Activated-sludge troubleshooting guidelines | Water Technology
WEBJun 19, 2014 · Be assured of one thing, for any given observation, challenge or problem, probable causes exist, as well as suggested remedies and corrective measures. To solve …
Bacteria and viruses commonly found in drinking water
WEBJul 31, 2014 · Both bacteria and viruses are microorganisms regulated by EPA’s Maximum Contaminant Levels (MCLs) criteria. Viruses are the smallest form of microorganisms capable of causing disease, particularly those of a fecal origin infectious to humans by waterborne transmission; bacteria are typically single-celled microorganisms that can also cause health problems in humans, animals or plants ...
Production of High-Quality Demineralized Water for Steam …
WEBAug 17, 2021 · 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.
Best practices for collecting water samples
WEBOct 9, 2014 · Marianne R. Metzger currently works for Certified National Analytics (CNA) Environmental, New Jersey Analytical Labs, Smith Environmental, International Hydronics and TestMyWater.info, providing various testing services for residential, commercial and government regulations.
The basics of activated carbon adsorption | Water Technology
WEBFeb 1, 2016 · Figure 2. A horizontal bed configuration looks like this, whereas vertical beds take advantage of gravity flow. Mass transfer zone. Aqueous and gas phase applications develop a moving contaminant mass transport zone (MTZ) as more contaminated water or gas passes through a bed.
5 key performance indicators in reverse osmosis operation
WEBDec 22, 2015 · Reverse osmosis (RO) is a process that forces a feedwater stream containing dissolved impurities (salts and organics) through a semipermeable membrane into two separate streams: one of removed solids (concentrate or reject) and one of purified water, producing soft permeate water.
Back To Basics: Mechanical Seals for Water and Wastewater Pumps
WEBJul 1, 2011 · Main elements of a mechanical seals. All mechanical seals are constructed with the following basic sets of parts: A set of (very flat) machined and lapped primary sealing faces: The very close (near) contact between these two flat mating surfaces, which are perpendicular to the shaft, minimizes leakage.
Microorganisms in activated sludge | Water Technology
WEBJun 24, 2014 · 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...
Troubleshooting a bladder pressure tank | Water Technology
WEBOct 13, 2010 · A bladder pressure tank contains pressurized air and water separated by a flexible membrane (bladder). These tanks are typically precharged with air at the factory.
What are the parameters of an extended aeration ... - Water …
WEBOct 1, 2013 · The activated sludge process is the most widely used biological water and wastewater treatment. As is well known, by its means, suspended-growth microorganisms are applied to breakdown wastes.