Method for repairing heavy metal pollution in town domestic refuse compost by dicotyledonous ruderal
A technology for municipal solid waste and heavy metals, which is applied in the field of environmental pollution remediation engineering, can solve problems such as no literature reports in research, and achieve the effects of convenient operation, reduced content, and reduced transportation costs.
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Embodiment 1
[0055] (1) Sorting and sieving the municipal solid waste compost containing heavy metal pollution from the Xiaodian Compost Plant to remove the water in the compost and prepare it as a weed substrate;
[0056] (2) In the compost substrate experimental base of Tianjin Normal University, the soil with weed propagules was inoculated at normal temperature, and the weed vegetation system was established; the soil contained amaranth, purslane, gray vegetable, and Dawanhua , narrow-leaf amaranth and other seeds. The soil of the weed propagule: the ratio of parts by weight of the compost substrate is 1:1000 parts.
[0057] (3) Maintain the moisture of the substrate during the growth of weeds, and uniformly ration water every day to ensure good humidity in the experimental field;
[0058] (4) After the weeds have grown for 60 days, the weeds are cut, and then rinsed with water to remove the soil and dirt adhering to the weeds; then divided into three parts: roots, stems, and leaves, a...
Embodiment 2
[0062] (1) Sorting and sieving the compost of urban domestic waste polluted by heavy metals to remove the water in the compost and prepare it as a weed substrate;
[0063] (2) In the compost matrix experimental base at normal temperature, inoculate the soil with weed propagules to establish the weed vegetation system; the soil contains amaranth, purslane, gray vegetable, syringa, narrow leaf amaranth. The soil of the weed propagule: the weight and number ratio of the compost substrate is 0.5: 1000 parts.
[0064] (3) Keep the moisture in the substrate after the weeds are sown and during the weed growth period, and provide uniform and quantitative water every day to ensure good humidity in the experimental field.
[0065] (4) After the weeds have grown for 90 days, the weeds are cut, and then fully rinsed with tap water to remove the soil and dirt adhering to the plant samples; then divided into three parts: roots, stems and leaves, and then used Rinse with ionized water, dra...
Embodiment 3
[0069] Sorting the heavy metal-polluted urban domestic waste compost, sieving to remove the water in the compost and preparing it as a weed substrate; in the experimental field at room temperature, inoculate the soil with weed propagules on the compost substrate to carry out the weed vegetation system Planting; the soil contains seeds such as amaranth, purslane, gray vegetable, dawanhua, narrow-leaved amaranth. Weed propagule soil: the weight and number ratio of compost substrate is 0.7:1000 parts.
[0070]Maintain the moisture of the substrate after sowing and weed growth, and uniformly ration water every day to ensure good humidity in the experimental field. After the weeds have grown for 90 days, cut the weeds, and then rinse with water to remove the soil and dirt adhering to the weeds; then divide them into three parts: roots, stems, and leaves, rinse with deionized water, and drain the water Finally, put it in an oven and dry it to constant weight; the dried sample is pu...
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