Massive, harmless and recycling treatment of oily sludge

Abstract

The invention relates to the technical field of oily sludge, and relates to a massive, harmless and recycling treatment of oily sludge. The method comprises the following steps: mixing the oily sludge, water and plant extract, performing crushing, stirring and aeration under a magnetic field, oscillating the obtained mixture by a high-frequency vibrating screen, settling the oscillated mixture, adding water and the plant extract to obtain the obtained primary solid state layer, performing crushing, stirring and aeration under the magnetic field, oscillating the obtained mixture by the high-frequency vibrating screen, mixing the obtained secondary solid layer with primary screenings, and performing aerobic and anaerobic fermentation treatment to obtain treated oily sludge with the oil content of 0.3% or less. Compared with existing sludge treatment technologies, the method in the invention has the advantages of low investment cost, large daily treatment capacity, low treatment cost, high efficiency, meeting of environmentally-friendly and pollution-free treatment requirements, and good application prospect.

Description

technical field

[0001] The invention relates to the technical field of oily sludge, and relates to a large-scale, harmless and resourceful treatment method for oily sludge. Background technique

[0002] Oily sludge refers to the soil mixed with oil. Oil and water are immiscible. When oil is mixed with water, it will float on the water surface, but if oil is mixed with soil, it will mix together, forming an extremely difficult to handle sludge. of what we call "oily sludge". Oilfields will produce a certain amount of oily sludge in the process of oil and gas production, which mainly comes from two aspects: one is that the crude oil extracted from the oilfield is carried from the formation to the ground, or various containers, large tanks, and recycled sewage for refining and storage The siltation of ground facilities such as process containers and the sludge that is regularly cleaned; the second is the oil-contaminated soil caused by outdated equipment, improper operation, d...