Pilot tests have demonstrated that EHRSF can meet Surface Water Treatment Rule requirements.
No longer are turbidimeters the sole measurement method for water purity levels.
Wastewater is being reclaimed for non-potable uses. The use of this water is alleviating water shormance of the valve.
In addition, buried manually-actuated valves are easier to design and install if the operating valve shaft is horizontal and the gearbox input shaft is oriented toward the ground surface.
One concern with orienting the valve shaft axis horizontally is hydrostatic torque. Hydrostatic torque is a sizable operating torque component on large valves.
Faced with upgrading aging facilities, a Florida water utility decided to incorporate reverse osmosis.
As the discharge requirements for treated secondary effluent become more restrictive, effluent filtration is becoming a more integral part of secondary treatment. Because a high quality effluent is produced after filtration, the potential for reusing treated effluent is being examined by a number of municipalities, especially those in the water-short areas of the southwestern United States. A new concept of filtration in reuse applications and an innovative filter technology is being used to help alleviate some of these problems.
Effluent filtration is an integral part of secondary treatment as discharge requirements become more restrictive
The South Monmouth Regional Sewerage Authority's 9-mgd wastewater plant had been identified as a source of odors that bothered neighbors from time to time. As a result of work done on the plant's two trickling filters, which were shown to be the culprits generating the unpleasant odors, emissions from the filters have been significantly reduced and complaints of odors have been virtually eliminated.
A Philadelphia water company improved the performance of and reduced the operating costs of its filtration system with modernized high-rate gravity filters.
A metal plating business in Massachusetts has installed a pollution control system that treats the company's wastewater to the point that it is cleaner than most household wastewater.
A specialized pollution control system is used for pretreatment at a metal plating business in Massachusetts
The biologically enhanced carbon process is an option for many water utilities.
Located near Springfield, Massachusetts, the West Parish Filter Plant has a history of planned growth to meet area water supply requirements. By the late 1960s, demand projections to the year 2020 showed a need for plant capacity to increase to around 100 million gallons per day. This was met by construction of a new 60-mgd direct filtration plant that incorporates rapid sand filtration, and replacement of 8 of the 18 existing slow sand filters.
A 60-mgd direct filtration plant incorporates rapid sand filtration and replaces eight existing slow sand filters