UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASTM International - ASTM E1798-96(2008)

Standard Test Method for Assessing Treatability or Biodegradability, or Both, of Organic Chemicals in Porous Pots (Withdrawn 2013)

inactive
Buy Now
Organization: ASTM International
Publication Date: 1 February 2008
Status: inactive
Page Count: 13
ICS Code (Other standards related to wastes): 13.030.99
significance And Use:

Secondary wastewater treatment using activated sludge is one of the most important biological treatment processes in use today. The porous pot simulates the activated sludge sewage treatment... View More

scope:

1.1 This test method covers simulating the activated sludge sewage treatment process and therefore gives a measure of the extent of biodegradation or removal likely to occur during sewage treatment.

1.2 Assessment of treatability or biodegradability, or both, of water soluble organic compounds in the porous pot test requires dissolved organic carbon (DOC) measurements or specific chemical analysis.

1.2.1 Dissolved organic carbon (DOC) measurements, relative to the controls, can be used to calculate the removal of the test chemical or water soluble residues by the porous pot treatment (see 12.3). The DOC measurements do not identify water soluble chemicals. Specific chemical analysis, on the other hand, can be used to identify and quantify the parent test chemical or (if standards are available) any water soluble residues formed by the porous pot treatment. A specific chemical analytical method must have a limit of detection (LOD) ≤0.1 mg/L in water or ≤0.1 mg/Kg in solids.

1.3 The feature that distinguishes this test from other activated sludge simulation tests is the retention of the activated sludge in a porous liner, that eliminates the need for a secondary clarifier and facilitates control of the critical parameter, the sludge retention time (SRT).

1.4 Porous pots can be completely sealed and tests using 14C-labeled test compounds are then possible. Carbon dioxide in the exhaust gas and bicarbonate in the effluent can be used together to assess the extent of mineralization, and levels of radiolabel in the sludge and in the aqueous phase may also be determined.

1.5 By simultaneously measuring the efficiency of the pots in removing DOC, it is also possible to determine whether the test compound has any adverse effect on normal sewage treatment processes.

1.6 The SI units given in parentheses 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 6.

Document History

ASTM E1798-96(2008)
February 1, 2008
Standard Test Method for Assessing Treatability or Biodegradability, or Both, of Organic Chemicals in Porous Pots (Withdrawn 2013)
1.1 This test method covers simulating the activated sludge sewage treatment process and therefore gives a measure of the extent of biodegradation or removal likely to occur during sewage treatment....
March 10, 1996
Standard Test Method for Assessing Treatability or Biodegradability, or Both, of Organic Chemicals in Porous Pots
1.1 This test method covers simulating the activated sludge sewage treatment process and therefore gives a measure of the extent of biodegradation or removal likely to occur during sewage treatment....
March 10, 1996
Standard Test Method for Assessing Treatability or Biodegradability, or Both, of Organic Chemicals in Porous Pots
1.1 This test method covers simulating the activated sludge sewage treatment process and therefore gives a measure of the extent of biodegradation or removal likely to occur during sewage treatment....
Advertisement