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Project Profiles

Sand Separator in Municipal Water Systems

The city of Madison, Indiana was experiencing sand problems with their No. 3 and No. 4 water wells. After several unsuccessful attempts to correct the problem, both wells were shut down. Aquastream was called in to evaluate the situation and recommended the installation of an Aquastream sand separator unit in each well.

Before shutdown, well No. 3 was producing sand at outputs of 100 gpm and above. After treatment and well redevelopment, the Aquastream Suction Flow Control Device, a sand separator, was installed. Within two hours, the well was producing 1200 gpm sandfree. Specific capacity increased from 54 to 112 gpm/ft with a 10-15% reduction in electrical input. Installation of the simple device saved the city over $50,000.


 

Due to the deteriorating condition of well No. 4 no redevelopment was performed. After the Aquastream sand separator was installed, light surging and slow rate pumping were required to stabilize the loose sand present in the gravel pack. A gradual increase in the pumping rate provided excellent results. Again, the city saved significant money and salvaged this well.

 

Excessive pumping of sand had ruined a submersible water well pump for the city of Lone Grove, Oklahoma. The gravel pack surrounding the well screen was being drawn through enlarged slots in the screen. Installation of an Aquastream was recommended to eliminate the problem.

Before the installation, Sonar Jet treatment was performed to clean the well screen and repair the gravel pack. After the Aquastream sand separator and a new submersible pump were installed, well production increased from 100 gpm to 125 gpm. Better quality, sand-free water was also provided. This solution saved the city from having to install a new well.

 

The community of Auburn, Florida experienced spalling of sand and shell rock in one of their open-hole wells, creating highly turbid water. The situation was evaluated and the installation of an Aquastream Suction Flow Control Device was recommended.

The well was cleaned and an Aquastream sand separator slightly smaller than the diameter of the well was installed. This unit serves a two-fold purpose by acting as a barrier should another cave-in occur and redirects the water velocity without decreasing pumping capacity. The Aquastream sand separator eliminated the need to install a well screen and gravel pack that could have reduced pumping capacity by up to 50%.

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