Shanghai Petrochemical Oil Sludge Drying Reduction Project Officially Started Construction
Recently, the oil sludge drying reduction project of the Ministry of Environmental Protection and Water Affairs of Shanghai Petrochemical officially started construction.
This project is one of the first projects carried out by Shanghai Petrochemical during this year's epidemic. After the completion of the project, the amount of oil sludge produced during the production and operation of Shanghai Petrochemical will be greatly reduced.
The construction of this project is to deal with the scum sludge, oily sewage tanks, sewage sludge, etc. of the oily sewage treatment equipment of the Ministry of Environmental Protection and Water Affairs. By dehydrating and drying the oil sludge, the purposes of oil sludge reduction, waste oil recovery, disposal cost reduction, and pollution discharge reduction are achieved.
The project content is to build a new set of sludge drying equipment with an output of 952 tons / year, including degreasing pretreatment (sludge conditioning, demulsification and deoiling, sludge water separation), centrifugal dehydration, sludge drying and other sections.
In the degreasing pretreatment stage, the sludge is demulsified and modified to realize sludge separation and sewage oil recovery. The sludge oil separated from the sludge separation device is sent to the front device for refining through the sludge oil pipe network, and the sludge oil recovery rate is greater than 90%.
In the centrifugal dehydration stage, the sewage removed by the centrifuge flows to the sewage pond for treatment, and the sludge is sent to the dryer for drying treatment.
In the sludge drying stage, the moisture content of the dryer is controlled to about 25%, and the resulting dried sludge is treated as a hazardous waste outsourcer. After drying, the reduction is about 97% compared with undehydrated sludge and about 80% compared with dehydrated sludge, which will greatly reduce the disposal pressure of Shanghai Petrochemical oil sludge, and will save about 10 million disposal costs each year.