Method for testing influence of flocculation time on flocculation performance of cationic flocculant

A cationic flocculant and flocculation technology, applied in the direction of transmittance measurement, etc., can solve the problems of water price and water resources waste, unreasonable industrial structure, improper management of water resources development, etc., and achieve the effect of short test time and simple test steps

Inactive Publication Date: 2012-05-23
李波
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Problems solved by technology

In addition, irrational industrial structure, improper management of water resource d

Method used

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  • Method for testing influence of flocculation time on flocculation performance of cationic flocculant
  • Method for testing influence of flocculation time on flocculation performance of cationic flocculant

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Embodiment

[0031] The present invention relates to a method for testing the influence of flocculation time on the flocculation performance of cationic flocculants, the specific steps of which are as follows:

[0032] (a) Prepare cationic flocculant for subsequent use;

[0033] (b) preparing sodium-based bentonite suspension as a simulated water sample;

[0034] (c) Take simulated water samples and place them in reaction vessels respectively, and add flocculants to the reaction vessels;

[0035] (d) All reaction vessels are vibrated back and forth, and left to settle for different times;

[0036] (e) Measure the light transmittance of the liquid in the reaction container respectively, and analyze the influence of the flocculation time on the flocculation performance through the measured light transmittance.

[0037] In the step (a), the cationic flocculant is a starch-dimethyldiallylammonium chloride-acrylamide ternary graft copolymer.

[0038] In the step (b), the concentration of the...

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Abstract

The invention discloses a method for testing the influence of flocculation time on the flocculation performance of a cationic flocculant. The method for testing the influence of the flocculation time on the flocculation performance of the cationic flocculant comprises the following steps of: preparing the cationic flocculant; preparing sodium-based bentonite suspensions with different pH values as simulation water samples; taking the simulation water samples with different pH values, respectively placing the simulation water samples in a reaction vessel and adding the flocculant with same amount as that of each simulation water sample; and respectively measuring transmittances of liquids in the reaction vessel, and further analyzing the influence of the pH value on the flocculation performance, and the like. According to the invention, by changing different flocculation time, the flocculation performance of the cationic flocculant can be measured respectively, and the influence of the flocculation time on the flocculation performance of the cationic flocculant is further analyzed; and the method disclosed by the invention has the advantages of simple test steps and short test time and provides references for application of the cationic flocculant to wastewater treatment.

Description

technical field [0001] The invention relates to a method for testing the influence of flocculation time on the flocculation performance of cationic flocculants. Background technique [0002] my country is one of the countries with severe water shortage in the world, and the total amount of water resources in my country ranks fourth in the world, but according to the population statistics in 2002, the per capita water resources are 2220m 3 , only 1 / 4 of the world's per capita water resources, equivalent to 1 / 4 of the United States, 1 / 2 of Japan, and 1 / 44 of Canada, ranking 110th in the world. Moreover, the temporal and spatial distribution of water resources is extremely uneven, that is, there is more water in the south, less water in the north, more water in summer, and less water in winter, resulting in a situation of flooding in the south and drought in the north. The water resources in the south of the Yangtze River Basin account for more than 80% of the country's water ...

Claims

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Application Information

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IPC IPC(8): G01N21/59
Inventor 李波
Owner 李波
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