Adsorption treatment method for waste water containing octenyl succinate

An octenyl succinic acid, adsorption treatment technology, applied in the direction of adsorption water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem that the process report of wastewater containing octenyl succinic acid cannot be found, etc. problem, to achieve the effect of high-efficiency adsorption

Active Publication Date: 2013-06-05
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, we were unable to find process reports on the treatment of wastewater containing octenylsuccinic acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Grind 7g of dry barite and pass it through a 80 mesh sieve, then mix it with 100g of 0.2mol / L phosphotungstic acid solution, shake it for 12 hours, then filter it with suction, wash the filter cake, dry it at 130°C for 2 hours, and pass it through a 80 mesh Sieve to become barite adsorbent;

[0021] 2) Add 5g of barite adsorbent to 1000g of wastewater containing 1g / L octenylsuccinic acid, adjust the pH value to 2, and shake at 5°C for 1 hour;

[0022] 3) After filtering, add 0.5g of barite adsorbent to the filtrate, shake at 40°C for 12 hours;

[0023] 4) Filtrate again, and determine that the removal rate of octenylsuccinic acid in the filtrate reaches 99.97%, and the COD value is less than 100mg / L. The filtrate can be recycled or discharged directly;

[0024] 5) Collect the filter cake obtained by filtering twice in 3) and 4), dry at 110°C for 2 hours, and then burn for 0.5 hour to obtain regenerated dry barite.

Embodiment 2

[0026] 1) Grind 10g of dry natural zeolite and pass it through a 140-mesh sieve, then mix it with 300g of 0.01mol / L phosphotungstic acid solution, shake it for 24 hours, then filter it with suction, wash the filter cake, dry it at 110°C for 4 hours, and pass it through a 80-mesh sieve And become a natural zeolite adsorbent;

[0027] 2) Add 1g of natural zeolite adsorbent to 100g of wastewater containing 20g / L octenylsuccinic acid, adjust the pH to 5, and shake at 40°C for 12 hours;

[0028] 3) After filtering, add 0.5g of natural zeolite adsorbent to the filtrate, shake at 40°C for 11 hours;

[0029] 4) Filtrate again, and determine that the removal rate of octenylsuccinic acid in the filtrate reaches 99.93%, and the COD value is less than 100mg / L. The filtrate can be recycled or discharged directly;

[0030] 5) Collect the filter cake obtained by 3) and 4) two times of filtration, dry at 130°C for 4 hours, and then burn for 1 hour to obtain regenerated dry natural zeolite. ...

Embodiment 3

[0032] 1) Grind 8g of dry kaolin and pass it through a 130-mesh sieve, then mix it with 200g of 0.05mol / L phosphotungstic acid solution, shake it for 20 hours and then filter it with suction. The filter cake is washed, dried at 120°C for 3 hours, and passed through a 100-mesh sieve. Become a kaolin adsorbent;

[0033] 2) Add 2g of kaolin adsorbent to 500g of wastewater containing 10g / L octenylsuccinic acid, adjust the pH to 4, and shake at 30°C for 10 hours;

[0034] 3) After filtering, add 2g of kaolin adsorbent to the filtrate, shake at 5°C for 0.5 hours;

[0035] 4) Filtrate again, and determine that the removal rate of octenylsuccinic acid in the filtrate reaches 99.78%, and the COD value is less than 100mg / L. The filtrate can be recycled or discharged directly;

[0036] 5) Collect the filter cake obtained by filtering twice in 3) and 4), dry at 120°C for 3 hours, and then burn for 1 hour to obtain regenerated dry kaolin.

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Abstract

The invention discloses an adsorption treatment method for waste water containing octenyl succinate, which comprises the following steps: grinding a dried ore material, screening, and reacting with a phosphotungstic acid solution to become ore adsorbent; adding the ore adsorbent into waste water containing 1-20 g/L octenyl succinate, regulating the pH value to 2-5, and oscillating at 5-40 DEG C for 1-12 hours; filtering, adding the ore adsorbent into the filtrate, and oscillating at 5-40 DEG C for 0.5-12 hours; further filtering, and determining that the octenyl succinate removal rate of the filtrate is up to 99% or above and the COD (chemical oxygen demand) value is less than 100 mg/L, so that the filtrate can be circularly utilized or directly discharged; and collecting the filter cakes in the previous two steps, drying, and firing to obtain the regenerated dried ore material. The invention has the advantages that the cheap ore material is prepared into the ore adsorbent, waste water containing octenyl succinate can be efficiently subjected to adsorption treatment by using the ore adsorbent, the ore material can be regenerated and recycled, and the requirements for environment protection and energy saving are met.

Description

technical field [0001] The invention relates to industrial wastewater treatment, in particular to an adsorption treatment method for wastewater containing octenyl succinic acid. Background technique [0002] Starch octenyl succinate generally exists in the form of sodium octenyl succinate (Starch Sodium Octenyl Succinates, SSOS), which is a highly safe emulsifying thickener. The Food and Drug Administration (FDA) is included in the category of food additives in the United States, and it is currently the only starch alkenyl succinate product that is allowed to be used as a food additive by the FDA. [0003] Starch octenyl succinate has been approved for use by major countries in the world including China, and its quality index is that when producing food-grade starch octenyl succinate, the maximum allowable treatment amount of octenyl succinic anhydride is 3% , the degree of substitution is not more than 0.02, and the residual amount of octenylsuccinic acid is less than 0.3%...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/10C02F101/34
Inventor 仇丹汤成科彭革方晓娟
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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