Â­TÂ­here are many different ways to create a motion sensor. For example: 1  It is common for stores to have a beam of light crossing the room near the door, and a photosensor on the other side of the Â­room. 2  When a customer breaks the beam, the photosensor detects the change in the amount of light and rings a bell.
Effluent is an outflowing of water or gas from a natural body of water, or from a manmade structure. Effluent, in engineering, is the stream exiting a chemical reactor. Effluent is defined by the United States Environmental Protection Agency as wastewater - treated or untreated - that flows out of a treatment plant, sewer, or industrial outfall. Generally refers to wastes discharged into surface waters.
Septic tank effluent is the wastewater that is discharged or flows out of a septic system. Wastewater is any liquid or water that is produced from a building and may contain waste from sinks, bathtubs, toilets and appliances such as washers and dishwashers that use water.he drain field is the area where septic tank effluent is released. As new water enters the tank, it displaces the water already in the tank and forces it out in the drain field. A drain field typically consists of a series of buried perforated pipes that septic tank effluent flows through.