CN104437035A - Multi-stage exhausting and deodorization device for livestock and poultry houses - Google Patents

Multi-stage exhausting and deodorization device for livestock and poultry houses Download PDF

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Publication number
CN104437035A
CN104437035A CN201410754836.0A CN201410754836A CN104437035A CN 104437035 A CN104437035 A CN 104437035A CN 201410754836 A CN201410754836 A CN 201410754836A CN 104437035 A CN104437035 A CN 104437035A
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China
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module
livestock
poultry house
exhaust
poultry
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Pending
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CN201410754836.0A
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Chinese (zh)
Inventor
汪开英
李庭苇
王乐
吴成阳
王昊
潘乔纳
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN201410754836.0A priority Critical patent/CN104437035A/en
Publication of CN104437035A publication Critical patent/CN104437035A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a multi-stage exhausting and deodorization device for livestock and poultry houses. The multi-stage exhausting and deodorization device comprises an exhaust outlet formed in a livestock and poultry house wall, an exhaust suction fan, an exhaust collection pipeline and a three-stage filtering device used in exhausting of waste gas from livestock and poultry houses; air is exhausted from the livestock and poultry houses by the fan in a negative-pressure manner; the deodorization device comprises a dust-barrier and flow guide module, a spray module and a biofiltering module, an underground drain outlet is connected below the spray module, a soil humidity sensor is arranged in the biofiltering module, and an automatic rainproof roller blind is arranged above the biofiltering module. The specific dimensions of the livestock and poultry houses can be calculated and designed according to the observed data of a proposed place, and are evaluated, not only can odor be effectively prevented from emitting to outside air and polluting air, but also the propagation of livestock and poultry diseases can be prevented while the exhausting and cleaning are achieved, and the multi-stage exhausting and deodorization device for livestock and poultry houses has higher economic benefits in the long run compared with the traditional exhausting and deodorization manner of the livestock and poultry houses.

Description

A kind of multistage exhaust odor removal for poultry house
Technical field
The present invention relates to livestock-raising field, specifically relate to a kind of exhaust odor removal for poultry house.
Background technology
China is livestock and poultry big country always, all very surprising to the demand of all kinds of meat such as pork, mutton, chicken.Along with the continuous growth of the growth in the living standard of our people, the foundation of balanced diet idea and population base, China is in the vigorous rise period for being consumed in the quite a while of processed meat food stuff, have stimulated the prosperity and development of livestock and poultry breeding industry.But along with the fast development of poultry industry and intensive culture become main breeding way, livestock and poultry concentrate the phenomenon producing a large amount of stench and contaminated air environment also more and more serious.For " prevention and control of air pollution action plan " that response China State Council put into effect in September, 2013, it is process to stench that poultry industry cultivates the matter of utmost importance needing solution badly.
The excremental pollutant component of livestock and poultry is very complicated, mainly comprises: nitrogen, the water eutrophication materials such as phosphorus; The foul gas such as ammonia, hydrogen sulfide, methane, methylamine, dimethyl sulfide; Iron, the mineral elements such as zinc, manganese, cobalt, iodine; The heavy metal substances such as copper, arsenic, mercury, selenium; The animal medicine residues such as antibiotic, antioxidant, hormone; The infectious diseases common to human beings and animals germ such as anthrax, bird flu, No. five diseases, Bruce bacterium disease, tuberculosis, also has dust in some Exhaust Gas etc. in addition.What wherein need mainly to focus on is ammonia, hydrogen sulfide, VOCs, stench, microorganism etc.
At present, main both at home and abroad deodorization technology has absorption method, deodorant method, thermal oxidation method, washing method, biofiltration process and oxonium ion group deodorization process etc.Most domestic plant still continues to use traditional deodorizing method, and as ventilation, sprinkling etc., and these method efficiency are low and easily cause secondary pollution.Bio-filter technology adopts filter to be carried the suspended particles isolated by filtration of malodor mixture, then utilize in biofilter the microorganism being attached to filter material surface that foul gas is carried out biodegradation, thus provide the energy and nutrient for the metabolism of himself, the investment of this deodorizing method is moderate, energy consumption is little, instant effect, operating cost ground, efficiency are high, non-secondary pollution, particularly be applicable to the foul smell that process livestock and poultry farm comes out, therefore also become the study hotspot in this field current.
Publication number be CN103721564A patent document discloses a kind of photocatalysis-ClO 2coupling odor removal, comprises separation net and spray equipment, the odorant weighed by the photocatalyst for degrading air be arranged on the separation net around deodorization space, and to deodorization space spray ClO 2thimerosal.Although this invention take daylight as light source reduce deodorizing cost, directly unavoidably secondary pollution is occurred to open environment disinfected deodorizing.
Publication number be CN101336616A patent document discloses a kind of deodorization dehydrating device for cultivation, poultry house air outlet is offered on poultry house top, poultry house air inlet connects an air heater, and air heater air inlet is arranged on outside poultry house, and poultry house air inlet is arranged in poultry house; Air heater front end or rear end or poultry house air outlet install a fan.But this device focuses on the deodorization, dehumidification application of front end, and back-end processing and discharge are not too much considered.
Therefore, from current angle, also do not have a kind of desirable technique can remove pig house foul smell effectively economically and avoid secondary pollution occurs.The exhaust deodorizing that the present invention adopts, by unified collection, spray, biofiltration, exhaust, avoids the pollution of environment to external world, combines biological treatment and Multi-stage module assembled form simultaneously, proposes the multistage exhaust odor removal of a set of pig house innovatively.
Summary of the invention
In order to solve the malodor problem in poultry house, the invention provides the multistage odor removal of a kind of exhaust for poultry house, thus improving Livestock Production Pollution problem.
Adopt following technical scheme: a kind of multistage exhaust odor removal for poultry house, comprises the exhaust outlet be arranged on poultry house wall, blower fan of bleeding, air draft collection conduit and waste gas discharge three-level filter device during poultry house for this reason; Assembling of bleeding is held before the filtering means, filter is divided into dust-break water conservancy diversion module, spray module and biofiltration module, dust-break water conservancy diversion module is the first order, subdrainage mouth is connected below spray module, it is characterized in that: in poultry house, air is first by ventilation gas collection module, carry out exhaust ventilation by blower fan to bleed, air draft collection conduit is entered by exhaust outlet, three-level filter device then by comprising dust-break water conservancy diversion module, spray module and biofiltration module carries out filtration treatment, outside final discharge house.
Further, described biofiltration module adopt mass ratio be the compost of 30:70 and wood chip mixture as filler, described compost is plant's organic solid castoff, adds livestock manure fermented bacterium, after being warming up to 60-80C, fermenting and forms for 5-10 days; In packing layer, soil humidity sensor is installed.
Further, described ventilation gas collection module comprises exhaust outlet, air draft collection conduit and blower fan of bleeding.
Further, described dust-break water conservancy diversion module adopts anticorrosive wood material to build, and this device is discharged foul smell and had guide functions simultaneously.
Further, described spray module adopts atomizing spray.
Further, described air draft collection conduit is by the exhaust outlet enclosure of pig house air draft side.
Further, the quantity of described exhaust outlet and size and position are calculated by surveyed parameter on the spot and to determine later.
Further, above described biofiltration module, automatic rainproof roller shutter is installed.
Further, described soil humidity sensor is arranged on the height of filler half; Filler bottom has a fixed gap, and has plastic wire to support filler.
Further, the waste gas in described air draft collection conduit enters filter by exhaust fan, the mode that intake and exhaust ventilating system adopts forced draft, ventilation and negative pressure ventilation combines.
The quantity of described exhaust outlet and size and position are determined after calculating.Concrete calculating relate to the temperature at the air outlet place gathered on the spot, humidity and air speed data and exhaust outlet propose seated position and size information, propose fixed ventilating opening size and number and coherent reference data.Mainly according to the large philosophy of mass conservation law, law of conservation of energy and the law of conservation of momentum three.
The corresponding mass-conservation equation set up is:
ρ is density, and t is the time, and u is velocity, and u, v and w are the component of velocity u in x, y and z direction.
Take temperature as the energy conservation equation of variable:
Deployablely be:
Wherein, Cp is specific heat capacity, and T is temperature, and k is the heat transfer coefficient of fluid, and ST is the endogenous pyrogen of fluid and is converted to the part of heat energy, sometimes referred to as viscous dissipation item because of viscous effect fluid mechanical energy.
Momentum conservation equation on x, y, z direction:
In formula, p is the pressure on fluid micro unit; etc. being the component acting on the viscous stress τ on micro unit surface produced because of molecular viscosity effect; Fx, Fy, Fz are the muscle power on micro unit respectively.
Because the air draught in pig house environment is turbulence form substantially, its corresponding turbulence model equation can be set up:
G kfor the tubulence energy that average velocity gradient causes; G bfor the tubulence energy that buoyancy causes; Y mfor the impact of compressible turbulence pulsation expansion on total dissipative shock wave; α kand α εthe inverse of effective turbulent flow Prandtl of tubulence energy k and dissipative shock wave ε respectively.
Calculate the distribution situation of corresponding poultry house internal contamination thing, determine emission path, thus finally determine exhaust outlet position, and reach the optimization of toxic emission by rational quantity and size design.
Described spray module adopts atomizing spray.With a large amount of ammonia can be made after Water spray soluble in water, and atomizing can dissolve ammonia in the scope more strengthened, thus gets rid of most of ammonia.Fall to ground after dust also can being made to be adsorbed by atomizing spray, also prevent simultaneously and be attached to the aerocolloidal diffusion of dust surface microorganism.
Described biofiltration module adopt mass ratio be the compost of 30:70 and wood chip mixture as filler, described compost is plant's organic solid castoff, adds livestock manure fermented bacterium, after being warming up to 60-80C, fermenting and forms for 5-10 days; Be provided with soil humidity sensor in packing layer, soil humidity sensor can be arranged on the height of filler half; One fixed gap is arranged at filler bottom, and has plastic wire to support filler.
Inherently organic solid castoff is produced in plant, as feces of livestock and poultry etc., livestock manure fermented bacterium also claims compost quick composting leavening, has the effect making feces of livestock and poultry deodorizing, Rapid Fermentation and become thoroughly decomposed, complete the thorough fermentation of humified material after fermentation, become thoroughly decomposed, sterilizing, deodorisation process.Again through about one week fast dewatering, kill the process of weeds seed and stabilisation, rubbish humified material gross mass greatly reduces, Escherichia coli, worm's ovum and weeds seed are all killed, humified material overstrike, loose, odorless, tasteless, the biological activity fertilizer of water content about 25%.In the present invention, both for biological filtering module provides filler material, livestock manure fermented bacterium itself had naturally been attached in filler and had formed biosphere simultaneously.
The waste gas of discharging enters air draft collection conduit by exhaust fan of bleeding through exhaust outlet, stops a part of dust by dust-break water conservancy diversion module, more successively through spray module and biofiltration module, finally completes exhaust.Wherein, spray module adopts atomizing spray, by producing vaporific water droplet, and dust in sedimentation foul gas, and make the ammonia gas react in water droplet and foul smell, regulate the humidity entering the foul gas of biological filter system simultaneously.Through biofiltration module, waste gas bottom packing layer from bottom to top uniformly across filler, the microbial layer in filler.In this microbial layer, foul smell is oxidized resolves into carbon dioxide and water, and the mineral salt of formation is stayed in filler and organism.Meanwhile, in order to obtain filler moisture information in time, soil humidity sensor is installed in biofilter inside.Sensor is arranged on the position of filler half height.
Compared with prior art, beneficial effect of the present invention is:
The exhaust that multistage exhaust odor removal provided by the invention collects poultry house by pipeline is carried out unifying process, can more thoroughly, efficiently.The three-level filter device adopted, efficient deodorizing.First stop a part of dust by dust-break water conservancy diversion module, make its sedimentation, then adopt sprinkling dust-removing device, remove a large amount of dust and ammonia by spray form water droplet, and regulate foul smell humidity, then employing biofilter removes the odorant pollutant such as hydrogen sulfide, VOC in foul smell.The method cost is low, the buried regions thickness of biofilter and shape can according to the actual conditions design-builds of poultry house, and filler is wherein changed for 2 ~ 3 years, strong adaptability, collection wind, spray and the equal modularized design of biofiltration, easy for installation, can also prevent livestock and poultry from propagating while purifying exhaust gas.
Accompanying drawing explanation
Fig. 1 is the integral installation schematic diagram of the present embodiment.
Fig. 2 is the local scheme of installation of filter in the present embodiment.
Fig. 3 is the partial schematic diagram of the present embodiment biofiltration module.
In figure, 1, pig house, 2, exhaust outlet, 3, air draft collection conduit, 4, blower fan, 5, filtering module, 51, shower nozzle, 6, rainproof automatic curtain, 7, subdrainage mouth, 8, biofilter, 81, shower nozzle, 82, packing layer, 83, plastic wire, 84, soil humidity sensor.
Detailed description of the invention
See accompanying drawing.The present embodiment is arranged on the air draft collection conduit 3 of exhaust outlet 2 on pig house 1 body of wall and dust-break water conservancy diversion exhaust outlet to comprise, described exhaust outlet 2 is provided with nine, and air port size is diameter 275mm; The malleation frequency conversion centrifugal blower of model 4-68 type NO. 6.3D selected by described blower fan 4, and described assembling is between air draft collection conduit and filtering module; Waste gas is bled through blower fan 4 and is entered air draft collection conduit 3 by exhaust outlet 2, then is processed by filtering module 5 and biofilter 8, finally completes exhaust air deodorization exhaust process.
Deodorization structure comprises filtering module 5 and biofilter 8, described filtering module 5 adopts atomizing to spray absorption, shower nozzle 51 adopts waterfog head, ensure that the foul smell extracted out can contact with water smoke completely, make the abundant formation ammoniacal liquor soluble in water of the ammonia in foul smell, and entered wastewater treatment pipeline by subdrainage mouth 7 through collecting ditch.Dust is also stopped through water curtain in exhaust simultaneously, drops to ground and is removed.
Through spray process, the pretreatment of dust removal humidification is carried out to waste gas, make foul smell bottom packing layer 82 from bottom to top uniformly across filler, namely through biofilter 8, the biosphere that formed in filler due to microbial adhesion through one of foul smell in this process, on this biosphere, foul smell oxidation Decomposition is become carbon dioxide and water by microorganism, the mineral salt formed is stayed in filler and organism, and clean air leaves biofilter 8.The filler employing mass ratio of packing layer 82 is compost and the wood chip of 30:70, wood chip has the effect providing space and structural support, compost provides necessary nutriment for the normal vital movement of microorganism, what adopt is the organic fertilizer fermentation special bacteria that Shijiazhuang water prestige company produces, the effect of water storage, moisturizing can be played, separately have plastic wire 83 to support filler.The thickness of filler is decided to be 400mm, adopts the EBCT(gas hold-up time of 5s), soil humidity sensor 84 is installed to obtain filler moisture information in time at the height of filler half.The high temperature in summer can make biofilter 8 water content too low, so need to install five shower nozzles 81 on the top of biofilter so as whole biofilter 8 to be carried out fully, even humidification.Winter does not then generally need shower nozzle 81 to enter extra humidification to it.But consider geography and climate reason, southern area generally can rain in torrents by typhoon influence in summer, for preventing biofiltration transposition to be destroyed, then above biofiltration transposition, automatic rainproof roller shutter 6 is installed.
Waste gas to be bled by blower fan 4 from pig house 1 and is entered air draft collection conduit 3 by exhaust outlet 2, and module 5 and biofilter 8 process after filtration successively, and handled ammoniacal liquor enters drainage pipeline by subdrainage mouth 7, and foul smell is discharged from biofilter 8 by process.

Claims (10)

1. for a multistage exhaust odor removal for poultry house, comprise the exhaust outlet be arranged on poultry house wall, blower fan of bleeding, air draft collection conduit and waste gas discharge three-level filter device during poultry house; Assembling of bleeding is held before the filtering means, filter is divided into dust-break water conservancy diversion module, spray module and biofiltration module, dust-break water conservancy diversion module is the first order, subdrainage mouth is connected below spray module, it is characterized in that: in poultry house, air is first by ventilation gas collection module, carry out exhaust ventilation by blower fan to bleed, air draft collection conduit is entered by exhaust outlet, three-level filter device then by comprising dust-break water conservancy diversion module, spray module and biofiltration module carries out filtration treatment, outside final discharge house.
2. a kind of multistage exhaust odor removal for poultry house according to claim 1, it is characterized in that, described biofiltration module adopts mass ratio to be that the compost of 30:70 and wood chip mixture are as filler, described compost is plant's organic solid castoff, add livestock manure fermented bacterium, after being warming up to 60-80C, fermenting and form for 5-10 days; In packing layer, soil humidity sensor is installed.
3. a kind of multistage exhaust odor removal for poultry house according to claim 1, it is characterized in that, described ventilation gas collection module comprises exhaust outlet, air draft collection conduit and blower fan of bleeding.
4. a kind of multistage exhaust odor removal for poultry house according to claim 1, is characterized in that, described dust-break water conservancy diversion module adopts anticorrosive wood material to build, and this device is discharged foul smell and had guide functions simultaneously.
5. a kind of multistage exhaust odor removal for poultry house according to claim 1, is characterized in that, described spray module adopts atomizing spray.
6. a kind of multistage exhaust odor removal for poultry house according to claim 1, it is characterized in that, described air draft collection conduit is by the exhaust outlet enclosure of pig house air draft side.
7. a kind of multistage exhaust odor removal for poultry house according to claim 1, is characterized in that, the quantity of described exhaust outlet and size and position are calculated by surveyed parameter on the spot to be determined later.
8. a kind of multistage exhaust odor removal for poultry house according to claim 1, is characterized in that, install automatic rainproof roller shutter above described biofiltration module.
9. a kind of multistage exhaust odor removal for poultry house according to claim 2, it is characterized in that, described soil humidity sensor is arranged on the height of filler half; Filler bottom has a fixed gap, and has plastic wire to support filler.
10. a kind of multistage exhaust odor removal for poultry house according to claim 3, it is characterized in that, waste gas in described air draft collection conduit enters filter by exhaust fan, the mode that intake and exhaust ventilating system adopts forced draft, ventilation and negative pressure ventilation combines.
CN201410754836.0A 2014-12-11 2014-12-11 Multi-stage exhausting and deodorization device for livestock and poultry houses Pending CN104437035A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104920234A (en) * 2015-05-22 2015-09-23 江苏省农业科学院 Pig house capable of reducing pollutant discharge
CN106665373A (en) * 2016-12-28 2017-05-17 苏州倍儿壮养殖装备科技有限公司 Livestock and poultry breeding shed ventilating device
CN106804436A (en) * 2017-02-03 2017-06-09 河南牧业经济学院 Poultry house high-level subway ventilating system
CN107032559A (en) * 2017-04-28 2017-08-11 轩脉家居科技(上海)有限公司 A kind of livestock-raising sewage-treatment plant
CN108585962A (en) * 2018-06-12 2018-09-28 齐鲁工业大学 The method, apparatus and system of foul smell during removal feces of livestock and poultry aerobic fermentation
CN109042347A (en) * 2018-08-07 2018-12-21 凤台县正祥农业科技发展有限公司 A kind of pig farm ventilating deodoring system and its deodorization device
CN110170247A (en) * 2019-06-28 2019-08-27 陈赫然 A kind of livestock and poultry farm give up in odor purification system and its application method
CN110292850A (en) * 2018-11-06 2019-10-01 杭州嘉苗农业开发有限公司 Farm's Odor control cleaning equipment
CN114177757A (en) * 2021-12-10 2022-03-15 中冶华天工程技术有限公司 Municipal discharge port aerosol germ killing and foul gas collecting and removing device and method

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CN103056149A (en) * 2013-01-27 2013-04-24 广东南牧机械设备有限公司 Livestock harmless processor
CN103721564A (en) * 2013-12-31 2014-04-16 深圳先进技术研究院 Combined photocatalyst-ClO2 deodorization device and deodorization method adopting same
CN204320063U (en) * 2014-12-11 2015-05-13 浙江大学 A kind of multistage exhaust odor removal for poultry house

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104920234A (en) * 2015-05-22 2015-09-23 江苏省农业科学院 Pig house capable of reducing pollutant discharge
CN106665373A (en) * 2016-12-28 2017-05-17 苏州倍儿壮养殖装备科技有限公司 Livestock and poultry breeding shed ventilating device
CN106804436A (en) * 2017-02-03 2017-06-09 河南牧业经济学院 Poultry house high-level subway ventilating system
CN107032559A (en) * 2017-04-28 2017-08-11 轩脉家居科技(上海)有限公司 A kind of livestock-raising sewage-treatment plant
CN108585962A (en) * 2018-06-12 2018-09-28 齐鲁工业大学 The method, apparatus and system of foul smell during removal feces of livestock and poultry aerobic fermentation
CN109042347A (en) * 2018-08-07 2018-12-21 凤台县正祥农业科技发展有限公司 A kind of pig farm ventilating deodoring system and its deodorization device
CN110292850A (en) * 2018-11-06 2019-10-01 杭州嘉苗农业开发有限公司 Farm's Odor control cleaning equipment
CN110170247A (en) * 2019-06-28 2019-08-27 陈赫然 A kind of livestock and poultry farm give up in odor purification system and its application method
CN114177757A (en) * 2021-12-10 2022-03-15 中冶华天工程技术有限公司 Municipal discharge port aerosol germ killing and foul gas collecting and removing device and method
CN114177757B (en) * 2021-12-10 2023-11-17 中冶华天工程技术有限公司 Municipal exhaust aerosol germ killing and malodorous gas collecting and removing device and method

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Application publication date: 20150325