UBF reactor used for coupled denitriding via anaerobic ammonia oxidation-sulfur-based autotrophic denitrification, and system and denitriding method thereof

An anaerobic ammonium oxidation and coupled denitrification technology, applied in the field of wastewater treatment, can solve the problems of difficult to meet the requirements of wastewater denitrification, difficult to meet the requirements of wastewater, increase operating costs, etc., to reduce the loss of autotrophic microorganisms and sludge production. The effect of less and lower operating costs

Active Publication Date: 2017-09-15
NANJING UNIV
View PDF7 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The Chinese patent invention name "A whole-process denitrification process coupled with anaerobic ammonium oxidation and denitrification" (patent publication number: CN 105110472 A) completely converts part of the influent ammonia nitrogen into nitrate nitrogen, and denitrifies it through short-range denitrification. Nitrate nitrogen is reduced to nitrite nitrogen, and finally the anaerobic ammonium oxidation process is carried out to overcome the problem that nitrite is difficult to accumulate efficiently, but this process needs to completely convert 52.3% to 56.9% of ammonia nitrogen into nitrate nitrogen, and aeration The amount is large, the energy consumption is high, and the short-range denitrification process still needs to consume org

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • UBF reactor used for coupled denitriding via anaerobic ammonia oxidation-sulfur-based autotrophic denitrification, and system and denitriding method thereof
  • UBF reactor used for coupled denitriding via anaerobic ammonia oxidation-sulfur-based autotrophic denitrification, and system and denitriding method thereof
  • UBF reactor used for coupled denitriding via anaerobic ammonia oxidation-sulfur-based autotrophic denitrification, and system and denitriding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 The device diagram shown is a UBF reactor using anaerobic ammonium oxidation-sulfur autotrophic denitrification coupling denitrification. The UBF reactor is divided into three parts from bottom to top, which are respectively suspended sludge area 49 and braided packing Area 47 and marcasite packing area 45, slow flow baffle 48 is set between suspended sludge area 49 and braided packing area 47, porous support is set between braided packing area 47 and marcasite packing area 45 Layer 46. The outer layer of the UBF reactor is provided with a thermal insulation layer 7 . The upper part of the porous supporting layer 46 is provided with a sampling port 41, and the top of the UBF reactor is provided with a three-phase separator 43 and an overflow weir 44, and the effluent of the UBF reactor is discharged through the outlet. Porous supporting layer 46 is porous limestone, porous limestone is used as supporting frame (porosity reaches 50%~60%), and the pore ...

Embodiment 2

[0054] The UBF reactor and its system are the same as in Example 1, except that the parameters set are: the height ratio of the suspended sludge area, the braided packing area and the marcasite packing area is 1.4:1:0.8; The diameter ratio of the inner and outer layers is 1:1.1, and the height-to-diameter ratio is 5:1; the average diameter of the equal surface area of ​​sulfide precipitation is 0.6cm, and the average pore diameter of the porous supporting layer is 0.3cm.

[0055] The specific steps are the same as in Example 1, except that the control parameters of the process are as follows: the control parameters of the process are that the influent is aerated, DO rises to about 1.3mg / L, and the pH is adjusted to about 8 by adding acid and alkali; The hydraulic retention time of the UBF reactor is 6h; the reflux ratio in the suspended sludge area is 5:1; the DO concentration range at the sampling port at the bottom of the marcasite filling area is controlled below 0.2mg / L, an...

Embodiment 3

[0057] The UBF reactor and its system are the same as in Example 1, except that the parameters set are as follows: the height ratio of the suspended sludge area, the braided packing area and the marcasite packing area is 1.5:1:0.8; The diameter ratio of the inner and outer layers is 1:1.2, and the height-to-diameter ratio is 6:1; the average diameter of the equal surface area of ​​sulfide precipitation is 0.7cm, and the average pore diameter of the porous supporting layer is 0.4cm.

[0058] The specific steps are the same as in Example 1, except that the control parameters of the process are as follows: the control parameters of the process are that the influent is aerated, DO rises to about 1.5mg / L, and the pH is adjusted to about 9 by adding acid and alkali; The hydraulic retention time of the UBF reactor is 7h; the reflux ratio in the suspended sludge area is 6:1; the DO concentration range at the sampling port at the bottom of the marcasite filling area is controlled below ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a UBF reactor used for coupled denitriding via anaerobic ammonia oxidation-sulfur-based autotrophic denitrification, and a system and a denitriding method thereof, and belongs to the technical field of waste water processing. The denitriding method is suitable to be used for processing high mmonia nitrogen low C/N waste water, partial nitrification is used for providing all reaction substrates of anaerobic ammonia oxidation, marcasite is used for providing electron donors of sulfur-based autotrophic denitrification; porous limestone is taken as a supporting framework of a limestone filling layer; and nitrite nitrogen generated via nitrosation, and nitrate nitrogen generated via nitrification and anaerobic ammonia oxidation are taken as electron acceptors. The denitriding method is high in ammonium-nitrogen removal rate; operation stability is high; compared with conventional nitration-denitrification denitriding method, the denitriding method possesses following advantages: no extra organic matter is added as the electron donor, marcasite is ued for providing the electron donors of sulfur-based autotrophic denitrification bacteria, cost is low, controllability is high, effluent is stable, sludge yield is low, and energy consumption is low.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a UBF reactor utilizing anammox-sulfur autotrophic denitrification coupling denitrification and its system and denitrification method. The invention is suitable for denitrification of wastewater with high ammonia nitrogen and low C / N Nitrogen treatment, such as biochemical tail water and sludge digestion liquid of aerobic or anaerobic non-denitrification process. Background technique [0002] With the continuous development of industrialization and urbanization in our country, a large amount of waste water containing high concentration of nitrogen is discharged into rivers and lakes, resulting in eutrophication of water bodies, leading to a large number of algae reproduction, which not only has a great impact on the survival of fish and other aquatic organisms Moreover, harmful substances such as algae toxins and nitrite in drinking water exceed the standard, causing harm to hum...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F3/28C02F101/16
CPCC02F3/286C02F3/2866C02F2101/16
Inventor 刘波孙信柏杜凌峰盛世雄梁子侯翔宇姚芳
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products