hedp- waste water treatment chemical dequest 2010 at germany

hedp- waste water treatment chemical dequest 2010 at germany
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  • What is the elimination rate of HEDP in unspiked wastewater?
  • In a recent Chinese study, elimination rates of 98.2–99.4% in three WWTPs were reported for HEDP in the trace-concentration range of unspiked wastewater . The authors stated that two of the WWTPs were operated with the coagulation process.
  • How many Phosphonates are used in wastewater treatment plants?
  • Ten times at intervals of 1–2 months, individual treatment stages of two wastewater treatment plants (WWTPs) were analyzed for the five quantitatively most widely used phosphonates. The total dissolved concentration of the investigated phosphonates in the influents was between 131 µg/L and 384 µg/L.
  • What is dequest&reg P9300 used for?
  • acid) or ATMP. Grades based on 1-Hydroxyethylidene 1, 1-Diphosphonic acid or HEDP. industrial cooling water treatment. phosphonic acid) or EDTMP. cooling water treatment performance. And is excellent calcium phosphate scales. DEQUEST® P9300 finds its use as a water treatment applications. 3 What are DEQUEST® P polymers?
  • Does missing P precipitation affect HEDP elimination in European WWTPs?
  • The elimination of HEDP in European WWTPs has been previously investigated in two field studies involving spiking of the influent. In these studies, the elimination significantly differed (25–70% and >90% ). Possibly, the relatively low HEDP elimination found by Metzner could be ascribed to missing P precipitation.