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What size dilution tank do I need and how many lbs. of limestone would be required?

Product Description

Our neutralizing and dilution tanks are rotationally molded from virgin high density polyethylene conforming to ASTM D1248 for polyolefin materials.

Tanks can be used for service of 180°F in continuous service, or intermittent use of 212°F. Tops are bolted or fusion welded to the engineer’s specification,

with all fittings made of polyethylene and welded into all penetrations of tanks.

General Information

Neutralization of corrosive, toxic and flammable wastes is necessary to the environment and piping systems, even when quantities and concentrations

 are small. Such wastes can cause physical damage to a building’s piping or outside sewer systems and if effluent is being discharged to the

environment (such as rivers and lakes), severe damage can result to wildlife and water sources. Neutralization is the process whereby acids and

alkalis are rendered harmless. The degree of neutralization can be measured by a system known as pH (positive hydrogen ions). The degree of

measurement is a pH number of 7, which is neutral. Acids range from 0 to 6.99 and alkaline ranges from 7.01 to 14. The smaller the pH number, the

higher the content of acidic waste present. The higher the pH number, the higher the alkaline wastes.

Sizing Tanks

Sizing the correct neutralization tank for a project is done by relating the number of stations to be discharged through the system. In commercial and

 industrial laboratories the number of lab stations should be divided by two. Use this table as a guide.

Number of Lab Stations

Tank Size

Limestone Lbs.































Limstone Usage

Limestone chips are being used in numerous applications to help neutralize chemical bearing wastes (e.g. acid waste). After years of successful

neutralization, many states and local environmental plumbing codes call for the addition of limestone chips into acid neutralization basins, tanks,

or sumps. Water is added to the tanks to initiate the dilution process. We recommend the limestone chips be one to three inches in diameter size

range and have calcium carbonate content in excess of 90%. See above chart for approximate limestone needed.

Maintenance of tanks

Proper maintenance of neutralization tanks is essential for proper neutralization of wastes in the systems. Tanks must be cleaned out periodically

 of all sludge, debris and other material and must be checked for proper amount of limestone. A regular maintenance schedule of one to three

months should be observed, but more or less frequent inspection may be necessary in any particular case.

Title: What size dilution tank do I need and how many lbs. of limestone would be required?
Description: Information for selecting a dilution tank and instructions for usage
Published: 11/9/2010
Last Edited: 9/19/2013
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