CN105776745A - Biological treatment method of high-ammonia nitrogen pig raising biogas slurry - Google Patents
Biological treatment method of high-ammonia nitrogen pig raising biogas slurry Download PDFInfo
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- CN105776745A CN105776745A CN201610206471.7A CN201610206471A CN105776745A CN 105776745 A CN105776745 A CN 105776745A CN 201610206471 A CN201610206471 A CN 201610206471A CN 105776745 A CN105776745 A CN 105776745A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/004—Apparatus and plants for the biological treatment of water, waste water or sewage comprising a selector reactor for promoting floc-forming or other bacteria
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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Abstract
The invention discloses a biological treatment method of high-ammonia nitrogen pig raising biogas slurry. The method comprises the following steps: (1) after solid-liquid separation of the pig raising biogas slurry, sequentially performing disinfection, nitrogen-phosphorus ratio adjustment and pH adjustment of a clear liquid to obtain pretreated biogas slurry; (2) inoculating the pretreated biogas slurry with microalgae in a logarithmic phase, wherein the volume ratio of the microalgae to biogas slurry is 5-15%, the treatment temperature is 20-26 DEG C, the illumination intensity is 4,000-6,000lux, and the light-dark ratio is (9-14):(14-9)h; and performing aeration or mechanical stirring for 7-14d; and (3) after the treatment, performing solid-liquid separation of the biogas slurry containing microalgae slurry, wherein the liquid is purified biogas slurry, and the solid is microalgae biomass. The method is simple to operate; the removal rates of ammonia nitrogen and total phosphorus both exceed 90%; the separated microalgae biomass can be used as a raw material of a feed or biodiesel; and secondary pollution is avoided.
Description
Technical field
The present invention relates to a kind of high ammonia nitrogen to raise pigs the bioremediation of biogas slurry, be specifically related to the Pig raising wastewater bioremediation based on both culturing microalgae, belong to technical field of biological environmental protection.
Background technology
In recent years, along with whole nation livestock and poultry breeding industry, especially pig industry large-scale degree is more and more higher, also brings day by day serious problem of environmental pollution while solving animal products supply and driving rural economic development.Investigation display, within 2014, national livestock and poultry breeding industry discharge COD reaches 289.4 ten thousand tons, and ammonia nitrogen reaches 28.7 ten thousand tons, and total phosphorus reaches 23.2 ten thousand tons.Without obtaining enough process, these nutrient substance will affect the life of agricultural development and environmental quality and people.At present, Pig raising wastewater processes mainly through the mode of anaerobic fermentation, but this digestion process is degrading substantial amounts of Organic substance and create the ammonia nitrogen of high concentration simultaneously, reaches 150～600mg/L.Meanwhile, possibly together with polluters such as (5～30mg/L) such as the COD (500～2500mg/L) of higher concentration, total phosphorus in biogas slurry.
Processing method for biogas slurry of raising pigs has multiple at present, as adopted the tupes such as artificial swamp method, A/O-MBR method, guanite crystallization process.But these methods are due to features such as operating cost are too high and operating technology difficulty is big at present, it is difficult to promote raiser, and said method is not as obvious for the nitrogen in biogas slurry, phosphorus ligands effect.Therefore, it is necessary for the novel research raising pigs biogas slurry treatment technology.
Microalgae is a kind of microbiologic population with bio-diversity and high specificity, it is possible to adapt to various ecological environment.And, microalgae biomass is rich in oils and fats, starch and protein, it is possible to as the non-grain raw material of biodiesel and Chemical Manufacture.But, the great demand of the nutrient substance such as nitrogen, phosphorus and water makes it there is the problem that toxigenic capacity is high, limits its industrialization development.In this context, going to cultivate microalgae as nutrient source with waste water is one of best bioremediation.This method can greatly reduce the expense of culture medium can remove the pollutant in waste water simultaneously.Additionally, utilize the technology that microalgae processes waste water to be based on natural ecosystems, do not result in secondary pollution.
Summary of the invention
It is an object of the present invention to provide a kind of high ammonia nitrogen to raise pigs the bioremediation of biogas slurry, solve current pig farm and produce high ammonia nitrogen biogas slurry treatment cost height, operating difficulties, weak effect, be difficult to the common problem promoted.
A kind of high ammonia nitrogen is raised pigs the bioremediation of biogas slurry, comprises the steps:
(1), after biogas slurry of raising pigs solid-liquid separation, clear liquid is sequentially carried out sterilization, N/P ratio adjustment and pH and adjusts, and obtains pretreated biogas slurry；
(2) inoculate, in pretreated biogas slurry, the microalgae being in logarithmic (log) phase with biogas slurry volume ratio 5～15% inoculum concentration by microalgae.Treatment temperature is 20～26 DEG C, and intensity of illumination is 4000～6000lux, Light To Dark Ratio (9～14): (14～9) h, aeration or mechanical agitation, and the process time is 7～14d；
(3) after having processed, the biogas slurry starched containing microalgae algae being carried out solid-liquid separation, liquid is the biogas slurry of purification, and solid is microalgae biomass.
A kind of high ammonia nitrogen of the present invention is raised pigs the bioremediation of biogas slurry, and the biogas slurry COD after described anaerobic fermentation is 500～2500mg/L, and ammonia nitrogen is 150～600mg/L, and total phosphorus is 5～30mg/L.
A kind of high ammonia nitrogen of the present invention is raised pigs the bioremediation of biogas slurry, after step (1) is specially biogas slurry solid-liquid of raising pigs, it is 25～40 that clear liquid concentration 7～12% liquor natrii hypochloritis (effective chlorine content % > 10.0) 0.1～0.3mL/L adjusts biogas slurry N/P ratio after carrying out disinfection, and pH is 8.0～11.0.
A kind of high ammonia nitrogen of the present invention is raised pigs the bioremediation of biogas slurry, and step (2) described microalgae is that scenedemine section Coelastrella belongs to.
A kind of high ammonia nitrogen of the present invention is raised pigs the bioremediation of biogas slurry, and the described biogas slurry to starching containing microalgae algae of step (3) carries out solid-liquid separating method and is specially Filtration or flocculation sedimentation.
A kind of high ammonia nitrogen of the present invention is raised pigs the bioremediation of biogas slurry, is the sewage water treatment method of a kind of with low cost, simple to operate, economical and efficient.The Pig raising wastewater bioremediation based on both culturing microalgae that the method provides, for ammonia nitrogen in biogas slurry, total phosphorus clearance all reach more than 90%, microalgae biomass yield reaches more than 0.5g/L simultaneously.The ecology achieving biogas slurry processes, and produces economic and social benefit while improving environment.
Accompanying drawing explanation
Fig. 1 is that a kind of high ammonia nitrogen of the present invention is raised pigs the bioremediation process chart of biogas slurry.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.
Embodiment 1:
(1), after 10L raises pigs biogas slurry solid-liquid separation, clear liquid adds 2ml10% liquor natrii hypochloritis sterilization, and recording initial ammonia nitrogen concentration is 190.3mg/L, and total phosphorus concentration is 6.3mg/L, pH is 8.8.N/P ratio, pH, all in OK range, can directly use.
(2) inoculate, in pretreated biogas slurry, the microalgae being in logarithmic (log) phase with biogas slurry volume ratio 10% inoculum concentration by microalgae.Being 25 DEG C in temperature, intensity of illumination is 5000lux, Light To Dark Ratio 12:12h, and after processing 10d when aeration agitation, ammonia nitrogen removal frank reaches 99.6%, and total tp removal rate reaches 93.1%.
(3) with flocculation sedimentation, the biogas slurry starched containing microalgae algae is carried out solid-liquid separation after having processed, record microalgae biomass dry weight and reach 0.58g/L.
Embodiment 2:
(1), after 10L raises pigs biogas slurry solid-liquid separation, clear liquid adds 2ml10% liquor natrii hypochloritis sterilization, and recording initial ammonia nitrogen concentration is 249.4mg/L, and total phosphorus concentration is 8.5mg/L, pH is 8.2.N/P ratio, pH, all in OK range, can directly use.
(2) inoculate, in pretreated biogas slurry, the microalgae being in logarithmic (log) phase with biogas slurry volume ratio 10% inoculum concentration by microalgae.Being 25 DEG C in temperature, intensity of illumination is 5000lux, Light To Dark Ratio 12:12h, and after processing 10d when aeration agitation, ammonia nitrogen removal frank reaches 95.9%, and total tp removal rate reaches 90.1%.
(3) with flocculation sedimentation, the biogas slurry starched containing microalgae algae is carried out solid-liquid separation after having processed, record microalgae biomass dry weight and reach 0.49g/L.
Embodiment 3:
(1), after 10L raises pigs biogas slurry solid-liquid separation, clear liquid adds 2ml10% liquor natrii hypochloritis sterilization, and recording initial ammonia nitrogen concentration is 318.9mg/L, and total phosphorus concentration is 10.8mg/L, pH is 8.4.N/P ratio, pH, all in OK range, can directly use.
(2) inoculate, in pretreated biogas slurry, the microalgae being in logarithmic (log) phase with biogas slurry volume ratio 10% inoculum concentration by microalgae.Being 25 DEG C in temperature, intensity of illumination is 5000lux, Light To Dark Ratio 12:12h, and after processing 10d when aeration agitation, ammonia nitrogen removal frank reaches 89.7%, and total tp removal rate reaches 91.2%.
(3) with flocculation sedimentation, the biogas slurry starched containing microalgae algae is carried out solid-liquid separation after having processed, record microalgae biomass dry weight and reach 0.50g/L.
Claims (5)
1. high ammonia nitrogen is raised pigs a bioremediation for biogas slurry, comprises the steps:
(1), after biogas slurry of raising pigs solid-liquid separation, clear liquid is sequentially carried out sterilization, N/P ratio adjustment and pH and adjusts, and obtains pretreated biogas slurry；
(2) inoculate, in pretreated biogas slurry, the microalgae being in logarithmic (log) phase with biogas slurry volume ratio 5～15% inoculum concentration by microalgae.Treatment temperature is 20～26 DEG C, and intensity of illumination is 4000～6000lux, Light To Dark Ratio (9～14): (14～9) h, aeration or mechanical agitation, and the process time is 7～14d；
(3) after having processed, the biogas slurry starched containing microalgae algae being carried out solid-liquid separation, liquid is the biogas slurry of purification, and solid is microalgae biomass.
2. a kind of high ammonia nitrogen according to claim 1 is raised pigs the bioremediation of biogas slurry, it is characterised in that: the biogas slurry COD after described anaerobic fermentation is 500～2500mg/L, and ammonia nitrogen is 150～600mg/L, and total phosphorus is 5～30mg/L.
3. a kind of high ammonia nitrogen according to claim 1 is raised pigs the bioremediation of biogas slurry, it is characterized in that, after step (1) is specially biogas slurry solid-liquid of raising pigs, it is 25～40 that clear liquid concentration 7～12% liquor natrii hypochloritis (effective chlorine content % > 10.0) 0.1～0.3mL/L adjusts biogas slurry N/P ratio after carrying out disinfection, and pH is 8.0～11.0.
4. a kind of high ammonia nitrogen according to claim 1 is raised pigs the bioremediation of biogas slurry, it is characterised in that: step (2) described microalgae is that scenedemine section Coelastrella belongs to.
5. a kind of high ammonia nitrogen according to claim 1 is raised pigs the biological treatment side of biogas slurry, it is characterised in that: the described biogas slurry to starching containing microalgae algae of step (3) carries out solid-liquid separating method and is specially Filtration or flocculation sedimentation.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827309A (en) * | 2017-04-21 | 2018-03-23 | 湖南大学 | A kind of technique for handling high nitrogen phosphorus pig biogas slurry using sesame duckweed thtee-stage shiplock and effluent recycling |
| CN107827238A (en) * | 2017-04-21 | 2018-03-23 | 湖南大学 | A kind of method that high nitrogen phosphorus pig biogas slurry is handled using sesame duckweed |
| CN108585208A (en) * | 2018-04-18 | 2018-09-28 | 南昌航空大学 | A method of utilizing microalgae and the high nitrogen low-carbon Rare Earth Mine mining wastewater of activated sludge step-by-step processing |
| CN108865892A (en) * | 2018-05-29 | 2018-11-23 | 深圳文科园林股份有限公司 | A method of utilizing livestock breeding biogas slurry high yield microalgae |
| CN108991281A (en) * | 2018-07-09 | 2018-12-14 | 江继永 | A method of koi feed is produced using Pig farm wastewater cultivating microalgae |
| CN109043168A (en) * | 2018-07-09 | 2018-12-21 | 江继永 | A method of pig starter feed is produced using Pig farm wastewater cultivating microalgae |
| CN110204054A (en) * | 2019-07-10 | 2019-09-06 | 广东石油化工学院 | A method of utilizing duckweed processing high concentration antibiotic pig raising biogas slurry |
| CN112300943A (en) * | 2020-11-03 | 2021-02-02 | 东台市赐百年生物工程有限公司 | Preparation method of organic biogas slurry for microalgae cultivation |
Citations (3)
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| CN102642987A (en) * | 2012-04-25 | 2012-08-22 | 中国农业大学 | High-concentration sewage treatment method |
| CN103396950A (en) * | 2013-08-09 | 2013-11-20 | 烟台大学 | Biogas slurry ecological purification method based on microalgae cultivation |
| CN104445816A (en) * | 2014-11-25 | 2015-03-25 | 南昌大学 | Method for treating high-concentration ammonia nitrogen pig breeding biogas slurry |
-
2016
- 2016-04-05 CN CN201610206471.7A patent/CN105776745A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642987A (en) * | 2012-04-25 | 2012-08-22 | 中国农业大学 | High-concentration sewage treatment method |
| CN103396950A (en) * | 2013-08-09 | 2013-11-20 | 烟台大学 | Biogas slurry ecological purification method based on microalgae cultivation |
| CN104445816A (en) * | 2014-11-25 | 2015-03-25 | 南昌大学 | Method for treating high-concentration ammonia nitrogen pig breeding biogas slurry |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827309A (en) * | 2017-04-21 | 2018-03-23 | 湖南大学 | A kind of technique for handling high nitrogen phosphorus pig biogas slurry using sesame duckweed thtee-stage shiplock and effluent recycling |
| CN107827238A (en) * | 2017-04-21 | 2018-03-23 | 湖南大学 | A kind of method that high nitrogen phosphorus pig biogas slurry is handled using sesame duckweed |
| CN108585208A (en) * | 2018-04-18 | 2018-09-28 | 南昌航空大学 | A method of utilizing microalgae and the high nitrogen low-carbon Rare Earth Mine mining wastewater of activated sludge step-by-step processing |
| CN108865892A (en) * | 2018-05-29 | 2018-11-23 | 深圳文科园林股份有限公司 | A method of utilizing livestock breeding biogas slurry high yield microalgae |
| CN108991281A (en) * | 2018-07-09 | 2018-12-14 | 江继永 | A method of koi feed is produced using Pig farm wastewater cultivating microalgae |
| CN109043168A (en) * | 2018-07-09 | 2018-12-21 | 江继永 | A method of pig starter feed is produced using Pig farm wastewater cultivating microalgae |
| CN110204054A (en) * | 2019-07-10 | 2019-09-06 | 广东石油化工学院 | A method of utilizing duckweed processing high concentration antibiotic pig raising biogas slurry |
| CN112300943A (en) * | 2020-11-03 | 2021-02-02 | 东台市赐百年生物工程有限公司 | Preparation method of organic biogas slurry for microalgae cultivation |
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Application publication date: 20160720 |