Municipal water supply project case analysis

Home
>
Project case
>
Municipal water supply project case analysis

11 February, 2024

Project Background

This project is located in Pennsylvania, USA, aiming to enhance the city’s water supply system’s quality and capacity. With the city’s population growth and industrialization, the existing water supply system faced issues of unstable water quality and insufficient supply. Therefore, the city government decided to invest in advanced water treatment equipment to meet the needs of residents and industrial users.

Water Quality Requirements

According to the U.S. Federal Drinking Water Standards, the water supply should meet the following requirements:

Turbidity: 95% of filtered water samples should have turbidity not exceeding 0.3 NTU.
Color: ≤15 degrees.
pH Value: 6.5-8.5.
Residual Chlorine: 0.3-0.5 mg/L.
Total Bacteria Count: ≤100 CFU/mL.
Coliform Bacteria: Not detectable.

Project Technical Details

To meet the above water quality requirements, the project adopted advanced water treatment processes and equipment. The following are the project parameters and equipment specifications:

Project Parameters	Values
Design Daily Water Supply	100,000 m³
Design Peak Water Supply	120,000 m³
Source Water Quality	River Water
Main Treatment Process	Pre-treatment + Reverse Osmosis + UV Disinfection
Design Water Treatment Capacity	100,000 m³/d
Design Water Quality Standard	U.S. Federal Drinking Water Standards

Equipment Specifications	Model/Specification	Quantity	Main Function
Pre-treatment Filter	PF-2000	6	Remove large particles from water
Reverse Osmosis Membrane	RO-1500	15	Remove dissolved solids from water
UV Disinfection Unit	UV-8000	3	Kill microorganisms in water
High-efficiency Chemical Dosing Device	DAF-3000	2	Add necessary chemicals
Automation Control System	SCADA-5000	1	Achieve full automation monitoring and control

Project Outcomes

Upon completion, the water supply system’s quality met the U.S. Federal Drinking Water Standards, with specific outcomes including:

Water Quality Stability: Stable water quality, with turbidity, color, pH value, and other indicators meeting standard requirements.
Water Supply Capacity: Met the city’s daily water needs, with peak supply capacity reaching 120,000 m³/d.
Energy Efficiency: Adoption of advanced reverse osmosis technology and UV disinfection resulted in high energy efficiency and low operating costs.
Automation Level: The system achieved full automation control, reducing manual intervention and improving operational efficiency.