WS/T 528-2016 in English
VALIDTechnical specifications for small centralized water supply disinfection
- Issued on:2016-12-26
- Implemented on:2017-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$271.00
| Standard No: | WS/T 528-2016 |
| Document status: | VALID |
| Title in English: | Technical specifications for small centralized water supply disinfection |
| Title in Chinese: | 小型集中式供水消毒技术规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2016-12-26 |
| Implemented on: | 2017-06-01 |
| ICS Classification: | 11.020-Medical Sciences and health care facilities in general |
| Chinese Classification: | C05-Medical science |
| Professional Classification: | WS-Hygiene |
Introduction
Analysis of the Standard's Core Content
This standard, targeting small centralized water supply systems with a daily water supply of less than 1000 m³, establishes a technical framework centered around five disinfection technologies, including chlorine dioxide generators and ultraviolet disinfectors. It focuses on standardizing key aspects such as disinfection equipment selection, operating procedures, and effectiveness monitoring.
Comparative Analysis of Disinfection Methods
| Disinfection Method | Contact Time | Residue Requirements | Applicable Water Quality |
|---|---|---|---|
| Chlorine Dioxide Generator | ≥30min | ≥0.1mg/L | Normal Water Quality |
| Ultraviolet Disinfector | Instantaneous | No Residue | Turbidity≤5NTU |
| Sodium Hypochlorite Generator | ≥30min | ≥0.3mg/L | Conventional Water Quality |
Key Technical Requirements
Chlorine Dioxide Generator Operating Specifications
Chemical equipment must strictly separate the main material tank (sodium chlorate) and the activator tank (hydrochloric acid). Electrolysis systems must be pre-run for 12 hours. Critical Control Points include: ejector pressure regulation, automatic low-material alarm, and hydrogen emission control.
UV Disinfection Intensity Control
The radiation dose of new lamps must be ≥12,000µW·s/cm², and ≥9,000µW·s/cm² during use. Lamp replacement is required when the cumulative operating time exceeds the lifespan specified in the manual.
Implementation Recommendations
- Give priority to disinfection systems equipped with automatic dosing devices to ensure accurate dosage
- Establish a disinfection effectiveness monitoring file and test residual chlorine/chlorine dioxide indicators daily
- The disinfection room should be set up independently and equipped with mechanical ventilation and emergency facilities
- Operators must hold two certificates (health certificate + training certificate)
Background of Standard Evolution
This standard is based on the "Law on the Prevention and Control of Infectious Diseases" and fills a gap in the disinfection regulations for small water supply systems. Compared with the 2002 edition of the "Disinfection Technical Specifications", it adds quantitative indicators for ultraviolet disinfection devices and exhaust gas treatment requirements for ozone generators, reflecting technological progress.
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