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How many kinds of sewage treatment agents are there? What are commonly used sewage treatment agents?

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  • Release Time:2022-01-20 10:45
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【Summary】How many kinds of sewage treatment agents are there? What are commonly used sewage treatment agents?

How many kinds of sewage treatment agents are there? What are commonly used sewage treatment agents?

【Summary】How many kinds of sewage treatment agents are there? What are commonly used sewage treatment agents?

  • Categroy:News
  • Author:
  • Origin:
  • Release Time:2022-01-20 10:45
  • Views:
Information

Water treatment agent is a chemical agent used in industrial water, domestic water and wastewater treatment process.  In the process of industrial water, domestic water and wastewater treatment, chemical agents added to clean water, control corrosion, scaling and microbial slime are called water treatment agents.  Water treatment agents include chemicals used for the disposal of water in industry, agriculture, environmental protection, urban construction and daily life, relating to cooling water, boiler water, drinking water, air conditioner water, sewage and process water including oil production water.  

1. The flocculant  

Flocculants are generally divided into three categories: inorganic flocculants (polyaluminum chloride, polyferric sulfate, aluminum sulfate, etc.), organic flocculants (polyacrylamide, acrylamide copolymer, polyethylene imine, etc.), natural polymer flocculants (starch.  Chitosan, guar gum, etc.).  

2. The corrosion inhibitor  

Generally speaking, it is divided into inorganic corrosion inhibitors (chromate, nitrite, silicate, etc.), organic corrosion inhibitors (phosphate, phosphonic acid, etc.)  

3. The scale inhibitors  

It is divided into natural polymer scale inhibitor (lignin, cellulose, chitosan, etc.), phosphorus-containing polymer scale inhibitor, polymer scale inhibitor (polyacrylic acid, sodium polyacrylic acid, etc.)  

4. The fungicide  

Including oxidized fungicides and non - oxidized fungicides.  ① Oxidation fungicides mainly include chlorine series (such as chlorine, chlorine dioxide, stable chlorine dioxide, hypochlorous acid, sodium hypochlorite, etc.), bromine series (such as bromine, active bromine, chlorine bromine, etc.), ozone and hydrogen peroxide.  ② Non-oxidizing fungicides mainly include ionic fungicides, non-ionic fungicides and compound fungicides.  

5. Cleaner  

There are many kinds of cleaning agents. According to the characteristics of cleaning agents, they can be divided into acid cleaning agents, alkaline cleaning agents, chelating cleaning agents and cleaning auxiliaries.  In fact, the cleaning agent should be selected according to the material and structural characteristics of the cleaning object.  

6. Adsorbent  

Commonly used sorbents are carbon as raw materials of various activated carbon sorbents and metal, non-metallic oxide sorbents (such as silica gel, alumina, molecular sieve, natural clay, etc.).  The adsorbent with considerable scavenge agent 0 is activated carbon, which has good adsorption performance but high cost. It was used to adsorb toluene in water in songhua River event.  Followed by molecular sieve, silica gel, active aluminum, polymer adsorbents and biological adsorbents.  

7. Defoaming agent  

The chemical structure and composition of defoaming agent can be divided into mineral oil, alcohol, fatty acid and fatty acid ester, amide, phosphate ester, silicone, polyether, polyether modified polysiloxane defoaming agent and so on.

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