The Egyptian Pollution Abatement Project (EPAP) aims for developing five Egyptian sectors,
which are as follows, Food industry, Pulp and paper industry, Metallurgical industries,
Engineering Industry and Textile Industry. The paper manufacturing process is extremely
water intensive, fresh water consumption reduction has a lot of advantages either on the
environment & economic benefits such as, decreasing heating fresh water energy costs, in
addition to reducing the pollution load via reducing the volume of effluent & thus lowering
the cost of processing municipal waste and recovering usable fabric. However, a risk of
reducing the usage of fresh water, like contaminants build – up in the water recycling loop,
which affects the product quality. One of Egyptian paper and pulp companies, which
produces 27 MT per a year of writing & printing paper had been chosen as a case study for
the industrial sector. Water demand for the mill achieved by combination of both of fresh
water & regenerated process water, that’s to remove all suspended solids, which are present
in water streams and allows water usage in several purposes, such as, chemical dilution,
vacuum pump seal water, etc. The study goals to propose a plan for reducing of fresh water
while preserving product quality, meeting process needs via constructing an optimization
program (GAMS) to reduce fresh water demand, verify the model with the material balance
results and studying the effect of changing the quality of regenerated water with fresh water
demand.
