SINOKLE High-Gravity Mass-Transfer Demulsification Separation Technology: Application and Evaluation
Against the backdrop of rapid industrial development, industrial wastewater is becoming increasingly complex. Oily wastewater and emulsion wastewater exist in a stable emulsified state, and problems such as difficulty in demulsification, hard oil-water separation and incomplete pollutant removal are prominent. Traditional demulsification and separation processes face challenges including low mass-transfer efficiency, insufficient demulsification, high chemical consumption and high operating costs.
The high-efficiency, purely physical demulsification and separation technology independently developed by SINOKLE - built on a core technology platform of cyclonic flow and high-frequency vibration combined with other core technologies such as ultra-fine nanobubble generation - demonstrates marked advantages in wastewater demulsification and separation thanks to its unique physical mechanism, and provides an efficient solution for advanced treatment of industrial oily and emulsified wastewater.
By establishing a synergistic effect of cyclonic shear and high-frequency vibration, this technology achieves breakthroughs in mass-transfer efficiency, demulsification and separation intensification, and process adaptability, effectively overcoming the technical bottlenecks of traditional demulsification and separation processes.
I. Core Technical Advantages: The Unique Characteristics of High-Gravity Mass-Transfer Demulsification
The high-gravity mass-transfer demulsification separation technology combines the synergistic effects of cyclonic flow, high-frequency vibration and a high-gravity field. Compared with traditional demulsification technologies, it offers significant physical advantages, laying the foundation for upgrading wastewater demulsification and separation processes:
1. Extremely strong mass-transfer intensification:
The high-gravity field generates centrifugal force dozens or even hundreds of times greater than gravity through high-speed rotation. Combined with the strong shear flow field created by cyclonic technology, it greatly reduces the size of dispersed-phase particles such as oil droplets and water droplets. High-frequency vibration further intensifies fluid turbulence, exponentially increasing the contact area between the oil and water phases. This fundamentally solves the core problem of low gas-liquid and liquid-liquid mass-transfer efficiency in traditional processes and provides ample interfacial reaction conditions for demulsification and separation.
2. Efficient demulsification and separation capability:
The centrifugal shear force generated by cyclonic flow rapidly breaks the electrical double layer of the emulsion and destabilises the oil-water dispersion system; high-frequency vibration accelerates the collision and coalescence of dispersed-phase particles, prompting fine oil droplets to merge quickly into larger ones; and the high-gravity field further strengthens the separation and migration of coalesced oil droplets, achieving rapid oil-water stratification. Demulsification and separation efficiency is significantly improved compared with traditional processes.
3. Wide process adaptability:
The technology achieves demulsification and separation through physical action and is unaffected by fluctuations in water quality parameters such as salinity, organic load and pH. It suits complex wastewater environments with high salinity and high organic load, and can also treat emulsion wastewater of different concentrations and types. Its process applicability far exceeds that of traditional technologies that rely on chemical agents or microorganisms.
4. Stable and reliable operating characteristics:
The purely physical mechanism avoids the introduction of chemical agents and produces no secondary pollution; there are no complex catalysts or easily worn parts inside the equipment, so it is little affected by water quality fluctuations. At the same time, the synergy of cyclonic flow and high-frequency vibration reduces scaling and fouling on the inner walls of the equipment, ensuring long-term stable operation and consistent, thorough treatment performance.
Site photo of a high-emulsification oily wastewater treatment project
II. Multidimensional Positive Effects on Wastewater Treatment Processes
1. Intensifying the separation of emulsified pollutants and improving treatment depth
For oily emulsified wastewater from industries such as petrochemicals, machining and metal cutting, the high-gravity mass-transfer demulsification separation technology strengthens treatment performance through a triple synergistic effect:
On the one hand, the combined action of the high-gravity field and cyclonic shear rapidly destabilises the emulsion, releasing and coalescing the fine oil droplets wrapped in the water phase;
On the other hand, high-frequency vibration accelerates the settling and separation of coalesced oil droplets, which together with the downstream oil-water separation unit achieves efficient removal of oil pollutants;
At the same time, the technology effectively separates suspended particles and recalcitrant organic pollutants from emulsified wastewater, avoiding the increased treatment difficulty caused by the accumulation of intermediates. Field applications have verified that the technology can achieve an oil removal rate of more than 99% and a suspended solids removal rate of more than 95% for oily emulsified wastewater, with effluent quality meeting the influent requirements of subsequent advanced treatment.
2. Suiting high-salinity and high-load water quality and expanding process adaptability
The high-salinity environment in industrial wastewater (for example, oil production wastewater with TDS of more than 58,000 mg/L) and high organic loads (for example, petrochemical refining wastewater with COD generally 1500-2500 mg/L) often degrade the performance of traditional demulsification processes. The high-gravity mass-transfer demulsification technology, by contrast, shows extremely strong water quality adaptability:
For high-salinity wastewater, the purely physical mechanism avoids the inhibition of demulsification by salt ions. The high-gravity field and cyclonic shear can effectively break the stable emulsion system under high-salinity conditions, while salt ions do not affect equipment operating efficiency. After several days of continuous operation, treatment performance remains stable, and the decay in demulsification efficiency is far lower than that of traditional chemical demulsification processes.
For oily wastewater with a high organic load, the high-gravity mass-transfer characteristics enable rapid, efficient contact and separation of the oil and water phases, greatly increasing treatment capacity per unit time and reducing the pollutant load. Compared with traditional processes, this technology raises COD removal from 45% to 88% and oil pollutant removal from 50% to 99%, significantly reducing the operating pressure on downstream treatment units.
3. Reducing operating energy consumption and costs and improving process economics
Traditional demulsification processes (such as chemical demulsification) consume large amounts of chemicals, generate large volumes of sludge and entail high downstream treatment costs. The high-gravity mass-transfer demulsification technology uses a purely physical approach and requires no demulsifiers, flocculants or other chemical agents, greatly reducing chemical procurement and sludge disposal costs.
By optimising mass-transfer efficiency, the technology shortens demulsification and separation time, and the equipment footprint is only 1/3-1/2 that of traditional processes. The equipment also has low operating energy consumption, cutting electricity consumption per tonne of water by more than 30% compared with traditional processes. In addition, maintenance is simple, reducing labour and maintenance costs and significantly improving the economic viability of the wastewater treatment process.
4. Ensuring process stability and extending the operating cycle
The high-gravity mass-transfer demulsification technology is based on purely physical action and does not depend on complex chemical systems or microbial communities. It is little affected by external factors such as water quality fluctuations and temperature changes, and produces no secondary pollution such as chemical residues or metal leaching, meeting the GB 8978-1996 Integrated Wastewater Discharge Standard. At the same time, cyclonic shear and high-frequency vibration effectively prevent scaling and clogging inside the equipment, reducing maintenance frequency and extending the process operating cycle. Compared with conventional demulsification processes, this technology offers significantly better operating stability and a longer equipment service life, greatly reducing the extra costs of process shutdowns and equipment replacement.
The high-gravity mass-transfer demulsification separation technology independently developed by SINOKLE Technology Co., Ltd., with cyclonic flow and high-frequency vibration at its core, comprehensively optimises oily and emulsified wastewater treatment processes across multiple dimensions - pollutant removal depth, process applicability, operating economics and stability - thanks to its core advantages of extremely strong mass-transfer efficiency, efficient demulsification capability and wide water quality adaptability. The technology not only effectively solves the treatment challenges of industrial wastewater that is difficult to demulsify or has high salinity and high loads, but also eliminates the use of chemical agents entirely, avoiding secondary pollution and aligning with the trend of green, environmentally friendly development.
As a purely physical demulsification and separation technology, it has a wide range of application scenarios in petrochemicals, machinery manufacturing, metal processing, oil and gas production and other industries. It is suitable both for breaking the emulsion system in pretreatment and as an advanced treatment unit to improve effluent quality. As large-scale application advances, the technology will play an even more important role in industrial wastewater resource recovery and water resource recycling and protection, providing efficient and sustainable technical support for green, low-carbon industrial development, with broad prospects for industrial application.
