Rainwater Recycling

Reduce Industrial Water Consumption Through Rainwater Recycling

Wastech offers the only California Water Board-approved BACT system for rainwater recycling

Rainwater-Recycling

With water costs on the rise and drought conditions plaguing much of the United States, the need to reclaim and reuse rain/storm water has become an important part of water resource management for corporations as well as government agencies. As government regulation of industrial water usage gains momentum, “heavy users” are coming to the realization that the need to collect and re-use storm water will become increasingly necessary over the next several years as a means to reduce costs and avoid stiff fines and penalties.

“Rainwater harvesting” or “stormwater harvesting” isaccomplished by collecting rainwater runoff from facility parking lot and/or rooftop drainage systems. For industrial applications, collection and re-use of water lowers water consumption and, subsequently, cost of operation for the facility. With many government agencies charging greater and greater fees for over-use of water, recycling this water for re-use in facility processes presents a great economic incentive.

Wastech Controls & Engineering, Inc is a process systems integrator with 28 years of experience designing and manufacturing industrial wastewater treatment systems. In addition to its wide array of skid-mounted standard systems, Wastech recently installed the only California water board approved BACT system for water recycling and specializes in industrial systems for re-use of rain water.

Wastech rainwater systems consist primarily of the following components:

COLLECTION

Rainwater is collected from drains in a collection basin. The rainwater is then gravity fed or pumped from the collection basin to a storage tank or tanks. Often, below grade pump lift stations are utilized to pump the water to the storage tank(s) which may be located a significant distance from the collection point. Wastech has a wide variety of basins and pump lift stations for rainwater collection that can be located in a cement vault or designed for direct burial within a fiberglass basin. The pumps will generally be below-grade submersible pumps with solids-handling capabilities. Systems are offered with single, dual, or triplex pumps depending on the flowrates and customer pump sparing philosophy.

STORAGE

Storm water is temporarily held in tanks to balance supply and demand. Space limitations often decide collection volume. The size of the collection tank will depend on the design rate for the system. Wastech systems will include either standard polyethylene tanks or custom fabricated polypropylene tanks. The tanks may be skid-mounted, depending on size of the system. The collection tank is used in conjunction with the treatment skid to make the water suitable for re-use. The storage tanks will generally have a transfer pump or pumps to circulate the stored water through the treatment processes.

TREATMENT

Some degree of stored rainwater treatment is required for the majority of typical re-use applications. Depending on the potential end use for the water, advanced alternative treatment may be required. Regardless of how specialized the end use requirements, all applications require the water to be filtered to remove suspended solids. The water may also require treatment with ultraviolet light, sometimes in conjunction with chlorine injection to remove biological pathogens and prevent algae and other biological species from growing in the water. In some applications it may be necessary to add chemistry to control chlorine concentration. In other applications dye injection is required to identify the water at its use point as recycled water.

DISTRIBUTION

Following treatment, the water must be pumped to the point of use. Discharge pumps may be controlled with variable frequency drives (VFD) if pressure control is required. Depending on the size of the system, most discharge pumps can be mounted directly on the system skid. Discharge pumps can be the same pumps used for treatment circulation or they can be dedicated pumps for distribution. Wastech’s rainwater recycling systems are all fully automated and controlled by a UL-certified, PLC based industrial control panel will full color HMI.

Is a packaged rainwater recycling system right for you?

As manufacturing plants and industrial facilities install storm water recycling systems and convert to Zero Liquid Discharge (ZLD) processes, their need for new water reduces, they avoid stiff penalties, violations and fines, and their overallcost savings can be substantial. Installing a rainwater recycling system and/or converting to ZLD means significant liabilities to the plant and risky regulatory inspections associated with industrial discharge permits can be eliminated. All of these factors, when combined with the reduced or eliminated cost of industrial water usage, contribute directly to an organization’s bottom line.

Wastech’s Application Engineers can assist you in determining the ROI for installing a rainwater recycling system, introduce you to Zero Liquid Discharge options and help you calculate payoff. In many cases, a Wastech system can pay for itself in less than 12 months. Wastech can also assist you in the development of a custom process plan or specification.

More About Wastech

Wastech Controls and Engineering, Inc. is a leader in process integration, engineering and manufacturing of fully automated industrial process systems. Wastech's core strengths are its people and their experience in process oriented industries. Wastech directly employs all the engineering disciplines required to thoroughly design and commission the systems it develops. Our process, mechanical, electrical and control system engineers come from diverse backgrounds with a range of experience from facility design, manufacturing and construction that enable us to tailor our systems to meet the specific needs of our clients.

Wastech's highly skilled fabricators and assemblers are competent in welding all types of plastic, assembly of piping and equipment, and installation of analytical instruments. Our panel fabrication shop is certified for UL 508A and UL 698A industrial control panels, and is unrivaled in build quality. Wastech is a certified member of the Control Systems Integrators Association (CSIA). Wastech has an unparalleled and distinguished history of customer service and support for many years following systems start and commissioning. Wastech is committed to partnering with our customers during the sales, manufacturing and after sales cycles.

Check out Wastech's complete line of industrial engineered process systems

pH Adjustment Systems

Pump Lift Stations

Collection Cabinets

Chemical Dispense

Process Chilled Water Systems

Heavy Metal Removal Systems

Fluoride Removal Systems

Custom Process Skid

For more information about Wastech's products and services, please call (818) 998-3500 or email us at This email address is being protected from spambots. You need JavaScript enabled to view it..

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