Method for suppressing sedimentation of suspended substance, method for suppressing pitch trouble, and method for detecting sedimentation of suspended substance
AssigneeKurita Water Industries Ltd.
InventorHiroki KATSURA
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Abstract
A method for suppressing sedimentation of suspended substances ef the present invention is a method for suppressing sedimentation of suspended substances in water at the bottom of a tank disposed in a water system in papermaking equipment, comprising a step of blowing an oxygen-containing gas into the water, for stirring and aeration; a step of detecting a change with time in existence states of the suspended substances in the tank by the stirring and the aeration; and a control step of feeding at least one of an oxygen-containing gas and a slime control agent to the tank based on the detection result to suppress the sedimentation of the suspended substances in the tank.
Claims5
A method for suppressing sedimentation of suspended substances, wherein the method is for suppressing sedimentation of suspended substances in water at a bottom of a tank disposed in a water system in papermaking equipment, the method comprising:
- an aeration step of blowing an oxygen-containing gas into water which exists in the tank, for stirring and aeration;
- a detection step of detecting a change with time in existence states of suspended substances which exist in the water in the tank by the stirring and the aeration;
- and
- a control step of feeding at least one of an oxygen-containing gas and a slime control agent to the tank based on a detection result in the detection step during operation of the papermaking equipment to suppress sedimentation of the suspended substances in the tank.
A method for suppressing pitch trouble, wherein the method is for suppressing production of pitch from a tank disposed in a water system in papermaking equipment, the method comprising:
- an aeration step of blowing an oxygen-containing gas into water which exists in the tank, for stirring and aeration;
- a detection step of detecting a change with time in existence states of suspended substances which exist in the water in the tank by the stirring and the aeration;
- and
- a control step of feeding at least one of an oxygen-containing gas and a pitch control agent to the tank based on a detection result in the detection step during operation of the papermaking equipment to suppress production of pitch in the tank.
A method for detecting sedimentation of suspended substances, wherein the method is for detecting sedimentation of suspended substances in water at a bottom of a tank disposed in a water system in papermaking equipment, the method comprising:
- an aeration step of blowing an oxygen-containing gas into water which exists in the tank, for stirring and aeration;
- and
- a detection step of detecting a change with time in existence states of suspended substances which exist in the water in the tank by the stirring and the aeration.
Dependencies are inferred from the claim text.