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Qingdao Conqinphi Environmental Technology Group Co., Ltd., established in 2015, is a professional manufacturer specializing in high-efficiency wastewater treatment solutions. With a factory covering 10,000–30,000 square meters and an annual export value exceeding US$10 million, we have supplied reliable equipment to markets across North America, South America, Europe, Asia, Africa, and Oceania. Our High COD Effluent Treatment System Multi-Stage Evaporator is engineered to tackle the most challenging industrial effluents, offering exceptional concentration capabilities and pollutant reduction.
This multi-stage evaporation system utilizes a series of evaporation chambers operating at progressively lower pressures, maximizing energy efficiency while effectively separating water from high-COD contaminants. The result is a substantial reduction in waste volume (up to 95% volume reduction), with the concentrated residue often suitable for further treatment or disposal. The system is designed for continuous operation, requiring minimal manual intervention thanks to its PLC-based automatic control.
Key Features & Benefits:
- Multi-stage evaporation design – Each stage recovers latent heat from vapor, dramatically lowering overall energy consumption compared to single-stage evaporators.
- High COD removal efficiency – Capable of handling influent COD levels from 10,000 mg/L to over 100,000 mg/L, with typical removal rates exceeding 99%.
- Robust construction – Main contact parts are fabricated from stainless steel 304 or 316L, ensuring excellent corrosion resistance against aggressive chemicals.
- Compact footprint – Modular design allows flexible installation even in space-constrained facilities.
- Automatic operation – Equipped with Siemens or equivalent PLC and HMI touch screen, enabling real-time monitoring, alarm management, and remote diagnostics.
- Low maintenance – Self-cleaning options (e.g., CIP system) reduce downtime; spare parts are readily available.
- Environmentally friendly – Closed-loop system minimizes odors and emissions; condensate water can be reused or discharged within standards.
Technical Specifications (Typical Range):
| Parameter | Specification |
| Number of Stages | 3 / 4 / 5 (customizable) |
| Processing Capacity | 500 – 10,000 L/h (customizable) |
| Evaporation Temperature | 60 – 100 °C (adjustable per stage) |
| COD Removal Efficiency | ≥99% (typical) |
| Power Consumption | Optimized, typically 30–50% lower than single-stage |
| Control System | PLC + HMI (Siemens or compatible) |
| Material of Construction | SS304 / SS316L (optional higher alloys) |
| Standard Compliance | ISO9001, ISO14000, OHSAS18001 |
The system is particularly effective for treating wastewater from industries such as chemical manufacturing, pharmaceuticals, textile dyeing, landfill leachate, food processing, and petrochemicals. By concentrating the waste stream, it significantly reduces the cost of downstream disposal (e.g., incineration or landfill) and often allows recovery of valuable by-products. Many of our clients have achieved a return on investment within 12–18 months due to reduced hauling fees and energy credits from heat recovery.
Trust & Reliability: Qingdao Conqinphi is an ISO9001 & ISO14000 certified manufacturer with a dedicated R&D team of over 20 engineers. Our factory has delivered more than 300 wastewater treatment systems worldwide. We provide comprehensive after-sales support including installation supervision, operator training, and remote technical assistance. With a strong presence in over 15 countries, our commitment to quality and customer satisfaction is proven by long-term partnerships with global enterprises.
Frequently Asked Questions:
Q1: What is the maximum COD concentration that this system can handle?
A1: The system is designed for high-strength wastewater with COD up to 150,000 mg/L. For extreme cases, pre-treatment or customized design is available.
Q2: How many evaporation stages can be configured?
A2: Standard configurations offer 3, 4, or 5 stages. The number of stages is selected based on feed characteristics and energy efficiency targets.
Q3: What is the typical energy consumption per cubic meter of treated water?
A3: Energy consumption depends on feed concentration and number of stages. Typically, it ranges from 30 to 80 kWh/m³ of evaporated water, which is 30–50% lower than conventional single-stage systems.
Q4: Is the system fully automatic? Can it operate unattended?
A4: Yes, the PLC-based control system allows fully automatic operation with minimal human intervention. Alarms and automatic shutdown protect the equipment. Remote monitoring via SCADA can be integrated.
Q5: What materials are used for parts in contact with the liquid?
A5: Standard materials are stainless steel 304 and 316L. For highly corrosive streams, options like duplex stainless steel, titanium, or polymer-lined vessels are available upon request.
Q6: Can the system handle variable flow rates?
A6: Yes, the system is designed with a buffer tank and control valves to accommodate flow variations within ±20% of rated capacity. For larger fluctuations, we recommend installing an equalization tank upstream.
Q7: What is the expected lifespan of the equipment?
A7: With proper maintenance, the system typically operates for 15–20 years. Key components like heat exchangers and pumps are built to minimize wear and are easily replaceable.
Q8: Do you offer installation and after-sales service for overseas clients?
A8: Yes, we provide installation supervision, commissioning, and training by our experienced engineers. Long-term spare parts supply and remote technical support are included in our service package.
Contact us today to discuss your specific effluent treatment requirements. Our team will provide a tailored solution and competitive quotation based on your wastewater analysis.
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