What are the applications of humic acid in the field of environmental protection

1. Wastewater treatment

Biological flocculant:

Humic acid can be used as a biological flocculant to promote the settlement of suspended particles in wastewater, so as to purify water quality. The functional groups in its macromolecular structure can react physically and chemically with suspended particles in wastewater to form large flocculates and accelerate the settlement of particles.

Harmful substances transformation:

Humic acid can also chemically react with harmful substances in wastewater, transforming them into harmless or low-toxic substances. For example, humic acid can form stable chelates with heavy metal ions, reducing their toxicity and bioavailability.

Improve wastewater treatment efficiency:

In the process of wastewater biological treatment, humic acid can be used as a nutrient source for microorganisms to promote the growth and reproduction of microorganisms, thus improving the efficiency of wastewater treatment. At the same time, humic acid can also enhance the activity of microorganisms and improve their ability to degrade organic pollutants.

Second, soil remediation

Heavy metal adsorption:

Humic acid has rich functional groups and high specific surface area, which can effectively adsorb heavy metal ions in soil, reduce their concentration and reduce the harm to the environment. This adsorption not only helps to reduce the migration and transformation of heavy metals in the soil, but also reduces the toxicity of heavy metals to plants and humans.

Improve soil structure:

Humic acid can also improve the physical and chemical properties of soil, such as increasing the soil ventilation, water retention and fertilizer retention, and promoting the formation of soil aggregate structure. All these help to improve soil fertility and ecological functions, and promote plant growth and development.

Promote microbial activity:

Humic acid, as an organic substance, can provide carbon source and energy for microorganisms in soil and promote their reproduction and activity. Microorganisms play an important role in soil remediation, which can degrade organic pollutants and transform heavy metals.

Third, other environmental applications

Air purification:

Humic acid can also be used in the field of air purification, such as as an adsorbent to remove harmful gases and particles from the air. The functional groups in its macromolecular structure can interact with pollutants in the air, adsorb them on the surface and convert them into harmless substances.

Ecological governance:

In terms of ecological governance, humic acid can be used to prevent and control desertification and improve saline-alkali land. By increasing soil organic matter content and improving soil structure, humic acid helps to improve soil resistance to wind erosion and water erosion, and reduce the frequency and intensity of sandstorms. At the same time, it can also promote the salt leaching in the soil and the absorption and utilization of nutrients by plants, and improve the ecological environment of the saline-alkali land.

Humic acid has a wide application prospect in the field of environmental protection. Humic acid plays an important role in wastewater treatment and soil remediation through its biological flocculation, harmful substance conversion, heavy metal adsorption and other properties. At the same time, it can also be used in air purification, ecological governance and other fields to contribute to environmental protection and sustainable development.