5 is ph neutral compatible with water treatment and has mostly small oh anions that salt out effectively an oil in water flocculant or reverse breaker such as poly diallyldimethyl ammonium chloride can then be used in a known manner to coagulate the dispersed oil the resultant floc can then be easily removed a significant portion of the benzene originally dissolved in the water is removed with the floc subsequently additional benzene can be removed from the effluent by solvent extraction or sparging stripping with a gas the amount of additional benzene which is removed in such a process is increased from that normally seen by the presence of the aluminum chlorohydrate in the water the speed or throughput of a solvent extraction phase can be enhanced by the addition of oil in water demulsifiers such as embreak u00ae 2w119 available from betz process chemicals the woodlands texas in a known manner the effluents which are treated range in temperature from 0 u00b0 f to about 300 u00b0 f the aluminum chlorohydrate may be added to the effluent in an amount ranging from 20 parts to about 100 000 parts per million economical treatments to remove adequate benzene would typically be in the 10 to 1000 ppm range the aluminum chlorohydrate can be added to.