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Stormwater Harvesting
Oldcastle Precast’s Storm Capture Reuse System is a total stormwater management system
What is Stormwater Harvesting?
Instead of simply detaining stormwater, water harvesting is the collection, storage, cleaning, and recycling of stormwater to replace or reduce the consumption of municipal potable water.
Why harvest stormwater?
The most obvious answer is to provide a return on investment in stormwater management. Most development projects require some form of stormwater detention. A stormwater harvesting system changes what is a complete expense, into something that can actually provide a return on the investment.
- Lower your building’s operational expenses by reusing stormwater and rainwater
• Take what is free to offset something you have to buy.
- Gain LEED points for your project
• Click here for more info on how Storm Capture can add LEED points under the U.S. Green Building Council guidelines.
- Meet Low Impact Development (LID) requirements
• The new environmentally friendly development trend is for post-construction runoff volume to be the same or less than predevelopment runoff volume.
- Protect the environment
• Clean, fresh water is a limited natural resource. We have the same amount of water on earth now as when the dinosaurs were here. We need it to live and we use it in the production of many consumable products. |
Harvested stormwater applications
For commercial office buildings, shopping centers and schools, harvested stormwater can typically be used in over 80% of the potable water usage applications. For hospitals and restaurants, reuse applications are in the 30% to 50% range. General reuse applications include:
- Landscape irrigation
• The simplest and perfect application for stormwater reuse is for irrigating grass and plants surrounding any facility.
- Cooling towers
• Evaporative cooling towers use a lot of water. Since these are typically on the roof, they are often overlooked for reuse applications.
- Toilet flushing
• Depending on the facility, toilets can account for 15- 20% of potable water usage.
- Fire suppression systems
• Hopefully, fire suppression is not something that ever has to be used in your facility. But if it does, it is another perfect application for harvested stormwater.
Typical System Schematic (click to enlarge)
Oldcastle Precast and Wahaso provide a complete packaged Storm Capture Reuse System. Our services and system components include:
- Estimate and Scope
• Based on information you provide, we will generate a total system estimate and scope of work.
- Design and Specifications
• A complete design is generated with detailed specifications.
- Primary Filtration and Storage
• Depending on the sources of water and other project conditions, we provide primary screening/filtration, and a cistern sized specifically for stormwater storage at the facility.
- Sterilization and Stabilization
• Typically, some form of disinfection is required to eliminate bacteria. Simple methods to accomplish disinfection include chlorine and ultraviolet light.
- Final Filtration
• Depending on application, a filtration system is used to remove finer contaminants.
- Pressurization
• Booster pumps are used to maintain pressure required for water supply to the facility.
- Controls
• For problem free service, the system is managed and monitored by a control system that will track items like pressures and cycle times, as well as provide feedback on maintenance items. Controls can be fully integrated with other building automation controls.
- Deliverables
• Treatment equipment is pre-assembled on skids and factory tested so that it can be quickly and easily assembled on-site.
• We provide Installation and Operation & Maintenance Manuals
• We can be on site for treatment equipment assembly (although the plumbing subcontractor usually performs this work), start-up, as well as to perform maintenance training for building staff.
• Systems are low-maintenance and therefore, maintenance is typically performed by local building staff.
Please download the Storm Capture brochure below:
More information about Wahaso (Water Harvesting Solutions) is available at www.wahaso.com.
