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GB/T 33584.6-2017: Seawater quality requirements and analysis methods for seawater cooling system -- Part 6: Determination of heterotrophic bacteria
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 33584.6-2017 | English | 179 |
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Seawater quality requirements and analysis methods for seawater cooling system -- Part 6: Determination of heterotrophic bacteria
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GB/T 33584.6-2017
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Basic data | Standard 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
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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
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 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.
Introduction
In 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 bacteria
1 Scope
This 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 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
3 terms and definitions
The 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 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
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