WASIT WATER TREATMENT PLANT

PROJECT DESCRIPTION:

   General Scope of the Work:

The project consists of civil works of a Water Treatment Plant (WTP) in Wasit, Governorate together with supply, assembling testing and commissioning of raw water and treated water mains and of the mechanical, electrical and instrumental equipment.

Plant Capacity:

Drinking water WTP net output required by the project shall be 1000 (one thousand) cubic meter per hour (m3 /h).

Water Quality:

WTP will provide for treatment of raw water for drinking and domestic use. Thus, the system must treat the raw water so that the WTP effluent will comply with World Health Organization (WHO) standards. The plant is designed to produce the following quality of water, generally in accordance with the WHO guidelines:

Target Turbidity0.5 NTU average, 1 NTU max. E coli or thermo tolerant coliform bacteria 0 in 100ml sample It is anticipated that the target residual metals will be followed, subject to confirmation of concentrations in the raw water, Aluminium Less than 0.2 mg/l Iron Less than 0.2 mg/l

Plant Components:

The following list of plant components has been established according to WTP detailed design:

a. Pumping and treatment stations and connected facilities:

• Raw water intakes and pumping station (RWPS).

• Raw water main from RWPS to WTP.

• In-line chemical disperser.

• Flocculators / clarifiers.

• Rapid gravity filters.

• Chlorine contact tank .

• Treated water storage tank and pumping station (TWPS)

. • Treated water main from TWPS to the distribution network.

• Wastewater holding tank and pumping station.

• Overflow holding tank and pumping station .

• Chemicals building.

• Chlorine building

. • Electrical building.

• Miscellaneous chambers.

b. Other service infrastructures:

• Staff quarters.

• Administration Building and water quality laboratory.

• Maintenance Building.

• Guard House.

c. Elevated Water Storage Tank:

It is a component of the project but the design of the tank and foundation is to be carried out by the contractor. The construction cost is to be negotiated with the Client after submission of the preliminary design.

The main process functions include:

• Extraction and transmission of raw water from the intake site to the treatment plant site

. • Makeup, storage, and injection of flocculation chemicals into the raw water stream.

• Flash mixing of flocculation chemicals and raw water in the raw water main.

• Flocculation and clarification of the raw water.

• Rapid gravity filtration of the clarified water.

• Makeup, storage, and injection of disinfection chemicals into the filtered water stream.

• Collection and storage of treated water, including establishment of disinfection contact time.

• Transmission of treated water from the treatment plant site to the distribution network

 • Extraction and storage of sludge from the filters and flocculator / clarifiers.

• Collection and storage of miscellaneous process wastes. Transmission of sludge and miscellaneous process wastes from the treatment plant site to the river outfall.

CONSULTANCY SERVICES:

Construction Supervision in Association with "Regional Bureau for Designs and Consultations".