1results about How to "Does not involve high temperature and pressure" patented technology

This invention discloses a biological treatment method and apparatus for oily sludge, relating to the field of oil and gas field development. It is achieved through the following steps: Hot water A is added to oily sludge A, and the mixture is stirred to facilitate sludge flow and remove impurities and large-particle sand from the sludge; the resulting oil-sludge-water mixture is added to flotation water B, stirred, and then the surface crude oil components are collected using a flotation device. This process is repeated 12-18 times, and the wastewater is discharged, with sludge slurry B reserved for later use; sludge slurry B is then injected into flotation water C, heated, and saturated with aeration. Flotation is performed every 8-12 hours, collecting the upper layer of crude oil components, discharging the middle wastewater, and leaving sludge C at the bottom; the oily sludge treatment is completed in 5-7 days. The composite biological agent system used in this invention is non-toxic, non-corrosive, biodegradable, and does not produce secondary pollution, making it environmentally friendly. Its treatment conditions are mild, do not involve high temperature or high pressure, are safer, and have a shorter treatment cycle and higher efficiency.