ammonia removal wastewater Applications

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Industrial water Ammonia & Arsenic removal from water

by PuriTech Ltd     based in Herentals, BELGIUM

Nitrogen is a nutrient essential to all forms of life as a basic building block of plant and animal protein. Nevertheless, too much of it can be toxic. The processes used for the removal of ammonium ions from drinking waters include ion exchange. PuriTech`s ION-IX system can be broken up into 4 distinctive zones with each zone operating continuously. The resin is initially loaded with the Ammonia ions (and partially calcium and magnesium)in the adsorption zone. As the ION-IX multi-port valve rotates, the resin that has been saturated with Ammonia ions (and some calcium and magnesium ions)moves into a one-bed displacement zone with softened water to ensure hard water does not cause precipitation within the multi port valve.

Applications and Air Pollutants Removed for Wastewater Treatment Operations

by Bionomic Industries Inc.     based in Mahwah, NEW JERSEY (USA)

For industrial and municipal treatment plants; Chemical scrubbers, biological towers and adsorption systems to remove hydrogen sulfide, mercaptans, other organic sulfur compounds and ammonia from digesters, pump stations, ponds, grit and screening works, sludge filter presses and dryers. Special Wet Electrostatic Precipitator for sewage sludge incinerators. Stripping ammonia and other volatile compounds. Decarbonization removal of carbon dioxide from wastewater.

Water Treatment Solutions for Nitrate Removal

by Adedge Water Technologies, LLC     based in Buford, GEORGIA (US) (USA)

Most nitrogenous materials in natural waters tend to be converted to nitrate, so all sources of combined nitrogen, particularly organic nitrogen and ammonia, should be considered as potential nitrate sources. Primary sources of organic nitrates include human sewage and livestock manure, especially from feedlots. The primary inorganic nitrates which may contaminate drinking water are potassium nitrate and ammonium nitrate both of which are widely used as fertilizers. According to the Toxics Release Inventory, releases to water and land totaled over 112 million pounds from 1991 through 1993.

Applications and Air Pollutants Removed in Wastewater Treatment Operations

by Bionomic Industries Inc.     based in Mahwah, NEW JERSEY (USA)

Removing hydrogen sulfide, mercaptans and other organosulfur compounds from wastewater treatment plant odor causing processes and areas. Stripping of ammonia and other VOC compounds.

Industrial wastewater treatment for industries

by MIOX Corporation     based in Albuquerque, NEW MEXICO (USA)

MIOX is the lowest cost supplier of chlorine for disinfection and oxidation of wastewater prior to discharge. Mixed Oxidant Solution (MOS) chemistry is more effective at biofilm control, Biochemical and Chemical oxygen demand removal (BOD/COD), breakpoint chlorination of ammonia and hydrogen sulfide (H2S) removal.

Wastewater Treatment for Aquaculture

by AnoxKaldnes AB - a Veolia Water Company     based in Lund, SWEDEN

Wastewater treatment for aquaculture will typically consist of processes for removal of major pollutants such as organic matter, suspended solids, ammonia nitrogen, dissolved gases and bacteria/virus. Typical unit processes may include: Biological treatment Solids removal Disinfection

Odor Scrubbers Applications with Hydrogen Peroxide

by USP Technologies     based in Atlanta, GEORGIA (US) (USA)

Hydrogen Peroxide as a Replacement for Sodium Hypochlorite Hydrogen peroxide may be used in both mist scrubbers and packed tower scrubbers as a replacement for sodium hypochlorite (bleach). Like bleach, the process involves two concurrent mechanisms: 1) absorption of the odors (H2S) into the alkaline scrubbing solution; and 2) oxidation of the absorbed sulfide in solution. Step 1: H2S + NaOH → NaSH + H2O Step 2: 4H2O2 + H2S → H2SO4 + 4H2O Typical dose ratios are 5 parts H2O2 per part H2S or, when used in place of bleach, one gallon 50% H2O2 for every 10 gallons of 15% sodium hypochlorite (NaOCl). This generally translates into a break-even cost scenario. Sufficient caustic soda (NaOH) is added to maintain a pH of 10.0 - 10.5 in the scrubbing solution. There is also in practice a process which uses H2O2 in series with bleach to scrub composting odors. This process relies on a series of three packed tower scrubbers: the first is a pH neutral water wash (to remove ammonia and amine odors); the second uses a conventional caustic/bleach solution in which the bleach is purposely overdosed (to oxidize the complex organic sulfur odors); and the third uses a caustic/H2O2 solution (to remove the unreacted chlorine vapors carried over from the second stage). H2O2 + HOCl → HCl + H2O + O2 Typical dose ratios are 0.5 parts H2O2 per part hypochlorite (OCl-), with sufficient caustic soda (NaOH) added to maintain a pH of 8.5 in the scrubbing solution.

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