Pretreatment method for oily sludge on horizontal screw filter pressing type offshore platform

Abstract

The invention discloses a pretreatment method for oily sludge on a horizontal screw filter pressing type offshore platform. The method includes respectively injecting a medicament A and a medicament Binto a medicament A storage tank and a medicament B storage tank, stirring and mixing, injecting a medicament dose into a pipeline mixer A and a pipeline mixer B according to a certain proportion, and fully mixing and injecting the medicament into a medicament mixing reactor; injecting oily sludge into the medicament mixing reactor through a feed pump, and crushing part of oily particles by the feed pump; fully mixing and reacting the injected medicament and the oily sludge in the medicament mixing reactor; conveying a supernatant fluid in the medicament mix reactor to an air float on the offshore platform to preform production water treatment; further pressing and concentrating sludge generated by sedimentation and flocculation in the medicament mixing reactor, and conveying the sludge to a pressure filter for press filtration and dehydration after preliminary pressing and concentration treatment by a sedimentation sludge screw conveyor; and conveying the pressed filtrate back to themedicament mixing reactor, and releasing a filter cake in a filter cake storage tank and outputting the cake through a filter cake outlet.

Description

technical field [0001] The invention relates to the field of offshore oily sludge treatment, and more specifically relates to a horizontal screw pressure filter type offshore platform oily sludge pretreatment method. Background technique [0002] The horizontal screw filter press sludge treatment and concentration system is to use the new horizontal screw filter press to optimize and upgrade the new generation equipment to centrifugally separate the oily sludge. The filtered sludge can achieve a moisture content of less than 80% in the wet sludge, which can greatly reduce the volume and floor space of the sludge, and provide a good pre-treatment for subsequent resource utilization. Moreover, there are generally problems in the sludge dewatering process such as high moisture content of sludge, high energy consumption, and difficult treatment of filtrate. Therefore, it is necessary to conduct research on sludge dewatering performance, sludge deep dewatering agent and process,...

AI Technical Summary

Problems solved by technology

Moreover, the current sludge dewatering process generally has problems such as high sludge moisture content, high energy consumption, and difficult treatment of filtrate.

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