Fenton-biological treatment processes for the removal of some pharmaceuticals from industrial wastewater.
A treatability study of pharmaceutical wastewater from El-Nasr Pharmaceutical and Chemical Company, South-East of Cairo, was carried out. The company discharges both industrial (6000 m(3)/d) and municipal wastewater (128 m(3)/d) into a nearby evaporation pond without any treatment. The generated raw wastewater is characterized by high values of COD (4100-13,023), TSS (20-330 mg/L), and oil grease (17.4-600 mg/L). In addition, the presence of refractory compounds decreases BOD/COD ratio (0.25-0.30). Analysis of raw wastewater confirmed that pre-treatment is required prior to discharge into public sewers to comply with the Egyptian Environmental laws and regulations. The obtained results indicated that the refractory compounds and their by-products cannot be readily removed by biological treatment and always remain in the treated effluent or adsorbed on the sludge flocs. The application of Fenton oxidation process as a pre-treatment improved the removal of pharmaceuticals from wastewater and appears to be an affective solution to achieve compliance with the law legislation with respect to discharge in a determined receptor medium.
Badawy
Mohamed I
MI
National Research Centre, Water Pollution Research Department, Dokki, Giza, Egypt. Badawy46@hotmail.com
Wahaab
Rifaat A
RA
El-Kalliny
A S
AS
D001673:Biodegradation, Environmental; D004534:Egypt; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007220:Industrial Waste / Q000331:legislation & jurisprudence / Q000517:prevention & control*; D007501:Iron / Q000737:chemistry*; D010084:Oxidation-Reduction; D004364:Pharmaceutical Preparations / Q000737:chemistry* / Q000378:metabolism; D012722:Sewage; D014874:Water Pollutants, Chemical
C045076:Fenton's reagent; D007220:Industrial Waste; D004364:Pharmaceutical Preparations; D012722:Sewage; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron