CN105347472A - Aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen - Google Patents

Aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen Download PDF

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Publication number
CN105347472A
CN105347472A CN201510775574.0A CN201510775574A CN105347472A CN 105347472 A CN105347472 A CN 105347472A CN 201510775574 A CN201510775574 A CN 201510775574A CN 105347472 A CN105347472 A CN 105347472A
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China
Prior art keywords
nitrogen
high ammonia
ammonia
iron
waste water
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Pending
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CN201510775574.0A
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Chinese (zh)
Inventor
郑丹
邓良伟
宋立
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Biogas Institute of Ministry of Agriculture
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Biogas Institute of Ministry of Agriculture
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Priority to CN201510775574.0A priority Critical patent/CN105347472A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The invention belongs to an aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen, and belongs to the field of sewage treatment. The process comprises the following steps: aerobic or anaerobic sludge used as inoculated sludge is added into an aeration reactor for treating waste water containing high ammonia-nitrogen; zero-valent iron is added into the aeration reactor, the mol ratio between the added zero-valent iron to the ammonia-nitrogen concentration is 2-20:1, pH value of the waste water containing high ammonia-nitrogen is adjusted to 6.5-8.0, the waste water containing high ammonia-nitrogen is kept in the reactor for 0.5-5 days at 20-35 DEG C, and the wastewater reaches the standard and is discharged or enters into a next treatment process. The problem of incomplete nitrogen removal in present anaerobic ammoxidation nitrogen removal process is overcome, the technology defect of long time consuming is overcome, the aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen is totally operated by autotrophy, the nitrogen removal efficiency is high, and the starting time consuming is short.

Description

The aerobic biological denitrification process of high ammonia-nitrogen wastewater
Technical field
The invention belongs to sewage treatment area, be specifically related to a kind of aerobic biological denitrification process of high ammonia-nitrogen wastewater.
Background technology
The bio-denitrification technology of waste water is the important channel of control water body nitrate pollution, is widely applied in the denitrogenation processing of high ammonia-nitrogen wastewater.And in many bio-denitrification technologies, anaerobic ammonia oxidation process becomes current study hotspot in the denitrogenation mode of its uniqueness.The principle of Anammox denitrogenation is: under anaerobism or anoxia condition, anaerobic ammonia oxidizing bacteria using ammonia nitrogen as electron donor, nitrite nitrogen as electron acceptor(EA), directly the two is changed into N 2, be the process of a complete autotrophy.But Anammox reaction has part nitrate nitrogen and generates, and can not realize complete denitrogenation; Meanwhile, there is the problem of substrate inhibition in anaerobic ammonium oxidation process, and anaerobic ammonia oxidizing bacteria is responsive to the nitrite nitrogen of higher concentration; In addition, anaerobic ammonia oxidizing bacteria poor growth, longer when enrichment has a mixed training material consumption of high anaerobic ammoxidation activity, these all become the significant bottleneck of this novel biological dinitrification technology application development of restriction.
Summary of the invention
The object of the invention is to overcome existing Anammox denitrification process and can not realize complete denitrogenation, longer technological deficiency consuming time, for people provide a kind of whole process autotrophic to run, nitric efficiency is high, starts the aerobic biological denitrification process of shorter high ammonia-nitrogen wastewater consuming time.
The object of the invention is to be achieved through the following technical solutions:
The aerobic biological denitrification process of high ammonia-nitrogen wastewater of the present invention joins in the aeration reactor of process high ammonia-nitrogen wastewater using aerobic or anaerobic sludge as seed sludge; It is characterized in that adding Zero-valent Iron in aeration reactor, the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 2 ~ 20 ﹕ 1, and the pH value of adjustment high ammonia-nitrogen wastewater is 6.5 ~ 8.0,20 ~ 35 ounder C, high ammonia-nitrogen wastewater stops 0.5 ~ 5 day in the reactor, then qualified discharge or enter next treatment process.
In such scheme, described Zero-valent Iron be iron powder, Waste iron slag, iron plane flower and iron and steel scrap in one or more.
In such scheme, described seed sludge is one or more in nitrifying sludge, denitrification mud and anaerobic ammonium oxidation sludge.
In such scheme, the ammonia nitrogen concentration of described high ammonia-nitrogen wastewater is 10 ~ 1000mgN/L.
Biological respinse involved in the present invention is:
4Fe+3O 2+ 6H 2o=4Fe (OH) 3(chemical reaction)
3Fe (OH) 3+ 5H ++ NH 4 +→ 3Fe 2++ 9H 2o+0.5N 2(biological respinse, the ammonia oxidation of anaerobism iron)
4Fe (OH) 2+ O 2+ 2H 2o=4Fe (OH) 3(chemical reaction)
That is: in the aerating system of process high ammonia-nitrogen wastewater, Zero-valent Iron (as iron powder, Waste iron slag, iron plane flower, iron and steel scrap etc.) is added, make the dissolved oxygen in Zero-valent Iron and water after series of oxidation reacts, generate Fe (III), when controlling low DO concentration, Fe (III) and the ammonia nitrogen generation anaerobism iron ammonia oxidation biological respinse in waste water, ammonia nitrogen is oxidized to nitrogen and realizes denitrogenation, and Fe (III) is reduced into Fe (II) simultaneously; Fe (II) (in aerating system) when aerobic is very easily oxidized to Fe (III), and then Fe (III) can continue to participate in anaerobism iron ammonia oxidation biological respinse; Circulation like this, Fe (II) hockets with anaerobism iron ammonia oxidation biological respinse with the mutual conversion of Fe (III) in the aerating system processing high ammonia-nitrogen wastewater, achieve ammonia nitrogen in waste water continue remove, finally realize the object of efficient denitrification.
The present invention's seed sludge used is in extensive range, comprises general aerobic or anaerobic sludge, a kind of mud can be selected to inoculate separately or the combined inoculation simultaneously of multiple mud.
Advantage of the present invention is:
1) in a reaction system, simultaneously in conjunction with chemical method and microbial method, two kinds of methods hocket in aerating system, continue the ammonia nitrogen removed in waste water.
2) add Zero-valent Iron (as iron powder, Waste iron slag, iron plane flower, iron and steel scrap etc.) in Waste Water Treatment, the treatment of wastes with processes of wastes against one another, can realize simultaneously ammonia nitrogen pollutant in waste water continue remove and the making full use of of scrap iron;
3) whole system whole process autotrophic runs, reaction product is the molysite of recoverable and environment amenable nitrogen, without other by products, technique environmental protection, all ammonia nitrogens are all converted into nitrogen, overcome the shortcoming of Anammox generating portion nitrate nitrogen, system nitric efficiency is high, achieves complete denitrogenation truly;
4) the reactor start-up time shortens greatly, and can be enriched to the mixed training thing with anaerobism iron ammoxidation activity at short notice, engineering practicability is strong.
The present invention is suitable for processing high ammonia nitrogen organic waste water, is particularly suitable for the organic waste water processing low ratio of carbon to ammonium, high-concentration ammonia-nitrogen, as anaerobic digestion supernatant liquor, percolate, coking chemical waste water, pharmacy waste water, photoelectricity waste water etc.
Therefore, instant invention overcomes existing Anammox denitrification process and can not realize complete denitrogenation, longer technological deficiency consuming time, the aerobic biological denitrification process whole process autotrophic of the high ammonia-nitrogen wastewater provided runs, and nitric efficiency is high, starts consuming time shorter.
Embodiment
Be described in further detail the present invention below by embodiment, but the present invention is not limited only to described embodiment.
Embodiment one
The aerobic biological denitrification process of the high ammonia-nitrogen wastewater of this example adds Zero-valent Iron in the aeration reactor of process high ammonia-nitrogen wastewater, the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 14.3 ﹕ 1, joins in aeration reactor using aerobic or anaerobic sludge as seed sludge; The pH value of adjustment high ammonia-nitrogen wastewater is 7.5,35 ounder C, high ammonia-nitrogen wastewater stops 3 days in the reactor, then enters next treatment process.
Zero-valent Iron is iron powder.Seed sludge is nitrifying sludge.The ammonia nitrogen concentration of high ammonia-nitrogen wastewater is 350mgN/L, and Zero-valent Iron dosage is 20gFe/L, and dissolved oxygen concentration is 0.3 ~ 0.5mg/L.
This example can reach 87.53% to ammonia nitrogen removal frank, and nitrogen removal rate can reach 79.55%, and volume elimination capacity reaches 0.141kgN/ (m 3d).
Embodiment two
In this example, seed sludge is nitrifying sludge, high ammonia-nitrogen wastewater is digested piggery wastewater, ammonia nitrogen concentration is 500mgN/L, and Zero-valent Iron is iron plane flower, and the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 10 ﹕ 1, Zero-valent Iron dosage is 20gFe/L, the pH value of high ammonia-nitrogen wastewater is 7.6, and high ammonia-nitrogen wastewater stops 5 days in the reactor, then qualified discharge.All the other are with embodiment one.
This example can reach 98.47% to ammonia nitrogen removal frank, and nitrogen removal rate can reach 95.26%, and volume elimination capacity reaches 0.259kgN/ (m 3d).
Embodiment three
In this example, seed sludge is nitrifying sludge and anaerobic ammonium oxidation sludge, high ammonia-nitrogen wastewater is digested piggery wastewater, ammonia nitrogen concentration is 400mgN/L, and Zero-valent Iron is iron plane flower, and the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 12.5 ﹕ 1, Zero-valent Iron dosage is 20gFe/L, the pH value of high ammonia-nitrogen wastewater is 7.4, and dissolved oxygen concentration is 0.3 ~ 0.4mg/L, and all the other are with embodiment two.
This example can reach 95.14% to ammonia nitrogen removal frank, and nitrogen removal rate can reach 91.92%, and volume elimination capacity reaches 0.208kgN/ (m 3d).
Embodiment four
In this example, seed sludge is denitrification mud, and Zero-valent Iron is Waste iron slag, and all the other are with embodiment two.
Embodiment five
In this example, the ammonia nitrogen concentration of high ammonia-nitrogen wastewater is 10mgN/L, and the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 20 ﹕ 1, and high ammonia-nitrogen wastewater stops 0.5 day in the reactor, and all the other are with embodiment one.
Embodiment six
In this example, the ammonia nitrogen concentration of high ammonia-nitrogen wastewater is 1000mgN/L, and the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 2 ﹕ 1, and seed sludge is nitrifying sludge and anaerobic ammonium oxidation sludge, and all the other are with embodiment one.
Embodiment seven
In this example, the pH value of the high ammonia-nitrogen wastewater in reactor is 6.5, and in reactor, temperature is 20 oc, all the other are with embodiment one.
Embodiment eight
In this example, the pH value of the high ammonia-nitrogen wastewater in reactor is 8.0, and Zero-valent Iron is iron and steel scrap, and all the other are with embodiment one.
Embodiment nine
In this example, Zero-valent Iron is iron powder and Waste iron slag, and the pH value of the high ammonia-nitrogen wastewater in reactor is 6.8, and in reactor, temperature is 25 oc, all the other are with embodiment one.
Embodiment ten
In this example, Zero-valent Iron is iron powder, Waste iron slag and iron plane flower, and all the other are with embodiment one.

Claims (4)

1. an aerobic biological denitrification process for high ammonia-nitrogen wastewater joins in the aeration reactor of process high ammonia-nitrogen wastewater using aerobic or anaerobic sludge as seed sludge; It is characterized in that adding Zero-valent Iron in aeration reactor, the mol ratio of Zero-valent Iron dosage and ammonia nitrogen concentration is 2 ~ 20 ﹕ 1, and the pH value of adjustment high ammonia-nitrogen wastewater is 6.5 ~ 8.0,20 ~ 35 ounder C, high ammonia-nitrogen wastewater stops 0.5 ~ 5 day in the reactor, then qualified discharge or enter next treatment process.
2. the aerobic biological denitrification process of high ammonia-nitrogen wastewater according to claim 1, it is characterized in that described Zero-valent Iron be iron powder, Waste iron slag, iron plane flower and iron and steel scrap in one or more.
3. the aerobic biological denitrification process of high ammonia-nitrogen wastewater according to claim 1, is characterized in that described seed sludge is one or more in nitrifying sludge, denitrification mud and anaerobic ammonium oxidation sludge.
4. the aerobic biological denitrification process of high ammonia-nitrogen wastewater according to claim 1, is characterized in that the ammonia nitrogen concentration of described high ammonia-nitrogen wastewater is 10 ~ 1000mgN/L.
CN201510775574.0A 2015-11-15 2015-11-15 Aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen Pending CN105347472A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105753154A (en) * 2016-03-21 2016-07-13 广东省微生物研究所 Method for synchronously removing anti-inflammatory agent and ammonia nitrogen on basis of sponge iron-ammonia-oxidizing microorganism system
CN107098540A (en) * 2017-05-27 2017-08-29 中国矿业大学 The high ammonia nitrogen Denitrification of Coking Wastewater membrane processing method of short distance nitration Anammox
CN107129035A (en) * 2017-07-07 2017-09-05 陕西省环境科学研究院 A kind of method that utilization anaerobic sludge inoculation starts aerobic reactor
CN108557994A (en) * 2017-12-28 2018-09-21 北京协同创新研究院 A method of processing ammonia nitrogen waste water
CN109734187A (en) * 2019-03-18 2019-05-10 大连交通大学 Multistage combined domestic sewage purification system
CN113371820A (en) * 2021-07-06 2021-09-10 浙江工业大学 Nitrogen and phosphorus removal device and method by coupling iron-carbon microelectrolysis with endogenous denitrification/anaerobic ammonia oxidation
CN114212881A (en) * 2021-12-16 2022-03-22 北京工业大学 Process and device for enhancing synchronous phosphorus recovery of shortcut denitrification anaerobic ammonium oxidation denitrification
CN114409101A (en) * 2022-03-31 2022-04-29 北京林业大学 Nitrogen and phosphorus removal sewage treatment system and method based on iron reduction and oxidation circulation
CN117566920A (en) * 2023-08-21 2024-02-20 中国电建集团华东勘测设计研究院有限公司 Sewage treatment method for promoting anaerobic iron ammoxidation process by bacillus paramycoides

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103387289A (en) * 2013-08-08 2013-11-13 广东省微生物研究所 Method for strengthening azo dye biodegradation by utilizing zero-valent iron
CN104193002A (en) * 2014-09-24 2014-12-10 山东大学 Method for efficiently treating nitrogen-containing wastewater based on zero-valent iron coupled anaerobic ammonia oxidation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103387289A (en) * 2013-08-08 2013-11-13 广东省微生物研究所 Method for strengthening azo dye biodegradation by utilizing zero-valent iron
CN104193002A (en) * 2014-09-24 2014-12-10 山东大学 Method for efficiently treating nitrogen-containing wastewater based on zero-valent iron coupled anaerobic ammonia oxidation

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105753154A (en) * 2016-03-21 2016-07-13 广东省微生物研究所 Method for synchronously removing anti-inflammatory agent and ammonia nitrogen on basis of sponge iron-ammonia-oxidizing microorganism system
CN105753154B (en) * 2016-03-21 2018-05-15 广东省微生物研究所 A kind of method that anti-inflammatory agent and ammonia nitrogen are removed based on sponge iron-ammonia oxidation microbiological system synchronization
CN107098540A (en) * 2017-05-27 2017-08-29 中国矿业大学 The high ammonia nitrogen Denitrification of Coking Wastewater membrane processing method of short distance nitration Anammox
CN107098540B (en) * 2017-05-27 2018-06-12 中国矿业大学 The high ammonia nitrogen Denitrification of Coking Wastewater membrane processing method of short distance nitration-anaerobic ammoxidation
CN107129035A (en) * 2017-07-07 2017-09-05 陕西省环境科学研究院 A kind of method that utilization anaerobic sludge inoculation starts aerobic reactor
CN108557994A (en) * 2017-12-28 2018-09-21 北京协同创新研究院 A method of processing ammonia nitrogen waste water
CN109734187A (en) * 2019-03-18 2019-05-10 大连交通大学 Multistage combined domestic sewage purification system
CN113371820A (en) * 2021-07-06 2021-09-10 浙江工业大学 Nitrogen and phosphorus removal device and method by coupling iron-carbon microelectrolysis with endogenous denitrification/anaerobic ammonia oxidation
CN114212881A (en) * 2021-12-16 2022-03-22 北京工业大学 Process and device for enhancing synchronous phosphorus recovery of shortcut denitrification anaerobic ammonium oxidation denitrification
CN114212881B (en) * 2021-12-16 2023-11-21 北京工业大学 Process and device for strengthening synchronous phosphorus recovery of short-cut denitrification anaerobic ammonia oxidation denitrification
CN114409101A (en) * 2022-03-31 2022-04-29 北京林业大学 Nitrogen and phosphorus removal sewage treatment system and method based on iron reduction and oxidation circulation
CN117566920A (en) * 2023-08-21 2024-02-20 中国电建集团华东勘测设计研究院有限公司 Sewage treatment method for promoting anaerobic iron ammoxidation process by bacillus paramycoides
CN117566920B (en) * 2023-08-21 2024-04-30 中国电建集团华东勘测设计研究院有限公司 Sewage treatment method for promoting anaerobic iron ammoxidation process by bacillus paramycoides

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