GB/T 39835-2021 in English
VALIDWater quality for domestic seawater
- Issued on:2021-03-09
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 39835-2021大生活用海水水质》由TC283（全国海洋标准化技术委员会）归口，主管部门为自然资源部(海洋)。
Introduction
Standard Background and Significance
This standard responds to the national marine power strategy and is jointly formulated by the Tianjin Seawater Desalination Institute of the Ministry of Natural Resources and other institutions. It fills the gap in water quality specifications for large domestic seawater in municipal applications such as toilet flushing. Compared with HY/T167-2013, three key indicators such as anionic detergents and dissolved oxygen have been added.
Analysis of core indicators
| Indicator | Limit | Risk of exceeding the limit | Detection method |
|---|---|---|---|
| Coliform bacteria | ≤10000/L | Biological contamination | Fermentation method/membrane filter method |
| Anionic detergent | ≤1.0mg/L | Pipeline corrosion | Methylene blue spectrophotometry |
Technical innovation
The practice in a demonstration area in Qingdao shows that when using the five-day culture method to detect BOD5, special attention should be paid to completing pretreatment within 6 hours after sampling to avoid data deviation exceeding 15%.
Implementation suggestions
- The pipeline system should be marked with deep sea blue (B13) to form a visual isolation from the drinking water network
- It is recommended to establish a biological monitoring and early warning mechanism in combination with GB17378.7
- The frequency of turbidity and suspended solids testing should be increased to 3 times a week during the rainy season
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