Aeration Tank In Water Treatment Plant

The air is mixed with the water inside the aeration tank at right.

Aeration tank in water treatment plant. Aerator in water treatment plant works in the secondary treatment process. Many industrial and municipal wastewater treatment plants use the aeration process. Also the operation of the aeration pumps is costly making the aeration tank step the most expensive step in the wastewater treatment process. Although a variety of analyses are performed in the aeration tank to ensure ideal conditions the two most important parameters in the aeration tank are ph and dissolved oxygen do.

Examples of these storage tanks and lagoons would be ones used as sludge holding and flow equalization. In these portions of a wastewater treatment system tank or lagoon it is important to maintain the living microorganisms. The aerobic treatment unit components pretreatment tank aeration chamber air pump and settling chamber work together to treat the water to a high quality. A well designed aeration system has a direct impact on the level of wastewater treatment it achieves.

Foam in wwtp is normally sticky viscous and brown in color. Some of the air is vented to the atmosphere through the small vent valve on top of the aeration tank. After a short residence in the tank the aerated water continues to the next treatment stage via the water pipe at right. The foam can occur in aeration tank secondary clarifier as well as in anaerobic digester.

Aeration is the most critical component of a treatment system using the activated sludge process. Large bubble aeration systems 14 if mechanical adhesion achieves strong water agitation in the tank it produces intense mixing between water mud and air. Fine bubble aeration systems 13 figure 6. In the system wastewater first enters the pretreatment tank or trash trap which removes plastic objects and other solids that float or settle.

The general arrangement of an activated sludge process for removing carbonaceous pollution includes the following items. Aeration water treatment is effective for management of dissolved gases such as radon carbon dioxide some taste and odor problems such as methane and hydrogen sulfide as well as volatile organic compounds like mtbe or industrial solvents it is also effective in precipitating dissolved iron and manganese aeration raises the ph of water. The aerator activates the sludge process by pumping air into a tank which results in increased microbial growth in the wastewater. An ample and evenly distributed oxygen supply in an aeration system is the key to rapid economically viable and effective wastewater treatment.

Wastewater aeration is also used in tanks and lagoons used for storage. When to use aeration.