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A short-range nitrification and denitrification biofilm denitrification reactor and a method for rapid film formation

A short-range nitrification and reactor technology, applied in the field of sewage biological treatment, can solve problems such as insufficient residence time, short flow of sewage, incomplete reaction, etc., to achieve enhanced oxidation decomposition and nitrogen conversion and removal, slow down blockage, and enhance treatment efficiency Effect

Active Publication Date: 2019-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this reactor is that the water inlet and outlet of the aerobic zone are on one side, which is easy to cause short flow of sewage, resulting in insufficient residence time and incomplete reaction.

Method used

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  • A short-range nitrification and denitrification biofilm denitrification reactor and a method for rapid film formation
  • A short-range nitrification and denitrification biofilm denitrification reactor and a method for rapid film formation
  • A short-range nitrification and denitrification biofilm denitrification reactor and a method for rapid film formation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The sewage to be treated is nitrogenous sewage from a sewage treatment plant, the concentration of ammonia nitrogen is 300mg / L, the concentration of total nitrogen is 500mg / L, the concentration of COD is 400mg / L, and B / C=0.5. Control the pH value of the sewage to 7.0, the treatment temperature is 25°C, add glucose and potassium dihydrogen phosphate to adjust the BOD in the wastewater 5 :N:P=100:5:1.

[0037] (1) Put corresponding fillers in the anaerobic zone A1, anaerobic zone A2 and aerobic zone O, so that the volume of the fillers accounts for 3 / 4 of the volume of each reaction zone, and the activated sludge is filled according to the sludge concentration of 5g / L. Scatter the mud into the fillers in the three reaction zones; load palladium-copper supported activated carbon catalyst particles in the transition zone, the upper surface of the catalyst particles is flush with the upper surface of the vertical plate b, and the catalyst volume accounts for about 3 / 3 of the...

Embodiment 2

[0042] The sewage to be treated is nitrogenous sewage from a sewage treatment plant, the concentration of ammonia nitrogen is 300mg / L, the concentration of total nitrogen is 500mg / L, the concentration of COD is 400mg / L, and B / C=0.5. Control the pH value of the sewage to 8.0, the treatment temperature is 35°C, add glucose and potassium dihydrogen phosphate to adjust the BOD in the wastewater 5 :N:P=100:5:1.

[0043] (1) Put corresponding fillers in the anaerobic zone A1, anaerobic zone A2 and aerobic zone O, so that the volume of the fillers accounts for 3 / 5 of the volume of each reaction zone, and the activated sludge is filled according to the sludge concentration of 10g / L. Scatter the mud into the fillers of the three reaction zones; load palladium-copper supported activated carbon catalyst particles in the transition zone, the upper surface of the catalyst particles is flush with the upper surface of the vertical plate b, and the volume of the catalyst accounts for 3 / 4 of t...

Embodiment 3

[0048] The sewage to be treated is nitrogenous sewage from a sewage treatment plant, the concentration of ammonia nitrogen is 300mg / L, the concentration of total nitrogen is 500mg / L, the concentration of COD is 400mg / L, and B / C=0.5. Control the pH value of the sewage to 7.5, the treatment temperature is 30°C, add glucose and potassium dihydrogen phosphate to adjust the BOD in the wastewater 5 :N:P=100:5:1.

[0049] (1) Put corresponding fillers in the anaerobic zone A1, anaerobic zone A2 and aerobic zone O, so that the volume of the fillers accounts for 3 / 5 of the volume of each reaction zone, and the activated sludge is filled according to the sludge concentration of 7g / L. Scatter the mud into the fillers of the three reaction zones; load palladium-copper supported activated carbon catalyst particles in the transition zone, the upper surface of the catalyst particles is flush with the upper surface of the vertical plate b, and the volume of the catalyst accounts for 3 / 4 of th...

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Abstract

The invention discloses a short-distance nitrification / denitrification biomembrane nitrogen-removal reactor and a rapid membrane forming method. According to the invention, a transverse plate a, a vertical plate b, a vertical plate c and a transverse plate d are arranged in the reactor, the reactor is transversely divided into an upper part and a lower part by the transverse plate a , the lower part is a first anaerobic zone, the upper part is vertically divided into three parts by the vertical plate b and the vertical plate c, which are an aerobic zone, a transition zone and a second anaerobic zone; the lower end of the vertical plate b is connected with the transverse plate a, a water passing port is kept at the top of the upper end and the reactor, the upper end of the vertical plate c and the top of the reactor are connected in a sealing mode, the water passing port is kept at the lower end and the transverse plate a, the left end of the transverse plate d and the bottom of the vertical plate c are connected in the sealing mode; the right end and the wall of the reactor are connected in the sealing mode; and the transition zone is filled with palladium-copper supported active carbon catalyst particles. While the membrane is formed, water is introduced from bottom, the sewage passes through the first anaerobic zone, the aerobic zone, the transition zone and the second anaerobic zone in order, then is discharged from the upper part of the reactor, biomembranes at each area in the reactor are subjected to partitioning culture, the biomembrane having specific performance can be better formed, the membrane forming speed is rapid, and the nitrogen removal effect is good.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, and in particular relates to a short-range nitrification and denitrification biofilm denitrification reactor and a rapid membrane-hanging method. Background technique [0002] In recent years, with the rapid development of my country's urbanization, my country's water environment pollution and water eutrophication have become more and more serious. More and more seriously hinder the development of our national economy. Nitrogen is the main pollutant that causes eutrophication in water bodies, and it is particularly important to control the total nitrogen content in discharged sewage. [0003] The traditional denitrification treatment process is full nitrification and denitrification biological denitrification, that is, under the action of nitrosifying bacteria, ammonia nitrogen is oxidized into nitrite nitrogen, and then under the action of nitrifying bacteria, nitrite nitroge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 赵胜楠高会杰孙丹凤郭志华
Owner CHINA PETROLEUM & CHEM CORP
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