Tag: physical
In the realm of water treatment, thickening plays a crucial role in the management of wastewater sludge. The process involves increasing the solids concentration, thereby reducing the volume of the sludge to be handled. Efficient thickening is advantageous as it can significantly cut down transportation and disposal costs, and improve the overall operational efficiency of […]
Ultraviolet (UV) disinfection has emerged as a formidable and environmentally friendly method for treating wastewater. Unlike chemical approaches, UV disinfection relies on physical processes that neutralize pathogenic microorganisms by disrupting their DNA. This technology has found extensive application across the globe due to its efficacy in deactivating a broad spectrum of harmful microbes, including bacteria, […]
Mechanical grit removal systems are employed to ensure these abrasive materials are effectively separated from the organic load. The design considerations for grit removal systems are crucial, with factors like particle size, system capacity, and removal efficiency dictating the choice of technology. Optimizing grit removal efficiency through tailored design and operation is paramount, as it […]
Safe drinking water and effective wastewater treatment are critical for protecting public health and the environment. Chemical technologies play an important role alongside physical and biological treatment methods. This article provides an overview of key chemical processes used, design considerations, and challenges for further improvement. Chemically-enhanced sedimentation (coagulation and flocculation) is used to remove suspended […]
Wastewater treatment engineering is a critical field in the USA, responsible for designing, implementing, and maintaining systems that ensure the safe and effective treatment of wastewater before it is released back into the environment. Various types of engineering work are required to accomplish this vital task: Civil Engineering: Civil engineers play a pivotal role in […]
Water is the sign of life. A global survey shows that approximately 70% of the earth’s surface is covered by water in the form of oceans, seas, rivers, lakes, etc. Despite being abundant, water is becoming highly scarce due to the growing disparity between freshwater supply and usage. The imbalance between the supply and demand […]
Screening is a critical first step in the wastewater treatment process that serves to protect the rest of the system from large debris. At wastewater treatment plants, water first passes through screens to remove objects such as rags, paper, plastics, and metals. This is essential not only to prevent physical damage to downstream equipment but […]