This paper evaluates current operational practices in municipal solid waste landfills in Kuwait to provide existing knowledge on uncontrolled landfilling and associated problems of solid waste disposal in developing countries. The current landfilling practices are safe neither for humans nor for the environment. The landfill sites receive all kinds of wastes such as food wastes, oil products, debris, dead animals, agricultural wastes, chemical wastes, wastewater and sewage sludge. The wastes are dumped, spread and compacted in an uncontrolled manner and cover material is not applied regularly. Dust created within the landfill site and gas emissions cause a public nuisance. The characteristics of leachate formed indicate high organic content and presence of heavy metals, salts and nutrients. There are no provisions for leachate or landfill gas collection at the landfill sites. Recommendations for adjustment in landfill operation have been made in recognition of the transition period that is experienced in proceeding from the past and present to the future management of landfills in Kuwait to safeguard the public health and protect the environment.

Sewage sludge

Landfill Gas

10.1177/0734247x0202000403

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Citations (19)

Sand filtration of wastewater for tertiary treatment and water reuse

Desalination (2004)

Mohamed F. Hamoda Ibrahim A. Al-Ghusain Nayef Z. Al-Mutairi

Filtration (mathematics)

Backwashing

Secondary treatment

Total suspended solids

Aerated lagoon

Sand filter

10.1016/s0011-9164(04)00189-4

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Citations (161)

Seasonal variation pattern of physicochemical and microbial parameters in a wastewater treatment plant

Desalination and Water Treatment (2020)

Abdalrahman Alsulaili Bushra Y. Al-Buloushi Mohamed F. Hamoda

Wastewater discharge contains a high level of contaminants that require sufficient treatment for further reuse and legitimate applications.This study examined the effect of seasonal variations on treatment performance.Data was generated daily from January 2013 to December 2016, analyzing the samples from different stages that is, influent, secondary and tertiary effluents.The results for microbial parameters showed that in the influent, fecal coliforms had the highest levels in fall, while the coliform count had the highest levels in winter, with Salmonella, fecal streptococci and fungi presenting better resistance and survival in spring.However, the physicochemical parameters, for example, pH and conductivity, of the influent and treated effluents did not vary with season, but slight variations occurred in all other parameters.In fall, chemical oxygen demand, volatile suspended solids and total suspended solids showed minimal changes in the tertiary-treated effluent, while biochemical oxygen demand 5 showed no significant changes in all seasons.The coefficient of variation and coefficient of reliability showed minimal variability in plant performance and highly reliable conditions for water reuse in irrigation, indicating compliance with effluent discharge standards and stable operating conditions.Identifying seasonal variations in parameters promote the optimization of the operational conditions and performance of wastewater treatment plants.

Seasonality

Variation (astronomy)

10.5004/dwt.2020.26461

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Citations (8)

Reconciling water circularity through reverse osmosis for wastewater treatment for a hyper-arid climate: a life cycle assessment

Sustainable Water Resources Management (2022)

Esra Aleisa Asmaa M. Al-Mutairi Mohamed F. Hamoda

Ultrafiltration (renal)

10.1007/s40899-022-00671-8

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Citations (8)

Evaluation of landfill leachate in arid climate—a case study

Environment International (2003)

Anwar Al-Yaqout Mohamed F. Hamoda

Bioreactor landfill

Landfill Gas

10.1016/s0160-4120(03)00018-7

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Citations (176)

Biomass retention and performance of anaerobic fixed‐film reactors treating acetic acid wastewater

Biotechnology and Bioengineering (1987)

Mohamed F. Hamoda Kevin J. Kennedy

Abstract An acetic‐acid‐based synthetic wastewater of different organic concentrations was successfully treated at 35°C in anaerobic downflow fixed‐film reactors operated at high organic loading rates and short hydraulic retention times (HRTs). Substrate removal and methane production rates close to theoretical values of complete volumetric chemical oxygen demand (COD) removal and maximum methane conversion were obtained. A high concentration of biofilm biomass was retained in the reactor. Steady‐state biofilm concentration increased with increased organic loading rate and decreased HRTs, reaching a maximum of 8.3 kg VFS/m 3 at a loading rate of 17 kg COD/m 3 day. Biofilm substrate utilization rates of up to 1.6 kg COD/kg VFS day were achieved. Soluble COD utilization rates at various COD concentrations can be described by half‐order reaction kinetics.

10.1002/bit.260300218

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Citations (18)

Evaluation of single vs. staged mesophilic anaerobic digestion of kitchen waste with and without microwave pretreatment

Journal of Environmental Management (2013)

Haleh Shahriari Mostafa Warith Mohamed F. Hamoda Kevin J. Kennedy

Acidogenesis

Mesophile

Biogas

Hydraulic retention time

10.1016/j.jenvman.2013.03.042

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Citations (90)

Investigation of Petroleum Refinery Effluent Treatment in an Aerobic Fixed‐film Biological System

Water and Environment Journal (1987)

Mohamed F. Hamoda A. Al‐Haddad

SYNOPSIS T he feasibility of treating a synthetic toxic waste and a petroleum refinery effluent was evaluated using a four‐stage, fixed‐film aerated bioreactor with a 50 I capacity and a surface area‐to‐volume ratio of 72. The process performance at various waste strengths and influent flow rates was found satisfactory. Organic loading proved to be a better operational or design parameter. Treatment efficiency decreased as the loading was increased. An organic loading of 42 g COD/m2d or less is recommended to ensure good quality effluent. The reactor coped with organic and hydraulic overloads because of the good oxygen transfer capacity and the considerable quantity of attached biomass attained. Staging of the reactor was effective in damping excessive loadings. Treatment of the refinery waste in the bioreactor removed up to 80 per cent of the COD and reduced the oil, sulphide and amm.N concentrations substantially, but polishing of reactor effluent using alum treatment improved effluent quality for potential reuse.

Refinery

Hydraulic retention time

10.1111/j.1747-6593.1987.tb01217.x

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Citations (12)