“Wetland” ditakrifkan sebagai sesuatu kawasan tanah di mana tanah adalah tepu dengan air sama secara kekal atau bermusim. Kawasan itu juga perlu dilindungi, sekurang-kurangnya sebhagian, dengan kolam air yang cetek. “Wetland” termasuk beberapa kawasan paya, tanah paya, tanah gambut, sama ada semula jadi atau buatan, kekal atau sementara, air static atau mengalir, segar payau atau masin, termasuk kawasan air marin dan kedalaman yang ada pada air surut tidak melebihi enam meter dan boleh menggabungkan zon riparian dan zon-zon pingir laut bersebelah dengan “wetland”. Jika “wetland” tidak diuruskan degan baik, penyingkiran kepekatan pencemar tidak dapat berfungsi dengan efektif. Penyingkiran pencemaran hendaklah dikawal untuk memastikan kualiti “wetland” berada dalam keadaan yang bagus. Kajian ini, Indeks Kualiti Air (WQI) semakin bertambah baik berdasarkan jumlah peratus pembuangan menurut Jabatan Alam Sekitar Malaysia (DOE).
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Wetland can be defined as an area of land where the soil is saturated with water either permanently or seasonally. Such area also needs to be covered, at least partially, with shallow pools of water. Wetland include some areas of marsh, fen, peat land or water, whether natural or artificial, permanent or temporary, with water and the depth of which at low tide does not exceed six meters and may incorporated riparian and coastal zones adjacent to the wetland. If wetland does not manage very well, the pollutant removal concentration of wetland is not efficient. So, the pollutant removal need to be controlled to ensure the water quality of the wetland is in good level. In this study, the Water Quality Index (WQI) is increased based on percentages removal according to Department of Environment (DOE).
Assessment of water quality in constructed wetland 2 at University Sains Malaysia, Engineering Campus / Muhammad Hafiz Ali Ramdan