An effluent water treatment plant works by removing sludge, scum and bacteria from wastewater before releasing the effluent, or treated water, back into the environment, according to the U.S. Geological Survey. Wastewater enters the treatment plant and goes through several processes before effluent goes into a nearby lake or river.Continue Reading
Treating wastewater begins when water enters the plant and goes through several concrete tanks that aerate water. This air forces particulate matter like coffee ground or sand to settle out of the water while oxygen is replenished. Another set of sedimentation tanks removes organic sludge from water. Sludge is heavier than water and it sinks to the bottom. Scum is then removed as substances such as grease and oil float to the top. The last portion of treating wastewater involves killing bacteria by adding chlorine to water, much in the same way harmful substances are killed in swimming pools. The chlorine is then neutralized before the water is sent back into the environment.
The Patapsco Wastewater Treatment Plant near Baltimore services more than 63 million gallons of water per day. The Blue Plains Advanced Wastewater Treatment Plant goes through more than 330 million gallons of raw sewage daily. The World Bank states modern processes can remove up to 99 percent of impurities from sewage, making the finished effluent almost drinking quality.Learn more about Industries
A hydroponic growing system works by saturating a plant's roots with a nutrient-rich water solution. Because the solution carries everything a plant needs to grow and thrive, soil is unnecessary. Hydroponic growing systems also use some type of neutral medium, a material that supports the plant's roots.Full Answer >
A tunnel boring machine works by rotating a cutting-head at the front of a tube shaped body the size of the tunnel. Ground material passes through the body and is removed from the tunnel by a conveyor belt.Full Answer >
A dump truck works by using hydraulic pistons that lift the dump box at a steep angle, allowing whatever is in the dump box to fall into whatever pile the dump truck designates. Another type of dump truck uses a panel held in place by hydraulic cylinders in the dump box. The cylinders push the panel to the back of the dump box, forcing the contents of the box through a tailgate.Full Answer >
Sand septic systems utilize sand to filter harmful substances out of water while providing an environment for microorganisms that convert a great deal of the dangerous substances in wastewater into harmless by-products. These systems work well in regions with high groundwater, poor soil, shallow bedrock and other limitations.Full Answer >