How to have ozone to disinfect water, especially drinking water?
Nowadays, we all know that ozone, which can replace CLO2, CL2, UV, is a kind of green disinfectant, but not few people exactly know how to have ozone to disinfect and sterilize? Today, I share some experience about ozone application in water treatment, especially ozone disinfection for drinking water
Firstly, we need to know that it is by CO3 and contact time in water to control disinfection effect when we have ozone disinfect water (CO3 is concentration of ozone), like 0.4ppm, 4 mins contact time for drinking water disinfection is enough
1, How to figure out what O3 production of industrial ozone machine is need for disinfection system? we know that
decay rate of hour ozone in water 61%
mixing efficiency of ozone in water around 50% (when we have verturi jet to mixing water and ozone by 0.8 mpa)
working efficiency of ozone machine around 75%
Now, suppose that our water flow per hour is 100m3, and (ozone disinfection concentration) CO3 is 2 PPM (2g/m3), now according to the following formula to figure out production of ozone machine we need
Production of ozone machine =100m3 x 2g/m3 / <(1-61%) x 50% x 75%>=1367.52g
So, we know that for the ozone disinfection system, you need to 1.5kgs/hr ozone generator.
2, what is the most important 4 aspects for ozone water mixing system?, when we have ozone in water to disinfect
A, ozone generator's working efficiency
B, ozone generator's CO3 (concentration of ozone)
C, accuracy of gas flowmeter
D, PLC performance (Programmable Logic Controller), like time to reach CO3
Lastly, I leave 1 questions for you to learn about ozone.
Why 1PPM ozone in air is 2.144mg/m3, while 1ppm ozone in water is 1.0mg/L(1.0g/m3)