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Oil & Water Filtration, Purification Equipment & Treatment Chemicals: An Integrated Approach to Process Efficiency
Created on 08.26
Introduction: Why Equipment and Chemicals Must Work Together
Oil and water treatment is rarely a single-step process. Whether the goal is decolorizing dark diesel, separating emulsified water from crude oil, purifying frying oil, or treating produced water for reinjection, achieving a clean, compliant end product requires two things working in harmony: effective mechanical separation and targeted chemical treatment.
Equipment alone cannot break a stable emulsion. Chemicals alone cannot remove suspended solids or free oil. The synergy between the two determines the efficiency, cost, and reliability of the entire treatment process.
The global oil and water separation equipment market reached approximately USD 12.78 billion in 2025, growing at 11.3% year-over-year, with China contributing roughly 32.6% of global demand. The produced water treatment market alone is valued at USD 7.52 billion in 2025, projected to reach USD 8.06 billion in 2026 at a CAGR of 7.1%. Meanwhile, the oil purification chemicals market for refining processes was estimated at USD 65.14 billion in 2025, with a projected CAGR of 6.27% through 2034.
These figures confirm what operators already know: oil and water treatment is a growing, regulation-driven necessity. But the market is also shifting toward integrated solutions — where equipment and chemicals are selected and supplied together, rather than sourced independently and hoped to work in harmony.
The Integrated Approach: Equipment + Chemicals = Measurable Results
An integrated approach means treating the entire process — from raw influent to final effluent or product oil — as a single system. Here is how equipment and chemicals interact across common treatment challenges:
Treatment Challenge | Mechanical Equipment Role | Chemical Role |
Emulsified water in crude oil | Gravity separators, coalescers, centrifuges | Demulsifiers to break interfacial films |
Dark diesel decolorization | Filter tanks, multi-stage filtration units | Silica gel sand for pigment adsorption |
Produced water treatment | Tank-in-tank systems, CPI, DAF, fine separators | Reverse demulsifiers, corrosion inhibitors, biocides, scale inhibitors |
Frying oil purification | Pre-filters, four-phase separators, decolorization units | Food-grade purification agents |
Waste oil regeneration | Vacuum purifiers, distillation systems, centrifuges | Silica gel sand, filter aids |
When equipment and chemicals are designed to work together, the results are measurable: higher separation efficiency, lower chemical consumption, reduced downtime, and longer equipment life.
Part I: Oil Purification Equipment Portfolio
1. Filtration & Separation Systems
Our equipment range covers the full spectrum of oil purification, from simple filtration to advanced multi-stage separation:
Filter Tanks
Cylindrical vessels designed to hold silica gel sand as the filtration medium. Available in diameters from 800 mm to 1,200 mm, with single-tank and twin-tank configurations. Explosion-proof motors and centrifugal pumps ensure safe operation for flammable oils. Twin-tank systems allow continuous operation — one tank in service while the other is on standby.
Skid-Mounted Filtration Units
Compact, transportable units designed for oilfield fluid, water injection, and brine filtration. Built with SS304 stainless steel tanks and hydrophilic oleophobic nano-material filter elements, these units remove oil droplets, particles, and suspended solids in a single pass. The twin-tank design (one operating, one standby) ensures uninterrupted filtration without process downtime.
Vacuum Oil Purifiers
Designed for rapid removal of water, gases, and volatile substances from lubricating oil, hydraulic oil, and transformer oil. The explosion-proof vacuum oil purifier market reached USD 576 million in 2025, projected to grow to USD 909 million by 2032 at a CAGR of 7.1%, reflecting the growing demand for efficient oil regeneration technology.
Automatic Slag-Discharging Centrifuges
Continuous separation of solids from liquids without manual cleaning. These centrifuges enable uninterrupted operation, consistent separation efficiency, and reduced labor requirements — critical for high-throughput industrial oil processing.
2. Complete Filtration & Purification Systems
Beyond individual units, we supply turnkey filtration and purification systems that integrate multiple treatment stages into a single coordinated package:
- Pre-treatment & coarse filtration
— removes large particles and debris
- Chemical treatment & reaction
— food-grade agents neutralize acids and peroxides
- Decolorization & fine filtration
— multi-cycle units achieve filtration down to 5 microns
- Final polishing
— returns purified oil to specification
For edible oil applications, our complete refining solutions cover degumming, deacidification, decolorization, and deodorization. For industrial oil, our systems handle diesel decolorization, hydraulic oil purification, and base oil recovery.
Part II: Water Treatment Equipment Portfolio
1. Physical Separation Technologies
Produced water — the water brought to the surface along with crude oil — is one of the largest byproduct streams in the oil and gas industry. The U.S. alone generates over 24 billion barrels of produced water annually. Effective treatment requires a combination of physical and chemical technologies.
Tank-in-Tank Integrated Systems
The Tank-in-Tank design integrates wastewater regulation, homogenization, and oil removal into a single vessel. Produced water enters a multi-tube hydraulic cyclone separator inside the tank, where centrifugal force separates oil, water, and sludge into three phases. An automatic oil skimming device transfers separated oil to an external collection tank. The compact footprint makes it suitable for space-constrained onshore and offshore installations.
Corrugated Plate Interceptors (CPI)
CPI units use inclined parallel plates to enhance gravity separation of free oil and suspended solids. The plate configuration increases the effective settling area within a compact footprint, improving oil removal efficiency without chemicals.
Dissolved Air Flotation (DAF) Units
DAF systems introduce microscopic air bubbles that attach to oil droplets and suspended particles, causing them to float to the surface for removal. DAF is particularly effective for removing emulsified oil and fine suspended solids that cannot be separated by gravity alone.
ZJYS Fine Oil-Water Separators
Designed specifically for emulsified oil droplets smaller than 10 μm, the ZJYS series integrates cyclone separation, coalescence, and demulsification in a purely physical device. Using demulsification coalescence materials to destabilize emulsions, the system achieves effluent oil content ≤20 mg/L, meeting stringent discharge and reinjection standards.
Micro-Bubble Cyclone Oil Removers
Combining micro-bubble generation with cyclone separation, these units achieve high-efficiency oil removal by attaching micro-bubbles to oil droplets and using centrifugal force to accelerate separation.
2. Modular & Skid-Based Systems
The market trend toward modular, skid-based treatment systems reflects the operational reality of modern oilfields: treatment needs change as fields mature, and equipment must be deployable across multiple locations. Our skid-mounted systems are designed for rapid deployment, easy relocation, and plug-and-play installation.
Key features of modular systems:
- Rapid deployment across well pads
- Digital monitoring for oil-in-water and particle counts
- Automated chemical dosing integration
- Hybrid treatment trains that reduce chemical intensity and footprint
Part III: Chemical Treatment Portfolio
Equipment handles the physical separation. Chemicals handle the chemistry. Our chemical portfolio is designed to complement our equipment at every treatment stage.
1. Oil Treatment Chemicals
Silica Gel Sand
A white, non-toxic oil bleaching agent that selectively adsorbs pigments, asphaltenes, and resin compounds from dark diesel, hydraulic oil, base oil, and waste oil. With decoloring rate ≥98% and SiO₂ content ≥98%, silica gel sand transforms blackened oil into a light, transparent liquid. Used in filter tanks and multi-stage filtration systems.
Demulsifiers (Oilfield)
Four main types — polyamine, polyols, phenolic resin, and sulfonates — designed to break water-in-oil emulsions. Polyamine demulsifiers suit waxy, high water-cut crude at low temperatures. Polyols are hydrophilic with good compound effects for refinery desalting. Phenolic resin offers wide applicability and low-temperature performance. Sulfonates work in combination with other demulsifiers for challenging emulsions.
H₂S Scavengers
Triazine-based and amine-based scavengers that remove hydrogen sulfide from oil, gas, and water streams through irreversible chemical reaction. Desulfurization rate ≥90%, with triazine concentrations customizable from 40% to 78% to meet specific oilfield conditions.
Filter Material Cleaning Agents
Anionic alkaline cleaners that effectively remove oil and dirt from filter media surfaces, restoring filtering performance and extending service life. Cleaning capacity ≥90% at 40°C, with corrosion rate ≤0.65 g/(m²·h).
2. Water Treatment Chemicals
Corrosion Inhibitors
Imidazoline-based and organic amine formulations that form a protective film on metal surfaces, preventing pipeline corrosion and equipment damage. Corrosion inhibition ≥75% at 30 mg/L dosing. Suitable for carbon steel, alloy steel, aluminum, and aluminum alloys. No pitting corrosion tendency.
Biocides
Quaternary ammonium salt 1227, glutaraldehyde, and THPS formulations that control sulfate-reducing bacteria (SRB) and other microbial activity. SRB inhibition concentration as low as ≤50 mg/L for some grades. Organochlorine content: 0%.
Scale Inhibitors
Organic phosphine carboxylic acid formulations that prevent Ca²⁺, Mg²⁺, Sr²⁺, and Ba²⁺ scale formation through chelation and threshold inhibition. Scale inhibition rate ≥80% at 10 mg/L. Non-toxic and pollution-free, with good chemical stability and temperature resistance.
Scale Removers
Chelating-type formulations that dissolve existing scale deposits from oil wells, pipelines, and surface equipment. Suitable for scale composed primarily of Mg²⁺, Ca²⁺, Sr²⁺, and Ba²⁺.
Water Clarifiers (Deoilers)
Reverse-phase demulsifiers that separate oil from produced water and polymer-containing wastewater. Effectively purify sewage and improve oil recovery. Degreasing rate meets on-site requirements.
Part IV: How Equipment and Chemicals Work Together
The integrated approach is not simply about supplying both equipment and chemicals. It is about designing them to work together as a system.
Treatment Stage | Equipment | Chemical | Synergy |
Primary oil-water separation | Tank-in-Tank, CPI | Demulsifier | Equipment provides residence time and separation surface; chemical breaks emulsion for faster coalescence |
Fine oil removal | ZJYS separator, DAF | Reverse demulsifier (Water Clarifier) | Equipment captures fine droplets; chemical destabilizes remaining emulsion |
Water quality stabilization | — | Corrosion inhibitor, Biocide, Scale inhibitor | Chemicals protect equipment downstream and maintain water quality |
Oil decolorization | Filter tank, Filtration unit | Silica gel sand | Equipment contains the adsorbent; chemical removes pigments and impurities |
Waste oil regeneration | Vacuum purifier, Centrifuge | Silica gel sand, Filter aids | Equipment removes water and volatiles; chemical removes color bodies and fine particles |
Filter maintenance | — | Filter material cleaning agent | Chemical restores filter performance, extending equipment service life |
Example: Produced Water Treatment Train
- Primary separation:
Produced water enters a Tank-in-Tank or CPI unit. Demulsifier is dosed at the inlet to break emulsions and accelerate oil droplet coalescence.
- Fine separation:
Effluent from primary treatment enters a ZJYS fine separator. Reverse demulsifier is dosed to destabilize remaining emulsified oil below 10 μm.
- Water conditioning:
Corrosion inhibitor, biocide, and scale inhibitor are dosed into the treated water stream to protect downstream injection wells and equipment.
- Filter maintenance:
Filter material cleaning agent is periodically circulated through filter beds to restore performance.
Part V: Applications and Industries Served
Industry | Application | Equipment | Chemicals |
Oilfield | Produced water treatment, reinjection | Tank-in-Tank, CPI, ZJYS, DAF | Demulsifier, Reverse demulsifier, Corrosion inhibitor, Biocide, Scale inhibitor |
Refinery | Crude desalting, oil purification | Skid-mounted filtration, Vacuum purifier | Demulsifier, Silica gel sand |
Waste Oil Recycling | Diesel decolorization, base oil recovery | Filter tank, Vacuum purifier, Centrifuge | Silica gel sand, Filter material cleaner |
Food Processing | Frying oil purification | Pre-filter, Four-phase separator, Decolorization unit | Food-grade purification agents |
Edible Oil Refining | Vegetable oil processing | Complete refining systems | Silica gel sand |
Power Industry | Transformer oil purification | Explosion-proof vacuum purifier | — |
Petrochemical | Wastewater treatment, oil recovery | Micro-bubble cyclone, DAF | H₂S scavenger, Water clarifier |
Coal Chemical | Coal chemical wastewater | CPI, Corrugated plate components | Scale inhibitor, Corrosion inhibitor |
Part VI: Market Trends Driving Integration
1. Shift Toward Outcome-Based Solutions
The produced water treatment market is moving toward outcome-based commercial models, where suppliers are evaluated not just on equipment specifications or chemical prices, but on the actual quality of treated water and the total cost of ownership. This favors suppliers who can offer both equipment and chemicals under a single performance guarantee.
2. Digital Monitoring and Automated Dosing
Artificial intelligence and digital monitoring are transforming produced water treatment by improving chemical dosing accuracy, membrane performance, energy optimization, and asset reliability. Automated chemical dosing systems that respond to real-time water quality data reduce chemical waste and improve treatment consistency.
3. Regulatory Pressure and Water Reuse
Stricter environmental discharge regulations and growing water scarcity are driving the shift toward reuse, recycling, and reinjection of produced water. Operators increasingly prioritize on-pad recycling and regional reuse networks to reduce freshwater draw and trucking costs. Integrated treatment systems that combine equipment and chemicals are essential for meeting these reuse standards.
4. Modular and Mobile Treatment
The trend toward modular, skid-based, and mobile treatment systems reflects the need for rapid deployment across multiple well pads and changing production profiles. These systems are designed for plug-and-play installation and easy relocation, with integrated chemical dosing skids for immediate operation.
Why Choose Jusen Chem?
- Integrated supply:
Equipment and chemicals from a single source, designed to work together
- Complete portfolio:
Filtration units, separators, purifiers, demulsifiers, silica gel sand, corrosion inhibitors, biocides, scale inhibitors
- Technical coordination:
Our team can help configure the optimal equipment-chemical combination for your specific application
- Proven performance:
Products supplied to major oilfields and industrial customers worldwide
- Customizable solutions:
Equipment capacity, materials of construction, and chemical formulations tailored to your process
- Factory-direct pricing:
Competitive rates on both equipment and chemicals
- Global logistics:
Efficient shipping from major Chinese ports
- Technical support:
From product selection to system integration and troubleshooting
FAQ
Q1: Why should I buy equipment and chemicals from the same supplier?
Buying from a single supplier ensures that equipment and chemicals are designed to work together. It reduces integration risk, simplifies logistics, and provides a single point of accountability for treatment performance.
Q2: What is the advantage of silica gel sand over other decolorization methods?
Silica gel sand offers a decoloring rate of ≥98% with SiO₂ content ≥98%. It requires no heating, acid washing, or alkali washing, produces less waste residue than activated clay, and can be reused 2–3 times depending on the application.
Q3: How does the ZJYS fine oil-water separator achieve ≤20 mg/L effluent oil content?
The ZJYS series integrates cyclone separation, coalescence, and demulsification in a purely physical device. Demulsification coalescence materials destabilize emulsions smaller than 10 μm, causing oil droplets to merge and separate by gravity.
Q4: What is the recommended dosage for your demulsifier?
The recommended dosing concentration is 30–100 mg/L for oilfield dehydration, depending on crude oil type and water content. Specific dosage should be determined through laboratory and field testing.
Q5: Can the equipment be customized for my specific application?
Yes. Equipment capacity, materials of construction, control systems, and configuration can be customized. Chemical formulations can also be tailored to your specific oil or water characteristics.
Q6: What is the lead time for equipment?
Standard equipment typically ships in 15–30 days. Custom configurations may require longer. Please contact us for specific timelines.
Q7: Do you provide technical support for system integration?
Yes. Our team can help configure the optimal equipment-chemical combination, recommend dosing rates, and provide troubleshooting support for your treatment system.
Q8: Can you provide samples for chemical products?
Yes. Samples of silica gel sand, demulsifiers, corrosion inhibitors, biocides, and other chemicals can be provided for evaluation. Please contact us with your specific requirements.
Contact Us
For quotations, technical data sheets, or system configuration assistance:
📧 Email: info@jusenchem.com
📞 WhatsApp: +86 18954690080
🌐 Website: www.jusenchem.com
Jusen Chem — integrated oil & water treatment solutions. Equipment and chemicals, coordinated for your process.
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