Coal mud water clarifying and controlling method based on water quality adjustment
A control method, the technology of slime water, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high cost of chemicals, difficulty in finding indicators of the state of slime water, and large consumption of chemicals, so as to improve the quality and efficiency of coal preparation, Avoid deterioration and drug poisoning, reduce the effect of loss and waste
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example 1
[0022] 1. Detect the feed concentration and water hardness of the slime water at the feed inlet of a coal preparation plant. The measured feed concentration is 80g / l, and the total hardness is 5 German degrees. It is determined that the slime water is difficult to settle;
[0023] 2. Use mineral coagulant as water quality regulator. Before the concentrator, add the dissolved and dispersed mineral coagulant into the slime water feeding pipe, and mix the mineral coagulant with the slime water evenly through the dynamic mixer, monitor the water hardness value of the coal slime water in real time and control the mineral coagulation Adjust the amount of additive to adjust the water quality until the total hardness of the slime water is greater than 50 German degrees, so that the difficult-to-sink slime water becomes easy-to-sink slime water.
[0024] 3. Measure the hardness and concentration of the slime water at the overflow water of the concentrator. The total hardness measured i...
example 2
[0026] 1. Detect the feed concentration and water hardness of the slime water at the feed inlet of a coal preparation plant. The measured feed concentration is 50g / l, and the total hardness is 30 German degrees. It is determined that the slime water is moderately settled slime water .
[0027] 2. Select soluble calcium salt as water quality regulator. Add the dissolved and dispersed calcium salt solution into the coal slime water feeding pipe before the concentrator, and mix the calcium salt solution with the coal slime water evenly through the dynamic mixer, monitor the water quality hardness value of the coal slime water in real time and control the addition of the calcium salt solution Adjust the water quality until the total hardness of the slime water is greater than 50 German degrees. Make moderate sedimentation slime water into easy sedimentation slime water.
[0028] 3. Measure the hardness and concentration of the slime water at the overflow water of the thickener. ...
example 3
[0030] 1. Detect the feed concentration and water hardness of the slime water at the feed inlet of a coal preparation plant. The measured feed concentration is 30g / l, and the total hardness is 45 German degrees. It is determined that the slime water is moderately settled slime water .
[0031] 2. Since there are high-hardness and low-concentration wastewater sources near the coal preparation plant, high-hardness and low-concentration wastewater can be used as a water quality regulator, and it can be introduced into the place where the water flow is fast before the thickener and is conducive to strong mixing. Real-time monitoring of slime water water hardness value.
[0032] 3. Measure the hardness and concentration of the slime water at the overflow water of the concentrator. The total hardness measured is 55 German degrees, which meets the condition of easy-settling slime water; the measured concentration is 8g / l, which does not meet the conditions for washing coal with clean...
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