Dm demin demineralized water plant
Demineralized Water Overview
Demineralized or desalinated water is achieved by removing impurities such as suspended solids, colloids, and inorganic ions through various water treatment processes. However, desalination does not necessarily eliminate all salts; it often leaves trace impurities depending on the application. The goal is to reduce mineral content as much as possible. Demineralized water typically contains little or no minerals and can be produced via distillation, reverse osmosis, ion exchange, or a combination of these methods.
Lon Exchange Method
The ion exchange method involves passing salt-containing water through a column filled with exchange resin. This process removes calcium and magnesium ions, leaving behind desalted water. The benefits of this method include strong ion removal capability and high purity. However, it cannot remove non-dielectrics like organic matter, and trace amounts of exchange resin may dissolve into the water.
Demineralized Water Plant Process Flow
Option A:
Source water tank → Sand filter → Carbon filter → Cationic resin → Anionic resin → DM water tank
Option B:
Source water tank → Sand filter → Carbon filter → Cationic resin → Anionic resin → Middle water tank → Cation & Anion mixed bed filter → DM tank
Demineralized Water Plant Buying Guide
To select the most suitable DM water plant, please provide the following information:
1. Feed Water TDS (Total Dissolved Solids): Is the source water from a borehole, lake, or seawater? This information is crucial for determining the appropriate process.
2. Product Water Flow Rate:Specify the flow rate in m³/hr, m³/day, liters/hr, GPM, GPD, etc
3. Purpose of Product Water:Is it for meeting WHO drinking water standards, industrial processes, or other uses?
4. Pre-treatment Requirements:Ensure iron and manganese are removed before water enters the DM plant. Also, TSS (Total Suspended Solids) must be removed beforehand.
5. SDI (Silt Density Index):Ensure SDI is less than 3.