Water is the source of life. Water resources are closely related to a series of human activities such as our daily life, industrial development, and agricultural development. The rapid development of society has also accelerated the waste of water resources and the pollution of water resources. To this end, the country has formulated a series of water quality testing standards and water purification methods to protect water resources, which provides a basis and relevant methods for water quality testing and full use of water resources. The agent of Suzhou Rongxuan Environmental Protection Co., Ltd .: Cote Water Quality Online Monitor. Through years of actual water quality testing applications and surveys of key water quality analysis laboratories, different types of water quality are tested by category to achieve reasonable use of social resources and human costs to meet different needs. Testing requirements.

       1. Testing of drinking water. Drinking water must meet three conditions: no pollution, no degradation (water full of vitality), and physiological needs of the human body (water containing similar beneficial mineral elements of the human body, and the pH value is weakly alkaline). )! The drinking water published by the World Health Organization must meet the following standards: 1) Free of toxic to human body. Harmful and odorous substances; 2) Moderate hardness of water (calculated with calcium carbonate: 50-200mg / L); 3) The ratio of minerals and trace elements in water is close to the body's liquid phase (calcium content> = 8mg / L); 4) Medium and weak alkaline (pH 7.0-8.0); 5) Moderate dissolved oxygen and carbon dioxide in water (dissolved oxygen in water> = 6mg / L, carbon dioxide content 10-30mg / L ); 6) small molecule water (this is one of the indicators of water activity, 5-6 small molecule water); 7) the physiological function of water should be strong (including osmotic power, dissolving power, metabolic power, etc.). The drinking water quality testing standards are mainly based on the "Sanitary Standards for Drinking Water" (GB 5749-2006).
        2. Pure water detection Pure water, also known as pure water and deionized water, refers to water that meets the "Sanitary Standards for Drinking Water" as raw water, and passes the electrodialyzer method, ion exchanger method, reverse osmosis method, distillation method, and Other suitable processing methods, the prepared sealed in the container, without any additives, colorless and transparent, can be directly drinking water.
       3. Fishery water test The fishery water quality test standard is mainly based on the fishery water quality standard (GB11607-89).
       4. Testing of bottled pure water Pure water refers to H2O without impurities. From an academic perspective, pure water, also known as high-purity water, refers to water with extremely high chemical purity. It is mainly used in the fields of biopharmaceuticals, analytical chemistry, electronic metallurgy, aerospace, energy and power, etc., but its water purity is quite high. So the most common application in general is the electronics industry. The main testing standards for bottled pure water are: GB173223-1998 "Bottled Drinking Pure Water" and GB17324-1998 "Bottled Drinking Pure Water Hygienic Standard".
       5. Detection of drinking natural mineral water In December 2008, the General Administration of Quality Supervision, Inspection and Quarantine and Standardization of the People's Republic of China issued two national standards, "Drinking Natural Mineral Water" and "Test Methods for Drinking Natural Mineral Water," "Drinking Natural Mineral Water" ( GB8537-2008) was implemented on October 1, 2009, and the "Test Method for Drinking Natural Mineral Water" (GB / T8538-2008) was implemented on April 1, 2009. The biggest highlight of this standard is the addition of bromate and three pathogenic bacteria indicators, while removing the total number of colonies.
       6. Farmland irrigation water testing Farmland irrigation water quality standards (According to the purpose of irrigation water, agricultural irrigation water quality requirements are divided into two categories: one refers to the irrigation area where industrial wastewater or urban sewage is used as the main source of agricultural water and long-term use. Irrigation volume : Paddy field 800 m / mu year, dry field 300 m / mu year. The second type refers to the irrigation area where industrial wastewater or urban sewage is used as supplementary water source for agricultural water, and the sewage is mixed irrigation and reduced irrigation. The amount does not exceed half of the first type GB5084-2005 replaces GB5084-92 National Environmental Protection Agency 2005-07-21 Approved for implementation 2006-11-01.
       7. Groundwater testing refers to water stored in stratum voids below the aerated zone, including rock pores, fissures and karst caves. Groundwater is an important part of water resources. Because of the stable water quantity and good water quality, it is one of the important water sources for agricultural irrigation, industry and mining, and cities. However, under certain conditions, changes in groundwater can also cause unfavorable natural phenomena such as swampification, salinization, landslides, and ground subsidence.
       8. Surface water detection refers to the water that exists on the surface of the earth's crust and is exposed to the atmosphere. It is a general name for four types of water bodies: rivers, glaciers, lakes, and swamps. It is also called "land water". It is one of the important sources of water for human living and the main component of water resources in various countries. Surface Water Environmental Quality Standard (GB 3838-2002).
       9. Test water test. The basis for test water test standards is: GB / T 6682-2008.
       10. Sewage detection. Sewage usually refers to waste water that is polluted and comes from living and production. Sewage mainly includes domestic sewage, industrial wastewater and initial rainwater. The main pollutants of sewage include pathogen pollutants, oxygen-consuming pollutants, plant nutrients, toxic pollutants, etc. The main test standards are based on the comprehensive sewage discharge standard GB8978-1996.
       11, seawater testing, seawater is inexhaustible. Seawater is a veritable liquid mineral deposit, with an average of 35.7 million tons of minerals per cubic kilometer of seawater. Of the more than 100 elements known in the world, 80% can be found in seawater. Seawater is also the source of freshwater on the land and the regulator of the climate. The world ’s oceans evaporate 4.5 million cubic kilometers of freshwater each year, 90% of which return to the ocean through rainfall, 10% become rain and snow on the ground, and then follow the river and return to the ocean . Desalination technology is developing into an industry. Some people predict that with the deterioration of the ecological environment, the last way for humans to resolve water shortages is likely to be desalination of seawater. The seawater detection standards are: GB 17378-1998.
       12, swimming pool water testing, swimming pool water quality testing standards based on: CJ224-2007.
       13. Reclaimed water test. Reclaimed water refers to water that has been treated properly and has reached certain water quality targets, meets certain requirements for use, and can be used for beneficial purposes. Compared with desalination and cross-basin water transfer, reclaimed water has obvious advantages. From an economic point of view, the cost of recycled water is the lowest. From an environmental point of view, wastewater recycling helps improve the ecological environment and achieve a virtuous cycle of water ecology. The main test standards are based on the standard for water quality of urban miscellaneous water GB / T18920-2002, and the test standards for the quality of recycled water for landscape environment water are GB / T 18921-2002.
       14. Detection of ecological landscape water, ecological landscape water means water used for ecological landscape and conforming to ecological landscape water. Ecological landscape water generally requires clear, odorless, and pollution-free. Ecological landscape water can be water from nature that conforms to ecological landscape water, it can also be treated by modern technology and facilities, and it can also be used in modern landscapes. Maintain ecologically standard water resources. Water quality test standard basis: GB / T 18921-2002.
       15. Boiler water testing, the main standard basis for boiler water quality testing is: industrial boiler water quality GB1579-2006.
       16. Industrial water testing. Industrial water refers to the amount of water used directly and indirectly in industrial production, using its water quantity, water quality and water temperature. The main uses are: ① raw water, used directly or as part of the raw water; ② product processing water; ③ boiler water; ④ cooling water. Among them, cooling water accounts for about 60 to 70% of industrial water. Although the industrial water consumption is large, the actual consumption is not much. Generally, the water consumption is about 0.5 to 10% of its total water consumption, that is, more than 90% of the water can be reused after proper treatment after use. Water quality test standard basis: GB / T 19923-2005.