Treatment Guidelines for AQUA-CLEAR® MGA Modified Granular Acid

Description

AQUA-CLEAR® MGA dry blend of granular acid and additives are used in the removal of iron, manganese and carbonate scale. It retains strength longer than most liquid acids, which increases its cleaning capability.

Applications/Functions

• Can disperse scale and incrustation
• Can remove scale and incrustation from the water well screen, casing, gravel pack and pumping equipment
• Can restore well production
• AQUA-CLEAR MGA acid can be used in combination with AQUA-CLEAR® AE acid enhancer to remove more difficult scale and incrustation

Advantages

• Safe to use on all plastics, rubber, and metals
• No harmful vapors
• Helps improve water quality (color, taste, and appearance)
• Helps reduce equipment and piping failures due to scale build-up and corrosion
• Helps reduce pumping costs

Typical Properties

• Appearance - Free-flowing, off-white granules
• Specific gravity - 2.00
• pH (10% solution) - 0.9
• Solubility in water - Complete with slight to hazy turbidity

Recommended Treatment

• Record initial well water pH
• The preferred application method is to apply a solution of AQUA-CLEAR MGA acid into the screened interval through a tremie pipe.
• Mix AQUA-CLEAR MGA acid with water at one pound per gallon of water or 0.12 kilograms per liter of water and apply directly into the screened interval with a tremie pipe. When utilizing this method, calculate the volume of water in the screened area and double the calculated volume to account for the water in the gravel pack and formation interface.

Note:
The previous concentration of AQUA-CLEAR MGA acid is recommended for a complete reconditioning of an existing well.

Calculation for volume in well:

Gallons per foot = (diameter, inches)2 x 0.042

Liter per meter = (diameter, millimeters)2 x 0.0008

Displace solution into the well screen and formation, then surge, swab, agitate or jet well through screen and gravel pack for 20-30 minutes.

Allow to stand in well for up to two hours and then repeat activity approximately every two hours for a period of 24 hours.

Pump well to waste until well water pH is within 0.5 of original well pH.

Note: Wastewater can be neutralized by adding soda ash or lime

Chlorinate well and reconnect to the water distribution system.

Caution: Never mix chlorine and AQUA-CLEAR MGA acid in well

If necessary, AQUA-CLEAR MGA acid may be poured directly into well as per treatment table, but results will not be as good as if applied in a dissolved form via a tremie pipe. The undissolved form will require more mechanical agitation.

Note:

Occasionally for heavily encrusted wells, it is desirable to brush or scrape the casing and screen, then pump or airlift the debris to waste prior to treating with acid.

The following charts recommend a concentration of AQUA-CLEAR MGA acid that is suitable for a typical maintenance treatment of an existing well.

AQUA-CLEAR MGA Acid Application Amounts per 10 Feet of Standing Water

AQUA-CLEAR MGA Acid Application Amounts per 10 Meters of Standing Water

Note:

The concentrations of AQUA-CLEAR MGA acid shown in the previous tables do not take into account the 100% excess volume required to compensate for the water present in the formation interface and gravel pack. The previous tables only account for the product concentration required for the volume of water occupying a 10 foot or 10 meter section of a given size of the screen.

For other diameters:

• Gallons per foot = (diameter, inches)² x 0.042
• Liter per meter = (diameter, millimeters)² x 0.0008
• Pounds of AQUA-CLEAR MGA acid = (gallons per foot x 8.34) x 0.026
• Kilograms of AQUA-CLEAR MGA acid = (liters per meter) x 0.026
• Double the calculated volume in order to take into account the water present in the gravel pack and formation interface.
• AQUA-CLEAR AE acid enhancer can be used with AQUA-CLEAR MGA acid for iron bacteria treatment. When used together, utilize one gallon of AQUA-CLEAR AE acid enhancer for every 10 pounds of AQUA-CLEAR MGA acid or 0.84 liters of AQUA-CLEAR AE acid enhancer for every kilogram of AQUA-CLEAR MGA acid.

Safety

AQUA-CLEAR MGA acid is safe to handle when in dry form, but when mixed with water it should be handled in accordance with recognized standard practices for handling corrosive and acidic materials (refer to Material Safety Data Sheet).

• Avoid skin and eye contact – flush with water
• Do not ingest and avoid prolonged inhalation
• When disposing of waste fluid make sure to comply with all federal, state and local regulations as applicable.

Packaging

AQUA-CLEAR MGA acid is packaged in 5-gal (19-liter) full opening pails with a snap on lid, containing 50-lb (22.7-kg).

Availability

AQUA-CLEAR MGA acid can be purchased through any QUIK-GEL® viscosifier distributor, or by contacting the Customer Service Department in Houston.

Order Department
(800) 735-6075
Toll Free: (281) 871-4612

Technical Service
(877) 379-7412
Toll Free: (281) 871-4613