Oily Sludge Disposal And Resource Reuse Technology Research

Sludge which is discharged from the process of oil crude production or from the bottom of wastewater treatment constructional work has rather high water ratio and is too sufficiently emulsified to be freely settled. It can not only get the environment polluted, but also might be a waste of crude oil resource if the sludge is discharged directly without any disposal.On the basis of character and compositional features of oily sludge analyzed in this thesis and by loading my pages with references of the related fields, together with the comprehension and expatiation of the technological process in petrochemical industry, preliminary study has been conducted and summarized in this thesis involved with the transference and transformation of oily pollutant.In addition, concerning various ways of treatment methods in oily sludge disposal, advantages or disadvantages of each technology and economic feasibility, there have been some categorized summaries made in this thesis, as a result, it could be deeper and better for us to understand about the internal mechanism in the disposal of oily sludge.According to all the theories discussed above, a series of experimental studies has been made to reveal the relationship between the variety of coagulant agent, dosage and reaction temperature with the efficiency of flocculation, and at the same time, the optimal working parameters have been gotten . from the observation of experimental phenomena and the theoretic analysis of data gotten from the experiment, a bran-new technological process of harmlessly disposal of oily sludge has been achieved by simply heating and adding sulphuric acid in this colloid oily sludge system., which is easy to operate and needs little investment, above all, it is fairly effective.By using this newly invented technological process , satisfying effect has been accomplished by the autoptic experiment in xi'an petrochemical plant, this method provides good oil recovery of up to 98.5%, and achieved fairly good environmental benefit as well as economic benefit.