Improvement of the Capacity of Drinking Water Treatment Plant in East Quantara (Case Study)

North & South Sinai Company for Water and Wastewater ( NSSCWW ) Improvement of the Capacity of Drinking Water Treatment Plantin East Quantara (Case Study) Dr. Eng. Ibrahim Khaled El-Sayed Chairman North & South Sinai Company for Water & Wastewater

Introduction • The River Nile is Egypt’s main water resource and the country enjoys a fixed share of the river flow • But population increases and economic growth couples with limited water resources • Thus Egypt, like many other Arabic countries, is facing a problem of water scarcity • So, we must control excessive usage and reduce losses of potable water and optimize the utilization of treated wastewater North & South Sinai Company for Water & Wastewater

Considered Plant • The considered plant has been constructed in East Quantara on the east side of Suez Canal to serve North Sinai, Egypt • It started the actual production on 1996 • The required electrical power for the plant is supplied from the local electrical power network • The raw water is supplied from Nile River, Ismailia Canal on the west side of the Suez Canal North & South Sinai Company for Water & Wastewater

Considered Plant North & South Sinai Company for Water & Wastewater

Considered Plant • The plant consists of the following main systems : • Intake and Raw Water Pump Station : North & South Sinai Company for Water & Wastewater

Considered Plant • Distribution Shaft & Flash Mixing : North & South Sinai Company for Water & Wastewater

Considered Plant • Settling Tanks : North & South Sinai Company for Water & Wastewater

Considered Plant • Filter House : North & South Sinai Company for Water & Wastewater

Considered Plant • Treated Water Ground Reservoir : North & South Sinai Company for Water & Wastewater

Considered Plant • Chemical House • Sludge Pump Station North & South Sinai Company for Water & Wastewater

Considered Plant • Treated Water Pump Station : North & South Sinai Company for Water & Wastewater

Considered Plant PlantLayout North & South Sinai Company for Water & Wastewater

Considered Plant GoogleEarth North & South Sinai Company for Water & Wastewater

Treatment Stages • Pre-Chlorination : • Dosage dose of the chlorine in the form of chlorine water solution is dosed according to the raw water quality • Coagulation - Flocculation : • The solution of the aluminium sulphate is to be dosed into the raw water according to its quality and the JAR test result. The solution is dosed into the flash mixing shaft, fitted with a paddle stirrer • Flocculation is realized on the mechanical principle with paddle stirrers North & South Sinai Company for Water & Wastewater

Treatment Stages • Longitudinal settling tanks • This is the first separating stage • Gravitational quick filtration : • This is the second separating stage • Post-Chlorination : • The post-chlorination dose value shall be according to residual chlorine content in filtered water • The dosing point is into common outlet of filtered water North & South Sinai Company for Water & Wastewater

Capacity Improvement North & South Sinai Company for Water & Wastewater

Capacity Improvement • Raw Water Intake & Pump Station : • Maintenance of the intake and installing new screens • Maintenance and washing of the outlet pipeline • Installing new GRP outlet pipeline DN 1000 from the station to the siphons with a length of 1.5 km • Replacing the pumps with higher outlet flow rates pumps (from 330 lit/sec each to 550 lit/sec) North & South Sinai Company for Water & Wastewater

Capacity Improvement • Clarifiers : • Maintenance of the two inlet pipelines • Maintenance of the sedimentation tanks • Replacing the PVC perforated wall between the flocculation and sedimentation tanks with a concrete wall • Installing new electrically-drived valves for the sludge of the sedimentation tank North & South Sinai Company for Water & Wastewater

Capacity Improvement • Clarifiers : • Installing tube settlers in the end of each tank North & South Sinai Company for Water & Wastewater

Tube Settlers • The tube settlers provide a series of inclined surfaces for suspended particles to rapidly collect and settle upon while the clarified effluent flows out of the tank and on to the next stage of the treatment process • When the collected particles become heavy enough, they fall from the tube modules and descend to the bottom of the clarifier • In addition to enhancing laminar flow conditions, the inclined surfaces of the tubes reduce the distance that particles need to travel before settling • This rapid settling effect maximizes the effective surface area for settling, thereby minimizing clarifier footprint North & South Sinai Company for Water & Wastewater

Tube Settlers North & South Sinai Company for Water & Wastewater

Capacity Improvement • Clarifiers : • Installing new pipeline from the clarifiers to the filters North & South Sinai Company for Water & Wastewater

Capacity Improvement • Filters : • Installing new fully automatic-controlled control panels with PLCs • Installing new central PLC with HMI to monitor all the filters • Installing new electrically-driven valves for all filters • Installing new flow meters and level meters -------------------------------------------------------------------------------------------- After all the previous improvements,the plant productivity increases from 80,000 to 140 m3/day North & South Sinai Company for Water & Wastewater

Economical Analysis 1. Power Consumption Cost • Power Consumption Cost = 0.17 LE/m3 2. Chemical Cost • Chemical Cost = 0.055 LE/m3 3. Maintenance & Repairs Cost • Maintenance Cost = 0.045 LE/m3 4. Labour & Administration Cost • Labour Cost = 0.05 LE/m3 North & South Sinai Company for Water & Wastewater

Economical Analysis 5. Capital Cost • Without Tube Settlers • Capital Cost = 300,000,000 LE • Product = 100,000 m3/day • Working Days = 330 days/year • Expected Life Time = 20 years • Using Tube Settlers • Capital Cost = 300,000,000 LE • Tube Settlers = 6,000,000 LE • Product = 140,000 m3/day • Working Days = 330 days/year • Expected Life Time = 20 years • Capital Cost = 0.45 LE/m3 • Capital Cost = 0.33 LE/m3 North & South Sinai Company for Water & Wastewater

Economical Analysis Total Cost per One Cubic Meter • Total Cost without Tube Settlers = 0.77 LE/m3 of treated water • Total Cost with Tube Settlers = 0.65 LE/m3of treated water • By using Tube Settlers, the total cost decreased by 16%. North & South Sinai Company for Water & Wastewater

Conclusions • The following conclusions are obtained based on one year of operation : • The plant is very sensitive to turbidity. Any increase of turbidity requires more chemical treatment • The main design of the plant is suitable to be improved in order to increase the plant final capacity • After using tube settlers, the total cost of one cubic meter of treated water has been decreased by 16% North & South Sinai Company for Water & Wastewater

THANK YOU North & South Sinai Company for Water & Wastewater

Improvement of the Capacity of Drinking Water Treatment Plant in East Quantara (Case Study)