CN101125767B - Method for treatment of livestock excrements using thermophilic aerobic fermentation, lime solidification and separation by reverse osmosis membrane - Google Patents
Method for treatment of livestock excrements using thermophilic aerobic fermentation, lime solidification and separation by reverse osmosis membrane Download PDFInfo
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Analytical Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a method of treatment of livestock excrements comprising: high temperature aerobic fermentation technology; chemical flocculation technology using lime; physical purification technology using reverse osmosis membrane separation technology. The said high temperature aerobic fermentation technology discharges the livestock excrements through an excrement storage pool and a high temperature aerobic fermentation device to fermentation liquor storage pool. The said chemical flocculation technology discharges the material stored in the fermentation liquor storage pool by high temperature aerobic fermentation technology through mixture pool, a first flocculation tank, dehumidifier, a second flocculation tank and dehumidifier into filtrate storage pool. The physical purification technology using reverse osmosis membrane separation technology is through reverse osmosis membrane separation device and concentrated solution storage pool.
Description
Technical field
The present invention relates to a kind of method of handling animal residue, particularly a kind of use bio-oxidation technology (thermophilic aerobic fermentation), the method of chemical flocculation and dewatering process (lime solidification) and physical purification technology (reverse osmosis membrane separation) and combined treatment animal residue thereof, wherein bio-oxidation technology is used at 50～60 ℃ of thermophilic aerobic fermentation devices of operating down and has been promoted the extinction of pathogenic micro-organism and the decomposition of organic substance, chemical flocculation and dewatering process produce lime manure (limingfertilizer), and except that denitrification, phosphorus, suspended solids (SS), colourity (chromaticity), organic substance, thereby improve the efficient of physical purification technology, and physical purification technology has concentrated remaining organic substance and nitrogen, produces liquid phase fertilizer thus and makes animal residue as resource.
Background technology
The method of handling animal residue is according to the kind of livestock and difference, and mainly is divided into purification treating method and its recovery method as resource.Treatment processs such as that purification treating method uses is for example aerobic, anaerobism and liquid phase corrosion.Yet,, use the in fact impossible purifying animal residue of general sewage water treatment method owing to the content of organic substance in the animal residue and nutrient salts is very high.What the relatively poor small-sized livestock farms of economy and technical qualification was faced is will meet to concentrate a predetermined process difficult problem.
Simultaneously, the method that contains the waste water of high density organic materials as processing, the high temperature aerobic digestion method (need not other external heat supplies) of using the heat energy that is produced by microbial reaction is studied as the part of the purification treating method of high concentrated organic wastewater since the 1970's, but owing to lack various control techniquess, in fact this method is not employed.
Existing resources again take-back strategy mainly by the composting arrangement support of liquid phase fertilizer and solid phase fertilizer, mainly based on family-sized farm.The dispute point of this strategy is the increase of the ocean processing costs of the animal residue that generates, and this is because the running technology of family-sized farm is insufficient and deficient causing of processing power can not fully be realized target.In addition, owing to lack the purification treating method that can suitably handle animal residue, existing livestock wastewater treatment strategy is just suffering from a lot of difficulties.Therefore, authorities of Korean government consider above-mentioned project with the animal residue of processing as the primary pollution source of water system, and have proposed the collaborative process plan of each department.Yet, the dispute point of existing collaborative process plan is, for example because the restriction of treatment process, and because the restriction of gathering system and treatment process, only can handle senior water (high-class water), can not reclaim the pulpous state animal residue that all are produced by the farm; And, processing efficiency is descended rapidly owing to used the sterilizing agent of the popular livestock contagious disease that is used for periodical attack to cause bubble to produce and the microorganism extinction.And existing collaborative process plan is reclaimed the angle transfer from the resource of animal residue, also has a large amount of problems on implementation and cost.Therefore, need effectively stably to carry out early development and the application that resource reclaims and animal residue is handled.
Owing to be reinforced for the legislation of handling livestock waste water, popularized the excremental method of a kind of processing, wherein make water regulate material (for example sawdust) movement is carried out compost, use biological treatment (for example activated sludge process) that urine is carried out purifying.But, because animal residue needs the long relatively time to handle, and the running technology deficiency, the heavy burden of processing costs, the farm that therefore relies on the ocean to handle a large amount of livestock waste water increases recently to some extent.In other example, handle animal residue with the organic fertilizer of sewage sludge etc., utilized the advantage of stabilising method, these stabilising method are the waste treatment methods of producing soil improvement agent, organic fertilizer etc.But, use when the lime stabilization method can be 75～85% (concentration of solid matter is 15～25%) in the humidity of the mud of introducing.Therefore, the most of water content that are difficult to discharge in livestock farms are to use the lime stabilization method in 75～90% the animal residue.Therefore, developed the new harmless and safe lime stabilization method of guaranteeing, but not have to develop is used for the lime stabilization method of water content greater than 85% animal residue.
Therefore, the present invention has developed a kind of cost-effective its recovery method as resource, it is recycling into animal residue in the process of resource, uses by bio-oxidation technology to have thermophilic aerobic fermentation technology, the chemical flocculation technology of using lime of getting rid of the organic substance effect and the physical purification technology of using the reverse osmosis membrane separation technology.
In high temperature aerobic digestion technology, the heat that produces when high temperature aerobic microorganism digesting organic materials is kept and is used in fermentation unit.The high temperature aerobic digestion technology of widespread usage is divided into two kinds: one is a system, and wherein self-priming aerator/stirrer is contained on the sidewall of reactor, and mixes in the organic substance in reactor, provides oxygen with decomposing organic matter matter; Another is a system, wherein by recycle pump with the water of inside by bottom cycle to the top, described recycle pump is contained in the reactor outside to provide oxygen to its inside.The main points of this technology are to control well the method for oxygen supply, and keep microorganism to grow to greatest extent.High temperature aerobic digestion method activity when mainly using thermophilic microorganism for 55～65 ℃ is the strongest.Therefore, the temperature of keeping reactor in high temperature aerobic digestion method is very important at 55～65 ℃.In Korea S, developed a kind of reaction times 4 days systems with interior and can the quality of production good liquid phase fertilizer, in time temperature of reaction brought up to the last of high temperature (thermophilic environment) at short reaction very, aerator runs parallel simultaneously, and study the system drive condition continuously, it at high temperature ferments animal residue, and animal residue is produced liquid phase fertilizer again, simultaneously, begin to utilize the characteristic of the photosynthetic microorganism of animal residue from the later stage in the 1980's.
Summary of the invention
In order to solve the problem of above-mentioned routine techniques, the object of the present invention is to provide a kind of method of handling animal residue, the physical purification technology that it has used thermophilic aerobic fermentation technology and has used the chemical flocculation technology of lime and use reverse osmosis membrane separation technology.
In order to reach the purpose of the invention described above, the invention provides a kind of method of handling animal residue, the physical purification technology that it comprises thermophilic aerobic fermentation technology and uses the chemical flocculation technology of lime and use reverse osmosis membrane separation technology.
According to a further aspect in the invention, a kind of method of using thermophilic aerobic fermentation device and lime solidification device to handle animal residue also is provided, wherein, need not extraneous heat supply, thereby microorganism self heat production keeps hot environment, and lime is added animal residue make animal residue stable, wherein be present in the pathogenic micro-organism in the animal residue in a large number and be eliminated, and animal residue is made stable liquid phase fertilizer and lime solid phase fertilizer by water-borne pathogenic microorganism.
According to a further aspect in the invention, microorganism self heat production is in about 50～60 ℃ to keep temperature.
According to a further aspect in the invention, by add lime with the stable hydrogen ion concentration (pH) that means solution become pH12 or more than.
According to a further aspect in the invention, lime, inorganic coagulant and polymeric coagulant are infused in the water of processing in the thermophilic aerobic fermentation device as chemical conditioner, thereby obtain the big particulate material of size, and use equipment for separating liquid from solid that solid matter is made lime manure, and supernatant liquid suppress the concentration of heavy metal by the spissated liquid phase fertilizer of reverse osmosis membrane separation explained hereafter the time.
Description of drawings
Above-mentioned and other purpose and advantage of the present invention will be by more obvious to preferred embodiment being described in detail with reference to the accompanying drawings, wherein:
Fig. 1 is the schema that explanation the present invention handles the method for animal residue;
Fig. 2 is the schema of the bio-oxidation technology of explanation in the thermophilic aerobic fermentation device;
Fig. 3 is the schema of the chemical flocculation technology of explanation in lime solidification equipment and dewatering unit;
Fig. 4 is the schema of the physical purification technology of explanation in the reverse osmosis membrane separation device;
Fig. 5 is in the thermophilic aerobic fermentation device, and the treatment time is to the diagram of the extinction effects of rotavirus (Rota-virus);
Fig. 6 is in the thermophilic aerobic fermentation device, and the treatment time is to the diagram of the extinction effects of O-157;
Fig. 7 is the diagram to Salmonellas (Salmonella) inactivation effect;
Fig. 8 represents Cryptosporidium parvum (Cryptosporidium parvum) before and after treatment fluorescence picture in the thermophilic aerobic fermentation device.
Preferred forms of the present invention
The method of the processing animal residue of the preferred embodiment of the present invention will illustrate with reference to the accompanying drawings.
Fig. 1 is the method for animal residue is handled in explanation according to the present invention a schema; And Fig. 2 is the schema of explanation bio-oxidation technology in the thermophilic aerobic fermentation device.
The high temperature aerobic digestion is preserved by high temperature and has been eliminated pathogenic micro-organism, has therefore solved when using animal residue on land the worry for pathogenic micro-organism.
In the bio-oxidation technology of thermophilic aerobic fermentation device, the animal residue that leaves in the waste water storage pool is introduced in the thermophilic aerobic fermentation device (TAO system), it is a kind of biological treatment that need not the pre-treatment animal residue by transfer pump, thereby carry out intensive simultaneously and mix and aeration, bring out high temperature microbe then and carry out the spontaneous heating reaction, this reacts self heat production.In reactor, owing to keep high temperature by heating, thereby eliminated most pathogenic micro-organism.In addition, owing to got rid of organic substance by high temperature microbe, and produce ammonia by the dissolving of protein component, cause the hydrogen ion concentration (pH) of solution to raise.In addition, the degasification by ammonia removes denitrification, with the pH that at high temperature raises.Pump is contained in the thermophilic aerobic fermentation device, and the suction of solution is by the method for the automatic introducing air of pressure difference in utilizing.Inject the bubble that causes in the formation of reaction tank top in order to remove air, load onto propeller-like bubble remover.
The thermophilic aerobic fermentation device is the intermittent type device, and it can (greater than BOD30,000mg/L) the organic solid material reaches 60 ℃ (these are the induced death points of pathogenic micro-organism) as substrate material at 1 o'clock by the high temperature microbe reaction using high density.Therefore, 100% pathogenic micro-organism is eliminated by the high temperature preservation effect.It is great to eliminate pathogenic micro-organism effect when reducing land generation liquid fertilizer.
When the liquid fertilizer that produces by the thermophilic aerobic fermentation device can not use, promptly be in unbalanced the time, should carry out purification process.From culturing the animal residue great majority of discharging on the farm is muddy, therefore dense.In existing livestock Sewage treatment systems, the sewage of introducing carries out anaerobic digestion by centrifugal solid and the liquid of being divided into by chemical coagulation/dehydration, and carries out active sludge treatment.Here, when concentrating when having polymeric material, can produce excessive bubble, and a large amount of polymeric material is present in after dehydration in the remaining supernatant liquid as the original waste water of main component.Therefore, the problem of existence is that owing to polymeric material can not successfully decompose and remove in follow-up bioprocess, so the cost of aftertreatment is huge.Therefore the thermophilic aerobic fermentation device is made small molecules with polymeric material, thereby plays pretreated good action when the purification process of animal residue, and when chemical coagulation, provides and reduced the effect that bubble produced and reduced dosage.
Fig. 3 is the schema of the chemical flocculation technology of explanation in lime solidification device and dewatering unit.
The basic purpose of lime stabilization method is the activity that stops pathogenic micro-organism.It is subjected to the influence of the pH time length of pH level and reactant, and is not the influence of the amount of the lime that used.If reactant keep to surpass 2 hours at pH in greater than 12 environment, pathogenic micro-organism is eliminated and microorganism active is suppressed.In addition, the pH of preferred reactant meets the PSRP (significantly reducing the technology of pathogenic agent) of EPA (Bureau for Environmental Protection), and it keeps above 2 hours under maintenance under the condition of pH12.5 or the condition at pH12.
And, lime itself is as the nutrition of plant and be absorbed and assimilate, but the physicochemical property of soil have been improved, the infiltration function of soil for example, the water holding capacity of soil, the glued function of soil, reduce cohesive force, replace base material, and avoid dry (removal of drought), therefore, strengthened root vigor and thereby strengthened absorbing power, and solve or remove the prevention crop growth, promotion organic substance solution dissolves or makes organonitrogen accumulation mineralising and make the spissated various harmful conditions of ammonia nitrogen, thereby it is believed that farm crop and soil are had very big direct or indirect influence.
Lime solidification has been removed organic substance, suspended solids and the heavy metal that is included in the high temperature aerobic treatment liquid fertilizer that uses inorganic coagulant and polymeric coagulant, thereby has improved the processing efficiency as the membrane sepn of aftertreatment.In addition, lime is incorporated into less than in the pathogenic micro-organism of eliminating in high temperature aerobic treatment device, makes pH be raised to 12.Just, lime solidification is to stablize inactivation and technology residual organic matter.
Flocculation sediment is drug for injection and the technology of removing anhydrate middle dissolved material or suspended solids material.Flocculation sediment is divided into 3 steps: flocculate the thick flocculation that thin flocculation that cohesion produces and precipitation produce by drug for injection.Flocculation step in 3 steps has been injected particle or dissolved ion or the bigger suspended solids instability that medicine or condensing agent make the microcosmic colloid type, thereby forms and be easy to the flocculation of precipitation precipitation.
With reference to figure 3, lime solidification equipment by chemical flocculation technology and dewatering unit solidify and are included in the high concentrated, solid that suspends in the animal residue, produce lime manure, and comprise flocculation sample control pond, first flocculation basin, residual solution storage pool, second flocculation basin and filter.In flocculation sample control pond, introduce white lime so that the TAO treating water carries out alkaline hydrolysis, make pH be increased to 12.0 then from 9.0.Introduce molysite and polymeric coagulant then and order about a large amount of flocculations, filter plays the effect of agglomerative waste water being carried out solid-liquid separation.
Reverse osmosis (RO) film that uses in reverse osmosis (being a kind of membrane separation process) can be as the assembly of for example ultra-filtration type.Reverse osmosis (RO) film is divided into tubular type (T), hollow fiber type (HFF), platypelloid type (PF) and spiral type (SW).These forms are substantially the same with ultra-filtration.Reverse osmosis (RO) film has the minor groove of about 0.0005 μ m, and it repels ion component, and is promoted by the pressure of 200～600psi.The operating speed of RO film is generally 3～20g/sfd, but various scopes are arranged.
With reference to figure 4, it is the schema of the physical purification technology of explanation in the reverse osmosis membrane separation device, is being selectively permeable membrane by the reverse osmosis membrane in the reverse osmosis membrane separation device of physical purification technology, and it can remove dissolved solid, for example metal-salt.The reverse osmosis membrane separation device comprises that pre-treatment pump and high-pressure pump are with the pressure of injection greater than osmotic pressure.Here, the working pressure pump is separated into treating water and condensed water with waste water.Use rhodia and aromatic polyamides as mould material.The exchange cycles of film is about 2 years.When the amount for the treatment of water reduces, film is cleaned with cleaning liquor.Brush tubulose (tubular) or cast (pipe-shaped) film is removed resistates with brush.When washing is no longer valid, more renew film.By processed on the water theory that comes on the R/O systems pumps, and the rate of recovery is 100%, but owing to pollute, 15～25% inflows are recycled to the condensed water problem, and system is configured to multilevel system.The aperture of general reverse osmosis membrane is 0.0005～0.002 μ m.General reverse osmosis membrane (drives under 20～27atms) the pressure at 300～400psi.In order to prevent to pollute, the inflow water preprocessing of introducing become common turbidity be 1NTU (nephelometric turbidity unit) or below.Need chemical-treating facility, settling apparatus, filter plant as pre-processing device, and the size of last core strainer is 5 μ m.
Various microorganisms breed in the animal residue of abundant nutrition is arranged and propagate.Wherein, there is pathogenic micro-organism.Therefore, it is impossible being recovered in the mud that produces in the animal residue processing, but generally can decompose and aging the recovery later.The thermophilic aerobic fermentation device uses the source of the organic substance of animal residue as energy, and owing to preserve the elimination pathogenic micro-organism by spontaneous heating high temperature, thereby stablized mud and solved the problem that reclaims mud.
Thermophilic aerobic fermentation drives with intermittent type, and flows into every day or discharge and estimate flow once.Temperature during the injection original waste water is 4～24 ℃, and after reaction finished 24 hours, the internal temperature of reactor was raised to about 60 ℃, continues to keep isothermal temperature then.Because all pathogenic micro-organisms were eliminated in 30～120 minutes under 60 ℃ or lower temperature, therefore pathogenic micro-organism is eliminated by 100% ground when using this thermophilic aerobic fermentation device to produce the liquid fertilizer of animal residue.
Existing lime stabilization method can be used when the water content of introducing mud is 75～85% (concentration of solid matter is 15～25%).Therefore, the most of water content that are difficult to discharge in livestock farms are that 75～90% animal residue uses the lime stabilization method.Therefore, developed the new harmless and safe lime stabilization method of guaranteeing, be used for water content greater than 95% animal residue.
[embodiment 1]
The applicant has prepared animal residue transaction module device according to said structure, and in about 5 months time, uses 5m
3The treatment capacity in/sky is tested.With reference to figure 2, it is the schema of the bio-oxidation technology of explanation in the thermophilic aerobic fermentation device, and the movement storage pool has whipping appts, and its capacity is 37m
3, be able in the thermophilic aerobic fermentation device to handle solids concn and be 5～8% movement, and use transfer pump that movement is transferred to the thermophilic aerobic fermentation device from the movement storage pool.Be 60m by pneumatic pump to thermophilic aerobic fermentation device injection volume then
3/ time air, and under 55～65 ℃ actuation temperature, handle movement.The input of EM is 4.0～5.0m
3/ day, and the output of EM is 3.0～4.0m
3/ day.
The waste water of discharging from the thermophilic aerobic fermentation device is transported to the fermented liquid storage pool, and the fermented liquid storage pool has whipping appts, and its capacity is 37m
3
Use transfer pump that movement is delivered to the mixture pond from the fermented liquid storage pool.There is whipping appts in the mixture pond, and its capacity is 10m
3In the mixture pond, add 40kg/m to movement
3White lime and 5.0kg/m
3Molysite makes it time handle in pH12～12.5 then.
The movement that to handle in the mixture pond sends in first flocculation basin.It is 6.0m that first flocculation basin has its capacity of whipping appts
3, and add 0.50kg/m
3Polymkeric substance.The movement of handling in first flocculation basin is delivered to dewatering unit once more and is carried out processed, and then is sent to second flocculation basin.Second flocculation basin has whipping appts, and its capacity is 10m
3, and to movement adding 5.0kg/m
3Molysite, and add 0.25kg/m extraly
3Polymkeric substance.Handle movement then in pH10～10.5 time.Then, in dewatering unit, movement is carried out processed, then it is sent to once more filtrate storage pool with whipping appts.
Use the transfer pump in this filtrate storage pool that movement is sent in the reverse osmosis membrane separation device, and be sent to 37m once more
3The concentrated solution storage pool with whipping appts in.
[embodiment 2]
To according to the present invention treating water analyze.
Animal residue is collected on pig farm by the Gungchon-ri that is positioned at Korea S, Munmag-eup, Wonj u-city and Gangwon-do.According to the present invention, animal residue is carried out thermophilic aerobic fermentation processing, lime solidification processing and reverse osmosis isolation to be handled, in the resource recovery process of animal residue, animal residue is produced the lime manure and the spissated liquid fertilizer of particle pattern, and generate treating water.Here, based on the wastewater discharge standard analyzing and processing water of public processing space.According to the waste discharge standard, BOD, COD have been measured
Cr, COD
Mn, SS, TN, TP and intestinal bacteria (colitis germ).According to the mean concns for the treatment of water, BOD is 16mg/L, COD
MnBe 25mg/L, SS is 2mg/L, and TN is 44mg/L, and TP is 0mg/L, does not detect intestinal bacteria.Just, treating water demonstrates the good numerical value that is fit to the waste discharge quality standard.
Table 1
Compare inflow/effluent by the draining water quality standard
| Classification | BOD | COD | SS | TN | TP | Intestinal bacteria |
| Inflow | 35,000 | 25,877 | 40,927 | 4,864 | 1,082 | 47,837 |
| Effluent | 16 | 25 | 2 | 44 | 0 | Negative |
| Emission standard | 30 | 50 | 30 | 60 | 8 | 3,000 |
Unit: mg/L
[embodiment 3]
Measure the efficient of removing of pollutent.
In the result that the movement identical with embodiment 2 analyzed, the BOD of initial condition and COD
CrConcentration be respectively average 35,000mg/L and 25,877mg/L, its concentration than the waste water that flows into public processing space is higher relatively.The BOD of initial condition and COD
CrThe concentration reason that is relatively higher than the concentration of the waste water that flows into existing public processing space be that the concentration of the waste water produced of actual farm has reflected its practical situation.
Table 2 shows the concentration of inflow, cell process and removes efficient.In table 2, when each processing unit technology remove efficient when in whole technology, representing, can see remove efficient be 99% or more than.
Table 2
Table 2 has shown Pollutant levels and processing efficiency.
[embodiment 4]
The thermophilic aerobic fermentation device shows the effect of eliminating pathogenic micro-organism.
High density the deleterious pathogenic micro-organism of the mankind is included in animal residue and the livestock refuse (skin of respiratory organs excretory secretory product, urine, feather and livestock in the dust).The excremental amount of every livestock (for example ox or pig) is much larger than the mankind's movement, and the movement amount of per unit area is very high, because the density of penkeeping is very high.Therefore, for environmental pollution and public health, ox or pig should be managed effectively.This system drives 24 hours under 55 ± 5 ℃ or in the longer time, higher temperature drives down.Because the temperature of reaction in this system is very high, animal residue changes into limpid liquid fertilizer, and wherein all intestinal bacteria and deleterious pathogenic micro-organisms that are included in the animal residue are eliminated, and have shown experimental result in Fig. 5 to Fig. 7.
Except statutory standards, when using animal residue fermentation fertilizer (extract) and solid dung on land, whether decomposition of poisonous microorganism and ripening degree and its survive is very important.Now, C.Parvum and G.Lamblia are the microorganisms that causes the water system communicate illness.From nineteen eighty-three, C.Parvum is regarded as the infectious major cause of water system, and from the angle of the water hygiene quality of existing tap water, C.Parvum has been regarded as most important pathogenic micro-organism.In addition, there be the C.Parvum of minimum 0.8oocysts/L in the water route to maximum 112.0oocysts/L.Therefore, report points out to cause colony diarrhoea (Tsushima, 2001; LeChevallier, 1991; Rose, J.B., et al1991).
Usually, though cyst of roundworm (cysts) and egg capsule have very strong resistibility to thimerosal, especially, the egg capsule of known C.Parvum has very strong resistibility to chlorine disinfectant.But, WHO (1996) and Fujino, et al (2002) etc., report C.Parvum and G.Lamblia are very weak to adding heat resist, in the example of C.Parvum, report that it was killed in 30 seconds under 55 ℃, are killed in 15 seconds under 60 ℃.In the example of the liquid fertilizer that uses this thermophilic aerobic fermentation system handles, cause by the microorganism of water-borne transmissible disease deactivatedly, therefore removed the secondary pollution that causes by animal residue.
[embodiment 5]
Measurement use lime solidification device is removed processing efficiency and the performance with separating organic substances and phosphorus.
The present invention by use white lime make the hydrogen ion concentration (pH) of solution be raised to pH12 or more than, with stable and impel remaining undecomposed organism, colourity inductor and the alkaline hydrolysis of the pathogenic micro-organism in the thermophilic aerobic fermentation device, do not removed, and flocculate/remove heavy metal, SS and TP, and produce the organic calculus lime manure.Table 3 shows the inflow of lime solidification method, the concentration and the processing efficiency for the treatment of water.According to the mean concns of inflow, BOD is 1,119mg/L, COD
MnBe 2,510mg/L, SS are 150mg/L, and TN is 2, and 958mg/L, TP are 7mg/L.Can find out that SS, BOD and TP have height respectively and remove efficient.
Table 3
Be presented at the concentration and the processing efficiency of inflow/effluent in the lime solidification device.
| Project | Inflow (mean concns) | Treating water (mean concns) | Processing efficiency |
| BOD5 | 6,627-10,296(8,286) | 895-1,390(1,119) | 86.5 |
| CODMn | 8,017-13,560(10,039) | 2,004-3,390(2,510) | 76.0 |
| SS | 25,696-50,162(38,117) | 100-300(150) | 99.6 |
| TN | 2,431-5,198(3,892) | 1,848-3,950(2,958) | 24.0 |
| TP | 609-1,301(974) | 510(7) | 99.3 |
As mentioned above, the present invention can make the animal residue that is considered to environmental pollutant it remain in the waste discharge standard aspect quality, thereby the eutrophication of anti-water-stopping system.In addition, the present invention can produce liquid fertilizer, lime manure and high density liquid phase fertilizer, wherein liquid fertilizer is to obtain by using the thermophilic aerobic fermentation treatment process to eliminate the pathogenic micro-organism that is included in the animal residue, lime manure is by using solidifying process to obtain, high density liquid phase fertilizer is by using reverse osmosis membrane separation technology to obtain, then by reverting in the Agricultural land as liquid fertilizer and resolvent, the system of processing and recovery animal residue is provided thus, and it can realize circulative environmental protection agro-industry.
And in the present invention, animal residue dilutes without initial condition, but handles by simple process combination.Therefore, because processing is short dead time, the present invention is economical, and advantage provided by the invention is that it only needs land for building cost seldom.
Claims (7)
1. the treatment process of an animal residue, the treatment process of described animal residue may further comprise the steps:
Thermophilic aerobic fermentation technology;
Use the chemical flocculation technology of lime; With
Use the physical purification technology of reverse osmosis membrane separation technology.
2. the treatment process of animal residue according to claim 1, wherein said thermophilic aerobic fermentation technology makes animal residue pass through movement storage pool and thermophilic aerobic fermentation device, is discharged into the fermented liquid storage pool then.
3. the treatment process of animal residue according to claim 1, wherein said chemical flocculation technology makes by thermophilic aerobic fermentation technology and leaves material in the fermented liquid storage pool in, by mixture pond, first flocculation basin, dewatering unit, second flocculation basin and dewatering unit, be discharged to the filtrate storage pool then.
4. the treatment process of animal residue according to claim 1, the physical purification technology of wherein using reverse osmosis membrane separation is by reverse osmosis membrane separation device and concentrated solution storage pool.
5. one kind changes into the method for stable liquid fertilizer and lime solid phase fertilizer with animal residue, and described animal residue method for transformation may further comprise the steps:
Use thermophilic aerobic fermentation device and lime solidification device, wherein microorganism self heat production and need not extraneous heat supply, thereby keep high ambient conditions;
Add lime to stablize animal residue to animal residue;
Eliminate the pathogenic micro-organism that is present in a large number in the animal residue and pass through water-borne pathogenic microorganism; With
Animal residue is changed into stable liquid fertilizer and lime solid phase fertilizer.
6. the method for transformation of animal residue according to claim 5, wherein said microorganism self heat production is in 50-60 ℃ to keep temperature.
7. the method for transformation of animal residue according to claim 5, wherein said adding lime with the stable hydrogen ion concentration (pH) that means solution become pH 12 or more than.
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| KR20060071706 | 2006-07-28 | ||
| KR1020060071706A KR100747682B1 (en) | 2006-07-28 | 2006-07-28 | Method for treatment of livestock excrements using thermophilic aerobic fermentation, lime solidification and separation by reverse osmosis membrane |
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| WO2017006343A2 (en) * | 2015-07-03 | 2017-01-12 | Gangotree Eco Technologies Private Limited | Method and system for converting animal excreta into energy and useful by-products |
| KR102185297B1 (en) | 2019-02-15 | 2020-12-01 | 상지대학교산학협력단 | Liquid fertilizer production method and high-quality liquid fertilizer based on lfqc and chlorella microbiological fertilizer manufacture method |
| FR3120864B1 (en) * | 2021-03-16 | 2023-10-13 | Toopi Organics | Process for treating human or animal urine by dilution and fermentation and uses of the urine obtained in particular as a fertilizing material |
| FR3120863B1 (en) * | 2021-03-16 | 2023-10-06 | Toopi Organics | Process for treating human or animal urine by basification and uses of the urine obtained in particular as a fertilizing material |
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| CN1189482A (en) * | 1997-01-28 | 1998-08-05 | 杨大允 | Method for manufacturing fertilizer utilizing waster material |
| CN1613829A (en) * | 2004-11-18 | 2005-05-11 | 张仲元 | Granular fertilizer from human excrement and production thereof |
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| JPS62100494A (en) * | 1985-10-29 | 1987-05-09 | 興陽産業株式会社 | Purification of human excretion waste water by solid-liquid separation and organic fertilizer production |
| KR950004165B1 (en) * | 1992-06-10 | 1995-04-27 | 김성우 | Waste water treatment method |
| JP2000001387A (en) | 1998-06-10 | 2000-01-07 | Sato Yotonjo:Kk | Environmental conservation type plant for appropriate treatment of domestic animal excrement |
| US20030057160A1 (en) | 2001-09-26 | 2003-03-27 | Williams Derek P. | Method for treating hog and animal waste |
| EP1507745B1 (en) | 2002-05-28 | 2007-04-25 | Feralco AB | Method for treatment of sludge from waterworks and wastewater treament plants |
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| CN1189482A (en) * | 1997-01-28 | 1998-08-05 | 杨大允 | Method for manufacturing fertilizer utilizing waster material |
| CN1613829A (en) * | 2004-11-18 | 2005-05-11 | 张仲元 | Granular fertilizer from human excrement and production thereof |
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