Valid

GB 5085.5-2007Identification standards for hazardous wastes Identification for reactivity (English PDF)

Preview PDF

Also coversGB5085.5-2007

This is a limited preview

Buy now to download the full PDF

Need quotation for your management?

Get a formal quotation for GB 5085.5-2007 in 30 minutes.

Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Mandatory

Issue date

April 25, 2007

Implementation date

October 1, 2007

Scope

GB 5085.5-2007 (Identification standards for hazardous wastes Identification for reactivity) is available as an English-translated PDF.

GB 5085.5-2007 — This standard specifies the criteria for the identification of reactive hazardous wastes. This standard applies to the reactive identification of solid waste produced in any production, life and other activities.

Found what you need?

Document preview — GB 5085.5-2007

National Standard of the People's Republic of China

ICS: 13.030.50
Classification: Z 70

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Foreword
1 General rules for the identification of hazardous wastes
2 Corrosion identification of hazardous waste identification standards
3 Identification criteria for hazardous wastes Acute toxicity screening
4 Identification of leaching toxicity of hazardous waste identification standards
5 Identification of flammability of hazardous waste identification standards
6 Identification of hazardous wastes for reactive identification
7 Identification of hazardous wastes
1 Scope
2 Normative references
3 Terms and Definitions
4 Identification criteria
4.1 has explosive properties
4.2 Contact with water or acid produces flammable or toxic gases
4.3 Abandoned oxidants or organic peroxides
5 experimental methods
5.1 sampling points and sampling methods in accordance with HJ/T298 regulations.
5.4 Section 4.2.2 is mainly judged based on professional knowledge and experience.
5.5 Article 4.2.3 is carried out in accordance with appendix 1 of this section.
5.6 Article 4.3.1 shall be conducted in accordance with the provisions of GB 19452.
5.7 Article 4.3.2 shall be conducted in accordance with the provisions of GB 19521.12.
6 Standard implementation
1 Scope
2 principle
3 Reagents and materials
3.1 Reagent water, organic-free deionized water.
3.4 NaOH solution (1.25 mol/L), dissolve 50g NaOH in reagent water and dilute to 1L.
4 Instruments and devices
4.1 Round-bottomed flask, 500 ml, three necks with 24/40 ground glass adapter.
4.2 Scrubbing bottles, 50ml scale wash bottles.
4.5 Hose for connecting nitrogen source and equipment.
4.6 Nitrogen. Store in a gas cylinder with pressure relief valve.
4.7 Flow Meter. Used to monitor nitrogen flow.
4.8 Analytical balance. Weigh to 0.001g.
5 Sample collection, preservation and pretreatment
6 Analysis steps
6.3 Add 10 g of test waste to the round bottom flask.
7 result calculation

Foreword

To implement the "Environmental Protection Law of the People's Republic of

Prevent and control environmental pollution caused by hazardous wastes, strengthen the management of hazardous wastes, protect the environment, and protect human health.

This standard.

This standard is part of the national hazardous waste identification standard. The National Hazardous Waste Identification Standard specifies solid waste

Hazardous characteristics Technical indicators, hazardous properties Solid wastes that meet the technical specifications specified in the standards are hazardous wastes and must be in accordance with the law.

Manage as hazardous waste. The national hazardous waste identification standard consists of the following seven criteria.

1 General rules for the identification of hazardous wastes

2 Corrosion identification of hazardous waste identification standards

3 Identification criteria for hazardous wastes Acute toxicity screening

4 Identification of leaching toxicity of hazardous waste identification standards

5 Identification of flammability of hazardous waste identification standards

6 Identification of hazardous wastes for reactive identification

7 Identification of hazardous wastes

This standard is a new part.

According to relevant laws and regulations, this standard has the effect of enforcement.

This standard was proposed by the Science and Technology Standards Division of the State Environmental Protection Administration.

This standard was drafted by. Institute of Environmental Standards, Chinese Research Academy of Environmental Sciences, Research on Solid Waste Pollution Control Technology

The.

This standard was approved by the State Environmental Protection Administration on March 27,.2007.

This standard has been implemented since October 1,.2007.

This standard is interpreted by the State Environmental Protection Administration.

Hazardous Waste Identification Standard Reactive Identification

1 Scope

This standard specifies the criteria for the identification of reactive hazardous wastes.

This standard applies to the reactive identification of solid waste produced in any production, life and other activities.

2 Normative references

The clauses in the following documents have been adopted as references in this part of GB 5085 as the terms of this part. Any date

The latest version of the cited document applies to this standard.

GB 19452 Safety Code for Inspection of Hazardous Properties of Hazardous Oxidation Goods

GB 19455 Safety Code for Inspection of Hazardous Characteristics of Dangerous Goods for Civil Explosives

GB 19521.4-2004 Safety Code for Inspection of Hazardous Characteristics of Hazardous Combustion Products Released with Water

GB 19521.12 Safety regulations for the inspection of dangerous properties of organic peroxide dangerous goods

HJ/T 298 Technical Specifications for Identification of Hazardous Wastes

3 Terms and Definitions

3.1

Explosion explosion

In a very short period of time, a large amount of energy is released, a high temperature is generated, and a large amount of gas is released, forming a high pressure in the surroundings.

Chemical reactions or changes in state.

3.2

Detonation

The shock wave is characterized by explosions propagated at supersonic speeds. Shock wave propagation speeds can often reach thousands to several kilometers per

Second, and external conditions have less impact on the detonation speed.

4 Identification criteria

Solid waste that meets any of the following conditions is a reactive hazardous waste.

4.1 has explosive properties

GB 5085.5-200×

4.1.1 Unstable under normal temperature and pressure, and it is prone to drastic changes under no detonation conditions.

4.1.2 Standard temperature and pressure (25 °C, 101.3kPa), prone to detonation or explosive decomposition reaction.

4.1.3 A detonation or explosion reaction can occur if it is subjected to a strong primer or heated under closed conditions.

4.2 Contact with water or acid produces flammable or toxic gases

4.2.1 Mixing with water causes violent chemical reactions and emits large amounts of flammable gases and heat.

4.2.2 Mixing with water can produce toxic gases, vapours or fumes that are harmful to human health or the environment.

4.2.3 Decomposition of kilograms of cyanide-containing waste under acidic conditions produces >=250mg of hydrogen cyanide gas, or per kilogram

Sulfide-containing wastes decompose to produce >=500mg of hydrogen sulfide gas.

4.3 Abandoned oxidants or organic peroxides

4.3.1 Waste oxidizers that can easily cause combustion or explosion.

4.3.2 Waste organic peroxides containing peroxy radicals that are extremely sensitive to heat, vibration or friction.

5 experimental methods

5.1 sampling points and sampling methods in accordance with HJ/T298 regulations.

Tests and determinations are made with the provisions of 6.4.

5.3 Article 4.2.1 shall be tested and determined in accordance with the provisions of Articles 5.5.1 and 5.5.2 of GB 19521.4-2004.

5.4 Section 4.2.2 is mainly judged based on professional knowledge and experience.

5.5 Article 4.2.3 is carried out in accordance with appendix 1 of this section.

5.6 Article 4.3.1 shall be conducted in accordance with the provisions of GB 19452.

5.7 Article 4.3.2 shall be conducted in accordance with the provisions of GB 19521.12.

6 Standard implementation

This standard shall be supervised and implemented by the competent department of environmental protection administration of the people's government at or above the county level.

appendix

Solid waste water reactivity determination

Solid Waste – Determination of the Reactivity with Water

1 Scope

This method specifies the method for determining the specific release rate of hydrocyanic acid and hydrogen sulfide after contact with an acid solution.

This method is suitable for all waste that does not form an explosive mixture after encountering acid.

This method only detects the hydrogen cyanide and hydrogen sulfide produced under experimental conditions.

2 principle

A certain amount of acid was added to the closed system containing the quantitative waste, and the generated gas was blown into a gas cylinder to measure the analyte.

3 Reagents and materials

3.1 Reagent water, organic-free deionized water.

3.2 Sulfuric acid (0.005mol/L), add 2.8ml concentrated H2SO4 in reagent water and dilute to 1L. Take 100ml of this solution and dilute it to 1L.

Get 0.005mol/L H2SO4.

3.3 cyanide reference solution (1000mg/L), dissolve about 2.5g KOH and 2.51g KCN in 1L reagent water, use 0.0192mol/L

AgNO3 calibration, the concentration of cyanide in this solution should be 1mg/ml.

3.4 NaOH solution (1.25 mol/L), dissolve 50g NaOH in reagent water and dilute to 1L.

3.5 NaOH solution (0.25 mol/L) was diluted with reagent water to.200 ml of 1.25 mol/L NaOH solution (3.4) to 1L.

3.6 Silver nitrate solution (0.0192 mol/L), pulverize about 5g of AgNO3 crystals, and dry to constant weight at 40°C. Weigh 3.265g of dried AgNO3,

Dissolve with reagent water and dilute to 1L.

3.7 Sulfide reference solution (1000mg/L), dissolve 4.02g of Na2S·9H2O in 1L of reagent water, the H2S concentration in this solution is 570mg/L,

Dilute this solution according to the required analytical range (100-570 mg/L).

4 Instruments and devices

4.1 Round-bottomed flask, 500 ml, three necks with 24/40 ground glass adapter.

4.2 Scrubbing bottles, 50ml scale wash bottles.

4.3 Stirring device, the speed can reach about 30r/min, the magnetic rotor can be used in combination with the stirring rod, or it can be driven by the overhead motor

Spiral stirrer.

GB 5085.5-200×

4.4 Isobaric separator funnel with pressure equalization tube, 24/40 ground-mouth glass joint and PTFE sleeve.

4.5 Hose for connecting nitrogen source and equipment.

4.6 Nitrogen. Store in a gas cylinder with pressure relief valve.

4.7 Flow Meter. Used to monitor nitrogen flow.

4.8 Analytical balance. Weigh to 0.001g.

The experimental device diagram is shown in Figure 1.

Flow meter

N2 entrance

0.05M H2SO4

Reaction bottle

Waste samples

Wash bottle

Blender

Figure 1 Experimental setup for the determination of cyanide or sulfide release in waste

5 Sample collection, preservation and pretreatment

When collecting samples of waste containing or suspected of containing sulfides or mixtures of sulfides and cyanides, avoid exposing the sample to air

gas. The vial should be completely filled with no space at the top and the cap tightly capped. Samples should be kept cold in the dark and analyzed as soon as possible.

For cyanide-containing waste samples, it is recommended that they be analyzed as soon as possible. Although you can use a strong base to adjust the sample to pH 12 for storage, this is

This will dilute the sample, increase ionic strength, and may change other physicochemical properties of the waste, affecting the rate of release of hydrocyanic acid. The sample should

Store in a dark place.

For sulphide-containing waste samples, it is recommended that analysis be carried out as soon as possible. Although the sample can be adjusted to pH 12 with a strong base and added to the sample

Zinc acetate is preserved, but this will dilute the sample, increase the ionic strength, and may change other physicochemical properties of the waste, affecting the vulcanization

Hydrogen release rate. Samples should be kept in the dark in a cool place.

Experiments should be conducted in a fume hood.

6 Analysis steps

6.1 Add 50ml of 0.25 mol/L NaOH solution to the scale scrubber and dilute to the liquid level with reagent water.

6.2 closed measurement system, using a rotameter to adjust the nitrogen flow rate should be 60ml/min.

6.3 Add 10 g of test waste to the round bottom flask.

6.4 Keep the nitrogen flow, add enough sulfuric acid to make the flask half full, and start the 30min experiment process.

6.5 Begin stirring while the acid enters the round bottom flask. The stirring speed should remain constant throughout the experiment.

Note. It is advisable that the stirring speed is such that no vortex is generated.

6.6 After 30 minutes, turn off the nitrogen and remove the scrubber to determine the contents of cyanide and sulfide in the scrubber.

7 result calculation

The content of cyanide or sulfide in solid waste samples is calculated by the following formula.

R = specific release rate (mg/kg·s) =

Total effective HCN/H2S (mg/kg) = R×S

In the formula.

X--HCN concentration in the scrubber (mg/L), H2S concentration in the scrubber (mg/L);

L--the volume of the solution in the gas cylinder (L);

W--weight of waste taken (kg);

S - measurement time (s) = time to switch off nitrogen - the time for nitrogen gas to pass.

END: Draft Version (GB 5085.5-2007)

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

Referenced standards

Normative references

GB 19455Safety code for inspection of hazardous properties for dangerous of civil explosives

GB 5085 · GB 19452 · GB 19521.4-2004 · GB 19521.12

Cited by

How to Download GB 5085.5-2007

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.