Performance Assessment of Three Wastewater Treatment Plants Producing Effluents for Irrigation

Abstract

Three wastewater treatment plants, in Kuwait, producing effluents for irrigation were assessed. The assessment was directed to determine the characteristics of the raw wastewater, the quality of the treated effluents, and the efficiency of the various steps of treatment. The assessment of the quality of treated effluents was based on the standards established by the Ministry of Public Works (MPW) according to the reuse plans of the effluents for irrigation. Analyses were carried out for conventional parameters, trace metals, toxic trace organics as well as bacteria. Results of analyses showed that only one plant was producing effluent meeting the requirements of MPW. The results of this preliminary investigation indicated that despite the toxic constituents in the raw wastewater, they did not constitute a significant problem in the treatment process; two of the three treatment plants violated the reuse standards with respect to the conventional parameters.

A simulation-based evaluation for a strategic residential wastewater network master plan

“…At the Ardiya station, the Carbon Oxygen Demand (COD) removal efficiency was 78% which was considered unacceptable. This might have been attributed to the technology used or due to overloading the system (Ghobrial 1993). As a result, Al-Ardiya WWTP was transformed to a pumping station and a pre-treatment to remove coarse particles and degreasing.…”

“…The station is also equipped with a scrubber system to treat air extracted and reduce emitted odors (Anonymous 2009). Also, although overloading Al-Jahra WWTP did in fact affect the tertiary treated effluent at some point in time, where the effluent didn't meet the MPW water quality criteria (Ghobrial 1993). The Biological treatment and technology was upgraded later on to meet the national standards by both the Ministry of Public Works and the Ministry of Health (Karam 2010).…”