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Removal of organic solvents from aqueous process streams

一种有机溶剂、水处理的技术，应用在冶金废水处理、被污染的地下水/沥滤液处理、液体分离等方向，能够解决磨损、无烟煤颗粒易于受损等问题，达到高通量的效果

Active Publication Date: 2018-11-09
METSO OUTOTEC (FINLAND) OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During cleaning, anthracite is subject to mechanical abrasion and anthracite particles are susceptible to damage

Method used

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  • Removal of organic solvents from aqueous process streams
  • Removal of organic solvents from aqueous process streams
  • Removal of organic solvents from aqueous process streams

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0042] The filter media shown are packaged as columns. The thickness of the filter medium is the same in each case. Contains organic solvents, CuSO 4 and H 2 SO 4 The flux rate of the aqueous electrolyte flow through the cross-sectional area of ​​the filter is 19.6m / h. The incoming concentration of organic solvent was varied as indicated. figure 2 Shown are the results of testing the separation efficiency of organics through the column.

[0043] The glass particle filter media tested were:

[0044] (1) Glass beads (Silibeads) 0.5-0.75mm

[0045] (2) Glass beads 0.4-0.6mm

[0046] (3) Glass beads 0.25-1.0mm

[0047] (4)Cerablast 0.4mm

[0048] The reference particles tested were:

[0049] (5) Mullite 60 particles 0.5mm

[0050] (6) Stainless steel ball 0.5mm

[0051] (7) Anthracite 0.9mm

example 2

[0053] The above tests were repeated at two different flux rates to demonstrate that the increased flux did not compromise the separation efficiency of the glass particles. image 3 The results of this test are shown.

[0054] The glass particle filter media and flux rates tested were:

[0055] (2) Glass beads 0.4-0.6mm 19.6m / h

[0056] (2b) Glass beads 0.4-0.6mm 37.0m / h

[0057] (4)Cerablast 0.4mm 19.6m / h

[0058] (4b) Cerablast 0.4mm 37.0m / h

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Abstract

Provided herein is a method for separating organic solvent(s) from an aqueous process stream comprising organic solvent(s), comprising passing said aqueous stream comprising organic solvent(s) througha granular bed comprising glass granules, wherein at least 90% of said glass granules have a maximum particle diameter smaller than 1.0 mm.

Description

technical field [0001] The present invention relates to the removal of organic solvents from aqueous treatment streams comprising organic solvents, and more particularly to the use of glass particles to separate organic solvents from aqueous treatment streams comprising organic solvents. Background technique [0002] Removal of organic solvents from aqueous process streams containing organic solvents is particularly desirable when recovering metals by leaching, where the electrolyte solution obtained by leaching metal-bearing raw materials such as ores and concentrates is Deposits are decontaminated before other processing stages. [0003] Typically, organic solvent removal is achieved by passing the organic solvent-containing aqueous treatment stream through a filter comprising anthracite particles. On contact with the anthracite particles in the filter, the organics form small droplets in the liquid, which combine to form larger droplets. At a particular droplet size, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/04B01D39/06B01D24/00C02F1/40C22B3/22B01D29/00C02F103/06
CPCB01D17/04B01D39/06C02F1/40C02F2103/16B01D2239/1241B01D24/105B01D17/10B01D17/045C25C1/00Y02P10/20C22B3/26C22B3/04
Inventor M·括萨A·卡基嫩L·坦图T·约希埃嫩B·埃克贝格
Owner METSO OUTOTEC (FINLAND) OY