HJ 2054-2018 in English
VALIDTechnical specification for wastewater treatment of phosphate fertilizer industry
- Issued on:2018-04-08
- Implemented on:2018-06-01
- File Format:PDF
- Delivery:Via email within 5 business days
$379.00
本标准规定了磷肥工业废水治理工程设计、施工、验收和运行管理等技术要求。
本标准适用于生产磷肥主要产品的企业废水治理工程的建设与运行管理，可作为磷肥工业建设项目环境影响评价和废水治理工程设计、施工、验收及建成后运行与管理的技术依据。
其他磷肥工业产品的废水治理工程可参照执行。
Introduction
Analysis of the core content of the standard
| Wastewater type | Characteristic pollutants | Recommended process | Removal rate requirement |
|---|---|---|---|
| Wastewater containing phosphorus and fluoride | F⁻:1200-7000mg/L PO₄³⁻:4000-35000mg/L | Secondary neutralization + secondary precipitation pH control 3-5→6-9 | Fluoride ≥90% Total phosphorus ≥95% |
| Wastewater containing silicon and fluoride | F⁻:2000-8000mg/L SiO₂:500-20000mg/L | Three-stage neutralization + three-stage precipitation pH control 6-7→8-9→10-11 | Fluoride ≥85% SS≤30mg/L |
Key process design parameters
Neutralization reaction system
When using mechanical stirring neutralization tank, please note:
- Mixing power 4-8W/m³(wastewater)
- Lime dosage is automatically controlled by ORP
- Anti-corrosion material: rubber lining or PP material
Sedimentation unit
Special design is required for silicon-containing wastewater:
- Surface load is reduced to 0.4-0.5m³/(m²·h)
- Add a sludge return system (return ratio 10-20%)
- Inclination angle of inclined tube settler ≥ 60°
Technological innovation highlights
Internal circulation process realizes quality-based reuse:
- Grinding section drainage→acidic circulating water replenishment
- Concentrated condensate→filter cloth washing water source
- Phosphogypsum slag field return water→reaction flash cooling
Typical cases show that fresh water consumption can be reduced by 40%.
Implementation Guidelines
Sludge treatment
Must meet the following requirements:
- Moisture content after dehydration ≤70%
- Plate and frame filter press complies with HJ/T283
- CaF₂ content＞60% can be used as building material
Online monitoring
Mandatory installation:
- Online instrument for pH, F⁻, TP parameters
- Data storage ≥3 years
- Anti-freeze measures are set at the sampling port
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