Combined remediation method of compound polluted soil with straw
A technology of combined restoration of contaminated soil, applied in the restoration of contaminated soil, etc., can solve the problems of low restoration efficiency, slow corrosion rate, unsatisfactory effect, etc., and achieve the effect of enhancing restoration effect, reducing distance, and obvious restoration effect
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Embodiment 1
[0030] Example 1: Test of the influence of the amount of plant stalks on the effect of remediation of contaminated soil:
[0031] 1) After the contaminated soil is loosened by a soil ripper, eight parts of the same quality soil are weighed by an electronic scale and put into a petri dish, and the weight of each part of soil is set to 2Kg;
[0032] 2) Crush the plant straw with a crusher, add 0g, 100g, 200g, 300g, 400g, 500g, 600g, and 700g of straw to the eight soil samples, and stir evenly, and then evenly spray various decomposing enzymes, each Live microorganisms make the straw decompose quickly;
[0033] 3) Place the petri dish in an artificial climate box at 25 degrees Celsius, spray a certain amount of distilled water into the petri dish, so that the soil moisture content is always maintained, spray once a day, and spray continuously for a week. After the end, let the soil dry naturally , for the determination and analysis of heavy metal content and pH value;
[0034] ...
Embodiment 2
[0040] Example 2: Influence test of plant straw decay diffusion rate on contaminated soil remediation effect:
[0041] 1) After the contaminated soil is loosened by a soil ripper, four parts of the same quality soil are weighed by an electronic scale and put into a petri dish, and the weight of each part of soil is set to 2Kg;
[0042] 2) The plant straw is crushed by a crusher, and a layer of straw with a layer height of 6mm is laid in the four soil samples, and then various decomposing enzymes and various microorganisms are evenly sprayed, so that the straw can be quickly decomposed;
[0043] 3) Place the petri dish in an artificial climate box at 25 degrees Celsius, spray a certain amount of distilled water into the petri dish, so that the soil moisture is always maintained, spray once a day, and spray the four soil samples continuously for one week, two weeks, Three weeks, four weeks, after the end, the soil is naturally dried, and the heavy metal content and pH value are ...
Embodiment 3
[0051] The joint restoration method of composite polluted soil using straws of the present invention comprises the following steps: S1: crushing plant straws with a crusher; S2: mixing the crushed plant straws with compound fertilizers, the mixing ratio is set to 3: 1; S3: After the polluted soil is loosened by a scarifier, a certain amount of polluted soil samples are taken out to measure the pH value and heavy metal content; S4: The plant straw mixed with fertilizer is evenly sprinkled on the surface of the polluted soil, According to the PH value and the content of heavy metals, select the appropriate surface thickness; S5: mix the plant straw with the polluted soil through the soil scarifier, so that the straw is turned into the inner layer of the soil, and then dig the soil out of the grid-like groove; S6: Sprinkle the straw mixed with fertilizer evenly into the trench, fill up the trench, and then cover the surface of the polluted soil with a layer of straw, the thickness...
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