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GB/T 42367-2023 English PDF

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US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42367-2023: Chemicals - Protozoan activated sludge inhibition test
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42367-2023	359	Add to Cart	4 days	Chemicals - Protozoan activated sludge inhibition test	Valid

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Basic data

Standard ID: GB/T 42367-2023 (GB/T42367-2023)
Description (Translated English): Chemicals - Protozoan activated sludge inhibition test
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A80
Classification of International Standard: 13.300, 13.020
Word Count Estimation: 18,158
Date of Issue: 2023-03-17
Date of Implementation: 2023-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42367-2023: Chemicals - Protozoan activated sludge inhibition test

---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.
ICS13:300;13:020:40 CCSA80 National Standards of People's Republic of China Chemical Protozoa Activated Sludge Inhibition Test Released on 2023-03-17 2023-10-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Test Principle 2 5 Test substance information 2 6 Reference 2 7 Test preparation 2 8 Test procedure 4 9 Quality Assurance and Quality Control 5 10 Data processing 5 11 report 7 Appendix A (informative) Test water 8 Appendix B (informative) Substrate 10 Appendix C (Informative) Digitonin Solution 11 Appendix D (informative) concentration-effect curve 12 Reference 13

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Standardization Technical Committee on Hazardous Chemicals Management (SAC/TC251): This document was drafted by: Institute of Microbiology, Guangdong Academy of Sciences (Guangdong Microbial Analysis and Testing Center), Ministry of Ecology and Environment, Solid Waste With Chemical Management Technology Center, China Academy of Inspection and Quarantine, Xinanrun (Beijing) Consulting Co:, Ltd:, Xiamen Green Biotechnology Co:, Ltd:, Guangdong Environmental Protection Engineering Vocational College, Guangdong Quanqing Testing Co:, Ltd:, Xi'an Kaijinzhe Testing Co:, Ltd:, Jinjiu Technology Co:, Ltd: Ltd: The main drafters of this document: Mei Chengfang, Deng Guirong, Yang Shan, Dou Congcong, Luo Fengjuan, Chen Yanling, Huang Youda, Liu Chunxin, Zeng Guoqu, Liu Yanzhen, Long Weinian, Zhou Lili, Xu Zhirui, Peng Yijun, Wu Caichun, Mao Xiaoyao:

Introduction

The principle of biological treatment in a domestic sewage treatment plant (STP) is to convert the organic matter contained in the influent sewage into microbial biomass: The amount of matter, and then the microorganisms are separated from the liquid to obtain purified sewage, with the purpose of minimizing the organic load in the sewage and reducing the The content of nutrients such as ammonia nitrogen, nitrate and phosphate, while minimizing the amount of biological sludge: biophagocytosis of activated sludge A process played a role in promoting: In conventional wastewater treatment plants, the above-mentioned phagocytosis is usually dominated by ciliates, which feed on bacteria, Purify the sewage, further improve the transparency of the sewage, and reduce the organic load in the effluent: The purpose of this method is to evaluate the impact of chemical substances on consumers in sewage treatment plants, which mainly consist of ciliated protozoa: composition: This test is based on an international comparative study, and the relevant test methods have been validated in 5 laboratories: The above research used Five single-component organic compounds assumed to have non-polar or polar narcotic mode of action (MOA) were used as test substances, namely: 1-octylamine (CAS: 111-86-4), 3,5-Dichlorophenol (CAS: 591-35-5), Dimethyl Sulfoxide (CAS: 67-68-5), Diphenyl Ether (CAS: 101- 84-8) and hexachlorophene (CAS: 70-30-4), the partition coefficients of these substances ranged from -1:36 to 6:91: If this method is used to test the mixture and the data obtained are used for regulation, it is necessary to consider whether the test results are sufficient and valid: If there are regulations that clearly stipulate that the mixture can be tested, this document can be directly used: Chemical Protozoa Activated Sludge Inhibition Test

1 Scope

This document describes the test principle, test substance information, reference substance, test preparation, test Procedures, Quality Assurance and Quality Control, Data Processing, Reporting: This document applies to protozoan activated sludge inhibition tests for chemicals:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 21801 Rapid Biodegradability Respirometric Test of Chemicals GB/T 21802 MITI Test for Improved Rapid Biodegradability of Chemicals (I) GB/T 21803 Rapid biodegradability of chemicals DOC reduction test GB/T 21831 Rapid Biodegradability Test of Chemicals by Closed Bottle Method GB/T 21845 Water Solubility Test of Chemicals GB/T 21852 Chemical partition coefficient (n-octanol-water) high performance liquid chromatography test GB/T 21853 Partition coefficient of chemicals (n-octanol-water) shake flask test GB/T 21856 Carbon dioxide generation test for rapid biodegradability of chemicals GB/T 21857 OECD Screening Test for Improved Rapid Biodegradability of Chemicals GB/T 22228 Static method for the determination of the vapor pressure of solid and liquid industrial chemicals in the range of 10-1Pa to 105Pa GB/T 22229 Determination of vapor pressure level of solid and liquid vapor pressure of industrial chemicals in the range of 10-3Pa to 1Pa Equity GB/T 27850 General rules for ready biodegradability of chemicals EN15934 Sludge, treated biological waste, soil and waste Calculation of dry matter by determination of dry matter content or moisture

3 Terms and Definitions

The following terms and definitions apply to this document: 3:1 In a given test period, compared with the control group, the concentration of the test substance that causes the phagocytic activity of the activated sludge to decrease by x%: 3:2 During a given test period, the highest subject with no statistically significant effect (p ≥ 0:05) on the test group compared with the control group Test substance concentration: ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42367-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42367-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42367-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42367-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.