Aeration Tank In Water Treatment Plant

In municipal and industrial wastewater treatment aeration is part of the stage known as the secondary treatment process.

Aeration tank in water treatment plant. These microbes start eating the organic material and form the flocks that get settled easily. After settling in a separate settling tank bacteria forming the. Two general methods may be used for the aeration of water. 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.

To maintain the proper oxygen levels for biomass productivity wastewater treatment operators utilize aeration pumps which add oxygen to the tanks. Methods of aeration. Air is a powerful oxidizer of both iron and hydrogen sulfide. Aeration is used in water treatment as a pretreatment in the process of removing iron and hydrogen sulfide rotten egg smell from water.

Dissolved oxygen levels in the aeration tank must be maintained at 1 3 mg l for effective treatment. This paper presents the types of aeration systems used in the biological stage of a wastewater treatment plant. An aeration tank is a place where a liquid is held in order to increase the amount of air within it. The microbes feed on the organic material forming flocks which can easily settle out.

The ph of the aeration tank should be between 6 5 8 5 to avoid stress on the microbial community and for optimal biological activity. The way of change of the oxygen required for aeration in the tank depending on the. Low levels of do will result in the death of the microbial biomass which is timely and expensive to reestablish. Aeration wastewater treatment tanks are subject to careful monitoring to ensure that nutrient removal is achieved safely and efficiently.

Forcing air through the liquid or forcing liquid through the air. Aerator in water treatment plant works in the secondary treatment process. There are two main methods of aerating liquid. Both methods are common but the aeration tanks are very different between the two types.

Dissolved oxygen is a critical parameter in the aeration process because oxygen levels in the tank impact the health of the biomass microorganisms breaking down the nutrients. The aerator activates the sludge process by pumping air into a tank which results in increased microbial growth in the wastewater. Aeration as a water treatment practice is used for the following operations. At normal water temperatures aeration can reduce the carbon dioxide content of the water to as little as 4 5 mg l.

Aeration in an activated sludge process is based on pumping air into a tank which promotes the microbial growth in the wastewater. Carbon dioxide reduction decarbonation oxidation of iron and manganese found in many well waters oxidation tower ammonia and hydrogen sulfide reduction stripping aeration is also an effective method of bacteria control.