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So Allegheny County founded the Allegheny County Sanitary Authority, or Alcosan, in the 1940s. [2] Financing the system was a major hurdle involving squabbles between Pittsburgh and surrounding communities. This hurdle was cleared when Alcosan secured a four-year loan of $100 million, the largest for sewage treatment in American history, in ...
Construction of the Mill Creek Sewer in West Philadelphia, ca. 1883. The Philadelphia Water Department has been providing water to citizens since 1801, when, in the aftermath of a series of devastating yellow fever epidemics that killed thousands of people, the City decided a source of water was needed to cleanse the streets, fight fires, and perform household chores.
Greater Greensburg Sewage Authority has invested more than $15 million in capital improvements [32] to the treatment plant and sewer system over the past twenty years, including expanding the plant from its former capacity of 2.5 million gallons a day to its current capacity, and separating storm and sanitary sewer lines per the Stormwater ...
An example of a wastewater treatment system. Sanitary engineering, also known as public health engineering or wastewater engineering, is the application of engineering methods to improve sanitation of human communities, primarily by providing the removal and disposal of human waste, and in addition to the supply of safe potable water.
Infiltration/Inflow (I/I or I&I) is the process of groundwater, or water from sources other than domestic wastewater, entering sanitary sewers.I/I causes dilution in sanitary sewers, which decreases the efficiency of treatment, and may cause sewage volumes to exceed design capacity.
Sediment piles are over 2 feet (0.61 m) on the creek at Division Street and 3 feet (0.91 m) or 4 feet (1.2 m) in the Brookside area. Sewage is discharged into the creek at several locations. [8] It has been discharged into the creek since at least 1909. [9] Additionally, there are debris dams in various areas on the creek. [5]
In both cases, the biomass must be exposed to both wastewater and air for the aerobic digestion to occur. The film itself may be made of any suitable porous material, such as formed plastic or peat moss. Simple systems use stationary media, and rely on intermittent, gravity driven wastewater flow to provide periodic exposure to air and wastewater.
Permits typically require reporting of wastewater flow and the results of one or more chemical tests corresponding to the effluent limitations. Typical monitoring parameters include pH, biochemical oxygen demand (BOD), total suspended solids (TSS), nutrients (nitrates and phosphorus), various toxic pollutants, temperature, etc.