Abstract

PHYSICOCHEMICAL AND BACTERIOLOGICAL POLLUTION STUDY OF A HOSPITAL EFFLUENT WITH THE AIM OF THE IMPLEMENTATION OF AN ADEQUATE TREATMENT: CASE OF AR-RAZI HOSPITAL, MARRAKECH (MOROCCO).

Qadouri Asmaa*, Mouhir Latifa, Saafadi Laila, Belkadi Mohammed Said

ABSTRACT

The goal of our study is to characterize the rough effluent of the Mother-Child Hospital connected with the Center University Mohammed VI in Marrakech and to recommend a suitable treatment for this effluent. The physico-chemical and bacteriological analysis of the total rejected effluent before evacuation by the various services, of the Mother Child Hospital, revealed that this liquid rejection is very charged by organic matter in terms COD (1931.66 mg/l }1712, 81) in BOD5 (1071.74 mg/l }1141, 71), in TSS (847.28 mg/l }295, 6), VM (55.69% }19, 65), DM (1.77 g/kg }0, 96), Conductivity (1954 ƒÊs/cm }539) with a pH of 6.8 (}1, 57). The average contents: nitrates, nitrites, ammonical nitrogen and Kjeldhal nitrogen are in order about 3.23 mg/l (}4, 91), 8.9 mg/l (}0, 1), 59,3mg/L (}43, 54) and 117.67 L (}41, 21). The bacteriological analyses showed a concentration raised in faecal coliform (CF average: 5.8 ~ 106 UFC ml-1 } 10%) and in faecal streptococci (average SF: 4.6 ~ 105 UFC ml-1 } 10%). Although the hospital wastewater presented a high organic load and a satisfactory biodegradability (reports BOD5/COD = 1.5 and TSM/BOD5 = 1.5), there was, however, detection of a high average contents chromium plates, some (0.604 mg/L), mercury (1,986mg/L) and silver with (0.388 mg/L) underlines well the industrial character of waste waters or effluent of the hospital) Ar-Razi. Based on these findings of the Hospital Effluent, we are proposing a need for a plan for proper treatment, before evacuation into the communal network. This Proposal is based upon the physiochemical concentrations of these metals and pathogens within the effluent. However, it is necessary to take into account the volume of domestic wastewaters that are mixed with the effluents from the hospital of caring for their patients.

Keywords: Hospital effluent, Physical-chemical, biological, characterization, Morocco.