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Heavy metal tiny precipitate adsorption device

An adsorption device and sediment technology, which is applied in the field of heavy metal fine sediment adsorption devices, can solve the problems of high cost and insufficient adsorption force, and achieve the effects of low cost, ingenious design and low energy consumption

Active Publication Date: 2019-06-14
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of these adsorption methods is still too high, and the adsorption force is not enough.

Method used

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  • Heavy metal tiny precipitate adsorption device
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The structure diagram of the present invention is as figure 1 As shown, the heavy metal fine sediment adsorption device of the present invention includes two cylinders 1 of the same size, a support 4, a copper sheet 5, a pressing device 6, a low-temperature adsorption pool 7, and a high-temperature desorption pool 8, two of which A cylinder of the same size 1 is made of TiO 2 or SrTiO 3 prepared, the height of the cylinder 1 is smaller than the diameter of the cylinder, one end of the cylinder 1 is a smooth end 2, and the other end of the cylinder 1 is a hole end 3 with nanoholes, and the two cylinders 1 are symmetrically fixed on On the support 4 with low conductivity, the smooth end 2 of the cylinder 1 is opposite to the support 4, and a copper sheet 5 is sandwiched between the smooth end 2 and the support 4, and the copper sheet 5 is connected to two cylinders 1 at the same time, the cylinder 1, the support 4. The copper sheet 5 is fixed with a pressing device 6, s...

Embodiment 2

[0022] In the present embodiment, analyze pure TiO 2 or SrTiO 3 The particle size of the powder is 500nm. After sintering in a muffle furnace at 1400°C for 2 hours, one end was corroded with 1M hydrochloric acid solution for 60 minutes, and then washed with deionized water.

Embodiment 3

[0024] In the present embodiment, analysis pure TiO 2 or SrTiO 3 The particle size of the powder is 300nm. After sintering in a muffle furnace at 1300°C for 1 hour, one end was corroded with 0.6M hydrochloric acid solution for 30 minutes, and then washed with deionized water.

[0025] The use method of the present invention is: put the hole end 3 of one of the cylinders 1 into the low-temperature adsorption pool 7, the hole end 3 is the low-temperature end; the hole end 3 of the other cylinder 1 is put into the high-temperature desorption pool 8 , the first deionized water of the high temperature desorption pool 8 is deionized water, the second desorption is the water after the first desorption, and the hole end 3 is the high temperature end. If the cylinder 1 is an N-type semiconductor, it is used to adsorb heavy metal hydroxides. If the cylinder 1 is a P-type semiconductor, it is used to adsorb heavy metal sulfides. During desorption, the rotating device 9 is used to tran...

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Abstract

The invention relates to a heavy metal tiny precipitate adsorption device, which comprises two cylinders in same size, a support frame, a copper sheet, a pressing device, a low-temperature adsorptionpool and a high-temperature adsorption pool, wherein the two cylinders in the same size are prepared from TiO2 or SrTiO3; the height of the cylinder is smaller than the diameter of the cylinder; one end of the cylinder is a smooth end; the other end of the cylinder is a hole end with a nanometer hole; the two cylinders are symmetrically fixed on the support frame with low electricity conduction; the smooth end of the cylinder is opposite to the support frame; the copper sheet is clamped between the smooth end and the support frame; the cupper sheet is simultaneously connected with the two cylinders; the cylinders, the support frame and the cupper sheet are fixed by the pressing device, so that the cylinders and an electricity conduction material are in ohmic contact; the hole end of one cylinder is put into the low-temperature adsorption pool; the hole end of the other cylinder is put into the high-temperature adsorption pool. The heavy metal tiny precipitate adsorption device has theadvantages that the cost is low; the energy consumption is low; the repeated utilization is realized; the heavy metal tiny precipitate adsorption device is suitable for secondarily treating tiny heavymetal precipitates after precipitate removal by a chemical coprecipitation method.

Description

technical field [0001] The invention is an adsorption device for fine heavy metal sediments, which belongs to the innovative technology of the adsorption device for fine heavy metal sediments. Background technique [0002] With the rapid development of urbanization and industry, environmental pollution is becoming more and more serious, especially heavy metal elements (including zinc (Zn), copper (Cu), nickel (Ni), mercury (Hg), lead (Pb), cadmium ( Cd), chromium (Cr) and arsenic (As)) are discharged into the soil and rivers of the environment in large quantities by mining companies, and finally enter human organs and organisms through the biological chain. Even if a very small amount of heavy metals enters the human body and organisms, it will be harmful to life and pose a threat to biological species. Therefore, a technology is needed to effectively treat the sewage containing these heavy metal elements before being discharged into the environment. [0003] So far, many m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01D15/08C02F101/20C02F101/22
Inventor 何琴玉何俊峰翟旺建王宝来魏凯利南俊民冯寿廷
Owner SOUTH CHINA NORMAL UNIVERSITY