Pusat Pengajian Kejuruteraan Awam - Tesis

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    Penyingkiran Besi Dan Nutrien Daripada Larut Resap Menggunakan Karbon Teraktif Dan Amfoterik Surfaktan-Diubahsuai Zeolite
    (2014-06)
    Abdullah, Rohana
    Larut resap tapak pelupusan terkenal sebagai air sisa yang kompleks di mana komposisi dan kepekatan bahan pencemar kebanyakannya dipengaruhi oleh jenis sisa dideposit dan usia tapak pelupusan. Rawatan larut resap menggunakan karbon teraktif berbutir (GAC) dalam menyingkirkan besi dan amfoterik surfaktandiubahsuai zeolit (SMZ) bagi pengambilan NH3-N dan nutrien lain (N, P, & K) telah dikaji. Kecekapan penjerapan telah ditentukan oleh satu siri eksperimen penjerapan kumpulan menggunakan peralatan ujian balang. GAC yang di pra-rawat dengan 1.5N NaOH digunakan kerana ia menunjukkan prestasi penjerapan besi yang lebih baik. Selain itu, zeolite yang menjalani pengubahsuaian permukaan dengan 0.03M amfoterik Miranol C2M telah dipilih untuk kajian lanjut. Keputusan kajian kumpulan menunjukkan GAC dapat menyingkirkan 90.29% besi berbanding 50.25% menggunakan KOH sebagai pemendak kimia. Sementara itu, amfoterik SMZ telah dioptimumkan menggunakan RSM dan berkesan menjerap warna, NH3-N dan nutrien lain (N, P, & K) berbanding dengan zeolit asli. Kebolehgunaan amfoterik SMZ sebagai produk baja lambat bebas diperhatikan.
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    Land Use Land Cover Change Analysis Using Multi Spatial Data For Sungai Raya Catchment
    (2014-05)
    Sopian, Mohd Idzadin Mohd
    Water resources are one of the critical importance’s in human life. The rapid development, population growth, migration and urbanization cause water crisis, in quantity and quality. Sungai Raya catchment is catchment in Perak state. Catchment area is located at the edge of the Ipoh city and part of it is included in the Ipoh Plan 2020. In controlling the suburbanisation process while securing water resource, officials of legislators, planners, state and local governmental required Land Use Land Cover (LULC) information in determining the suitable policy. The temporal Land Use Land Cover (LULC) change analysis for Sungai Raya watershed evaluation is conducted from 1990 to 2010, by integrating Digital Elevation Model (DEM), satellite dataset and Geographic Information System (GIS). Study conducted utilizing post-classification comparison and GIS approach, with network detection, pixel base classification and object base classification technique.
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    Kajian Penghasilan Dan Komposisi Enap Cemar Dari Loji-Loji Olahan Air Di Negeri Perak Dan Kesesuaian Sebagai Bahan Binaan
    (2003-05)
    Shuib, Nor Lila
    The objectives of the study are to estimate the quantity of sludge produced, to identify the characteristics of raw water and sludge, and to identify the composition of elements in the sludge with the possibility of using it as a useful material in the future. In order to meet these objectives, several tests were conducted on raw water samples and sludges. These include test on pH, turbidity, total suspended solids, moisture content, specific gravity and composition of elements in the sludge.
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    Kajian Kestabilan Cerun Menggunakan Kaedah Berkebarangkalian Di Lombong Tembaga Mamut, Ranau, Sabah
    (2003-02)
    Mohd Yusof, Mior Termizi
    Suatu kajian kestabilan cerun telah dijalankan di cerun-cerun sebuah lombong dedah iaitu Lombong Tembaga Mamut yang terletak di Ranau, Sabah. Geologi dan permineralan dalam batuan telah dikaitkan dengan kestabilan cerun lombong. Mod kegagalan telah dikenalpasti serta kajian kestabilan yang lalu telah dilihat semula. Dua jenis kegagalan iaitu yang dikawaloleh struktur geologi dan yang tidak dikawaloleh struktur geologi telah dikenalpasti. Beberapa analisa kestabilan cerun berketentuan telah dirujuk semula tetapi kaedah berkebarangkalian digunakan untuk menganalisa cerun-cerun di Lombong Tembaga Mamut.
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    Assessment of the flow characteristics of a dam physical model with anti-vortex structure using computational fluid dynamics
    (2023-05-01)
    Thiennieesh A/L Manogaran
    Dams are structures that are being used to oppose or halt the flow of water in a stream or river. Unfavourable flow characteristics in the dam can cause problems such as fluctuation in pressure, loss in discharge capacity as well as problematic flow conditions in tunnels ad turbines. This research describes the physical modelling performed on the physical model of a dam reservoir with a distorted scale of 1:100. Particle Image Velocimetry (PIV) approach was implemented since it has evolved into one of the most prominent non-intrusive flows measuring techniques and was able to measure flow parameters such as velocity and discharge which had a good data agreement with Nixon Streamflow Velocity Meter. Free-surface vortices (FSV) were also detected through velocity vector instantaneously. CFD modelling enables to analyse flow patterns in the model, such as free-surface vortices. The model of the 1:100 scale dam reservoir was generated, computationally meshed, and modelled in FLUENT under ANSYS 2019 R3 at two different water levels to observe the FSV formations. To mitigate those FSV formations, anti-vortex plates with two distinct plates—square and wedge—were used. From the findings square plates outperform wedge plates because square it lowers the speed of a fast-flowing fluid and reduces it into a laminar flow rather of a turbulent flow, which benefits vortex class deterioration. Data from the simulation and experimental shows a strong agreement in terms of velocity less than 20%. From this study, the modification could be adapted to avoid the FSV formation in the real dam model when designed under suitable guidelines for vortex structures.