GB/T 33584.6-2017 English PDFUS$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 33584.6-2017: Seawater quality requirements and analysis methods for seawater cooling system -- Part 6: Determination of heterotrophic bacteria Status: Valid
Basic dataStandard ID: GB/T 33584.6-2017 (GB/T33584.6-2017)Description (Translated English): Seawater quality requirements and analysis methods for seawater cooling system -- Part 6: Determination of heterotrophic bacteria Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Z17 Classification of International Standard: 07.060; 13.060 Word Count Estimation: 9,926 Date of Issue: 2017-05-12 Date of Implementation: 2017-12-01 Quoted Standard: GB/T 6682 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the water quality requirements for seawater cooling and the method of measuring the heterotrophic bacteria in seawater cooling water by using the plate counting method. The methods and methods of reagents and materials, instruments and equipment, analysis and determination, colony count and colony count are calculated and reported. This standard is applicable to the determination of heterotrophic bacteria in seawater cooling water and also to the determination of heterotrophic bacteria in the original seawater. GB/T 33584.6-2017: Seawater quality requirements and analysis methods for seawater cooling system -- Part 6: Determination of heterotrophic bacteria---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Seawater quality requirements and analysis methods for seawater cooling system - Part 6. Determination of heterotrophic bacteria 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 6. determination of heterotrophic bacteria coolingsystem-Part 6. Determination ofheterotrophicbacteria 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 ForewordGB/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 heterotrophic bacteria. This part is Part 6 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 of the drafting unit. State Oceanic Administration Tianjin desalination and comprehensive utilization of the Institute, Zhejiang Guohua Zhejiang Power Generation Limited. The main drafters of this part. Li Yahong, Zhou Zheng, Zhao Xiaofang, Zhang Yi, Yuan Hao, Zhang Liantao, Wu Pengjie.IntroductionIn the sea water as the water source of the water cooling system is easy to breed microbial dirt deposition and other hazards, therefore, in the process of running the system often The amount of microbial biomass is to be used to assess the degree of biological contamination of the system and the effectiveness and economy of the biocontrol technology used, most of which Often measured the total number of mucus-forming bacteria. But in the mucus-forming bacteria in the determination process, the need to use a complete set of mud collection device, the sample for the biological Viscous samples, the sample state is an aqueous solid, subject to quantitative dilution after grinding determination, resulting in this sampling method is limited in practice, and research Grinding, dilution of mud samples and then measured, but also increased the determination of the steps and the rate of contamination, making the detection of mucus-forming bacteria is difficult to daily. The heterotrophic bacteria identified in this section are a class of planktonic bacteria living in seawater cooling water, and their presence and quantity can directly reflect the cold water But the degree of biological pollution system. This part of the abandoned mud collection device, direct collection of water samples to determine the number of heterotrophic bacteria, simplifying the sampling and preparation steps Sudden, so that the determination of heterotrophic bacteria can be daily, to improve the operation and management of water cooling water level. Water quality requirements for seawater cooling and analysis and detection Part 6. determination of heterotrophic bacteria1 ScopeThis part of GB/T 33584 specifies the requirements for seawater cooling water quality and the determination of heterotrophic bacteria in seawater cooling water by plate counting Principle, reagents and materials, instruments and equipment, analysis and determination, colony count, the calculation of the total number of colonies and reporting methods. This part is applicable to the determination of heterotrophic bacteria in seawater cooling water and also to the determination of heterotrophic bacteria in the original seawater.2 normative reference documentsThe 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 methods3 terms and definitionsThe following terms and definitions apply to this document. 3.1 Heterotrophic bacteria The use of organic molecules as energy microbes. 3.2 Colony forming unit colony-formingunit; CFU The number of colonies determined by plate counting. 3.3 Spread colony In the agar medium surface was diffuse growth of colonies.4 water quality requirementsThe 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 ...... |
