Preparation method of hydrogel embedded microorganism carrier

A microbial carrier, hydrogel technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of low microbial concentration, few microorganisms, poor microbial stability, etc.

Active Publication Date: 2018-11-02
上海持美生物环保科技有限公司
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Problems solved by technology

[0007] The technical problem mainly solved by the present invention is that in the sewage treatment industry, most of the microbial carriers can only form biofilm on the surface, the amount of fixed microorganisms is relatively small, the microbial carriers have poor hydrophilicity and biological affinity, and

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  • Preparation method of hydrogel embedded microorganism carrier

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Embodiment Construction

[0025]Cut off the roots of the soybeans, collect the excised soybean roots, chop the soybean roots and soak them in an ethanol solution with a mass fraction of 95% for 3 to 5 minutes, filter the filtrate to obtain a filter residue, and then use a sodium hypochlorite solution with a mass fraction of 5% and Rinse with distilled water for 2 to 3 times in order to obtain the rhizobia extract; mix the rhizobia extract with the digestive bacillus strain at a mass ratio of 3:1 to obtain a mixed strain, and mix the mixed strain with a mass ratio of 1:200 Inoculate in activated sludge with a solid mass content of 5% to obtain an activated sludge bacterial liquid, add ammonium chloride, sodium bicarbonate, calcium sulfate dihydrate, and magnesium sulfate heptahydrate to the activated sludge bacterial liquid. Ammonium, sodium bicarbonate, calcium sulfate dihydrate, and magnesium sulfate heptahydrate were added in amounts of 2%, 5%, 0.5%, and 0.8% of the mass of the activated sludge soluti...

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Abstract

The invention relates to the technical field of preparation of microorganism carriers and in particular relates to a preparation method of a hydrogel embedded microorganism carrier. The preparation method comprises the following steps: extracting root nodule bacteria extract from soybean roots and mixing the root nodule bacteria extract with a lactobacillus alimentarius strain to prepare a mixed strain; inoculating active sludge with the mixed strain to obtain active sludge bacterium liquid; adding nutrient substances into the active sludge bacterium liquid and culturing to obtain sludge turbid liquid; mixing a polyurethane pre-polymer and the sludge turbid liquid and pouring a mixture into a mold; adding activated carbon powder, a catalyst, an initiator and the like and reacting to obtaina polyurethane embedded nitrifying bacterium gel block; finally, dicing the polyurethane embedded nitrifying bacterium gel block and mixing with self-made activated nano-powder to obtain a loading matrix; then immersing and carrying out film formation to obtain the hydrogel embedded microorganism carrier. According to the preparation method provided by the invention, nitrogen source pollutants insewage can be effectively degraded through re-nitrifying bacteria, and the hydrophilicity of the microorganism carrier is improved through hydrogel prepared from potassium persulfate and tetramethylethylenediamine; the biological resistance of root nodule bacteria is strong; the preparation method has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of microbial carrier preparation, in particular to a method for preparing a hydrogel-embedded microbial carrier. Background technique [0002] With the rapid development of my country's industry and agriculture and the continuous acceleration of urbanization, urban domestic sewage treatment has become the primary problem to be solved in order to realize the sustainable development of my country's economy and society and build an ecologically harmonious homeland. Biological sewage treatment technology represented by activated sludge has been widely used in the treatment of urban and industrial sewage. However, the traditional activated sludge technology still needs to be further improved in terms of reducing the total nitrogen in the effluent of sewage plants. At the same time, the large amount of excess sludge produced has also become a secondary pollution source, so the scope of use is limited. [0003] At...

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Application Information

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IPC IPC(8): C02F3/10C02F3/34
CPCC02F3/10C02F3/105C02F3/108C02F3/109C02F3/34Y02W10/10
Inventor 刘茂龙邓博陈帅
Owner 上海持美生物环保科技有限公司
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