[Papermaking] OHR’s unique aeration in white water storage tanks reduces problems in paper mills
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OHR’s unique aeration in white water* storage tanks reduces problems in the papermaking process
We have learned that using OHR’s unique aeration in white water tanks at paper mills produces many benefits as follows:
We have proven results from six factories.
Advantage 1: The ORP value (oxidation-reduction potential value) rises considerably and hydrogen sulfide gas is not generated.
Advantage 2: The additive amount of biocides to control growth of microorganisms can be reduced by 30 – 50%.
Advantage 3: The production of organic acid drastically decreases, so pitch problems in the paper making process are reduced.
Advantage 4: Strengthening additive agents and the load of wastewater treatment can be reduced.
When white water becomes anaerobic, the starch in the paper strengthening agents is decomposed and the concentration decreases. Hence the bursting strength of paper decreases greatly. However the white water is kept in the aerobic environment by OHR unique aeration method and the following three benefits are obtained.
- Most of the added paper strengthening agents remain in the paper without decomposing. The agents are effectively used without loss.
So it is possible to reduce the additive agents. - The paper strengthening additive agents can be reduced, therefore the agents flowing out into the wastewater also decrease.
As a result the load of the wastewater treatment is reduced.. - The amount of decomposed paper strengthening agents can be reduced so the decomposed agents flowing out into the wastewater also decreases and the load of the wastewater treatment is reduced.