LIANCUI TECHNOLOGY Integrated of manufacturing R&D and sales of equipments on synthesis reaction, extraction, separation and purification and other analytical Instruments. Our products are mainly used in chemical industry, pharmaceutical, hydrometallurgy, food, new materials, new energy, environmental protection and other fields.
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How to treat high COD, recalcitrant alcohol and ether organic wastewater using a mixer settler?

2026-03-04
As customer's inquiry, MCG-650 mixer settler as the core equipment we customized, it adapt to innovation process that is "multi-stage countercurrent extraction + intelligent temperature control + modular design," achieving efficient treatment and resource utilization of organic wastewater.

1.    Multi-stage Countercurrent Mixer settler Extraction System
It is integrates a five-stage mixing and clarification unit. By adjusting the stirring speed (50-500 rpm) and the residence time in the clarification chamber (10-30 minutes), achieving gradient separation of organic matter and water. For example, when treating wastewater containing ethylene glycol ethers, a three-stage countercurrent extraction process increases the target substance recovery rate from 65% in traditional processes to 92%, shortens the phase separation time to within 30 seconds, and improves efficiency by three times compared to traditional extraction towers. Its unique stepped mixing-clarification structure reduces the probability of axial back mixing, ensures uniform material residence time, and promotes sufficient contact and reaction between organic matter and the extractant, improving the selectivity and yield of the extraction.

2. Intelligent Temperature Control System
Addressing the complex composition and heat-sensitive characteristics of organic wastewater, MCG-650 mixer settler is equipped with a multi-segment temperature control system ranging from 25-80℃. In rapeseed oil deep processing wastewater treatment, this system increased the vitamin E recovery rate from 60% to 95%, achieving a purity of 98.47%, with the product obtaining EU organic certification. In antibiotic extraction processes, the system reduced process fluctuations by 70%, increasing the product qualification rate from 85% to 99%. Precise temperature control prevents the degradation of heat-sensitive components, ensuring high-purity recovery of target compounds.

3. Modular and Corrosion-Resistant Design
The equipment adopts a snap-fit inter-stage connection design, allowing single-stage modules to be replaced within 2 hours, supporting flexible process adjustments. For example, if a company needs to increase the number of extraction stages due to production upgrades, the equipment expansion can be completed in just 8 hours, saving 70% of the modification time compared to traditional welded equipment. The tank body is made of PPH (polypropylene homopolymer), while the agitator and piping are made of 316L stainless steel or Hastelloy alloy. It can withstand extreme environments with pH values ranging from 2 to 14 for extended periods, extending its lifespan by 5 times compared to traditional carbon steel equipment and reducing maintenance costs by 60%.

4. Intelligent Control System
An integrated PLC automatic control system monitors 12 parameters in real time, including feed flow rate, rotation speed, and temperature, and automatically adjusts operating conditions through AI algorithms. Even when treating wastewater with concentration fluctuations of ±30%, the system maintains a separation accuracy of over 95%. For example, when the feed flow rate fluctuates by ±10%, the system automatically adjusts the agitation power to ensure stable separation efficiency. Furthermore, the equipment is equipped with 5G+edge computing technology, allowing engineers to remotely adjust parameters and diagnose faults, achieving unattended production.



Mixer settler help the users as following points:

1. High Efficiency 
Capacity Leap: The mixer settler increases the company's annual processing capacity from 50,000 tons to 150,000 tons, with a daily processing capacity of 40m³ per unit, meeting the company's large-scale continuous production needs.

2.High Purity 
 The purity of the extracted organic matter reaches over 99.9%, with impurity content meeting national standards. It can be directly used in the production of high-end products, increasing product added value.

3.Cost Savings
Solvent recycling rate exceeds 98%: The molecular distillation unit recovers the extractant, allowing for over 200 recycling cycles, saving over 2 million yuan annually in extractant procurement costs.

Reduced Energy Consumption: The non-annular mixing structure means the drum itself does not participate in mixing, reducing energy consumption by 20% compared to traditional equipment. In a project treating 50,000 tons of wastewater annually, this saves over 500,000 yuan in electricity costs annually.

Reduced Maintenance Costs: The equipment operated continuously for 3000 hours without mechanical failure, a failure rate 82% lower than traditional equipment, resulting in a 45% reduction in annual maintenance costs.

4. Environmental Benefits
Wastewater meets discharge standards: The treated wastewater COD concentration drops from 6000 mg/L to below 80 mg/L, with heavy metal and organic matter residues <0.05 g/L, meeting national emission standards and achieving the "zero discharge" goal.

Hazardous Waste Reduction: Reduces hazardous waste disposal volume by 12,000 tons annually, lowers treatment costs by 60%, and helps enterprises achieve green transformation.

Mixer settler Applications 
  • Petrochemicals: Achieves a 99.5% aromatic hydrocarbon recovery rate in sulfolane extraction units, with product purity exceeding 99.9%.
  • Hydrometallurgy: Reduces heavy metal and fluoride ion concentrations below national emission standards when treating zinc- and fluoride-containing waste acid, recovering 2,160 tons of zinc oxide per year, resulting in direct economic benefits exceeding 20 million yuan.
  • Environmental Treatment: Achieves a phenol recovery rate exceeding 95% in phenol-containing wastewater treatment, saving over 3 million yuan in production costs annually.
We provide a full-process service from laboratory R&D and pilot-scale production to industrial production.

Laboratory R&D: Experimental extraction tanks are adapted for small-scale R&D and formula optimization, completing process verification within 72 hours.

Pilot-scale Production: Pilot-scale extraction tanks support multi-stage series operation, accurately simulating industrial-grade separation effects.

Industrialized production: Industrial-grade extraction tanks meet the needs of large-scale continuous production and support customized design.