Search results
Results from the WOW.Com Content Network
Original file (1,275 × 1,650 pixels, file size: 1.09 MB, MIME type: application/pdf, 367 pages) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Most of the solids are removed by the septic tanks, so the treatment plant can be much smaller than a typical plant. In addition, because of the vast reduction in solid waste, a pumping system, rather than a gravity system, can be used to move the wastewater. The pipes have small diameters, typically 1.5 to 4 inches (4 to 10 cm).
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.
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.
Sewage treatment (or domestic wastewater treatment, municipal wastewater treatment) is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. [5]
Pittsburgh at one time had the highest rate of typhoid in the country; [3] in the late 19th century, about half of all foreign-born men became sick with typhoid within two years of arriving in the city. [2] Typhoid death rates dropped from about 130 per 100,000 population to about 30 per 100,000 after filtration of the water supply began in ...
Class P: Language and Literature is a classification used by the Library of Congress Classification system. This page outlines the subclasses of Class P. It contains 19 sub-classifications, 12 of which are dedicated to language families and geographic groups of languages, and 10 sub-classifications of literature (4 subclasses contain both languages and literatures).
Wastewater (or waste water) is water generated after the use of freshwater, raw water, drinking water or saline water in a variety of deliberate applications or processes. [1]: 1 Another definition of wastewater is "Used water from any combination of domestic, industrial, commercial or agricultural activities, surface runoff / storm water, and any sewer inflow or sewer infiltration".