Biotreatment of al-Yarmook Hospital wastewater using packed bed bioreactor

الملخص EN

Biotreatment systems of wastewater for hospitals are a challenge for environmental engineers.

In this study, a pilot- scale system of aerobic fixed film packed bed was constructed for wastewater treatment of Al-Yarmok hospital which located in Baghdad.

The aim of this study was to test the performance of fixed film packed-bed for elimination of the organic compounds from wastewater under aerobic condition.

The parameters studied were : inoculums concentration, circulation rate, packing type and temperature.

The results showed that the system efficiently removed about 85 % of the chemical oxygen demand (COD) and 82 % of Biological oxygen demand (BOD), while percent reduction in turbidity was about 93 % and reduction in nitrate concentration was about 85 %.

It was found that temperature of 35oC and circulation rate of 16 L / min and inoculums concentration of 5 % gave the best results for bio treatment of wastewater.