Fitopemulihan menggunakan tumbuh-tumbuhan untuk memulih tanah dan air sisa
yang tercemar. Efluen daripada akuakultur mempunyai banyak pepejal, nitrogen dan
fosforus di dalam ekosistem akuatik. Dengan menggunakan rawatan air sisa
konvensional untuk merawat air kumbahan kolam ikan, ia melibatkan kos yang tinggi
untuk menjalankan dan mengekalkan.Prestasi fitopemulihan oleh Lemna sp. dan
Spirodela sp. dinilai untuk rawatan air sisa kolam ikan. Tumbuhan akna tumbuh atas
air sisa dari koalm ikan. Tujuannya adalah untuk menentukan maklumat nutrien dan
kesannya terhadap biomass. 4 kolam buatan manusia telah ditubuhkan untuk mengkaji.
Antaranya ialah Spirodela sp., Lemna sp., campuran (Lemna sp. dan Spirodela sp.)
dan kawalan (tanpa tumbuhan). Kualiti air dipantau juga. rawatan oleh fitopemulihan
telah dilakukan di pelantar kolam untuk 2 minggu. Kecekapan penyingkiran fosfat
ialah 89% dan 85% oleh Lemna sp. dan Spirodela sp. masing-masing. Spirodela sp.
mengurangkan kepekatan nitrat kepada 3.6 mg/l, manakala Lemna sp. mengurangkan
kepada 7.9 mg/l. Spirodela sp. mencapaikan 89.0% dalam kecekapan penyingkiran
fosfat berbanding dengan Lemna sp. hanya 85.1%. Lemna sp. dan Spirodela sp.
mengurangkan kekeruhan daripada 16.2 ± 4.0 NTU kepada 3.2 ± 2.4 NTU dalam masa
6 hari. Walau bagaimanapun, Lemna sp. and Spirodela sp. tidak berubah nilai pH.
COD pepejal daripada air sisa kolam ikan. Secara keseluruhannya, Lemna sp. dan
Spirodela sp. mempunyai kelebihan untuk menyingkirkan nutrien, meningkatkan
kualiti air dan pertumbuhan biojisim
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Phytoremediation employs plants to remove contaminated soil and wastewater. The
effluents from aquaculture has large amount of suspended solids and enriched with
nitrogen and phosphorus in aquatic ecosystems. By using conventional wastewater
treatment to treat fishpond wastewater, the cost is expensive to run and maintain. The
performance of phytoremediation by using macrophytes, such as Lemna sp. and
Spirodela sp., are evaluated on treatment of fishpond wastewater. The duckweeds
were fed with wastewater from Catfish production facility. The objective was to
determine the nutrient update and its effect towards biomass. 4 pond rigs were set up
to study. They were Spirodela sp., Lemna sp., mix (Lemna sp. and Spirodela sp.) and
control (without plant). The water quality was monitored as well. The treatment by
phytoremediation was done in raceway pond rig for 2 weeks. The efficiency of
phosphate removal was 89% and 85% by Lemna sp. and Spirodela sp. respectively.
Spirodela sp. reduced nitrate concentration to 3.6 mg/L, while Lemna sp. managed to
reduce to 7.9 mg/l. Spirodela sp. archived 89.0% in phosphate removal efficiency
compared to that of Lemna sp. at only 85.1%. Lemna sp. and Spirodela sp. reduced
turbidity from 16.2 ± 4.0 NTU to 3.2 ± 2.4 NTU in just 6 days. However, both Lemna
sp. and Spirodela sp. did not change much in pH value. COD volatile solids of
fishpond wastewater. In overall, Lemna sp. and Spirodela sp. were good for nutrient
removal, improve water quality and growth of biomass.
Performance of lemna sp. and spirodela sp. on nutrient removal from fish farm wastewater / Neoh Sun Hao