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A treatment method for ammonia nitrogen-containing wastewater based on packing type catalysis

A technology of ammonia nitrogen wastewater and treatment method, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as high cost and complicated process, and achieve low cost and low equipment requirements. , The effect of high ammonia nitrogen removal rate

Active Publication Date: 2021-07-20
浙江工业大学上虞研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively remove ammonia nitrogen in wastewater, but the cost is high and the process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for treating ammonia nitrogen-containing waste water based on packing type catalysis, comprising the following steps:

[0027] (1) Pulverize the passion fruit shell, dry it at 60-80°C for 1 hour, then freeze-dry it at -10~-5°C for 8 hours, and grind it to obtain the passion fruit shell powder;

[0028] (2) Mix and granulate the passion fruit shell powder, silica gel, domestic sludge, and sodium polyacrylate prepared above, and then sinter at 400°C for 3 hours under inert gas in a muffle furnace to obtain a composite filler ; Wherein, the mass ratio of passion fruit shell powder, silica gel, domestic sludge, and sodium polyacrylate is 4:1:0.5:0.3;

[0029] (3) The above-mentioned composite filler is treated with plasma; wherein, the atmosphere during the plasma treatment is an inert gas, the pressure of the treatment chamber is 10Pa, and the microwave power for exciting the plasma is 5W / cm 2 , the processing time is 5-10min;

[0030] (4) Disperse the plasma-tr...

Embodiment 2

[0034] A method for treating ammonia nitrogen-containing waste water based on packing type catalysis, comprising the following steps:

[0035] (1) Crushing the passion fruit shell, drying at 60-80°C for 2 hours, then freeze-drying at -10~-5°C for 13 hours, and grinding to obtain passion fruit shell powder;

[0036] (2) Mix and granulate the passion fruit shell powder, silica gel, domestic sludge, and sodium polyacrylate prepared above, and then sinter at 600°C for 8 hours under inert gas in a muffle furnace to obtain a composite filler ; Wherein, the mass ratio of passion fruit shell powder, silica gel, domestic sludge, and sodium polyacrylate is 4:2:1.5:0.3;

[0037] (3) The above-mentioned composite filler is treated with plasma; wherein, the atmosphere during the plasma treatment is inert gas, the pressure of the treatment chamber is 80Pa, and the microwave power for exciting the plasma is 8W / cm 2 , the processing time is 5-10min;

[0038] (4) Disperse the plasma-treated ...

Embodiment 3

[0042] A method for treating ammonia nitrogen-containing waste water based on packing type catalysis, comprising the following steps:

[0043](1) Pulverize the passion fruit shell, dry it at 60-80°C for 1.5 hours, then freeze-dry it at -10~-5°C for 9 hours, and grind it to obtain the passion fruit shell powder;

[0044] (2) Mix and granulate the passion fruit shell powder, silica gel, domestic sludge, and sodium polyacrylate prepared above, and then sinter at 400°C for 5 hours under inert gas in a muffle furnace to obtain a composite filler ; Wherein, the mass ratio of passion fruit shell powder, silica gel, domestic sludge, and sodium polyacrylate is 4:1.2:0.7:0.3;

[0045] (3) The above-mentioned composite filler is treated with plasma; wherein, the atmosphere during the plasma treatment is an inert gas, the pressure of the treatment chamber is 30Pa, and the microwave power for exciting the plasma is 6W / cm 2 , the processing time is 5-10min;

[0046] (4) Disperse the plasm...

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Abstract

The invention discloses a method for treating ammonia-nitrogen-containing wastewater based on packing type catalysis, which specifically comprises the following steps: firstly, passion fruit shell powder is prepared by using passion fruit shell as a raw material, and the powder is mixed with silica gel, domestic sludge, and sodium polyacrylate Composite fillers are prepared by mixing and sintering; then they are treated with plasma and coated with polymers to obtain modified composite fillers; the biofilm reactors used in wastewater treatment use transparent plexiglass as filter columns, and the filter columns are filled with the above-mentioned Prepared packing; pump the ammonia nitrogen wastewater into the biofilm reactor by the peristaltic pump, expose it for 3‑5 days, and then continue to pump the ammonia nitrogen wastewater into the biofilm reactor to remove the ammonia nitrogen. After removing the ammonia nitrogen The waste water is discharged after reaching the standard; the filler in the filter column can be reused after regeneration. The method disclosed by the invention has the advantages of simple operation, high removal rate of ammonia nitrogen and no secondary pollution to water body.

Description

technical field [0001] The invention relates to a treatment method for ammonia nitrogen wastewater, in particular to a treatment method for ammonia nitrogen-containing wastewater based on packing type catalysis. Background technique [0002] The synthetic ammonia industry produces a large amount of industrial wastewater containing ammonia nitrogen during the production process. The wastewater in this industry has the characteristics of many types of pollutants, poor biodegradability, and high ammonia nitrogen content. At present, synthetic ammonia industrial wastewater is generally treated by biochemical methods, especially the biological denitrification process represented by A / O denitrification. The principle of biochemical method mainly includes nitrification and denitrification. Nitrification is the main way for ammonia to be converted into nitrate, and ammonia is converted into nitrate through the sequential action of ammonia oxidizing bacteria and nitrite oxidizing ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/10C02F3/34C02F101/16
CPCC02F3/10C02F3/105C02F3/301C02F3/348C02F2101/16Y02W10/10
Inventor 许萌罗书平叶青王哲
Owner 浙江工业大学上虞研究院有限公司
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