HCWA - SEWERAGE SYSTEM
The Georgia Association of Water Professionals (GAWP) awarded Henry County Water Authority (HCWA) with the 2017 Collection System Excellence Award, which places HCWA atop the list of the very best systems in the state of Georgia.
In addition, the Authority's Walnut Creek Water Reclamation Facility received Plant of the Year Award for 2017 and 2015 along with Indian Creek for 2011 and Bear Creek for 2014 and 2016. The Walnut Creek Laboratory won the Wastewater Laboratory of the Year Award in 2011. Bear Creek and Walnut Creek L.A.S. also won the Platinum Award for 2015 and 2016. These awards reflect standards of excellence evident at the facilities and within the operations of HCWA.
The Bear Creek facility, constructed in 1997 and expanded in 2009, has a rated treatment capacity of 1.25 MGD. Bear Creek Las facility has 230 wetted acres, a 2.4 MG and a 14 MG holding pond, for a total of 16.4 MGs. That treated wastewater is land applied through 1,360 spray heads. The Bear Creek facility serves the utilities largest commercial account the Atlanta Motor Speedway.
The Indian Creek Water Reclamation Facility came online in November of 2001. Phase I of the facility provides the HCWA with 1.5 MGD of wastewater treatment capacity. Indian Creek sprays treated wastewater on 213 acres, has an 18 MG treated wastewater holding pond, and 1,329 spray heads. This facility is currently under construction to expand to a 3 MGD direct discharge facility. Once completed the treatment process will be utilizing the latest MBR technology to produce water that meets or exceeds all EPA standards. The construction is scheduled to be completed in July 2018.
The Walnut Creek Water Reclamation Facility has been called "the backbone of the sewerage system" in Henry County. The facility is the largest facility of the HCWA sewer operations. Recently expanded, it currently offers 8 MGD of wastewater treatment capacity. The Walnut Creek Facility utilizes approximately 1,040 acres of forested land to spray the treated wastewater from two holding ponds having a total storage volume of approximately 80 Million Gallons. The treated wastewater is land applied with irrigation using over 8,000 spray heads. A new ATAD digester (Autothermal Thermophilic Aerobic Digester) is now being employed to produce a reduced sludge volume, pathogen free, and class A bio-solid that has many environmental friendly uses. The Walnut Creek facility also houses the HCWA laboratory for sewerage system quality control, as well as the Authority's sewerage system departmental offices.
COLLECTION and CONVEYANCE
The HCWA wastewater collection and conveyance system consists of 32 wastewater lift stations and approximately 455 miles of collection sewers. The collection and conveyance system uses a range from 8-inch to 54-inch sewer lines. Trunk sewers, the largest lines, are made out of reinforced concrete or ductile iron pipes, while a percentage of the smaller collector sewers are made of PVC pipe.
Approximately one-third of the sewers in the HCWA system are 20 years old or older, but the Authority has an aggressive capital improvement program for renewal and replacement of assets as needed. The HCWA collection and conveyance system also has standby pumps and auxiliary generators for safe operation even in the event of emergencies, such as electrical power outages.
All of the Authority's sewer lines are designed for sanitary sewage, and they are inspected on a rotating basis, annually, meaning every line is inspected at least every two years. The HCWA sewer line inspection process involves visual manhole inspection and closed circuit TV inspections of existing lines. Air testing, TV and visual manhole inspections are conducted on new lines. Trouble spots in the HCWA sewerage system are identified through flow meters and increased maintenance inspections.