As a pioneer of membrane technology, Veolia
leverages decades of research, development, and
operational experience in developing one of the most advanced pressurized ultrafiltration technology in the market, ZeeWeed 1500. ZeeWeed systems are proven to consistently outperform conventional filtration technology while meeting or exceeding regulatory requirements, regardless of source water quality.
Typical Applications
Versatile and reliable, the pressurized ZeeWeed
1500 is ideally suited for use in numerous
applications including drinking water treatment,
tertiary filtration and RO pre-treatment for brackish
water and seawater. Compared to granular filter
media, ZeeWeed membranes produce superior
water quality and are virtually unaffected by variable raw water quality - all at a cost comparable to
conventional filtration technology
ZeeWeed Hollow-Fiber Membranes
Veolia’s pressurised ZeeWeed 1500 membrane is ideal for drinking water treatment, tertiary filtration and pretreatment applications for brackish and seawater desalination.
This membrane utilizes low-fouling PVDF membrane chemistry, resulting in less frequent and less aggressive cleaning.
The ZeeWeed 1500 membrane is optimal for packaged plants with quick delivery and installation, and is also available as a custom solution engineered to specifications.
A Water Filtration Plant is a facility designed to treat and purify water from various sources, such as rivers, lakes, wells, and municipal supplies, to make it safe for drinking, industrial use, or other purposes. These plants play a crucial role in ensuring water quality and protecting public health by removing contaminants.
Key Components and Processes:
Intake Structure:
The plant starts by drawing water from a source, typically via intake structures like pipes, channels, or screens to filter out debris and larger particles.
Screening:
Large debris, such as leaves, sticks, and sediment, are removed at the intake using screens.
Coagulation and Flocculation:
Chemicals such as alum or ferric chloride are added to the water to cause fine particles to clump together (flocculate). These larger particles then settle out during sedimentation.
Sedimentation:
Water is allowed to stand in large settling basins or tanks where the clumped particles (flocs) settle to the bottom. The clarified water moves on to the next treatment stage.
Filtration:
The water is filtered through sand, gravel, and other media to remove any remaining particles. Different types of filters may be used, including:
Slow Sand Filters: Provide a biological barrier as microorganisms grow on the sand and consume contaminants.
Rapid Sand Filters: Use a multilayer sand and gravel filter that provides mechanical and biological filtration.
Activated Carbon Filters: Used to remove chlorine, pesticides, herbicides, and other chemicals that remain after coagulation.
Disinfection:
Chlorine, ozone, or ultraviolet (UV) light is added to kill any remaining bacteria, viruses, and pathogens in the water, ensuring it is safe for human consumption.
Fluoridation (if required):
Some plants may add fluoride to the water to prevent dental cavities.
pH Adjustment:
Chemicals like lime or carbon dioxide are added to adjust the pH level of the water to make it more neutral or suitable for its intended use.
Technologies Used:
Reverse Osmosis (RO): Used to remove dissolved solids and heavy metals from water.
Microfiltration and Ultrafiltration: Used for removing fine particulate matter and microbes.
Ozonation: An effective method for removing organic pollutants and providing a final stage of disinfection.
Applications:
Municipal Water Supplies: Treatment of water supplied to households and businesses.
Industrial Use: Water used in manufacturing, power generation, and cooling systems.
Agricultural Use: Irrigation and livestock watering where quality control is important.
Benefits:
Improved Health: Provides clean drinking water by removing harmful contaminants and pathogens.
Reduced Waterborne Diseases: Decreases the incidence of diseases such as cholera, typhoid, and dysentery.
Compliance with Regulations: Ensures water meets local and international quality standards.
Sustainability: Protects natural water resources and promotes efficient water use through recycling and reuse where possible.
Challenges:
Maintenance and Upgrading: Regular maintenance is required to keep the filtration and disinfection systems functioning optimally.
Cost: Building and operating filtration plants can be expensive, especially in areas with scarce resources.
An Industrial Water Treatment Plant is a facility designed to treat water used in industrial processes to meet specific quality standards. These plants are essential for ensuring that water used in manufacturing, production, cooling, and other industrial applications does not contain contaminants that could damage machinery, affect product quality, or pose environmental and health risks.
Key Components and Processes:
Pretreatment:
Screening: Removes large particles, debris, and suspended solids from raw water.
Clarification: Coagulation and flocculation processes to agglomerate suspended solids, making them easier to remove through sedimentation.
Filtration: Sand or multimedia filters to further clean water by removing fine particles.
Primary Treatment:
Chemical Treatment: Addition of chemicals like coagulants, flocculants, and pH adjusters to neutralize impurities.
Sedimentation: Allows particles to settle and separate from the water through gravity.
Secondary Treatment:
Biological Treatment: Utilizes bacteria and other microorganisms to break down organic pollutants through processes like activated sludge or trickling filters.
Aeration: Increases oxygen levels in water to enhance the biological activity of microorganisms.
Tertiary Treatment:
Advanced Filtration: Uses carbon filters, membranes (RO, UF), or advanced media filters to remove dissolved chemicals, pesticides, and heavy metals.
Disinfection: UV light, chlorine, or ozone are used to kill bacteria, viruses, and pathogens.
Water Recycling and Reuse:
Systems that treat and recycle water for industrial uses, such as cooling, boiler feed, and irrigation, minimizing water waste.
Sludge Management:
Systems for handling and disposing of sludge generated from treatment processes, often involving thickening, dewatering, and disposal through landfill, incineration, or other methods.
Technologies Used:
Reverse Osmosis (RO): Highly effective for desalination and removing dissolved solids.
Ion Exchange: For demineralization and removal of specific ions (e.g., calcium, magnesium).
Ultraviolet (UV) Systems: To disinfect water by inactivating pathogens.
Ozonation: To eliminate contaminants and improve water taste and odor.
Carbon Filtration: To remove chlorine, volatile organic compounds (VOCs), and pesticides.
Benefits:
Compliance with Regulatory Standards: Ensures that discharged water meets environmental regulations.
Improved Equipment Lifespan: Reduces scaling, corrosion, and wear in industrial machinery.
Cost Savings: Reduces water and wastewater treatment costs through efficient water use and recycling.
Environmental Protection: Minimizes the impact on natural water bodies by reducing pollutants and conserving water resources.
Applications:
Power Generation: Cooling water treatment to prevent mineral build-up in turbines.
Food and Beverage: Ensures water is free from harmful microorganisms and contaminants.
Textiles: Maintains color fastness and quality by removing chemicals and impurities from dyeing processes.
Chemicals and Pharmaceuticals: Provides ultrapure water for processes like distillation and washing.
