1. Introduction to Industrial Water

Industrial water primarily refers to the water used by various departments of industrial and mining enterprises during the industrial production process (or period), including water for manufacturing, processing, cooling, air conditioning, washing, boilers, as well as water for the daily living needs of employees within the factory.

2. Testing Scope

(1) Production water testing: Water directly used in industrial production is referred to as production water. Manufacturing water includes indirect cooling water, process water, and boiler water.

(2) Indirect cooling water testing: In the industrial production process, to ensure production equipment operates at normal temperatures, cooling water used to absorb or transfer excess heat from production equipment (separated by heat exchanger walls or equipment) is termed indirect cooling water.

(3) Process water testing: Water used in industrial production for manufacturing and processing products, as well as water related to the manufacturing process, is called process water. Process water includes product water, washing water, direct cooling water, and other water.

(4) Product water testing: In the production process, the portion of water required as a raw material for manufacturing products is called product water (this water either becomes part of the product or participates in chemical reactions).

(5) Washing water testing: Water used for washing raw materials and semi-finished products during the production process is referred to as washing water.

(6) Direct cooling water testing: In the production process, cooling water that comes into direct contact with products or semi-finished products (including direct spray water for temperature and humidity adjustment) to meet process requirements is called direct cooling water.

(7) Other process water testing

(8) Boiler water testing: Water required for generating steam for processes or heating/power generation, as well as water for boiler water treatment, is collectively referred to as boiler water. Boiler water supply includes boiler feedwater and boiler water treatment water.

(9) Boiler feedwater testing: Water directly used to generate steam for industrial use is called boiler feedwater. Boiler feedwater consists of two parts: condensate obtained from steam cooling and supplemental softened water.

(10) Boiler water treatment water testing: Water used for regenerating softened water prepared for boilers, such as for rinsing and other items, is termed boiler water treatment water.

3. Testing Items

(1) Microbiological testing

(2) Sensory properties

(3) Physical indicators

(4) Comprehensive indicators

(5) Metal elements

(6) Inorganic non-metals

(7) Organic substances

4. Related Standards

"Analysis of Water Used in Boilers and Cooling Water - Determination of Zinc Ion - Zincon Spectrophotometry" GB/T 10656-2008

"Determination of Silicon in Industrial Circulating Cooling Water and Boiler Water" GB/T 12149-2007

"Determination of Oil Content in Boiler Water and Cooling Water" GB/T 12152-2007

"Analysis of Water Used in Boilers and Cooling Water - Determination of Total Aluminum" GB/T 12154-2008

"Determination of Solid Matter in Industrial Circulating Cooling Water and Boiler Water" GB/T 14415-2007

"Analysis of Water Used in Boilers and Cooling Water - Determination of Total Silicon" GB/T 14417-1993

"Analysis of Water Used in Boilers and Cooling Water - Determination of Iron" GB/T 14427-2008

"Determination of Copper and Zinc in Industrial Circulating Cooling Water and Scale - Atomic Absorption Spectrometry" GB/T 14637-2021

"Determination of Potassium and Sodium Content in Industrial Circulating Cooling Water and Boiler Water" GB/T 14640-2008 

"Determination of Fluoride, Chloride, Phosphate, Nitrite, Nitrate, and Sulfate in Industrial Circulating Cooling Water and Boiler Water - Ion Chromatography" GB/T 14642-2009

"Industrial Circulating Cooling Water - Determination of Total Alkalinity and Phenolphthalein Alkalinity" GB/T 15451-2006

"Analysis of Water Used in Boilers and Cooling Water - Determination of Conductivity" GB/T 15452-2009

"Determination of Chloride Ion in Industrial Circulating Cooling Water and Boiler Water" GB/T 15453-2008

"Determination of Sodium, Ammonium, Potassium, Magnesium, and Calcium Ions in Industrial Circulating Cooling Water - Ion Chromatography" GB/T 15454-1995

"Water Quality for Industrial Boilers" GB/T 1576-2008

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

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

"Analysis of Water Used in Boilers and Cooling Water - Methods for Sampling Water" GB/T 6907-2022

"Analysis of Water Used in Boilers and Cooling Water - Determination of Conductivity" GB/T 6908-2018

"Analysis of Water Used in Boilers and Cooling Water - Determination of Hardness" GB/T 6909-2018

"Analysis of Water Used in Boilers and Cooling Water - Determination of Nitrite" GB/T 6912-2008

"Analysis of Water Used in Boilers and Cooling Water - Determination of Phosphate" GB/T 6913-2008

"Water Quality Requirements for Marine Auxiliary Boilers" GB/T 24947-2010

"Performance Evaluation Method for Boiler Water Treatment Chemicals - Dynamic Method" HG/T 3924-2007

"Supervision and Management Rules for Boiler Water (Medium) Treatment" TSG G5001-2010

"Inspection Rules for Boiler Water (Medium) Treatment" TSG G5002-2010