What are the applications of coalescers in the environmental protection industry
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Release date： 2026-05-07
Information summary：The coalescer is a core separation equipment in the field of environmental protection that is efficient, purely physical, and has zero chemicals. It is used in four major scenarios: deep treatment of oily wastewater, exhaust gas purification, industrial medium recovery, and emergency water treatment. It can separate emulsified oil/trace droplets to ≤ 5ppm, achieve standard emissions, resource reus
The coalescer is a core separation equipment in the field of environmental protection that is efficient, purely physical, and has zero chemicals. It is used in four major scenarios: deep treatment of oily wastewater, exhaust gas purification, industrial medium recovery, and emergency water treatment. It can separate emulsified oil/trace droplets to ≤ 5ppm, achieve standard emissions, resource reuse, and secondary pollution prevention and control, and meet the requirements of the "dual carbon" and "blue water" policies.
1、 Advanced treatment of oily industrial wastewater (core scenario)
1. Petrochemical/refining oily wastewater
Processing objects: Electric desalination wastewater, condensate water, and comprehensive oily wastewater in the factory area (including emulsified oil, floating oil, SS).
Core requirements: Inlet oil content is 500-5000ppm, outlet stability is ≤ 5ppm, meeting the first level standard of the Comprehensive Wastewater Discharge Standard (GB 8978-1996).
Process combination: coalescer+air flotation+biochemistry, replacing the traditional "dosing demulsification+settling" method, with zero chemicals, no sludge increment, and a 70% reduction in land occupation.
2. Mechanical processing/steel wastewater
Processing objects: cutting fluid, rolling fluid, cooling circulating water (including mineral oil, emulsion, heavy metals).
Core value: Emulsified oil demulsification and separation, oil recovery rate ≥ 90%, reused in production; Reuse or discharge wastewater with a concentration of ≤ 5ppm, reducing hazardous waste disposal by over 60%.
3. Oilfield produced water/offshore platform
Processing objects: oilfield produced water, platform engine room water, ballast water (including crude oil, emulsified oil, salts).
Core requirement: Export oil content ≤ 10ppm, meet the reinjection standard (SY/T 5329-2012), and avoid formation blockage; Marine emissions comply with the MARPOL convention of ≤ 15ppm.
4. Port/ship oily wastewater
Processing objects: bilge water, oil tanker washing water, and oily wastewater from the dock.
Core value: Replacing traditional gravity tanks, occupying 1/10 of the land, increasing processing efficiency by 3 times, eliminating secondary pollution of chemicals, and meeting port environmental acceptance requirements.
2、 Exhaust gas purification and VOCs treatment (gas-liquid coalescence)
1. Industrial exhaust gas dehazing/degreasing
Scenario: Chemical, pharmaceutical, coating, printing exhaust gas (including oil mist, water mist, VOCs droplets).
Function: Agglomerates and removes fine droplets of 0.1-10 μ m, with an outlet mist content of ≤ 10mg/m ³, protecting the backend activated carbon/catalytic combustion equipment and extending its lifespan by 2-3 times.
2. Natural gas/biogas purification
Processing objects: natural gas condensate, coalbed methane moisture, biogas condensate.
Core value: Remove moisture to ≤ 50ppm, increase calorific value, prevent pipeline corrosion and ice blockage; Recycling condensate oil can increase annual income by hundreds of thousands of yuan.
3、 Industrial medium recycling and reuse (pollution reduction and carbon reduction)
1. Organic solvent recovery (chemical/pharmaceutical)
Media: Water containing emulsion solvents such as benzene, toluene, xylene, and ethyl acetate.
Effect: Dehydrate to ≤ 100ppm, purity ≥ 99.9%, and reuse directly; Reduce the purchase of new solvents by 30% -50% and lower hazardous waste emissions.
2. Waste oil regeneration (mechanical/electrical)
Media: waste lubricating oil, hydraulic oil, transformer oil (containing water and impurities).
Process: Agglomeration dehydration+precision filtration, reducing moisture to ≤ 50ppm, restoring lubrication/insulation performance, regeneration rate ≥ 80%, reducing hazardous waste disposal.
3. Reuse of condensate water in power plants
Processing object: Steam condensate (including turbine oil and rust).
Value: Remove oil to ≤ 1ppm, reuse for boiler feedwater, save softened water, reduce energy consumption, in line with the "Water and Steam Quality Standards for Thermal Power Plants".
4、 Water emergency and ecological governance (environmental risk prevention and control)
1. Emergency oil leakage control
Scenario: Emergency response to crude oil/diesel spills in rivers, lakes, and sea areas.
Function: Quickly aggregate and recover floating oil and emulsified oil, prevent diffusion, and reduce ecological damage; The oil content in the treated water is ≤ 5ppm, reducing environmental risks.
2. Strengthen the treatment of black and odorous water bodies
Auxiliary process: After the treatment of black and odorous water bodies, oil removal is carried out to remove surface floating oil and emulsified oil, improve water sensory perception, enhance dissolved oxygen, and help meet water quality standards (Class V/IV).
5、 Core advantages of environmental protection industry applications
Pure physical separation, zero secondary pollution: no need for demulsifiers/flocculants, no chemical sludge, hazardous waste reduction of over 50%.
High precision separation, stable compliance: emulsified oil is separated to ≤ 5ppm, meeting the strictest emission standards and avoiding environmental penalties.
Resource recycling, cost reduction and efficiency improvement: Oil/solvent recovery rate ≥ 90%, direct reuse, annual income increase/cost savings of hundreds of thousands to millions.
Compact and efficient, low energy consumption: occupying 1/5-1/10 of the space of a gravity tank, reducing energy consumption by 60%, and having low operation and maintenance costs.
Strong adaptability and long lifespan: processing concentration of 10-5000ppm, acid and alkali/salt spray resistance, core filter lifespan of 6-12 months.
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