Amino-functionalized regenerated glass filter material for water treatment and its preparation and application
A technology of amino functionalization and water treatment, applied in filtration and separation, membrane filters, chemical instruments and methods, etc., can solve the problems of low activity, low removal rate, and difficult guarantee of improvement, and achieve broad prospects and improve effluent water quality Effect
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Embodiment 1
[0028] (1) Raw material preparation: crush waste glass raw materials (waste beer bottles collected in residential areas), sieve and take glass scraps with a particle size of 0.8-1.2 mm for later use;
[0029] (2) Surface hydroxylation: Soak the broken glass in alkaline soapy water for 5 minutes, then rinse it with deionized water, then immerse the glass filter in 98% concentrated sulfuric acid, then add 30 % concentration of hydrogen peroxide, the volume ratio of concentrated sulfuric acid and hydrogen peroxide is 7:3, after adding hydrogen peroxide, cook in a water bath at 80°C for 50 minutes, then take out the glass scraps and wash them with a large amount of deionized water and ethanol, and then rinse them at 80°C Dry for 24 hours;
[0030] (3) Amino functionalization: soak the glass cullet after the treatment in step (2) with 3-aminopropyltriethoxysilane water-ethanol solution with a volume concentration of 5%, and follow the deionized water: APTES solution ratio of 3:100 ...
Embodiment 2
[0032] The amino-functionalized regenerated glass filter material prepared in Example 1 was loaded into the filter device, and the traditional quartz sand filter material was used as a comparison, and a laser particle analyzer was used to count the particles in the water body.
[0033] The influent water sample is the water sample diluted with tap water from the raw water of the Shangtang River and Zhejiang University of Technology in Hangzhou. The turbidity of the influent water is 2NTU, the height of the filter layer is 1m, and the flow rate of the filter column is 60L / h. In order to prevent the sensor of the laser particle analyzer from clogging, the measured water sample automatically intercepts large particles with a particle size of 180um or more. Due to the limitation of the measurement principle, extremely small particles with a particle size of less than 2um in the water body cannot be detected. All the data only examine the particle size range from 2um to 180um.
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Embodiment 3
[0037] Influent turbidity has been improved to 5NTU from 2NTU, and other test conditions are with embodiment 2, influent water quality, and effluent water quality is in Figure 4 Reflected in the removal rate response in Figure 5 middle. It can be seen that amino-functional glass still has an advantage over traditional quartz sand in the removal of fine particles. In fact, the water body in the water purification process of the water plant needs to go through coagulation first, and then enter the filter column in the sedimentation stage. The turbidity of the water entering the filter column Generally, it will not be higher than 2NTU, so the application of this amino functional glass filter material in the filtration process of water plants has a huge advantage compared with quartz sand, and because the production raw materials come from waste utilization, it not only conforms to the concept of energy saving and environmental protection in today's society, but also improves T...
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