NY 687-2003Discharge standard of wastewater pollution for natural rubber processing (English PDF)

Foreword

This standard is proposed and managed by the Agricultural Reclamation Bureau of the Ministry of Agriculture.

1 Scope

This standard specifies the maximum allowable emission concentration of natural rubber processing wastewater according to the production process and the discharge of wastewater pollutants.

The maximum allowable displacement of tons of products.

This standard applies to the supervision and management of the discharge of natural rubber processing wastewater pollutants, as well as the environmental impact assessment, design, and construction of construction projects.

Work acceptance and emission management after completion.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.

GB 3838 Surface Water Environmental Quality Standard GB 6920 Determination of pH of water - Glass electrode method GB/T 7478 Determination of ammonium in water - Distillation and titration GB/T 7488 water quality five-day biochemical oxygen demand (BOD5) determination dilution and inoculation method GB/T 11901 Determination of suspended solids by weight method GB/T 11914 Determination of chemical oxygen demand in water - Dichromate method

3 Terms and definitions

The following terms and definitions apply to this standard.

Producing natural raw rubber with natural latex or rubber gel as raw material and producing natural latex as raw material to produce concentrated latex and gelatin rubber Waste water discharged.

The amount of water that is directly used in process production during natural rubber processing.

4 Standard value

This standard specifies the maximum allowable emission concentration of natural rubber processing wastewater pollutants and the maximum allowable discharge per ton of product according to different years.

The amount of water.

4.1 For enterprises that have been built (including renovation and expansion) before December 31, 2003, the discharge of wastewater pollutants must comply with the requirements of Table 1.