CN105255722A - System and method of culturing microalgae with liquid animal manure - Google Patents
System and method of culturing microalgae with liquid animal manure Download PDFInfo
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- CN105255722A CN105255722A CN201510696057.4A CN201510696057A CN105255722A CN 105255722 A CN105255722 A CN 105255722A CN 201510696057 A CN201510696057 A CN 201510696057A CN 105255722 A CN105255722 A CN 105255722A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- 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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/20—Degassing; Venting; Bubble traps
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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
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- 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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/26—Conditioning fluids entering or exiting the reaction vessel
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- 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
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/36—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of biomass, e.g. colony counters or by turbidity measurements
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/12—Unicellular algae; Culture media therefor
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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 embodiment of the invention discloses a system and method of culturing microalgae with liquid animal manure. The system comprises a waste water aeration treatment pool, a microalgae culturing pool, a microalgae centrifugal machine, a microalgae harvesting pool and an air compressor, wherein the waste water aeration treatment pool is communicated with the microalgae culturing pool through a communicating pipe, the waste water aeration treatment pool and the microalgae culturing pool are each separated into multiple subsidiary pools, and the subsidiary pools are communicated through holes which are formed in the subsidiary pools and arranged in a vertically-staggered mode; aeration pipelines are arranged at the bottom of the waste water aeration treatment pool and the bottoms of all the subsidiary pools of the microalgae culturing pool, and the aeration pipelines are connected with the air compressor; the microalgae harvesting pool is separated into a microalgae harvesting subsidiary pool and a microalgae concentrated solution harvesting subsidiary pool, and the microalgae harvesting subsidiary pool is not communicated with the microalgae concentrated solution harvesting subsidiary pool. When the system and method are applied, cost required for treating the liquid animal manure and environmental pollution caused by the liquid animal manure can be reduced.
Description
Technical field
The present invention relates to agricultural and green technology, particularly relate to a kind of system and method utilizing animal fecaluria water cultivating microalgae.
Background technology
Along with the raising of people's living standard, growing to the demand of poultry product, by means of the innovation of science and technology and the enforcement of vegetable basket project, China's livestock and poultry breeding industry achieves fast development for years.But along with the development of livestock and poultry breeding industry mass-producing, the animal excreta stain disease output that livestock and poultry cultivation produces also increases sharply, and brings day by day serious problem of environmental pollution thus.Such as, because most of scale livestock farming lacks necessary livestock and poultry feces contaminated wastewater treatment facility, livestock and poultry feces waste water is unprocessed or process below standard and directly enter environment, all causes serious harm to water body, soil and atmospheric environment.
At present, biogas engineering is a kind of mode that the process of animal excreta stain disease is comparatively commonly used, and biogas engineering uses ground type tank body or the fermentation of underground bladder-type anaerobic, process animal excreta stain disease.But biogas engineering process animal excreta stain disease, first, required place is comparatively large, equipment is comparatively complicated, with the scale raising of 6000 livestock on hand pigs, need construction capacity to be the anaerobically fermenting pond of 500 cubic metres, and biogas dehydration and sweetener, biogas storage tank need be furnished with; Secondly, generate the chemical oxygen demand (COD) (COD in the liquid of natural pond, ChemicalOxygenDemand) higher, namely under strongly acidic conditions, the oxygen amount needed for organism in potassium dichromate oxidation one liter of animal excreta stain disease, roughly can represent the organism amount in animal excreta stain disease, represent, still more than 2000 with the mg/litre of oxygen; And, biogas engineering still needs continuous supplemental heat source during anaerobically fermenting, to maintain effective anaerobically fermenting temperature (high temperature) of 50 ~ 55 degree or to maintain effective anaerobically fermenting temperature (middle temperature) of 30 ~ 35 degree, energy consumption is larger, and it is large for the generating set investment of supplemental heat source, maintenance protection not easily, is difficult to permanent running; Finally, the natural pond liquid utilization ratio that fermentative processing obtains is lower, generally only leans on also field digestibility and utilization, but the utilization ratio in natural pond liquid also field is not high, still can cause huge environmental stress.
In order to reduce the impact of animal excreta stain disease on environment, the method improved is employing three grades of formula waste water treatment process, specifically, adopt one-level physical sedimentation method, make animal excreta stain disease enter settling tank through equalizing tank and carry out physical sedimentation, enter activated sludge process aeration tank through the animal excreta stain disease of precipitation process and carry out the process of secondary aerobiont, then, the difficult nutrition decomposed is removed again by tertiary treatment method, be the clean water source of recyclable recycling by sewage purification, thus effectively can reduce the pollution of animal excreta stain disease to environment.Wherein, tertiary treatment method comprises: ion exchange method, electric osmose analytical method, biological carbon and phosphorous removal method, sand filtration method, reverse osmosis, activated carbon adsorption etc.
But above-mentioned three grades of formula waste water treatment process, belong to pure expendable process means, the cost of process one ton of animal excreta stain disease is about 15 yuan, substantially without output value, makes the cost needed for process animal excreta stain disease high; Further, three grades of formula waste water treatment process, when removing the difficult nutrition decomposed, need to use chemical agent, and the chemical agent used can cause secondary pollution.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of system and method utilizing animal fecaluria water cultivating microalgae, and the cost needed for reduction process animal excreta stain disease and animal excreta stain disease are to the pollution of environment.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, the embodiment of the present invention provides a kind of system utilizing animal fecaluria water cultivating microalgae, comprising: aerating wastewater treating pond, microdisk electrode pond, micro-algae whizzer, micro-algae harvest pond and air compressor machine, wherein,
Aerating wastewater treating pond is communicated with by communicating pipe with microdisk electrode pond;
Aerating wastewater treating pond and microdisk electrode pond are separated into multiple subpool respectively, are communicated with between each subpool by the upper and lower staggered hole be opened on subpool;
Bottom each subpool in aerating wastewater treating pond and microdisk electrode pond, be laid with aeration pipeline, described aeration pipeline is connected with air compressor machine;
The liquid fecaluria water that pre-treatment obtains injects in aerating wastewater treating pond by the excrement stain disease water inlet that aerating wastewater treating pond is offered, and by upper and lower staggered hole that subpool each in aerating wastewater treating pond is offered, communicating pipe by being connected with microdisk electrode pond after flowing through each subpool flows into microdisk electrode pond, regulate the excrement stain disease flow in inflow aerating wastewater treating pond or flow velocity, the excrement stain disease amount in injection described aerating wastewater treating pond is made to stop predetermined number of days in described aerating wastewater treating pond and microdisk electrode pond, the micro-concentration of algae threshold value pre-set is reached to make micro-concentration of algae in follow-up outflow microdisk electrode pond,
Above the front end, microdisk electrode pond be connected with aerating wastewater treating pond, being provided with micro algae culturing liquid entrance, in rear end, microdisk electrode pond, offering the hole for being connected with micro-algae harvest pond;
At both culturing microalgae initial period, micro-algae concentrated solution injects in micro-algae harvest pond by described micro algae culturing liquid entrance, and described micro-algae concentrated solution, in each subpool in micro-algae harvest pond, with flow growth, the breeding of excrement stain disease, forms micro algae culturing liquid; In both culturing microalgae stationary phase, close described micro algae culturing liquid entrance;
Micro-algae harvest pond is separated into micro-algae harvest subpool and micro-algae concentrated solution harvest subpool, is not communicated with between described micro-algae harvest subpool with micro-algae concentrated solution harvest subpool;
The hole be connected with micro-algae harvest pond that micro algae culturing liquid is offered by rear end, microdisk electrode pond flows into micro-algae harvest subpool;
The micro algae culturing liquid that micro-algae whizzer extracts in micro-algae harvest subpool carries out centrifugal treating, obtain micro-algae concentrated solution and centrifugal water, described micro-algae concentrated solution is expelled in micro-algae concentrated solution harvest subpool and carries out subsequent disposal, described centrifugal water through collect after for agricultural irrigation.
The system of what the embodiment of the present invention provided utilize animal excreta stain disease cultivating microalgae, the aerating wastewater treating pond do not arranged by construction through hole mistake and microdisk electrode pond, and multiple subpool is set, the liquid excrement stain disease that pre-treatment obtains flows into microdisk electrode pond after the Air Exposure of aerating wastewater treating pond, in microdisk electrode pond, by micro-algae and the excrement stain disease mixed culture regulating acidifying after solid-liquid separation, cultivation ratio is 10 ~ 20:1, cultivated days is 10 ~ 20 days, flow out to micro-algae harvest pond eventually through overflow harvest outlet and carry out micro algae culturing liquid collection, apply micro-algae whizzer, centrifugal treating is carried out to the micro algae culturing liquid collected, frustule number can be obtained and reach 1x10
7~ 5x10
8micro-algae concentrated solution of individual/milliliter, thus utilize the nutrition source in natural light and excrement stain disease, carries out microdisk electrode, accelerates sewage purification, effectively reduces cost needed for process animal excreta stain disease and animal excreta stain disease to the pollution of environment.
On the other hand, the embodiment of the present invention provides a kind of method utilizing animal excreta stain disease cultivating microalgae, comprising:
Structure comprises aerating wastewater treating pond, microdisk electrode pond, micro-algae whizzer, the system of micro-algae harvest pond and air compressor machine, wherein, aerating wastewater treating pond is communicated with by communicating pipe with microdisk electrode pond, aerating wastewater treating pond and microdisk electrode pond are separated into multiple subpool respectively, each subpool offers the hole for communicating with adjacent subpool, be communicated with by the upper and lower staggered hole be opened on subpool between subpool, bottom each subpool in aerating wastewater treating pond and microdisk electrode pond, be laid with aeration pipeline, described aeration pipeline is connected with air compressor machine, above the front end, microdisk electrode pond be connected with aerating wastewater treating pond, be provided with micro algae culturing liquid entrance, in rear end, microdisk electrode pond, offer the hole for being connected with micro-algae harvest pond, micro-algae harvest pond is separated into micro-algae harvest subpool and micro-algae concentrated solution harvest subpool, be not communicated with between described micro-algae harvest subpool with micro-algae concentrated solution harvest subpool,
In aerating wastewater treating pond, the liquid excrement stain disease that pre-treatment obtains is injected by the excrement stain disease water inlet that aerating wastewater treating pond is offered, and by the upper and lower staggered hole that subpool each in aerating wastewater treating pond is offered, the communicating pipe by being connected with microdisk electrode pond after flowing through each subpool flows into microdisk electrode pond;
Regulate the excrement stain disease flow in inflow aerating wastewater treating pond or flow velocity, make the excrement stain disease amount in injection described aerating wastewater treating pond stop predetermined number of days in described aerating wastewater treating pond and microdisk electrode pond, reach to make micro-concentration of algae in follow-up outflow microdisk electrode pond the micro-concentration of algae threshold value pre-set;
At both culturing microalgae initial period, micro-algae concentrated solution injects in micro-algae harvest pond by described micro algae culturing liquid entrance, described micro-algae concentrated solution is in each subpool in micro-algae harvest pond, with flow growth, the breeding of excrement stain disease, form micro algae culturing liquid, in both culturing microalgae stationary phase, close described micro algae culturing liquid entrance;
The hole be connected with micro-algae harvest pond that collection is offered by rear end, microdisk electrode pond flows into the micro algae culturing liquid in micro-algae harvest subpool;
The micro algae culturing liquid utilizing micro-algae whizzer to extract in micro-algae harvest subpool carries out centrifugal treating, obtain micro-algae concentrated solution and centrifugal water, described micro-algae concentrated solution is expelled in micro-algae concentrated solution harvest subpool and carries out subsequent disposal, described centrifugal water through collect after for agricultural irrigation.
The method of what the embodiment of the present invention provided utilize animal fecaluria water cultivating microalgae, aerating wastewater treating pond and the microdisk electrode pond of multiple subpool is comprised by construction, fecaluria water flows into microdisk electrode pond and micro-algae mixed culture after the Air Exposure of aerating wastewater treating pond, flow out to micro-algae harvest pond eventually through overflow harvest outlet and carry out micro algae culturing liquid collection, obtain micro-algae concentrated solution, the nutrition source in excrement stain disease is utilized to carry out microdisk electrode, sewage purification can be accelerated, effectively reduce cost needed for process animal excreta stain disease and animal excreta stain disease to the pollution of environment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the system architecture schematic diagram that the embodiment of the present invention utilizes animal fecaluria water cultivating microalgae;
Fig. 2 is the method flow schematic diagram that the embodiment of the present invention utilizes animal fecaluria water cultivating microalgae.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Should be clear and definite, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the system architecture schematic diagram that the embodiment of the present invention utilizes animal fecaluria water cultivating microalgae.See Fig. 1, this system comprises: aerating wastewater treating pond 101, microdisk electrode pond 102, micro-algae whizzer 104, micro-algae harvest pond 103 and air compressor machine 105, wherein,
Aerating wastewater treating pond 101 is communicated with by communicating pipe with microdisk electrode pond 102;
Aerating wastewater treating pond 101 and microdisk electrode pond 102 are separated into multiple subpool respectively, are communicated with between each subpool by the upper and lower staggered hole be opened on subpool;
Bottom each subpool in aerating wastewater treating pond 101 and microdisk electrode pond 102, be laid with aeration pipeline, described aeration pipeline is connected with air compressor machine 105;
Liquid excrement dirt (giving up) water that pre-treatment obtains is injected by the excrement stain disease water inlet that aerating wastewater treating pond 101 is offered, and by upper and lower staggered hole that subpool each in aerating wastewater treating pond 101 is offered, after flowing through each subpool, microdisk electrode pond 102 is flowed into by the communicating pipe be connected with microdisk electrode pond 102, regulate the excrement stain disease flow in inflow aerating wastewater treating pond 101 or flow velocity, the excrement stain disease amount in injection described aerating wastewater treating pond 101 is made to stop predetermined number of days in described aerating wastewater treating pond 101 and microdisk electrode pond 102, the micro-concentration of algae threshold value pre-set is reached to make micro-concentration of algae in follow-up outflow microdisk electrode pond 102,
Above the front end, microdisk electrode pond 102 be connected with aerating wastewater treating pond 101, being provided with micro algae culturing liquid entrance, in rear end, microdisk electrode pond 102, offering the hole for being connected with micro-algae harvest pond 103;
At both culturing microalgae initial period, micro-algae concentrated solution injects in micro-algae harvest pond 103 by described micro algae culturing liquid entrance, described micro-algae concentrated solution in each subpool in micro-algae harvest pond 103, with flow growth, the breeding of excrement stain disease, formative dynamics balance micro algae culturing liquid; In both culturing microalgae stationary phase, close described micro algae culturing liquid entrance;
Micro-algae harvest pond 103 is separated into micro-algae harvest subpool and micro-algae concentrated solution harvest subpool, is not communicated with between described micro-algae harvest subpool with micro-algae concentrated solution harvest subpool;
The hole be connected with micro-algae harvest pond 103 that the micro algae culturing liquid formed is offered by rear end, microdisk electrode pond 102 flows into micro-algae harvest subpool;
The micro algae culturing liquid that micro-algae whizzer 104 extracts in micro-algae harvest subpool carries out centrifugal treating, obtain micro-algae concentrated solution and centrifugal water, described micro-algae concentrated solution is expelled in micro-algae concentrated solution harvest subpool and carries out subsequent disposal, described centrifugal water through collect after for agricultural irrigation.
In the embodiment of the present invention, preferably, carry out pre-treatment to the excrement stain disease flowed in aerating wastewater treating pond 101 in advance, this utilizes the system of animal fecaluria water cultivating microalgae may further include:
Wastewater Pretreatment pond 106, for carrying out solid-liquid separation or anaerobic acidification process or oxygen consumption Air Exposure to animal excreta stain disease, and enters aerating wastewater treating pond 101 by processing the liquid excrement sewage obtained.
In the embodiment of the present invention, micro-algae is that a class is made a living with freshwater and can carry out photosynthetic microorganism, and growth and breeding is rapid, and biomass is large, can utilize photoautotrophy, sustainable supply biomass resource.In the embodiment of the present invention, because fecaluria glassware for drinking water has abundant nitrogen, phosphorus, ammonium salt, nitrate, phosphoric acid salt, the nutritive substance such as micro-metals and carbonic acid gas, thus, micro-algae can be utilized to carry out photoautotrophy, nitrogen can be drawn quickly and efficiently from fecaluria water, phosphorus, ammonium salt, nitrate, phosphoric acid salt, the nutritive substance such as micro-metals and carbonic acid gas, and convert it into organic compound, make to utilize fecaluria water cultivating microalgae, biomass low-cost industrial can be realized produce and discharge of wastewater resource utilization, can effectively and at low cost remove the nitrogen causing body eutrophication, the nutritive substances such as phosphorus, have broad application prospects, further, in animal fecaluria water, cultivating microalgae can effectively reduce costs, and utilizes the renewable energy resources technology of fecaluria water cultivating microalgae to have the unique advantage of environmental protection and economy, in addition, micro-algae is rich in grease, protein, carbohydrate, trace element and other biologically active substance, can be used as bait, one of main source of food and bioenergy.Wherein, bait can be aquatic feed, for fry, shrimp seedling, juvenile crab etc.
As an embodiment, pretreated liquid fecaluria water, its COD value just introduces described aerating wastewater treating pond after 2000 ~ 4000 mg/litre, inject in aerating wastewater treating pond 101 by excrement stain disease water inlet, again after the Air Exposure in aerating wastewater treating pond 101, for micro-algae provides the nutrition source of growth and breeding.
As an embodiment, utilize the aerating wastewater treating pond 101 in the system of animal fecaluria water cultivating microalgae and microdisk electrode pond 102 can build as ground or underground pond body, arrange according to field conditions demand.
As an embodiment, predetermined number of days presses the design of excrement stain disease 1:10 ~ 20, the i.e. total idle day of liquid fecaluria water in aerating wastewater treating pond 101 and microdisk electrode pond 102 10 ~ 20 days, this idle day is also the delay number of days of micro-algae in microdisk electrode pond 102 and aerating wastewater treating pond 101.
Preferably, pre-set micro-concentration of algae (frustule number) be 10
4~ 10
5individual/milliliter.In the embodiment of the present invention, by controlling to flow into the excrement stain disease flow in aerating wastewater treating pond 101 or flow velocity, the number of days that the excrement stain disease injected is stopped from injection aerating wastewater treating pond 101 to outflow microdisk electrode pond 102 is 10 ~ 20 days, can make to inject micro-algae in microdisk electrode pond 102 within this time period, a preferably running balance can be reached, can 10 be reached
4~ 10
5individual/milliliter.
As an embodiment again, if the micro-concentration of algae in microdisk electrode pond 102 (frustule number) does not reach 10
4~ 10
5individual/milliliter, re-injects micro-algae concentrated solution by micro algae culturing liquid entrance, to maintain the stable of microalgae culture system (utilizing the system of animal excreta stain disease cultivating microalgae).Like this, this system can further include:
Micro-microalgae cell counter 107, for detecting the micro algae culturing liquid flowing out microdisk electrode pond 102, if detect the micro-concentration of algae obtained to be less than the micro-concentration of algae pre-set, pointing out and injecting micro-algae concentrated solution by micro algae culturing liquid entrance.
In practical application, micro-algae whizzer 104 includes but not limited to: disc centrifuge and duct type whizzer.Carry out centrifugal treating by micro-algae whizzer 104 pairs of micro algae culturing liquids, frustule number can be obtained and reach 1x10
7~ 5x10
8micro-algae concentrated solution of individual/milliliter.
In the embodiment of the present invention, utilize the pipeline of inflating be laid on bottom aerating wastewater treating pond 101 and microdisk electrode pond 102, respectively aeration is carried out to aerating wastewater treating pond 101 and microdisk electrode pond 102 by air compressor machine 105.Preferably, aerating wastewater treating pond 101 aeration 30 ~ 50 minutes/hour, microdisk electrode pond 102 aeration 5 ~ 15 minutes/hour.
In the embodiment of the present invention, micro-algae can be have pollutant removal characteristic, the micro-algae that high containing grease, carbonic acid gas tolerance is strong and removal efficiency of nitrogen and phosphorus is high, such as, in chlorella, micro-plan ball algae, Botryococcus braunii, Chaetoceros gracilis, extra large Chlorococcum, Isochrysis galbana, Nitzschia closterium minutissima, Phaeodactylum tricornutum, Dunaliella salina, prismatic algae one or more etc.
In the embodiment of the present invention, for existing livestock-raising unmanageable excrement stain disease process problem, by micro-algae and the excrement stain disease mixed culture regulating acidifying after solid-liquid separation, cultivation ratio is 10 ~ 20:1, cultivated days is 10 ~ 20 days, utilize the system (culture systems) of animal fecaluria water cultivating microalgae to adopt and be communicated with Pool body design, system front end is sewage inlet, and through aeration to set up initial-stage culture system, applying micro-algae concentrated solution is algae kind provenance, and the microdisk electrode pond of injected system middle-end, and micro-algae concentrated solution of injection is grown in microdisk electrode pond, breeding, the micro-concentration of algae (frustule number) flowing out microdisk electrode pond is finally made to reach 10
4~ 10
5individual/milliliter, in follow-up, by the excrement sewage of batch introduction acidifying in proper order, day by day cultivate according to above-mentioned cultivation ratio, this training method can make micro-algae gradual adaptation excrement stain disease concentration, thus play micro-algae propagation on one's own account on daytime, night, different battalion consumed in water organic, chemical oxygen demand (COD) (the COD in excrement stain disease can be reached, ChemicalOxygenDemand) clearance 88 ~ 98%, biochemical oxygen demand (BOD) (BOD, BiochemicalOxygenDemand) clearance 85 ~ 95%.Wherein, COD represents under strongly acidic conditions, and utilize the oxygen amount needed for potassium dichromate oxidation one liter of dirty Organic substance in water, represent with the mg/litre of requisite oxygen, COD roughly can represent the organism amount in sewage.
In the embodiment of the present invention, preferably, the COD of the excrement stain disease through acidification injected from front end just introduces described aerating wastewater treating pond after 2000 ~ 4000 mg/litre, pH5 ~ 8, aeration 30 ~ 50 minutes/hour in the aerating wastewater treating pond of front end, aeration 5 ~ 15 minutes/hour in the microdisk electrode pond of middle-end, then, via the continuous batch cultivation detention period of 10 ~ 20 days, flow out to micro-algae harvest pond eventually through overflow harvest outlet and carry out micro algae culturing liquid collection, apply micro-algae whizzer, centrifugal treating is carried out to the micro algae culturing liquid collected, frustule number can be obtained and reach 1x10
7~ 5x10
8micro-algae concentrated solution of individual/milliliter.
In the embodiment of the present invention, micro-algae concentrated solution of obtaining (concentrated algae liquid) using value is high, directly can supply wheel animalcule, fry, shrimp seedling, juvenile crab be used as bait, thus increase aquaculture system algae look, can also play the effect into enhancing color of pet fish.
The embodiment of the present invention utilizes the nutrition source contained in fecaluria water, by acidifying and Air Exposure, fecaluria water is adjusted to suitable carbon-nitrogen ratio, adopt open pond to recuperate and grow, utilize the nutrition source in natural light and fecaluria water, carry out microdisk electrode and obtain micro algae culturing liquid, micro-algae and other microorganisms is made to reach equilibrium state, accelerate sewage purification function, and after the micro algae culturing liquid after cultivation is carried out centrifugal treating, the COD of the algae water after centrifugal can below 150, and extra micro-algae income can be obtained, thus the thorough shortcoming changing existing sewage disposal and can not assume sole responsibility for its profits or losses, build advanced herding waste green energy converting system.Compared to existing closed both culturing microalgae system, do not need additionally to add nutritive element, by great Chi body is divided into several little Chi, and utilize special hole flow-through design, make to utilize animal fecaluria water to carry out the suspended substance (SS produced in microalga cultivation process, SuspendedSubstance) after deposition, micro-algae harvest pond can not be passed to, guarantee continous way cultivation and the stop treatment time of fecaluria water in micro-algae pond of micro-algae, after system stable operation, through actual test, finally the centrifugal point flowing water obtained can reach field irrigation standard (GB5084 ~ 92), further, the system of animal fecaluria water cultivating microalgae that utilizes of the embodiment of the present invention can not cause secondary chemical contamination, and the concentrated algae liquid obtained can also utilize again.
Fig. 2 is the method flow schematic diagram that the embodiment of the present invention utilizes animal excreta stain disease cultivating microalgae.See Fig. 2, this flow process comprises:
Step 201, structure comprises aerating wastewater treating pond, microdisk electrode pond, micro-algae whizzer, the system of micro-algae harvest pond and air compressor machine, wherein, aerating wastewater treating pond is communicated with by communicating pipe with microdisk electrode pond, aerating wastewater treating pond and microdisk electrode pond are separated into multiple subpool respectively, be communicated with by the upper and lower staggered hole be opened on subpool between each subpool, bottom each subpool in aerating wastewater treating pond and microdisk electrode pond, be laid with aeration pipeline, described aeration pipeline is connected with air compressor machine, above the front end, microdisk electrode pond be connected with aerating wastewater treating pond, be provided with micro algae culturing liquid entrance, in rear end, microdisk electrode pond, offer the hole for being connected with micro-algae harvest pond, micro-algae harvest pond is separated into micro-algae harvest subpool and micro-algae concentrated solution harvest subpool, be not communicated with between described micro-algae harvest subpool with micro-algae concentrated solution harvest subpool,
Step 202, in aerating wastewater treating pond, excrement stain disease is injected by the excrement stain disease water inlet that aerating wastewater treating pond is offered, and by the upper and lower staggered hole that subpool each in aerating wastewater treating pond is offered, the communicating pipe by being connected with microdisk electrode pond after flowing through each subpool flows into microdisk electrode pond;
Step 203, regulate the excrement stain disease flow in inflow aerating wastewater treating pond or flow velocity, make the excrement stain disease amount in injection described aerating wastewater treating pond stop predetermined number of days in described aerating wastewater treating pond and microdisk electrode pond, reach to make micro-concentration of algae in follow-up outflow microdisk electrode pond the micro-concentration of algae threshold value pre-set;
Step 204, at both culturing microalgae initial period, micro-algae concentrated solution injects in micro-algae harvest pond by described micro algae culturing liquid entrance, described micro-algae concentrated solution is in each subpool in micro-algae harvest pond, with flow growth, the breeding of excrement stain disease, form micro algae culturing liquid, in both culturing microalgae stationary phase, close described micro algae culturing liquid entrance;
Step 205, is collected the hole be connected with micro-algae harvest pond offered by rear end, microdisk electrode pond and flows into micro algae culturing liquid in micro-algae harvest subpool;
Step 206, the micro algae culturing liquid utilizing micro-algae whizzer to extract in micro-algae harvest subpool carries out centrifugal treating, obtain micro-algae concentrated solution and centrifugal water, described micro-algae concentrated solution is expelled in micro-algae concentrated solution harvest subpool and carries out subsequent disposal, described centrifugal water through collect after for agricultural irrigation.
In the embodiment of the present invention, before the excrement stain disease water inlet by aerating wastewater treating pond is offered injects the liquid excrement stain disease that pre-treatment obtains in aerating wastewater treating pond, the method can further include:
Solid-liquid separation or anaerobic acidification process or oxygen consumption Air Exposure are carried out to animal excreta stain disease, and liquid excrement sewage pre-treatment obtained enters described aerating wastewater treating pond.
In this step, preferably, process the liquid excrement sewage chemical oxygen demand value obtained and after 2000 ~ 4000 mg/litre, just introduce described aerating wastewater treating pond, pH5 ~ 8.
In the embodiment of the present invention, described predetermined number of days is 10 ~ 20 days, and system presses the design of excrement stain disease 1:10 ~ 20, i.e. the total idle day of liquid excrement stain disease in aerating wastewater treating pond and microdisk electrode pond 10 ~ 20 days.
As an embodiment, the method can further include:
Detecting flowing out the micro algae culturing liquid in microdisk electrode pond, if detect the micro-concentration of algae obtained to be less than the micro-concentration of algae pre-set, pointing out and injecting micro-algae concentrated solution by micro algae culturing liquid entrance, described in pre-set micro-concentration of algae be 10
4~ 10
5individual/milliliter.
In the embodiment of the present invention, described micro-algae whizzer comprises disc centrifuge and duct type whizzer, and micro-concentration of algae of described micro-algae concentrated solution is 1x10
7~ 5x10
8individual/milliliter.By regulating the parameter of micro-algae whizzer, can be met micro-algae concentrated solution of requirement, the micro-algae concentrated solution obtained, can carry out commercial exploitation, and such as, supply wheel animalcule, fry, shrimp seedling are used as bait, or are made Organic food.
Preferably, air compressor machine to aerating wastewater treating pond aeration 30 ~ 50 minutes/hour, described microdisk electrode pond aeration 5 ~ 15 minutes/hour.
Preferably, described micro-algae comprises: the one in chlorella, micro-plan ball algae, Botryococcus braunii, Chaetoceros gracilis, extra large Chlorococcum, Isochrysis galbana, Nitzschia closterium minutissima, Phaeodactylum tricornutum, Dunaliella salina, prismatic algae or arbitrary combination.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage media can be magnetic disc, CD, read-only store-memory body (Read ~ OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. utilize a system for animal fecaluria water cultivating microalgae, it is characterized in that, this system comprises: aerating wastewater treating pond, microdisk electrode pond, micro-algae whizzer, micro-algae harvest pond and air compressor machine, wherein,
Aerating wastewater treating pond is communicated with by communicating pipe with microdisk electrode pond;
Aerating wastewater treating pond and microdisk electrode pond are separated into multiple subpool respectively, are communicated with between each subpool by the upper and lower staggered hole be opened on subpool;
Bottom each subpool in aerating wastewater treating pond and microdisk electrode pond, be laid with aeration pipeline, described aeration pipeline is connected with air compressor machine;
The liquid excrement COD of sewage that pre-treatment obtains is at 2000 to 4000 Zhi Inter, inject in aerating wastewater treating pond by the excrement stain disease water inlet that aerating wastewater treating pond is offered, and by upper and lower staggered hole that subpool each in aerating wastewater treating pond is offered, communicating pipe by being connected with microdisk electrode pond after flowing through each subpool flows into microdisk electrode pond, regulate the excrement stain disease flow in inflow aerating wastewater treating pond or flow velocity, the excrement stain disease amount in injection described aerating wastewater treating pond is made to stop predetermined number of days in described aerating wastewater treating pond and microdisk electrode pond, the micro-concentration of algae threshold value pre-set is reached to make micro-concentration of algae in follow-up outflow microdisk electrode pond,
Above the front end, microdisk electrode pond be connected with aerating wastewater treating pond, being provided with micro algae culturing liquid entrance, in rear end, microdisk electrode pond, offering the hole for being connected with micro-algae harvest pond;
At both culturing microalgae initial period, micro-algae concentrated solution injects in micro-algae harvest pond by described micro algae culturing liquid entrance, and described micro-algae concentrated solution, in each subpool in micro-algae harvest pond, with flow growth, the breeding of excrement sewage, forms micro algae culturing liquid; In both culturing microalgae stationary phase, close described micro algae culturing liquid entrance;
Micro-algae harvest pond is separated into micro-algae harvest subpool and micro-algae concentrated solution harvest subpool, is not communicated with between described micro-algae harvest subpool with micro-algae concentrated solution harvest subpool;
The hole be connected with micro-algae harvest pond that micro algae culturing liquid is offered by rear end, microdisk electrode pond flows into micro-algae harvest subpool;
The micro algae culturing liquid that micro-algae whizzer extracts in micro-algae harvest subpool carries out centrifugal treating, obtain micro-algae concentrated solution and centrifugal water, described micro-algae concentrated solution is expelled in micro-algae concentrated solution harvest subpool and carries out subsequent disposal, described centrifugal water through collect after for agricultural irrigation.
2. system according to claim 1, is characterized in that, described system comprises further:
Wastewater Pretreatment system System, for carrying out solid-liquid separation or anaerobic acidification process or oxygen consumption Air Exposure to animal fecaluria water, and liquid excrement sewage pre-treatment obtained enters described aerating wastewater treating pond.
3. system according to claim 1 and 2, is characterized in that, the liquid excrement sewage chemical oxygen demand value that described pre-treatment obtains just introduces described aerating wastewater treating pond after 2000 ~ 4000 mg/litre.
4. system according to claim 1 and 2, is characterized in that, described predetermined number of days is 10 ~ 20 days.
5. system according to claim 1 and 2, is characterized in that, described system comprises further:
Micro-microalgae cell counter, for detecting the micro algae culturing liquid flowing out microdisk electrode pond, if detect micro-concentration of algae of obtaining to be less than the micro-concentration of algae pre-set, point out and inject micro-algae concentrated solution by micro algae culturing liquid entrance, described in pre-set micro-concentration of algae be 10
4~ 10
5individual/milliliter.
6. system according to claim 1 and 2, is characterized in that, described micro-algae whizzer comprises disc centrifuge and duct type whizzer, and micro-concentration of algae of described micro-algae concentrated solution is 1x10
7~ 5x10
8individual/milliliter.
7. system according to claim 1 and 2, is characterized in that, described aerating wastewater treating pond aeration 30 ~ 50 minutes/hour, described microdisk electrode pond aeration 5 ~ 15 minutes/hour.
8. system according to claim 1 and 2, it is characterized in that, described micro-algae comprises: the one in chlorella, micro-plan ball algae, Botryococcus braunii, Chaetoceros gracilis, extra large Chlorococcum, Isochrysis galbana, Nitzschia closterium minutissima, Phaeodactylum tricornutum, Dunaliella salina, prismatic algae or arbitrary combination.
9. utilize a method for animal fecaluria water cultivating microalgae, it is characterized in that, the method comprises:
Structure comprises aerating wastewater treating pond, microdisk electrode pond, micro-algae whizzer, the system of micro-algae harvest pond and air compressor machine, wherein, aerating wastewater treating pond is communicated with by communicating pipe with microdisk electrode pond, aerating wastewater treating pond and microdisk electrode pond are separated into multiple subpool respectively, be communicated with by the upper and lower staggered hole be opened on subpool between each subpool subpool, bottom each subpool in aerating wastewater treating pond and microdisk electrode pond, be laid with aeration pipeline, described aeration pipeline is connected with air compressor machine, above the front end, microdisk electrode pond be connected with aerating wastewater treating pond, be provided with micro algae culturing liquid entrance, in rear end, microdisk electrode pond, offer the hole for being connected with micro-algae harvest pond, micro-algae harvest pond is separated into micro-algae harvest subpool and micro-algae concentrated solution harvest subpool, be not communicated with between described micro-algae harvest subpool with micro-algae concentrated solution harvest subpool,
In aerating wastewater treating pond, the liquid excrement sewage that pre-treatment obtains is injected by the excrement stain disease water inlet that aerating wastewater treating pond is offered, and by the upper and lower staggered hole that subpool each in aerating wastewater treating pond is offered, the communicating pipe by being connected with microdisk electrode pond after flowing through each subpool flows into microdisk electrode pond;
Regulate the excrement stain disease flow in inflow aerating wastewater treating pond or flow velocity, make the excrement stain disease amount in injection described aerating wastewater treating pond stop predetermined number of days in described aerating wastewater treating pond and microdisk electrode pond, reach to make micro-concentration of algae in follow-up outflow microdisk electrode pond the micro-concentration of algae threshold value pre-set;
At both culturing microalgae initial period, micro-algae concentrated solution injects in micro-algae harvest pond by described micro algae culturing liquid entrance, described micro-algae concentrated solution is in each subpool in micro-algae harvest pond, with flow growth, the breeding of excrement stain disease, form micro algae culturing liquid, in both culturing microalgae stationary phase, close described micro algae culturing liquid entrance;
The hole be connected with micro-algae harvest pond that collection is offered by rear end, microdisk electrode pond flows into the micro algae culturing liquid in micro-algae harvest subpool;
The micro algae culturing liquid utilizing micro-algae whizzer to extract in micro-algae harvest subpool carries out centrifugal treating, obtain micro-algae concentrated solution and centrifugal water, described micro-algae concentrated solution is expelled in micro-algae concentrated solution harvest subpool and carries out subsequent disposal, described centrifugal water through collect after for agricultural irrigation.
10. method according to claim 9, it is characterized in that, described predetermined number of days is 10 ~ 20 days, the liquid excrement sewage chemical oxygen demand value that pre-treatment obtains just introduces described aerating wastewater treating pond after 2000 ~ 4000 mg/litre, pH5 ~ 8, described air compressor machine to aerating wastewater treating pond aeration 30 ~ 50 minutes/hour, described microdisk electrode pond aeration 5 ~ 15 minutes/hour, described in pre-set micro-concentration of algae be 10
4~ 10
5individual/milliliter, micro-concentration of algae of described micro-algae concentrated solution is 1x10
7~ 5x10
8individual/milliliter.
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