Adsorbing powder for heavy metals in soil and production method thereof

Abstract

The invention particularly relates to adsorbing powder for heavy metals in soil. The adsorbing powder for the heavy metals in the soil is prepared from fish protein peptide and algae paste through a complexing reaction, wherein the fish protein peptide is embedded in macromolecules of the algae paste, and carries negative charges; after the algae paste absorbs water and expands to be a porous structure, heavy metal ions enter pores under the attraction of the negative charges to form water-insoluble organic macromolecules which are embedded by macromolecules of the algae paste; the weight ratio of the fish protein peptide to the algae paste is 1 to (1.5 to 4). A production method adopts zymolytic fish protein peptide and algae paste to carry out complexing reaction to obtain the adsorbingpowder. The adsorbing powder and the production method have the beneficial effects that when the adsorbing powder is used for treating the soil, the contents of inorganic arsenic and inorganic mercuryin the soil can be reduced by 50% or above, the contents of inorganic cadmium, inorganic lead and inorganic chromium are also respectively reduced by 3% to 5%, and compared with other materials suchas pig manure charcoal, attapulgite, biological straw charcoal, the adsorbing powder has obvious advantages in the aspects of capability of adsorbing the heavy metal and use cost.

Description

technical field [0001] In particular, the present invention relates to a soil heavy metal adsorption powder, and further provides a production method of the adsorption powder. Background technique [0002] Heavy metals are elements that are harmful to the human body. They mostly exist in a compound state in nature. Excessive heavy metals will cause soil pollution, and they will be absorbed by crops and passed on to humans, causing chronic poisoning. [0003] At present, there are mainly the following treatment methods for soil polluted by heavy metals: 1. Engineering treatment methods such as eradicating the topsoil or adding polluted new soil to the polluted land; 2. Biological treatment methods, such as earthworms or crops absorbing soil; 3. Chemical Governance methods; four, bio-agricultural governance methods. The above treatment methods are only suitable for small-area improvement. For the improvement of large-area contaminated soil, the investment of fir tree restorat...

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Problems solved by technology

The above treatment methods are only suitable for small-scale improvement. For the improvement of large-area contaminated soil, the investment of fir tree restoration method is large, the cycle is long, the investment of manpower and material resources is large, and there is a risk of repeated pollution, so it is difficult to implement on a large scale.

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