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GB/T 22597-2014 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22597-2014: Reclaimed wastewater -- Determination of chemical oxygen demand -- Potassium dichromate method
Status: Valid

GB/T 22597: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22597-2014	139	Add to Cart	3 days	Reclaimed wastewater -- Determination of chemical oxygen demand -- Potassium dichromate method	Valid
GB/T 22597-2008	239	Add to Cart	2 days	Reclaimed wastewater -- Determination of chemical oxygen demand -- Potassium dichromate method	Obsolete

Similar standards

GB/T 16632 GB/T 22594 GB/T 22595 GB/T 22593 GB/T 22592

Basic data

Standard ID: GB/T 22597-2014 (GB/T22597-2014)
Description (Translated English): Reclaimed wastewater -- Determination of chemical oxygen demand -- Potassium dichromate method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G76
Classification of International Standard: 71.040.40
Word Count Estimation: 6,611
Date of Issue: 12/5/2014
Date of Implementation: 5/1/2015
Older Standard (superseded by this standard): GB/T 22597-2008
Quoted Standard: GB/T 603; GB/T 6682
Regulation (derived from): Announcement of Newly Approved National Standards 2014 No. 27
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 method for the determination of the regeneration of COD. This Standard applies to the determination of the regeneration of COD (COD), the measurement range of 5 mg/L ~ 100 mg/L (in O gauge).

GB/T 22597-2014: Reclaimed wastewater -- Determination of chemical oxygen demand -- Potassium dichromate method

---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.
Recalimed wastewater-Determination of chemical oxygen demand. Postassium dichromate method ICS 71.040.40 G76 National Standards of People's Republic of China Replacing GB/T 22597-2008 Determination of Chemical Oxygen Demand regeneration Potassium dichromate Issued on. 2014-12-05 2015-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 22597-2008 "regeneration COD Potassium dichromate method" and GB/T 22597- The main technical changes compared to 2008 are as follows. --- Modify the scope of 5mg/L ~ 100mg/L (see Chapter 1, Chapter 1 of the 2008 edition); --- The stoppered Erlenmeyer flasks modify (see 51, 2008 version 5.1.); --- Step on the water samples were modified (see 7.1, 7.5, 2008 edition). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee chemical water treatment chemicals Technical Committee (SAC/TC63/SC5) centralized. This standard is drafted by. Chinese Academy of Urumqi Petrochemical Company Limited Oil & Gas, Water Technology Nanjing Yu has Ltd., Henan clear Water Technology Co., Ltd., China Research Institute of Chemical Industry Co., Ltd. Beijing Yanshan Petrochemical Branch, CNOOC Tianjin Chemical Engineering Research and Design Institute. The main drafters of this standard. Guo Jingyu, Chen Wei, Wu enrichment, Li, Libo Wei, Lin, Du Hao. This standard replaces the standards previously issued as follows. --- GB/T 22597-2008. Determination of Chemical Oxygen Demand regeneration Potassium dichromate WARNING --- This standard acid used in corrosive, should be used to avoid inhalation or contact with the skin. Splashed on him immediately with large The amount of water rinse, severely should seek immediate medical attention.

1 Scope

This standard specifies the method for the determination of COD of regeneration. This standard applies to the determination of the regeneration of COD (COD), the measurement range of 5mg/L ~ 100mg/L (in O gauge).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982, NEQ) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)

3 Method summary

Adding a known amount of a standard solution of potassium dichromate in water samples in acid medium manganese sulfate, ceric sulfate as catalyst, heated to Full response, and then to 1,10-phenanthroline - ferrous indicator solution as indicator titration standard solution titration with ferrous ammonium sulfate in water samples unreduced Dichromate, the amount consumed by the ferrous ammonium sulfate into a mass concentration of oxygen consumed conversion.

4 Reagents and materials

4.1 standard reagent, unless otherwise specified, shall use analytical reagent and in line with GB/T 6682 stipulated three of water. 4.2 Test preparations and products required, in the absence of other specified requirements, prepared according to GB/T 603's. 4.3 sulfate (H2SO4). 4.4 mercury sulfate (HgSO4). 4.5 manganese sulfate (MnSO4 · H2O) solution. 50g/L. 4.6 ceric sulfate [Ce (SO4) 2 · 4H2O] solution. 50g/L. 4.7 potassium hydrogen phthalate standard solution. Weigh 0.4251g advance at 105 ℃ ~ 110 ℃ dried to a constant reference reagent phthalic Potassium bicarbonate, dissolved in water and diluted to 1000mL, and mix. And then diluted 10-fold to give the theoretical COD value of 50mg/L of standard solution. 4.8 Potassium dichromate standard solution. c (1/6K2Cr2O7) = 0.05000mol/L. Weigh 2.4516g ± 2 ℃ pre-dried at 120 ℃ The constant reference to the reagent potassium dichromate, dissolved in water and quantitatively transferred to a 1000mL volumetric flask, dilute to the mark, shake spare. 4.9 ferrous ammonium sulfate standard titration solution. c [(NH4) 2Fe (SO4) 2 · 6H2O] ≈0.020mol/L. a) preparation. dissolve 8g ferrous ammonium sulfate [(NH4) 2Fe (SO4) 2 · 6H2O] in water, adding 20mL sulfuric acid, until the solution was cooled It was diluted to 1000mL. Just before each use, accurately calibrated with standard potassium dichromate solution concentration of this solution. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22597-2014_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22597-2014_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 22597-2014_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22597-2014_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.

Question 5: Should I purchase the latest version GB/T 22597-2014?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22597-2014 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.