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Autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material and preparation method thereof

A denitrification and filter material technology, applied in chemical instruments and methods, water treatment of special compounds, anaerobic digestion treatment, etc., can solve the problems of inability to adapt to high-intensity reaction requirements of filters, inability to provide synergistic effects, and slow degradation of carbon sources, etc. problems, achieve the effect of realizing acid-base complementary benefits, shortening start-up time, and improving utilization speed

Pending Publication Date: 2022-06-21
无锡映川环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The present invention provides an autotrophic heterotrophic synergistic denitrification composite denitrification filter material and its preparation method, which can solve the problem of the porous autotrophic denitrification composite filter material prepared by the currently disclosed technology. The denitrification filter material has low material strength and cannot adapt to the high-strength reaction requirements of the filter. At the same time, it can solve the problems of slow carbon source degradation and inability to provide synergistic effects in the synergistic denitrification composite denitrification filter material prepared by the current public technology.

Method used

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  • Autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material and preparation method thereof
  • Autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material and preparation method thereof
  • Autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0053] Experimental conditions:

[0054] In a 1L wide-mouth glass bottle, add 500 g each of the denitrification composite denitrification filter materials A-F prepared in the examples.

[0055] Add 100ml of domesticated autotrophic denitrification sludge and 5ml of heterotrophic Denitrification Bacillus ECM-420 bacteria solution. Add 400ml of artificially prepared waste water, let it stand at a room temperature of 20-30°C, and monitor the degradation of total nitrogen in the supernatant. In order to eliminate the influence of sludge, the supernatant was poured out after every 48 hours, and after repeating 5 times, the experiment was started. After starting the test, 400ml of artificially prepared waste water was still added.

[0056] Heterotrophic denitrifying bacteria ECM-420 was purchased from Wuxi Yingchuan Environmental Technology Co., Ltd., with a bacterial content greater than 3x10 8 CFU / ml; the strain has been publicly sold on Alibaba and the market before the applic...

Embodiment 2

[0088] In a 1L wide-mouth glass bottle, add 500 g of each denitrification composite denitrification filter material of the control group. Add 100ml of domesticated autotrophic denitrification sludge and 5ml of heterotrophic Denitrification Bacillus ECM-420 bacteria solution. Add 400ml of artificially prepared waste water, let it stand at a room temperature of 20-30°C, and monitor the degradation of total nitrogen in the supernatant. In order to eliminate the influence of sludge, the supernatant was poured out after every 48 hours, and after repeating 5 times, the experiment was started.

[0089] Heterotrophic denitrifying bacteria ECM-420 was purchased from Wuxi Yingchuan Environmental Technology Co., Ltd., with a bacterial content greater than 3x10 8 CFU / ml;

[0090] Wherein the influent of control group 5 is in the formula of artificial water distribution above, adds the anhydrous sodium acetate of 60mg / L.

[0091] Total nitrogen was determined by LH-380 total nitrogen an...

Embodiment 3

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Abstract

The invention provides an autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material and a preparation method thereof, and can solve the problems that a porous autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material prepared by a disclosed technology at present is low in material strength and cannot meet the high-strength reaction requirement of a filter tank. The autotrophic and heterotrophic synergistic denitrification composite nitrogen removal filter material is characterized by being prepared from the following raw materials in parts by weight: 80 to 400 parts of sulfur, 12 to 60 parts of water-soluble organic acid salt and 0 to 100 parts of insoluble carbonate. The water-soluble organic acid salt is used for pore-forming on the surface, on one hand, the water-soluble organic acid salt is suitable for adhesion growth of bacteria and can shorten the starting time, and on the other hand, the internal organic acid salt is treated to be in a stable state due to adhesion of sulfur, the strength of the material cannot be damaged, and the high-strength reaction requirement of the filter tank can be met.

Description

technical field [0001] The invention relates to the technical field of water environment treatment, in particular to a biological denitrification material used for sewage and wastewater treatment, in particular to an autotrophic heterotrophic synergistic denitrification composite denitrification filter material and a preparation method thereof. Background technique [0002] Biological denitrification is the most economical and effective denitrification method. It mainly uses denitrifying bacteria to remove NO in water under anoxic conditions. 3 - and NO 2 - Converted to N2, thereby reducing the concentration of nitrate nitrogen in water. At present, the lack of carbon source in sewage is the main factor limiting the efficiency of nitrogen removal. In a large number of municipal and industrial sewage plants, it is usually necessary to supplement a large amount of carbon sources (such as methanol, sodium acetate, glucose, etc.) to achieve the purpose of denitrification and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34C02F101/16
CPCC02F3/28C02F3/34C02F2305/06C02F2101/163
Inventor 纪群夏冬香
Owner 无锡映川环境技术有限公司
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