Sains Malaysiana 46(12)(2017): 2375–2381

http://dx.doi.org/10.17576/jsm-2017-4612-14

Do Aquatic Macrophytes Configuration Mode Impact Water Quality?

(Adakah Mod Konfigurasi Akua Makrofit Mengesan Kualiti Air?)

HUI-HUI WANG, JING-LAN LIU, RONG ZHANG, JIA-KAI LIU, YU-QI ZOU

& ZHEN-MING ZHANG^*

College of Nature Conservation, Beijing Forestry University, Beijing 100083, China

Received: 3 March 2014/Accepted: 25 April 2017

ABSTRACT

This paper had selected watermifoil (Myriophyllum veticillatum Linn.), softstem bulrush (Scirpus validus Vahl) and yellow-flowered iris (Iris wilsonii), in showing the water purification through different configuration. AFIs with different combination of aquatic plants were set up to purify the water quality for 50 days. This paper aimed to evaluate chemical and vegetative characteristics of each type of plant and also to find configuration of aquatic plants to maximize the contaminants removal efficiency by artificial floating island (AFI). The result indicated that the trophic waterbody promote the growth of plants and all of the AFIs have the ability to purify water and reduce contaminants. However, the most effective way is by combination of these three aquatic plants which has strong capacity to remove COD, NO3-, total nitrogen, total phosphorous and improve pH levels. Watermifoil (Myriophyllum verticillatum Linn.) is better than yellow-flowered iris (Iris wilsonii) and softstem bulrush (Scirpus validus Vahl) in disposing water pollutants.

Keywords: Aquatic plants; configuration; water purification

ABSTRAK

Kertas ini telah memilih tumbuhan watermifoil (Myriophyllum veticillatum Linn.), softstem bulrush (Scirpus validus Vahl) dan yellow-flowered iris (Iris wilsonii) yang menulenkan air melalui konfigurasi berbeza. AFI dengan kombinasi berbeza tumbuhan akuatik disediakan bagi menulenkan air selama 50 hari. Kajian ini bertujuan menilai ciri kimia dan vegetatif setiap tumbuhan yang dikaji di samping mencari konfigurasi tumbuhan akuatik bagi memaksimumkan kecekapan penyingkiran bahan cemar melalui pulau terapung buatan (AFI). Keputusan kajian menunjukkan jasad air trofik menggalakkan pertumbuhan tumbuhan dan semua kombinasi AFI berupaya untuk menulenkan air dan mengurangkan bahan cemar. Kombinasi yang paling berkesan adalah kombinasi ketiga-tiga tumbuhan kerana mempunyai kapasiti yang tinggi untuk menyingkirkan COD, NO3-, jumlah nitrogen, jumlah fosforus dan memperbaiki aras pH. Watermifoil (Myriophyllum verticillatum Linn.) adalah lebih baik berbanding yellow-flowered iris (Iris wilsonii) untuk digabungkan dengan softstem bulrush (Scirpus validusVahl) dalam menyingkirkan bahan cemar.

Kata kunci: Konfigurasi; penulenan air; tumbuhan akuatik

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*Corresponding author; email: zhenmingzhang@bjfu.edu.cn