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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Embodiment 1
[0022] The wastewater in the terminal adjustment tank of antibiotic fermentation process in a pharmaceutical factory has a temperature of 36°C, a pH of 7.69, a COD of 11514mg / L, and a 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%, and add the mixed solution to the waste water while stirring, so that the content of polyaluminum chloride in the waste water is 300mg / L, the stirring speed is 300r / min, and the stirring time is 10s.
[0024] Disperse a certain amount of polyacrylamide in water to prepare a mixed solution with a mass concentration of 0.1%, and add the above mixed solution to the above-mentioned waste water treated with polyaluminum chloride under stirring to make the polyacrylamide The content in the waste water is 2.5mg / L, the stirring speed is 300r / min, and the stirring time is 20s.
[0025] Take a certain amount of sedimentation...
Embodiment 2~10
[0028] The waste liquid in the terminal adjustment tank of antibiotic fermentation process in a pharmaceutical factory has a temperature of 34°C, a pH of 7.06, a COD of 14264 mg / L, and a SS of 1724 mg / L. The treatment process is as follows:
[0029] Take a certain amount of loading agent, disperse it in water, and prepare the concentration as C 1suspension, adjust the pH of the suspension. Add the above-mentioned suspension to the waste liquid under the condition of stirring, the stirring speed is V 1 , the stirring time is T 1 . The volume ratio of waste liquid to suspension liquid is 100:a.
[0030] Disperse a certain amount of polyaluminum chloride in water to prepare a mass percentage of C 2 The mixed solution of polyaluminum chloride is added to the above-mentioned waste water treated with activated sludge under the condition of stirring, and the stirring speed is V 2 , the stirring time is T 2 . The amount of the polyaluminum chloride mixed solution is such that t...
Embodiment 8
[0035] The loading agent in Example 8 is activated sludge produced by biochemical treatment of the supernatant obtained by solid-liquid separation after flocculation treatment of antibiotic fermentation wastewater and sedimentation sludge obtained by solid-liquid separation after flocculation pretreatment of antibiotic fermentation wastewater. 1:1 ratio mixing;
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