Preparation method for high-concentration compound organic pollution restoration agent
An organic pollution and composite technology, which is applied in the restoration of polluted soil, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve problems such as the reduction of organic pollutant capacity, achieve excellent adsorption performance, and the preparation method is simple and economical. , Reliable adsorption effect
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Embodiment 1
[0027] A preparation method of a high-concentration composite organic pollution remediation agent, comprising the following steps:
[0028] a. Preparation of sodium bentonite
[0029] Add natural bentonite to excess sodium chloride solution, stir magnetically at room temperature for 12 hours, and centrifuge the solid and liquid, then rinse the bentonite with deionized water equal in volume to the sodium chloride solution for 3 consecutive times;
[0030] b. Optimization of sodium bentonite
[0031] Adding deionized water equal to the volume of the sodium chloride solution in step a to the sodium bentonite obtained in step a, separating and removing bentonite with a particle size > 2 μm by wet sedimentation, centrifuging the upper suspension and removing the supernatant, Obtain sodium bentonite with optimized particle size ≤ 2 μm;
[0032] c. Modification of sodium bentonite
[0033] Add excess tetrabutylammonium bromide solution to the sodium bentonite obtained in step b, s...
Embodiment 2
[0037] A preparation method of a high-concentration composite organic pollution remediation agent, comprising the following steps:
[0038] a. Preparation of sodium bentonite
[0039] Add natural bentonite to excess sodium chloride solution, stir mechanically at room temperature for 36 hours, centrifuge the solid and liquid, and wash the bentonite with deionized water equal to the volume of sodium chloride solution for 5 consecutive times;
[0040] b. Optimization of sodium bentonite
[0041] Adding deionized water equal to the volume of the sodium chloride solution in step a to the sodium bentonite obtained in step a, separating and removing bentonite with a particle size > 2 μm by wet sedimentation, centrifuging the upper suspension and removing the supernatant, Obtain sodium bentonite with optimized particle size ≤ 2 μm;
[0042] c. Modification of sodium bentonite
[0043] Add excess tetrapentylammonium bromide solution to the sodium bentonite obtained in step b, mechan...
Embodiment 3
[0047]A preparation method of a high-concentration composite organic pollution remediation agent, comprising the following steps:
[0048] a. Preparation of sodium bentonite
[0049] Add natural bentonite to excess sodium chloride solution, mechanically stir at room temperature for at least 24 hours, and after solid-liquid centrifugation, wash bentonite with deionized water equal to the volume of sodium chloride solution, at least 4 times in a row;
[0050] b. Optimization of sodium bentonite
[0051] Adding deionized water equal to the volume of the sodium chloride solution in step a to the sodium bentonite obtained in step a, separating and removing bentonite with a particle size > 2 μm by wet sedimentation, centrifuging the upper suspension and removing the supernatant, Obtain sodium bentonite with optimized particle size ≤ 2 μm;
[0052] c. Modification of sodium bentonite, adding excessive tetrahexyl ammonium bromide solution to the sodium bentonite obtained in step b, ...
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