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System and method for simultaneously treating organic-containing wastewater and organic-containing waste gas

A technology of simultaneous treatment of organic wastewater, applied in the field of waste gas systems, can solve the problems of high energy consumption, high cost, and obstacles to the popularization and application of treatment technology, and achieve the effects of reducing investment, saving cost, and saving consumption

Active Publication Date: 2020-09-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] It is also noticed that in a chemical industry park, there are usually wastewater treatment devices containing organic matter and waste gas treatment devices containing organic matter. At present, their respective energy consumption is relatively high, and the cost remains high, which also hinders the popularization and application of related processing technologies.

Method used

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  • System and method for simultaneously treating organic-containing wastewater and organic-containing waste gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the waste water adsorption / desorption device 1, the condensed and concentrated organic waste water collection device 2 and the exhaust gas washing device 3 are connected in sequence. A carbon adsorbent is installed in the wastewater adsorption / desorption device 1 with a porosity of 50%. Pass the wastewater containing organic matter (4ppm gasoline) from the top of the wastewater adsorption / desorption device 1, the adsorption temperature is 20°C, after passing through the adsorbent layer inside, the organic matter is adsorbed on the adsorbent, and the wastewater discharged up to the standard is discharged from the wastewater The bottom of the adsorption / desorption unit 1 is discharged.

[0029] After the adsorption layer of waste water adsorption / desorption device 1 reaches saturation, stop passing into the waste water that contains organic matter from its top, change and pass into the air that contains organic matter (hexanaphthene of 50ppm) f...

Embodiment 2

[0033] Such as figure 1 As shown, the waste water adsorption / desorption device 1, the condensed and concentrated organic waste water collection device 2 and the exhaust gas washing device 3 are connected in sequence. Molecular sieve and carbon adsorbent (mass ratio 1:1) are installed in the wastewater adsorption / desorption device 1, and the porosity is 35%. Pass the wastewater containing organic matter (2000ppm diethyl phthalate) from the top of the wastewater adsorption / desorption device 1, after passing through the adsorbent layer inside, the adsorption temperature is 15°C, and the organic matter is adsorbed on the adsorbent, The wastewater discharged up to the standard is discharged from the bottom of the wastewater adsorption / desorption device 1 .

[0034] After the adsorption layer of the waste water adsorption / desorption device 1 reaches saturation, stop feeding waste water containing organic matter from its top, and instead pass into hydrogen containing organic matter ...

Embodiment 3

[0038] Such as figure 1 As shown, the waste water adsorption / desorption device 1, the condensed and concentrated organic waste water collection device 2 and the exhaust gas washing device 3 are connected in sequence. An alumina adsorbent is installed in the wastewater adsorption / desorption device 1 with a porosity of 40%. Pass the wastewater containing organic matter (200ppm phenol) through the top of the wastewater adsorption / desorption device 1, the adsorption temperature is 25°C, after passing through the adsorbent layer inside, the organic matter is adsorbed on the adsorbent, and the wastewater discharged up to the standard is discharged from the wastewater The bottom of the adsorption / desorption unit 1 is discharged.

[0039] After the adsorption layer of the wastewater adsorption / desorption device 1 reaches saturation, stop feeding the wastewater containing organic matter from its top, and instead pass into CO containing organic matter (80ppm benzene and 60ppm chlorofor...

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Abstract

The invention discloses a system and a method for simultaneously treating wastewater containing organic matters and exhaust gas containing organic matters. The system mainly comprises a wastewater adsorption / desorption device, an exhaust gas elution device and a concentrated organic wastewater collection device. The method for simultaneously treating wastewater containing organic matters and the exhaust gas containing organic matters comprises the following steps: the wastewater containing organic matters goes through the adsorption device, and is discharged after reaching standards, and a part of the discharged wastewater is used as a water source for the exhaust gas elution device; when adsorption is saturated, the adsorption is switched to desorption operation, and the exhaust gas containing organic matters is used as purge gas, and heats the desorption device; and the gas containing a small amount of organic matters, obtained after desorption and condensation, enters the exhaust gas elution device, is eluted, and then is discharged after reaching standards. The wastewater treated with the system is used as the main elution water, and the exhaust gas treated with the system is used as the purge gas, so the system and the method have the advantages of simple device, large operating flexibility and low cost.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and environmental protection, and specifically relates to a system and method for simultaneously treating waste water containing organic matter and waste gas containing organic matter. Background technique [0002] The complex chemical production process often produces a large amount of wastewater containing organic matter, which accounts for almost 50% of all human production and domestic wastewater. Methods for treating wastewater containing organic matter usually include steam stripping, rectification, oxidation, biochemistry and absorption, etc. Among them, the adsorption method commonly uses various porous materials to treat low-concentration organic wastewater, which can reduce energy consumption compared with the rectification method, and has a wider application range and a smaller footprint than the biochemical method. If the activated carbon material is used in the adsorption m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28B01D53/00B01D53/18C02F101/30
CPCB01D53/002B01D53/1487B01D53/18C02F1/28C02F2101/30C02F2303/16
Inventor 骞伟中尹泽芳多尼陈航
Owner TSINGHUA UNIV