CN107381930A - Denitrification dephosphorization system of the heavy metal flocculation joint energy microalgae to biogas slurry of fermenting - Google Patents
Denitrification dephosphorization system of the heavy metal flocculation joint energy microalgae to biogas slurry of fermenting Download PDFInfo
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- CN107381930A CN107381930A CN201710383819.4A CN201710383819A CN107381930A CN 107381930 A CN107381930 A CN 107381930A CN 201710383819 A CN201710383819 A CN 201710383819A CN 107381930 A CN107381930 A CN 107381930A
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- C02F9/00—Multistage treatment of water, waste water or sewage
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
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- C02F2101/105—Phosphorus compounds
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- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
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Abstract
Denitrification dephosphorization system the invention discloses heavy metal flocculation joint energy microalgae to biogas slurry of fermenting, the biogas slurry treatment unit (1), both culturing microalgae unit (2) and algae that the system includes being sequentially connected collect machining cell (3)；The biogas slurry treatment unit (1) includes biogas slurry installation for fermenting (11), the first biogas slurry filter (12), heavy metal flocculation plant (13) and the second biogas slurry filter (14) being sequentially connected；The both culturing microalgae unit (2) includes the nutrient solution preparation facilities (21) and micro-algae propagation device (22) being sequentially connected；The microalgae that the algae collects machining cell (3) and includes being sequentially connected obtains processing unit (plant) (31) and the 3rd biogas slurry filter (32).The present invention is pre-processed using heavy metal flocculation plant and filter assemblies to fermentation biogas slurry, optimizes microalgae living environment by nutrient solution preparation facilities, it is ensured that microalgae can utilize nutriment growth and breeding in biogas slurry, and biogas slurry recycling is realized while purifying biogas slurry.
Description
Technical field
The present invention relates to biogas slurry treatment technology and microdisk electrode technical field, more particularly to the heavy metal flocculation joint energy are micro-
Denitrification dephosphorization system of the algae to biogas slurry of fermenting.
Background technology
With the fast development of scale animal and poultry cultivation industry, biogas engineering construction produces substantial amounts of anaerobic fermentation product, natural pond
Liquid pollution problem increasingly highlights.Methane-generating pit continuously discharges the biogas slurry of enormous amount, and complicated component is various, contains heavy metal, antibiosis
The harmful components such as element and hormone, can be caused greatly to rural drinking water safety, soil, agricultural product, air quality and human settlement
Threaten.But the low C/N ratios of anaerobic fermentation water outlet, content of beary metal height constrain the follow-up biological advanced treating of biogas slurry.Thus, visit
It is extremely urgent to seek biogas slurry further treatment technique that is effective, simple and having economy.
Microalgae has the characteristics that ecologicaI distribution is wide, be easy to culture and the speed of growth is fast.In process of production, microalgae can be realized
Production of energy, purification of waste water and C02The height joint of emission reduction, its production efficiency is high and does not strive water with striving with crops, can not only
Improve environment, can also obtain the environment increment energy and other high value added products, therefore, microalgae is considered as potential substitution
Oil turns into the biomass resource of production and transport fuel.
Biogas slurry is product of the breeding wastewater after anaerobic fermentation, rich in the necessary nitrogen of micro algae growth, phosphorus, potassium, copper, iron,
The elements such as zinc.The problems such as being demanded perfection urgently for biogas slurry complicated component, processing hardly possible and biogas slurry culture microalgae bioreactor with improving,
The utilization of resources and its denitrification dephosphorization technique of research and development cultivation biogas slurry pretreating process and biogas slurry pilot scale culture microalgae, will cultivate natural pond
Liquid processing and the production of biodiesel technology of algae are coupled, and are optimized microalgae bioreactor, are realized biogas slurry recycling, for solution
Certainly Pollution from livestock and poultry problem and Resources for construction economizing type, environmentally friendly new rural village provide good a technology and engineering
Example, there is universal dissemination to the processing of China's Pollution from livestock and poultry.
The content of the invention
The technical problems to be solved by the invention are：One kind is provided and flocculates joint energy microalgae to fermentation biogas using heavy metal
The denitrification dephosphorization system of liquid, the system can solve that industrial large-scale farming microalgae cost is high to ask while biogas slurry is purified
Topic, certain facilitation is served to microalgae production biodiesel.
The technical solution adopted in the present invention：Denitrogenation dephosphorizing system of the heavy metal flocculation joint energy microalgae to biogas slurry of fermenting
System, the biogas slurry treatment unit (1), both culturing microalgae unit (2) and algae that the system includes being sequentially connected collect machining cell (3)；
The biogas slurry treatment unit (1) includes biogas slurry installation for fermenting (11), the first biogas slurry filter (12), the heavy metal being sequentially connected
Flocculation plant (13) and the second biogas slurry filter (14)；The both culturing microalgae unit (2) includes the nutrient solution system being sequentially connected
Standby device (21) and micro-algae propagation device (22)；The microalgae acquisition that the algae collects machining cell (3) and includes being sequentially connected adds
Frock puts (31) and the 3rd biogas slurry filter (32).
Preferably, the second biogas slurry filter (14) is connected with the nutrient solution preparation facilities (21).
Preferably, the micro-algae propagation device (22) obtains processing unit (plant) (31) with the microalgae and is connected.
Preferably, it is provided with return duct between the nutrient solution preparation facilities (21) and the 3rd biogas slurry filter (32)
Road (4).
Preferably, it is equipped with agitating device inside the biogas slurry installation for fermenting (11) and the heavy metal flocculation plant (13)
(6)。
Preferably, the biogas slurry installation for fermenting (11) is provided with passage (111) and biogas slurry entrance (112).
Preferably, it is provided with flow control meter between the nutrient solution preparation facilities (21) and the micro-algae propagation device (22)
(23)。
Preferably, the micro-algae propagation device (22) and the microalgae are provided with water pump between obtaining processing unit (plant) (31)
(33)。
Preferably, lighting device (221) and aerator (222) are provided with inside the micro-algae propagation device (22).
Preferably, the biogas slurry installation for fermenting (11), the heavy metal flocculation plant (13), the nutrient solution preparation facilities
(21) and the micro-algae propagation device (22) is equipped with draining valve (100).
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is by setting biogas slurry treatment unit, both culturing microalgae
Unit and algae collect machining cell, realize the purification of biogas slurry and the coupling of microalgae oil-producing two systems, have both overcome existing
Cultivation biogas slurry technology and algae biodiesel technology be separated limitation, waste water can be become again as resource, purification give up
Biodiesel is produced while water, realizes biogas slurry recycling；Specifically, before microalgae is using biogas slurry of fermenting, weight is utilized
Metal flocculation plant and filter assemblies pre-process to fermentation biogas slurry, beneficial to the growth and breeding of microalgae, then by nutrient solution system
Standby device and micro-algae propagation installation optimization microalgae living environment, it is ensured that microalgae can carry out growing numerous using nutriment in biogas slurry
Grow, on the one hand, using the absorption during micro algae growth to nutriment in biogas slurry and then biogas slurry is purified, on the other hand, microalgae
Grease is accumulated in vivo using the nutriment of absorption again, and biogas slurry recycling is realized while biogas slurry is purified；In addition,
Biogas slurry outlet is also connected by reflux line with nutrient solution preparation facilities, and microalgae can be made repeatedly to enter using the nutriment in biogas slurry
Row breeding, realizes circularly purifying water quality and Cyclic culture microalgae.
Brief description of the drawings
Fig. 1 is structural representation of the heavy metal of the present invention flocculation joint energy microalgae to the denitrification dephosphorization system for biogas slurry of fermenting
Figure.
Embodiment
Technical scheme is further illustrated with reference to specific embodiment.
As shown in figure 1, heavy metal flocculate joint energy microalgae to ferment biogas slurry denitrification dephosphorization system, the system including according to
Biogas slurry treatment unit (1), both culturing microalgae unit (2) and the algae of secondary connection collect machining cell (3)；The biogas slurry treatment unit
(1) the biogas slurry installation for fermenting (11), the first biogas slurry filter (12), heavy metal flocculation plant (13) and the being sequentially connected are included
Two biogas slurry filters (14)；The both culturing microalgae unit (2) includes nutrient solution preparation facilities (21) and the microalgae being sequentially connected
Equipment for breeding (22)；The microalgae that the algae collects machining cell (3) and includes being sequentially connected obtains processing unit (plant) (31) and the 3rd
Biogas slurry filter (32).
In the inventive solutions, the second biogas slurry filter (14) and the nutrient solution preparation facilities (21)
Connection, the micro-algae propagation device (22) obtain processing unit (plant) (31) with the microalgae and are connected, the nutrient solution preparation facilities
(21) reflux line (4) is provided between the 3rd biogas slurry filter (32).
In the inventive solutions, the biogas slurry installation for fermenting (11) and the heavy metal flocculation plant (13) are internal
Agitating device (6) is equipped with, the biogas slurry installation for fermenting (11) is provided with passage (111) and biogas slurry entrance (112), the culture
Flow control meter (23), the micro-algae propagation device are provided between liquid preparation facilities (21) and the micro-algae propagation device (22)
(22) water pump (33) is provided between microalgae acquisition processing unit (plant) (31), is provided with and shines inside the micro-algae propagation device (22)
Bright device (221) and aerator (222), the biogas slurry installation for fermenting (11), the heavy metal flocculation plant (13), the training
Nutrient solution preparation facilities (21) and the micro-algae propagation device (22) are equipped with draining valve (100).
For present system in specific works, fermentation biogas slurry enters biogas slurry installation for fermenting (11) from entrance (112), further
Carry out anaerobic and aerobic fermentation and the broken dissolving with macromolecular substances for accelerating particulate matter is stirred by agitating device (6).Natural pond
The fermentation biogas slurry of liquid installation for fermenting (11) outflow removes undissolvable solid and micro- life by the first biogas slurry filter (12)
Enter heavy metal flocculation plant (13) after thing, metal flocculant is added in heavy metal flocculation plant (13) and is removed in fermentation biogas slurry
Heavy metal, the agitating device (6) in heavy metal flocculation plant (13) improves the removal efficiency of heavy metal.Then, biogas slurry stream
Through the second biogas slurry filter (14), the second biogas slurry filter (14) reclaims the heavy metal in flocculant and biogas slurry, removes weight
After metal, biogas slurry flows into nutrient solution preparation facilities (21), can carry out pH regulation in nutrient solution preparation facilities (21) or add it
His nutriment makes it meet the breeding demand of microalgae.Microalgae flows into micro-algae propagation after nutrient solution preparation facilities (21) culture
Device (22), the culture of microalgae is carried out in (22), wherein lighting device (221) provides illumination, and aerator (222) is continuously logical
Enter air.Processing unit (plant) (31) is obtained by microalgae after microdisk electrode maturation and collect microalgae, then filter and fill by the 3rd biogas slurry
Put (32) further microalgae collected in aqueous phase.Due to the nutrient such as N, P, K containing higher concentration in fermentation biogas slurry, pass through
The utilization for once realizing resource using that can not maximize of microalgae, so reflux line can be passed through after filter (32)
(4) nutrient solution preparation facilities (21) cultivating microalgae again is back to, purification but also the reality of biogas slurry had not only been realized after repeatedly utilizing
The utilization of resource is showed.Most discharged afterwards through drainage pipeline (5).
In the present invention, air enters quickening aerobic fermentation speed by passage (111) can also discharge biogas slurry fermentation dress
Put gas caused by (11).
Draining valve (100) is acquisition biogas slurry installation for fermenting (11), heavy metal flocculation plant (13), nutrient solution preparation facilities
(21) and needed for micro-algae propagation device (22) water sample.
Fermentation biogas liquid stream in flow control meter (23) control nutrient solution preparation facilities (21) enters micro-algae propagation device (22)
Flow.
Algae solution in micro-algae propagation device (22) is transported to microalgae and obtained in processing unit (plant) (31) by water pump (33).
Embodiment 1
During specific implementation, the filter sizes of the biogas slurry filter are arranged to 0.45 micron.The biogas slurry installation for fermenting
Volume be 50 tons, the volume of the heavy metal flocculation plant is 8 tons, the volume of the nutrient solution preparation facilities is 6 tons, described
The volume of micro-algae propagation device is 50 tons and the pipeline flow can 4 ton days.
The detailed process of the present embodiment progress is described below in detail.
As shown in figure 1, exemplified by entering the biogas slurry 3-4 tons of the biogas slurry installation for fermenting (11) daily, the particle in biogas slurry
The solids such as thing be stirred in the biogas slurry installation for fermenting (11) device (6) stirring it is broken after, more tiny solid is further molten
Solution, its nutrient can be discharged into biogas slurry, and air is entered in biogas slurry installation for fermenting (11) by passage (111), can be accelerated
Aerobic fermentation speed；
Biogas slurry is after biogas slurry installation for fermenting (11) and the filtering of the first biogas slurry filter (12), due to the first biogas slurry mistake
A diameter of 0.45 micron of the filter membrane of device (12) is filtered, so the solid and microorganism in biogas slurry can not pass through filter membrane, it is impossible to pass through
The solid matter of filter membrane can discharge after Biochemical method.Enter heavy metal flocculation plant (13) through the aqueous phase of filter membrane,
The heavy metal added in heavy metal flocculation plant (13) in heavy metal flocculant removal fermentation biogas slurry, eliminates follow-up micro-algae propagation
When heavy metal to the inhibitory action of microalgae, the stirring of the agitating device (6) in heavy metal flocculation plant (13) serves quickening wadding
Solidifying agent and the reaction of heavy metal and the effect for the removal efficiency for improving heavy metal.Fermentation biogas slurry passes through heavy metal flocculation plant (13)
After processing, after being filtered by the second biogas slurry filter (14), aqueous phase, which is flowed into the nutrient solution preparation facilities (21), to be turned into
Nutrient solution needed for micro-algae propagation growth, its flow is 3 ton days, it is impossible to is filtered through the flocculant of filter membrane by the second biogas slurry
Device (14) recycling.PH is adjusted in the nutrient solution preparation facilities (21) or adds other required materials；
Nutrient solution in the nutrient solution preparation facilities (21) enters the micro-algae propagation device (22) by pipeline, is micro-
Algae propagation provide nutriment, its flow be 3 ton days, by lighting device (221) adjust micro algae growth needed for intensity of illumination with
Light To Dark Ratio, aeration time and flow are adjusted by aerator (222), promote micro algae growth.
Ripe microalgae and nutrient solution is pumped into the microalgae from the micro-algae propagation device (22) by pipeline and obtains processing
Device (31), its flow are 3 ton days, and the nutrient solution that the microalgae is obtained in processing unit (plant) (31) passes through the 3rd biogas slurry again
Filter (32), a diameter of 0.45 micron of filter membrane, the nutrient solution of transmission flow back to the nutrient solution preparation facilities by pipeline
(21), biogas slurry is made to obtain recycled for multiple times.Impervious microalgae collects processing and utilization.Biogas slurry reaches after recycled for multiple times
Discharged after to required water quality requirement by drainage pipeline (5).
The microalgae of processing unit (plant) (31) collection is obtained by the microalgae, by a series of dehydration, dries, extract and adds
Work operates, and the useful component extracted in microalgae grease and biomass is used, production biodiesel, feed, alcohol etc..
The core of the present embodiment, which is heavy metal flocculation plant and micro-algae propagation device being united, carries out algae
Cultivation, the growth of high concentration Heavy Metals on Algae have very big inhibitory action, after the processing of heavy metal flocculation plant, reduce
The inhibitory action of follow-up Heavy Metals on Algae growth, promotes the growth of microalgae.Nitrogen, phosphorus, potassium needed for algal grown breeding etc.
Nutrient arises directly from the fermentation biogas slurry after filtering, and fermentation biogas slurry can be with recycled for multiple times.Cultivate obtained algae
Biomass is after extraction, available for preparing the raw material of industry.Biogas slurry money is realized while ensureing to ferment biogas slurry advanced treating
Sourceization utilizes.
For those skilled in the art, technical scheme that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deformed the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (10)
- Denitrification dephosphorization system of the joint energy microalgae to biogas slurry of fermenting 1. heavy metal flocculates, it is characterised in that：The system include according to Biogas slurry treatment unit (1), both culturing microalgae unit (2) and the algae of secondary connection collect machining cell (3)；The biogas slurry treatment unit (1) the biogas slurry installation for fermenting (11), the first biogas slurry filter (12), heavy metal flocculation plant (13) and the being sequentially connected are included Two biogas slurry filters (14)；The both culturing microalgae unit (2) includes nutrient solution preparation facilities (21) and the microalgae being sequentially connected Equipment for breeding (22)；The microalgae that the algae collects machining cell (3) and includes being sequentially connected obtains processing unit (plant) (31) and the 3rd Biogas slurry filter (32).
- 2. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：The second biogas slurry filter (14) is connected with the nutrient solution preparation facilities (21).
- 3. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：The micro-algae propagation device (22) obtains processing unit (plant) (31) with the microalgae and is connected.
- 4. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：Reflux line (4) is provided between the nutrient solution preparation facilities (21) and the 3rd biogas slurry filter (32).
- 5. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：Agitating device (6) is equipped with inside the biogas slurry installation for fermenting (11) and the heavy metal flocculation plant (13).
- 6. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：The biogas slurry installation for fermenting (11) is provided with passage (111) and biogas slurry entrance (112).
- 7. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：Flow control meter (23) is provided between the nutrient solution preparation facilities (21) and the micro-algae propagation device (22).
- 8. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：The micro-algae propagation device (22) and the microalgae are provided with water pump (33) between obtaining processing unit (plant) (31).
- 9. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：Lighting device (221) and aerator (222) are provided with inside the micro-algae propagation device (22).
- 10. for heavy metal flocculation joint energy microalgae according to claim 1 to the denitrification dephosphorization system for biogas slurry of fermenting, it is special Sign is：The biogas slurry installation for fermenting (11), the heavy metal flocculation plant (13), the nutrient solution preparation facilities (21) and institute State micro-algae propagation device (22) and be equipped with draining valve (100).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128181A (en) * | 2019-06-14 | 2019-08-16 | 武汉益锦祥生物环保有限公司 | A kind of production method and process units of the phycomycete fertilizer based on biogas slurry |
| CN110938527A (en) * | 2019-11-01 | 2020-03-31 | 同济大学 | Urine and excrement separation, recovery and recycling treatment system for rural dry latrine |
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| CN110938527B (en) * | 2019-11-01 | 2020-09-25 | 同济大学 | Urine and excrement separation, recovery and recycling treatment system for rural dry latrine |
| US20210130212A1 (en) * | 2019-11-01 | 2021-05-06 | Tongji University | Resource treatment system for urine and feces separation and recovery in urine diversion dehydration toilets |
| US11795089B2 (en) * | 2019-11-01 | 2023-10-24 | Tongji University | Resource treatment system for urine and feces separation and recovery in urine diversion dehydration toilets |
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