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Cleaning
Cleaning is the process of removing unwanted substances, such as dirt, infectious agents, and other impurities, from an object or environment. Cleaning is often performed for beauty, aesthetic, hygiene, hygienic, Function (engineering), functional, safety, or environmental protection purposes. Cleaning occurs in many different contexts, and uses many different methods. Several occupations are devoted to cleaning. Contexts Cleaning occurs in various commercial, domestic, personal, and environmental contexts, which differ in scale and requirements. * Commercial cleaning, in business or other commercial settings ** Terminal cleaning, in healthcare settings * Housekeeping, including spring cleaning * Hygiene, including personal grooming * Environmental remediation, the removal of pollution or contaminants from the natural environment Methods Cleaning is broadly achieved through mechanical action and/or chemical processes (usually solvation); many methods rely on a combination of m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Dioxide Cleaning
Carbon dioxide cleaning (CO2 cleaning) comprises a family of methods for parts cleaning and sterilization (microbiology), sterilization, using carbon dioxide in its various phase (matter), phases. Due to being non-destructive, non-abrasive, and residue-free, it is often preferred for use on delicate surfaces. CO2 cleaning has found application in the aerospace manufacturer, aerospace, automotive industry, automotive, Electronics manufacturing services, electronics, Health care industry, medical, and other industries. Carbon dioxide snow cleaning has been used to remove particles and organic residues from metals, polymers, ceramics, glasses, and other materials, and from surfaces including hard drives and lens (optics), optical surfaces. Applications cleaning has found application in many industries and technical areas, including aerospace, automotive, electronics, medical, manufacturing, basic and applied research, and optics. The different carbon dioxide cleaning methods can remo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commercial Cleaning
Commercial cleaning companies are contracted to carry out cleaning jobs in a variety of premises. Commercial cleaners, often referred to as custodians or janitors, work in many different types of buildings such as schools, banks, and offices. The main job duties include picking up trash, cleaning, and disinfecting. Cleaning techniques and equipment Commercial office cleaning companies use a wide variety of cleaning methods, chemicals, and equipment to facilitate and expedite the cleaning process. The scope of work may include all internal, general and routine cleaning - including floors, tiles, partition walls, internal walls, suspended ceilings, lighting, furniture and cleaning, window cleaning, deep cleans of sanitary conveniences and washing facilities, kitchens and dining areas, consumables and feminine hygiene facilities as well as cleaning of telephones, IT, and other periodic cleaning as required. Essentially, everything involved with a commercial business, be it cleani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dry Cleaning
Dry cleaning is any cleaning process for clothing and textiles using a solvent other than water. Clothes are instead soaked in a water-free liquid solvent (usually non-polar, as opposed to water which is a Solvent#Solvent classifications, polar solvent). Perchloroethylene (known in the industry as "perc") is the most commonly used solvent, although alternative solvents such as hydrocarbons, and decamethylcyclopentasiloxane are also used. Most natural fibers can be washed in water but some synthetics (e.g., viscose) react poorly with water and should be dry cleaned if possible. If not, this could result in changes in texture, strength, and shape. Additionally, certain specialty fabrics, including silk and rayon, may also benefit from dry cleaning to prevent damage. History The ancient Greeks and Romans had some waterless methods to clean textiles, involving the use of powdered chemicals and absorbent clay (fuller's earth). By the 1700s, the French were using turpentine-based s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wet Cleaning
Wet cleaning refers to methods of professional cleaning that, in contrast to traditional dry cleaning, avoids the use of organic solvents, the most common of which is tetrachloroethylene (commonly called perchloroethylene or "perc"). Proponents of wet cleaning state that these methods can be used without shrinking or otherwise damaging garments that typically require dry cleaning. Computer-controlled wet cleaning machines, special dryers, detergents and spot removers make wet cleaning an environmentally sound method. Wet cleaning machines have controls that allow them to safely and efficiently clean a wide variety of garments in water. Equipment, detergents and skill all contribute to successful wet cleaning. The specialized detergents and conditioner used in the wet clean process are milder than home laundry products. All of the products are disposed of down the drain and are easily handled by the local waste water treatment facility. For professional cleaners, wet-cleaning is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Housekeeping
Housekeeping is the management and routine support activities of running and maintaining an organized physical institution occupied or used by people, like a house, ship, hospital or factory, such as cleaning, tidying/organizing, cooking, shopping, and bill payment. These tasks may be performed by members of the household, or by Domestic worker, persons hired for the purpose. This is a more broad role than a cleaner, who is focused only on the cleaning aspect. The term is also used to refer to the money allocated for such use."housekeeping" ''Oxford Dictionary of English, Oxford Dictionaries Online''. Retrieved 2 June 2013. By extension, it may also refer to an office or a corporation, as well as the Housekeeping (computing), maintenance of Computer data stor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megasonic Cleaning
Megasonic cleaning is a specialized cleaning method that utilizes high-frequency sound waves to remove contaminants from delicate surfaces. It is particularly effective in industries like semiconductor manufacturing, optics, and medical device production, where precision and gentle cleaning are crucial. It is a type of acoustic cleaning related to ultrasonic cleaning. Similar to ultrasonic cleaning, megasonic cleaning uses a transducer that sits on top of a piezoelectric substrate. The transducer creates acoustic waves at a higher frequency (typically 0.8–2 MHz) than ultrasonic cleaning (20-200 kHz). As a result, the cavitation that occurs is reduced and on a much smaller scale. Comparison to ultrasonic cleaning Megasonic cleaning differs from ultrasonic cleaning in the frequency that is used to generate the acoustic waves. Ultrasonic cleaning uses lower frequencies and its mechanism relies on cavitation, while megasonic cleaning uses higher frequencies and produces less dama ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygiene
Hygiene is a set of practices performed to preserve health. According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refers to maintaining the body's cleanliness. Hygiene activities can be grouped into the following: home and everyday hygiene, personal hygiene, medical hygiene, sleep hygiene, and Food safety, food hygiene. Home and every day hygiene includes hand washing, respiratory hygiene, food hygiene at home, hygiene in the kitchen, hygiene in the bathroom, laundry hygiene, and medical hygiene at home. And also environmental hygiene in the society to prevent all kinds of bacterias from penetrating into our homes. Many people equate hygiene with "cleanliness", but hygiene is a broad term. It includes such personal habit choices as how frequently to take a shower or bath, wash hands, trim Nail (anatomy), fingernails, and wash clothes. It also includes atte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultrasonic Cleaning
Ultrasonic cleaning is a process that uses ultrasound (usually from 20 to 40 kHz) to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with an internal volume of less than , to large industrial units with volumes approaching 1,000 litres (260 US gal). The principle of the ultrasonic cleaning machine is to convert the sound energy of the ultrasonic frequency source into mechanical vibration through the transducer. The vibration generated by the ultrasonic wave is transmitted to the cleaning liquid through the cleaning tank wall so that the micro-bubbles in the liquid in the tank can keep vibrating under the action of the sound wave, destroying and separating the dirty adsorption on the surface of the object. Depending on the object being cleaned, the process can be very rapid, completely cleaning a soiled item in minutes. In other instances, cleaning can be slower, and exceed 30 minutes. Ultrasonic cleaners are used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acoustic Cleaning
Acoustic cleaning is a maintenance method used in material-handling and storage systems that handle bulk granular or particulate materials, such as grain elevators, to remove the buildup of material on surfaces. An acoustic cleaning apparatus, usually built into the material-handling equipment, works by generating powerful, audible sound waves which shake particulates loose from surfaces, reducing the need for manual cleaning. Higher frequency sound waves are used in Ultrasonic and Megasonic cleaning History and design An acoustic cleaner consists of a sound source similar to an air horn found on trucks and trains, attached to the material-handling equipment, which directs a loud sound into the interior. It is powered by compressed air rather than electricity so there is no danger of sparking, which could set off an explosion. It consists of two parts: *The acoustic driver, usually made from solid machined stainless steel. In the driver, compressed air escaping past a di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Washing
Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces. The volume of a mechanical pressure washer is expressed in gallons or liters per minute, often designed into the pump and not variable. The pressure, expressed in pounds per square inch, Pascal (unit), pascals, or Bar (unit), bar, is designed into the pump but can be varied by adjusting the unloader valve or using specialized nozzle tips. Machines that produce pressures from 750 to 30,000 pounds per square inch, psi (5 to 200 MPa) or more are available. The terms pressure washing and power washing are used interchangeably in many scenarios, and there is some debate as to whether they are actually different processes. An industrial pressure washing surface cleaner is a tool consisting of two to four high-pressure jets on a rotating bar that swivels when water is flowing. Som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygiene
Hygiene is a set of practices performed to preserve health. According to the World Health Organization (WHO), "Hygiene refers to conditions and practices that help to maintain health and prevent the spread of diseases." Personal hygiene refers to maintaining the body's cleanliness. Hygiene activities can be grouped into the following: home and everyday hygiene, personal hygiene, medical hygiene, sleep hygiene, and Food safety, food hygiene. Home and every day hygiene includes hand washing, respiratory hygiene, food hygiene at home, hygiene in the kitchen, hygiene in the bathroom, laundry hygiene, and medical hygiene at home. And also environmental hygiene in the society to prevent all kinds of bacterias from penetrating into our homes. Many people equate hygiene with "cleanliness", but hygiene is a broad term. It includes such personal habit choices as how frequently to take a shower or bath, wash hands, trim Nail (anatomy), fingernails, and wash clothes. It also includes atte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abrasive Blasting
Sandblasting, sometimes known as abrasive blasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove surface contaminants. A pressurised fluid, typically compressed air, or a Centrifugal force, centrifugal wheel is used to propel the blasting material (often called the ''media''). The first abrasive blasting process was patented by Benjamin Chew Tilghman on 18 October 1870. There are several variants of the process, using various media; some are highly abrasive, whereas others are milder. The most abrasive are shot blasting (with metal shot (pellet), shot) and sandblasting (with sand). Moderately abrasive variants include glass bead blasting (with glass beads) and plastic media blasting (PMB) with ground-up plastic stock or walnut shells and corncobs. Some of these substances can cause anaphylactic shock to individuals allergic to the media ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
