The air flotation machine generates a large number of fine air bubbles in the water, and the fine air bubbles adhere to the fine suspended particles in the sewage to form a "bubble-particle" complex whose overall density is lower than that of water. scum, so that the suspended matter in the water can be separated. To achieve air flotation separation, the following two basic conditions must be met:
1. A sufficient number of fine air bubbles must be generated in the water;
2. The bubbles must be able to adhere to the pollutants and form an insoluble solid suspension.
In sewage treatment, dissolved air flotation machines are widely used in: treatment of various sewage containing small suspended solids, algae and micro flocs with a density close to or lower than that of water, and it is difficult to achieve solid-liquid separation by sedimentation; recycling industrial sewage Useful substances in the sludge, such as pulp fibers and fillers in paper mill sewage; instead of secondary precipitation, separation and concentration of excess activated sludge, especially suitable for those biochemical treatment processes that are prone to sludge bulking; separation and recycling of oily wastewater Suspended and emulsified oils.
Generally, after the air flotation machine is installed, the manufacturer's technicians are required to assist us in the installation. After the installation is completed, the air flotation machine can be debugged. After debugging everything is normal, the air flotation machine can operate normally. What are the correct installation steps for the air flotation machine? Let us first Learn about the specific air flotation equipment:
Before the air flotation equipment is installed, the foundation must be laid with concrete. It can also be installed overhead, but the foundation must be able to bear the weight of the equipment when it is running (the weight of the box filled with water). After the air flotation machine is in place, it is necessary to find a level. The air flotation machine needs to be equipped with a sewer for cleaning, or it can be directly connected to the adjustment tank by a pipeline, so that the water in the air flotation tank can be discharged. The connecting pipeline between the wastewater inlet and the reaction tank should be as short as possible, so as to avoid the flocs from being damaged in the pipeline. The clean water outlet can be connected to the clean water pool, or directly connected to the next processing equipment. The outlet of the suspended matter can be connected to the sludge thickening tank or the filter press to be processed by the sludge dewatering machine. The electrical box should generally be placed on the side of the escalator with protective rain-proof devices.
The correct installation of the air flotation machine can avoid problems such as equipment not running normally and improve efficiency.
