manganese treatment Articles

  • Properties and Behavior of Inorganics in Contaminated Soil

    Often, specific technologies may be ruled out, or the list of potential technologies may be immediately narrowed, on the basis of the presence or absence of one or more of the chemical groups. The relative amounts of each may tend to favor certain technologies. Metals may be found in the elemental form, but more often they are found as salts mixed in the soil. At the present time, treatment ...

  • Data normalization identifies performance issues - Case Study

    Introduction The Municipal RO Plant had been in operation for almost 18 years, producing ~290 gpm of permeate water for a city in Iowa, USA. It was one of the first RO plants in the state and the upper mid-west. In May 2008, city operators complained about a loss in system production. In response, the City contracted an RO membrane service provider to perform a cleaning regimen that produced ...


    By Avista Technologies

  • Introduction to Ion Exchange Part 1

    IMPURITIES IN WATERWater is often referred to as the 'universal solvent' as it will dissolve small amounts of everything it touches. Water collects or dissolves a variety of mineral salts, organic compounds and suspended solids as it flows over the earth's surface and through the ground. These impurities make water undesirable for use in many applications. It is, therefore, important to ...


  • In-depth analysis of changes restores system optimization - Case Study

    Introduction A reverse osmosis plant (BWRO) had been operating effectively applying Avista antiscalant and cleaners for about a year. Increased product water demand led to changes in the feed water quality and an increase in plant recovery resulting in an increase in stress on the pre-treatment system and more rapid membrane fouling. The existing membrane cleaning regime was reviewed to try ...


    By Avista Technologies

  • New ways for Metal Recycling

    REWAVE XRF 3-way-sorting in innovative  “Free-Fall”-design Recycling of metal and aluminium knows no limits because it can be remelted as scrap indefinitely. Metals, however have to be separated from non-metallic impurities, and different metals have to be sorted in pure fractions to be used as secondary raw materials substituting primary resources. Especially when it ...

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