CN105169865A - Chicken farm waste treatment device - Google Patents

Abstract

The invention relates to a chicken farm waste treatment device, which includes an odor treatment system, a wastewater treatment system and a solid waste treatment system; the odor treatment system includes an odor collection pipe, a fan and an integrated device for odor treatment. The integrated treatment device includes photocatalytic oxidation zone, pickling zone, mist eliminator, activated carbon adsorption layer, exhaust fan and outriggers; the wastewater treatment system includes wastewater regulating tank, baffle type biological aerated filter, baffle type aeration The upper part of the biogas filter is cylindrical and the lower part is conical, including the downstream area, the upstream area and the sludge area; the solid waste treatment system includes a sludge thickening tank, a sludge filter press room, a solid waste mixing tank, Compost pool.

Description

Chicken farm waste treatment device

technical field

The invention relates to the technical field of environmental protection, in particular to a chicken farm waste treatment device.

Background technique

In recent years, my country's chicken industry has developed rapidly. During the operation of chicken farms, not only solid pollutants such as feces, but also waste water such as urine and flushing water, as well as air pollutants such as odor. Pollutants in chicken farm wastewater are mainly organic matter, suspended solids, nitrogen, phosphorus, sediments and pathogenic bacteria, etc., which belong to high-concentration organic wastewater. The content of ammonia nitrogen and suspended solids is high, accompanied by a foul smell. The pollutant content is 10 to 20 times that of general domestic wastewater. Pollutants from chicken farms may pollute the environment during collection, storage, transportation, treatment, and utilization. If they are not properly treated and disposed of, they will pose a great threat and harm to water, air, soil, and human health. , which will adversely affect the sustainable development of the chicken farm itself.

Contents of the invention

The technical problem to be solved by the present invention is: in order to solve the environmental pollution problem generated during the operation of the above-mentioned chicken farm, the present invention provides a chicken farm waste treatment device.

The technical scheme adopted by the present invention to solve the technical problem is: a chicken farm waste treatment device, including an odor treatment system, a waste water treatment system and a solid waste treatment system.

The odor treatment system includes an odor collection pipe, a fan, and an integrated odor treatment device; the integrated odor treatment device includes legs, a photocatalytic oxidation area, a pickling area, and a demister in sequence from the bottom of the device upwards , activated carbon adsorption layer and exhaust fan.

The photocatalytic oxidation zone is located at the bottom of the whole device; the photocatalytic oxidation zone is provided with an ultraviolet light generator and a catalytic device; the ultraviolet light generator includes a controller, a ballast, and an ultraviolet light tube ; The catalytic device is an aluminum-based TiO ₂ net, surrounded by an ultraviolet light tube, and the lower part of the photocatalytic oxidation zone is provided with an air intake pipe and an air distribution pipe for odor.

The pickling area is provided with an odor pickling assembly, and the odor pickling assembly includes a pickling liquid spray device located on the upper part of the odor pickling assembly, a pickling liquid storage device located at the lower part of the odor pickling assembly Putting tank and pumping the pickling solution in the pickling solution storage tank to the pickling solution circulation pump of the pickling solution spraying device.

The upper part of the pickling area is equipped with a mist eliminator, which collects the large liquid droplets in the gas and returns them to reduce the moisture in the gas. Its working principle is that the gas enters the mist eliminator and passes through a A series of curves are discharged from the top, and the water droplets, due to their mass and kinetic energy, fall straight down when passing through the curves, collide with the surface of the demister, and bounce back under the action of gravity.

The upper part of the demister is provided with an activated carbon adsorption layer, and activated carbon is arranged in the activated carbon adsorption layer. The activated carbon is required to have the advantages of developed pores, large specific surface area, fast adsorption speed, anti-friction, and wash resistance. It is found that the activated carbon becomes viscous and the activated carbon needs to be replaced in time when the gas velocity decreases.

Specifically, the middle of the sewage treatment plant odor treatment integrated device is cylindrical and the upper end is a conical tank. The tank is provided with an observation port and a maintenance and replacement port. The volume of the tank can be determined according to the gas to be treated. It depends on the amount, and it should be placed vertically.

In order to facilitate the discharge of the treated clean gas, an exhaust fan is installed at the uppermost conical tank of the sewage treatment plant odor treatment integration device.

Further matching with the cylindrical tank container, the cross section of the pickling solution storage tank is circular, and the pickling solution gathering device is arranged above the pickling solution storage tank, and the pickling solution gathering device The diameter of the lower end is smaller than the diameter of the uppermost part of the pickling solution storage tank, and the pickling solution gathering device can make the pickling solution gather and flow back to the pickling solution storage tank.

Further, the odor pickling assembly is also equipped with a pickling liquid adding device and a discharge device, and the pickling liquid adding and discharging device includes a pickling liquid tank and a stirring device, and the pickling liquid adding and discharging device passes through The pipeline and the valve are connected to the pickling liquid circulation pump.

Further, the pickling solution spraying device is a spiral spraying device; the sprayed liquid is misty, and the water mist intersects and merges without leaving any dead space, which is beneficial to expand the contact area between the odor and the solution, Improve absorption rate and absorption effect.

Preferably, the ultraviolet light tube is a high-intensity, high-ozone ultraviolet light tube.

As a further preferred device, the demister is a baffle plate demister or a swirl plate demister.

As a further preferred device, the bottommost part of the integrated odor treatment device is provided with three legs.

The waste water treatment system includes a waste water regulating tank and a baffle type aerated biological filter tank.

The wastewater regulating tank includes a water inlet pipe and a water outlet pipe for regulating the water quality and water quantity of the wastewater.

The upper part of the baffle type biological aerated filter is cylindrical, and the lower part is a conical structure, including a downflow area, an upflow area and a sludge area; the downflow area is located in the cylindrical structure of the baffle type biological aerated filter The middle part is a cylindrical structure, the upper part of the downstream area is provided with water inlet pipes and water distribution pipes, the middle part of the downstream area is provided with fillers, the lower part of the downstream area is provided with aeration pipes, and the bottom of the downstream area is provided with baffles. The longitudinal section of the flow plate is trumpet-shaped; the upper flow area is located at the periphery of the lower flow area and the upper part of the baffle, the middle of the upper flow area is provided with filler, the lower part is provided with an aeration pipe, and the outlet of the upper part of the upper flow area is provided with an overflow weir; The sludge zone is located at the bottom of the baffle type biological aerated filter, the lower part of the downstream zone and the upstream zone, and a sludge discharge valve is arranged at the bottom of the sludge zone.

The solid waste treatment system includes a sludge thickening tank, a sludge filter press room, a solid waste mixing tank, and a composting tank; The top is provided with a conical upper cover, and the top of the conical upper cover is equipped with a fan, which is connected to the odor treatment system through the odor collection pipe.

The beneficial effect of the present invention is that a method for waste treatment using the above-mentioned chicken farm waste treatment device has the following steps:

①Wastewater enters the wastewater regulating tank through the water inlet pipe to adjust the water quality and quantity.

② Then the waste water enters the downstream area of the baffled biological aerated filter through the water inlet pipe and the water distribution pipe. The air generated by the aeration pipe and the waste water meet in the filler to undergo a biochemical reaction. At the same time, the filler filters the waste water, and the waste water passes through the baffle After entering the upstream area, a biochemical reaction occurs in the filler, and the filler filters the waste water at the same time. The sludge generated in the downstream area and the upstream area sinks to the sludge area and is discharged through the sludge discharge valve at the bottom of the sludge area. The water treated by the type biological aerated filter is discharged up to the standard through the overflow weir.

③ The remaining sludge produced by the baffle type biological aerated filter is discharged into the sludge thickening tank.

④The concentrated sludge in the sludge concentration tank is pumped into the sludge filter press room, and the concentrated solution is discharged into the wastewater adjustment tank; the filtered sludge enters the solid waste mixing tank and is mixed with feces, and then enters the composting tank for recycling. Oxygen composting, the composted solids are used as agricultural fertilizers; the press filter liquid is discharged into the wastewater regulating tank.

⑤ Odor produced by breeding workshop, baffle type aerated biological filter, sludge thickening tank, sludge filter press room, solid waste mixing tank and composting tank is discharged to the odor treatment system by the fan through the odor collection pipe.

⑥Odor gas first enters the photocatalytic oxidation zone of the integrated device for odor treatment, and the high-intensity, high-ozone ultraviolet light tube emits high-energy ultraviolet light beams and ozone to irradiate the odor gas. The gas is decomposed synergistically, and the odorous pollutants in the odorous gas are decomposed into small molecular substances; the gas continues to rise and contacts with the pickling liquid sprayed by the pickling liquid spraying device, and the pollutants in the gas and the acid liquid undergo a chemical reaction. The reaction, the reaction product flows into the lower pickling liquid storage tank with the pickling liquid; the gas then enters the demister, where the liquid droplets in the gas are intercepted; then the gas enters the activated carbon adsorption layer, and the substances contained in the gas And the liquid droplets are intercepted and adsorbed here, and the odor is processed into clean gas to achieve standard discharge.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the schematic structural view of the odor treatment integrated device of the embodiment of the present invention;

Fig. 2 is the structural representation of the baffle type biological aerated filter of the embodiment of the present invention;

In Fig. 1 and Fig. 2: 1. photocatalytic oxidation zone, 1-1. ultraviolet light generator, 1-2. catalytic device, 1-3. air intake pipe, 1-4. gas distribution pipe, 2. pickling area, 2-1. Pickling solution spraying device, 2-2. Pickling solution storage tank, 2-3. Pickling solution circulation pump, 2-4. Pickling solution adding and discharging device, 2-5. Pickling Liquid accumulation device, 3. Demister, 4. Activated carbon adsorption layer, 5. Exhaust fan, 6. Outrigger, 7. Baffled biological aerated filter, 7-1. Downstream area, 7-2. Upstream Area, 7-3. Sludge area, 7-4. Inlet pipe of baffled biological aerated filter, 7-5. Water distribution pipe of baffled biological aerated filter, 7-6. Downstream area filler, 7- 7. Aeration pipe, 7-8. Baffle plate, 7-9. Upstream area filler, 7-10. Baffled biological aerated filter overflow weir, 7-11. Sludge discharge valve.

Fig. 3 is a process flow diagram of an embodiment of the present invention.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

As shown in Figures 1 to 3, a chicken farm waste treatment device according to the present invention includes an odor treatment system, a waste water treatment system and a solid waste treatment system.

The odor treatment system includes an odor collection pipe, a fan, and an integrated odor treatment device; the integrated odor treatment device includes a photocatalytic oxidation zone 1, a pickling zone 2, and a demister 3 from the bottom of the device upwards , activated carbon adsorption layer 4, exhaust fan 5.

The photocatalytic oxidation zone 1 is located at the bottom of the whole device; the photocatalytic oxidation zone 1 is provided with an ultraviolet light generator 1-1 and a catalytic device 1-2; the ultraviolet light generator 1-1 includes Controller, ballast, ultraviolet light tube; Described catalytic device 1-2 is an aluminum-based TiO ₂ mesh, surrounded outside the ultraviolet light tube; The lower part of the photocatalytic oxidation zone 1 is provided with an air intake pipe 1- 3 and air distribution pipe 1-4.

The pickling area 2 is provided with an odor pickling assembly, and the odor pickling assembly includes a pickling liquid spraying device 2-1 located at the upper part of the odor pickling assembly, a A pickling liquid storage tank 2-2 and a pickling liquid circulation pump 2-3 for pumping the pickling liquid in the pickling liquid storage tank into the pickling liquid spraying device.

The upper part of the pickling area 2 is provided with a mist eliminator 3. The mist eliminator 3 collects the large liquid droplets in the gas and returns them to reduce the moisture in the gas. Its working principle is that the gas enters the mist eliminator 3. After a series of bends, it is discharged from the top, and the water droplets, due to their mass and kinetic energy, fall straight down when passing through the bends, collide with the surface of the demister, and bounce back under the action of gravity.

The upper part of the demister 3 is provided with an activated carbon adsorption layer 4, and activated carbon is arranged in the described activated carbon adsorption layer 4. The activated carbon is required to have the advantages of well-developed pores, large specific surface area, fast adsorption speed, friction resistance, and washing resistance. After a long period of operation, it is found that the activated carbon becomes sticky, and the activated carbon needs to be replaced in time when the gas velocity decreases.

Specifically, the middle of the sewage treatment plant odor treatment integrated device is cylindrical and the upper end is a conical tank. The tank is provided with an observation port and a maintenance and replacement port. The volume of the tank can be determined according to the gas to be treated. It depends on the amount, and it should be placed vertically.

In order to facilitate the discharge of the treated clean gas, an exhaust fan 5 is installed at the uppermost conical tank of the integrated odor treatment device of the sewage treatment plant.

Further matching with the cylindrical tank container, the cross section of the pickling liquid storage tank 2-2 is circular, and the pickling liquid storage tank 2-2 is provided with a pickling liquid gathering device 2-5 The diameter of the lower end of the pickling solution gathering device 2-5 is smaller than the diameter of the uppermost part of the pickling solution storage tank 2-2, and the pickling solution gathering device 2-5 can make the pickling solution gather and flow back to the pickling solution storage tank Put slot 2-2.

Further, the odor pickling assembly is also equipped with a pickling liquid addition and discharge device 2-4, and the pickling liquid addition and discharge device 2-4 includes a pickling liquid tank and a stirring device, and the pickling liquid The adding and discharging device 2-4 communicates with the pickling liquid circulation pump 2-3 through pipelines and valves.

Further, the pickling solution spraying device 2-1 is a spiral spraying device; the sprayed liquid is in the form of mist, and the water mist intersects and merges without leaving any dead space, which is conducive to expanding the separation between the odor and the solution. Contact area, improve absorption rate and absorption effect.

Preferably, the ultraviolet light tube is a high-intensity, high-ozone ultraviolet light tube.

As a further preferred device, the demister 3 is a baffle plate demister or a swirl plate demister.

As a further preferred device, three legs 6 are provided at the bottom of the entire device.

The wastewater treatment system includes a wastewater regulating tank and a baffled biological aerated filter 7; the wastewater regulating tank and the baffled biological aerated filter 7 are connected in sequence.

The wastewater regulating tank includes a water inlet pipe and a water outlet pipe for regulating the water quality and water quantity of the wastewater.

The middle and upper part of the baffle type biological aerated filter 7 is cylindrical, and the lower part is a conical structure, including a downstream zone 7-1, an upstream zone 7-2 and a sludge zone 7-3; the downstream zone 7- 1 Located in the middle of the cylindrical structure of the baffle type biological aerated filter, it is a cylindrical structure, the upper part of the downstream area is provided with a water inlet pipe 7-4 and a water distribution pipe 7-5, and the middle part of the downstream area is provided with a downstream area filler 7-6, The lower part of the downstream area is provided with an aeration pipe 7-7, and the bottom of the downstream area is provided with a baffle plate 7-8, and the longitudinal section of the baffle plate 7-8 is trumpet-shaped; the upper flow area 7-2 Located on the periphery of the downstream area 7-1 and on the upper part of the baffle, the middle of the upstream area is provided with an upstream area filler 7-9, the lower part is provided with an aeration pipe, and the upper part of the upstream area is provided with an overflow weir 7-10; The sludge area 7-3 is located at the bottom of the baffle type biological aerated filter, the lower part of the downstream area and the upper area, and the bottom of the sludge area is provided with a sludge discharge valve 7-11.

The solid waste treatment system includes a sludge thickening tank, a sludge filter press room, a solid waste mixing tank, and a composting tank; The top is provided with a conical upper cover, and the top of the conical upper cover is equipped with a fan, which is connected to the odor treatment system through the odor collection pipe.

A method for waste treatment using the above-mentioned chicken farm waste treatment device has the following steps:

①Wastewater enters the wastewater regulating tank through the water inlet pipe to adjust the water quality and quantity.

②Wastewater enters the downstream area 7-1 of the baffled biological aerated filter through the water inlet pipe 7-4 and the water distribution pipe 7-5, and the air generated by the aeration pipe 7-7 and the waste water meet in the filler 7-6 to undergo a biochemical reaction At the same time, the filler 7-6 filters the waste water, and the waste water enters the upstream region 7-2 after passing through the baffle plate 7-8, and biochemical reactions occur in the filler 7-9, and the filler 7-9 filters the waste water at the same time, and the downstream region 7 The sludge produced in -1 and upstream zone 7-2 sinks to the sludge zone 7-3, and is discharged through the sludge discharge valve 7-11 at the bottom of the sludge zone, and the water treated by the baffle type biological aerated filter discharge through the overflow weir.

③ The remaining sludge produced by the baffle type biological aerated filter is discharged into the sludge thickening tank.

④The concentrated sludge in the sludge concentration tank is pumped into the sludge filter press room, and the concentrated solution is discharged into the wastewater adjustment tank; the filtered sludge enters the solid waste mixing tank and is mixed with feces, and then enters the composting tank for recycling. Oxygen composting, the composted solids are used as agricultural fertilizers; the press filter liquid is discharged into the wastewater regulating tank.

⑤ The odor generated by the breeding workshop, baffle type aerated biological filter 7, sludge thickening tank, sludge filter press room, solid waste mixing tank, and composting tank is discharged to the odor treatment system by the fan through the odor collection pipe .

⑥Odor gas first enters the photocatalytic oxidation zone of the integrated device for odor treatment, and the high-intensity, high-ozone ultraviolet light tube emits high-energy ultraviolet light beams and ozone to irradiate the odor gas. The gas and gas are decomposed synergistically, and the malodorous pollutants in the odorous gas are decomposed into small molecular substances; the gas continues to rise and contacts with the pickling liquid sprayed by the pickling liquid spraying device 2-1, and the pollutants in the gas and the acid The chemical reaction of the liquid occurs, and the reaction product flows into the lower pickling liquid storage tank 2-2 along with the pickling liquid; the gas then enters the demister 3, where the liquid droplets in the gas are intercepted; then the gas enters the activated carbon adsorption layer 4. The substances and liquid droplets contained in the gas are intercepted and adsorbed here, and the odor is processed into clean gas so as to achieve standard discharge.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (1)

1. a chicken farm waste treatment apparatus, is characterized in that: comprise stench processing system, Waste Water Treatment and solid waste treatment system;

Described stench processing system comprises foul smell collecting pipe, blower fan and Odor control integrated apparatus; Described Odor control integrated apparatus is upwards followed successively by photochemical catalytic oxidation district (1), acid-washing region (2), demister (3), activated carbon adsorption layer (4), exhaust fan (5) from bottom of device;

Described photochemical catalytic oxidation district (1) is positioned at the bottom of whole device; Ultraviolet light generator (1-1), catalytic unit (1-2) is provided with in described photochemical catalytic oxidation district (1); Described ultraviolet light generator (1-1) comprises controller, ballast, ultraviolet tube; Described catalytic unit (1-2) is aluminium base TiO ₂net, is enclosed in outside ultraviolet tube; Odorous air inlet pipe (1-3) and gas distribution pipe (1-4) are established in photochemical catalytic oxidation district (1) bottom;

Described acid-washing region (2) is provided with foul smell pickling assembly, and described foul smell pickling assembly comprises the pickle spray equipment (2-1) being arranged in foul smell pickling assembly top, the pickle being positioned at foul smell pickling assembly bottom stores groove (2-2) and the pickle that pickle stored groove pumps into the pickle circulating pump (2-3) of pickle spray equipment (2-1);

Described acid-washing region (2) top is provided with demister (3), and described demister top is provided with activated carbon adsorption layer (4); Described Odor control integrated apparatus topmost is provided with exhaust fan (5);

Described pickle stores the cross section of groove (2-2) for circular, pickle stores groove (2-2) top and is provided with pickle aggregation apparatus (2-5), and the lower end diameter of described pickle aggregation apparatus (2-5) is less than the diameter that pickle stores groove (2-2) topmost;

Described foul smell pickling assembly is also furnished with pickle adding set and tapping equipment (2-4), described pickle adds and tapping equipment (2-4) comprises pickling flow container and agitating device, and pickle interpolation is communicated with pickle circulating pump (2-3) by pipeline with valve with tapping equipment (2-4); Described pickle spray equipment (2-1) is helical form spray equipment;

Demister (3) is deflection plate demister or overflowing board demister;

For cylindrical, upper end are conical tank body in the middle of described Odor control integrated apparatus, described tank body offers observation port and examine and replace mouth, tank body volume size can according to pending gas flow number and determine, adopt vertical vertical placement;

The bottommost of described Odor control integrated apparatus is provided with three supporting legs (6);

Described Waste Water Treatment comprises wastewater equalization pond, baffling aeration biological filter chamber (7);

Described wastewater equalization pond comprises water inlet pipe and outlet pipe, for regulating water quality and the water yield of waste water;

The middle and upper part of described baffling aeration biological filter chamber (7) is cylindrical, bottom is conical structure, comprises lower current area (7-1), ascending zone (7-2) and mud district (7-3); Described lower current area (7-1) is positioned at the middle part of the cylindrical structural of baffling aeration biological filter chamber, for cylindrical structural, lower current area top is provided with water inlet pipe (7-4) and water distributor (7-5), lower current area filler (7-6) is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube (7-7), the bottom of described lower current area is provided with deflection plate (7-8), and the vertical section of described deflection plate (7-8) is horn-like; Described ascending zone (7-2) is positioned at the periphery of lower current area (7-1), the top of deflection plate, ascending zone filler (7-9) is provided with in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir (7-10); Described mud district (7-3) is positioned at the bottom of the bottom of baffling aeration biological filter chamber, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve (7-11);

Described solid waste treatment system comprises sludge concentration tank, sludge press filtration machine room, solid waste mixing pit, compost pond; The top in described sludge concentration tank, sludge press filtration machine room, solid waste mixing pit and compost pond is provided with conical upper cover, and conical upper cover top settles blower fan, and blower fan is communicated with stench processing system by foul smell collecting pipe.