Study on Industrial Wastewater Characteristics in New Borg El-Arab City, Alexandria, Egypt
2005
ABSTRACT. Over the past 20 years, the new industrial cities were considered
as the main solution to most of the problems facing the metropolitan
industrial areas and to assist in the national industrial
development. In these new communities, industrial and domestic activities
result in the production of vast quantities of wastewater; the
improper disposal of which may cause serious environmental hazards.
New Borg El-Arab Industrial City (NBA) includes 9 residential areas
and 4 industrial zones. The four industrial zones are occupied by 266
running factories belonging to different industrial sectors. All the
domestic sewage as well as the industrial wastewater are treated at an
oxidation pond treatment plant and the plant effluent is used in irrigation
of silviculture areas. The general objective of the present study
was to assess the industrial wastewater characteristics. The preassessment
phase revealed that 64 factories were discharging industrial
wastewater. They could be classified into 9 textile plants, 11 fabricated
metal plants, 7 paper and cardboard plants, 12 chemical plants, 23 food
industrial plants, and 2 glue plants. The results revealed that out of the
64 wastewater-generating industrial plants in NBA city, 39 were
violating the law 93/62 of the wastewater discharge into the sewerage
system for one parameter or more. These were 8 textile companies, 5
fabricated metal companies, 4 paper and allied products companies, 7
chemical companies, 12 food processing companies, the studied 2 edible
oil refinery companies, and 1 glue production company. The frequency
of violation was found to be 59%, 44%, 10%, 56%, 56%, 36%,
10%, and 2.6% as regards pH, SS, settleable solids, BOD, COD,
O&G, PO4
3, and NH3 respectively among the violating plants. The
study proposed some recommendations for the violating companies to
comply with the law limits. These were pollution reduction, pretreatment,
loans and grants, and awareness and training programmes.
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