Project Background

  • Boiler water (medium) inspection includes water quality testing of industrial boilers and utility boilers, as well as quality testing of organic heat transfer fluids. Industrial boilers are important thermal power equipment in China, and are widely used as a general process in the production processes of industries such as chemical engineering, papermaking, pharmaceuticals, textiles and non-ferrous metal smelting, as well as in civil and commercial heating applications. Utility boilers, also known as "power plant boilers", refer to medium and large-sized boilers in power plants that supply steam of specified quantity and quality to steam turbines.

  • Regular inspection and testing of boiler water (medium) can prevent boiler scaling and corrosion, keep heating surfaces clean, and ensure the quality of water vapor and organic heat transfer fluids. The inspection and testing of boiler water (medium) is periodic in nature, which helps maintain the stable operation of boilers, provides a basis for boiler operating conditions, facilitates rapid fault diagnosis, and is conducive to safe production. It plays an important role in strengthening quality and safety, promoting industrial development, and advancing the safe economic and social development.

  • The VVNA Industrial Water Inspection and Testing Solution covers boiler feedwater and industrial circulating cooling water, and is capable of detecting parameters including pH, conductivity, turbidity, phenolphthalein alkalinity, total alkalinity, hardness, chloride ions, COD, calcium ions, magnesium ions, ammonium, residual chlorine, etc. Regular inspection and testing of boiler water (medium) and circulating cooling water can prevent scaling and corrosion, ensuring the long-term stable operation of the system.

Relevant Standards

Relevant Standards
Boiler Water Quality Standards and Guidelines
  • GB/T 1576-2018 Water Quality for Industrial Boilers

  • GB/T 16811-2018 Operation Effect and Monitoring of Water Treatment Facilities for Industrial Boilers

  • GB/T 12145-2016 Water and Steam Quality for Thermal Power Generating Units and Steam Power Equipment

  • DL/T 1717-2017 Technical Guidelines for Chemical Supervision of Gas-Steam Combined Cycle Power Plants

  • DL/T 1924-2018 Water and Steam Quality Control Standards for HRSGs of Gas-Steam Combined Cycle Units

  • GB/T 50050-2017 Code for Design of Industrial Circulating Cooling Water Treatment

  • DL/T 912-2005 Water and Steam Quality Standards for Supercritical Thermal Power Generating Units


Water Quality Analysis for Industrial Circulating Cooling Water and Industrial Boilers
  • GB/T 6907-2022 Methods for Analysis of Water Used in Boilers and Cooling Systems - Sampling Methods of Water Samples

  • GB/T 34322-2017 Automatic and Continuous Determination of Water Quality in Boiler Water and Cooling Water - Potentiometric Titration Method (Conductivity, pH, Phenolphthalein Alkalinity, Total Alkalinity, Chloride Ions and Hardness)

  • GB/T 6904-2008 Determination of pH in Industrial Circulating Cooling Water and Boiler Water

  • GB/T 15456-2019 Determination of Chemical Oxygen Demand (COD) in Industrial Circulating Cooling Water - Permanganate Index Method

  • GB/T 6908-2018 Methods for Analysis of Water Used in Boilers and Cooling Systems - Determination of Conductivity 【Leici Participated in Standard Drafting】

  • HG/T 2157-2011 Determination of Ammonium in Industrial Circulating Cooling Water - Potentiometric Method

  • GB/T 12157-2022 Determination of Dissolved Oxygen in Industrial Circulating Cooling Water and Boiler Water

  • HG/T 3539-2012 Determination of Iron Content in Industrial Circulating Cooling Water - o-Phenanthroline Spectrophotometric Method

  • GB/T 12151-2005 Methods for Analysis of Water Used in Boilers and Cooling Systems - Determination of Turbidity (Formazin Turbidity)

  • HG/T 2156-2009 Determination of Anionic Surfactants in Industrial Circulating Cooling Water - Methylene Blue Spectrophotometric Method

  • GB/T 15893.1-2014 Determination of Turbidity in Industrial Circulating Cooling Water - Scattered Light Method

  • GB/T 20780-2006 Industrial Circulating Cooling Water - Determination of Carbonate Alkalinity

  • GB/T 1576-2018 Water Quality for Industrial Boilers Appendix E (Normative Appendix) - Determination of Alkalinity - Acid-Base Titration Method

  • GB/T 15452-2009 Determination of Calcium and Magnesium Ions in Industrial Circulating Cooling Water - EDTA Titration Method

  • GB/T 6909-2018 Methods for Analysis of Water Used in Boilers and Cooling Systems - Determination of Hardness 【Leici Participated in Standard Drafting】

  • GB/T 14424-2008 Determination of Residual Chlorine in Industrial Circulating Cooling Water

  • GB/T 15453-2018 Determination of Chloride Ions in Industrial Circulating Cooling Water and Boiler Water 【Leici Participated in Standard Drafting】


Water Quality Analysis for Utility Boilers
  • DL/T 502.1-2006 Methods for Analysis of Water and Steam in Thermal Power Plants - Part 1: General Principles

  • DL/T 502.5-2006 Methods for Analysis of Water and Steam in Thermal Power Plants - Part 5: Determination of Acidity

  • DL/T 502.4-2006 Methods for Analysis of Water and Steam in Thermal Power Plants - Part 4: Determination of Chlorides (Electrode Method)


Solution

VVNA is committed to fully integrating technology with applications. Through keen insight into customer needs and accurate grasp of trends in the water quality analysis industry, relying on strong R&D capabilities and solid technical accumulation, VVNA rapidly develops targeted and innovative water quality testing product solutions. Customer-oriented innovative achievements have been widely applied in fields such as drinking water, groundwater, surface water, municipal wastewater, industrial wastewater, semiconductor ultrapure water, pharmaceutical/power industry water and other industrial purified water.

VVNA has launched a water quality analyzer solution for industrial water, which can detect the following parameters including but not limited to: pH, conductivity, turbidity, phenolphthalein alkalinity, total alkalinity, hardness, chloride ions, COD, calcium ions, magnesium ions, ammonium, residual chlorine, etc. Relevant instruments are as follows:


Product Recommendations:
Test ParameterProduct Recommendation
Multi-parameter Water Quality AnalyzerVN Series Portable Multi-parameter Water Quality Analyzer
Portable TurbidimeterVN3100 Portable Turbidimeter
Residual ChlorineVI-CL100 Portable Residual Chlorine Tester 
Total ChlorineVI-CL101 Portable Total Chlorine Tester
ColorityVI3200 Portable Colorimeter
Other Single-parameter Water Quality AnalyzersVI Series Portable Single-parameter Water Quality Analyzer