Sources of wastewater from pharmaceutical industry

The manufacturer of high-voltage electrostatic circulating water will explain to you that pharmaceutical wastewater has the characteristics of large difference in composition, complex components, large amount of pollutants, high COD, low and fluctuating ratio of BOD5 and CODCr, poor biodegradability, many refractory substances, strong toxicity, intermittent discharge, large fluctuation of water quantity, water quality and pollutant types.

The sources of antibiotic production wastewater are fermentation filtrate, extraction raffinate, distiller residue, adsorption waste liquid and catheter waste liquid, etc., which mainly contain mycelium, residual nutrients, metabolites and organic solvents. The concentration of organic matter is very high. Cod, BOD, SS and TN can reach 5000-20000 mg / L, 2000-10000 mg / L, 5000-23000 mg / L and 600-1000 mg / L, respectively.

The source of synthetic pharmaceutical wastewater is the loss of raw materials, by-products, organic solvents and so on, which are caused by many reverse steps and low product conversion rate. It contains a variety of toxic and harmful chemical substances, such as steroids, nitro compounds, aniline compounds, piperazines, fluorine, mercury, chromium and copper, organic solvents such as ethanol, benzene, chloroform, petroleum ether, etc Metal and waste acid and alkali and other pollutants.

The sources of wastewater from Chinese patent medicine production include washing wastewater, separation water, evaporation condensate water, liquid loss from washing, boiling, purification and separation, evaporation concentration and preparation, and natural biological organic matters, such as organic acid, anthraquinone, lignin, alkaloid, tannin, tannin, protein, sugar, starch, etc.

There are several treatment technologies for pharmaceutical wastewater

① Pretreatment: coagulation, air flotation, micro electrolysis, Fenton reagent, catalytic oxidation, etc;

② Anaerobic process: UASB, two-phase anaerobic digestion, EGSB, etc;

③ Aerobic process: biological contact oxidation, CASS, SBR, activated sludge process, etc.