Treatment method of fosfomycin calcium salt-containing high-concentration organic process wastewater

Abstract

The invention discloses a treatment method for saliferous high-concentration organic process waste water during fosfomycin calcium production. The treatment method comprises the following steps of adding a proper amount of calcium chloride into waste water, controlling concentration of calcium ions to reach 1-10g / L, heating and keeping the temperature, and performing suction filtration to obtain a fosfomycin calcium crude product and waste water I after pretreatment; adding a proper amount of sodium carbonate solution into the waste water I after pretreatment, depositing the calcium ions in a form of calcium carbonate and then removing the calcium ions; absorbing the obtained waste water II after pretreatment by active carbon to remove alpha-phenylethylamine dissolved in the waste water, performing suction filtration to obtain waste water III after pretreatment, then evaporating, condensing and crystallizing to obtain a sodium chloride crude product, then pulping and refining by methyl alcohol, performing suction filtration and drying to obtain a sodium chloride finished product. All indicators are higher than first-class product standard of national industrial salt; the absorbed active carbon can be used as boiler fuel; the evaporated and condensed water obtained from the evaporation and condensation returns to the production process of fosfomycin calcium to be recycled; the methyl alcohol mother liquor is rectified to recover methyl alcohol to be reused.

Description

technical field [0001] The invention relates to the field of medical wastewater treatment, in particular to a treatment and resource utilization method for high-concentration salt-containing organic process wastewater produced in the production process of antibiotic-fosfomycin calcium. Background technique [0002] Fosfomycin calcium is used for simple lower urinary tract infection and intestinal infection (including bacillary dysentery) caused by sensitive bacteria, and can also be used in combination with other antibacterial drugs to treat severe infections caused by sensitive bacteria, such as sepsis , peritonitis, osteomyelitis, etc., white crystalline powder, tasteless, slightly soluble in water. Almost insoluble in methanol, insoluble in acetone, chloroform, ether, benzene. Fosfomycin calcium is used for human medicine, and the market demand has grown rapidly in recent years. According to the export data of China Customs in 2013, the total output of fosfomycin calcium...

AI Technical Summary

Problems solved by technology

Theoretically, this kind of treatment process is feasible, but it is impossible to do it in practical application. Such high temperature and pressure are required, the equipment investment and operation cost are high, and safety is difficult to guarantee.

Images