Bacteria and viruses commonly found in drinking water
Jul 30, 2014 — 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 …
Best practices for collecting water samples
Oct 8, 2014 — A good way to determine if you have run the water enough is to use onsite measurements like pH, temperature and conductivity. Take measurements every two to three minutes, and once you get three consistent measurements in a row, you are ready to collect samples. Once you have allowed sufficient water to flow, you are ready to collect samples.
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Water Technology provides water treatment professionals with news and information on industrial water and wastewater management topics including treatment, monitoring, storage, disposal and reuse.
Production of High-Quality Demineralized Water for Steam …
Aug 17, 2021 — A demineralized water facility produces process water and boiler feed water for use in steam generation by boilers. It also returns steam condensate from plants and pretreats it. A demineralized water facility consists of the following: • Demineralized raw water tanks and raw demineralized water pumps.
The basics of activated carbon adsorption | Water Technology
Feb 1, 2016 — Activated carbon removes water soluble organics and solids from water by backwashing. This MTZ has three working zones: Zone 1 (between A and B, a portion of the total length of the carbon bed) is completely used and no longer removes water-soluble contaminants. Zone 2 (between B and C) removes variable amounts of contaminants.
Activated-sludge troubleshooting guidelines | Water Technology
Jun 18, 2014 — To solve a problem using guidelines and procedures: 1) identify the problem, 2) determine the most likely cause and 3) consider suggested remedies or corrective measures. In identifying a problem, visual observation of the treatment process is essential and settle-ability tests are vital. Settling-test observations lead to appropriate remedies ...
Microorganisms in activated sludge | Water Technology
Jun 23, 2014 — Dan Theobald. In the activated sludge process, microorganisms are mixed with wastewater. The microorganisms come in contact with the biodegradable materials in the wastewater and consume them as food. In addition, the bacteria develop a sticky layer of slime around the cell wall that enables them to clump together to form bio-solids or sludge ...
Piping for water and wastewater treatment systems
Oct 28, 2021 — Piping is an important part of modern water and wastewater treatment systems, water pumping units, desalination units, cooling water systems and others. Piping systems are like veins of modern plants. The piping is used to carry water, wastewater, chemicals and mixtures from one location to another. The design, construction, operation and ...
What are the parameters of an extended aeration ... - Water …
Oct 1, 2013 — Plants operating within an extended-aeration range are usually small and without 24-hour-per-day operator attendance. They ordinarily operate within a mean cell residence time (MCRT) in a range of 20-40 days and a food/microorganism (F/M) ratio between 0.05-0.15 lbs. MCRT is the average time a microorganism will spend in the activated sludge ...
5 key performance indicators in reverse osmosis operation
Dec 22, 2015 — The five most important parameters in reverse osmosis are the silt density index (SDI), differential pressure, normalized permeate flow, percent rejection and pressure drop coefficient. Reverse osmosis (RO) is a process that forces a feedwater stream containing dissolved impurities (salts and organics) through a semipermeable membrane into two ...