back-flow filter
1Filter (aquarium) — Aquarium filters are critical components of both freshwater and marine aquaria.cite book |last=Riehl |first=Rüdiger. Editor. |coauthors=Baensch, HA |title=Aquarium Atlas |year=1996. 5th Edn. |publisher=Tetra Press |location=Germany |isbn=3 88244… …
2Back-fire — For other meanings of the term see backfire. A Back fire or backfire is an explosion in the inlet manifold, carburetor/throttle body or air cleaner of an internal combustion engine.cite book last =Afgan first = authorlink = coauthors =Naim Afgan …
3Diesel particulate filter — A diesel particulate filter (top left) in a Peugeot Off road DPF Installa …
4Slow sand filter — Slow sand filters are used in water purification for treating raw water to produce a potable product. They are typically 1 to 2 metres deep, can be rectangular or cylindrical in cross section and are used primarily to treat surface water. The… …
5Cross-flow filtration — Diagram of cross flow filtration In chemical engineering, biochemical engineering and protein purification, crossflow filtration[1] (also known as tangential flow filtration[2 …
6Oil filter — Spin on oil filter on a Saab 9 5 An oil filter is a filter designed to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil. Oil filters are used in many different types of hydraulic machinery. A chief use of… …
7Trickling filter — A trickling filter consists of a fixed bed of rocks, gravel, slag, polyurethane foam, sphagnum peat moss, or plastic media over which sewage or other wastewater flows downward and causes a layer or film of microbial slime to grow, covering the… …
8Digital filter — A general finite impulse response filter with n stages, each with an independent delay, di, and amplification gain, ai. In electronics, computer science and mathematics, a digital filter is a system that performs mathematical operations on a… …
9Electronic filter — Electronic filters are electronic circuits which perform signal processing functions, specifically intended to remove unwanted signal components and/or enhance wanted ones. Electronic filters can be:*passive or active *analog or digital *discrete …
10Middlesex Filter Beds Weir — The natural flow continues over the head of the weir, Hackney Cut continues the navigation to the right. The island between, contains a nature reserve in the former filter beds …
