The problem of oil sludge contamination in soil is serious, so soil washing technology is worth a try!
土壤淋洗修复技术与萃取技术存在不同的净化原理，主要是通过界面让污染物质从土壤中分离。由于表面活性剂同时具备亲水和亲油的基团，因此能够稳定地存在于油水界面，当其浓度低于或高于临界溶胶浓度时，就有较强的净化效率。土壤淋洗技术具备较好的应用前景，因为淋洗剂中所含表面活性剂的浓度较低，因此较好地避免了二次污
Soil washing and remediation technology and extraction technology have different purification principles, mainly through the interface to separate pollutants from the soil. Since surfactants have both hydrophilic and lipophilic groups, they can stably exist at the oil-water interface. When their concentration is lower than or higher than the critical sol concentration, they have a strong purification efficiency.
Soil washing technology has a good application prospect, because the concentration of surfactants contained in the eluent is low, so the problem of secondary pollution is better avoided. However, due to the high price of the eluent itself, it is weak in terms of economic efficiency. How to break through the limitation of the price cost of the eluent has become the future research direction of land washing technology.
After years of research and practice, Desen Environment has finally developed an integrated soil washing equipment, which can be used for washing and remediation of chemical smelters, organic pollution sites, gas station sites, heavy metals and other polluted sites. Desen soil washing equipment uses a series of physical and chemical comprehensive treatment processes to clean and repair contaminated soil, and transfers heavy metals attached to the surface of soil particles from low-concentration solid pollutants to liquid phase for subsequent centralized treatment. The sand and gravel aggregates in the soil can be recycled after washing and grading. After the washing mud is dehydrated, if the mud solids meet the inspection standards, they can be safely backfilled or enter the thermal desorption remediation system for further treatment. The waste liquid after dehydration enters the water treatment system for centralized treatment. The whole set of washing and remediation equipment can achieve the maximum reduction of contaminated soil.
Among them, the DS soil washing and selection module is a device developed for dehydration, de-intermediation and desludging of slurry materials. The machine is used for soil washing and remediation operations, which can effectively recover fine sand in the soil and reduce the amount of mud. The washing and selection module is also called fine sand extractor, silt separator, and mud separator. It is a key equipment for the graded treatment of sand and water slurry mixture.
The severity of the problem of remediation and treatment of oil sludge contaminated soil makes it imperative for us to study the matching of appropriate treatment technologies for different applicable conditions. However, the treatment of oil leakage pollution itself is a comprehensive treatment mechanism across multiple disciplines. Whether it is physics, chemistry, biology, geology, environmental engineering and other fields, progress may bring qualitative changes to oil leakage pollution technology.
