Water Resource Recovery Facilities
Understanding ReWa’s Treatment Facilities
At ReWa we are dedicated to finding new ways to recycle one of our invaluable resources—water. A primary way we can protect this resource is to renew water each and every day. Clean water is water that is treated to nearly drinking water standards. This water, while it is not drinking water, supplements the flow of local rivers, where it supports aquatic life and helps other communities downstream to enjoy an abundance of water for recreational uses and production of drinking water. In fact, our own WRRF utilize clean water in the treatment process and this product is ideal for use in irrigation of lawns and fields.
Our WRRF Process
Since 1925 we have been treating wastewater and improving the quality of life in the Upstate. With eight WRRF and a 343 mile interceptor system, this is no easy job. The treatment process is complex, and is updated continually to make sure we are treating wastewater as effectively as possible. Our original WRRF used Imhoff tanks for treatment, but soon after aerated lagoons and trickling filters were added to treat the wastewater.
As treatment options began to advance, our process was updated. Biological nutrient removal (BNR) was introduced in the 1980’s. The treatment processes have since been updated frequently to increase efficiency and performance. The current WRRF process is a BNR process consisting of both anaerobic and anoxic zones with fine bubble aeration. Deep bed sand filters and ultraviolet disinfection complete the wastewater treatment process. Our WRRF use anaerobic digestion to produce biosolids, which are applied in liquid form on local farm acreage. Methane gas from the digestion process is recovered and used in the electricity generation process.
The infographic below illustrates our process, and provides an in-depth view of how each part of the process works.