Biological composite flocculant for waste water treatment and preparation method thereof
A composite flocculant and wastewater treatment technology, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of affecting the growth of bacteria and the reduction of flocculant activity, and achieve flocculation Good effect, significant effect, better flocculation effect Excellent effect
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[0017] Embodiment 1 The biological composite flocculant used for wastewater treatment of the present invention and its preparation method
[0018] A biological composite flocculant for wastewater treatment, comprising the following raw materials in parts by weight: 30 parts of a co-fermented product of Aspergillus sojae and Nocardia rubrum, 50 parts of cellulose xanthate, and 3 parts of chitosan.
[0019] The preparation method of the co-fermented product of Aspergillus sojae and Nocardia rubra is a two-stage fermentation method, which specifically includes the following steps: After the fermentation medium is sterilized, 10% Nocardia rubra seed fermentation broth is connected to control the fermentation The temperature is 30℃, and the air volume is 1.5m 3 Cultivate for 40h under the condition of / h. At this time, 10% Aspergillus sojae seed fermentation liquid is connected, the fermentation temperature is controlled to 26℃, and the aeration rate is 1.8m 3 Cultivate for 26h under the...
Example Embodiment
[0022] Embodiment 2 The biological composite flocculant used for wastewater treatment of the present invention and its preparation method
[0023] A biological composite flocculant for wastewater treatment, comprising the following raw materials in parts by weight: 40 parts of co-fermented product of Aspergillus sojae and Nocardia rubrum, 95 parts of cellulose xanthate, and 6 parts of chitosan.
[0024] The preparation method of the co-fermented product of Aspergillus sojae and Nocardia rubra is a two-stage fermentation method, which specifically includes the following steps: After the fermentation medium is sterilized, 10% Nocardia rubra seed fermentation broth is connected to control the fermentation The temperature is 32℃, the ventilation is 1.7m 3 Cultivate for 44 hours under the condition of / h, at this time, insert 10% Aspergillus sojae seed fermentation liquid, control the fermentation temperature to 29℃, and the aeration rate to 2.2m 3 Cultivate for 30h under the condition o...
Example Embodiment
[0027] Embodiment 3 The biological composite flocculant used for wastewater treatment of the present invention and its preparation method
[0028] A biological composite flocculant for wastewater treatment, comprising the following raw materials in parts by weight: 35 parts of a co-fermented product of Aspergillus sojae and Nocardia rubrum, 75 parts of cellulose xanthate, and 5 parts of chitosan.
[0029] The preparation method of the co-fermented product of Aspergillus sojae and Nocardia rubra is a two-stage fermentation method, which specifically includes the following steps: After the fermentation medium is sterilized, 10% Nocardia rubra seed fermentation broth is connected to control the fermentation The temperature is 32℃, and the ventilation is 1.6m 3 Cultivate for 42h under the condition of / h, at this time, insert 10% Aspergillus sojae seed fermentation liquid, control the fermentation temperature to 28℃, and the aeration rate to 2.0m 3 Cultivate for 26-30h under the conditi...
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