Repairing agent for treating alkaline cadmium-contaminated soil and preparation method thereof
A technology of cadmium-contaminated soil and remediation agent, applied in the direction of soil conditioning materials, chemical instruments and methods, applications, etc., can solve the problems of unstable source of raw materials, complex composition of raw materials, high cost, etc., and achieve low repair cost and controllable quality The effect of strong stability and high quality stability
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Examples
Embodiment 1
[0034] Embodiment 1: a kind of remediation agent that is used to control alkaline cadmium polluted soil, it is made of following 5 kinds of raw materials of weight percent:
[0035]
[0036]
[0037] A repairing agent for controlling alkaline cadmium-contaminated soil, the preparation method of which is:
[0038] (1) Prepare the premix: send the four raw materials of blast furnace slag, sepiolite, bentonite and desulfurized gypsum into the dry powder mixer through the extractor in proportion, and stir for 15 minutes to obtain the premix;
[0039] (2) Mixing of the finished product: add fulvic acid in proportion to the premix, and stir for 5 minutes to obtain the finished product - a repairing agent for treating alkaline cadmium-contaminated soil.
Embodiment 2- Embodiment 7
[0040] Embodiment 2-embodiment 7: a kind of repairing agent that is used to control alkaline cadmium polluted soil, it is made of following 5 kinds of raw materials of weight percent, and the raw material composition and content of each example are as follows:
[0041] Example
2
3
4
5
6
7
30％
50％
40％
40％
40％
45％
meerschaum
30％
20％
20％
30％
25％
20％
20％
10％
20％
15％
17％
20％
Desulfurization gypsum
18％
12％
15％
10％
13％
10％
2％
8％
5％
5％
5％
5％
[0042] Its preparation steps are identical with embodiment 1.
[0043] The comprehensive technical indicators of the powdery restorative agent obtained in Examples 1-7 were tested, and the results are shown in Table 1.
[0044] The comprehensive technical index of the restorative agent that table 1 embodiment 1-7 makes
[0045]
[0046] Note: effe...
Embodiment 8
[0047] Example 8: Pilot test of cadmium-contaminated cultivated land restoration in Baiyin City, Gansu Province (planting corn)
[0048] From May 2017 to September 2017, a field test of restoration agent application was carried out in Luojiatan Village, Wangxian Town, Baiyin District, Baiyin City, Gansu Province. The total cadmium in the test soil is 65.2mg / kg, the available cadmium is 19.6mg / kg, pH: 8.23 (the test method for soil pH is NY / T 1121.2-2006, the same below). The corn variety planted was Jinsui No. 1.
[0049] A. Test treatment
[0050] In the field experiment, 2 treatments were set up, and each treatment was repeated 3 times. Each field had an area of 2 mu, and a 2.5-meter-wide protective row was set up around the test field.
[0051] Treatment 1: blank (CK), conventional fertilization, without any conditioner;
[0052] Treatment 2: conventional fertilization + 200 kg / mu of restoration agent prepared in Example 1.
[0053] B. Application method
[0054] O...
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Abstract
Description
Claims
Application Information
- IPC
- C09K17/40; C09K101/00; C09K109/00
- CPC
- C09K17/40; C09K2101/00; C09K2109/00
- Inventors
- 唐守寅; 袁海伟