What Is Upflow Anaerobic Sludge Blanket Digestion? The UASB process uses anaerobic microorganisms to degrade wastewater in a tank, with a blanket of granular sludge suspended by upward flow and gravity aided by flocculants. After 3 months, the blanket matures and small granules with bacterial aggregations form. These aggregations grow into dense biofilms known as […]
What Is An Imhoff Tank? The Imhoff tank is a chamber designed for the treatment of sewage. It was named after the German engineer Karl Imhoff who lived from 1876 to 1965. The tank is comprised of two separate chambers: the upper chamber where the sewage undergoes clarification through settling and sedimentation, and the lower […]
What Is A Manhole? The term “manhole” is also used informally to refer to utility covers mounted on the surface of streets, sidewalks, and driveways, such as those for electrical or fibre optic cables or telephone lines, or cable television wires. The word “manhole” dates back at least as far as the early 19th century; […]
What Is A Groundwater Recharge? Groundwater recharge is the process where water flows from the surface to underground aquifers, replenishing the groundwater supply. It happens both naturally, through precipitation, and artificially, like when rainwater or treated water is directed to the subsurface. The primary way water enters an aquifer is through recharge. Estimating recharge rates […]
What Is A Utility Vault? Utility vaults are underground structures that provide access to underground public utilities such as water and sewer lines. They minimize costs associated with digging up roads or sidewalks during repair or construction projects. The purpose of a vault is to house utility lines, such as electric and gas lines. The […]
What Are Sequencing Batch Reactors (SBRs)? The Sequencing Batch Reactor (SBR) is a wastewater treatment process where wastewater is treated in a single batch reactor to remove undesirable components, then discharged. This system allows for equalization, aeration, and clarification using only one reactor. To improve performance, multiple batch reactors are used in a set sequence. […]
What Is An Effluent? Effluent refers to wastewater released from sewers or industrial operations into surface waters, either untreated or after being processed at a treatment facility. It may contain various pollutants, depending on the source, and is considered a form of water pollution. Advances in technology have improved the efficiency of wastewater treatment, allowing […]
What Is Constructed Wetland? A constructed wetland is a man-made wetland that helps purify sewage, greywater, stormwater runoff, or industrial wastewater. It can also be used for restoring land after mining or as a replacement for natural areas that have been lost to development. It works by using the natural processes of plants, soil, and […]
What Is A Parapet Wall In Construction? A parapet wall is a wall that stands on the edge of any roof or balcony. It’s used to protect people from falling off the edge of a roof or balcony and give them something to hold onto while walking around the perimeter of their home. Parapet walls […]
What Does Wicker Chair Mean? Wicker is a long-lasting material that can be used for furniture, baskets and many other things. It’s made from a combination of grasses, reeds and twigs that are woven together to form the frame or shell of the piece. Wicker chairs are used widely as outdoor furniture because they’re durable […]