Certified to ISO9001:2008
Home     About Us     Products & Systems     Projects      Downloads     News     Contact Us
  Products and Systems
Skip Navigation Links.
  Get in Touch...
Napier-Reid Ltd. 
10 Alden Road, Unit 2,
Markham, Ontario L3R2S1,
Tel: (905) 475 1545
Fax: (905) 475 2021
Home> Water Products> Chemical Dosing
Chemical Dosing

Several water and wastewater treatment process require a chemical feed and metering system for numerous applications such as flocculation, coagulation, disinfection and alkalinization. These chemicals can be in a gaseous, liquid or dry state. The chemical feed and metering systems should be designed according to the state and type of chemical. The following chart briefly presents the basic equipment for gas, dry and liquid chemical feed:

Chemical Phase Standard Dosing Equipment
Gaseous -Inlet pressure reducing valve, rotameter, metering control orifice and vacuum differential regulating valve
Dry -Gravimetric(Belt-Type or Loss-in-weight) or Volumetric feeder
Liquid -Positive displacement pumps, centrifugal pumps, dipper-wheel feeders and eductors

All metering pumps and valves should be carefully selected. Moreover, a good piping selection and design is critical in order to avoid corrosion problems and/or leakage. With over 3000 projects executed worldwide, let Napier-Reid be your single solution for water and wastewater treatment.


Chemical Dosing

Home     About Us      Products & Systems      Projects      Downloads      News      Terms of Use      Contact Us
Designed by: CyberSam Software Solutions. ©Copyright 2009, All Rights Reserved. Best view 1024 x 768 rsolution in IE4.0+