The Wastewater Treatment Plant mimics nature in its processes. In preliminary treatment, the treatment facility removes large objects from the wastewater stream. These are typically inorganic in nature, for example; tires, logs, bricks, etc. From that point, the wastewater goes into a primary treatment phase.,
(PRY-mayr-ee TREET-ment) The first treatment given for a disease. It is often part of a standard set of treatments, such as surgery followed by chemotherapy and radiation. When used by itself, primary treatment is the one accepted as the best treatment.
Primary treatment basically involves physical removal of particles large and small from the sewage through the filtration and sedimentation. These are removed in stages initially floating debris is removed by sequential filtration.
In the primary stage, solids are allowed to settle and removed from wastewater. The secondary stage uses biological processes to further purify wastewater. Sometimes, these stages are combined into one operation.
Primary treatment works on sedimentation, where solids separate from the water through several different tanks. In contrast, secondary treatment uses aeration, biofiltration and the interaction of waste throughout its process.Nov 19, 2020
Aeration Basins: BiologicalnnFrom the Primary Clarifiers, the wastewater flows into large, rectangular tanks called Aeration Basins, where a biological treatment called the “activated sludge process” occurs.
In primary treatment, sewage is stored in a basin where solids (sludge) can settle to the bottom and oil and lighter substances can rise to the top. These layers are then removed and then the remaining liquid can be sent to secondary treatment. Sewage sludge is treated in a separate process called sludge digestion.Jan 3, 2021
Natural wastewater treatment systems are biological treatment systems that require no or very little electrical energy; instead, they rely on entirely natural factors such as sunlight, temperature, filtration, adsorption, sedimentation, biodegradation, etc., to treat wastewater or fecal sludge.
The objective of primary treatment is the removal of settleable organic and inorganic solids by sedimentation, and the removal of materials that will float (scum) by skimming.