Abstract
The possibility of biogas obtaining in a pharmaceutical plant anaerobic wastewater treatment process, which contains antibiotics of different classes (tetracycline, norfloxacin, cephalosporin, penicillin) has been studied. The enzymatic process was conducted in the mesophilic regime (37 ± 1 ° C) using free-floating and granulated anaerobic sludge. As granulation centers, talc-based sorbents were used. It was shown that wastewater treatment efficiency depends on the inoculum type, wastewater component composition and antibiotics content. With the use of granulated anaerobic sludge, during distillery wastewater treatment with norfloxacin content 10 mg / dm3 and tetracycline 191 cm3 / g of wastewater the biogas yield reaches 254 cm3 / g of wastewater, and methane content reaches 70%.
Highlights
In the process of antibiotics production by the chemical and microbiological methods, in spite of local sewage treatment, antibiotics content in sewage water reaches 10 mg / dm3 and higher
As a result of microorganisms association adaptation to tetracycline antibiotics (CAS number 64-75-5), which belong to substituted hydroxyamines and in the basis of chemical structure they contain the octahironaphthacene core, and norfoxacin (CAS number 70458-96-7), which belongs to fluoroquinolones, viable associations were obtained that under anaerobic conditions produced biogas
Consists of carbon dioxide, i.e. in the association microorganisms-destructors tolerant to the antibiotic still function, this is confirmed by a decrease in the pH from 7.15 to 6.2
Summary
In the process of antibiotics production by the chemical and microbiological methods, in spite of local sewage treatment, antibiotics content in sewage water reaches 10 mg / dm and higher. At such COD values, an increase in purification degree is possible with simultaneous use of ozonization, sorbents and biological treatment method
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