Among industrial wastewaters, dye wastewater from textile and dyestuff industries is one of the most difficult to treat because of its synthetic origin and complex aromatic molecular structure of dyes. Biosorption using fungi is becoming a promising alternative to replace or sup…
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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…
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…
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…
A study was conducted to investigate the effectiveness of combined processes of electrooxidation and electrocoagulation using stainless steel electrodes for the removal of BOD, ammonia, coliform, turbidity and total suspended solids. In addition to total organics, removal of sol…
Poor public sanitation is one of the principal problems of towns in developing countries. The situation is deteriorating steadily with rapidly advancing urbanization and the lack of adequate infrastructures for the collection and treatment of wastewater. As a result, water-borne…
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…
Documenting Development: Stories of Sanitation, Population and Information Technologies, uses short stories written by Rosa Maria Britton, Fionna Barr, Taufiq Ismail, Mahasweta Devi, Nadine Gordimer and Subcomandante Marcos as springboards to launch a detailed analysis of the ma…
The environment and human health in the State of Kuwait are threatened from improper Municipal Solid Waste (MSW) disposal management. MSW landfills in Kuwait act as dumping grounds rather than safe disposal sites. Basic tools that assist in protecting the environment are not inc…
A field study was conducted at the 55 MGD Dammam wastewater treatment plant employing the carrousel system, to evaluate its overall performance with particular emphasis on nitrogen removal. The results of the study showed that the plant achieved greater than 93% BOD removal, 99%…
A mathematical model which takes into account fill, react and settle periods of the Sequencing Batch Reactor (SBR) was developed and tested against experimental data from the literature. The developed model is capable of predicting microbial cell and substrate concentrations at …
The sludge production rate in the U.S. is increasing rapidly. Effective reduction of sludge mass by solid-liquid separation, though essential, can be a problematic aspect of wastewater treatment. In addition, the fundamental sludge characteristics that affect conditioning and su…
Saudi Aramco has operated Ras Tanura landfarm for about 10 years to treat oily sludge. Landfarming is a managed technology which uses soil microorganisms to biodegrade oily waste. Many oil companies in the world have found that landfarming to be the safest, most cost effective a…
This research discusses the delay in public water and sewage construction projects in Saudi Arabia. It studies frequency, extent, and importance of causes of delay in such projects. Sixty causes were identified and classified by source into 6 groups. A field survey was conducted…
The recovery of recyclables from the waste stream by human scavengers constitutes a common occurrence in Third World cities. It has been estimated that up to 2% of the poor in many countries make a living by engaging in scavenging. A number of studies on scavenging has been cond…
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…
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…