Device and method for treating volatile carbonyl-containing organic wastewater through photo-enzyme synergistic catalysis

A technology of organic wastewater and synergistic catalysis, applied in chemical instruments and methods, light water/sewage treatment, measuring devices, etc., can solve the problems of unsatisfactory treatment effect, low treatment capacity, long reaction time, etc., and achieve biodegradability and Improvement of environmental friendliness, reduction of indicators, and improvement of treatment effect

CN112607871AActive Publication Date: 2021-04-06XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-04-06

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Abstract

The invention discloses a device and method for treating volatile carbonyl-containing organic wastewater through photo-enzyme synergistic catalysis, and belongs to the technical field of degradation-resistant organic wastewater treatment.The method includes the steps that degradation-resistant volatile carbonyl compounds in the organic wastewater complete decarbonylation reaction under the common catalytic action of visible light and cross-linking enzyme aggregates; wherein the cross-linked enzyme aggregate is specifically magnetic nanoparticles coated with UPO, HPO and FAP biological enzymes. After the wastewater is treated by the method, carbonyl organic matters in the wastewater are removed, the COD and UV254 indexes are reduced, the BOD5 / COD value is increased, the biotoxicity of the wastewater is obviously weakened, and the biodegradability and environmental friendliness of the wastewater are greatly improved. The method is economical, environmentally friendly and easy to implement, the volatile carbonyl organic wastewater can be continuously treated, the cross-linked enzyme aggregate can be repeatedly utilized, the purification efficiency is high, and the method has wide application prospects and market popularization value.
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Description

technical field

[0001] The invention belongs to the technical field of refractory organic wastewater treatment, and in particular relates to a device and a treatment method for photoenzyme synergistic catalytic treatment of volatile carbonyl-containing organic wastewater. Background technique

[0002] With the rapid economic development, urbanization and industrialization, volatile carbonyl organic compounds (carboxylic acids, aldehydes and amides) generated in various industrial fields (such as papermaking, food processing, municipal sludge and paint industries, etc.) Compounds) continue to increase, making water pollution increasingly serious. The contradiction of water resource shortage has been aggravated, and solving the problem of water resource shortage and water pollution has become an imminent but long-term task. In recent years, environmental governance has been attached great importance, which makes many enterprises attach great importance to their own water trea...

Examples

Embodiment 1

[0060] The malodorous wastewater is metered by the first flowmeter 2 through the first delivery pump 1 and sent to the reaction tower 3 from the wastewater inlet A, and the organic grid 4 and the modified fiberboard 5 are successively removed from the malodorous wastewater with a particle size > 8 μm and > 0.1 μm. Suspended particles; the concentration of pollutants in the filtered wastewater is detected by online gas chromatography 6 and the monitoring data is fed back to the master control module 7 in real time. The specific components of volatile carbonyl organic compounds in the malodorous wastewater obtained by online gas chromatography 6 are: Valeric acid: 800ppm, acetamide: 300ppm, acetaldehyde 1500ppm, the master control module 7 passes the waste liquid in the waste water inlet A by adjusting the first flowmeter 2, the first delivery pump 1, the second flowmeter 9 and the second delivery pump 8 The mass ratio of pollutants to cross-linked enzyme aggregates 17 in enzyme ...

Embodiment 2

[0062] The difference from the method in Example 1 is that the specific components containing volatile carbonyl organics in the smelly wastewater are: propionic acid: 580ppm, acetamide: 620ppm, butyraldehyde 900ppm; the mass of volatile carbonyl organics and crosslinking enzyme aggregates The ratio was controlled at 75000:1, and the cross-linked enzyme aggregates 17 were separated by Co 2 o 3 The biocatalyst with UPO, HPO or FAP as the carrier and active component, the load of biological enzyme is 13%; the reaction time of volatile carbonyl organic compounds in the reaction system is 20min, the power of the visible light tube is 100W, the reaction system The temperature is 40°C, and the purification efficiency of volatile carbonyl-containing organic compounds is as high as 98.3%.

Embodiment 3

[0064] The difference with the method of Example 1 is: the specific components containing volatile carbonyl organic compounds in the smelly wastewater are: butyric acid: 580ppm, valeric acid: 460ppm, propionaldehyde: 600ppm; The mass ratio was controlled at 3500:1, and the cross-linked enzyme aggregates 17 were replaced by α-Fe 2 o 3 The biocatalyst with UPO, HPO or FAP as the carrier and active component, the load of biological enzyme is 17%; the reaction time of the volatile carbonyl organic compound in the reaction system is 18min, the power of the visible light tube is 80W, the reaction system The temperature is 35°C, and the purification efficiency of volatile carbonyl-containing organic compounds is as high as 99.2%.