GB14470.2-2002
Discharge standard for water pollutants from ordnance industry--Initiating explosive material and relative composition
兵器工业水污染物排放标准 火工药剂
GB 14470.2-2002 is a current mandatory Chinese national standard for Discharge standard for water pollutants from ordnance industry--Initiating explosive material and relative composition. It appears in the Chemicals compliance cluster with a product safety focus and has an implementation date of Jul 1, 2003.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard is applicable to the discharge management of water pollutants from initiating explosive material production enterprises in China. It covers environmental impact assessments, design, construction, and post-construction pollution control for facilities manufacturing products such as diazodinitrophenol, lead azide, and sodium azide. It is mandatory for all ordnance industry facilities producing these specific explosive materials. Note: It replaces the older GB 14470.2-93 and several other specific standards.
Technical requirements
The standard specifies the maximum allowable daily average discharge concentration of water pollutants and the maximum allowable wastewater discharge per unit of product. It categorizes requirements based on the construction date of the facility, distinguishing between existing facilities (built before July 1, 2003) and new, expanded, or modified projects (built after July 1, 2003). Key regulated parameters include pH value, Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD5), colority, and total lead. It also sets specific limits for characteristic pollutants like nitrophenols, hydrazine, thiocyanates, and iron cyanide complexes depending on the specific explosive product manufactured. Facilities discharging into municipal secondary wastewater treatment plants must still comply with the characteristic pollutant limits specified in this standard. Additionally, the standard mandates the separation of process wastewater from sanitary wastewater and encourages the recovery and reuse of explosive particles, lead salts, and wash water to minimize secondary pollution and reduce overall treatment volumes.
Testing methods
Monitoring must be conducted at designated sampling points, with specific characteristic pollutants like total lead, azides, and hydrazine sampled at the workshop discharge outlet, and others at the factory's total discharge outlet. The standard references various national methods for analysis, including the glass electrode method for pH (GB 6920), atomic absorption spectrophotometry for total lead (GB 7475), and the dichromate method for COD (GB 11914). It also includes an informative annex detailing a spectrophotometric method for determining nitrophenols in wastewater.
FAQs
What products are regulated under GB 14470.2-2002?
It regulates water pollutant discharges from the production of initiating explosive materials, including diazodinitrophenol, lead azide, lead trinitroresorcinate, D.S co-precipitated primary explosives, K.D double salt primary explosives, lead thiocyanate, lead ferrocyanide, sodium azide, and trinitroresorcinol.
Are there different compliance tiers based on facility age?
Yes, the standard sets different discharge limits based on whether the facility was constructed before July 1, 2003, or on/after that date. Newer facilities are subject to stricter Tier 1 limit requirements for certain pollutants.
Does this standard apply to wastewater discharged into municipal treatment plants?
Yes, even if discharging into a municipal secondary wastewater treatment plant, characteristic pollutants such as nitrophenols, azides, hydrazine, and total lead must meet the limits specified in this standard.
The summary above provides a high-level overview of GB 14470.2-2002. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 14470.2-2002 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Environmental protection
- CCS
- Z64
- ICS
- 13.060.30
- Competent department
- Ministry of Ecology and Environment
- Technical committee
- Ministry of Ecology and Environment
Relationships
Replaces:GB 4277-1984, GB 4279-1984, GB 4278-1984, GB 14470.2-1993