What are the commissioning steps for wastewater dissolved air flotation

1

Equipment Inspection and Pretreatment Preparation

Thoroughly inspect the connections of all equipment components to ensure there are no leaks in the piping
Check that valves operate freely and transmission parts are adequately lubricated
Clean impurities and residual foreign matter from the flotation tank
Verify the installation accuracy of core components such as the scraper and dissolved air system
Pre-treat the incoming water to remove large particles and adjust the water pH to an appropriate range
Prevent impurities from clogging the dissolved air releaser or affecting the reagent reaction

2

Start the equipment and run it no-load
Test the pressure stability of the dissolved air system and adjust the dissolved air flow rate to the designed range
Check the operating status of the bubble generator, observe the bubble size and distribution uniformity
Optimize bubble quality by adjusting the air intake
Test the scraper's trajectory and speed to ensure smooth scum collection
Record the operating parameters of each component and check for abnormal noise or vibration

3

Configure the collector and flocculant according to water quality characteristics
Start the chemical dosing system proportionally and gradually adjust the dosage
Observe the chemical-wastewater mixing reaction
Determine the optimal chemical ratio through sampling and testing
Ensure that the target pollutants fully form floatable flocs
Adjust the agitator speed to ensure uniform mixing of the chemical and wastewater

4

Perform load debugging with actual wastewater
Continuously monitor influent and effluent pollutant concentrations
Observe scum formation and bubble adsorption
Adjust parameters such as inlet flow rate and dissolved air pressure based on scum thickness and water quality
Observe the scraping effect and promptly remove scum
Analyze the scum composition to determine the completeness of separation