A $14 million plan to control odors coming from the Central Valley Water Reclamation Facility near 800 West and 3300 South is under consideration by the facility's board of directors.
But before the board takes action, it wants endorsements from the seven entities that make up the agency. They include the Cottonwood Sanitary District, Salt Lake City Suburban Sanitary District No. 1, Granger-Hunter Improvement District, Murray City, South Salt Lake, Kearns Improvement District and Taylorsville-Bennion Improvement District.The plan involves installing devices to infuse chemicals into the waste water before it reaches the plant, and covering the plant's three trickle filters. A consulting report says covering the filters and controlling temperatures could enhance conditions that promote the natural elimination of ammonia from the waste water. The ammonia reaction is a prime factor in the odor problem.
Central Valley has three years left on its current discharge permit, and officials expect that gaining a new permit for releases into the Jordan River will be difficult to obtain unless steps are taken to meet stricter federal regulations included in the new federal Clean Water Act.
The district has $550,000 available in the current budget for water quality improvement efforts. That would be enough to get construction of the filter covers under way. Covering the filters is expected to cost about $2 million.
If covering the filters results in significant natural ammonia removal - a process called nitrification - Central Valley may be able to scale back other planned improvements included in the $14 million estimate.
The board directed staff to meet with the general managers of the seven member districts to solicit support before the board makes a decision on the consultant's proposal.
The board is also planning a May trip to Colorado to visit water reclamation sites there that have installed scrubbers to reduce ammonia levels.