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Hemoglobin recovered from slaughterhouse blood has proven to be an effective flocculant of negatively charged particulate contaminants, but it is ineffective against positively charged contaminants. Phosphorylation is useful for modifying proteins to increase the number of negatively charged sites. Dry‐heat phosphorylation and chemical phosphorylation were applied to hemoglobin. The kaolin/hematite...
COD, TN and TP removal efficiency was studied in different C / N in the system by changing the dosage of CH3COONa. The best results obtained by experiment is that when the C / N is between 4 and 6. The average COD effluent concentration is 40.08mg / L, the removal rate is 87.5%;the average TN effluent concentration is 9.32 mg / L, the removal rate is 83.91%; the TP average effluent concentration is...
A combined process, demulsification-Fenton oxidation-coagulation, has been employed to treat a sort of high-strength and stable emulsion wastewater produced from a machinery factory. The influences of demulsifier species, dosage of Fenton reagents, oxidation reaction time and pH of coagulation have been investigated. The results indicate that AlCl3 is the most effective demulsifier and the optimal...
A new type of inorganic flocculant, poly silicon boron ferric zinc sulfate (PSBFZ), was synthesized from sodium silicate, ferric sulfate, zinc sulfate and sodium tetra borate by co-polymerization. Comparative flocculation behaviors among poly-aluminium chloride (PAC), poly-ferric sulfate (PFS), poly silicate ferric (PSF) and PSBFZ were explored. The influences of pH, temperature, storage time and...
A strain, Enterobacter sp.S080, was isolated from a lab-scale modified AAO system treating dye-containing wastewater. This strain exhibited a evident color-removal capability when tested against Reactive Black 5under anaerobic condition. More than 85% of Reactive Black 5 was removed within 25h at 50 mg/L dye concentration under anaerobic conditions. Additionally, physiological-biochemical characteristics...
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