Microemulsion detergent for resource treatment of oil-containing solid waste, and preparation method and application thereof
A solid waste and microemulsion technology, applied in the field of oil-contaminated soil remediation, can solve problems such as waste of oil resources and environmental pollution
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Embodiment 1
[0022] The sample used in this example is oily mud sand with an oil content of 17.00wt.% and a water content of 4.90wt.%. Weigh 20g of oil-containing mud sand, add the same amount of prepared microemulsion lotion of the present invention to process, the prepared fatty alcohol polyoxyethylene ether sodium sulfate solution (70%) 5.71wt.%, butyl lactate 4wt.% , amyl propionate 1wt.%, sodium chloride 0.5wt.%, and the balance is water. After stirring and mixing, the three phases were separated after centrifugation and the residual oil rate of the lower solid phase was measured to be 1.14wt.%.
Embodiment 2
[0024] The sample used in this example is crude oil polluted soil aged for half a year, with an oil content of 26.45wt.% and a moisture content of 5.35wt.%. Weigh 20g of oily sludge, add an equivalent amount of microemulsion lotion of the present invention for processing, prepared fatty alcohol polyoxyethylene ether sodium sulfate solution (70%) 5.71wt.%, butyl lactate 4wt. %, amyl propionate 1wt.%, sodium chloride 0.9wt.%, and the balance is water. After stirring and mixing, the three phases are separated after centrifugation and standing, but the boundary is not obvious, the middle liquid phase is turbid, and the lower layer is measured The residual oil rate of the solid phase was 4.30wt.%.
Embodiment 3
[0026] The sample used in this example is soil polluted by crude oil for three months, with an oil content of 20.01 wt.%, and a water content of 1.53 wt.%. Weigh 20g of oily sludge, add 40g of the prepared microemulsion lotion of the present invention for treatment, prepared fatty alcohol polyoxyethylene ether sodium sulfate solution (70%) 2.86wt.%, butyl lactate 4wt.% , amyl propionate 0.6wt.%, sodium chloride 0.3wt.%, and the balance is water. After stirring and mixing, the three phases were separated after centrifuging and standing still. The residual oil rate of the lower solid phase was measured to be 2.03wt.%, oil phase, liquid phase and solid phase. Recyclable, the middle liquid phase is clear and transparent, then the microemulsion phase can continue to be recycled to process oil sludge, and the solid phase becomes soil with low oil content after dehydration, which is convenient for further processing.
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