Requirements for the incoming water quality and adaptability of the aerated flotation water purifier

The aerated flotation water purifier is a common water treatment equipment. It produces microbubbles by injecting air into the water, causing suspended particles to adhere to the bubbles and float to the surface with the bubbles, thereby achieving solid-liquid separation. The aerated flotation water purifier plays an important role in the purification of industrial wastewater, domestic wastewater, and tap water. The requirements for incoming water quality and adaptability to different water qualities are key factors in its design and application.

1. Requirements for the quality of incoming water of the aerated flotation water purifier

The requirements of the aerated flotation water purifier for the quality of incoming water mainly include suspended solid content, turbidity, color, chemical oxygen demand (COD), biochemical oxygen demand (BOD), total oxygen demand (TOD), dissolved oxygen (DO), ammonia nitrogen, total nitrogen, total phosphorus, heavy metal ions, organic matter, microorganisms, etc. These indicators directly affect the operating effect and effluent quality of the aerated flotation water purifier. In most cases, the requirements of the aerated flotation water purifier for the quality of incoming water are as follows:

Suspension content: The aerated flotation water purifier has a high removal rate for suspended solids, but the content of suspended solids in the incoming water should not be too high. Generally, it is recommended that the suspended solid content not exceed 20mg/L. For incoming water with high suspended solid content, pretreatment such as sedimentation and filtration should be carried out first to reduce the suspended solid content and improve the operating efficiency of the aerated flotation water purifier.

Turbidity: The aerated flotation water purifier has no high requirements for the turbidity of the incoming water, generally recommended not to exceed 10NTU. However, for incoming water with high turbidity, the aerated flotation water purifier may need to adopt pretreatment measures such as coagulation sedimentation and filtration to reduce turbidity and improve the treatment effect.

Color: The air flotation water purifier has low requirements for the color of the incoming water, and it is generally recommended that the color should not exceed 15 degrees. However, for incoming water with high color, the air flotation water purifier may need to adopt pretreatment measures such as coagulation sedimentation and filtration to reduce color and improve the treatment effect.

Chemical oxygen demand (COD), biochemical oxygen demand (BOD): The air flotation water purifier has high requirements for COD and BOD in the incoming water, and it is generally recommended that COD and BOD should not exceed 50mg/L and 10mg/L respectively. For incoming water with high COD and BOD, the air flotation water purifier may need to adopt pretreatment measures such as chemical oxidation and biological degradation to reduce COD and BOD and improve the treatment effect.

Total oxygen demand (TOD): The air flotation water purifier has high requirements for TOD in the incoming water, and it is generally recommended that TOD should not exceed 100mg/L. For incoming water with high TOD, the air flotation water purifier may need to adopt pretreatment measures such as chemical oxidation and biological degradation to reduce TOD and improve the treatment effect.

Dissolved oxygen (DO): The air flotation water purifier has high requirements for dissolved oxygen in the incoming water, and it is generally recommended that dissolved oxygen should not be less than 5mg/L. For incoming water with low dissolved oxygen, the air flotation water purifier may need to adopt pretreatment measures such as aeration and stirring to increase dissolved oxygen and improve the treatment effect.

Ammonia nitrogen, total nitrogen, total phosphorus: The air flotation water purifier has high requirements for ammonia nitrogen, total nitrogen, and total phosphorus in the incoming water, and it is generally recommended that ammonia nitrogen, total nitrogen, and total phosphorus should not exceed 5mg/L, 20mg/L, and 1mg/L respectively. For incoming water with high ammonia nitrogen, total nitrogen, and total phosphorus, the air flotation water purifier may need to adopt pretreatment measures such as chemical precipitation and biological degradation to reduce ammonia nitrogen, total nitrogen, and total phosphorus, and improve the treatment effect.

Secondly, the adaptability of the air flotation water purifier to different water qualities

The adaptability of the air flotation water purifier to different water qualities mainly depends on its design and operating parameters. For incoming water with high suspended solids content, high turbidity, high color, high COD, BOD, TOD, ammonia nitrogen, total nitrogen, and total phosphorus, the air flotation water purifier may need to adopt pretreatment measures such as coagulation sedimentation, filtration, chemical oxidation, and biological degradation to reduce suspended solids, turbidity, color, COD, BOD, TOD, ammonia nitrogen, total nitrogen, and total phosphorus, and improve the treatment effect. For incoming water with low suspended solids content, low turbidity, low color, low COD, BOD, TOD, ammonia nitrogen, total nitrogen, and total phosphorus, the air flotation water purifier may not need to adopt pretreatment measures and can directly perform air flotation treatment to improve the treatment effect.

In summary, the water quality requirements and adaptability to different water qualities of the air flotation water purifier are key factors in its design and application. In practical applications, it is necessary to reasonably select pretreatment measures according to the characteristics of the incoming water quality to improve the treatment effect and effluent quality of the air flotation water purifier. At the same time, regular maintenance and maintenance of the air flotation water purifier are also required to ensure its long-term stable operation.