모로코는 현재 새로 위탁받은 Khenifra 하수처리시설에서 삼수여과(trickling filters)를 사용함으로써 경제적 이득을 얻고 있다. 삼수여과 적용 이전에 석호(lagoon)들은 폐수가 수로로 이동하기 전 배출되는 용도로 사용됐다.

Khenifra 하수처리시설의 처리 절차는 처음부터 끝까지 슬러지 탈수를 위한 건조 베드에 의해 임호프 탱크 안의 침전과 퇴적의 초기 규명, 삼수여과와 제2를 통한 생물학적 처리와 제2침전 과정을 포함한다.

 

 

 

Morocco is now benefiting from the use of trickling filters at the newly commissioned Khenifra Wastewater Treatment Works.

 

Prior to the adoption of trickling filters, facultative and maturation lagoons were used ahead of discharge of the effluent into the watercourse.

 

The treatment process at the Khenifra Wastewater Treatment Works from start to finish includes: Initial clarification of the influent by settling and sedimentation within Imhoff tanks, biological treatment via trickling filters and secondary settling, followed by drying beds for sludge dewatering.

 

The new wastewater treatment works will serve a population in excess of 150,000 in the city of Khenifra and will be operated and maintained by Biwater on behalf of the Office National de l’Electricite et de l’Eau Potable Branche Eau (ONEE) for two years.

 

Naoum Abdellatif, manager of South Sewage Division of ONEE, said: “The treatment process being adhered to will ensure that groundwater and surface water are free from contaminants.”

 

Giles Jackson, Regional Director for Africa, Biwater Internaltional, said: “The incorporation of trickling filters into the design process at the wastewater treatment works in Khenifra, will ensure that the effluent being discharged meets higher wastewater treatment quality standards, while also improving odour conditions in and around the plant.”

 

[출처 = Water World / 2014년 11월 10일]