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Treatment method and treatment device for isooctyl thioglycolate production wastewater

The technology of isooctyl thioglycolate and isooctyl acetate is applied in the field of treatment method and treatment device of isooctyl thioglycolate production wastewater, which can solve the problems of inorganic salt pollution, difficulty in meeting discharge requirements, and inability to oxidatively degrade organic matter. , to achieve the effect of recycling, low processing cost and prolonging service life

Active Publication Date: 2018-10-30
山东沾化金嘉利化工科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the current treatment method of isooctyl thioglycolate production wastewater, since the organic matter cannot be completely oxidized and degraded, the separated water often contains a certain amount of organic matter, which is difficult to meet the discharge requirements, and the separated solid salt is always doped with a certain amount of organic matter. A large amount of organic matter, resulting in contamination of the separated inorganic salts

Method used

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  • Treatment method and treatment device for isooctyl thioglycolate production wastewater
  • Treatment method and treatment device for isooctyl thioglycolate production wastewater
  • Treatment method and treatment device for isooctyl thioglycolate production wastewater

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Experimental program
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Effect test

Embodiment 1

[0032] (1) Get isooctyl thioglycolate production waste water (NaCl content 17.0wt.%, COD: 15000mg / L, pH value is 0.5) join in the waste water storage tank, add catalytic oxidation auxiliary agent anhydrous cobalt chloride and stir evenly, Co in organic wastewater 2+ The molar concentration is 0.4mmol / L;

[0033] (2) Preheat to 200°C, enter the porous solid catalyst MoO 3 / TiO 2 React with oxygen in the bubbling reactor; control the reaction temperature to 200°C, the reaction pressure to 7.0MPa, the residence time to 15min, and the flow rate of waste water to 66.7ml / min;

[0034] (3) Sampling and analysis at the outlet of the bubbling reactor, then enter the flashing device, cool down, and centrifuge the solid salt NaCl through the desalting filter, return the concentrated solution after centrifugation to the filtering device, then enter the preheating device, and apply it to In the process, the recycling of catalytic oxidation aids is realized.

[0035] After testing, the ...

Embodiment 2

[0037] (1) Take isooctyl thioglycolate production wastewater (NaCl content 17.0wt.%, COD: 15000mg / L, pH value is 5.0) and join in the wastewater storage tank, add catalytic oxidation auxiliary agent anhydrous cobalt chloride and stir evenly, Co in organic wastewater 2+ The molar concentration is 0.3mmol / L;

[0038] (2) Preheat to 150°C, enter the porous solid catalyst MoO 3 / TiO 2 React with oxygen in the bubbling reactor; control the reaction temperature to 150°C, the reaction pressure to 4.0MPa, the residence time to 90min, and the flow rate of waste water to 11.1ml / min;

[0039] (3) Sampling and analysis at the outlet of the bubbling reactor, then enter the flashing device, cool down, and centrifuge the solid salt NaCl through the desalting filter, return the concentrated solution after centrifugation to the filtering device, then enter the preheating device, and apply it to In the process, the recycling of catalytic oxidation aids is realized.

[0040] After testing, t...

Embodiment 3

[0042] (1) Take isooctyl thioglycolate production wastewater (NaCl content 20.0wt.%, COD: 20000mg / L, pH value is 3.0) and join in the wastewater storage tank, add catalytic oxidation auxiliary agent anhydrous cobalt chloride and stir evenly, Co in organic wastewater 2+ The molar concentration is 0.1mmol / L;

[0043] (2) Preheat to 250°C, enter the porous solid catalyst MoO 3 / TiO 2 React with oxygen in the bubbling reactor; control the reaction temperature to 250°C, the reaction pressure to 10.0MPa, the residence time to 10min, and the flow rate of waste water to 100ml / min;

[0044] (3) Sampling and analysis at the outlet of the bubbling reactor, then enter the flashing device, cool down, and centrifuge the solid salt NaCl through the desalting filter, return the concentrated solution after centrifugation to the filtering device, then enter the preheating device, and apply it to In the process, the recycling of catalytic oxidation aids is realized.

[0045] After testing, t...

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Abstract

The invention belongs to the technical field of organic wastewater treatment, and particularly relates to a treatment method and a treatment device for isooctyl thioglycolate production wastewater. The treatment method includes mixing a catalytic oxidation aid with the isooctyl thioglycolate production wastewater in advance, allowing the mixture to enter a bubbling reactor after preheating, subjecting the mixture and an oxidizing agent to oxidizing reaction to convert organic matter in the wastewater into H2O, CO2 and SO4<2->, and desalting reaction liquid through flashing, evaporation and concentration. The treatment method and the treatment device have the advantages that soluble cobalt salt and MoO3 / TiO2 are combined, the synergistic effect is developed sufficiently, and accordingly, the organic matter in the wastewater is oxidized rapidly and deeply to be removed; the COD (chemical oxygen demand) content of the wastewater is reduced greatly, water and solid salt can be separated effectively, and the content of the organic matter in the water and the solid salt is low, so that the water obtained after separation can be recycled, and the solid salt can serve as by-products.

Description

technical field [0001] The invention belongs to the technical field of organic waste water treatment, and in particular relates to a treatment method and a treatment device for waste water produced by isooctyl thioglycolate. Background technique [0002] The sodium hydrosulfide method is widely used to produce isooctyl thioglycolate because of its simple production process and low cost. However, a large amount of organic waste water is often produced during the production process. The content of sodium chloride in these organic waste water is as high as 20% More than %, it also contains organic substances such as thioglycolic acid, isooctyl alcohol, and isooctyl thioglycolate. [0003] Ni Shengliang and others used Fenton reagent to oxidize the wastewater produced by isooctyl thioglycolate, distilled the wastewater first, and then oxidized the distilled water. The COD removal rate was 87.0%. On the one hand, this method has high treatment costs, on the other hand, it does n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F101/30C02F101/20C02F103/36
CPCC02F1/001C02F1/06C02F1/38C02F1/725C02F1/727C02F9/00C02F2101/20C02F2101/30C02F2103/36C02F2201/007C02F2301/08
Inventor 王景华张广俊崔洪友杨明刚刘勤学张远王勇
Owner 山东沾化金嘉利化工科技有限公司
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