Bacteria and viruses commonly found in drinking water
2014年7月30日 · Legionella, a bacteria found naturally in the environment — typically in water, thrives in warm waters; this bacteria in water is a health risk if aerosolized (e.g., in a shower or air conditioning system) and inhaled, resulting in a type of pneumonia known as Legionnaires disease. Enteroviruses are small viruses, such as polioviruses, echoviruses and …
Production of High-Quality Demineralized Water for Steam …
2021年8月17日 · R-OH + H 2 SiO 3 → R-HSiO 3 + H 2 O Mixed bed polisher . Most of the ions, including silica, are removed by the cation exchanger, anion exchanger and degasifier. To produce the best quality treated water, it is passed through a mixed bed polisher, which contains both R-H and R-OH resins.
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6 天之前 · Water Technology covers topics such as process water, wastewater, water reuse and produced water for industrial water and wastewater management. Find articles, videos, technology guides and digital archives on the latest trends and innovations in water technology.
Activated-sludge troubleshooting guidelines | Water Technology
2014年6月18日 · Abounding remedies. Excess organic load can be remedied by reducing the waste-activated sludge (WAS) rate by an amount less than 10% per day, to return to proper loading parameters and increase the returned activated sludge (RAS) rates.
The basics of activated carbon adsorption | Water Technology
2016年2月1日 · Physical phenomena. Because of its rare characteristics, activated carbon possesses an exceptional ability to capture water-dissolved contaminants that include taste-, odor-, color- and toxic-promoting species.
Troubleshooting a bladder pressure tank | Water Technology
2010年10月13日 · The pump motor cycles too often. Frequent cycling can shorten the lifespan of a pump. Because waterlogged tanks can contain stagnant water, there can be unsatisfactory coliform samples or taste and odor complaints.
Piping for water and wastewater treatment systems
2021年10月28日 · As another rough indication, based on simplified equations, the following formula can be used for the first guess: pressure drop ~ L V 2 / D where: L is the length of the pipe, D is the hydraulic diameter of the pipe, and V is the average velocity of the fluid flow (equal to the volumetric flow rate per unit cross-sectional wetted area). Typically, the velocity is …
Best practices for collecting water samples
2014年10月8日 · In order to get the most accurate results, samples need to be collected properly. While every lab may have their own set of sampling standard operating procedures (SOP), there are some common best practices for collecting samples.
5 key performance indicators in reverse osmosis operation
2015年12月22日 · The key to the success of any reverse osmosis operation is the design and attention to pretreatment equipment. Aside from multimedia filtration for the removal of suspended particles and colloidals, sodium regenerated ion exchange is occasionally used as pretreatment for RO systems.
Boiler corrosion: Mechanical and chemical methods for control
2023年5月2日 · In the condensate piping, corrosion is mainly caused by the formation of carbonic acid. When the condensate travels back to the feedwater, CO 2 (carbon dioxide) absorbs into the water and forms H 2 CO 3 (carbonic acid). With such high-purity water in the condensate, it does not take much dissolved CO 2 to lower the pH to a corrosive range. Higher makeup alkalinity …