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Environmental fate & pathways

Monitoring data

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Administrative data

Endpoint:
monitoring data
Type of information:
experimental study
Adequacy of study:
disregarded due to major methodological deficiencies
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study well documented, meets generally accepted scientific principles.

Data source

Reference
Reference Type:
publication
Title:
Identification of organic compounds in unbleached treated kraft paper mill wastewaters.
Author:
KEITH LH
Year:
1976
Bibliographic source:
Environ. Sci. Technol., 10 (6),555-564.

Materials and methods

Principles of method if other than guideline:
GC-MS analysis of paper mill wastewater before and after treatment
GLP compliance:
not specified
Type of measurement:
concentration at contaminated site
Media:
other: kraft paper mill wastewaters

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
no data

Study design

Details on sampling:
- Geographic coordinates: Georgia, US
- Known emission sources near sampling site: paper mills
- Period of sampling: 1974 (three-day composite samples)
- Sampling:
Two different effluent paper mills were sampled. Paper mills were characterised by similar process but different waste treatment.
* Paper Mill "A"; 49 000 metre-square of water passed through the treatment system daily. The wastewater treatment system was: Raw influent /
primary clarifier (5 hours) / trickling biofilter and secondary clarifier (3h) / aerated lagoon (2 days) = Treated effluent.
* Paper Mill "B"; 21 000 metre-square of water passed through the treatment system daily. The wastewater treatment system was: Raw influent /
lime floculation (40 min) / clarifier (6-8 h) / quiescent storage basin (3-6 months) = Treated effluent.

Three-day composite samples, composed of equal volumes, were collected both for raw and treated effluents for both paper mills.

- Sample storage before analysis:
Effluent samples were placed in polyethylene plastic containers, immediately frozen and stored at -10 deg.C until analysis

Results and discussion

Any other information on results incl. tables

The analytical data obtained for 3-day composite samples were in mg/l:

                                             Paper mill "A"     Paper  mill "B"
Raw effluent                              0.844                   1.268
Treated effluent                         0.291                   0.092
Treatment efficiency (%)             65                         93

Applicant's summary and conclusion