CN104386809A - Optimized method for treating pig-breeding wastewater by using aerobic granular sludge - Google Patents
Optimized method for treating pig-breeding wastewater by using aerobic granular sludge Download PDFInfo
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- CN104386809A CN104386809A CN201410747833.4A CN201410747833A CN104386809A CN 104386809 A CN104386809 A CN 104386809A CN 201410747833 A CN201410747833 A CN 201410747833A CN 104386809 A CN104386809 A CN 104386809A
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- aerobic particle
- particle mud
- mlss
- mud
- pig raising
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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
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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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
- C02F3/006—Regulation methods for biological treatment
-
- 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
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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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
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- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to an optimized method for treating pig-breeding wastewater by using aerobic granular sludge. The method is suitable for treating high-nitrogen actual pig-breeding wastewater after anaerobic digestion, and aims to solve the problems of low stability, low sludge quantity and low nitrogen removal efficiency in the pig-breeding wastewater treatment process in the existing anaerobic system. The pH value of the system in the operation period is controlled at 7.5+/-0.1, the superficial velocity of gas in the system is 1.5-1.8 cm.s<-1>, the granular sludge concentration (MLSS) is 8000+/-1000 mg/L, and the volume exchange ratio is 60-80%. The aerobic granular sludge has the advantages of high stability, high granular compactness, favorable sinking performance and high physical strength; and the overall system can operate stably, can efficiently remove the COD (chemical oxygen demand) and ammonia nitrogen in the wastewater, has the advantages of simple operation mode and small occupied area, and has the possibility for practical application.
Description
Technical field
Patent of the present invention relates to a kind of optimization method of aerobic particle mud process Pig raising wastewater.Belong to field of water pollution control.
Background technology
In recent years, rapidly, livestock and poultry cultivation amount presents obvious ascendant trend, so the wastewater discharge of livestock and poultry farm is also increasing year by year, Wastewater from Pig Farm is the part wherein accounting for large percentage in the livestock and poultry breeding industry development of China.The waste water water displacement on large-scale pig farm is large and concentrated, the features such as these waste water have that organic content is high, Different Nitrogen Concentration is high, have microbiotic and pathogenic agent is residual, need effectively to process before discharging, otherwise serious environmental pollution can be caused to environment, even threaten local ecological safety.So, carry out concentrating to Pig raising wastewater and effectively process and be very important.
At present, what the waste water disposal facility on some pig farms mainly utilized is Anaerobic Microbiological Treatment Technology.The advantage of anaerobic treatment is the organic pollutant in energy efficient degradation waste water, but Anaerobic Methods in Treating is difficult to remove the high density nitrogen in waste water, so, how effectively the nitrogen pollutant removed in Pig raising wastewater is the difficult problem being badly in need of at present solving, and has potential advantage in the nitrogen of aerobic particle mud in removal Pig raising wastewater.It is good that the advantage of aerobic particle mud is mainly reflected in settling property, and capacity of resisting impact load is strong, can Adsorption of Heavy Metals and toxic substance, has the ability of synchronous nitration and denitrification.Exactly because there are these advantages, so aerobic particle mud has many advantages in process Pig raising wastewater.But how effectively to utilize aerobic particle mud system process Pig raising wastewater not also to be noted at present.Therefore, the top condition exploring aerobic particle mud process Pig raising wastewater becomes the task of top priority.
Summary of the invention
Patent of the present invention proposes a kind of optimization method of aerobic particle mud process Pig raising wastewater, and object is to solve the problem that in existing anaerobic system process Pig raising wastewater process, stability is not strong, sludge quantity is not high, nitrogen removal efficiency is not high.Patent of the present invention determines the top condition with aerobic particle mud process Pig raising wastewater from volume-exchange rate, pH value, aeration rate (representing with gas superficial flow velocity), granule sludge concentration four aspects.
Patent sbr reactor device of the present invention is as running gear, this device is right cylinder, aspect ratio is 6:1, on the left side one of reactor, row has 5 water outlets, wherein, a nethermost water outlet be used for draining, get mud, aeration opening is arranged on the below of reactor water outlet, a larger mud discharging mouth is also established in the bottom of reactor, is used for discharging all mud mixtures after end of run.Aerobic particle mud process Pig raising wastewater system is implemented according to the following steps: put in sbr reactor device presented hereinbefore by cultivating successful aerobic particle mud, by the temperature of temperature controller controlling run stage reactors at 23 ~ 28 DEG C.Run three cycles every day, the total time that each cycle is run is 6 hours, namely enters water 1min, aeration 355min, sedimentation 1min, draining 3min.During controlling run, the pH value of system is 7.5 ± 0.1, and in system, gas superficial flow velocity is 1.5-1.8 cms
-1, granule sludge concentration (MLSS) is at 8000 ± 1000mg/L, and arranging volume-exchange rate is 60-80%.
Patent of the present invention compared with prior art has the following advantages:
1. in patent of the present invention, stability of aerobic granular sludge is strong, and particle degree of compactness is better, and settling property is good, and physical strength is high, and therefore, whole system is stable, has higher pollutants removal rate.
2. in patent of the present invention, aerobic particle mud can realize synchronous nitration and denitrification, so the COD that can efficiently remove in sewage and ammonia nitrogen, thus effectively can process the higher waste water of carbon nitrogen content.
3. patent operation mode of the present invention is simple, floor space is little, has the possibility of practical application.
Accompanying drawing explanation
Fig. 1, Fig. 2 are respectively the aerobic particle mud obtained after embodiment 1 and embodiment 2.
Below by embodiment, patent of the present invention is described in further details:
Embodiment 1: running gear is sbr reactor device, useful volume 7 L, run duration Controlling System pH are between 7.5 ± 0.1, and gas superficial flow velocity is 1.8 cms
-1, DO is 4-7 mgL
-1.Granule sludge concentration (MLSS) controls at about 8000mg/L.Arrange volume-exchange rate for (77 ± 2) %, namely the volume of displacement of each cycle is 5.4L.Run four cycles every day, the total time that each cycle is run is 6 hours, namely enters water 1min, aeration 355min, sedimentation 1min, draining 3min.Reactor water inlet is pig farm anaerobic pond water outlet, and wherein COD, ammonia nitrogen, total nitrogen, total phosphorus concentration are respectively 1497.0 mgL
-1, 389.97 mgL
-1, 465.87 mgL
-1, 26.71 mgL
-1.After patent process of the present invention, system reaches 88.42%, 92.40 %, 52.65 % and 40.23 % respectively to the clearance of COD, ammonia nitrogen, total nitrogen and total phosphorus in waste water, and clearance is higher.The stability of granule sludge is strong, various stable in physicochemical property: grain diameter between 0.4mm-2.2mm, SVI
5for (17 ± 3) mlg
-1, MLVSS/MLSS is (90.58 ± 2.5) %, and protein content is (39.25 ± 2.9) mgg
-1vSS, polysaccharide content is (43.34 ± 3.6) mgg
-1vSS, PS/PN ratio is 1.10 ± 0.19.
Embodiment 2: running gear is sbr reactor device, useful volume 6 L, run duration arranges volume-exchange rate for (78 ± 2) %, and controlling gas superficial flow velocity is 1.5 cms
-1, DO is 3-6 mgL
-1.Sludge concentration (MLSS) controls at about 8000mg/L.Run duration Controlling System pH value is 7.5 ± 0.1.Run three cycles every day, the total time that each cycle is run is 6 hours, namely enters water 1min, aeration 355min, sedimentation 1min, draining 3min.System water inlet is the actual Pig raising wastewater after anaerobic treatment, and COD, ammonia nitrogen, total nitrogen, total phosphorus concentration are respectively 1224 mgL
-1, 421.65mgL
-1, 467.85 mgL
-1, 22.76mgL
-1.After patent process of the present invention, the clearance of COD, ammonia nitrogen, total nitrogen and total phosphorus is respectively 71.91 %, 99.33 %, 56.52 % and 48.37 %, and system has good carbon nitrogen phosphorus ligands effect.In the process of disposing of sewage, the stable in physicochemical property of aerobic particle mud, particle diameter also changes not quite: grain diameter between 0.5mm-2.0mm, SVI
5for (16 ± 4) mlg
-1, MLVSS/MLSS is (89.64 ± 3.7) %, and protein content is (77.98 ± 5.4) mgg
-1vSS, polysaccharide content is (43.34 ± 4.1) mgg
-1vSS, PS/PN are than being (55.58 ± 9.78) %.
Claims (5)
1. the optimization method of an aerobic particle mud process Pig raising wastewater, it is characterized in that: patent sbr reactor device of the present invention is as running gear, this device is right cylinder, aspect ratio is 6:1, on the left side one of reactor, row has 5 water outlets, wherein, a nethermost water outlet be used for draining, get mud, aeration opening is arranged on the below of reactor water outlet, a larger mud discharging mouth is also established in the bottom of reactor, be used for after end of run discharging all mud mixture, by the temperature of temperature controller controlling run stage reactors at 23 ~ 28 DEG C.
2. the optimization method of a kind of aerobic particle mud process Pig raising wastewater according to claim 1, it is characterized in that putting in sbr reactor device according to claim 1 by cultivating successful aerobic particle mud, during controlling run, the pH value of system is between 7.0-7.5, and in system, gas superficial flow velocity is 1.2-2.0 cms
-1, granule sludge concentration (MLSS) is at 8000 ± 2000mg/L, and arranging volume-exchange rate is 60-80%.
3. the optimization method of a kind of aerobic particle mud process Pig raising wastewater according to claim 1, it is characterized in that joining in sbr reactor device according to claim 1 by cultivating successful aerobic particle mud, during each reactor controlling run, the volume-exchange rate of system is 60-80%, and in system, gas superficial flow velocity is 1.2-2.0 cms
-1, granule sludge concentration (MLSS) controls at 8000 ± 2000mg/L, and the pH value arranging reactor is 7.5 ± 0.1.
4. the optimization method of a kind of aerobic particle mud process Pig raising wastewater according to claim 1, it is characterized in that putting into sbr reactor device according to claim 1 by cultivating successful aerobic particle mud, during controlling run, the volume-exchange rate of system is 60-80%, pH value is 7.5 ± 0.1, granule sludge concentration (MLSS) controls at 8000 ± 2000mg/L, and arranging gas superficial flow velocity in system is 1.5-1.8cms
-1.
5. the optimization method of a kind of aerobic particle mud process Pig raising wastewater according to claim 1, it is characterized in that putting into above-mentioned sbr reactor device by cultivating successful aerobic particle mud, during controlling run, the volume-exchange rate of system is 60-80%, pH value is 7.5 ± 0.1, and arranging gas superficial flow velocity in system is 1.5-1.8cms
-1, arranging granule sludge concentration (MLSS) is 9000 ± 1000mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747833.4A CN104386809A (en) | 2014-12-10 | 2014-12-10 | Optimized method for treating pig-breeding wastewater by using aerobic granular sludge |
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| CN201410747833.4A CN104386809A (en) | 2014-12-10 | 2014-12-10 | Optimized method for treating pig-breeding wastewater by using aerobic granular sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876330A (en) * | 2015-05-15 | 2015-09-02 | 中国科学院城市环境研究所 | Aerobic granular sludge system construction and operation method for treating culture biogas slurry |
| CN105836969A (en) * | 2016-05-14 | 2016-08-10 | 厦门史帝福环保科技有限公司 | Pig farm wastewater treatment method |
| CN108658220A (en) * | 2018-05-14 | 2018-10-16 | 中国科学院城市环境研究所 | Photosynthetic organism pelletizing system for Pollution from livestock and poultry recycling treatment |
-
2014
- 2014-12-10 CN CN201410747833.4A patent/CN104386809A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876330A (en) * | 2015-05-15 | 2015-09-02 | 中国科学院城市环境研究所 | Aerobic granular sludge system construction and operation method for treating culture biogas slurry |
| CN104876330B (en) * | 2015-05-15 | 2017-11-24 | 中国科学院城市环境研究所 | A kind of aerobic particle mud system constructing and operation method for handling cultivation biogas slurry |
| CN105836969A (en) * | 2016-05-14 | 2016-08-10 | 厦门史帝福环保科技有限公司 | Pig farm wastewater treatment method |
| CN105836969B (en) * | 2016-05-14 | 2019-01-18 | 厦门史帝福环保科技有限公司 | A kind of Wastewater from Pig Farm processing method |
| CN108658220A (en) * | 2018-05-14 | 2018-10-16 | 中国科学院城市环境研究所 | Photosynthetic organism pelletizing system for Pollution from livestock and poultry recycling treatment |
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Application publication date: 20150304 |