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A column study of riverbank filtration process for water clarification

A column study of riverbank filtration process for water clarification / Adilah Kamaruzaman
Kajian terdahulu telah membuktikan bahawa sistem penapisan tebing sungai (RBF) boleh menghasilkan air yang mudah alih kerana ia telah digunakan oleh kebanyakan negara, antaranya ialah negara Eropah, India, Korea Selatan, China dan Jordan. Sistem RBF merupakan teknologi yang berkesan dan rawatan semula jadi yang terdiri daripada telaga pam berkapasiti tinggi yang terletak bersebelahan dengan sungai. Ia memerlukan proses pengecilan semulajadi yang berlaku sebagai air permukaan (SW) menyusup masuk melalui dasar sungai untuk menghasilkan air mudah alih. Terdapat tiga objektif kajian ini, iaitu untuk menentukan taburan saiz zarah, kekonduksian hidraulik dan keliangan media penapis, kadar penyingkiran pada kekeruhan, organik semula jadi (NOM), warna dan pepejal terampai (SS) selepas penapisan, dan juga untuk mencari kondisi yang optimum bagi (kadar aliran, keadaan lapisan yang berbeza) untuk kajian turus. Dua eksperimen telah dijalankan, ialah analisis tanah dan eksperimen turus. Eksperimen turus telah dijalankan dengan mengunakan media penapis (pasir(C1), halangan tiruan(C2) dan gabungan antara pasir dan halangan tiruan(C3)) dan kadar aliran (20, 25 and 40 mL/min) yang berbeza. Hasil daripada eksperimen yang dijalankan menunjukkan bahawa pasir mempunyai gred tanah yang kurang bagus, kekonduksian hidraulik dan keliangan yang rendah berbanding dengan halangan tiruan. Hasil peratusan penyingkiran menunjukkan media penapis yang digunakan dalam C3 merupakan peratusan penyingkiran paling tinggi untuk kekeruhan, NOM, warna dan SS yang diukur, iaitu 28.51%, 29.41%, 59.09% and 71.43%. Kemudiannya, kadar alir (20 mL/min) menunjukkan peratusan penyingkiran paling tinggi untuk kekeruhan and SS (28.51% and 50%) tetapi peratusan paling tinggi untuk NOM dan warna adalah pada kadar alir paling tinggi, iaitu 40 mL/min (15.03% and 59.09%). _______________________________________________________________________________________________________ Previous studies have been proven that riverbank filtration (RBF) system can produce a portable water as it was used in many countries such as Europe, India, South Korea, China and Jordan. RBF system is an efficient and a natural treatment technology which consists of high capacity pumping wells that located adjacent to rivers. It takes an advantage of natural attenuation processes that occurs as the surface water (SW) infiltrate through the riverbed to produce portable water. There are three objectives of this research, to determine the particle grain size distribution, hydraulic conductivity, and porosity of filter media, to determine the removal of turbidity, suspended solids (SS), natural organic matter (NOM) and colour after filtration and to identify the optimum condition of (flow rate, different layer conditions) for column study. The experiment done was soil analyses and the column experiment. The column experiment was conducted by using different filter medias (sand (C1), artificial barrier(C2) and mixture of sand and artificial barrier(C3)) and flow rates (20, 25 and 40 mL/min). The result of soil analyses for sand shows that the sand has a poorly-graded soil, low hydraulic conductivity and low porosity compared to the artificial barrier. The result of the percentage removal shows that the filter media used in C3 was the highest percentage removal for all parameters (turbidity, NOM, colour and SS) measured, which are 28.51%, 29.41%, 59.09% and 71.43%. Then, the flow rate of 20 mL/min shows the highest percentage removal of turbidity and suspended solids (28.51% and 50%) but for NOM and colour, the highest percentage removal was 40 mL/min (15.03% and 59.09%).
Contributor(s):
Adilah Kamaruzaman - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875006549
Language:
English
Subject Keywords:
riverbank filtration (RBF) system; portable water; a natural treatment technology
First presented to the public:
6/1/2016
Original Publication Date:
5/24/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 95
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-05-24 15:04:00.774
Date Last Updated
2020-05-06 16:23:36.576
Submitter:
Mohd Jasnizam Mohd Salleh

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