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Water treatment is the process of improving water quality by means of physical, chemical or biological methods. The target of water treatment is the water that does not meet the quality requirements.

The ways humans do water treatment has been for many years. The methods of water treatment include physical water treatment and chemical water treatment.

Physical methods include filtration using a variety of filter media with different pore sizes. Also, the method of adsorption and the method of blocking are utilized. To exclude impurities in the water by adsorption or blocking. A more important adsorption method is adsorption with activated carbon. The blocking method is to pass water through the filter material. So that the bulky impurities cannot pass, and thus the clean water is got.

In addition, physical methods also include precipitation methods. It is to let the impurities with smaller specific gravity float on the surface of the water. Or let the impurities with larger specific gravity are deposited underneath. So as to obtain relatively clean water.

The chemical method uses various water treatment chemicals to convert impurities into substances that are less harmful to the human. Or to use water treatment chemicals to concentrate impurities. The oldest chemical water treatment method should be an alum. The alum is added to the water. And after the impurities in the water are collected, the volume becomes large. And the impurities can be removed by a filtration method.

The minimum standards for drinking water are set by the environmental protection department. Industrial water has its own requirements. The physical properties of water are the basic criteria for judging the quality of water. Such as temperature, color, transparency, smell, taste, etc. The chemical properties of water are also important indicators for judging water quality. Such as its pH, dissolved solids concentration, oxygen content, etc.

Some natural waters have a total dissolved solids concentration of up to 1000 mg/L. Canada requires that the concentration of total dissolved solids in drinking water should not exceed 500 mg/L. Much industrial water is also required to be at concentrations not higher than 200 mg/L. This kind of industrial water cannot be used casually even if its physical properties meet the requirements. In addition, the radioactive element content in water is also an important characteristic that must be monitored.

The purpose of water treatment is to improve water quality to a certain standard. There are various types of physical water treatment, chemical water treatment, and biological water treatment depending on the water treatment method. According to the treatment target, there are two major categories of water supply treatment and wastewater treatment. Water supply treatment includes domestic drinking water treatment and industrial water treatment. Wastewater treatment includes domestic sewage treatment and industrial wastewater treatment.

There are several types of industrial water treatments that are particularly closely related to thermal technology. They are boiler feedwater treatment, make-up water treatment, steam turbine main condensate treatment and circulating water treatment. Water treatment is of great significance to industrial production, product quality, and environmental ecology.

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01Nov 2019

Abstract: Maleic anhydride is used as raw material, sodium tungstate is used as catalyst, hydrogen peroxide is used as a cyclizing agent and Ca(OH)2 is used as an initiator. Polyepoxysuccinic acid (PESA) water treatment chemical was prepared by aqueous solution polymerization. PESA is a green, highly effective scale inhibitor. The optimal synthesis conditions were determined […]

31Oct 2019

Benzotriazole Corrosion Inhibitor Analysis in the Action Mechanism Abstract: This post introduces the properties and mechanism of benzotriazole corrosion inhibitors. The synergistic action of benzotriazole and imidazole better illustrates the progress of the sustained release. Combined with the corrosion example of copper in sodium chloride solution to illustrate the corrosion inhibition of triazole compounds. Keywords: […]

17Sep 2019

Abstract: A water-soluble copolymer scale inhibitor was synthesized from acrylic acid (AA) and 2-acryloyl-2-methyl propane sulfonic acid (AMPS). The scale inhibition and dispersion properties of the copolymer were determined. The effects of monomer ratio, reaction temperature and molecular weight modifier on the scale inhibition performance of the copolymer were investigated. Keywords: sulfonic acid, copolymer, scale […]

09Sep 2019

This article describes the commonly used experimental methods for assessing the biodegradability of polyacrylic acid polymers. It is recommended to use the carbon dioxide (PCD), oxygen consumption (COD) and infrared spectroscopy images of biodegradation to comprehensively analyze the biodegradability of polyacrylic acid polymers. The volume of the bioreactor is 2L, the concentration of the tested […]

23Aug 2019

2-Hydroxyphosphonoacetic acid is a good scale inhibitor. Its appearance is a dark brown liquid with a molecular formula of C2H5O6P and a relative molecular mass of 156.03. The preparation method generally has the following three methods. Method One 16.3 parts (0.11 mol/L) 50% aqueous solution of dihydroxyacetic acid (hydrated glyoxylic acid) and 8.2 parts (0.1 […]

30Jul 2019

Through the static scale inhibition test, we studied the scale inhibition performance of PBTC and HEDP on calcium carbonate scale under low-temperature conditions (2°C-15°C). The results show that the scale inhibition performance of PBTC and HEDP on calcium carbonate scale is good at 2°C-15°C. The initial calcium ion + alkalinity has a great influence on […]

27Jun 2019

The full name of DBNPA is 2-2-dibromo-3-nitriloproion amide. It is a broad-spectrum and efficient industrial fungicide. DBNPA is used to prevent bacteria and algae from growing in papermaking, industrial circulating cooling water, mechanical lubricants, pulp, wood, paint, and plywood. 2-2-Dibromo-3-Nitrilopropionamide (DBNPA) is currently popular at home and abroad. Organic bromine fungicides. Sterilization mechanism of DBNPA […]

26Jun 2019

1. The Introduction of Reverse Osmosis Chemicals The reverse osmosis chemical, IRASD-200 is a highly effective scale inhibitor developed for reverse osmosis (RO) systems. During the water treatment, dirt and iron scale are formed on the reverse osmosis membrane. They can degrade the performance of the water treatment system. Contaminants and deposits that accumulate on […]

25Jun 2019

2-mercaptobenzothiazole (MBT) is an important variety of thiazole rubber vulcanization accelerators. At the same time, it is also an important auxiliary agent for oxidation and corrosion resistance. 2-MBT is a pale yellow powder or granule. It has an unpleasant smell. The melting point is above 173.0°C. The relative density is 1.41 to 1.48. 2-mercaptobenzothiazole is […]

25Jun 2019

1. Active component (1-hydroxyethylidene-1 1-diphosphonic acid) content. 1.1 Oxidative decomposition method The active component of the finished product, 1-hydroxyethylidene-1 1-diphosphonic acid, and impurity phosphorous acid. Under appropriate oxidative decomposition conditions, both are converted to n-phosphonic acid. Then measure the data in a corresponding method. The total amount of n-phosphonate represents the amount of phosphinate which […]