A device and method for using hydrogen sulfide micro-nano bubbles to strengthen the vulcanization of heavy metals in polluted acid
A micro-nano bubble, hydrogen sulfide technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. The effect of vulcanization and removal, improving vulcanization efficiency and prolonging residence time
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Embodiment 1
[0029] Such as figure 1 As shown, a device using hydrogen sulfide micro-nano bubbles to strengthen polluted acid and heavy metal vulcanization, the device includes a high-speed dissolved air pump 1, a gas-liquid injection pipe 2 with a high-efficiency gas-liquid dispersing element, and the inlet end of the high-speed dissolved air pump 1 is connected to The outlet end of the dirty acid vulcanization reactor 3 and the hydrogen sulfide gas supply pipeline 4 is connected to the gas-liquid injection pipe 2 through a circulation pipeline, and the injection port of the gas-liquid injection pipe 2 is placed in the dirty acid vulcanization reactor 3 . The top of the dirty acid vulcanization reactor 3 is provided with an air chamber 31, which is connected to the hydrogen sulfide gas supply pipeline 4 through an exhaust pipe, and then introduced into the high-speed dissolved air pump 1 after being connected in parallel.
[0030] The gas-liquid injection pipe 2 with high-efficiency gas-l...
Embodiment 2
[0033] This embodiment adopts an upper part as a cylinder and a conical stainless steel tank as the dirty acid vulcanization reactor 3 at the bottom. The structure of the reaction device involved is the same as that in Embodiment 1, wherein the diameter of the throat of the Venturi injector 22 of the short diffuser tube type is 2mm, the length of the throat is 1 times its diameter; the diffusion angle of the diffuser is 5 degrees, the length is twice the length of the throat, and the liquid velocity at the throat of the throat is 25m / s. The diameter of the holes on the helical sheet is 0.1mm, the opening ratio is 10%, the width of the helical sheet 21 is 0.8d, and the length is 2d, where d is the inner diameter of the diffusion tube.
[0034] The treatment capacity of dirty acid is 2m 3, The polluted acid contains heavy metals such as arsenic and copper, among which the concentration of arsenic is 5000mg / L, the concentration of copper is 500mg / L, and the concentration of hydro...
Embodiment 3
[0036] This embodiment adopts an upper part as a cylinder and a conical stainless steel tank as the dirty acid vulcanization reactor 3 at the bottom. The structure of the reaction device involved is the same as that in Embodiment 1, wherein the diameter of the throat of the Venturi injector 22 of the short diffuser tube type is 20mm, the length of the throat is three times its diameter; the diffusion angle of the diffuser is 8 degrees, the length is three times the length of the throat, and the liquid velocity at the throat of the throat is 40m / s. The hole diameter of the hole on the spiral piece is: 0.2mm, and the hole ratio is 30%. The spiral piece 21 has a width of 0.9d and a length of 3d, where d is the inner diameter of the diffuser.
[0037] The treatment capacity of dirty acid is 2m 3 , The polluted acid contains heavy metals such as arsenic and copper, among which the concentration of arsenic is 5000mg / L, the concentration of copper is 500mg / L, and the concentration o...
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Abstract
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