water treatment lebanon,water treatment middle east

Feasibility Study for Tripoli Sewerage System
and Wastewater Treatment Plant

Location	Tripoli - Lebanon
Client	Ministry of Hydraulic and Electric Resources and Council for Development and Reconstruction
Duration of Services	1995 - 1997 (15 months)
Cost of Implementation	USD 100 Million Phase 1
Financing of Works	European Bank for Investment (EIB)

Project Main Components and Features
	Master Plan for sewage collection networks
	Master Plan for storm water drainage systems
	Wastewater treatment plant - Secondary treatment
	Sea outfall 2.6km long
	Average effluent quality: 30mg/L BOD5 30 mg/L SS
	Sewage treatment plant: Ultimate average and peak quantities of domestic and industrial discharges as well as infiltration and other flows reaching the wastewater treatment plant will be 3.3 m3/s (1,740,000 PE) and 4.92 m3/s. The adopted discharge values are 60 g/c/d of BOD5 and 70 g/c/d of suspended solids.

	The main units of the wastewater treatment plant including sludge treatment facilities are as follows: • Screens • Aerated grit/grease chambers • Primary sedimentation tanks • Aeration tanks • Secondary (or final) sedimentation tanks • Return activated sludge pumping station • Raw sludge thickeners • Digestion tanks • Gas storage tank • Digested sludge thickeners / holding tanks • Sludge conditioning • Sludge dewatering unit • Odour control system • Disinfection unit (only in case the final effluent is to be used for irrigation) • Final effluent pumping station
Scope of Services
	Feasibility Study for sewage networks and drainage systems
	Preparation of a Master Plan for wastewater and storm water collection systems
	Preaparation of Tender Documents for sewage treatment plant and sea outfall