If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    ASTM D1987 - 18

    Standard Test Method for Biological Clogging of Geotextile or Soil/Geotextile Filters

    Active Standard ASTM D1987 | Developed by Subcommittee: D35.02

    Book of Standards Volume: 04.13

      Format Pages Price  
    PDF 6 $54.00   ADD TO CART
    Hardcopy (shipping and handling) 6 $54.00   ADD TO CART
    Standard + Redline PDF Bundle 12 $64.00   ADD TO CART

    Significance and Use

    5.1 This test method is performance oriented for determining if, and to what degree, different liquids create biological activity on geotextile filters thereby reducing their flow capability. The use of the method is primarily oriented toward landfill leachates but can be performed with any liquid coming from a particular site or synthesized from a predetermined mixture of biological microorganisms.

    5.2 The test can be used to compare the flow capability of different types of geotextiles or soil/geotextile combinations.

    5.3 This test will usually take considerable time, for example, up to 1000 h, for the biological activity to initiate, grow, and reach an equilibrium condition. The curves resulting from the test are intended to indicate the in situ behavior of a geotextile or soil/geotextile filter.

    5.4 The test specimen can be incubated under nonsaturated drained conditions between readings, or kept saturated at all times. The first case allows for air penetration into the flow column and thus aerobic conditions. The second case can result in the absence of air, thus it may simulate anaerobic conditions.

    5.5 The flow rate can be determined using either a constant head test procedure or on the basis of a falling head test procedure. In either case, the flow column containing the geotextile or soil/geotextile is the same; only the head control devices change.

    Note 1: It has been found that once biological clogging initiates, constant head tests often pass inadequate quantities of liquid to accurately measure. It thus becomes necessary to use falling head tests, which can be measured on the basis of time of movement of a relatively small quantity of liquid between two designated points on a clear plastic standpipe.

    5.6 If the establishment of an unacceptably high degree of clogging is seen in the flow rate curves, the device allows for backflushing with water or with water containing a biocide.

    5.7 The resulting flow rate curves are intended for use in the design of full scale geotextile or soil/geotextile filtration systems and possible remediation schemes in the case of landfill lechate collection and removal systems.

    1. Scope

    1.1 This test method is used to determine the potential for, and relative degree of, biological growth which can accumulate on geotextile or geotextile/soil filters.

    1.2 This test method uses the measurement of flow rates over an extended period of time to determine the amount of clogging.

    1.3 This test method can be adapted for nonsaturated as well as saturated conditions.

    1.4 This test method can use constant head or falling head measurement techniques.

    1.5 This test method can also be used to give an indication as to the possibility of backflushing, biocide treatment, or both, for remediation purposes if biological clogging does occur.

    1.6 The values in SI units are to be regarded as the standard. The values provided in inch-pound units are for information only.

    1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D123 Terminology Relating to Textiles

    D1776 Practice for Conditioning and Testing Textiles

    D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing

    D4439 Terminology for Geosynthetics

    D4491 Test Methods for Water Permeability of Geotextiles by Permittivity

    D5101 Test Method for Measuring the Filtration Compatibility of Soil-Geotextile Systems

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

    ICS Code

    ICS Number Code 59.080.70 (Geotextiles)

    UNSPSC Code

    UNSPSC Code 30121702(Geotextile)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D1987-18

    Citation Format

    ASTM D1987-18, Standard Test Method for Biological Clogging of Geotextile or Soil/Geotextile Filters, ASTM International, West Conshohocken, PA, 2018, www.astm.org

    Back to Top