Method and system for controlling coagulant filling rate by on-line measuring flocculate sedimentation speed
A technology of sedimentation speed and coagulant, which is applied in the direction of control/regulation system, chemical variable control, non-electric variable control, etc., can solve the problems of slow sedimentation speed, can not reflect the lightness of flocs, and low cost, and achieve Improved program design, direct detection, and stable online detection effects
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[0034] A preferred implementation of the present invention is detailed as follows with reference to the drawings:
[0035] The method of controlling the coagulant filling amount by measuring the floc precipitation speed online is introduced as follows.
[0036] 1. The raw water enters the mixing reaction tank, mixes, reacts, and flocculates with the added coagulant to produce flocs. In this method, the moving images of the flocs are collected in real time through the floc image acquisition sensor underwater at the end of the mixing reaction tank.
[0037] 2. The sensor head contains a specially designed underwater water flow guide and deceleration mechanism to make the water flow slow, stable (flocs will not be broken), horizontally (without vertical water flow component) through the sampling window in the sensor head.
[0038] 3. The area of the sampling window is about 30*20mm and the thickness is 3mm to prevent the flocs from overlapping in the plane image; the horizontal spe...
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