Scale Control Made simple. Photo taken after pipe was filled with Struv-Free solution half way for 24 hrs. Typical struvite growth.

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Presentation transcript:

Scale Control Made simple

Photo taken after pipe was filled with Struv-Free solution half way for 24 hrs. Typical struvite growth

- Essential components of Struvite are generally available in most wastewater. - Struvite forms in digesters, centrate lines, turbulent flow areas, pipes, tanks, valves, centrifuges, etc. - Struvite is very stable and immune to breakdown with strong acids, strong bases, chelant, and oxidizers. - Options for removal have been primarily physical breaking and chipping. Equipment and pipe replacement has been the common and very costly solution.

Struv-Free ST-2520 ST-2520 is a specially formulated product designed ST-2520 is a specially formulated product designed to remove ‘struvite’ (magnesium ammonium phosphate) deposits which form in wastewater treatment facilities. to remove ‘struvite’ (magnesium ammonium phosphate) deposits which form in wastewater treatment facilities. ST-2520 is a mild product which is easy to use and safe ST-2520 is a mild product which is easy to use and safe to apply. With an application ratio of 1.5 – 2 moles of to apply. With an application ratio of 1.5 – 2 moles of ST-2520 to 1 mole of struvite it has proven to remove ST-2520 to 1 mole of struvite it has proven to remove deposits in lines and tanks within hours. deposits in lines and tanks within hours. Furthermore, used in PPM (parts per million) range, ST2520 can inhibit formation of Struvite. ST2520 has proven to be safe on all substrates encountered, including equipment, valves, pipes, seals, etc. Furthermore, used in PPM (parts per million) range, ST2520 can inhibit formation of Struvite. ST2520 has proven to be safe on all substrates encountered, including equipment, valves, pipes, seals, etc.

Physical Properties ► TypeMildly Acidic Cleaner ► ColorLight Straw ► DensityRange1.22 – 1.26 ► Flash PointNone ► pHRange3.00 ± 0.5

ST-2520 Test The following test shows that Struvite can be effectively removed in place with a safe and efficient cleaning solution. We start with and then proceed to eliminate the Struvite in this experiment (as shown in the following photos) with 1 initial chemical addition and 1 interim chemical addition (to control pH and concentration). This results in taking the Struvite brick from 41 grams to 1 gram within an 8 hour period. We start with and then proceed to eliminate the Struvite in this experiment (as shown in the following photos) with 1 initial chemical addition and 1 interim chemical addition (to control pH and concentration). This results in taking the Struvite brick from 41 grams to 1 gram within an 8 hour period.

TIMEpHWEIG HT 0:

Challenges of Scale in Oilfield - Essential components of well-scale are naturally occurring and also process added. - Scale forms readily and is a persistent issue. - Scale has been treated with strong acids, strong bases, chelant, and oxidizers. These have serious issues for safety and corrode the valuble infrastructure. Equipment and pipe replacement has been the common and very costly solution.

- Safe to apply and use. - Rapidly dissolves well-bore scale, corrosion by products such as rust. - Is not exothermic when applied. - Does not donate chlorides and salts to the effluent. - Safe to the infrastructure including pipes, seals, pumps. - Non hazardous and non-DOT regulated.

Eco-Blast Physical Properties ► TypeMildly Acidic Cleaner ► ColorClear - Light Straw ► DensityRange1.18 – 1.21 ► Flash PointNone ► pHRange3.0 ± 0.5 ► Freeze Point 20° F.

Scaled up Well-Bore Pipe Pipe sample from a well, removed due to total scale fouling

Clean Well-Bore Pipe Well –Bore Pipe after soaking in 50% Eco-Blast for 20 minutes

Struv-Free & Eco-Blast Guard Products th Ave, Oakland, California