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GB/T 36385-2018Treatment and disposal method for developing waste liquid of photosensitive material (English PDF)

感光材料冲洗行业废液处理处置方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 7, 2018

Implementation date

January 1, 2019

Scope

GB/T 36385-2018 is the English-translated version of 感光材料冲洗行业废液处理处置方法.

GB/T 36385-2018 deals with the developing waste liquid of photosensitive materials, meaning the waste water and liquids produced during development, bleaching and fixing.

It defines this waste liquid, describes its types and sets out treatment and disposal methods and environmental protection requirements.

The types described include waste developer, whose main components are methylaminophenol and hydroquinone in black-and-white developer and p-phenylenediamine derivatives in colour developer, waste fixer, which carries silver mainly as a thiosulfate complex, and waste bleach.

Its normative references include the integrated wastewater and air pollutant emission standards GB 8978 and GB 16297 and the GB/T 11067 methods for determining silver.

It applies to the treatment and disposal of the waste liquids produced in the photographic material processing industry. It was issued on 7 June 2018 and has applied since 1 January 2019.

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Document preview — GB/T 36385-2018

National Standard of the People's Republic of China

ICS: 13.030.20
Classification: Z 05

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Photographic materials washing industry waste liquid types

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the terms and definitions, composition types, treatment methods and environmental protection of waste liquid in the photographic material processing industry.

This standard is applicable to the treatment and disposal of waste liquid of photosensitive materials produced in the processes of development, bleaching and fixing.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB 8978 Integrated Wastewater Discharge Standard

GB/T 11067.1-2006 Methods for the determination of silver - Determination of silver content - Silver chloride precipitation - Flame atomic absorption spectrometry

GB/T 11067.5-2006.

GB/T 11067.6-2006.

GB 16297 Integrated emission standards for atmospheric pollutants

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Photosensitive material washing waste liquid

Waste water and waste liquid generated by the photographic material during development, bleaching, fixing, etc.

4 Photographic materials washing industry waste liquid types

4.1 Waste developer

Waste developer includes waste developer, protectant, accelerator, fog inhibitor, and other special additives. The main component is waste Discarded developer, wherein the main component of the black and white developer is methylamine phenol and hydroquinone; the main component of the color developing agent is p-phenylenediamine derivative. Chemical oxygen demand (CODCr) concentration. 6 x 10^3 mg/L ~ 6 x 10^4 mg/L.

4.2 Waste Fixer

After the photosensitive material is exposed and developed, the waste liquid generated in the process of removing the unexposed undeveloped silver halide from the emulsion by the fixing solution. Waste The main component of the fixing solution is a discarded fixer, as well as a waste of a protective agent, a neutralizing agent, and a hardener. Silver (Ag) concentration. 1000mg/L~ 12000mg/L (mainly in the form of silver thiosulfate complex, followed by ferrous iron diamine tetraacetate), chemical oxygen demand concentration. 5 x 10^4 mg/L ~ 9 x 10^4 mg/L.

4.3 Waste bleach

The coloring material is oxidized during the process of oxidizing the metal silver in the emulsion to convert the metal silver into silver ions, and by means of halogen a compound (usually potassium bromide or ammonium bromide) that is re-halogenated to silver bromide, converted to a soluble silver complex, and removed from the emulsion.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 47075-2026|GB/T 47596-2026|GB/T 36380-2025|GB/T 32124-2024|GB/T 42866-2023|GB/T 41952-2022

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