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HABR technical method and equipment for treating nitrogen-containing organic waste water with medium-low concentration

A low-concentration technology for organic wastewater, applied in the fields of environmental protection and sewage treatment, can solve problems such as the activity of refractory nitrosative bacteria, achieve low operating costs, low dissolved oxygen content, and save aeration costs

Inactive Publication Date: 2016-12-14
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device and method realize an integrated semi-nitrosative anaerobic ammonium oxidation process, but without reflux or sludge discharge of nitrosated sludge, it is difficult to maintain the activity of nitrosated bacteria in the case of long-term operation

Method used

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  • HABR technical method and equipment for treating nitrogen-containing organic waste water with medium-low concentration
  • HABR technical method and equipment for treating nitrogen-containing organic waste water with medium-low concentration

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A certain rural domestic sewage is selected as the medium and low concentration nitrogen-containing organic wastewater to be treated, and the chemical oxygen demand (COD Cr ) Is 100-500 mg / L, total nitrogen (TN) concentration is 20-60 mg / L, suspended particulate matter (SS) concentration is 100-300 mg / L, total phosphorus (TP) concentration is 2-8 mg / L . COD of rural domestic sewage Cr The average value of SS is 314 mg / L, the average of SS concentration is 225 mg / L, the average of TP concentration is 4.6 mg / L, and the average of TN concentration is 37 mg / L.

[0044] 1) Make HABR equipment. HABR reactor length×width×height (mm) = 580×100×255, effective height is 220mm, and effective volume is 12.4 L. The number of anaerobic cells in the first group of reactor is set to 1, and the number of anaerobic cells in the second group is set to 2. The volume of the aerobic cell is 1.3 times that of the anaerobic cell, and the volume of the precipitation cell is 0.6 times that of the...

Embodiment 2

[0054] A certain rural domestic sewage is selected as the medium and low concentration nitrogenous organic wastewater to be treated, and the COD of the sewage is Cr It is 100-500 mg / L, TN concentration is 20-60 mg / L, SS concentration is 100-300 mg / L, and TP concentration is 2-8 mg / L. COD of rural domestic sewage Cr The average value of SS is 279 mg / L, the average of SS concentration is 168 mg / L, the average of TP concentration is 5.4 mg / L, and the average of TN concentration is 43 mg / L.

[0055] Make HABR equipment. HABR reactor length×width×height (mm) = 500×100×255, effective height is 220mm, effective volume is 10.6 L. The number of anaerobic cells in the first group and the number of anaerobic cells in the second group are both set to 1. The volume of the aerobic cell is 1.3 times that of the anaerobic cell, and the volume of the precipitation cell is 0.6 times that of the anaerobic cell. Each hypoxic cell and anaerobic cell are divided into 1:3 lower and upper flow chamber...

Embodiment 3

[0059] The medium and low concentration nitrogen-containing organic wastewater to be treated is the effluent of livestock and poultry breeding wastewater after anaerobic treatment. The COD of the sewage is Cr It is 800-1200 mg / L, TN concentration is 150-300 mg / L, SS concentration is 200-400 mg / L, and TP concentration is 20-60 mg / L. COD of effluent from livestock and poultry breeding wastewater after anaerobic treatment Cr The average value of SS is 964 mg / L, the average of SS concentration is 315 mg / L, the average of TP concentration is 46 mg / L, and the average of TN concentration is 247 mg / L.

[0060] Make HABR equipment. HABR reactor length×width×height (mm) = 740×100×255, effective height is 220mm, effective volume is 16.0 L. The number of anaerobic cells in the first group of reactor is set to 2, and the number of anaerobic cells in the second group is set to 3. The volume of the aerobic cell is 1.3 times that of the anaerobic cell, and the volume of the precipitation cell i...

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Abstract

The invention provides an HABR technical method and equipment for treating nitrogen-containing organic waste water with medium-low concentration. The method for treating the waste water comprises the steps that HABR compartments are inoculated with sludge for starting; the waste water sequentially flows through all the compartments, most of dissolved organic matter is degraded by anaerobic organisms, ammonia nitrogen is partially subjected to nitrosation, then an anaerobic ammonia oxidation occurs, and ammonia nitrogen is removed, or ammonia nitrogen is removed through aerobic nitrosification and anoxic denitrification; reflux is conducted on the sludge or mud and water mixed liquor in the precipitation compartment so as to keep the activity of nitrite bacteria for a long time, the sludge is subjected to reflux when shortcut nitrification-anaerobic ammonia oxidation denitrification is conducted, and the mud and water mixed liquor is subjected to reflux when shortcut nitrification-denitrification is conducted. The equipment achieving the waste water treatment method comprises a water inlet system, an HABR, a reflux system, a bath system and an aeration system. According to the method, the effect on removing organic matter, ammonia nitrogen and suspended particulate matter in the nitrogen-containing organic waste water with the medium-low concentration is good, the occupied area of the equipment is small, and the equipment has the advantages of being flexible in operation and the like.

Description

Technical field [0001] The invention belongs to the field of environmental protection and sewage treatment, and specifically relates to a HABR technical method and equipment for treating medium and low-concentration nitrogen-containing organic wastewater. Background technique [0002] The traditional biological denitrification process is the nitrification-denitrification process, and the core processes such as A / O process, A 2 / O process, oxidation ditch process, SBR process, BAF process, etc., have been widely used in water treatment projects. The nitrification-denitrification denitrification process has some disadvantages, such as slow growth of nitrifying bacteria and difficulty in maintaining a high biological concentration in the reactor, resulting in a long hydraulic retention time, low volumetric load rate, and large capital investment; Carrying out under aerobic conditions requires a lot of energy; the denitrification reaction requires an electron donor, especially for lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/30
CPCC02F3/284C02F3/301C02F3/302
Inventor 王毅力胡玉祺
Owner BEIJING FORESTRY UNIVERSITY
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