air flotation machine is one of the very important equipment in sewage treatment. This article describes the operation process and common problems of the dissolved air flotation machine

1. Inspection before startup:

(1) Check that all gate valves of the air flotation machine are in all normal operating conditions; (2) Check that the water level line of the container tank is in all normal operating conditions;

(3) Check that the electrical equipment is in all normal operating conditions.

2. Start the process:

(1) Configure and add coagulant, select the drug, and start the mixing system software; (2) Start the air compressor, open the bypass valve, and adjust the working pressure of the air inlet to 0.2MPa; The container tank sees water, adjust the container tank water level line to about 1/3 of the container tank liquid level transmitter. At this time, the working pressure of the container tank should be 0.4MPa. After the container inlet pump continues to work normally for 3-10min, that is The air flotation inlet water pump can be started; (4) According to the transformation of the effluent water body, adjust the dosage, inlet water volume, and container water volume to ensure the effluent water body; (5) According to the formation of sludge, operate the outlet gate valve, and adjust the sludge level gauge to wipe The slag machine is required to discharge sludge, start the slag scraper to scrape the slag; (6) After starting the machine, check the air flotation water seepage and drainage equipment to complete the balance of the incoming and outgoing water to ensure that the air flotation works normally.

3. Shutdown process:

(1) Turn off the scraper;

(2) Turn off the air flotation water pump.

4. Common problems:

(1) Once the tank level gauge is adjusted, it should be maintained, and it should not be adjusted frequently; (2) According to the effluent water body, immediately adjust the dosage, water intake, and container water volume; (3) Provide the rolling bearings, transmission chains, and sprockets on time. Chains, transmission gears, racks and pinions, slide rails are lubricated with grease (up to ten days), and maintenance is carried out every three months.

What causes the poor air flotation effect?

1. The releaser is blocked, causing large bubbles to appear in the air flotation contact area, which is flotated by the bad sticky air and impacts the scum, causing the scum to lose its stability and make the water turbid.

2. The dosage of yao agent is insufficient or the water intake is too large.

3. The air flotation reflux ratio is insufficient. The air flotation reflux ratio refers to the ratio of the water to be treated and the dissolved air water.

4. The moving speed of the air flotation machine is too fast when scraping the slag, so that the lower scum will be sheared and broken and the turbulent state will appear with the water. good.

Note: You can write to us or leave a message at any time to get technical support or solutions.

Email: info@tnwcn.com

Feedback: Click here