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A multi-group material countercurrent adsorption and desorption device and method for enriching high-arsenic waste liquid
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A technology of adsorption and desorption, waste liquid, applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as insufficient treatment of arsenic-containing waste liquid
Active Publication Date: 2019-10-08
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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However, there are still deficiencies in the treatment of arsenic-containing waste liquids with different concentrations.
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Embodiment 1
[0088] like Figure 1~3 As shown, the present invention provides a multi-group material countercurrent adsorption and desorption device for enriching high-arsenic waste liquid, including an interconnected pretreatment separation system, concentration separation system, regeneration activation system and purification liquid treatment system;
[0089] The pretreatment separation system comprises a regulating tank 1, a first pipeline mixing reactor 2 and a first reactor 3 connected in sequence;
[0090] The inlet of the adjustment tank 1 is connected to the arsenic-containing waste liquid tank through the first pump 16; the outlet of the adjustment tank 1 is connected to the inlet of the first pipeline mixing reactor 2 through the second pump 17;
[0091] The first reaction kettle 3 comprises a kettle cover, a kettle body, and a kettle bottom from top to bottom; the kettle cover is provided with a purification liquid outlet 031; the bottom side of the kettle body is provided with a...
Embodiment 2
[0115] A multi-group material countercurrent adsorption and desorption method for enriching high-arsenic waste liquid, specifically comprising the following steps:
[0116] Step 1: Preparation of silicon / iron nanoparticles:
[0117] S1: Weigh 10.8g FeCl 3 ·6H 2 O and 3.98g ferrous chloride FeCl 2 4H 2 O was respectively dissolved in 100ml, 0.5mol / L hydrochloric acid solution, mixed, heated to 75°C in a water bath, condensed and refluxed under argon atmosphere and stirred for 1 hour to obtain a mixed solution of iron;
[0118] S2: Slowly add 5% to 10% aqueous ammonia solution dropwise to the S1 solution, and continue to stir for 5 hours until a black precipitate appears, then separate by magnetic attraction, wash with water, and dry to obtain Fe 3 o 4 Nanoparticles.
[0119] S3: 5.6 g Fe 3 o 4 Add 400ml of ethanol and 100ml of aqueous solution to the nanoparticles, disperse them in a three-necked flask, control the temperature at 80°C, condense and reflux and stir, and ...
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Abstract
The invention provides a multi-group material countercurrent adsorption and desorption device and method for enriching high-arsenic waste liquor. According to the device, 1) a pretreatment separatingsystem comprises an adjusting tank, a first pipe mixing reactor and a first reactor; 2) a concentration separating system comprises a second reactor; 3) a regeneration and activating system comprisesa second magnetic separation reactor, a regeneration reactor, a suspension liquid storage tank, a dispersion reactor and a leacheate storage tank; and 4) a purified liquid treatment system comprises afirst purified liquid storage tank, a second pipe mixing reactor and a first magnetic separator. According to the device, through pretreatment and three-stage countercurrent adsorption and desorption, enrichment and concentration of high-concentration arsenic-containing waste liquor are enhanced under the auxiliary driving force such as an electric field and centrifuging. By the device and method, oriented migration and concentration of arsenic in the arsenic-containing waste liquor can be realized, the generated low-concentration arsenic-containing waste liquor is subjected to follow-up treatment favorably, and the obtained high-concentration and high-purity arsenic-containing waste liquor is subjected to resourceful treatment favorably.
Description
technical field [0001] The present invention relates to the technical field of heavy metal wastewater treatment, in particular, to a multi-group material countercurrent adsorption and desorption device and method for enriching high-arsenic waste liquid, especially to a method for treating calcium arsenate slag waste liquid, arsenic-alkali A device and method for further multi-stage countercurrent concentration absorption and desorption of slag waste liquid and arsenic sulfide slag leaching liquid using multi-group materials. Background technique [0002] Arsenic-containing waste liquid and smelting waste acid are very common process waste liquids in the smelting of copper, gold and other non-ferrous metals and the production and processing of arsenic-containing compounds. waste. For example, antimony, lead-zinc smelting and other industries produce a large amount of hazardous waste liquid containing arsenic, such as arsenic-alkali waste liquid, polluted acid waste liquid, e...
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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/12
Inventor 陈润华王平凌定勋肖疆骏田菲杨洋姜晓仪王稳稳
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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