Potable water plant operators face two major issues in the 21st century - raw water
quality and quantity. Approximately 2/3 of the systems in use today draw groundwater as
their source. The quality of source water can adversely impact the ability of the operator
to pump it to the surface for treatment prior to supplying customers with a product that
meets all regulatory requirements. Groundwater wells can become fouled due to silt and
clays, mineral precipitates, or non- pathogenic bacteria (biofouling). This fouling can
impede the pumping process, which reduces capacity and results in high operating
costs, as well as expensive maintenance or replacement well cost. This paper discusses the most common
causes of fouling that include: silts and clays; mineral precipitates; and, biological fouling. In the past, mechanical physical agitation, acid, and chlorine have all been used separately or in combination to address the above fouling problems. The paper discusses how, in order to adequately rehabilitate and meet the objective of returning a potable water well to its original capacity, the proper criteria must be met. A case study is presented on how the "Well-Klean Preblend" product was used to chemically rehabilitate a well in Lake Havasu City, Arizona.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 240 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 5 |
| Published : | 06/15/2003 |
