Registration Dossier

Environmental fate & pathways

Mode of degradation in actual use

Currently viewing:

Administrative data

Endpoint:
mode of degradation in actual use
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
1983
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The study was not conducted according to guideline/s and GLP but the report contains sufficient data to permit interpretation of study results
Cross-referenceopen allclose all
Reason / purpose:
reference to same study
Reason / purpose:
reference to other study

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Predicting treatability of multiple organic priority pollutant wastewaters from single-pollutant treatability studies
Author:
Kincannon, D.F. et al.
Year:
1983
Bibliographic source:
Proc. 37th Waste Conf., Ann. Arbor Sci. Publ., 641 - 650
Reference Type:
publication
Title:
Biological treatability of specific organic compounds found in chemical industry wastewaters.
Author:
Stover, E.L., Kincannon, D.F.
Year:
1983
Bibliographic source:
J. Water Pollut. Control Fed. 55, 97 - 109

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Activated sludge simulation test
GLP compliance:
no
Type of study / information:
Referenced and published

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Name of test material (as cited in study report): 1,2-Dichloropropane

Results and discussion

Any other information on results incl. tables

Complete-mix, bench-scale, continuous-flow activated-sludge reactors were used to treata synthetic wastewater containing a "base mix" plus the priority pollutant(s) under study. The "base mix" included:ethylene glycol, ethyl alcohol, glucose, glutamic acid,acetic acid,phenol, ammonium sulfate, phosphoric acid, and salts.The "base-mix" and priority pollutants were added so that the BOD5of the wastewaterwould be approximately 250 mg/L. The priority pollutants were studied as single-pollutantsystems and in combinations of three to a system.

Operation of the reactors with synthetic wastewater amended with 1,2 -dichloropropane showed that influent concentrations of 182 mg/L were reduced to 1.8 mg/L in the effluent, corresponding to 99% removal efficiency. The mechanism responsible for the loss of 1,2 -dichloropropane from the systems was volatilization.

Applicant's summary and conclusion

Conclusions:
This study examined the feasibility of predicting biological treatment of combinations of priority pollutants by using information obtained for the treatabilty studies for single component systems. Continuous flow activated sludge reactors were operated on a synthetic wastewater supplemented with various test materials. Concentrations of the test materials was monitored in the influent and effluent from the reactors. Stripping was determined by measuring the concentration of test materials in the offgases of the reactors.
Executive summary:

Complete-mix, bench-scale, continuous-flow activated-sludge reactors were used to treat a synthetic wastewater containing a "base mix" plus the priority pollutant(s) under study. The "base mix" included: ethylene glycol, ethyl alcohol, glucose, glutamic acid, acetic acid, phenol, ammonium sulfate, phosphoric acid, and salts. The "base-mix" and priority pollutants were added so that the BOD5of the wastewater would be approximately 250 mg/L. The priority pollutants were studied as single-pollutant systems and in combinations of three to a system.

Operation of the reactors with synthetic wastewater amended with 1,2 -dichloropropane showed that influent concentrations of 182 mg/L were reduced to 1.8 mg/L in the effluent, corresponding to 99% removal efficiency. The mechanism responsible for the loss of 1,2 -dichloropropane from the systems was volatilization.