Calcination-free zeolite filter material activated by hydrochloric acid and preparation method thereof
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A technology for activating zeolite and hydrochloric acid, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as poor connectivity of pore channels, and achieve the effects of large pores, stable chemical properties, and many pores
Inactive Publication Date: 2009-10-21
UNIV OF JINAN
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Problems solved by technology
However, due to the poor connectivity of the internal pore channels of natural zeolite, its application in the water treatment industry has certain limitations.
Method used
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Embodiment 1
[0018] Take 85% natural zeolite and pickle with 4% hydrochloric acid to activate it, then ball mill it, take it out, mix it with 10% gypsum, then add 5% soluble starch, stir evenly, sprinkle water into shape, put it into the curing box, keep the temperature at 18°C, Humidity 90%, take it out after 3 days of curing, wash with deionized water until neutral, and dry at 90°C to obtain non-burning hydrochloric acid activated zeolite filter material.
Embodiment 2
[0020] Take 75% natural zeolite, pickle it with 6% hydrochloric acid and activate it, then ball mill it, take it out, mix it with 10% gypsum, and then add 15% Na 2 SO 4 , stir evenly, sprinkle water into shape, put it into the curing box, keep the temperature at 20°C and the humidity at 95%, take it out after curing for 5 days, wash it with deionized water until neutral, and dry it at 95°C to obtain non-burning type hydrochloric acid activated zeolite filter material.
Embodiment 3
[0022] Take 60% natural zeolite, pickle and activate with 8% hydrochloric acid, then ball mill, take it out, mix it with 22% bentonite, and then add 18% CaCl 2 , stir evenly, sprinkle water into shape, put it into the curing box, keep the temperature at 22°C, and the humidity at 97%, take it out after curing for 8 days, wash it with deionized water until neutral, and dry it at 100°C to obtain non-burning type hydrochloric acid activated zeolite filter material.
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Abstract
A calcination-free zeolite filter material activated by hydrochloric acid is obtained by taking natural zeolite cleaned and activated by hydrochloric acid, binders and pore-forming agents as raw materials, evenly mixing the raw materials based on certain proportion and sprinkling water on the raw materials to form balls, and maintaining proper temperature, humidity and curing time in the process of curing. The prepared calcination-free zeolite filter material activated by the hydrochloric acid is coarse in surface and porous, is beneficial for apposition growth of microorganisms in biological filters, has fine adsorbability and regenerability and has excellent effect on sewage disposal when being used as fillers in biological aerated filters. The calcination-free zeolite filter material activated by hydrochloric acid and a preparation method thereof dispense with sintering process, consume no coal, electricity and other energy, and correspond with the current national environmental protection policy, namely energy-saving and emission-reduction.
Description
technical field [0001] The invention relates to a biological filter filter material, in particular to a non-burning type hydrochloric acid activated zeolite filter material and a preparation method thereof. Background technique [0002] At present, natural zeolite has been widely used in the water treatment industry as the filter material of the biological aerated filter. However, due to the poor connectivity of the internal pore channels of natural zeolite, its application in the water treatment industry has certain limitations. Contents of the invention [0003] In order to overcome the deficiency of the natural zeolite filter material itself, the invention provides a non-burning hydrochloric acid activated zeolite filter material with natural zeolite powder as the main raw material and a preparation method thereof. [0004] A non-burning hydrochloric acid activated zeolite filter material comprises 50-85% of natural zeolite, 10-30% of binder and 5-20% of pore-forming a...
Claims
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Application Information
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