This dissertation is the first application of Monte Carlo simulation (MCS) to design of water rates in a developing country. A deterministic net revenue model and its stochastic counterpart were developed and calibrated using data from a financial study and a contingent valuatio…
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This thesis focuses on informal actors involved in urban solid waste recovery. More specifically, it aims to confirm the existence, within these activities, of two distinct fringes based on their access facility. One of them is stagnant if not volutional, and only serves as a me…
Burgeoning environmental crises in cities have sparked academic and practical inquiry into urban environmental issues. My review of academic literature and government and donor policies and publications reveals two weaknesses: (1) researchers depict cities homogeneously, failing…
The water supply and sanitation situation in the developing world is still very inadequate. In Africa, for example, more than 47 percent of urban households are without access to safe water. The condition is even worse in rural areas. This study reports a meta-analysis of more t…
This study is a field evaluation of slow sand filtration as a tertiary treatment at pilot scale level. Three slow sand filters were constructed at Al-Khobar STP site and were operated for about 15 months. Four different flow rates of 8, 10, 16 and 20 l/min at three different san…
The proposed thesis incorporates a statistical approach to evaluate the performance of slow sand filtration, with an emphasis on removal efficiency of indicator microorganisms. The data for the analysis of removal efficiency have been taken from 15 months study on slow sand filt…
Phenols in trace quantities are usually present in the treated effluent of many wastewater treatment plants. Phenol contamination of drinking water even at 1 μg/L concentration can cause significant taste and odor problems. Activated carbon used generally as an adsorbent to remo…
Lack of adequate infrastructural services, particularly water supply and sanitation are major constraints to economic and industrial growth in developing countries. Contaminated water resulting from inappropriate sewage disposal is one of the most serious threats to health and p…
L'objectif de cette étude est d'évaluer les impacts de l'application de résidus produits par le désencrage du papier sur les propriétés physiques de divers types de sol. Cette recherche vise aussi à décrire, à l'aide de modèles conceptuels, la relation existant entre certains pa…
Membrane Bioreactors have gained a considerable attention in the recent years for treating industrial wastes with an extensive advancement in the membrane technology. A Crossflow Membrane Bioreactor (CF-MBR) is one of the modifications to the conventional activated sludge proces…
Inorganic contaminants, while transported through the bentonite layer, are chemically adsorbed onto the particle surfaces and exhibit a delay in solute breakthrough in hydraulic barriers. Transport of inorganic leachate contaminants through bentonite occurs by advection, diffusi…
This study is aimed to evaluate slow sand filtration as tertiary treatment of secondary wastewater effluents at pilot scale using different sizes of local sands. It was found that the percent removal for all the parameters analyzed were decreasing by decreasing the sand depth an…
The objective of this study was to develop an Indonesia urban excreta/wastewater disposal prioritizing model based on government strategies and conditions, as well as characteristics. A priority model for selecting project localities for the urban excreta/wastewater disposal pro…
This study is a field evaluation of slow sand filtration as a tertiary treatment process at pilot-scale. It was found out that slow sand filtration is, indeed, very effective in removing contaminants from secondary effluents. In particular, the bacterial removal levels were exce…
Water resources developments in Indonesia create serious socio-economic problems related to the relocation of people, because of the high population density of the country. Due to the urgent population demands, however, the developments will have to continue, but with special em…
Surface water contamination has been a global concern for years, especially in the developing world where high-quality centralized water treatment systems are often lacking. An alternative point-of-use household water treatment technology widely adopted in many developing countr…
Horseradish peroxidase (HRP) is a robust enzyme that catalyzes a wide variety of reactions involving aromatic compounds. The enzyme once activated by hydrogen peroxide initializes polymerization reactions of different aromatic compounds. The products of reaction are water insolu…
A municipal landfill in the Eastern Province of Saudi Arabia was selected to evaluate the effects of landfill leachate on the underlying groundwater. This landfill represents a typical Saudi Arabia landfill; without liner or leachate collection system. Furthermore, this landfill…