Technical parameters of dissolved air flotation machine

Dissolved air flotation machine is a water treatment equipment that integrates functions such as dissolved air water preparation, microbubble generation, contact with dissolved air, flocculation, separation, water collection, and slag discharge. Its working principle is mainly to mix and dissolve air with pressurized water to form high concentration dissolved water, and then use the sudden release method to generate a large number of fine bubbles, causing suspended solids or colloidal particles in the water to adhere to the bubbles and float to the water surface with the bubbles, thus achieving the purpose of solid-liquid separation.

For the air flotation equipment system, the dissolved air system is like the "heart" of the air flotation equipment, and it is also the most important part of the air flotation equipment. The dissolved gas system mainly consists of a water pump, valves, dissolved gas tank, release device, and air compressor. Adopting an internal circulation method, a dynamic equilibrium system is achieved through an uninterrupted process of gas dissolution and release. Dissolved air water is a mixture of air and water formed by lifting clean water from an air flotation tank through a reflux pump to a dissolved air tank, where compressed air is dissolved in the water under a certain pressure,; The required dissolved air is provided by an air compressor and the gas flow rate and pressure are regulated by a pressure regulating valve. The entire gas dissolution system has a gas dissolution rate of 10%, ensuring even dispersion of microbubbles during gas dispersion, with an average bubble diameter of less than 30 µ m.

The dissolved air flotation machine is suitable for treating water with low turbidity, high chromaticity, high organic content, low oil content, low surface active substance content, or water rich in algae. Compared to other air flotation methods, it has the advantages of high hydraulic load and compact tank body.

Technical parameters of dissolved air flotation machine

The air flotation machine can effectively remove oil, gel like substances, suspended solids, BOD, and COD from sewage. Installing this equipment before the biochemical secondary sewage treatment plant can greatly reduce the scale of the treatment plant, thereby reducing a large amount of overall investment costs. The machine itself occupies a very small area and no longer requires equipment such as pressure vessels, air compressors, and circulation pumps, reducing the investment cost of many sewage treatment equipment.

Debugging of dissolved air flotation machine:

1. Before equipment debugging, the following preparations should be made:

(1) Clean all the dirt and debris in the pool.

(2) Lubricate the parts that require lubrication, such as the water pump and scraper.

(3) Connect the power, start the water pump, check if the direction of rotation is consistent with the direction indicated by the arrow, and promptly investigate the cause if any abnormal situation is found.

(4) Press the foam scraper switch to scrape off the upper layer of floating debris.

advantage

High solid-liquid separation efficiency: It can quickly and effectively remove various pollutants such as suspended solids, oil, colloids, etc. in sewage, and has excellent reduction effects on key indicators such as COD and BOD.

Energy saving and consumption reducing: The dissolved gas technology and optimized operating mechanism result in lower energy consumption during operation.

Intelligent and convenient: Equipped with an intelligent control system, it can achieve functions such as automated operation, precise monitoring, and automatic fault alarm.

Small footprint: The compact and reasonable structural design minimizes footprint while ensuring processing efficiency.Technical parameters of dissolved air flotation machine

Application field

Printing and dyeing wastewater treatment: It can effectively remove pollutants such as dye particles and additives from printing and dyeing wastewater, reduce the color and chemical oxygen demand (COD) of wastewater, improve the biodegradability of wastewater, and provide good conditions for subsequent biochemical treatment.

Chemical wastewater treatment: It has a good removal effect on various organic pollutants, heavy metal ions, etc. in chemical wastewater, which can meet the discharge standards or reuse requirements.

Food processing wastewater treatment: It can remove pollutants such as oil, protein, suspended solids, etc. from food processing wastewater, reduce the load of subsequent treatment processes, and improve the treatment efficiency of wastewater.

Paper making wastewater treatment: used for the treatment of paper making wastewater, which can recover fibers from the wastewater, reduce COD and chromaticity of the wastewater, achieve the recycling of wastewater, and reduce the waste of water resources.