Wastewater is a term applied
to any type of water that negatively impacts the quality of the water. It
includes all effluent from household, commercial establishments and
institutions, hospitals, industries and so on. It also includes stormwater and
urban runoff, agricultural, horticultural and aquaculture effluent. Due to its
negative impact can finally influence human’s health and the balance of ecosystems,
wastewater treatment and disposal is an important part of protecting and
preserving water resources.
Urban wastewater usually refers to domestic waste water (from
residential settlements) or a mixture of domestic waste water with industrial
waste water (from premises used for trade or industry) and/or run-off rain
water. It’s one of the main city pollution, which also needs to be treated
properly and timely.
In this paper, to give an answer to the choice of methods of treatment
of raw sewage and to raise awareness of the pollution of the river R’dom which
is a source of irrigation in town Sidi Kacem, the authors evaluated the
pollution by the physic-chemical characterization of discharged urban
wastewaters.
Two samples were collected in a periodic way, and most part of the
qualitative and quantitative analyses was accomplished in situ and in the laboratory. The physical and chemical parameters
of samples were measured via different equipment. Then the measurements
average, as well as the minima and maxima of the various organic and mineral
physic-chemical parameters were gathered and the ratios were calculated in
order to know if the organic matter was easily biodegradable. And the authors
analyzed and discussed all the physical and chemical parameters one by one.
The results obtained showed that the domestic effluents exceeded the
national standards of rejection in Morocco, which required an intervention of
the competent jurisdictions in order to preserve the public health and to
protect the environment. And it’s also necessary to install an efficient sewage
treatment plant to ensure a sustainable development.
Article by Omar El Rhaouat, et al, from
Morocco.
Full access: http://mrw.so/20Lgyz
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Image by drinkcokemaxfactor, from
Flickr-cc.
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