Dissolved gas and reagent integrated vacuum preloading method
A vacuum pre-pressing method, dissolved gas technology, applied in chemical instruments and methods, dewatering/drying/concentrated sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of reducing permeability coefficient, affecting treatment effect and cost problems such as high cost, to achieve the effect of increasing the permeability coefficient, improving the treatment effect, and increasing the living space
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[0032] Example one
[0033] The dissolved gas-medicament vacuum precompression method of the present invention includes the following steps:
[0034] (1) Take samples of engineering waste slurry on site, and measure and analyze special physical and chemical properties such as moisture content, particle composition, mineral composition, PH value, and specific gravity.
[0035] (2) Determine the addition amount and parameters of the first chemical agent A, the second chemical agent B, the third chemical agent C, and the dissolved gas D according to the analysis result of step (1), the first chemical agent A, the second chemical agent B. The mixing ratio of the third chemical agent C is about 0.01%~0.6%, 0.05%~0.4%, 0.001%~0.1%, the pressure of the dissolved gas D is 0~0.6MPa, and the temperature is 0~60 degrees. For example, the mixing ratios of the first chemical agent A, the second chemical agent B, and the third chemical agent C in the first embodiment are about 0.3%, 0.2%, and 0.0...
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[0049] Example two
[0050] The second embodiment is basically the same as the first embodiment, except that the mixing ratios of the first chemical agent A, the second chemical agent B, and the third chemical agent C are about 0.01%, 0.05%, and 0.001%, respectively.
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[0051] Example three
[0052] The third embodiment is basically the same as the first embodiment, except that the mixing ratios of the first chemical agent A, the second chemical agent B, and the third chemical agent C are about 0.6%, 0.4%, and 0.1%, respectively.
[0053] The above construction process is a conventional procedure for solid-liquid separation of dissolved gas-medicament vacuum preloading method. When dissolved gas is used as the carrier medium, steps 3 and 4 in the specific implementation steps can be combined into: the gas is used according to the determined parameters The first chemical agent A, the second chemical agent B, and the third chemical agent C are injected into the waste slurry. When it is necessary to add dissolved gas during the vacuum pre-compression process, step 4 can be moved to after step 8, and the dissolved gas can be injected continuously or intermittently as needed during the vacuum pre-compression process.
[0054] In the specific implementat...
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