Novel non-sintered biological stuffing rapid in biofilm formation and preparation method thereof
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A sintering-free, membrane biological technology, applied in sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc. The effect of large specific surface area, long service life and good treatment effect
Inactive Publication Date: 2014-07-30
HARBIN UNIV OF SCI & TECH
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[0006] The present invention aims to solve the technical problems of the existing biological fillers in the water treatment process, such as long film-forming time, poor effluent quality, high energy consumption in the preparation process, and environmental pollution, thereby providing a new type of non-sintering fast film-forming biological filler and its Preparation
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specific Embodiment approach 1
[0031] Specific embodiment one: a kind of new-type sintering-free fast film-forming biofiller of this embodiment consists of 18% to 37% sepiolite, 18% to 37% medical stone, 15% to 23% cement, 3% to 4.5% polyvinyl alcohol, 4.5% to 7% sodium alginate, 10% to 16% hydrogen peroxide with a volume concentration of 30%, 0.45% to 0.69% ferric chloride, 0.45 %~0.69% manganese sulfate, 0.63%~0.9% cobalt chloride and 1.5%~2.7% agar.
specific Embodiment approach 2
[0032]Specific embodiment two: the preparation method of a kind of new-type sintering-free fast film-hanging biological filler of the present embodiment is to carry out according to the following steps:
[0033] 1. Weigh 18% to 37% of sepiolite, 18% to 37% of medical stone, 15% to 23% of cement, 3% to 4.5% of polyvinyl alcohol, 4.5% to 7% sodium alginate, 10% to 16% volume concentration of 30% hydrogen peroxide, 0.45% to 0.69% ferric chloride, 0.45% to 0.69% manganese sulfate, 0.63% to 0.9% chloride Cobalt and 1.5% to 2.7% agar;
[0034] 2. Heat and dissolve the polyvinyl alcohol and sodium alginate weighed in step 1 in water, add after cooling the hydrogen peroxide with a mass concentration of 30% weighed in step 1 and mix evenly to obtain a liquid mixture;
[0035] 3. Grinding the sepiolite, medical stone, cement, ferric chloride, manganese sulfate, cobalt chloride and agar into powder and mixing uniformly to obtain a solid mixture;
[0036] 4. After mixing the liquid mixt...
specific Embodiment approach 3
[0046] Specific embodiment three: the difference between this embodiment and specific embodiment two is: in step one, take by weight 37% sepiolite, 18.52% medical stone, 18.56% cement, 3.70% polystyrene Vinyl alcohol, 5.56% sodium alginate, 12.96% volume concentration of 30% hydrogen peroxide, 0.56% ferric chloride, 0.56% manganese sulfate, 0.74% cobalt chloride and 1.84% agar. Others are the same as in the second embodiment.
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Abstract
The invention provides novel non-sintered biological stuffing rapid in biofilm formation and a preparation method thereof, relating to biological stuffing and preparation methods thereof and solving the technical problems that the existing biological stuffing has long biofilm formation time and poor effluent quality in water treatment processes and preparation processes are high in energy consumption and pollute the environment. The biological stuffing is prepared from sepiolite, medical stone, cement, polyvinyl alcohol, sodium alginate, hydrogen peroxide, ferric chloride, manganese sulfate, cobalt chloride and agar. The method comprises the following steps: I. heating and dissolving polyvinyl alcohol and sodium alginate, adding hydrogen peroxide after cooling, and mixing the components uniformly, thus obtaining a liquid mixture; II. mixing the liquid mixture with other solid components, granulating the mixture, putting the granules at normal temperature, drying and sieving the granules, curing the granules at high pressure and low temperature, steam-curing the granules at constant temperature, and cooling the granules at normal temperature, thus obtaining the biological stuffing. Compared with the common ceramsite, the biological stuffing has short biofilm formation time, good effluent quality and coarse surface and is beneficial for microorganism growth. The biological stuffing is applied to the fields of environmental applied materials and sewage treatment.
Description
technical field [0001] The invention relates to a biological filler and a preparation method thereof. Background technique [0002] The biological aerated filter is one of the biofilm treatment processes. Its working principle is to fill the filter with granular fillers with a certain particle size. Using this granular filler as a carrier, a highly active biofilm grows on the surface. , aeration inside the filter. When the sewage flows through, the biofilm attached to the surface of the filler can give full play to the metabolism of microorganisms, as well as the adsorption and interception of the granular filler to treat the sewage. When the biofilm on the surface of the filler thickens and falls off, the quality of the effluent water deteriorates, and the head loss increases, perform backwashing to wash away the trapped dirt and aging biofilm, and restore the water purification effect after re-hanging the film. The choice of biological filler determines the operation of ...
Claims
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