Municipal Wastewater Treatment System

Currently, wastewater treatment plants are held to high standards. Therefore, biological treatment and tertiary treatment of wastewater requires highly effective equipment.

One of the main requirements for efficient operation of wastewater treatment plants is oxygen saturation.

Traditionally, mechanical aerators and mixers are used. Today, aeration mixers offer a more economical solution.

The design of the aeration mixer is a combination of a submersible mixer and aeration unit. As a result, the aeration mixer has two functions: aerating and stirring the mixed liquor. Aeration mixers are installed at the bottom of the tank, thus the sediment on the bottom of the container is agitated and aerated, and prevents the formation of stagnation.

In the absence of air supply, the unit operates as a submersible mixer, thus reducing energy costs.

Using aeration mixers enables increased efficiency of wastewater treatment at a lower cost.

To save energy, it is advisable to equip asynchronous motors used in the aggregate treatment plant with variable K-drives that allow adjustment of their rotational frequency so that it depends on the actual load.

Blower equipment used at wastewater treatment plants is the largest consumer of electric power. Depending on the size of the treatment plant for aeration of activated sludge there can be a few different power blowers.

With inverters, you can ensure optimum work of blowers, thus significantly reducing the power consumption of their work. Also, the service life of these units increases due to the smooth acceleration-deceleration of motors.

The above information applies to the wastewater pumps into the sewage pumping stations. Application of variable K-drives saves energy up to 30-50%.

Despite the high initial cost of K-drives, the capital investment is recouped within a year and a half.

Frequency convertors