Standard Guide for Measuring the Saturated Hydraulic Conductivity of Paper Industry Sludges

Importancia y uso:

4.1 This guide is intended to supplement the methods and procedures described in Test Methods D5084. When following the recommendations in this guide to test paper sludges, all assumptions and limitations described in Test Methods D5084 apply.

4.2 This guide only applies to hydraulic conductivity tests on paper industry sludges where one-dimensional laminar flow of water is imposed using a flexible-wall permeameter.

4.3 The hydraulic conductivity of sludges, and other porous materials, generally decreases as the degree of water saturation decreases. This guide applies only to water-saturated sludge containing negligible amounts of gas.

4.4 This guide applies only to permeation of paper industry sludges with water. Information on testing porous materials with liquids other than water can be found in Test Method D7100.

4.5 The hydraulic conductivity of paper sludge measured in the laboratory following Test Methods D5084 and the recommendations in this guide may or may not be comparable to the hydraulic conductivity of in-place sludge. The issue has not been fully investigated. Therefore, the results should be applied to field situations with caution and by qualified personnel.

Note 1: The quality of the result produced when using the recommendations in this guide depends on the competence of the personnel performing the testing and the suitability of the equipment and facilities that are employed. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this guide are cautioned that compliance with Practice D3740 does not in itself ensure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.

Subcomité:

D18.04

Volúmen:

04.09

Número ICS:

13.030.20 (Liquid wastes. Sludge)

Palabras clave:

cap; coefficient of permeability; cover; fiber clay; hydraulic barriers; hydraulic conductivity; landfill; paper clay; paper sludge; papermill sludge; permeability; permeameter;