HOW and WHY do we manage DRINKING WATER PRODUCTION?
Summary
TLDRVeolia is dedicated to improving resource access while ensuring their preservation and replenishment. They produce drinking water by extracting it from natural environments and groundwater, using tailored water treatment technologies that meet public-health standards. The process involves screening, coagulation, sedimentation, filtration, and disinfection with methods like ozone, chlorine, or ultraviolet rays. Continuous monitoring and adjustments maintain water quality, ensuring it's safe for human consumption before distribution.
Takeaways
- 💧 Veolia is dedicated to improving access to water resources while ensuring their preservation and replenishment.
- 🚰 They produce drinking water daily to meet people's needs and secure long-term supplies.
- 🌐 Veolia's water treatment technologies are adapted to local conditions and adhere to public health standards.
- 🏞️ Water is sourced from natural environments like rivers, lakes, and groundwater tables.
- 🔍 Long-term resource protection involves monitoring water availability, quality, and extraction volumes.
- 🚫 A screen at the water intake prevents large objects from entering the water supply.
- 🔄 The water is pumped to treatment plants where suspended matter is removed through screening and coagulation.
- 🌀 Coagulants are added to bind dust and soil particles into flocs, which are then settled out in a pond.
- 💦 Clean water is harvested from the surface, and further filtered through sand or other materials.
- 🛡️ Disinfection is achieved using ozone, chlorine, or ultraviolet rays to eliminate viruses and bacteria.
- 🔬 A final chlorine dose is added for safety, and sensors and analyses are used to continuously monitor water quality.
- 🏡 The treated water is safe for human consumption and can be stored in tanks before distribution.
Q & A
What is Veolia's main objective in terms of water management?
-Veolia's main objective is to improve access to resources while preserving and replenishing those resources, particularly focusing on producing drinking water to meet people's needs and securing supplies over the long run.
How does Veolia ensure the water treatment technologies meet public-health standards?
-Veolia tailors its water treatment technologies to local conditions and ensures they all meet public-health standards through a series of processes including screening, coagulation, sedimentation, filtration, and disinfection.
What methods does Veolia use to extract water from natural environments?
-Veolia extracts water from natural environments such as rivers, lakes, and groundwater tables, and measures and monitors water availability, quality, and extracted volumes over time to protect the resource.
What is the purpose of the screen covering the water intake?
-The screen covering the water intake is used to block the largest objects and solid waste, preventing them from entering the water supply.
How does the coagulant process work in water treatment?
-A coagulant is added to the water, causing dust, soil particles, and other residual materials to gradually combine into clots called 'flocs'. These flocs are then dragged to the floor of a settling pond by gravity and removed.
What is the role of filtration in the water treatment process?
-Filtration is a key step in the water treatment process where one or several thick layers of sand capture the finest materials, and in some cases, activated carbon or porous membranes are used to ensure the water is clean.
How does Veolia disinfect the water, and what are the methods used?
-Veolia disinfects the water using ozone, a gas that destroys viruses and bacteria. Other methods include using chlorine or ultraviolet rays.
Why is chlorine added at the end of the treatment process, and how much is added?
-Chlorine is added at the end of the treatment process to prevent microorganisms from developing while the water is in the network. Veolia adds one drop of chlorine for the equivalent of five bathtubs of water.
How does Veolia monitor and maintain water quality throughout the treatment process?
-Veolia uses sensors and runs analyses to monitor water quality at each step in the treatment process, adjusting it as required to ensure the water is fit for human consumption.
What happens to the water after it is deemed fit for human consumption?
-Once the water is fit for human consumption, it is stored in tanks before being distributed to consumers.
Outlines
💧 Water Treatment and Supply at Veolia
Veolia is dedicated to improving access to water resources while ensuring their preservation and replenishment. They produce drinking water that not only meets daily needs but also maintains supply for the long term. The company employs water treatment technologies that are customized to local conditions and adhere to public health standards. Veolia extracts water from natural environments like rivers and lakes or from groundwater tables, and they monitor water availability, quality, and extraction volumes to protect the resource. The water is treated through a series of steps including screening, pumping, coagulation, sedimentation, filtration, and disinfection using ozone, chlorine, or ultraviolet rays. A final step involves adding a small amount of chlorine to prevent microbial growth in the distribution network. Throughout the process, sensors and analyses are used to monitor and adjust water quality. The end result is potable water that is safe for human consumption, which can be stored in tanks before distribution.
Mindmap
Keywords
💡Access to Resources
💡Preservation
💡Replenishing Resources
💡Water Treatment Technologies
💡Local Conditions
💡Public-Health Standards
💡Water Intake
💡Coagulation
💡Filtration
💡Disinfection
💡Chlorine
💡Sensors and Analyses
Highlights
Veolia's mission is to improve access to resources while preserving and replenishing them.
Daily production of drinking water to meet people's needs and secure long-term supplies.
Water treatment technologies are customized to local conditions and adhere to public health standards.
Efforts to bring water to areas lacking it and to protect the environment.
Water is extracted from natural environments like rivers, lakes, or groundwater tables.
Long-term resource protection through monitoring water availability, quality, and extraction volumes.
Use of screens at water intake to block large objects.
Pumping and channeling water to drinking water production plants.
Removal of suspended matter through screens and rakes.
Addition of coagulant to bind dust and soil particles into flocs.
Gravity-driven settling of flocs in a large pond for removal.
Harvesting clean water from the surface using a system of inlets.
Water filtration using layers of sand or activated carbon and porous membranes.
Disinfection of water with ozone, chlorine, or ultraviolet rays to destroy viruses and bacteria.
Final chlorination step to prevent microorganism development in the water distribution network.
Use of sensors and analyses to monitor and adjust water quality at each treatment stage.
The resulting water is safe for human consumption and can be stored for distribution.
Transcripts
Improving access to resources, while preserving
and replenishing those resources, is what we do at Veolia.
Each day, we produce drinking water to cover people’s needs,
while securing supplies over the long run.
The water treatment technologies we use are tailored to local conditions,
and they all meet public-health standards, bring water to the places
that lack it, and protect the environment.
Here’s how and why, at a glance.
We extract water in natural environments – rivers or lakes for example.
We can also draw it from groundwater tables.
To protect this resource over the long term, we measure and monitor water availability,
quality and extracted volumes over time.
A screen covering the water intake blocks the largest objects.
Then we pump the water and channel it to the drinking water production plant.
First, we remove the suspended matter in the water.
Here, screens block the solid waste and rakes then lift it out.
Then we add a coagulant to the water.
The dust, soil particles and other residual material gradually combine into clots,
which are called “flocs”
Gravity drags these flocs to the floor of a large settling pond, and we remove them.
Meanwhile, a system of inlets harvests the clean water at the surface.
Then we filter the water.
This is the key step during this first phase.
One or several thick layers of sand capture the finest materials.
In some cases, activated carbon or porous membranes can also be used.
Then we disinfect the water with ozone, a gas that destroys viruses and bacteria.
We can also do this with chlorine or ultraviolet rays.
Lastly, we add one drop of chlorine for the equivalent of five bathtubs of water.
Chlorine prevents microorganisms from developing while the water is in the network.
We use sensors and run analyses to monitor water quality, and adjust it if and as required,
at each step in the treatment process.
Now the water is fit for human consumption, meaning it is perfectly safe to drink.
We can store it in tanks before we distribute it to consumers.
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