What is one function of equipment such as bar racks in preliminary treatment?

Bar racks serve an essential purpose in the preliminary treatment phase of wastewater treatment. Their primary function is to remove large debris and floating materials from incoming wastewater. This initial step is crucial because it helps to protect downstream equipment from clogs and damage, ensuring that the treatment process operates efficiently.

By effectively capturing bulky items such as sticks, plastic, and other debris, bar racks prevent these materials from hindering the operation of pumps and other mechanical systems later in the treatment process. This not only improves the overall efficiency of the treatment system but also enhances the safety and longevity of the equipment. Therefore, bar racks play a vital role in maintaining an unobstructed flow of wastewater, ultimately leading to more effective treatment outcomes.