Repairing agent for repairing lead, arsenic and cadmium combined polluted soil and repairing method thereof
A technology for compound pollution and soil remediation, applied in the field of soil pollution remediation, can solve the problems of difficulty in remediation and dissolution of heavy metal contaminated soil, and achieve the effects of resource utilization, environmental risk reduction, and strong practicability.
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Embodiment 1
[0036] This embodiment is a repairing agent for repairing lead, arsenic and cadmium composite polluted soil and its repairing method
[0037] The restoration agent includes a first composition and a second composition; wherein the first composition includes red mud, calcium dihydrogen phosphate and sodium fluorophosphate; the second composition includes ferric sulfate and calcium chloride.
[0038] A remediation agent for lead, arsenic, and cadmium composite polluted soil, the addition of its raw material components relative to the soil is 2.55g / kg red mud, 1.5g / kg calcium dihydrogen phosphate, 0.15g / kg sodium fluorophosphate, 5.3 g / kg ferric sulfate, 0.5g / kg calcium chloride.
[0039] Take the soil for testing and pass it through a 20-mesh sieve after being air-dried naturally, and then pass through a 20-mesh sieve. Take two parts of 200g contaminated soil, and add the first composition (0.51g red mud, 0.3g calcium dihydrogen phosphate and 0.03g sodium fluorophosphate) to one p...
Embodiment 2
[0043] This embodiment is a repairing agent for repairing lead, arsenic and cadmium composite polluted soil and its repairing method
[0044] The restoration agent includes a first composition and a second composition; wherein the first composition includes red mud, calcium dihydrogen phosphate and sodium fluorophosphate; the second composition includes ferric sulfate and calcium chloride.
[0045] A remediation agent for lead, arsenic, and cadmium composite polluted soil, its raw material components are added in an amount of 1g / kg red mud, 0.05g / kg calcium dihydrogen phosphate, 0.86g / kg sodium fluorophosphate, and 3.2g / kg ferric sulfate, 0.05g / kg calcium chloride.
[0046] Take the soil for testing and pass it through a 20-mesh sieve after being air-dried naturally, and then pass through a 20-mesh sieve. Take two parts of 200g contaminated soil, and add the first composition (0.2g red mud, 0.01g calcium dihydrogen phosphate and 0.172g sodium fluorophosphate) to one part, Mi...
Embodiment 3
[0050] This embodiment is a repairing agent for repairing lead, arsenic and cadmium composite polluted soil and its repairing method
[0051] The restoration agent includes a first composition and a second composition; wherein the first composition includes red mud, calcium dihydrogen phosphate and sodium fluorophosphate; the second composition includes ferric sulfate and calcium chloride.
[0052] A remediation agent for lead, arsenic, and cadmium composite polluted soil, the addition of its raw material components relative to the soil mass is 50g / kg red mud, 10g / kg calcium dihydrogen phosphate, 1g / kg sodium fluorophosphate, 1g / kg Iron sulfate, 1g / kg calcium chloride.
[0053] Take the soil to be tested, air-dry it naturally, grind it, pass it through a 20-mesh sieve, take two parts of 200g contaminated soil, add the first composition (10g red mud, 2g calcium dihydrogen phosphate and 0.2g sodium fluorophosphate) to one part, and turn it over Mix well, add 30% deionized water...
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