Waste Oil Environmental Reclamation
The customer is a professional enterprise located in the Southwest region engaged in industrial waste oil environmental treatment and reclamation. With the expansion of regional industrial scale, the plant undertakes the task of treating waste lubricants generated by machining, automobile manufacturing, and other industries.
During waste lubricant recovery and treatment, the customer faces complex media challenges:
Complex contaminant composition: Waste oil contains metal dust, wear particles, oxidized resins, and gums (sludge) generated from long-term high-temperature operation, which directly entering the reclamation process would cause frequent blockage of centrifuges or distillation towers.
Downstream consumable loss: If pre-filtration precision is insufficient, fine particles will enter subsequent chemical catalytic or precision filtration stages, causing catalyst poisoning or precision filter media failure, driving costs up.
Environmental discharge pressure: Environmental process requirements mandate reduced-volume treatment of separated impurities. Traditional treatment methods generate "sludge" with high oil content, resulting in high disposal costs.
High-viscosity operation challenge: Lubricant viscosity varies greatly with temperature and waste oil has poor flowability, requiring filtration equipment to maintain 30m³/h flow rate while possessing pressure resistance and self-cleaning or easy-maintenance properties.
A 30m³/h waste oil dedicated purification unit was custom-designed for this environmental project:
Multi-stage solid-phase separation: For metal debris and hard particles in waste oil, a reinforced multi-stage interception architecture (10–25 μm) is employed, capable of continuous operation under high fouling loads.
Sludge volume reduction: The physical separation logic effectively concentrates impurities in the sludge, improving waste oil purity and reducing downstream process burden. The concentrated sludge is classified as hazardous waste (HW08 category) and requires compliant collection and disposal.
Anti-corrosion and wear-resistant design: Considering that waste oil may have acidic properties or contain chemical additives, internal contact components undergo anti-corrosion and wear-resistant treatment, with contact parts made of 316L stainless steel.
Process integration: The system features automatic pressure compensation, maintaining a constant 30m³/h treatment flow rate even during media viscosity fluctuations; equipped with differential pressure alarm and automatic backwash functions.
The 30m³/h purification unit became the core of the customer's pre-treatment line, effectively handling challenging industrial lubricants and providing the clean baseline required for the reclamation refining process. Front-end physical purification significantly improved the initial quality of reclaimed lubricant, and the resource recovery rate improved. According to customer feedback, the maintenance cycle of subsequent distillation towers was effectively extended, and the process met environmental compliance requirements.
In waste oil recovery, every additional micron of contamination removed in the early stage saves significant expenses later. This 30m³/h system has become the core equipment of our pre-treatment line. It can handle relatively challenging industrial lubricants, providing the clean baseline our reclamation refining process requires. This is a win-win for our business and the environment.