一、Product Introduction
The Haipuou Environmental Protection Vertical-Flow Dissolved Air Flotation (DAF) unit is a highly efficient, integrated solid-liquid separation system designed for purifying various types of wastewater. It is widely used in municipal sewage treatment, industrial wastewater management, and surface water remediation. Utilizing the proven principles of dissolved air flotation combined with a vertical-flow process design, the equipment offers stable operation and high purification efficiency, serving as a core component for both preliminary and advanced wastewater treatment.
The operational workflow is scientifically structured: after chemical dosing and flocculation, the wastewater enters the mixing zone of the DAF unit, where it thoroughly mixes with high-pressure dissolved-air water released by the system; this allows flocculated impurities to adhere firmly to the surfaces of micro-bubbles. The mixture then flows into the separation zone, where the bubbles—carrying the flocs—rise rapidly to the surface due to buoyancy, accumulating to form a layer of scum. Meanwhile, the clarified water in the lower section is collected and directed into a clean water tank; a portion is recycled as dissolved-air water to ensure continuous, stable operation, while the remaining treated water discharges through an overflow outlet.
Simultaneously, suspended solids (SS) with a specific gravity greater than water—which do not float—rapidly settle and accumulate in the conical section of the unit, where they are removed via periodic blowdown. Once the surface scum reaches a preset thickness, a fully automatic skimmer smoothly scrapes it into a sludge trough for centralized discharge. This dual-action process simultaneously separates floating impurities and settles heavier ones, ensuring comprehensive purification quality and effectively resolving common issues associated with traditional equipment, such as incomplete purification and difficult sludge handling.
二、Product Advantages
1. High throughput, high purification efficiency, and a compact footprint
The vertical-flow structure features a compact, rational layout with short flow paths and rapid separation speeds, offering a wastewater treatment capacity per unit volume that far exceeds traditional dissolved air flotation (DAF) equipment. The system requires minimal civil engineering work due to its highly integrated design; it occupies little space while handling high hydraulic loads, making it ideal for large-scale wastewater treatment projects and effectively reducing site construction costs.
2. Simple structure and process; convenient, hassle-free operation and maintenance
The system utilizes a streamlined process flow and simple structural design, featuring core components with low failure rates and exceptional operational stability. Operation is straightforward and does not require specialized personnel; routine tasks are limited to standard inspections and periodic sludge discharge and maintenance. This significantly lowers the complexity of manual operations and reduces long-term maintenance costs, making it suitable for routine wastewater treatment across various enterprises.
3. Effectively prevents sludge bulking and ensures stable operation
Compared to traditional activated sludge processes, the vertical-flow dissolved air flotation unit eliminates the root causes of sludge bulking. It prevents issues such as loose sludge structure, floating, and washout, thereby ensuring the continuous, stable operation of the treatment system. By effectively avoiding risks—such as effluent quality violations or system shutdowns caused by sludge-related problems—the equipment offers greater operational resilience and fault tolerance.
4. Dual action purification for thorough impurity removal
The equipment simultaneously and efficiently removes both buoyant and settleable suspended solids (SS). By purifying impurities through this dual-action approach, it overcomes the limitations of single-separation devices, significantly enhancing effluent clarity and effectively reducing pollutant levels, thereby laying a solid foundation for subsequent biochemical treatment and ensuring compliance with discharge standards.
5. Aeration for oxygenation and odor removal; optimized water quality and operating conditions
The air flotation process incorporates simultaneous aeration, efficiently degrading surfactants and odor-causing compounds to effectively eliminate sewage odors. Aeration also increases dissolved oxygen levels and aids in the degradation of certain insoluble COD components. This optimizes water quality, greatly alleviating the operational load on downstream processes and enhancing the overall performance of the wastewater treatment system.
6. Suitable for challenging water sources; excellent performance in low temperature, low-turbidity conditions
Traditional sedimentation equipment often performs poorly and fails to thoroughly remove impurities when dealing with challenging water sources—such as those characterized by low temperatures, low turbidity, or high algae content. In contrast, the vertical-flow dissolved air flotation (DAF) unit offers exceptional adaptability; it precisely captures fine algae, colloids, and suspended impurities. It is the ideal choice for purifying such water, delivering treatment results that far surpass those of conventional water treatment equipment.
三、Scope of Application
Haipou vertical-flow dissolved air flotation (DAF) machine is suitable for a wide range of water qualities and diverse application scenarios. Thanks to its stable purification performance and ease of operation and maintenance, it is ideal for various wastewater treatment and water purification projects. Its specific scope of application includes:
1. Surface Water Purification: Specifically designed for purifying surface waters—such as rivers, reservoirs, and landscape water bodies—characterized by low temperatures, low turbidity, and high algae content. It efficiently removes algae, colloids, and fine suspended solids, addressing issues like excessive turbidity, odors, and high color levels.
2. Industrial Wastewater Treatment: Widely used for the pretreatment and advanced purification of various industrial organic wastewaters (e.g., from papermaking, food processing, chemicals, light industry, and slaughterhouses). It efficiently removes suspended impurities, oils, and colloidal pollutants, ensuring wastewater meets discharge standards.
3. Municipal and Domestic Sewage Treatment: Suitable for sewage treatment projects in residential complexes, towns and villages, scenic areas, and industrial parks. It effectively removes suspended solids and organic impurities from domestic sewage, prevents sludge bulking, and ensures stable purification results.
4. Pretreatment for Wastewater Systems: Serves as a front-end pretreatment unit within a complete wastewater treatment system. It optimizes influent quality, reduces COD, and increases dissolved oxygen levels, thereby providing high-quality influent for subsequent processes such as biochemical treatment and reclaimed water reuse, ultimately enhancing the operational efficiency and stability of the entire treatment plant.
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