Microorganism powder product for treating heavy metal polluted saline-alkali soil and manufacturing method thereof

Abstract

The invention discloses a microorganism powder product for treating heavy metal polluted saline-alkali soil and a manufacturing method thereof. The powder product is composed of 50-70 parts of bacteria-containing corn flour, 15-25 parts of bacteria-containing rice bran powder, 10-20 parts of bacteria-containing peanut cake powder, and 5-10 parts of bacteria-containing soybean cake powder. Bacillus alcalophilus is cultured in the bacteria-containing corn flour with bacterial concentration being 1*10<10>-2*10<10> cfu / g; bacillus subtilis is cultured in the bacteria-containing rice bran powder with bacterial concentration being 5*10<9>-2*10<10> cfu / g; white rot fungi is cultured in the bacteria-containing peanut cake powder with bacterial concentration being 1*10<9>-1*10<10> cfu / g; bacillius firmus is cultured in the bacteria-containing soybean cake powder with bacterial concentration being 5*10<9>-2*10<10> cfu / g. The invention also discloses the manufacturing method of the microorganism powder product. The microorganism powder product is used for heavy metal polluted saline-alkali soil.

Description

technical field [0001] The invention relates to the field of heavy metal prevention and control, in particular to a microbial powder product for treating heavy metal polluted saline-alkali land and a manufacturing method thereof. Background technique [0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive. The current remediation methods mainly include electric remediation methods, chemical leaching methods, and phytoremediation methods. The advantage of these met...

AI Technical Summary

Problems solved by technology

In a similar field, the patent "A Method for Microbial Remediation of Heavy Metal Contaminated Soil" (Application No.: 201110122739.6, Publication Date: 2011-11-16) discloses a method of soil treatment using Rhodobacter sphaericus preparations combined with flooding. The working principle is mainly to use Rhodobacter sphaericus to absorb heavy metals after multiplying in a large amount in a water-rich anaerobic environment, and then infiltrate into the ground through water to reduce the concentration of heavy metals in the soil. However, the soil cannot be used for planting operations during the treatment process, and the economic cost is high. On the other hand, it is not suitable for salinized areas, and heavy metals flowing into groundwater will also cause secondary pollution; 22) A heavy metal-contaminated soil remediation agent using Bacillus subtilis and Candida tropicalis as active ingredients is disclosed. The bioremediation agent of this invention can absorb a certain proportion of heavy metals and can remain in the soil for a period of time, but tropical false Trichotrichum is an anaerobic fungus, which cannot survive for a long time in dry and ventilated soil. On the other hand, because each microorganism has its own limitations, its effect on soil treatment is neither long-lasting nor comprehensive