A new flocculant named polymerized silicon-phosphorus ferric sulfate was developed in lab to treat high-viscosity petrochemical wastewater in a plant of Liaohe Pertrochemical Corporation.

Synthesis of invert-demulsifying agent for dealing with the heavy oil wastewater;

Application of modified fiber ball in reuse of heavy oil wastewater as boiler water;

It introduces the technique of biological membrane hydrolytic acidification-biological membrane contact oxidation to process the heavy oil wastewater from some oil-fields(oil density 0.

Application of complex calcium-based desilication agent in the treatment of dense oil polluted water;

he experiments of coagulation screening with the dense oil polluted water from the Nanyang Oil Field were done.

The dense oil polluted water was purified by using demulisifier and coagulant, the effect of the concentration of the medicament and the mining ratio of demulsifier and coagulant on purification were studied, and the mechanism inquired into the results showed that, after treating, the effluent water reached the SY532988 standards of the Energy Minstry.

This article analyses the operational conditions of the viscous oil sewage biological treatment unit of the Henan oilfield.

Microbe can exist in viscous oil sewage by cultivating-screening-domesticating,it has superior biodegradation of inoganics in sewage.

Softening of thick oil wastewater by ion exchange technique:Ⅱ the test run of macroporous weak acidic resin-packed moving bed industrial installation;

Laboratory test and middle scale test on softening of thick oil wastewater by fixed bed with strong acidic sodium type ion exchange resin and packed moving bed with macroporous weak acidic (sodium) type ion exchange resin were carried out.