Registration Dossier

Administrative data

Endpoint:
monitoring data
Type of information:
other: monitoring data from WWTP
Adequacy of study:
supporting study
Study period:
Monitoring data from one year time period 1/2009-12/2009
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Remarks:
The manufacturer of the substance has their own low-rate activated sludge treatment plant to treat the waste waters resulting from the manufacturing process. The treatment plant is continuously monitored, and the operation of the WWTP is covered by an environmental permit. In addition, analyses are carried out in generally accepted and accreditated laboratories.
Cross-reference
Reason / purpose:
reference to other study

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2009
Report Date:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
other: BOD 7: SFS-EN 1899-1:1998
Deviations:
not specified
Remarks:
accreditated method
Qualifier:
according to
Guideline:
other: CODCr: ISO 15705:2002
Deviations:
not specified
Remarks:
accreditated method
Qualifier:
according to
Guideline:
other: N tot: SFS 5505:1988
Deviations:
not specified
Remarks:
accreditated method
Qualifier:
according to
Guideline:
other: N-NH4: Internal method sis. A20: method 45000; Accreditated method
Deviations:
not specified
Remarks:
accreditated method
Principles of method if other than guideline:
The concentration of the test substance in the influents is determined at the manufacturer's laboratory. The substance concentrations in influent samples are determined by using HPLC joined with Na-ionchange column (analysis conditions: Temperature 75 C; eluent: 0.0001M Na2SO4) using the official method of ICUMSA; Method GS4-22 (2002) "The Determination of Sucrose and Betaine by HPLC in Beet Molasses".
GLP compliance:
no
Type of measurement:
other: concentration of the substance in influents, and concentrations of selected monitoring parameters (CODCr, BOD7, Ntot, N-NH4) in influents and effluents of low-rate activated sludge treatment plant.
Media:
other: WW influents and effluents of manufacturer's own low-rate activated sludge treatment plant

Test material

Reference
Name:
Unnamed
Type:
Constituent

Study design

Details on sampling:
The manufacturer has their own low-rate activated sludge treatment plant. Monitoring of the WWTP is authorised by an environmental permit. The authorised monitoring program includes a sampling plan of influents and effluents. Loading rate of monitoring parameters is based on the composite sample taken once a month. The monitoring parameters are analysed in an accreditated testing laboratory. Sampling is carried out using an automatic sampler which is collecting a composite sample of influent and effluent during a one-day period. In addition, the manufacturer is monitoring process losses from samples taken on working days, and from composite samples taken on weekends. This sampling is carried out using an automatic scheduled composite sampler.

Results and discussion

Concentrationopen allclose all
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
substance
Remarks:
Concentration of the substance in influent lead to low-rate activated sludge treatment plant
Conc.:
<= 0.079 g/L
Remarks on result:
other: Annual average concentration of the substance in influent
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: CODCr loading rate
Conc.:
<= 648 other: kg/d
Remarks on result:
other: Annual average influent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: CODCr loading rate
Conc.:
<= 70 other: kg/d
Remarks on result:
other: Annual average effluent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: BOD7 loading rate
Conc.:
<= 552 other: kg/d
Remarks on result:
other: Annual average influent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: BOD7 loading rate
Conc.:
<= 3.2 other: kg/d
Remarks on result:
other: Annual average effluent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: total nitrogen loading rate
Conc.:
<= 85 other: kg/d
Remarks on result:
other: Annual average influent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: total nitrogen loading rate
Conc.:
<= 6.8 other: kg/d
Remarks on result:
other: Annual average effluent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: Ammonium loading rate
Conc.:
<= 36 other: kg/d
Remarks on result:
other: Annual average influent loading rate
Country:
Finland
Location:
Manufacturer's own low-rate activated sludge treatment plant at Naantali plant
Substance or metabolite:
other: Ammonium loading rate
Conc.:
<= 2.7 other: kg/d
Remarks on result:
other: Annual average effluent loading rate
Details on results:
Average flow rates per quarter year are used to determine the loading rates of selected monitoring parameters. Flow rates of influents and effluents are calculated based on flow rate measurements carried out at the same time as sampling. In this study report, the removal efficiency is calculated from loading rates and reported only for selected key parameters.

Removal efficiencies for the selected key parameters are:

CODCr 89 %
BOD7 99 %
Total-N 93 %
N-NH4 95 %

Applicant's summary and conclusion

Conclusions:
Waste waters resulting from the manufacturing process of the substance are treated in a low-rate activated sludge treatment plant at the manufacturing site. The treatment plant is continuously monitored, and the operation of the WWTP is covered by an environmental permit. Based on the annual monitoring results, the substance, at average influent concentrations of 0.079 g/l, is not inhibitory to activated sludge microorganisms. Despite the high concentrations of the substance in influents, the waste water treatment plant is functioning well. In addition, nitrogen present in the substance can be efficiently removed during the treatment process. The removal efficiencies are 93% for total nitrogen and 95% for ammonium, respectively. After treatment the effluents can be discharged into the sea.
Executive summary:

Waste waters resulting from the manufacturing process of the substance are treated in a low-rate activated sludge treatment plant at the manufacturing site. The treatment plant is continuously monitored, and the operation of the WWTP is covered by an environmental permit. Based on the annual monitoring results, the substance, at average influent concentrations of 0.079 g/l, is not inhibitory to activated sludge microorganisms. Despite the high concentrations of the substance in influents, the waste water treatment plant is functioning well. In addition, nitrogen present in the substance can be efficiently removed during the treatment process. The removal efficiencies are 93% for total nitrogen and 95% for ammonium, respectively. After treatment the effluents can be discharged into the sea.