CN103265121B - Method for starting half short-cut nitrification technology - Google Patents
Method for starting half short-cut nitrification technology Download PDFInfo
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- CN103265121B CN103265121B CN201310174772.2A CN201310174772A CN103265121B CN 103265121 B CN103265121 B CN 103265121B CN 201310174772 A CN201310174772 A CN 201310174772A CN 103265121 B CN103265121 B CN 103265121B
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- 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 discloses a method for starting a half short-cut nitrification technology, which comprises the following steps of: inoculating aerobic active sludge into an aerobic reactor, wherein the ammonia-containing wastewater is the fed water of the reactor, the ammonia nitrogen concentration of the initial fed water is 70-84mg/L, the water temperature of the reactor is kept at 30-35 DEG C, the concentration of the dissolved oxygen is 3.0-4.0mg/L, the hydraulic retention time is 20-24 hours, and the mass ratio of the alkalinity to the ammonia nitrogen of the fed water is 7.14:1; when the ammonia nitrogen conversion rate is greater than 80%, gradually increasing the ammonia nitrogen concentration of the fed water to 1,218-1,442mg/L to realize the enrichment culture of nitrification flora; when the nitrite accumulation rate of the yielding water is not less than 90%, maintaining the water temperature of the reactor at 30-35 DEG C, keeping hydraulic retention for 20-24 hours, adjusting the mass ratio of the alkalinity to the ammonia nitrogen of the fed water to 3.57:1, and reducing the concentration of the dissolved oxygen to 1.2-2.4mg/L; and when the molar ratio of nitrite nitrogen to ammonia nitrogen in the yielding water is (1.0-1.32):1, realizing the start of the half short-cut nitrification technology. The method disclosed by the invention can solve the problem of slow enrichment of ammonia oxidation bacteria; and the started half short-cut nitrification technology operates stably and is suitable for the pretreatment of an anaerobic ammonia oxidation technology.
Description
(1) technical field
The present invention relates to a kind of starting method of half short distance nitration technique.
(2) background technology
Anammox is a kind of Process of Biological Nitrogen Removal, can under anaerobic take ammonia as electron donor is reduced to nitrogen by nitrite, when realizing two kinds of nitrogen pollutants, removes.Than traditional biological denitrification process, it is good that Anammox has denitrification effect, and without oxygen and additional organic carbon source, the advantage such as excess sludge production is few, and running cost is low, has good prospects for commercial application.Yet general ammonia-containing water nitrite is lower, the source of nitrite becomes the bottleneck of restriction Anammox advantage performance thus.Half short distance nitration can change into nitrite by 50～57% ammonia, can meet the demand of anaerobic ammonia oxidizing bacteria to matrix.Yet, directly start half short distance nitration, because high free ammonia and free nitrous acid have potential restraining effect for ammonia oxidation bacteria, in addition in conventional seed sludge, ammonia oxidation bacteria abundance is lower, the enrichment culture that is unfavorable for ammonia oxidation bacteria, makes often lower and difficult steady in a long-term control of mineralized nitrogen load.
For these problems, the present invention proposes a kind of starting method of half short distance nitration technique, keep the gentle hydraulic detention time of reactor water constant, under complete nitrification condition, increase gradually influent ammonium concentration, Sync enrichment ammonia oxidation bacteria and NOB, along with the increase of ammonia nitrogen loading, ammonia oxidation bacteria becomes dominant microflora gradually, then basicity reduces by half and reduces dissolved oxygen concentration in reactor simultaneously, successfully starts half short distance nitration technique.
(3) summary of the invention
The object of the invention is to provide a kind of starting method of half short distance nitration technique, when providing suitable water inlet matrix for anaerobic ammonia oxidation process, solves ammonoxidation bacterium concentrating problem slowly.
The technical solution used in the present invention is:
The invention provides a kind of starting method of half short distance nitration technique, described method is carried out as follows: aerobic activated sludge is seeded in aerobic reactor, take ammonia-containing water as reactor water inlet, initial influent ammonium concentration is 70～84mg/L, maintaining reactor water temperature is 30～35 ℃, dissolved oxygen concentration is 3.0～4.0mg/L, hydraulic detention time is 20～24h, influent alkalinity and ammonia nitrogen mass ratio are 7.14:1, when mineralized nitrogen rate is greater than 80%, increase gradually influent ammonium concentration to 1218～1442mg/L, realize the enrichment culture of nitrifying bacteria community; When water outlet nitrite accumulation rate is not less than 90%, maintaining reactor water temperature is 30～35 ℃, hydraulic detention time is 20～24h, adjusting influent alkalinity and ammonia nitrogen mass ratio is 3.57:1, reduce dissolved oxygen concentration to 1.2～2.4mg/L, when nitrite nitrogen and ammonia nitrogen mol ratio are 1.0～1.32:1 in water outlet, realize the startup of half short distance nitration technique.
Further, the inoculum size of described aerobic activated sludge is counted 10～15g/L with aerobic reactor useful volume.
Further, the described method that increases gradually influent ammonium concentration to 1218～1442mg/L is: when influent ammonium concentration is during lower than 700mg/L, influent ammonia nitrogen increasing degree is 28～42mg/L; When influent ammonium concentration is more than or equal to 700mg/L, influent ammonia nitrogen increasing degree is 42～56mg/L.
Further, described influent alkalinity is adjusted by adding sodium bicarbonate, sodium hydroxide or sodium carbonate.
Compared with prior art, the method for the invention is first to pass through the abundant ammonia oxidation bacteria of complete nitrification enrichment, and then regulation and control parameter realizes half short distance nitration; If directly carry out half short distance nitration regulation and control after seed sludge, because high free ammonia and free nitrous acid exist restraining effect for ammonia oxidation bacteria, ammonia oxidation bacteria is difficult for enrichment propagation.Beneficial effect of the present invention is mainly reflected in: the method for the invention can realize the enrichment of ammonia oxidation bacteria within a short period of time, solves ammonoxidation bacterium concentrating problem slowly; The half short distance nitration technique that the method for the invention starts has higher mineralized nitrogen load, can process preferably high-concentration ammonia nitrogenous wastewater; The half short distance nitration process operation that the method for the invention starts is stable, is applicable to the pre-treatment of anaerobic ammonia oxidation process.
(4) accompanying drawing explanation
Fig. 1: gas stripping type common loop reactor structural representation.
(1) gas stripping type common loop reactor body, (2) air compressor, (3) air flowmeter, (4) micropore gas sparger, (5) peristaltic pump, (6) up-flow district.
(5) embodiment
Below in conjunction with specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in this:
Embodiment 1:
With reference to Fig. 1, adopt gas stripping type common loop reactor body 1 bottom to be provided with inlet mouth and water-in, air passes through air compressor 2 by air flowmeter 3 coutroi velocities, through micropore gas sparger 4, introduce reactor bottom, ammonia nitrogen waste water pumps into up-flow district 6 by peristaltic pump 5 from bottom water-in, the concrete steps that half short distance nitration technique starts are as follows: first aerobic activated sludge is seeded in the gas stripping type common loop reactor that useful volume is 3.8L, seed sludge concentration is 10g/L, take containing ammonia simulated wastewater (ammonia nitrogen initial concentration is 70mg/L) is reactor water inlet, maintaining reactor water temperature is 30 ℃, in reactor, dissolved oxygen concentration is 3.0mg/L, hydraulic detention time is 20h, in water inlet, basicity and ammonia nitrogen mass ratio are 7.14:1, Real-Time Monitoring water outlet ammonia nitrogen concentration, when being greater than 80%, mineralized nitrogen rate increases influent ammonium concentration, the method of described increase influent ammonium concentration is: influent ammonium concentration during lower than 700mg/L increasing degree be 28mg/L, when influent ammonium concentration is more than or equal to 700mg/L, increasing degree is 42mg/L, until influent ammonium concentration increases to 1218mg/L, realizes the enrichment culture of nitrifying bacteria community, when water outlet nitrite accumulation rate is greater than 90%, maintaining reactor water temperature is 30 ℃, hydraulic detention time is 20h, and adjusting influent alkalinity and ammonia nitrogen mass ratio is 3.57:1, and adjustment dissolved oxygen concentration is 1.2mg/L, operation through 7d left and right, water outlet nitrite nitrogen and ammonia nitrogen mol ratio are 1.15 ± 0.06, and nitrite accumulation rate is 98.1 ± 1.6%, and water outlet nitrate is lower than 26.1mg/L, meet the requirement of anaerobic ammonia oxidation process to influent quality, half short distance nitration technique starts successfully.
Consisting of containing ammonia simulated wastewater: NaHCO described in the present embodiment
30.84～14.62g/L; (NH
4)
2sO
40.33～5.74g/L; KH
2pO
40.027g/L; MgSO
47H
2o0.300g/L; CaCl
20.136g/L; Trace element I, II: 1.25mL/L; Wherein, trace element solution I: EDTA5.000g/L, FeSO
47H
2o9.14g/L; Trace element solution II: EDTA15.000g/L, H
3bO
40.014g/L, ZnSO
47H
2o0.430g/L, MnCl
24H
2o0.990g/L, CuSO
45H
2o0.250g/L, NaMoO
42H
2o0.220g/L, NiCl
26H
2o0.210g/L, CoCl
26H
2o0.240g/L.
Embodiment 2:
With reference to Fig. 1, this embodiment adopts the reactor assembly identical with embodiment 1.The concrete steps that half short distance nitration technique starts are as follows: first aerobic activated sludge is seeded in the gas stripping type common loop reactor that useful volume is 3.8L, seed sludge concentration is 15g/L, take containing ammonia simulated wastewater (ammonia nitrogen initial concentration is 84mg/L) is reactor water inlet, maintaining reactor water temperature is 35 ℃, in reactor, dissolved oxygen concentration is 4.0mg/L, hydraulic detention time is 24h, in water inlet, basicity and ammonia nitrogen mass ratio are 7.14:1, Real-Time Monitoring water outlet ammonia nitrogen concentration increases influent ammonium concentration when mineralized nitrogen rate is greater than 80%; The method of described increase influent ammonium concentration is: influent ammonium concentration during lower than 700mg/L increasing degree be 42mg/L; When influent ammonium concentration is more than or equal to 700mg/L, increasing degree is 56mg/L, until influent ammonium concentration increases to 1442mg/L, realizes the enrichment culture of nitrifying bacteria community; When water outlet nitrite accumulation rate is greater than 90%, maintaining reactor water temperature is 35 ℃, hydraulic detention time is 24h, and adjusting influent alkalinity and ammonia nitrogen mass ratio is 3.57:1, and adjustment dissolved oxygen concentration is 2.4mg/L, operation through 10d left and right, water outlet nitrite nitrogen and ammonia nitrogen mol ratio are 1.20 ± 0.11, and nitrite accumulation rate is 95.3 ± 1.2%, and water outlet nitrate is lower than 10.4mg/L, meet the requirement of anaerobic ammonia oxidation process to influent quality, half short distance nitration technique starts successfully.
Consisting of containing ammonia simulated wastewater: Na described in the present embodiment
2cO
30.64～10.92g/L; (NH
4)
2sO
40.40～6.80g/L; KH
2pO
40.027g/L; MgSO
47H
2o0.300g/L; CaCl
20.136g/L; Trace element I, II: 1.25mL/L; Wherein, trace element solution I: EDTA5.000g/L, FeSO
47H
2o9.14g/L; Trace element solution II: EDTA15.000g/L, H
3bO
40.014g/L, ZnSO
47H
2o0.430g/L, MnCl
24H
2o0.990g/L, CuSO
45H
2o0.250g/L, NaMoO
42H
2o0.220g/L, NiCl
26H
2o0.210g/L, CoCl
26H
2o0.240g/L.
Content described in this specification sheets embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the specific form that embodiment states, protection scope of the present invention also and in those skilled in the art, according to the present invention, conceive the equivalent technologies means that can expect.
Claims (4)
1. the starting method of one and half short distance nitration techniques, method described in it is characterized in that is carried out as follows: aerobic activated sludge is seeded in aerobic reactor, take ammonia-containing water as reactor water inlet, initial influent ammonium concentration is 70～84mg/L, maintaining reactor water temperature is 30～35 ℃, dissolved oxygen concentration is 3.0～4.0mg/L, hydraulic detention time is 20～24h, influent alkalinity and ammonia nitrogen mass ratio are 7.14:1, when mineralized nitrogen rate is greater than 80%, increase gradually influent ammonium concentration to 1218～1442mg/L, realize the enrichment culture of nitrifying bacteria community; When water outlet nitrite accumulation rate is not less than 90%, maintaining reactor water temperature is 30～35 ℃, hydraulic detention time is 20～24h, adjusting influent alkalinity and ammonia nitrogen mass ratio is 3.57:1, reduce dissolved oxygen concentration to 1.2～2.4mg/L, when nitrite nitrogen and ammonia nitrogen mol ratio are 1.0～1.32:1 in water outlet, realize the startup of half short distance nitration technique.
2. the starting method of half short distance nitration technique as claimed in claim 1, is characterized in that: the inoculum size of described aerobic activated sludge is counted 10～15g/L with aerobic reactor useful volume.
3. the starting method of half short distance nitration technique as claimed in claim 1, it is characterized in that: the described method that increases gradually influent ammonium concentration to 1218～1442mg/L is: when influent ammonium concentration is during lower than 700mg/L, influent ammonia nitrogen increasing degree is 28～42mg/L; When influent ammonium concentration is more than or equal to 700mg/L, influent ammonia nitrogen increasing degree is 42～56mg/L.
4. the starting method of half short distance nitration technique as claimed in claim 1, is characterized in that: described influent alkalinity is adjusted by adding sodium bicarbonate, sodium hydroxide or sodium carbonate.
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| CN103435166B (en) * | 2013-09-03 | 2015-01-14 | 北京工业大学 | Method for quickly improving enrichment rate and degree of ammonia-oxidizing bacteria (AOB) in sequencing batch reactor (SBR) |
| CN107986434B (en) * | 2017-12-19 | 2020-02-14 | 江南大学 | Kitchen anaerobic wastewater semi-shortcut nitrification reactor and semi-shortcut nitrification starting method |
| CN108483655B (en) * | 2018-05-31 | 2021-07-30 | 中山大学 | Method for deep denitrification by coupling shortcut nitrification and denitrification with anaerobic ammonia oxidation and sulfur autotrophic denitrification |
| CN111547853B (en) * | 2020-05-22 | 2021-02-02 | 广西春晖环保工程有限责任公司 | Denitrification process of double shortcut nitrification-anaerobic ammonia oxidation |
| CN113003705A (en) * | 2021-04-01 | 2021-06-22 | 桂林理工大学 | Filler type biological rotating disc and method for converting ammonia nitrogen based on filler type biological rotating disc |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005211832A (en) * | 2004-01-30 | 2005-08-11 | Nippon Steel Corp | Method for removing ammonia nitrogen from waste water |
| JP2006122771A (en) * | 2004-10-27 | 2006-05-18 | Chuden Kankyo Technos Co Ltd | Fluid treatment method and fluid treatment system |
| CN101638267A (en) * | 2008-08-02 | 2010-02-03 | 中国石油化工股份有限公司 | Method for quickly starting shortcut nitrification of ammonia-containing wastewater |
| CN102259976A (en) * | 2011-05-23 | 2011-11-30 | 杭州师范大学 | Method for quickly starting anaerobic ammonia oxidation reactor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005211832A (en) * | 2004-01-30 | 2005-08-11 | Nippon Steel Corp | Method for removing ammonia nitrogen from waste water |
| JP2006122771A (en) * | 2004-10-27 | 2006-05-18 | Chuden Kankyo Technos Co Ltd | Fluid treatment method and fluid treatment system |
| CN101638267A (en) * | 2008-08-02 | 2010-02-03 | 中国石油化工股份有限公司 | Method for quickly starting shortcut nitrification of ammonia-containing wastewater |
| CN102259976A (en) * | 2011-05-23 | 2011-11-30 | 杭州师范大学 | Method for quickly starting anaerobic ammonia oxidation reactor |
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