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If the sludge discharged from oilfield sludge treatment is directly discharged without treatment, it will not only occupy a large amount of land, but also contain a large amount of heavy metals and bacteria, which will produce stench and cause serious pollution of water, soil, and atmosphere. The hi

If the sludge discharged from oilfield sludge treatment is directly discharged without treatment, it will not only occupy a large amount of land, but also contain a large amount of heavy metals and bacteria, which will produce stench and cause serious pollution of water, soil, and atmosphere. The historical storage volume of oil sludge resources is huge, and the annual output is increasing. Domestic and foreign companies have also carried out a lot of technical research on the treatment and disposal of oily sludge, but so far, mature, economical, thorough and universally applicable treatment technology has not yet been formed.

At present, there are many treatment technologies for oily sludge. According to the requirements of reduction, harmlessness, resource utilization and comprehensive utilization, the relevant treatment methods are summarized as follows: solvent extraction technology, chemical hot washing treatment technology, chemical hot washing treatment Technology, pyrolysis treatment technology, etc. This article focuses on the chemical thermal washing treatment technology of oil sludge.

Desen's oil sludge chemical hot washing treatment technology dilutes the oily sludge with water and then heats it. At the same time, a certain amount of chemical reagents are added to wash the paint repeatedly to desorb or aggregate the oil from the solid surface. The chemical hot washing treatment system includes sludge pretreatment, mixing, transport, dosing, primary cleaning, secondary cleaning, separation and water treatment and other structural units. The selection and use of chemical reagents is the key to the chemical hot washing process.

The sludge hot washing and grading treatment system equipment developed by Desen Environment is an advanced sludge treatment technology. The system uses thermal washing technology to effectively separate oil and solid particles from sludge, thereby reducing the volume and hazards of the waste. The core advantages of the system include:

High-efficiency sludge treatment: Through the action of high temperature and chemical agents, the oil and solids in the sludge can be quickly separated, greatly improving the treatment efficiency.

Environmental protection: The wastewater and exhaust gas generated during the treatment process will undergo strict purification and comply with environmental protection emission standards.

Resource recovery: The oil recovered from the sludge can be reused to achieve resource recycling.

Safety: The system is easy to operate, safe and reliable, and reduces safety risks during operation.

The state has already included sewage sludge in the "hazardous waste list" and clearly stipulates that a sewage discharge fee of 1,000 yuan/ton must be paid for disposal in landfill. The promulgation of the new Environmental Protection Law in 2015 has put forward higher requirements for the disposal of sewage sludge and related units. Therefore, whether from the perspective of environmental protection, maintenance of normal production, or energy recovery, oily sludge must be reduced, resourced, and harmlessly treated.

Due to space limitations, this article cannot elaborate on every point. In practical applications, Desen's technology and equipment will be adjusted and optimized according to specific conditions to achieve the best processing results.