| The oily sludge is solid, mud, state, and the slurry liquid state waste material produced ina series of activities, oil industry, mining, transportation, refining and processing oilywastewater process. Usually released into the environment, no longer has the original value inuse[1]. Petrochemical oily sludge is mainly divided into landing crude oil tank bottom sludge,sewage plant grease trap sediment, flotation pool scum, the existence of surplus activatedsludge, oily sludge is the current solid waste disposal a relatively large problems, seriousimpact on the surrounding environment, great harm to human health, it has become one of themajor pollutants of petrochemical industries[2].The contents of this article include the following two aspects, one laboratory study ofoily sludge washed separation First, the oily sludge test experimental apparatus set up, runand debug.In this paper, our laboratory developed several kinds of Gemini surfactants and othersurfactants (including anionic surfactant, cationic surfactant and non-ionic surfactants) of thesample cleaning cabin for the Dalian oil filter a variety of addition to oil, and ultimately pickout several good cleaning effect of surfactants further experiments. The use of orthogonalexperiment investigated the ratio of the experiment several Degreaser, to reach the bestdegreasing effect determine the composition of the best cleaning formulations. This articlealso uses the control variables investigated the impact of changes in conditions in addition tooil dosage, washing temperature, washing time, the pH of the solution and solid-liquid ratioon the washing efficiency, to sand after cleaning the residual oil rate indicators, and ultimatelydetermine cleaning the optimum conditions.Development and design of fixed intermittent oily sludge treatment plant, under thepremise to ensure that the process conditions are met, the results of laboratory studies, the oilysludge injection, homogeneous, and the second washing, crude oil recovery, treatment silttraps and The temperature control system, equipment selection, and automatic control of thefull consideration. To ensure the safety and environmental protection, does not producesecondary pollution, design of oil and water separation, processing light hydrocarbonrecovery process accessories, and make it together with the device as a whole, to do a certainamount of potential work to achieve commercialization of research results.Panjin oily sludge was treated using intermittent fixed oily sludge treatment plant, industrial test pilot, and received satisfactory results, accumulated a wealth of experience laidthe foundation for the industrialization and commercialization.(1) by screening a large number of surfactants, selected a good degreasing effect of A,B, and C, three kinds of surface active agents. These three kinds of surfactants using theorthogonal experimental method for complex, three kinds of reagents ratio is3:2:2cleaningeffect to achieve the best.(2) the use of the control variable method to determine the optimum conditions forcleaning: mixing temperature of90°C, stirring time1h, the solution pH=8, the solution ofsolid-liquid ratio1:4, surfactant dosage of1%. About1.92%residual oil rate in the sand aftercleaning under this condition can be achieved to meet the required discharge standards of theState Environmental Protection Department (HJ60T-2011), better to protect the environmentvariable hazardous solid waste into harmless compounds purpose.(3) design and development of oil sands separation of pilot test equipment, andconducted experiments for different sludge. Experimental better achieve the desired purpose,provides a valuable foundation of practice and practical experience for the next massproduction. |
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