A decolorization method for catalytic ozone treatment of cellulose ethanol wastewater biochemical effluent

A technology of cellulose ethanol and biochemical water effluent, applied in chemical instruments and methods, oxidized water/sewage treatment, aerobic and anaerobic process treatment, etc., can solve problems such as low catalytic efficiency, complicated process control, unsuitable for decolorization treatment, etc. , achieve the effects of low operating cost, shortened reaction time, and improved ozone utilization efficiency

Active Publication Date: 2021-03-05
FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102399043A discloses a method for biological decolorization of papermaking wastewater. In this method, activated carbon is used as a carrier for decolorizing microorganisms, and white rot bacteria and Rhodopseudomonas are added to a special air-lift biochar loop reactor for biological decolorization treatment. The process of the method is Control complex and not suitable for poor biochemical wastewater
CN102276084A discloses an industrial wastewater decolorization treatment process, adjusting the pH of the wastewater for resin adsorption, a large amount of chromogenic organic matter is adsorbed in the resin, when the chromaticity removal rate is less than 60%, it is drained, and a liquid-phase oxidant is added to the adsorption resin for oxidative decolorization. At the same time, the recycled resin is activated. Although this method can remove polar and non-polar organic matter, it mainly removes soluble chromatic organic matter in water, and is not suitable for wastewater decolorization treatment with complex water components.
The ozone catalyst in the form of a fixed bed can only use some catalytic active sites on its surface, and its catalytic efficiency is lower than that of a homogeneous ozone catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take by weighing 100g of cellulose ethanol fermentation residue, press filter and rinse with water for 5 times to remove organic acids and inorganic salts of the residue, and then soak in a solution containing 3% chitosan, 0.8% glutaraldehyde and dodecylbenzene Sodium sulfonate 0.2% mixed aqueous solution was immersed for 6 hours under the condition of ultrasonic power of 0.5W / ml and ultrasonic working frequency of 80kHZ, then placed in a carbonization furnace, heated to 200°C for 20 minutes under air condition, and obtained solid mixture. The mixture was impregnated in 0.15% Pd(NO 3 ) 2 After 48 h in the solution, NaOH was added to adjust the pH to 11. The sample of the colloidal salt solution was put into the carbonization furnace, and the temperature was raised to 600 °C under the ammonia atmosphere, and the carbonization was carried out for 240 min. Then, water vapor was introduced and the temperature was raised to 750 °C at a heating rate of 15 °C / min, and activ...

Embodiment 2

[0039] Weigh 100g of cellulose ethanol fermentation residue, press filter and rinse with water for 5 times to remove the organic acid and inorganic salts of the residue, and soak it in a solution containing 5% chitosan, 6% glutaraldehyde and dodecylbenzene In a mixed solution of 2% sodium sulfonate, the ultrasonic power is 15W / ml, and the ultrasonic working frequency is 25kHZ. After immersion for 2 hours, put it in a carbonization furnace, and heat it to 150°C for 60 minutes under air conditions to obtain a solid mixture. The mixture was soaked in 10.6% PdCl 2 After 24 h in the solution, NaOH was added to adjust the pH to 12. The sample of the colloidal salt solution was put into the carbonization furnace, and the temperature was raised to 800 °C under the ammonia atmosphere, and the carbonization was carried out for 60 min. Then pass into CO 2 Continue to heat up to 950°C at a heating rate of 20°C / min, activate for 10 min, and CO 2 The space velocity is 0.5 L / min. After ...

Embodiment 3

[0042] Take by weighing 100g of cellulose ethanol fermentation residue, press filter and rinse with water for 5 times to remove organic acids and inorganic salts of the residue, and then soak in a solution containing 3% chitosan, 0.8% glutaraldehyde and dodecylbenzene Sodium sulfonate 0.2% mixed aqueous solution was immersed for 6 hours under the condition of ultrasonic power of 0.5W / ml and ultrasonic working frequency of 80kHZ, then placed in a carbonization furnace, heated to 200°C for 20 minutes under air condition, and obtained solid mixture. The mixture was impregnated in 0.15% Pd(NO 3 ) 2 After 48 h in the solution, NaOH was added to adjust the pH to 11. The sample of the colloidal salt solution was put into a carbonization furnace, and the temperature was raised to 600 °C under a nitrogen atmosphere for 240 min of carbonization. Then, water vapor was introduced and the temperature was raised to 750 °C at a heating rate of 15 °C / min, and activated for 30 min, with a s...

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Abstract

The invention discloses a decolorization method for catalyzing ozone to treat biochemical effluent of cellulose ethanol wastewater, which includes the following contents: (1) The cellulose ethanol wastewater is treated by a conventional anaerobic-aerobic process; (2) is treated in step (1) Add activated carbon-supported palladium catalyst to the final biochemical effluent, and stir to form an adsorption decolorization mixed solution; (3) Introduce ozone into the mixed solution treated in step (2) to oxidize and decompose the chroma in the water; (4) Add to step (2) 3) Add polyacrylamide to the treated wastewater, stir it, let it stand, and filter it. The method can utilize the waste generated in the production process of cellulose ethanol to achieve the purpose of treating waste with waste.

Description

technical field [0001] The invention relates to a decolorization method for treating biochemical effluent by catalytic ozone method, which is suitable for the treatment of waste water produced by fermenting cellulose from various sources to prepare ethanol. Background technique [0002] With the rapid development of the fuel ethanol industry, the global food security problems caused by the first generation of fuel ethanol using food crops as raw materials have become increasingly prominent. Under such circumstances, international energy giants have restarted the development of second-generation biofuel technology that uses lignocellulosic plants such as agricultural and forestry waste as raw materials, hoping to replace the first-generation fuel ethanol and greatly alleviate the threat of fuel ethanol to food security. . [0003] The cellulose-to-ethanol technology using straw and other agricultural and forestry wastes as raw materials is in line with my country's green, lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14B01J23/44C02F103/36
CPCB01J23/44C02F1/283C02F1/725C02F1/78C02F3/30C02F9/00C02F2103/36
Inventor 张蕾郭宏山李宝忠陈天佐
Owner FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP
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