Water treatment plant (WTP) is necessary for every wet processing industry. In case of textile wet processing; water is required for dyeing, printing, finishing as well as garment washing. We know water is two types; hard water and soft water. The water which is collected from up of the soil or under the soil it may contains different chemical substances which makes the water hard. That hard water is not suitable for the wet processing. For this reason, it is required to purify the hard water. After purification by the water treatment plant, water becomes ready for the next wet process.
Process Flow Chart of Water Treatment Plant (WTP): The flow chart for water treatment plant is given below.
Hard Water Store Tank
↓
Stone Filter
↓
Carbon Filter
↓
Resin Filter
↓
Soft Water Store Tank
↓
Delivery Pump
Water Softening: There is an ion exchange method by which hardness of water is removed. After removing the hardness, water becomes soft and following parameters are maintained for considering a soft water. Here, I have present the standard for soft water.
Standard Water Quality for Dye House:
Parameter | Permissible concentration |
Color | Color less |
Smell | No bad smell |
Water Hardness | <5 ppm |
PH value | 7-8 (Neutral) |
Dissolve solid | < 1 ppm |
Inorganic salt | < 500 ppm |
Iron(Fe) | < 0.1 ppm |
Manganese(Mn) | < 0.01 ppm |
Copper (Cu) | <0.005 ppm |
Nitrate(NO3) | < 50 ppm |
Nitrate(NO2) | < 5 ppm |
So, before processing, a textile engineer should ensure the quality of soft water.
why fresh & recovery caustice set point 38°&48°.supouse set point below 30°&40°so whats the effect of fabric & caustic gpl
Subject: Water Purification Set
Dear sir/Madam,
We have an urgent inquiry for above item. If you able to supply us than reply by return mail. So that I will send to you the specification.
Thanks & Regards,
KH. MD. TAIB
(Chief Advisor)
Mahi International
Mobile: +88-01715016135
Phone: +88-02-58153548
Fax: +88-02-8125652
E-mail: mahi.international.bd@gmail.com
Website: www.tanvirmahi.com
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