Online detecting method for water treating flocuclation effect particle counting dimension
A detection method and particle counting technology, applied in individual particle analysis, particle and sedimentation analysis, measurement devices, etc., can solve the problems of inability to accurately reflect the dynamic change process of flocs in water, narrow adaptation range, long lag time, etc. The effect of backwash cycle and filter life, increase water production rate, and enhance dynamic characteristics
Inactive Publication Date: 2006-08-23
HARBIN INST OF TECH
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[0003] The purpose of the present invention is to solve the problems that conventional water treatment flocculation effect detection methods cannot accurately reflect the dynamic change process of flocs in water, long lag time, narrow adaptability, etc., and provide a water treatment flocculation effect particle counting fractal online detection method. The method breaks through the limitations of the traditional flocculation image fractal dimension detection method, and uses a particle counter to detect the flocculation reaction effect based on the true size and quantity distribution characteristics of micro-floc particles in water. This is a new concept and detection method in this field. In the process of water treatment, it can promote the optimal control of the flocculation and dosing process, which has high social and economic benefits
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[0006] Specific implementation mode one: as figure 1 As shown, the present embodiment detects the flocculation effect of water treatment online according to the following method: (1) install an online particle counter near the static mixer of the water plant; The mixed micro-flocculation water samples are continuously tested; (3) Set up the particle counter to detect 8 particle size channels online, and the particle size range values represented by each channel are: channel 0 = 2 ~ 10 μm, channel 1 = 10 ~ 20 μm , channel 2 = 20-30 μm, channel 3 = 30-40 μm, channel 4 = 40-55 μm, channel 5 = 55-70 μm, channel 6 = 70-85 μm, channel 7 = 85-100 μm; (4) take the Particle number detection value N (particle number / ml): N 0 , N 1 , N 2 , N 3 , N 4 , N 5 , N 6 , N 7 ; (5) Take the upper limit value H (μm) of the particle size range represented by each channel: H 0 =10,H 1 =20,H 2 =30,H 3 =40,H 4 =55,H 5 =70,H 6 =85,H 7 =100; (6) Take the lower limit value L (μm) of the...
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This invention relates to a grain counting typing dimension online test method for water process flocculate effect including the following steps: mounting a grain counting device in a water-plant to test particle numbers of micro-flocculate water samples of 8 channels on-line to operate according to the test value N of each channel, value D of the particle diameter and sum of the particles P to get a mean size value M then operates according to M and its standard deviation value A to get the counting typing dimension value E expressing the typing structure property of micro-flocs.
Description
technical field [0001] The invention belongs to the field of environmental protection and relates to a water treatment detection method. Background technique [0002] In the process of water treatment production, the degree of perfection of particle flocculation directly affects the treatment effect of subsequent treatment such as sedimentation, filtration and other process units. Because flocculation is a gray box system with large lag, traditional modeling methods often cannot obtain timely and accurate quantitative information on the flocculation process. The flowing current detection technology that has been developed and widely used is only suitable for conventional electrolytic coagulants, and cannot be directly used for the detection of the flocculation process of adding non-electrolyte polymer flocculants. The light transmittance pulsation detection technology that appeared at the end of the 1980s can detect the particle size change of particulate matter in water on...
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Inventor 南军
Owner HARBIN INST OF TECH