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Removal of iron and manganese using ejectors and roughing filter media

Removal of iron and manganese using ejectors and roughing filter media / Nur Aisyah Farhanah Salleh
Masalah kualiti air bagi semua sumber air bawah tanah, masalah kualiti air yang paling biasa adalah kehadiran berlebihan besi dan mangan. Kualiti air bawah tanah boleh ditambah baik menerusi proses pelenting dengan cara meningkatkan pemerangkapan udara atau pemindahan jisim oksigen menggunakan pelenting dan proses penapisan dengan menggunakan saiz penapis yang berbeza. Kajian telah dijalankan untuk mengkaji kecekapan pengudaraan dengan menggunakan 2 jenis pelenting yang berbeza dan kecekapan penyingkiran besi dan mangan dengan menggunakan saiz penapis yang berbeza. Pelenting 1 diambil daripada kajian sebelum ini oleh, manakala pelenting 2 direka berdasarkan parameter yang disiasat. Sampel air bawah tanah telah diperolehi daripada Rumah Anak Yatim Nur Kasih, Taiping. Model makmal untuk pelenting telah digunakan untuk proses pengudaraan dan penapis batu kapur digunakan untuk proses penapisan. Dengan menggunakan air bawah tanah, pelenting 1 mampu mencapai kecekapan pengudaraan paling tinggi (E20=0.6005) berbanding pelenting 2 (E20=0.5841). Air bawah tanah didapati mengandungi kecekapan penyingkiran yang paling tinggi untuk besi iaitu 53.4% (kepekatan akhir 1.23 mg/L) dengan menggunakan pelenting 1 dan 89.7% (kepekatan akhir 0.03 mg/L) dengan menggunakan pelenting 2. Bagi mangan pula, kecekapan penyingkiran paling tinggi ialah 50% (kepekatan akhir 0.8 mg/L) dengan menggunakan pelenting 1, manakala untuk pelenting 2 kecekapan pengudaraan paling tinggi ialah 79.3% (kepekatan akhir 1.23 mg/L). Walaupun kepekatan akhir besi dan mangan masih melebihi daripada standard air minuman, iaitu 0.3 mg/L and 0.1 mg/L masing-masing, hasil kajian ini akan menyediakan pengubahsuaian kepada reka bentuk pelenting dan meningkatkan potensinya untuk digunakan sebagai kaedah rawatan untuk air bawah tanah di Rumah Anak Yatim Nur Kasih. _______________________________________________________________________________________________________ From all the water quality problems of groundwater sources, the most common type of water quality problem is the excessive presence of iron and manganese. The quality of groundwater could be improved through aeration process by increasing the air entrainment/mass transfer of oxygen using ejector and filtration process by using different sizes of filter media. An investigation of the ejector was carried out to study the aeration efficiency by using 2 different types of ejector and removal efficiency of iron and manganese by using different sizes of filter media. Ejector 1 was taken from the previous study, meanwhile ejector 2 was designed according to the new parameter investigated. The groundwater samples were obtained from Rumah Anak Yatim Nur Kasih, Taiping. A laboratory model of ejector was used for aeration process and limestone roughing filter was used for the filtration process. Using groundwater, ejector 1 was able to achieve the higher aeration efficiency (E20=0.6005) compared to ejector 2 (E20=0.5841). It was found that the highest efficiency removal for iron was 53.4% (residual concentration of 1.23 mg/L) using ejector 1 and 89.7% (residual concentration of 0.03 mg/L) using ejector 2. For manganese, the highest efficiency removal was 50% (residual concentration of 0.8 mg/L) using ejector 1, meanwhile for ejector 2 the highest was 79.3% (residual concentration of 1.23 mg/L). Although, the residual concentration of iron and manganese were still higher than drinking water standard of 0.3 mg/L and 0.1 mg/L respectively, the results will provide modifications to the design of the ejector and increase its potential to be used as a treatment method for groundwater at Rumah Anak Yatim Nur Kasih.
Contributor(s):
Nur Aisyah Farhanah Salleh - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875006819
Barcode : 00003106696
Language:
English
Subject Keywords:
groundwater sources; water quality; limestone roughing filter
First presented to the public:
6/1/2017
Original Publication Date:
3/22/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 81
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-03-22 10:34:25.659
Date Last Updated
2020-06-01 12:11:41.62
Submitter:
Mohd Jasnizam Mohd Salleh

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Removal of iron and manganese using ejectors and roughing filter media1 2018-03-22 10:34:25.659