When the water is used in dissolving CO2, it becomes acidic as it forms H2CO3. Its pH increases and the water quality changes. If the pH of the water is near neutral, it can not be said to be contaminated. If it is proposed to reuse it can be done so after neutralization.
Another method as suggested by AWWA is aeration. The relative amounts of the volatile substances contained in air and water and their concentration in water with respect to their saturation value are factors that control the rate at which interchange takes place. Substances that occur in water in amounts less than or in excess of their saturation values are changed in concentration by aeration with saturation value the of change for both conditions. The substances involved in the aeration must be volatile. Oxygen, carbon dioxide etc are volatile and therefore aeration can be employed.
If reduction of carbon dioxide is no more than 4 to 8 mg/L , it may be more economical to discontinue the use of aeration.
When the water is used in dissolving CO2, it becomes acidic as it forms H2CO3. Its pH increases and the water quality changes. If the pH of the water is near neutral, it can not be said to be contaminated. If it is proposed to reuse it can be done so after neutralization.
Another method as suggested by AWWA is aeration. The relative amounts of the volatile substances contained in air and water and their concentration in water with respect to their saturation value are factors that control the rate at which interchange takes place. Substances that occur in water in amounts less than or in excess of their saturation values are changed in concentration by aeration with saturation value the of change for both conditions. The substances involved in the aeration must be volatile. Oxygen, carbon dioxide etc are volatile and therefore aeration can be employed.
If reduction of carbon dioxide is no more than 4 to 8 mg/L , it may be more economical to discontinue the use of aeration.
The water quality changes while the water becomes slightly acidic thereby becomes unconsumable .Thanks
water may not be fit for consumptio, agree with abov excellent knowledge shared by Prof Sheth, Prof Mutasem and others
Carbon dioxide can dissolve in water, creating a very weak acid (H2CO3) The water quality changes ,where the water becomes slightly acidic thereby becomes nonconsumable .
It can be reused after aeration. Thanks.Dr Sheth and Dr Mustasem have very nicely explained.
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