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GB/T 21795-2008: Testing of chemicals -- Simulation test Aerobic sewage treatment -- Biofilms
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21795-2008 | English | 274 |
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Testing of chemicals -- Simulation test Aerobic sewage treatment -- Biofilms
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GB/T 21795-2008
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Basic data | Standard ID | GB/T 21795-2008 (GB/T21795-2008) | | Description (Translated English) | Testing of chemicals -- Simulation test Aerobic sewage treatment -- Biofilms | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300; 13.020.40 | | Word Count Estimation | 14,144 | | Date of Issue | 2008-05-12 | | Date of Implementation | 2008-09-01 | | Adopted Standard | OECD No.303B-2001, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 7, 2008 (No. 120 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the chemical simulation test Aerobic sewage treatment methods outlined biofilm, test preparation, test procedures, quality assurance and quality control, data and reports. This standard applies to inherently biodegradable, but not fast biodegradable chemicals, also applies to the need for more information on the material, especially high- tonnage chemicals. Substances insoluble in water and volatile materials require special pretreatment in order to be tested. | GB/T 21795-2008: Testing of chemicals -- Simulation test Aerobic sewage treatment -- Biofilms---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Testing of chemicals Simulation test Aerobic sewage treatment -. Biofilms
ICS 13.300; 13.020.40
A80
National Standards of People's Republic of China
CHEMICALS Simulation Test
Aerobic sewage treatment biofilm
Posted 2008-05-12
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is identical with the Organisation for Economic Co-operation and Development (OECD) guidelines for testing of chemicals No. 303B (2001 Nian) "pollution simulation test
Water aerobic treatment. biofilm "(in English).
This standard made the following editorial changes.
--- Increasing the terms and definitions section.
Appendix A of this standard and Appendix B is an informative annex.
This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points.
This standard is drafted by. Environmental Protection Department of Chemical Registration Center.
Participated in the drafting of this Standard. China Environmental Science Research Institute, Chinese Academy of Inspection and Quarantine.
The main drafters of this standard. high reflect the new, new Liu Chun, Lu Ling, Li Handong, Li Ji, Falls Apart.
CHEMICALS Simulation Test
Aerobic sewage treatment biofilm
1 Scope
This standard specifies the chemical simulation test Aerobic sewage treatment biofilm methods outlined, test preparation, test procedures, quality assurance
And quality control, data and reports.
This standard applies to inherently biodegradable, but does not have the biodegradability of chemicals, but also for more information
Substances, especially high-tonnage chemicals.
Hardly water-soluble substance and the volatile substances after pretreatment require a special form to be tested.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1
Test substance exhibiting a limited time in contact with the inoculum biodegradability.
2.2
Under optimum conditions, the test substance for a long time in contact with the exhibit inoculum potential for biodegradation.
2.3
Solution, organic carbon content, usually through the 0.45μm membrane filter liquid organic carbon content, or by 4000r/min transfer
Centrifugation content of organic carbon in the supernatant after 15min.
2.4
The total amount of test medium (including solutions and suspensions) organic carbon.
3 test substance information
a) structural formula;
b) purity;
c) volatility;
d) solubility in water;
e) adsorption;
f) microbial toxicity.
4 Summary of Method
4.1 Principle
The synthetic or domestic sewage as well as the test substance, the mixing or separately added to the rotating tube reactor, biofilm inclined Construction
On the inner wall of the tube. Select the reactor operating conditions, so as to fully remove organic matter. Analysis of the water of dissolved organic carbon (DOC) of
Analysis of content or concentration of the test substance with a specific method. For comparison, a control group without the test substance is also operating under the same conditions. Test
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