【正文】 rt of this was consumed by large industries such as phosphate mining。 the production of potash, cement, ceramics and soft drinks。 as well as the energy sector. Almost all local industries have suffered from shortages in water supplies during the last two decades. The water shortage is also the limiting factor for the establishment of new industries as well as the expansion of certain high water consumption processes such as oil shale processing [5].In a recent paper, Mohsen and Jaber [6] discussed the potential of industrial wastewater reuse in Jordan. Industrial water requirements, wastewater production, types of pollutants in industrial wastewater and the technologies for wastewater treatment were evaluated. A total of 30 industries have been reviewed. The total effluent from these 30 industries was estimated at approximately 10,200 m3/d. Of this amount approximately 4,400 m3/d are discharged into the public sewerage system, which is about 3% of the total flow. The amounts of metals to be controlled are: 6800 kg/y, 3000 kg/y, 45 kg/y, 65 kg/y,20 kg/y, 2 kg/y, 25 kg/y, 60 t/y and 8 t/y of Cr, Zn, Cu, Pb, Ni, Cd, Sn, Fe and A1, respectively. Nineteen industries, which discharge mainly organic polluted process wastewater, are mostly food industries. Approximately t/d of BOD are discharged from these industries. Of these approximately t/d BOD are discharged to the public sewerage system and about t BOD are used for irrigation.It has been shown that most of the selected industries require some treatment of their waste water. It is remended to carry out further studies to establish the type of wastewater pretreatment strategies and their estimated capital cost. There is a need for introduction of cleaner technology in the selected industries. This could include substitution of raw and auxiliary materials。 water and energy are saving, recirculation of water, recovery of chemicals, improved process control, waste minimization and good housekeeping.Industry can be considered as a source of significant amounts of reusable effluents [710].Thus, industry should be encouraged to invest in better water efficiency, more recycling and management. Normalized water use indices can be developed for each industry in order to allocate only as much water as necessary to achieve their production targets.In this paper the potential of industrial wastewater reuse in Jordan39。s A1Hussein thermal power station (HTPS) was investigated. A prehensive review of the processes involved, industrial waste generation and water requirements was carried out. Areas of potential improvements and conservation have also been identified.2. Industrial overviewSteam electric power plants are production facilities of the thermal electric power industry. A steam electric power plant product is electrical energy。 its primary raw materials are fuel, air and water. Currently, four fuels are used in a steam electric power plant: three fossil fuels。 coal, natural gas, and fuel oil。 and uranium, the basic fuel of mercial nuclear power.The mercial production of electrical energy requires the utilization and conversion of another form of energy. Presentday steam electric power plants utilize the chemical energy of fossil fuels or the atomic energy of nuclear fuels to produce electrical energy in four stages. The first stage consists of burning the fuel in a boiler unit and converting water into steam with heat from bustion. In the second stage the high temperature,Highpressure steam enters a turbine where energy in the form of shaft work is removed。 the turbine shaft is coupled to a generator, which converts the mechanical energy into electrical energy. In the third stage the steam leaving the turbine is condensed to water, transferring heat to the cooling medium, which is typically water. Finally, the condensate is reintroduced into the boiler to plete the cycle. Five major unit processes are associated with the four production stages of a steam electric power plant:?The storage and handling of fuelrelated materials both before and after use? The production of steam? The expansion of the steam in a turbine which drives the electricity generator? The condensation of the steam leaving the turbine and its return to the boiler? The generation of electrical energy from rotating mechanical energyOther miscellaneous operations, such as plant sanitation and water treatment, are associated with power plants. The unit processes for a typical oilfired plant are illustrated in Fig. 1.The waste stream and water requirement are organized according to the following unit processes: fuel management, steam production, steam expansion. Steam condensation, electricity generation, and miscellaneous operation. The fuel management unit process includes the transport, storage, and handling of fuel oil. Oil spills can result in significant power plant waste streams and water consumption. Spillage and subsequent washdown can contaminate the plant drainage system and consume large amounts of water. Power plants are usually designed to recycle condensed steam for boiler feed water as means of conserving water. Efficient plant operation requires boiler feed water to be highly pure. However, dissolved solids are concentrated in the recycled condensate as a result of evaporative water loss. To maintain total dissolved solids below allowable limits for boiler operation, a controlled amount is sometimes bled off. This volume, called boiler blow down, is treated as wastewater and is replaced with highpurity makeup water.Water treatment for makeup water typically includes suspended solids and hardness removal, scale and corrosion control, and demineralization.Suspended solids removal usually requires such operations as clarification and filtration. Hardness removal is typically acplished by limesoda softening, which requires the addition of lime and caustic soda. Ammonia and phosphate are typically added for corr