Innovative Application of Dissolved Air Flotation Technology in Industrial Wastewater Treatment: SINOKLE's CDFU System
With rapid industrial development, industrial wastewater composition has become more complex, presenting challenges such as oil, suspended solids, colloidal pollutants, and difficult-to-degrade organic compounds. Traditional treatment processes face issues like low solid-liquid separation efficiency, incomplete pollutant removal, and long treatment cycles.
As a mature and efficient water treatment core technology, dissolved air flotation (DAF) offers significant advantages in wastewater treatment due to its unique solid-liquid separation mechanism and process characteristics. It provides a reliable solution for industrial wastewater treatment and resource recovery.
Shenzhen Clear Science & Technology Co., Ltd (SINOKLE) has applied DAF technology in its Cyclonic Dissolved-gas Flotation Unit (CDFU), a proprietary system that enhances solid-liquid separation efficiency. By dissolving air into water to form supersaturated gas, it releases microbubbles that bind with pollutants, improving removal efficiency and addressing technical bottlenecks in traditional wastewater treatment.
I. Core Advantages of the Technology:
1. Efficient Solid-Liquid Separation: The bubbles released in DAF are 10-100μm in diameter, with high density and uniform distribution. They rapidly attach to pollutants, reducing their density and floating them to the surface for fast separation, achieving much higher efficiency than traditional sedimentation.
2. Wide Pollutant Compatibility: CDFU effectively removes both hydrophobic pollutants (e.g., oil) and hydrophilic ones (e.g., proteins, starches), including low-concentration fine particles that traditional methods struggle to treat.
3. Compact Process Design: CDFU units require less space, offering a high treatment load per unit area, saving over 50% of the land area compared to traditional sedimentation tanks.
4. Mild Treatment Conditions: This technology operates without high temperature or pressure, avoids excessive sludge expansion, reduces chemical use, and minimizes secondary pollution risks.
II. Positive Impact on Wastewater Treatment:
1. Targeted Pollutant Removal: CDFU is particularly effective for wastewater containing oil, suspended solids, and colloids, such as those from petrochemical, food processing, and dyeing industries. It achieves up to 95% oil removal and improves solids removal to over 90%, reducing the load on downstream treatments.
2. Adaptability to Complex Water Quality: CDFU is effective even with wastewater that has varying temperatures or contains fibers and pigments. For instance, it can treat low-turbidity wastewater in cold climates and remove small fibers and dyes in industries like textile and paper manufacturing, improving both transparency and resource recovery.
3. Cost-Effective Process Optimization: The CDFU system reduces the need for additional treatment units and chemical dosing, lowering operational costs. It requires 30% less energy than traditional aeration-based processes and reduces sludge volume, making it more cost-efficient.
4. Stable Operation and Low Maintenance: The DAF system's simple structure and automation reduce maintenance requirements by 50%, extending equipment lifespan to up to 35 years, compared to 12 years for conventional systems. It also maintains stable treatment performance despite fluctuations in water quality.
In summary, SINOKLE's CDFU technology addresses complex industrial wastewater challenges, offering a sustainable, efficient, and cost-effective solution. It aligns with trends in “high-efficiency treatment, green low-carbon processes, and resource recovery,” and has a promising future across industries such as petrochemicals, food, textiles, and paper.
