ClearFox® DAF
Dissolved Air Floatation
Advanced Physico-Chemical Separation Process Technology
- Space Saving
- High Efficiency
- Fast Installation
- Flexible Use
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Description
The ClearFox® Dissolved Air Floatation (DAF) is a physico-chemical separation process used to remove solids, oils, hydrocarbons, dissolved metals and organic compounds (COD) from process and wastewater. In this process, water that has been saturated with air under high pressure is introduced into the flotation cell. When the pressure is suddenly released, fine microbubbles form, which attach to the flocs and carry them to the surface. Our flotation systems are modular in design and can either be installed in containers or as standalone units.
How It Works
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The ClearFox® DAF is a fully automated unit. The wastewater to be treated is fed via a clog-free cavity pump either from the customer’s equalization tanks or from ClearFox® buffer tanks. - In a polymer preparation station, additives are mixed to support the flocculation and flotation process. These polymers are automatically dosed into the incoming wastewater.
- Using a multiphase pump, the water stream is continuously saturated with air and then fed into the reactor via recirculation. The pressure release causes fine air bubbles to lift suspended solids to the surface. These floatables are collected in the upper part of the reactor, concentrated, and discharged through a conical outlet using compressed air.
- The treated wastewater is discharged from the middle of the reactor and can either be released as clean water or directed to the next treatment stage. The compacted sludge is discharged by gravity.
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ClearFox® DAF units have low operating and maintenance costs. We do not use any mechanical sludge scrapers with moving chains (no lubrication required). The systems are robust, reliable, and have been successfully used for years across various industries. An optional remote monitoring and access system is available. This allows real-time monitoring of operating data and remote adjustment of settings if necessary. Customers have direct access and can view all relevant operating conditions at any time. All our technical components are certified and approved.
Advantages
- Cost Savings
Lower OpEx Through Reduced Chemical Consumption
Our dissolved air flotation system operates with a vertical upward flow. Combined with the round tank design, this ensures complete mixing of the entire volume. Dead zones, like those found in rectangular, horizontally flowing systems, do not exist in our flotation. For operators, this results in up to 15% less chemical usage, significantly lowering operating costs.
- Space Saving
Flexible, Compact and Customized to Your Needs
Our modular system is tailored to the specific requirements of your facility and can be easily expanded later if needed. The round flotation design is more space-efficient than rectangular systems and can either be installed free-standing or containerized, depending on the situation on site. This allows our flotation units to be seamlessly integrated into existing processes and offers maximum planning flexibility for customers.
- Automatic Operation
Fully Automated Operation and Remote Monitoring
The system operates fully automatically, independently managing both process control and chemical dosing. Optional remote monitoring with remote access allows operation conditions to be conveniently checked and adjusted at any time from any location. This saves time, reduces workload for personnel and ensures smooth operation.
- Extended Lifetime Use
Safe Operation and Low-Maintenance Due to PP
Our flotation units are made of high-quality polypropylene, which offers excellent resistance to aggressive chemicals such as chlorides or acids. Unlike stainless steel, this material ensures long-term durability even under challenging conditions. The system is designed without any moving parts, eliminating the need for mechanical components like chains or scraper mechanisms. This means there are no wear points, ensuring trouble-free operation with minimal maintenance. Over the past twenty years, more than 250 systems have been successfully installed and are operating reliably around the world.
- Less Sludge
Reduced Sludge Volume Saves CapEx and OpEx
Our flotation system produces up to twice the dry solids content in the generated sludge compared to conventional systems. This significantly reduces the overall sludge volume. For operators, this means that a downstream sludge press can be designed much smaller and, in most cases, a separate thickener is not required. As a result, both investment and ongoing operational costs can be reduced. If the sludge is disposed of directly, the lower volume also leads to significantly reduced disposal costs.
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FAQs
1. What is the ClearFox® Dissolved Air Flotation (DAF) system?
The ClearFox® DAF is a modular unit designed for the efficient treatment of various types of industrial wastewater. It utilizes advanced technology to achieve high removal rates of pollutants, making it a flexible solution applicable to a wide range of wastewater applications.
2. What capacities can the ClearFox® DAF system handle?
The system’s capacities range from 1 m³/hr to 250 m³/hr. Its modular design allows for standalone installations or integration as a pretreatment step within a larger wastewater treatment plant.
3. What industries can benefit from the ClearFox® DAF system?
The ClearFox® DAF system is suitable for numerous industries, including:
- Meat processing and slaughterhouses
- Fish processing
- Dairy production
- Wine and juice production
- Breweries
- Canning factories
- Commercial kitchens and canteens
- Restaurants
- Cosmetics production
- Food transport companies
- Chemical industry
- Pharmaceutical industry
- Petrochemical industry
- Textile industry
- Paper industry
- Municipal wastewater treatment
- Plastic recycling industry
4. What are the key advantages of the ClearFox® DAF system?
The ClearFox® DAF system offers several benefits:
- High efficiency in reducing Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), and Fats, Oils, and Grease (FOG) by up to 99%
- Self-cleaning patented design, eliminating the need for mechanical scrapers in many applications
- Two-stage DAF process, unlike standard single-stage systems
- Integrated feed pump
- pH adjustment and flocculation system
- Lower chemical requirements compared to standard DAF systems
- Construction from polypropylene and high-density polyethylene, offering higher resistance to various liquids and chemicals compared to steel
- Suitability for high Total Dissolved Solids (TDS) wastewater
- Fully automatic operation
- Standardized manufactured models
- Compact design with a smaller footprint than standard DAF systems
- Clog-free saturation system
- Production of pre-thickened flotation sludge
- Ease of service
5. How does the ClearFox® DAF system work?
The ClearFox® DAF system operates fully automatically. A helical rotor pump feeds wastewater from an onsite equalization or collection tank into the reactor. The wastewater passes through a pH-regulation system to adjust any fluctuations before entering the DAF reactor. Additives are mixed in a polymer preparation station to aid flocculation. The system’s advanced design ensures efficient separation of pollutants from the wastewater.
6. What maintenance is required for the ClearFox® DAF system?
The ClearFox® DAF system is designed for low maintenance, featuring a self-cleaning patented design that often eliminates the need for mechanical scrapers. Its fully automatic operation and construction from corrosion-resistant materials further reduce maintenance requirements. Regular checks of wastewater composition, chemical supply, and air pressure are recommended to ensure optimal performance.
7. Can the ClearFox® DAF system be integrated into existing wastewater treatment plants?
Yes, the ClearFox® DAF system’s modular design allows for easy integration as a pretreatment step within existing wastewater treatment plants. It can also function as a standalone solution, depending on the specific requirements of the facility.
8. What materials are used in constructing the ClearFox® DAF system?
The ClearFox® DAF system is constructed from polypropylene and high-density polyethylene. These materials offer higher resistance to various liquids and chemicals compared to steel, enhancing the system’s durability and suitability for treating diverse wastewater types.
9. Is the ClearFox® DAF system suitable for high Total Dissolved Solids (TDS) wastewater?
Yes, the ClearFox® DAF system is suitable for treating wastewater with high Total Dissolved Solids (TDS) content, making it versatile for various industrial applications.
10. How does the ClearFox® DAF system handle sludge?
The system produces pre-thickened flotation sludge, which simplifies sludge handling and disposal processes. This feature contributes to the system’s overall efficiency and ease of operation.
