Key Points for the Application of Air Flotation Water Purifier in Papermaking Wastewater Treatment

The papermaking industry is an important pillar industry of the national economy. However, due to its high concentration, high COD, high color, high turbidity, and high salt content, the treatment of papermaking wastewater is difficult, causing serious environmental pollution. Therefore, how to effectively treat papermaking wastewater and achieve the resource utilization of wastewater is an important issue facing the papermaking industry. The air flotation water purifier, as an advanced wastewater treatment technology, plays a crucial role in the treatment of papermaking wastewater. This article will discuss the application of the air flotation water purifier in papermaking wastewater treatment from three aspects: the basic principle, application effect, and key points.

The basic principle of the air flotation water purifier

The air flotation water purifier utilizes an air compressor to transport air through high-pressure pipelines into the reaction pool. Through the buoyant force of bubbles, it causes suspended particles in the wastewater to float up, achieving the effect of solid-liquid separation. The air flotation water purifier is mainly composed of three parts: the aeration system, the reaction system, and the air flotation separation system. The aeration system dissolves air in water, the reaction system allows the wastewater to be fully mixed with the dissolved gas, and the air flotation separation system separates the suspended matter in the wastewater. This technology has the advantages of high efficiency, energy saving, and environmental protection in the treatment of papermaking wastewater, and can effectively remove pollutants such as suspended matter, color, and COD from the wastewater.

Application effect of air flotation water purifiers in papermaking wastewater treatment

Suspended solids removal: The air flotation water purifier can efficiently remove suspended solids in papermaking wastewater, with a removal rate of over 90%. Through the buoyancy of bubbles, suspended solids in wastewater are adsorbed and floated up, thereby achieving solid-liquid separation. The removal of suspended solids can reduce the turbidity of wastewater, improve the water quality of the effluent, and meet the environmental protection emission standards.

Pollutant removal: The air flotation water purifier can effectively remove COD, color and other pollutants in papermaking wastewater. COD is one of the main pollutants in papermaking wastewater. The air flotation water purifier combines organic matter in wastewater with bubbles through the buoyancy of bubbles, causing it to float up, thereby achieving the removal of organic matter. Color is one of the important indicators of wastewater. The air flotation water purifier can effectively reduce the color of wastewater by removing suspended solids, thereby improving the water quality of the effluent.

Energy saving and emission reduction: The air flotation water purifier has the characteristics of low energy consumption and low operation cost in the treatment of papermaking wastewater. Compared with traditional physical and chemical treatment methods, the air flotation water purifier has the advantages of low energy consumption, low operation cost, small land occupation, etc., which can effectively reduce the cost of wastewater treatment and achieve the goal of energy saving and emission reduction.

Key points of air flotation water purifiers in papermaking wastewater treatment

Design and selection of air flotation water purifiers: The design and selection of air flotation water purifiers are crucial for the treatment effect. During the design process, it is necessary to select the appropriate type of air flotation water purifier according to the water quality characteristics of the wastewater, such as dissolved air flotation, coagulation flotation, etc. At the same time, it is also necessary to reasonably determine the treatment capacity of the air flotation water purifier according to the wastewater treatment volume to ensure the treatment effect.

Operation and management of air flotation water purifiers: The operation and management of air flotation water purifiers is equally important for the treatment effect. During the operation process, it is necessary to regularly check the operating status of the air flotation water purifier to ensure its normal operation. At the same time, it is also necessary to adjust the operating parameters of the air flotation water purifier in a timely manner according to the changes in the water quality of the wastewater to ensure the treatment effect.

Maintenance and maintenance of air flotation water purifiers: The maintenance and maintenance of air flotation water purifiers is the key to ensuring the treatment effect. During the maintenance process, it is necessary to regularly check the operating status of the air flotation water purifier to ensure its normal operation. At the same time, it is also necessary to regularly replace the consumables of the air flotation water purifier, such as the aeration tank, flotation pool, etc., to ensure the treatment effect.

In summary, the air flotation water purifier has the advantages of high efficiency, energy saving, environmental protection, and can effectively remove suspended solids, color, COD and other pollutants in wastewater, realizing the resource utilization of wastewater. However, in practical application, it is necessary to reasonably select the type of air flotation water purifier according to the water quality characteristics of the wastewater, scientifically operate and manage, and regularly maintain and maintain to ensure the treatment effect.