USCAPW-LOC11.004 | Potable Water Storage Reservoirs

Application:

Potable Water

Keywords:

California, potable , cement rectangular, stratification, nitrification, breakpoint chlorination, chloramine

SolarBee Installation

Sliding hatch

SolarBee Equipment

Reservoir Size:

Surface area is 11.2 surface acres and maximum depth is 30 feet when full. Operating volume is 90 million gallons. There are 1000 roof support columns in the reservoir.

SolarBee Installation:

Date: August 2002: Installed two (2) SB10000-PW 10,000 circulators with 24-hour electric kits, and with horizontal intake plates set at one foot off the reservoir floor. In May 2005, both units were upgraded to the SB10000v12-PW model. At the same time, an injection manifold was mounted on the outside of each dish to facilitate even dispersal for chlorine boosting and breakpoint chlorination (if needed) after system converted to chloramine.

Project Objectives:

Sunset South had a history of stratification problems, short circuiting, high water age, and dead zones that lead to high nitrification potential. Primary goal is to provide complete mixing in order to reduce water age and prevent nitrification.

Project Results:

In August 2002, the City and a leading drinking water consultant began an extensive, 18-month study on the effects of operating just one SolarBee SB10000-PW in the reservoir. The reservoir was allowed to stratify without either SolarBee operating, chlorine was injected into the reservoir, and then one SolarBee was turned on. Data from chlorine and temperature probes located at various depths throughout the reservoir showed that just one SolarBee was sufficient to eliminate stratification, boost chlorine, and accomplish breakpoint chlorination. By May 2005, the City had purchased the two test machines. The City has been very happy with the water quality benefits SolarBee circulation has provided.

Last updated at: 2009/12/10