 63.5-86.6% of color, 59.7-98.8% of TSS, 39.2-91.8 % of COD, 60.8-78.7% of BOD5, 29.8-53.8% of NH3-N, 59.8-99.7% of TP, 33.8-67.0% of TN, 34.9-59.0% of Fe, 29.0-75.0% of Mg, 51.2-70.5% of Mn, and 75.9-89.4% of Zn. High removal efficiencies in this study proved that leachate can be treated effectively using subsurface constructed wetland.
Leachate treatment using sub-surface flow constructed wetland by cyperus haspan_Ida Zunadiya Ahmad Zuki_A9_2011_NI