Material for denitrification with autotrophic and heterotrophic synergistic biological denitrification method, and preparation method and application thereof

A denitrification and biological technology, applied in chemical instruments and methods, water pollutants, anaerobic digestion treatment, etc., can solve problems such as the inability to meet long-term stable operation and technical requirements for deep denitrification

Active Publication Date: 2020-07-03
北京涞澈科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems existing in the above-mentioned existing autotrophic or heterotrophic denitrification technology, and the materials used for denitrification in the autotrophic and heterotrophic synergistic biological denitrification method cannot meet the technical requirements of long-term stable operation and deep denitrification, the present invention provides a Material for denitrification by autotrophic heterotrophic synergistic biological denitrification method and preparation method thereof

Method used

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  • Material for denitrification with autotrophic and heterotrophic synergistic biological denitrification method, and preparation method and application thereof
  • Material for denitrification with autotrophic and heterotrophic synergistic biological denitrification method, and preparation method and application thereof
  • Material for denitrification with autotrophic and heterotrophic synergistic biological denitrification method, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Example 1 Preparation of Materials for Nitrogen Removal by Autotrophic Heterotrophic Synergistic Biological Denitrification

[0074] 1) Take sulfur-containing substances and organic matter of agricultural and forestry wastes and mix them;

[0075] 2) adding a mineral binder to the mixture obtained in step 1), and mixing to obtain a mixture;

[0076] 3) using a mechanical granulator to granulate the mixture prepared in step 2) to obtain a solid material;

[0077] 4) heat-treating the solid material prepared in step 3), and cooling to room temperature in a dry environment after the heat treatment to obtain the material for denitrification by the autotrophic-heterotrophic synergistic biological denitrification method.

[0078] The sulfur-containing substance in step 1) is 100-200 mesh sulfur powder with a purity of more than 90%wt. The organic matter of the agricultural and forestry waste is wood chips with a particle size of 100-150 mesh. The preparation method is to co...

Embodiment 2

[0086] Example 2 Preparation of Materials for Nitrogen Removal by Autotrophic Heterotrophic Synergistic Biological Denitrification

[0087] 1) Take sulfur-containing substances and organic matter of agricultural and forestry wastes and mix them;

[0088] 2) adding a mineral binder to the mixture obtained in step 1), and mixing to obtain a mixture;

[0089] 3) using a mechanical granulator to granulate the mixture prepared in step 2) to obtain a solid material;

[0090] 4) heat-treating the solid material prepared in step 3), and cooling to room temperature in a dry environment after the heat treatment to obtain the material for denitrification by the autotrophic-heterotrophic synergistic biological denitrification method.

[0091] The sulfur-containing substance in step 1) is 100-200 mesh sulfur powder with a purity of more than 90%wt. The agricultural and forestry waste organic matter is corn stalks with a particle size of 100-150 mesh. The preparation method is to collect ...

Embodiment 3

[0098] Example 3 Preparation of Materials for Nitrogen Removal by Autotrophic Heterotrophic Synergistic Biological Denitrification

[0099] 1) Take sulfur-containing substances and organic matter of agricultural and forestry wastes and mix them;

[0100] 2) adding a mineral binder to the mixture obtained in step 1), and mixing to obtain a mixture;

[0101] 3) using a mechanical granulator to granulate the mixture prepared in step 2) to obtain a solid material;

[0102] 4) heat-treating the solid material prepared in step 3), and cooling to room temperature in a dry environment after the heat treatment to obtain the material for denitrification by the autotrophic-heterotrophic synergistic biological denitrification method.

[0103] The sulfur-containing substance in step 1) is 100-200 mesh sulfur powder with a purity of more than 90%wt. The agricultural and forestry waste organic matter is rice husk powder with a particle size of 100-150 mesh. The preparation method is as fol...

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Abstract

The invention discloses a material for denitrification with an autotrophic and heterotrophic synergistic biological denitrification method, and a preparation method and an application thereof, and relates to the technical field of microbiological water treatment. The invention aims to solve problems in a conventional autotrophic or heterotrophic denitrification technology. The material for denitrification with the autotrophic and heterotrophic synergistic biological denitrification method provided by the invention comprises a sulfur-containing substance, agricultural and forestry waste organicmatters and a mineral adhesive; a modified material is prepared through a special heat treatment process; and the prepared material makes up the defects of autotrophic denitrification and heterotrophic denitrification, can guarantee long-term stable operation of a denitrification system and has high denitrification efficiency.

Description

technical field [0001] The invention relates to the technical field of microbial water treatment, in particular to a material for denitrification by an autotrophic heterotrophic synergistic biological denitrification method, a preparation method and an application. Background technique [0002] Excessive concentrations of nitrogen and phosphorus compounds in natural waters lead to the proliferation of algae in water, which is the key reason for the phenomenon of eutrophication in water bodies. The excessively multiplied algae died in large numbers and then rotted and deteriorated, causing the water quality to deteriorate sharply. For example, in 2007, cyanobacteria grew wildly in the Taihu Lake Basin, and the water supply of the whole city of Wuxi was interrupted for a week, causing billions of yuan in economic losses. When the source of drinking water is polluted by nitrogen-containing substances, the concentration of algae in the raw water entering the water treatment pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/16
CPCC02F3/28C02F2101/163C02F2305/06
Inventor 陈方鑫冯传平郝彦彭彤唐晟晔
Owner 北京涞澈科技发展有限公司
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