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A microbial catalytic carrier for total nitrogen removal

A catalytic carrier and microbial technology, which is applied in the field of water treatment, can solve the problems of microbial carrier loss after long-term use, and achieve the effects of avoiding subsequent serious acidification, improving adsorption performance, and reducing loss.

Active Publication Date: 2022-05-06
河北弘格环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a microbial catalytic carrier for total nitrogen removal, which solves the problem of loss of microbial carrier in the prior art after long-term use

Method used

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  • A microbial catalytic carrier for total nitrogen removal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Curing binder: starch, hydrogen peroxide solution, sodium hydroxide, aluminum dihydrogen phosphate, sodium thiosulfate, ferrous hydroxide, mass ratio is 10:1:2:1:0.5:1, hydrogen peroxide solution The mass concentration is 0.5%, and the preparation method of curing binder comprises the following steps:

[0031] 1) configuring hydrogen peroxide aqueous solution;

[0032] 2) Add starch and sodium thiosulfate and heat to 65°C while stirring;

[0033] 3) Add sodium hydroxide, aluminum dihydrogen phosphate, and ferrous hydroxide and stir, continue heating and keeping warm for 1 hour, then dry and grind until the particle size is less than 100 μm to obtain a cured binder.

[0034] Microbial catalytic carrier: 20 parts of sulfuric acid, 10 parts of sodium sulfide, 10 parts of sodium thiosulfate, 1 part of sodium chloride, 0.3 parts of sodium carbonate, 0.3 parts of magnesium oxide, 20 parts of manganese iron ore powder, 15 parts of fly ash, solidified sticky 5 parts of binder...

Embodiment 2

[0038] Curing binder: starch, hydrogen peroxide solution, sodium hydroxide, aluminum dihydrogen phosphate, sodium thiosulfate, ferrous hydroxide, mass ratio is 10:1:2:1:0.5:1, hydrogen peroxide solution The mass concentration is 0.5%, and the preparation method of curing binder comprises the following steps:

[0039] 1) configuring hydrogen peroxide aqueous solution;

[0040] 2) Add starch and sodium thiosulfate and heat to 60°C while stirring;

[0041] 3) Add sodium hydroxide, aluminum dihydrogen phosphate, and ferrous hydroxide and stir, continue heating and keeping warm for 1 hour, then dry and grind until the particle size is less than 100 μm to obtain a cured binder.

[0042] Microbial catalytic carrier: 30 parts of sulfuric acid, 20 parts of sodium sulfide, 20 parts of sodium thiosulfate, 5 parts of sodium chloride, 4 parts of sodium carbonate, 3 parts of magnesium oxide, 30 parts of manganese iron ore powder, 20 parts of fly ash, solidified sticky 10 parts of binder, ...

Embodiment 3

[0046] Curing binder: starch, hydrogen peroxide aqueous solution, sodium hydroxide, aluminum dihydrogen phosphate, sodium thiosulfate, ferrous hydroxide, mass ratio is 10:1:2:1:0.5:1, hydrogen peroxide aqueous solution The mass concentration is 1%, and the preparation method of curing binder comprises the following steps:

[0047] 1) configuring hydrogen peroxide aqueous solution;

[0048] 2) Add starch and sodium thiosulfate and heat to 70°C while stirring;

[0049] 3) Add sodium hydroxide, aluminum dihydrogen phosphate, and ferrous hydroxide and stir, continue heating and keeping warm for 1 hour, then dry and grind until the particle size is less than 100 μm to obtain a cured binder.

[0050] Microbial catalytic carrier: 25 parts of sulfuric acid, 15 parts of sodium sulfide, 15 parts of sodium thiosulfate, 3 parts of sodium chloride, 2 parts of sodium carbonate, 1 part of magnesium oxide, 25 parts of manganese iron ore powder, 18 parts of fly ash, solidified sticky 8 parts...

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Abstract

The invention relates to the technical field of water treatment, and proposes a microbial catalytic carrier for total nitrogen removal, which comprises the following components in parts by weight: 20-30 parts of sulfuric acid, 10-20 parts of sodium sulfide, and 10-20 parts of sodium thiosulfate 20 parts, 1-5 parts of sodium chloride, 0.3-4 parts of sodium carbonate, 0.3-3 parts of magnesium oxide, 20-30 parts of manganese iron ore powder, 15-20 parts of fly ash, 5-10 parts of solidified binder; The solidified binder comprises starch, hydrogen peroxide aqueous solution, sodium hydroxide, aluminum dihydrogen phosphate, sodium thiosulfate, and ferrous hydroxide, and the mass ratio is 10:1:2:1:0.5:1. Through the above-mentioned technical scheme, the problem of loss of the microbial carrier during long-term use is solved.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a microbial catalytic carrier for total nitrogen removal. Background technique [0002] Nitrogen-containing pollutants in water bodies are divided into organic nitrogen and inorganic nitrogen. Inorganic nitrogen has three forms of ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen. Organic nitrogen includes amino acids, proteins, urea and other organic compounds. When the nitrogen discharged into the water body exceeds the self-purification capacity of the water body, it will lead to eutrophication of the water body, thereby affecting the drinking safety of surface water and groundwater, and in severe cases, it will pose a threat to human and animal health. [0003] At present, the most commonly used microbial carriers for total nitrogen removal in the field of water treatment are ceramsite, volcanic rock, zeolite and resin, etc., which can only provide growth space...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/28
CPCC02F3/34C02F3/2806C02F2203/006C02F2209/16
Inventor 曹树余周柳春
Owner 河北弘格环保科技有限公司