CN112358042A - Culture method of wastewater treatment denitrification granular sludge - Google Patents
Culture method of wastewater treatment denitrification granular sludge Download PDFInfo
- Publication number
- CN112358042A CN112358042A CN202010974480.7A CN202010974480A CN112358042A CN 112358042 A CN112358042 A CN 112358042A CN 202010974480 A CN202010974480 A CN 202010974480A CN 112358042 A CN112358042 A CN 112358042A
- Authority
- CN
- China
- Prior art keywords
- granular sludge
- concentration
- denitrification
- cod
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- C02F3/28—Anaerobic digestion processes
-
- 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
- C02F2101/163—Nitrates
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a culture method of denitrification denitrogenation granular sludge for wastewater treatment, which comprises the steps of firstly inoculating denitrification flocculent sludge domesticated in a sewage treatment plant into a denitrification denitrogenation granular sludge reactor, taking simulated wastewater as inlet water, and controlling COD concentration and NO3 ‑Concentration ratio of N, culture under anaerobic conditions with monitoring of NO3 ‑Water out of-N in the presence of NO3 ‑Under the premise that the-N removal rate is more than 80 percent, the COD and NO in the inlet water are continuously increased3 ‑N concentration up to COD, NO3 ‑When the concentration of-N reaches a certain value, waiting for NO3 ‑When the removal rate of-N reaches more than 90 percent, the residence time of the reactor is adjusted until NO in effluent is discharged3 ‑The removal rate of-N reaches more than 95 percent, and the denitrification granular sludge for wastewater treatment is obtained. The denitrification denitrogenation granular sludge cultured by the inventionHas the advantages of good sedimentation performance, high biological concentration, low operation cost and energy consumption, high impact load resistance, strong antitoxic action and the like, reduces the operation cost and the energy consumption of the reactor, and the cultured granular sludge can be used for treating high COD and high NO3 ‑-N waste water.
Description
Technical Field
The invention belongs to a culture method of granular sludge, and particularly relates to a culture method of denitrification and denitrogenation granular sludge for wastewater treatment.
Background
The feasibility and the economical efficiency of biological denitrification are superior to those of other processes, and the key of the biological denitrification lies in denitrification. The denitrification process is a process that denitrifying bacteria reduce nitrogen in nitrate into nitrogen through a series of intermediate products. When organic wastewater contains COD and nitrate nitrogen with higher concentration, flocculent denitrification sludge is gradually granulated when the wastewater is treated in a constant temperature and anaerobic mode. The traditional denitrification sludge denitrification has the problems of low denitrification efficiency, high energy consumption and the like, compared with the traditional denitrification flocculent sludge denitrification, the culture of the denitrification granular sludge can effectively remove COD (chemical oxygen demand) and nitrate nitrogen in organic wastewater, the granular sludge has the advantages of good sedimentation performance, high biological concentration, low operation cost and energy consumption, high impact load resistance, strong anti-toxicity effect and the like, and the cost of land occupation area, medicament use, power consumption, sludge disposal and the like can be saved. The culture of the denitrification granular sludge brings more benefits, and the culture of the denitrification granular sludge also becomes the key point of attention of people.
Disclosure of Invention
The invention aims to provide a culture method of wastewater treatment denitrification granular sludge, which effectively promotes the formation of the wastewater treatment denitrification granular sludge through a denitrification granular sludge reactor and obtains the denitrification granular sludge through controlling test parameters.
The technical scheme of the invention is as follows: the method comprises the steps of taking denitrification flocculent sludge domesticated in a sewage treatment plant as inoculation sludge, inoculating the inoculation sludge into a denitrification granular sludge reactor, taking simulated wastewater as inflow water, and simulating wastewater NO3 -The initial value of N is 1,000-1,500 mg/L, the initial value of COD is 4,000-7,500 mg/L, the COD concentration and NO are controlled3 -A ratio of-N concentration of 4 to 5 to 1, culturing under anaerobic conditions while monitoring NO3 -Water out of-N in the presence of NO3 -Under the premise that the-N removal rate is more than 80 percent, the COD and NO in the inlet water are continuously increased3 -N concentration until NO3 -Increasing the N concentration to 2,000-3,000 mg/L and the COD concentration to 8,000-1,5000 mg/L, wherein NO is present3 --a decrease in the removal rate of N; stopping increasing COD and NO in the feed water3 -After concentration of-N, NO3 -Increasing concentration of-N to NO3 -When the N removal rate is increased to more than 90 percent, the residence time of the reactor is adjusted to 50 to 100 percent of the original residence time; to discharge NO3 —The removal rate of N reaches more than 95 percent, and the denitrification granular sludge for wastewater treatment is obtained.
Preferably, said NO3 -The initial value of-N was 1,000mg/L and the initial value of COD was 4,000 mg/L.
Preferably, the ratio of COD concentration to NO3- -N concentration is 4 to 1.
Preferably, the COD and NO 3-N concentration in the feed water is continuously increased after the operating time of keeping the NO 3-N removal rate above 80% for at least 5 days and keeping the NO 3-N removal rate in the reactor stable above 80%.
Preferably, the culture temperature of the reactor is 30 +/-2 ℃, the pH value is 3.5-6.5, and the hydraulic retention time is 1-2 d.
Preferably, the culture temperature of the reactor is 30 ℃, the pH value is 3.5, and the hydraulic retention time is 1 d.
Preferably, the residence time of the reactor is adjusted to 50% of the original residence time.
Preferably, the simulated wastewater comprises COD and NO3 --N, phosphate and trace elements Mn, Co, Cu, Zn, Ni, Mo, Se.
The invention adopts the technology of wastewater treatment denitrification granular sludge to rapidly culture the wastewater treatment denitrification granular sludge with good settling property, high biological concentration, large particle size, high impact load resistance and strong antitoxic effect, thereby effectively solving the problem of biological toxicity inhibition of high-toxicity pollution factors to microorganisms, having high biological treatment load, high removal efficiency, stable system work, good treatment effect, floor area saving, and operation cost and energy consumption reduction. Compared with the prior art, the invention effectively promotes the formation of the denitrification denitrogenation granular sludge by utilizing the wastewater treatment denitrification denitrogenation granular sludge reactor, the obtained granular sludge has high activity, stable performance, good settling property, high biological concentration, high impact load resistance and strong toxicity resistance, can effectively treat the wastewater containing high-concentration nitrate nitrogen, ensures the high-load treatment capacity, stability and treatment capacity of the wastewater treatment denitrification denitrogenation granular sludge reactor, and reduces the wastewater treatment cost.
Drawings
FIG. 1 shows COD and NO in the granular sludge culture process of the present invention3 --N removal effect map;
FIG. 2 is an appearance diagram of a denitrification granular sludge.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of applicability of the invention is not limited thereto:
example 1:
a denitrification granular sludge reactor (effective volume is 16L) is adopted for carrying out a denitrification granular sludge culture test, denitrification flocculent sludge domesticated in a sewage treatment plant is inoculated into the denitrification granular sludge reactor, simulated wastewater is taken as inlet water, the sludge concentration of the inoculated reactor is 5.0g/L, and NO of the simulated wastewater is3 -Initial value of-N is 1,000mg/L, initial value of COD is 4,000mg/L, COD concentration and NO are controlled3 -A ratio of-N concentration of4 to 1, culture under anaerobic conditions protected from light while monitoring NO3 -The effluent condition of N, the culture temperature of the reactor is 32 ℃, the pH value is 3.5, the hydraulic retention time is 1d, and the simulated wastewater comprises COD and NO3 --N, phosphate and trace elements Mn, Co, Cu, Zn, Ni, Mo, Se.
In the maintenance of NO3 -The removal rate of-N is more than 80%, and COD and NO in the inlet water are continuously increased on the premise of stable operation for 5d3 -N concentration until NO3 -N concentration of 2,000mg/L and COD concentration of 8,000mg/L until NO is obtained3 -When the N removal rate reaches more than 90%, the reactor residence time is adjusted to 50% of the original residence time, namely 0.5 d.
After 60 days of continuous operation, the flocculent sludge in the reactor forms obvious granular sludge, NO in the test process3 -The removal rate of-N is 98.3 +/-1.5%, the form of the denitrification denitrogenation granular sludge is smooth-surfaced and grey-brown granular sludge, and the average grain diameter of the granular sludge is 3.0 mm.
Example 2:
a denitrification granular sludge reactor (effective volume is 16L) is adopted for carrying out a denitrification granular sludge culture test, denitrification flocculent sludge domesticated in a sewage treatment plant is inoculated into the denitrification granular sludge reactor, simulated wastewater is taken as inlet water, the sludge concentration of the inoculated reactor is 5.0g/L, and NO of the simulated wastewater is3 -Initial value of N is 1,500mg/L, initial value of COD is 7,500mg/L, COD concentration and NO are controlled3 -A ratio of-N concentration of 5, culturing under anaerobic conditions protected from light while monitoring NO3 -The effluent condition of N, the culture temperature of the reactor is 28 ℃, the pH value is 6.5, the hydraulic retention time is 2d, and the simulated wastewater comprises COD and NO3 --N, phosphate and trace elements Mn, Co, Cu, Zn, Ni, Mo, Se.
In the maintenance of NO3 -the-N removal rate is more than 80%, and COD and NO in the inlet water are continuously increased on the premise of stable operation for 8d3 -N concentration until NO3 -N concentration up to 3,000mg/L and COD concentration up to 1,5000mg/L until NO3 -When the N removal rate reaches more than 90%, the reactor residence time is adjusted to 100% of the original residence time, i.e. 2 d.
After 60 days of continuous operation, the flocculent sludge in the reactor forms obvious granular sludge, NO in the test process3 -the-N is 95.3 +/-2.0 percent, the denitrification denitrogenation granular sludge is in a form of smooth-surface and grey-brown granular sludge, and the average grain diameter of the granular sludge is 2.5 mm.
The denitrification sludge obtained by the method can be used for purifying sewage in wastewater containing high-concentration organic matters and nitrate nitrogen, the COD concentration of the sewage is 8,000mg/L, and NO is3 -The concentration of N is 1,000mg/L, the denitrification denitrogenation granular sludge is thrown into the wastewater, after the sewage treatment is carried out under the anaerobic condition, the COD concentration in the wastewater is 260mg/L, NO is added3 -The concentration of-N was 6 mg/L.
Test results prove that the method can culture the denitrification denitrogenation granular sludge in a short time, the obtained granular sludge has high activity, stable performance, good sedimentation performance, high biological concentration, high impact load resistance and strong toxicity resistance, and can effectively remove COD and NO in the wastewater3 -N, improving the stability of the reactor.
Claims (8)
1. A culture method of denitrification denitrified granular sludge is characterized by comprising the following steps:
the method comprises the steps of taking denitrification flocculent sludge domesticated in a sewage treatment plant as inoculation sludge, inoculating the inoculation sludge into a denitrification granular sludge reactor, taking simulated wastewater as inflow water, and simulating wastewater NO3 -The initial value of N is 1,000-1,500 mg/L, the initial value of COD is 4,000-7,500 mg/L, the COD concentration and NO are controlled3 -A ratio of-N concentration of 4 to 5 to 1, culturing under anaerobic conditions while monitoring NO3 -Water out of-N in the presence of NO3 -Under the premise that the-N removal rate is more than 80 percent, the COD and NO in the inlet water are continuously increased3 -N concentration until NO3 --N is concentratedThe degree reaches 2,000mg/L, and the COD concentration reaches 8,000 mg/L; to NO3 -When the N removal rate reaches more than 90 percent, the residence time of the reactor is adjusted to 50 to 100 percent of the original residence time; to discharge NO3 -The removal rate of-N reaches more than 95 percent, and the denitrification granular sludge for wastewater treatment is obtained.
2. The method of culturing denitrifying granular sludge according to claim 1, wherein said NO is3 -The initial value of-N was 1,000mg/L and the initial value of COD was 4,000 mg/L.
3. The method of culturing denitrification nitrogen removal granular sludge according to claim 1, wherein the COD concentration and NO concentration are in accordance with the3 -The ratio of-N concentration is 4 to 1.
4. The method of culturing denitrifying granular sludge according to claim 1, wherein said NO is retained3 --N removal rate of more than 80% for at least 5d of operation time.
5. The method for culturing denitrifying granular sludge according to claim 1, wherein the temperature of the culture is 30 ± 2 ℃, the pH value is 3.5 to 6.5, and the hydraulic retention time is 1 to 2 d.
6. The method for culturing denitrifying granular sludge according to claim 5, wherein the temperature of said culture is 30 ℃, the pH is 3.5, and the hydraulic retention time is 1 d.
7. The method of culturing denitrifying granular sludge according to claim 1, wherein the residence time of the reactor is adjusted to 50% of the original residence time.
8. The method of culturing denitrification nitrogen removal granular sludge according to claim 1, wherein the simulated wastewater comprises COD and NO3 --N, phosphate and trace elements Mn, Co, Cu, Zn, Ni, Mo, Se.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974480.7A CN112358042B (en) | 2020-09-16 | 2020-09-16 | Culture method of wastewater treatment denitrification denitrogenation granular sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974480.7A CN112358042B (en) | 2020-09-16 | 2020-09-16 | Culture method of wastewater treatment denitrification denitrogenation granular sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112358042A true CN112358042A (en) | 2021-02-12 |
| CN112358042B CN112358042B (en) | 2023-02-28 |
Family
ID=74516605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010974480.7A Active CN112358042B (en) | 2020-09-16 | 2020-09-16 | Culture method of wastewater treatment denitrification denitrogenation granular sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112358042B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611424A (en) * | 2022-11-10 | 2023-01-17 | 浙江环科环境研究院有限公司 | Method for treating stainless steel pickling high-nitrate nitrogen wastewater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663725A (en) * | 2013-12-05 | 2014-03-26 | 北京交通大学 | Continuous flow biological denitrification method based on granular sludge, and apparatus |
| CN104445603A (en) * | 2013-09-16 | 2015-03-25 | 中国石油化工股份有限公司 | Method for rapidly starting up-flow reactor through denitrification |
| CN105540834A (en) * | 2015-12-29 | 2016-05-04 | 杭州师范大学 | Culture method of anaerobic denitrification granular sludge |
| CN107364962A (en) * | 2017-06-15 | 2017-11-21 | 华南理工大学 | A kind of method for strengthening anaerobism while denitrification methane phase granule sludge stability |
| CN108117158A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of fast culture process of nitrogen removal granule sludge |
| CN111422993A (en) * | 2020-03-12 | 2020-07-17 | 广东工业大学 | Method for rapidly starting autotrophic ammonia oxidation by using heterotrophic denitrification granular sludge |
-
2020
- 2020-09-16 CN CN202010974480.7A patent/CN112358042B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104445603A (en) * | 2013-09-16 | 2015-03-25 | 中国石油化工股份有限公司 | Method for rapidly starting up-flow reactor through denitrification |
| CN103663725A (en) * | 2013-12-05 | 2014-03-26 | 北京交通大学 | Continuous flow biological denitrification method based on granular sludge, and apparatus |
| CN105540834A (en) * | 2015-12-29 | 2016-05-04 | 杭州师范大学 | Culture method of anaerobic denitrification granular sludge |
| CN108117158A (en) * | 2016-11-29 | 2018-06-05 | 中国石油化工股份有限公司 | A kind of fast culture process of nitrogen removal granule sludge |
| CN107364962A (en) * | 2017-06-15 | 2017-11-21 | 华南理工大学 | A kind of method for strengthening anaerobism while denitrification methane phase granule sludge stability |
| CN111422993A (en) * | 2020-03-12 | 2020-07-17 | 广东工业大学 | Method for rapidly starting autotrophic ammonia oxidation by using heterotrophic denitrification granular sludge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611424A (en) * | 2022-11-10 | 2023-01-17 | 浙江环科环境研究院有限公司 | Method for treating stainless steel pickling high-nitrate nitrogen wastewater |
| CN115611424B (en) * | 2022-11-10 | 2023-12-12 | 浙江环科环境研究院有限公司 | Method for treating stainless steel pickling high nitrate nitrogen wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112358042B (en) | 2023-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104961306B (en) | A kind of processing method of vaccary breeding wastewater | |
| CN101244883B (en) | High-efficiency low-consumption retexture method for urban sewage | |
| CN101830558B (en) | Method for cultivating anaerobic ammonium oxidation granular sludge | |
| CN108996808B (en) | Biochemical combined treatment process and equipment for degradation-resistant concentrated water in steel industry | |
| CN100503470C (en) | Control method and device of A2/O oxidation trench technology synchronous nitration and denitrification | |
| CN104276656A (en) | Method for treating high-concentration nitrate waste water and municipal sewage through denitrification anaerobic ammonium oxidation SBR | |
| CN102676433B (en) | Pseudomonas capable of removing nitrogen and phosphorus synchronously at low temperature and application thereof | |
| CN102241459B (en) | Method for reinforcing adsorption-biodegradation (AB) denitrification technology by use of heterotrophic nitrification-aerobic denitrification bacteria | |
| CN102676434B (en) | Strain capable of heterotrophic nitrifying-aerobic denitrifying and dephosphorizing synchronously at low temperature and application | |
| CN113023872B (en) | Device and method for realizing domestic sewage denitrification by synchronous shortcut nitrification-denitrification-anaerobic ammonia oxidation coupling denitrification | |
| CN110282749A (en) | A kind of simulated wastewater and method of fast culture autotrophic denitrification Thiobacillus sludge | |
| CN102719374A (en) | Acinetobacter johnsonii bacterial strain capable of low-temperature synchronous denitrification phosphorous removal and application thereof | |
| CN110040849B (en) | Biochemical treatment method of oil refining wastewater | |
| CN1314604C (en) | Highland and severe cold areas sewage treatment method | |
| CN112358042B (en) | Culture method of wastewater treatment denitrification denitrogenation granular sludge | |
| CN111635062A (en) | Wastewater treatment process | |
| CN103172181A (en) | BRGA (Biological Rotating Gradient Aeration) municipal wastewater treatment method | |
| CN104230109B (en) | UASB/A/MBBR is in conjunction with the method for chemical Treatment height organism high ammonia-nitrogen wastewater | |
| CN112358041B (en) | Granular sludge culture method for synchronous denitrification and methane production and COD removal | |
| CN113735261B (en) | Treatment process and treatment device for aquaculture wastewater | |
| CN102060416A (en) | Method for treating low-temperature city sewage by using anoxic-oxic moving bed biomembrane reactors | |
| CN201722253U (en) | Synchronous sewage denitrification and phosphorus-removal system | |
| CN114409063A (en) | Method for treating chromium (VI) pollution of underground water by using aerobic granular sludge system | |
| CN103011417A (en) | Method for efficiently treating ammonia nitrogen sewage at low temperature | |
| CN109665632B (en) | Process for rapidly degrading high-concentration eutrophic sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |