Sorting method and device for contaminated soil particles with different particle sizes
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A technology of polluted soil and sorting device, which is applied in the field of soil remediation to achieve the effect of low noise, wide application range and good sorting effect
Active Publication Date: 2016-06-01
SUN YAT SEN UNIV
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[0006] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the existing technology for sorting polluted soil particles with different particle sizes, to provide a pretreatment technology and related equipment for polluted soil leaching treatment, and to provide effective solutions for polluted soil leaching engineering Pretreatment technology and equipment
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Embodiment 1
[0038] The sorting device of embodiment 1 different particle size polluted soil particles
[0039]A sorting device for polluted soil particles with different particle sizes, including a water spray pipe 1, a trommel screen 2, a mud pool 3, a valve 5, a filter screen 6, a mud pump 7, a frequency converter 8, a pressure gauge 9, and a hydrocyclone Feed port 10, overflow pipe 11, filter screen 13, hydrocyclone 14, sand settling port 15; wherein, the water spray pipe 1 and the trommel 2 are all fixedly installed on the mud pool 3; the mud pump 7 and the mud pool 3 and between the mud pump 7 and the hydrocyclone inlet 10 are all connected by mud pipelines, and the filter screen 6 is arranged in the mud pipeline between the mud pump 7 and the mud pool 3; The overflow pipe 11 is installed on the hydrocyclone 14, and the end of the overflow pipe 11 is equipped with a herringbone pipe 12 (that is, the overflow pipe as a whole is a herringbone pipe, which is more conducive to the redu...
Embodiment 2
[0045] The sorting method of embodiment 2 different particle size polluted soil particles
[0046] Utilize the device of embodiment 1 to carry out sorting, concrete method is as follows:
[0047] First, the polluted soil enters the trommel 2 for coarse screening, and some sandstone and rubble etc. are screened out, and the water nozzle 1 continuously sprays water on the polluted soil with a certain flow rate, and the polluted soil is washed into the mud pool 3, and at the same time The polluted soil on the surface of the sand and gravel is also washed clean, and the washed sand and gravel can be taken out and directly backfilled to the original place.
[0048] Unscrew the control valve 5, power on the mud pump 7, pump the mud in the mud pool (mud temporary storage pool) 3 to the cyclone 14 after being filtered by the filter screen 6, adjust the frequency converter 8 according to the pressure gauge 9, Furthermore, the output power of the mud pump 7 is adjusted so that the fl...
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Abstract
The invention discloses a sorting method and device for contaminated soil particles with different particle sizes. The sorting device comprises a water spraying pipe 1, a drum screen 2, a mud tank 3, a filter screen 6, a mud pump 7, a hydrocyclone feed port 10, an overflow pipe 11, a filter screen 13, a hydrocyclone 14 and a desilting port 15, wherein the water spraying pipe 1 and the drum screen 2 are both fixedly installed on the mud tank 3; the mud pump 7 is connected with the mud tank 3 and the hydrocyclone feed port 10 through mud pipelines correspondingly, and the filter screen 6 is arranged in the mud pipeline between the mud pump 7 and the mud tank 3; the overflow pipe 11 is installed on the hydrocyclone 14, and the filter screen 13 is installed at the end of the overflow pipe 11; the desilting port 15 is formed in the bottom of the hydrocyclone 14. The sorting method and device have the advantages that the technique is simple, the sorting effect is good, the device is suitable for various weather environments, the application range is wide, and subsequent drip washing cost can be reduced; the method and device have extremely good application prospects.
Description
technical field [0001] The invention belongs to the technical field of soil restoration. More specifically, it relates to a sorting method and a sorting device for polluted soil particles with different particle sizes. Background technique [0002] With the development of the economy, the acceleration of urbanization, the adjustment of industrial structure, and the relocation of industrial enterprises have shown a general trend. At the same time, various pollutions of the site soil have been caused, including heavy metal pollution, organic pollution, etc., which seriously threaten human health and The environment is safe, so the remediation and sustainable use of polluted sites has become an urgent problem in the field of environmental remediation. [0003] Soil washing technology is beginning to be widely used in the field of soil remediation because of its ease of engineering and high efficiency. However, studies have found that the pollutant content of soil particles wi...
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Application Information
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