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Sludge carbon-based ozone catalyst and preparation method thereof

The technology of sludge charcoal and catalyst is applied in the field of sludge charcoal-based ozone catalyst and its preparation, which can solve the problem of high production cost and achieve the effects of long service life, low raw material cost and stable structure.

Pending Publication Date: 2020-09-04
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the preparation process of sintered ozone catalyst and the problems of high production cost, the present invention provides a preparation method of sludge charcoal-based ozone catalyst, using sludge charcoal to make sintered sludge charcoal-based ozone catalyst, realizing The resource utilization of sludge is beneficial to reduce the cost of ozone catalytic oxidation treatment of biochemical effluent

Method used

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  • Sludge carbon-based ozone catalyst and preparation method thereof
  • Sludge carbon-based ozone catalyst and preparation method thereof
  • Sludge carbon-based ozone catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Mix the powder raw materials such as sludge charcoal, fine iron powder, bentonite, gas-forming powder, copper powder and manganese acetate according to the mass ratio of 54:32:8:10:9:5.

[0038] (2) Add an appropriate amount of water to stir and mix, extrude through a screw extruder and polish to make raw meal balls with a particle size of about 6-8mm.

[0039] (3) After the raw material balls are air-dried at room temperature, they are dried in a blast drying oven at 110°C.

[0040](4) Put the dried raw material balls into the resistance furnace, set the heating rate to 10°C / min, keep warm for 1h when the temperature rises to 600°C, then continue to heat up and roast in the resistance furnace at 1160°C for 40min to make sintered dirt Peat based ozone catalyst.

[0041] Take 200mL of biochemical tail water from a sewage treatment plant, the amount of catalyst is 25g, the aeration contact time is 1h, the gas flow rate at the outlet of the ozone generator is 0.1L / min...

Embodiment 2

[0046] (1) Mix powdered sludge charcoal, fine iron powder, bentonite, gas-forming powder and nickel oxide evenly according to the mass ratio of 54:32:15:10:5.

[0047] (2) Add an appropriate amount of water to stir and mix, extrude through a screw extruder and polish to make raw meal balls with a particle size of about 6-8mm.

[0048] (3) After the raw meal balls are air-dried at room temperature, they are dried in a blast drying oven at 105°C.

[0049] (4) Put the dried raw meal balls into the resistance furnace, set the heating rate to 10°C / min, heat it up to 600°C for 1 hour, then continue to heat up and bake at 1120°C for 60 minutes in the resistance furnace to make sintered sludge Carbon based ozone catalyst.

[0050] Take 200mL of biochemical tail water from a sewage treatment plant, the amount of catalyst is 25g, the aeration contact time is 1h, the gas flow rate at the outlet of the ozone generator is 0.1L / min, the ozone contact time is 1h, and the ozone dosage is abo...

Embodiment 3

[0052] (1) Mix powdered sludge carbon, alumina, bentonite, nickel oxide, manganese dioxide, and ammonium bicarbonate evenly according to the mass ratio of 80:40:10:5:10:2.

[0053] (2) Add an appropriate amount of water to stir and mix, extrude through a screw extruder and polish to make raw meal balls with a particle size of about 6-8mm.

[0054] (3) After the raw material balls are air-dried at room temperature, they are dried in a blast drying oven at 115°C.

[0055] (4) Put the dried raw meal balls into the resistance furnace, set the heating rate to 10°C / min, keep warm for 1h when the temperature rises to 600°C, then continue to heat up and roast at 1000°C for 60min in the resistance furnace to make sintered sludge Carbon based ozone catalyst.

[0056] Take 200mL of biochemical tail water from a sewage treatment plant, the amount of catalyst is 25g, the aeration contact time is 1h, the gas flow rate at the outlet of the ozone generator is 0.1L / min, the ozone contact time...

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Abstract

The invention discloses a sludge carbon-based ozone catalyst and a preparation method thereof. The preparation method comprises the steps that (1) evenly mixing powdery sludge carbon, a catalytic component, a pore-forming agent and an adhesive as raw materials, adding water, and performing stirring and mixing to obtain a mixed material; (2) extruding and granulating the mixed material through a screw extruder, and then polishing to prepare raw material balls; (3) air-drying the raw material balls at room temperature, and drying the raw material balls in an electrothermal constant-temperature blast drying oven; and (4) roasting the dried raw material balls in a resistance furnace to prepare the sintered sludge carbon-based ozone catalyst. The preparation method is simple in process route, low in raw material cost and easy to control in production process, and the prepared sludge carbon-based ozone catalyst is developed in pores, high in mechanical strength and long in service life. Thecatalyst can be used for advanced treatment of industrial wastewater of printing and dyeing, chemical engineering and the like, and can also be used for advanced treatment of biochemical effluent of sewage treatment plants.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sludge carbon-based ozone catalyst and a preparation method thereof. Background technique [0002] In recent years, with the increase of refractory organic matter in sewage, it is often difficult to discharge sewage by biological methods, and the market demand for further advanced treatment of biochemical effluent is increasingly urgent. Commonly used methods of advanced sewage treatment, such as coagulation and sedimentation, adsorption, membrane filtration, etc., can realize the separation and transfer of pollutants, but may be accompanied by the generation of a large amount of sludge and the enrichment of higher concentrations of pollutants. secondary pollution problem. In contrast, the advanced oxidation method uses hydroxyl radicals as the main oxidant to oxidize macromolecular refractory organics into low-toxic or non-toxic small molecular substances. Divided i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188B01J23/86B01J35/04B01J35/10B01J37/08C02F1/78
CPCB01J27/188B01J23/862B01J23/002B01J37/0018B01J37/08B01J37/088C02F1/78C02F1/725B01J2523/00B01J35/56B01J35/61B01J2523/31B01J2523/67B01J2523/842
Inventor 王长智王睿谭映宇丁志农钱洲梅荣武茅宏
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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