水解酸化/生物接触氧化/ClO_2消毒处理中小型医院废水的效果分析

THE EFFECTIVENESS ANALYSIS OF TREATMENT FOR SMALL AND MEDIUM HOSPITAL WASTEWATER BY HYDROLYSIS ACIDIFYING/CONTACT OXIDIZATION/ClO_2 DISINFECTION

采用水解酸化/生物接触氧化/ClO2消毒处理某中小型医院废水,当进水COD、BOD5、SS、氨氮质量浓度分别为190～300 mg/L、80～150 mg/L、42～56 mg/L、≤14.87 mg/L粪大肠菌群(MPN)≥25 000 L-1时,去除率分别为74%～83%、89%～93%、71%～81%、≥32.7%和99.6%～99.7%,工程出水达到国家医疗机构水污染物排放标准(GB18466-2005)排放标准。因此,该工艺处理中小型医院废水具有较好的实际运用价值和明显的经济效益。

The combined process of hydrolysis acidifying, contact oxidization and ClOz disinfection was used to treat small and medium hospital wastewater. When the concentrations of the influent COD, BODs, SS, NH3-N and fecal coliform group （MPN） were 190-300 mg/L, 80-150 mg/L, 42-56 mg/L, respectively, which were less than 14.87 mg/L and more than 25 000 L-1. And the removal rate were 74%-83%, 89%~93%, 71%-81%, which were more than 32.7% and 99.6%-99.7%, respectively. All the indexes basically reached the discharge standard of water pollutants for medical organization （GB 18466-2005 ）. Therefore, the combination technology was practical application and significant economic benefits for small and medium hospital wastewater.