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 Reuse of reclaimed water
Detailed Introduction
1. Meaning of reuse of reclaimed water
With the tightness of water resource and the raise of water price, reuse of reclaimed water has been paid more and more attention. It not only meets national energy conservation and emission reduction policy, but also fits the demand of enterprise sustainable development. It saves production water as well as reduces waster water emission. It has both economical benefit and environmental and social benefit.
2. There are 3 methods for the reuse of reclaimed water
①film filtration method; ②large aperture resin adsorption method; ③charcoal & ozone oxidation style
First two methods need large investment and high cost and have concentrate water re-treatment problem. Method 3 is more reasonable and deserves of wide promotion.
3. Economic benefit analysis
For the use of 1m3 reclaimed water，1m3 tap water would be saved, 1m3 waster water will be less discharged. Taking Changzhou region as example, the water price is 2.87Yuan/m3. once 1m3 reclaimed water is used, RMB 6.03 Yuan will be saved. If 1200 m3 reclaimed was used each day, RMB 2630000 Yuan will be saved in one year.
4. Technological features:
charcoal & ozone oxidation style
1. Low invest(about 1500 Yuan/ton)
2. Low cost(0.84 Yuan/m3)
3. Fine effluent quality(PH: 6.5-8.5, turbidity 5, CODcr≤50mg/l)
4. High water reuse rate（over 60%）
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