With some measures to increase production being adopted, the density and viscosity of the crude oil as well as the polymer content have been increased, leading to increasing difficulty in crude oil dehydration and waste wa- ter treatment.

The reconstruction of crude oil dehydration unit in Shanshan oil field is outlined.

The effect of a variety of experimental parameter has been examined with respect to the performance of membrane bed for removing water from fuel.

This increases the equipment working load,consumes much more chemical dehydrite,and increases crude dehydration material cost.

Studies the effects of the magnetic treatment on dehydration of crude oil,wax avoid ance and viscosity reduction,and purification of waste water and avoidance of scale formation.

Technology rebuilding of the oilcan dehydration in refinery;