Loading flocculation pretreatment method of antibiotic fermentation wastewater
A technology for fermenting wastewater and antibiotics, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problems of substandard treatment, increasing the amount of flocculant added, and increasing treatment costs. , to achieve the effect of improving flocculation effect, improving removal efficiency and improving collision efficiency
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[0021] Example 1
[0022] The wastewater from the terminal regulator of the antibiotic fermentation process of a pharmaceutical factory has a temperature of 36°C, a pH of 7.69, a COD of 11514mg / L, and SS of 2355mg / L. The treatment process is as follows:
[0023] Disperse a certain amount of polyaluminum chloride in water to prepare a mixed solution with a mass concentration of 5%. This mixed solution is added to the wastewater under stirring to make the content of polyaluminum chloride in the wastewater 300mg / L, the stirring speed is 300r / min, and the stirring time is 10s.
[0024] A certain amount of polyacrylamide is dispersed in water to prepare a mixed solution with a mass concentration of 0.1%. The above mixed solution is added to the wastewater treated with polyaluminum chloride under stirring, so that the polyacrylamide is The content in the wastewater is 2.5mg / L, the stirring speed is 300r / min, and the stirring time is 20s.
[0025] A certain amount of antibiotic fermentatio...
Example
[0027] Examples 2-10
[0028] The waste liquid from the terminal regulator of the antibiotic fermentation process of a pharmaceutical factory has a temperature of 34°C, a pH of 7.06, a COD of 14264mg / L, and SS of 1724mg / L. The treatment process is as follows:
[0029] Take a certain amount of loading agent and disperse it in water to make the concentration C 1 To adjust the pH of the suspension. Under stirring conditions, add the above suspension to the waste liquid at a stirring speed of V 1 , The mixing time is T 1 . The volume ratio of waste liquid to suspension is 100:a.
[0030] Disperse a certain amount of polyaluminum chloride in water and prepare a mass percentage of C 2 The mixed solution of polyaluminum chloride was added to the wastewater treated with activated sludge under stirring conditions, and the stirring speed was V 2 , The mixing time is T 2 . The amount of the polyaluminum chloride mixed solution is such that the content of polyaluminum chloride in the wastewate...
Example Embodiment
[0035] The loading agent of Example 8 is the activated sludge produced by the biochemical treatment of the supernatant obtained by the solid-liquid separation of the antibiotic fermentation wastewater after flocculation treatment, and the precipitated sludge obtained by the solid-liquid separation after the antibiotic fermentation wastewater flocculation pretreatment. Mix in a ratio of 1:1;
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