Activated carbon can be used in various fields, and in the field of environmental engineering, it should also be widely used. coconut activated carbon The adsorption capacity of activated carbon is more prominent, so it is favored by people from all walks of life.
Especially in recent years, people's awareness of environmental protection has increased, and activated carbon has begun to be widely used in environmental engineering in order to use the adsorption capacity of activated carbon to achieve the purpose of purifying the environment. Activated carbon has practical application effects in water treatment methods, specifically in the following aspects:
1. Activated carbon adsorption of heavy metal ions in water
There are many heavy industries in our country. During the production process, these heavy industries will discharge a large amount of waste water, which will pollute the surrounding waters and cause serious damage to the environment. Activated carbon has obvious chemical and physical properties, and can effectively adsorb heavy metal ions in wastewater discharged from heavy industry production.
In the process of electroplating, the metal element divalent chromium is often produced. After this element is fused into water, its water causes serious changes in the pH value of the wastewater. The use of activated carbon can effectively treat the chromium. Reasonable adsorption of a metal element is because the activated carbon itself has more micropores and a larger surface area, which can absorb chromium in wastewater by virtue of its strong physical adsorption capacity.
However, previous studies have shown that activated carbon has a poor adsorption effect on heavy metals that exist as anions. carbon pellets manufacturer For this type of adsorbate that exists as anions, the surface of activated carbon needs to be modified, such as using the huge specific surface area of activated carbon to load iron or Other normal-valent metals, through the chemical adsorption of Cr.
To achieve the purpose of removing trace Cr in water. The modified activated carbon can be used to treat Cr in electroplating wastewater, and the adsorbed water can meet the discharge standard. The results show that activated carbon fiber has good adsorption performance for three heavy metal ions in water, and the adsorbent after adsorption is easy to regenerate and can be reused. It is an excellent adsorbent for removing ionic heavy metals in water.
2. Absorption of organic matter in water
Activated carbon has good adsorption capacity for organic pollutants in water. Such as phenolic compounds, benzene compounds, petroleum and petroleum products, etc., have strong adsorption capacity, and it has strong adsorption capacity for organic pollutants that are difficult to remove by biological and other chemical methods, such as herbicides, insecticides, pesticides, such as odor, Methylene blue surface active substances, synthetic dyes, amine compounds, synthetic detergents and many synthetic organic compounds have good removal effects.
The adsorption effect is good, and there is no by-product generation, which overcomes the weakness that biological and chemical methods may produce more toxic by-products. Therefore, activated carbon is generally filtered as a post-treatment.
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What are the applications of activated carbon in water treatment
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