Registration Dossier

Administrative data

Endpoint:
distribution modelling
Type of information:
(Q)SAR
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
STP modeling was conducted by means of an internationally accepted QSAR, i.e., QSAR STPWIN™ of EPI Suite™ v.4.11. STPWIN™ uses several outputs from EPI Suite™, this program predicts the removal of a chemical in a typical activated sludge-based sewage treatment plant. Values are given for total removal and three processes that may contribute to removal: biodegradation, sorption to sludge, and air stripping. The program assumes a standard system design and set of default operating conditions.
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other: QSAR
Title:
Removal in Waste Water Treatment by STPWIN™ of EPI Suite™ v.4.11, USA.
Author:
GNS Consult AG
Year:
2013
Bibliographic source:
http://www.epa.gov/oppt/exposurepubs/episuite.htm

Materials and methods

Model:
other:
Calculation programme:
STPWIN™ of EPI Suite™ v.4.11, USA.

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Percent distribution in media

Other distribution results:
The results show that 93-25% of the substance was removed during wastewater treatment by adsorption to sludge, using the default value of 10000 hr for Bio P,A,S.

Applicant's summary and conclusion

Conclusions:
The results show that 93.25% of the substance was removed during wastewater treatment by adsorption to sludge, using the default value of 10000 hr for Bio P,A,S.
Executive summary:

The removal of the substance during sewage treatment was estimated using the STPWIN™ module of EPI Suite™ v.4.11. STPWIN™ uses several outputs from EPI Suite™, this program predicts the removal of a chemical in a typical activated sludge-based sewage treatment plant. Values are given for total removal and three processes that may contribute to removal: biodegradation, sorption to sludge, and air stripping. The program assumes a standard system design and set of default operating conditions. For the present calculations, these default operating conditions were used. The results show that 93.25% of the substance was removed during wastewater treatment by adsorption to sludge.