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GB/T 33584.4-2017: Seawater quality requirements and analysis methods for seawater cooling system -- Part 4: Determination of sulfate
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GB/T 33584.4-2017: Seawater quality requirements and analysis methods for seawater cooling system -- Part 4: Determination of sulfate

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Seawater quality requirements and analysis methods for seawater cooling system.Part 4. Determination of sulfate ICS 07.060; 13.060 Z17 National Standards of People's Republic of China Water quality requirements for seawater cooling and analysis and detection Part 4. determination of sulphate coolingsystem-Part 4. Determination ofsulfate 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

GB/T 33584 "seawater cooling water quality requirements and analysis of detection methods" is divided into six parts. Part 1. Determination of calcium and magnesium ions; - Part 2. Determination of zinc; - Part 3. Determination of chlorides; - Part 4. Determination of sulphate; - Part 5. Determination of dissolved solids; Part 6. Determination of isobacteria. This part is part 4 of GB/T 33584. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This section is presented by the State Oceanic Administration. This part is headed by the National Marine Standardization Technical Committee (SAC/TC283). This part is drafted by the Tianjin Maritime Desalination and Comprehensive Utilization Research Institute of the State Oceanic Administration. The main drafters of this part. Wu Yunfang, Jiao Chunlian, Cheng Guochen, Yin Jianhua, Xu Xu, Wu Dongxia, Xu Na, Liu Yu. Water quality requirements for seawater cooling and analysis and detection Part 4. determination of sulphate WARNING - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.

1 Scope

This part of GB/T 33584 specifies the water quality requirements for seawater cooling and the determination of sulfuric acid in seawater cooling water by spectrophotometer Salt content method. This part is applicable to the determination of sulfate content in seawater cooling water at 1000mg/L ~ 6000mg/L (calculated as SO2-4).

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 6682 Analytical laboratory water specifications and test methods GB/T 12806 laboratory glass instrument single standard line capacity bottle GB/T 12807 Laboratory glass instruments - Index pipettes GB/T 12808 Laboratory glass instruments Single line suction pipette

3 water quality requirements

The main water quality indicators of seawater cooling water shall meet the requirements of Table 1. Table 1 Main requirements for water quality of seawater cooling water Item unit allowable value Calcium ion (Ca2) mg/L ≤1000 Magnesium ion (Mg2) mg/L ≤3200 Zinc ion (Zn2) mg/L ≤2 Chloride (Cl-) mg/L ≤42000 Sulfate (SO2-4) mg/L ≤ 6000 Dissolved solid g/L ≤ 100 Isozyme CFU/mL ≤ 5.0 × 105 Note 1. The permissible values for Ca2, Mg2, Cl-, SO2-4, and isozyme are derived from 6.1.2 and 6.1.3 of GB/T 23248-2009. Note 2. The permissible value of Zn2 is derived from GB 8978-1996 Table 4 Class II pollutant maximum allowable discharge concentration level standard. Note 3. The permissible value of the dissolved solids is determined by the maximum concentration of N = 2.5 times the actual seawater cooling. ...