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Phytoremediation of fish farm wastewater incorporating physical treatment

Phytoremediation of fish farm wastewater incorporating physical treatment / Navin Kumar Rajantrakumar
Fitopemulihan mempunyai potensi untuk rawatan dan penggunaan semula air sisa dalam sistem akuakultur intensif dan teknik ini mengurangkan pencemaran yang disebabkan oleh ternakan ikan dan akan memelihara kualiti air. Dalam kajian ini, prestasi fitopemulihan oleh macrophytes Spirodela Polyrhiza digabungkan dengan rawatan fizikal pada air sisa ladang ikan akan disiasat. Objektif kajian ini adalah untuk menilai prestasi rawatan fizikal digabungkan dengan fitopemulihan. Pengurangan nutrien oleh S.polyrhiza dari air sisa kolam ikan dan kualiti air selepas fitopemulihan telah dipantau. Fitopemulihan air sisa oleh S. polyrhiza telah dijalankan dalam tanah lembap berskala kecil untuk 14 hari. Keputusan menunjukkan bahawa penapis Fendi dengan saiz liang 20 μm lebih berkesan dari Sterlitech (3.0 μm) dan Sartorius (0.2 μm) dari segi kadar turasan (L/m2) dan segi kos berdasarkan kuantiti 2 L yang diperlukan untuk eksperimen ini. Fendi menunjukkan kadar turasan tertinggi iaitu 25000 L/m2 dan kos yang paling rendah untuk menapis 2 L air sisa dengan RM 37.40. Untuk pengurangan nutrien, tapisan lebih berjaya berbanding kawalan kerana ia menunjukkan nilai akhir yang lebih rendah pada hari 14. Nitrat, fosfat dan ammonia menunjukkan nilai terakhir 9.4 mg/l, 0.27 mg/l dan 1.4 mg/l masing-masing. Kesemua tiga nutrien dapat memenuhi Piawai A (untuk melepaskan ke dalam mana-mana perairan pedalaman dalam kawasan tadahan yang merupakan had yang paling ketat), had pelepasan untuk badan air tertutup. Bagi kualiti air, tapisan dapat memenuhi Piawai A untuk tahap COD dan jumlah had pepejal terampai pelepasan mencapai nilai akhir 109 mg/l dan 20 mg/l. Nilai pH pada hari 14 iaitu 7.45 adalah dalam lingkungan Piawai A dan kekeruhan menurun dari 110 NTU kepada 25 NTU dalam tempoh 14 hari iaitu di bawah kelas IIA (bekalan air II) yang melepasi untuk rawatan konvensional untuk menghasilkan air minuman yang bersih. S. polyrhiza menunjukkan kenaikan biojisim untuk ditapis dan kawalan. Kajian ini menunjukkan bahawa gabungan rawatan fizikal dengan fitopemulihan menunjukkan potensi yang lebih besar dalam merawat air sisa kolam ikan _______________________________________________________________________________________________________ Phytoremediation has the potential for treatment and reuse of wastewater in intensive aquaculture systems. This technique serves the purpose of reducing the pollution caused by fish farming which will preserve the surface and ground water quality. In this study, the performance of phytoremediation incorporated with physical treatment by Spirodela Polyrhiza macrophytes on fish farm wastewater is investigated. The objectives of the study are to evaluate the performance of physical treatment incorporated with phytoremediation. The nutrient uptake by S.polyrhiza from the fish farm wastewater and water quality after phytoremediation was monitored. The wastewater phytoremediation by S. polyrhiza was conducted in small-scale constructed wetlands for 14 days. The results showed that filter Fendi with pore size 20 μm out-performed Sterlitech (3.0 μm) and Sartorius (0.2 μm) in terms of filtrate rate (L/m2) and costing based on the quantity required of 2 L for this experiment. Fendi showed the highest filtrate rate of 25000 L/m2 and the lowest cost for filtering 2 L of wastewater with RM 37.40. For nutrients uptake, filtered was more successful compared to control as it resulted in a lower final value at the end of day 14. The final nitrate, phosphate and ammonia level were 9.4 mg/l, 0.27 mg/l and 1.4 mg/l respectively. All three nutrient level were able to meet the standard A (applicable to discharge into any inland waters within catchment area which is the most stringent limit), discharge limit for enclosed water body. As for water quality, filtered was able to meet the Standard A for COD level and total suspended solids discharge limit achieving final value of 109 mg/l and 20 mg/l. The pH level day 14 of 7.45 was in the range of Standard A and as for turbidity it decreased from 110 NTU to 25 NTU in 14 days which was below the class IIA (water supply II) which passes for conventional treatment to produce clean drinking water. S. polyrhiza showed biomass increment for both filtered and control. This study indicates that phytoremediation incorporated with physical treatment shows a greater potential in the treating fish farm wastewater.
Contributor(s):
Navin Kumar Rajantrakumar - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007545
Language:
English
Subject Keywords:
Phytoremediation; treatment; aquaculture systems
First presented to the public:
6/1/2018
Original Publication Date:
7/18/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 60
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-07-31 11:48:04.758
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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