gas cleaning by filtration
11Sterilization (microbiology) — Sterilization (or sterilisation, see spelling differences) refers to any process that effectively kills or eliminates transmissible agents (such as fungi, bacteria, viruses, spore forms, etc.) from a surface, equipment, article of food or… …
12Vacuum cleaner — Cylinder vacuum cleaner for home use. French train vacuum cleaner …
13Urine — (from Latin Urina, ae, f.) is a typically sterile (in the absence of a disease condition)[1] liquid by product of the body that is secreted by the kidneys through a process called urination and excreted through the urethra. Cellular metabolism… …
14Diesel particulate filter — A diesel particulate filter (top left) in a Peugeot Off road DPF Installa …
15Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …
16Natural pool — This German swimming pond highlights how NSPs can be designed to resemble a part of the surrounding environs …
17Water purification — This article is about large scale, municipal water purification. For portable/emergency water purification, see portable water purification. For industrial water purification, see deionized water. For distilled water, see distilled water. Water… …
18Indoor air quality — (IAQ) is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. IAQ can be affected by microbial contaminants (mold, bacteria), gases (including… …
19Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… …
20Fouling — This article is about fouling in engineering. For uses of the term foul outside technology, see Foul (disambiguation). Not to be confused with fowling. Heat exchanger in a steam power plant, fouled by macro fouling …
