A compound biological preparation and its application in treating mercury-containing wastewater
A biological preparation and content technology, applied in biological water/sewage treatment, methods based on microorganisms, fixed on/in organic carriers, etc., can solve the problem that the concentration of mercury ions cannot be reduced very low, and the concentration of effluent is difficult to achieve discharge Standards, incomplete wastewater treatment and other issues, to achieve the effect of reducing the bioavailability of mercury in the water phase, improving the adhesion of bacterial strains, and reducing the amount of sludge produced
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Embodiment 1
[0030] A compound biological preparation, which is prepared according to the following process:
[0031] 1) Pseudomonas putida, Bacillus licheniformis, Enterobacter cloacae, Sporosporium thermophiles and Bacillus cereus were cultured on slant, shake flask seeds and fermenter respectively to obtain Pseudomonas putida fermentation broth and lichen Fermentation liquid of Bacillus cloacae, fermentation liquid of Enterobacter cloacae, fermentation liquid of Sporosporium thermophila and fermentation liquid of Bacillus cereus;
[0032] 2) The fermentation broth of Pseudomonas putida, Bacillus licheniformis, Enterobacter cloacae, Sporosporium thermophila and Bacillus cereus in a volume ratio of 4:4:3:2:2 Mix evenly to obtain a mixed fermentation liquid, and then concentrate to one-fifth of the original volume to obtain a concentrated bacterial liquid; the fermentation liquid of Pseudomonas putida, Bacillus licheniformis, Enterobacter cloacae The concentrations of the mold fermentatio...
Embodiment 2
[0037] A compound biological preparation, which is prepared according to the following process:
[0038] 1) Pseudomonas putida, Bacillus licheniformis, Enterobacter cloacae, Sporosporium thermophiles and Bacillus cereus were cultured on slant, shake flask seeds and fermenter respectively to obtain Pseudomonas putida fermentation broth and lichen Fermentation liquid of Bacillus cloacae, fermentation liquid of Enterobacter cloacae, fermentation liquid of Sporosporium thermophila and fermentation liquid of Bacillus cereus;
[0039] 2) The fermentation broth of Pseudomonas putida, Bacillus licheniformis, Enterobacter cloacae, Sporospora thermophilicus and Bacillus cereus in a volume ratio of 7:7:5:3:3 Mix evenly to obtain a mixed fermentation liquid, and then concentrate to one-fifth of the original volume to obtain a concentrated bacterial liquid; the fermentation liquid of Pseudomonas putida, Bacillus licheniformis, Enterobacter cloacae The concentrations of the mold fermentati...
Embodiment 3
[0044] The addition amount of composite biological preparation of the present invention in mercury-containing wastewater:
[0045] The wastewater treatment process includes the following steps: the mercury-containing wastewater is filtered and precipitated to remove large particles and flocs, and then the pH is adjusted to 6.8; then it enters the bioremediation tank, and the compound biological agent is added, and the treatment time is 72 hours.
[0046] Gradient test to determine the amount of compound biological preparations added:
[0047] Set two mercury concentration groups: Group 1: Hg 2+ The concentration is 30mg / L:, group 2: Hg 2+ The concentration is 60mg / L. Treatment process is with reference to embodiment 1; Mercury degradation rate=(Hg before processing 2+ Content - Hg after treatment 2+ content) / Hg before treatment 2+ Content × 100%. figure 1 In the experiment, the gradient test was set according to the addition amount of the compound biological agent per cu...
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