Research On The Treatment Of Antibiotics Pharmaceutical Wastewater

With the development of the pharmaceutical industry in our country, antibiotic is the widest-used material in the world, its production will produce large amount of wastewater which is higher COD concentration, higher chroma, higher SO42- and weak biodegradability etc. There are various organic pollutants containing in the wastewater, among which most are difficult to be degraded, for example, rudimental antibiotics which would have inhibition effect on microorganism, and it's hard to get the anticipating result if the traditional methods are used to dispose the wastewater. The treatment of physical-chemical method and biochemical method were studied, which had great meaning by treating with the antibiotics wastewater from TongLian pharmaceutical Group Corporation.The treatment efficacity of antibiotics wastewater by coagulation method, adsorption, Fe-C micro-electrolytical method and Fenton reagent method were studied firstly. Boron sludge and fly ash were adopted in the coagulation method, which obtained the optimum parameters such as the dosage of coagulant, pH and mixing speeds etc. The research showed that under the optimum parameters, the COD of the wastewater would be removed 53% by boron sludge and PAM combination, but the decline of chroma was not distinctly. The acidified fly ash could remove chroma effectively, the chroma of the wastewater was 62.5 times after the treatment of acidified fly ash, but the decline of COD was not distinctly. The result of Fe-C micro-electrolytical method and Fenton reagent method were better, COD and chroma total removal of excess 70% and 95% respectively, but the high-priced H2O2 which Fenton need restricted on the development of this method.And then the techniques of hydrolytic acidification-UASB-contact oxidation and biological activated carbon treatment of antibiotics wastewater were studied. The research showed that if a hydrolytic acidification tank was added in the front of the anaerobic-aerobic biochemical treatment, the wastewater would be more likely to produce biochemical reaction and the rate of it would be enhanced dramatically. The terminal of this system was the biological activated carbon, it could be removal COD and chroma of the emerge water from contact oxidation pillar effectively, to make the wastewater effluent measure up to the industrial standards basically. The biochemical research showed that, this technics had many advantages than other anaerobic-aerobic processes, such as good efficiency and run steadily. The research showed that this biochemical treatment system maximal flow was 2000mL/d, hydraulic retention time was 3 days, COD organic volumetric loading was 4.41kg/m3·d. The COD of the wastewater which had been treated after the contact oxidation was about 1100mg/L, chroma was 260 times. The COD of the wastewater which had been treated after the biological activated carbon was under 600mg/L, chroma was 100 times. The biological activated carbon could be long-term use, regeneration was not needed, saved the cost.