Microwave-assisted catalytic oxidation method for biochemical tail water of brewing wastewater by various metals

A microwave-assisted, catalytic oxidation technology, applied in chemical instruments and methods, water/sewage treatment, food industry wastewater treatment, etc., can solve the problems of high operating cost and single effect, and achieve enhanced treatment efficiency, improved thermal stability and Dispersion and the effect of improving microwave utilization

Active Publication Date: 2017-08-18
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional metal catalysts have extremely strong oxidation ability, but in practical applications, there are problems such as high operating costs and single effect

Method used

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  • Microwave-assisted catalytic oxidation method for biochemical tail water of brewing wastewater by various metals
  • Microwave-assisted catalytic oxidation method for biochemical tail water of brewing wastewater by various metals
  • Microwave-assisted catalytic oxidation method for biochemical tail water of brewing wastewater by various metals

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Advanced treatment method of wastewater from a brewery in Sichuan

[0025] The processing capacity of the embodiment of the present invention is by 1300m 3 / d design, the effluent COD, total phosphorus, ammonia nitrogen, and chromaticity of the wastewater after biochemical treatment did not meet the standards, and the effluent after the final treatment met the discharge standards of the brewing industry. The specific influent and effluent water quality are shown in Table 1.

[0026] Specific process: First, use sulfuric acid to acidify the biochemical tail water of a brewery wastewater treatment station in Sichuan, control the pH value of the wastewater to 3.0, and oxidize the effluent after 15 minutes of acidification, and the oxidant is H 2 o 2 , dosing ratio according to H 2 o 2 The ratio of COD to biochemical tail water is 0.05:1. After reacting for 10 minutes, it enters the microwave reactor for treatment. Adds ceramsite loaded with iron, manganese and nickel m...

Embodiment 2

[0030] Wastewater treatment method of a brewery in Guizhou

[0031] The processing capacity of the embodiment of the present invention is by 510m 3 / d design, the COD and total phosphorus of the biochemical tail water are high, and the chroma exceeds the standard, and the final treated effluent meets the discharge standard of the brewing industry. The specific influent water quality is shown in Table 2.

[0032] First, use sulfuric acid to acidify the biochemical tail water of brewing wastewater, control the pH value of the wastewater to 4.0, and oxidize the effluent after 10 minutes of acidification, and the oxidant is H 2 o 2 , dosing ratio according to H 2 o 2 The ratio of COD to biochemical tail water is 0.02:1. After reacting for 5 minutes, enter the microwave reactor for treatment. Add ceramsite loaded with iron, manganese and nickel metal oxides as a catalyst. The mass of iron oxide on the catalyst is 0.5% of the mass of ceramsite. , the mass of manganese oxide is ...

Embodiment 3

[0036] Advanced treatment method of wastewater from a brewery in Jiangsu

[0037] The processing capacity of the embodiment of the present invention is by 850m 3 / d design, the effluent COD, total phosphorus, ammonia nitrogen and chroma after the treatment of the sewage plant are not up to the standard, and the final treated effluent meets the discharge standard of the brewing industry. The specific influent and effluent water quality are shown in Table 3.

[0038] Specific process: First, use sulfuric acid to acidify the biochemical tail water of brewing wastewater, control the pH value of the wastewater to 3.5, and oxidize the effluent after 12 minutes of acidification, and the oxidant is H 2 o 2 , dosing ratio according to H 2 o 2 The ratio of COD to biochemical tail water is 0.04:1. After reacting for 10 minutes, it enters the microwave reactor for treatment. Adds ceramsite loaded with iron, manganese and nickel metal oxides as a catalyst. The mass of iron oxide on the...

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Abstract

The invention relates to a microwave-assisted catalytic oxidation method for biochemical tail water of brewing wastewater by various metals. Through catalytic oxidation by means of a catalyst compounded by various metals for sulfuric acid acidification, hydrogen peroxide oxidization and microwave assistance, COD, total phosphorus, ammonia nitrogen and chroma in tail water are efficiently removed, and effluent index demands are met efficiently and stably for a long time. The method is high in pertinence, high in reaction speed, stable in treatment effect, high in operability and low in operating cost, and provides a technical support for upgrading and reconstruction and standardized discharge of effluent treatment of breweries.

Description

technical field [0001] The invention relates to a method for treating brewing wastewater, in particular to a method for treating biochemical tail water of brewing wastewater by compounding multiple metals with microwave-assisted catalytic oxidation. Background technique [0002] The brewing industry mostly uses re-leaf to make wine, which leads to particularly complex water quality of brewing wastewater, with large fluctuations in water quality and volume, containing a large amount of inorganic phosphorus, organic nitrogen and other substances, which is poor biodegradability, high chroma, and refractory organic wastewater. With the introduction of my country's fermented alcohol and liquor industrial water pollutant discharge standards (GB 27631-2011), enterprises are facing the pressure of standard upgrading and transformation, and need to find an efficient method for phosphorus removal, ammonia removal and decolorization. Traditional metal catalysts have extremely strong ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F103/32
CPCC02F1/30C02F1/52C02F1/66C02F1/722C02F1/725C02F3/28C02F9/00C02F2103/325
Inventor 徐炎华宋丹陆曦刘志英
Owner NANJING UNIV OF TECH
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