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A kind of denitrification accelerator and its application

An accelerator, denitrification technology, applied in anaerobic digestion treatment, chemical instruments and methods, special compound water treatment, etc., can solve the problems of unstable biological denitrification effect, low denitrification efficiency, and large dosage. , to achieve the effect of strengthening the microbial diversity of the system, saving the investment of civil construction funds, and improving the impact resistance.

Active Publication Date: 2021-10-22
普罗生物技术(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. As an external carbon source, methanol itself is a flammable and explosive chemical, which has strict requirements on the dosing equipment and is very dangerous; and it is a little toxic when it is added to the wastewater treatment system, which greatly limits the Methanol is used in sewage plants
[0006] 2. In the process of biological denitrification, sodium acetate is a carbon source with high denitrification efficiency, but after use, sodium acetate will introduce inorganic salts, which will increase the salt content of wastewater; Dissolving, which will inevitably cause fouling of pipeline equipment, and has a strong odor, making it inconvenient to add
[0007] 3. Glucose is a green carbon source, but its effect on biological denitrification is unstable, the efficiency is low, and the dosage is large
[0008] 4. Starch is a high-molecular organic matter, and microorganisms need to go through a series of metabolic processes to use it for denitrification, and the denitrification efficiency is not high
Pump the solution from the reaction kettle to the storage tank and let it stand. The supernatant liquid is the prepared composite carbon source for denitrification. However, the introduction of sodium acetate will cause the above-mentioned defects, and ethanol has a low ignition point, which has certain insecurity

Method used

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  • A kind of denitrification accelerator and its application
  • A kind of denitrification accelerator and its application
  • A kind of denitrification accelerator and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] The present embodiment provides a denitrification accelerator, which includes the following components:

[0094] (1) Glycerol 750kg

[0095] (2) Mineral elements 10kg, including Co(NO 3 ) 2 ·6H 2 O 3.95kg (cobalt 0.8kg), ZnCO 3 4.6kg (zinc 2.4kg), Mn(NO 3 ) 2 ·H 2 O 1.37kg (manganese 0.3kg), MgCO 3 ·3H 2 O 11.36kg (magnesium 2kg), NiNO 3 ·6H 2 O7.43kg (nickel 1.5kg), Na 2 MoO 4 2H 2 O 1.26kg (molybdenum 0.5kg), Fe 2 (SO 4 ) 3 17.85kg (iron 2.5kg)

[0096] (3) 10kg of organic acids, including 5kg of citric acid, 1.5kg of acetic acid, and 3.5kg of nucleotides

[0097] (4) 12kg of biological enzymes, including 4kg of protease, 3kg of cellulase, and 5kg of lipase

[0098] (5) Organic salt 25kg, including sodium gluconate 12kg, sodium citrate 13kg

[0099] (6) Carbohydrate 1.5kg, including chitosan 1.5kg

[0100] (7) Anionic surfactant 2kg

[0101] (8) Algae matter 1.5kg

[0102] Mix the above raw materials, add water to a total weight of 1000kg, stir...

Embodiment 2

[0104] The present embodiment provides a denitrification accelerator, which includes the following components:

[0105] (1) Glycerol 800kg

[0106] (2) Mineral elements 10kg, including Co(NO 3 ) 2 ·6H 2 O 3.95kg (cobalt 0.8kg), ZnCO 3 4.6kg (zinc 2.4kg), Mn(NO 3 ) 2 ·H 2 O 1.37kg (manganese 0.3kg), MgCO 3 ·3H 2 O 11.36kg (magnesium 2kg), NiNO 3 ·6H 2 O7.43kg (nickel 1.5k), Na 2 MoO 4 2H 2 O 1.26kg (molybdenum 0.5kg), Fe 2 (SO 4 ) 3 17.85kg (iron 2.5kg)

[0107] (3) 10kg of organic acids, including 5kg of citric acid, 1.5kg of acetic acid, and 3.5kg of nucleotides

[0108] (4) 10kg of biological enzymes, including 3kg of protease, 3kg of cellulase, and 4kg of lipase

[0109] (5) Organic salt 15kg, including sodium gluconate 6kg, sodium citrate 9kg

[0110] (6) Carbohydrate 1.5kg, including chitosan 1.5kg

[0111] (7) Anionic surfactant 2kg

[0112] (8) Algae matter 1.5kg

[0113] Mix the above raw materials, add water to a total weight of 1000kg, stir in...

Embodiment 3

[0115] The difference from Example 1 is that iron is not included in the mineral elements, the mass of manganese in the mineral elements is 0.28kg, and the mass of zinc is 2.22kg.

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Abstract

The present invention relates to a denitrification accelerator and its application. The denitrification accelerator comprises the following components according to mass percentage: polyol 75%-80%, mineral element 0.7%-2.25%, organic acid 0.5%-1.0% , biological enzyme 1.0% - 2.5%, water to 100%; the molecular weight of the polyol ≤ 100; the denitrification accelerator is used for wastewater treatment; the denitrification accelerator of the present invention only needs to add a small amount to achieve higher At the same time, it promotes the diversification of microorganisms, and is non-toxic and harmless. It can be directly added by metering pumps. It is convenient to add, no special protective measures are required, and it is also non-flammable and non-explosive. There is no need to build an explosion-proof area to store carbon sources. It saves capital investment in civil engineering. At the same time, the denitrification accelerator is a liquid carbon source with a low freezing point. It does not need indoor storage in winter and will not condense.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a denitrification accelerator and its application. Background technique [0002] Excessive total nitrogen in wastewater has always been a chronic problem in the sewage treatment system. Wastewater containing excessive nitrogen compounds discharged into ditches and rivers will cause eutrophication of the water body and affect the balance of the ecological environment. Nowadays, biological nitrification and denitrification process has been widely used in denitrification treatment. However, sewage treatment plants generally have the problem of insufficient carbon sources for denitrification, and the lack of carbon sources has seriously restricted the efficiency of biological denitrification. [0003] Biological denitrification is under anaerobic conditions, using organic carbon sources as electron donors and nitrate nitrogen as electron acceptors to convert NO x -N conver...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F3/34C02F101/16C02F101/38
CPCC02F3/28C02F3/342C02F2101/16C02F2101/38C02F2305/06
Inventor 王伟光
Owner 普罗生物技术(上海)有限公司
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