Environment-friendly fermentation device for converting breeding wastewater into liquid organic fertilizer

Abstract

The environment-friendly fermentation device comprises a fermentation tank body, a highest water level position is arranged on the fermentation tank body, a stirring mechanism is installed on one side of the fermentation tank body at the highest water level position, a cover cap is arranged on the fermentation tank body and comprises a cover film, and a fixing sleeve used for movably penetrating and connecting an elastic rope is arranged along the edge of the top face of the cover film. Rope holes are formed in the two ends of the fixing sleeve respectively, the elastic rope is connected into the fixing sleeve in a penetrating mode, the two ends of the elastic rope penetrate out of the rope holes and then are connected with spring buckles, snap fasteners in buckled connection are arranged on the top face of the fermentation tank body and the bottom face of the cover film respectively, and a clamping ring and a clamping buckle in buckled connection are arranged on the top of the fermentation tank body and the bottom of the cover film respectively. A gas outlet is further formed in one side of the top of the fermentation tank body and connected with a gas guide pipe, and the gas guide pipe is connected with an odor purification system through a first airflow acceleration box. According to the utility model, the manure soaking wastewater is fermented into the liquid organic fertilizer, so that the production cycle is short, the fermentation completion degree is high, the production cost is low, and the resource utilization of manure can be realized. And environmental pollution caused by odor is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of organic fertilizer fermentation devices, and specifically relates to an environmentally friendly fermentation device for converting aquaculture wastewater into liquid organic fertilizer. Background Art

[0002] With the improvement of people's living standards, the demand for pork has increased and the need to accelerate economic development in poor areas has emerged. In recent years, the national policy has tilted towards the "three rural issues" and increased support for the breeding industry. The breeding industry in various parts of Guangxi has been further developed, and the pig farming industry has become one of the pillar industries of rural agriculture. In most rural areas, pig farming is an important source of family income. However, with the increasing scale of breeding, the accompanying problem of pig manure and urine disposal has plagued farmers.

[0003] Generally speaking, a pig produces more urine than feces. A 120-pound pig produces about 7 pounds of urine and 5 pounds of feces per day. A fattening pig (about 250 pounds) produces about 1.5 tons of urine and feces from birth to slaughter.

[0004] At present, large-scale farms use high-efficiency sewage treatment technology such as solid-liquid separator + anaerobic (UASB) + aerobic (SBR) + aquatic plant ponds or solid-liquid separator + hydrolysis (acidification) + two-stage contact oxidation + coagulation process treatment technology for pig manure and urine treatment. These technologies have high operating costs and high fees, which is a heavy burden for individual households and small-scale farms.

[0005] Therefore, rural individual households and small-scale farms basically have no pig manure and urine treatment facilities. Most farmers use solid pig manure for composting, and discharge the mixed manure and urine high-concentration organic wastewater at will. Those with better conditions build several pools for storage. This treatment method, as the storage time increases, emits bursts of odor, polluting the air and environment around the breeding site, attracting flies and other insects to breed, especially in summer, the stench is overwhelming, mosquitoes and flies breed, and it has become an important source of pollution in the rural environment. The pig farming industry has also become the most unpopular industry in the local area. Therefore, in order to solve this problem, it is necessary to design an environmentally friendly pig manure and urine liquid fermentation device that is suitable for rural individual households and small-scale farms with low operating costs and reduced fermentation time.

[0006] The main components of the odor of pig manure and urine are ammonia, hydrogen sulfide, mercaptan, trimethylamine, methyl sulfide, skatole, dimethyl disulfide, dimethyl trisulfide, methyl sulfide and volatile fatty acids (acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, caproic acid, and decanoic acid, etc.).

[0007] Therefore, odor control is also a very important issue in the fermentation process of pig manure and urine. The odor produced by anaerobic fermentation with a long fermentation process is larger and the composition is more complex. Therefore, when designing the liquid fermentation device of pig manure and urine, it is necessary to specially design the odor to prevent secondary pollution. At the same time, it is also necessary to reduce the escape of odor and realize the harmless resource utilization of pig manure and urine. Utility Model Content

[0008] In view of the problems existing in the above-mentioned prior art, the utility model provides an environmentally friendly fermentation device for converting aquaculture wastewater into liquid organic fertilizer. Its purpose is to add microbial agents to the manure wastewater to ferment it into liquid organic fertilizer, which not only accelerates the fermentation process and reduces the generation of odor to realize the resource utilization of manure, but also reduces the odor pollution of the environment, thereby solving the problem in the prior art that the accumulated manure wastewater is applied to the land for fertilization, causing secondary pollution, resulting in a decrease in soil fertility and fertilizer recovery capacity, and also causing damage to plants, causing withering and root rot.

[0009] In order to achieve the above purpose, the specific scheme of the utility model is as follows:

[0010] The invention discloses an environmentally friendly fermentation device for converting aquaculture wastewater into liquid organic fertilizer, comprising a fermentation tank body, a cover, a first airflow acceleration box, a stirring mechanism and an odor purification system. A maximum water level is set on the fermentation tank body, the stirring mechanism is installed on one side of the fermentation tank body at the maximum water level, the cover is arranged on the fermentation tank body, the cover comprises a cover film, an elastic rope and a spring buckle, a fixing sleeve for movably passing and connecting the elastic rope is provided along the edge of the top surface of the cover film, rope holes are respectively provided at both ends of the fixing sleeve, the elastic rope is penetrated and connected in the fixing sleeve, and the two ends of the elastic rope are respectively connected to the spring buckle after passing through the rope holes, the top surface of the fermentation tank body and the bottom surface of the cover film are respectively provided with a snap-fitting sub-and-sub buckle, the top surface of the fermentation tank body and the bottom surface of the cover film are respectively provided with a snap-fitting clamp and a snap buckle, an air outlet is also provided on one side of the top of the fermentation tank body, the air outlet is connected with an air guide pipe, and the air guide pipe is connected to the odor purification system through the first airflow acceleration box.

[0011] Furthermore, the stirring mechanism includes a handle, a rotating shaft and a stirring frame. The rotating shaft is connected to one side of the fermentation tank body at the highest water level through a bearing. One end of the rotating shaft located outside the fermentation tank body is connected to the handle, and one end of the rotating shaft located inside the fermentation tank body is connected to the stirring frame. The stirring frame is a square grid frame, and the stirring frame is made of anti-corrosion material.

[0012] Furthermore, the odor purification system includes a second airflow acceleration box, a first purification box for connecting to normal temperature water, a second purification box for connecting to ethanol and a third purification box for connecting to hot water. The first purification box, the second purification box and the third purification box are respectively provided with a water inlet pipe and a drain pipe with a cover at the bottom, and an air inlet and an air outlet are respectively provided at the top, and are connected through the pipe body from left to right in sequence. The air guide pipe is connected to the air inlet of the first purification box through the first airflow acceleration box, and the second airflow acceleration box is respectively installed on the pipe body between the first purification box, the second purification box and the third purification box, and a purified gas exhaust pipe is provided on the top of the third purification box.

[0013] Furthermore, the first airflow acceleration box and the second airflow acceleration box are respectively composed of a box body and an air guide fan, the air guide fan is installed in the box body, and an air inlet is provided on the top of the box body and an air outlet is provided on the bottom.

[0014] Furthermore, the fermentation tank body is barrel-shaped and inclined at 30°, and a water outlet with a switch is arranged at the bottom of one side of the inclined fermentation tank body, at least three pairs of snap fasteners are arranged, and a lock buckle is arranged at the inlet end of the air duct.

[0015] Furthermore, the cover also includes an elastic band, which is provided with a plurality of elastic bands, and the plurality of elastic bands are cross-connected to the top surface of the cover film, the cover film is round or umbrella-shaped and made of transparent material, and the inner wall of the fermentation tank is made of antiseptic material.

[0016] Advantages of the utility model

[0017] The utility model discloses an environmentally friendly fermentation device for converting aquaculture wastewater into liquid organic fertilizer, which can prevent rain, flies and reduce the amount of sewage. Through the setting of a stirring mechanism, the growth and reproduction of microorganisms in the fermentation tank and the fermentation and maturation are promoted. The stirring is labor-saving, convenient and work-saving. The retractable cover is suitable for fermentation tanks of different models, which is convenient to use and store, and can also reduce the discharge of odor. Through the setting of a cover made of a light-transmitting material and an odor purification system, it is not only conducive to the growth and reproduction of photoautotrophic bacteria, but also provides a nutrient matrix for other microorganisms in the fermentation tank, promotes the fermentation and maturation of materials, and can also concentrate the odor generated in the fermentation process, and discharge it after purification through the odor purification system. Compared with an open liquid fermentation tank, the utility model has a small footprint, is clean and tidy, can shorten the fermentation time and improve the fermentation efficiency. The odor purification system can effectively reduce the odor discharge and improve the air quality of the environment. At the same time, due to the simple equipment, short production cycle, small footprint, high fermentation completion and low production cost, the utility model is suitable for promotion in mountainous rural areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the environmentally friendly fermentation device for aquaculture wastewater of the present utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the top surface structure of the middle cover.

[0020] Figure 3 for Figure 1 Schematic diagram of the bottom structure of the middle cover.

[0021] In the figure:

[0022] 1. Fermentation tank body; 101. Female buckle; 102. Clamp; 103. Water outlet with switch; 104. Air outlet; 2. Cover; 201. Cover film; 202. Fixed sleeve; 203. Rope hole; 204. Elastic rope; 205. Sub-buckle; 206. Spring buckle; 207. Buckle; 208. Elastic belt; 3. Stirring mechanism; 301. Handle; 302. Rotating shaft; 303. Stirring frame; 4. Air guide tube; 401. Lock; 5. First airflow acceleration box; 6. Second airflow acceleration box; 7. First purification box; 8. Second purification box; 9. Third purification box; 10. Drain pipe with cover; 11. Purified gas discharge pipe. DETAILED DESCRIPTION

[0023] The present invention is further explained below in conjunction with the accompanying drawings and the specification. It should be noted that this specific embodiment is not intended to limit the scope of rights of the present invention.

[0024] like Figures 1 to 3 As shown, this specific embodiment provides an environmentally friendly fermentation device for converting aquaculture wastewater into liquid organic fertilizer, including a fermentation tank body 1, a cover 2, a first airflow acceleration box 5, a stirring mechanism 3 and an odor purification system.

[0025] The fermentation tank body 1 is barrel-shaped, and the inner wall of the fermentation tank body 1 is made of anti-corrosion material. The fermentation tank body 1 is inclined at 30°, and a water outlet 103 with a switch is set at the bottom of the inclined side of the fermentation tank body 1 to facilitate the removal of sediment and the discharge of fermentation liquid.

[0026] The highest water level is set on the fermentation tank body 1 to prevent liquid leakage and reduce the cost of equipment for leakage prevention. The stirring mechanism 3 includes a handle 301, a rotating shaft 302 and a stirring rack 303. The fermentation tank body 1 is provided with the highest water level. The rotating shaft 302 is connected to one side of the fermentation tank body 1 at the highest water level through a bearing. One end of the rotating shaft 302 located outside the fermentation tank body 1 is connected to the handle 301, and one end of the rotating shaft 302 located inside the fermentation tank body 1 is connected to the stirring rack 303. The stirring rack 303 is a square grid rack, and the stirring rack 303 is made of anti-corrosion material. When the handle 301 is rotated, the stirring rack 303 rotates 360° longitudinally along the rotating shaft 302 to stir and mix the water bubble feces liquid. The size of the stirring rack 302 is adapted to the fermentation tank body 1, and when the stirring rack 303 rotates 360° with the rotating shaft as the axis, it does not touch the inner wall of the fermentation tank body 1.

[0027] The functions of the stirring mechanism 3 are: first, it can increase the oxygen content in the fermentation liquid through stirring, which is beneficial to the respiration and metabolism of aerobic bacteria such as Pseudomonas maltophilia and Pseudomonas acidovorans; second, it can make the nutrients and metabolites in the fermentation liquid better transferred and exchanged, which is beneficial to the growth of bacteria and product synthesis; third, it can prevent the bacteria from precipitating in the fermentation liquid, so that the bacteria are always in a suspended state, which is beneficial to the smooth progress of the fermentation process; fourth, it can make the heat in the fermentation liquid better dissipate, preventing the inhibition of bacterial growth and product metabolism due to excessive temperature.

[0028] The cover 2 is arranged on the fermentation tank body 1, and the cover 2 is light-transmissive, and can meet the light requirements of the growth of light-energy heterotrophic bacteria and autotrophic bacteria. Specifically, the cover 2 includes a cover film 201, an elastic rope 204, a spring buckle 206 and an elastic band 208, and the cover film 201 is round or umbrella-shaped. Preferably, the cover film 201 is made of ethylene-tetrafluoroethylene copolymer (ETFE), which is a transparent material that is light-transmissive, rainproof, heat-resistant, UV-resistant, easy to fold and soft. To provide a suitable growth environment for photosynthetic bacteria in the fermentation tank body 1, a fixed sleeve 202 for movably inserting and connecting an elastic rope 204 is provided along the edge of the top surface of the cover film 201. Rope holes 203 are provided at both ends of the fixed sleeve 202. The elastic rope 204 is connected through the fixed sleeve 202, and the two ends of the elastic rope 204 are connected to spring buckles 206 after passing through the rope holes 203. The role of the spring buckle 206 and the elastic rope 204 is to facilitate loosening or tightening, and the cover film 201 automatically opens or contracts, which is convenient for storage and use. The top surface of the fermentation tank body 1 and the bottom surface of the cover film 201 are respectively provided with a female buckle 101 and a sub-buckle 205 connected in a buckle connection, so that the fermentation tank body 1 can achieve the effect of sealing and gathering the odor in the tank body. There are at least three sub-buckles 205 and the female buckle 101, respectively, and four are provided in this embodiment. A snap ring 102 is provided at the top of the fermentation tank body 1, and snap rings 207 that are snap-connected to the snap ring 102 are provided at the bottom of the cover film 201, respectively, so as to facilitate the cover to be fixed on and removed from the fermentation tank body 1. A plurality of elastic bands 208 are provided, and the plurality of elastic bands 208 are cross-connected to the top surface of the cover film 201. Two elastic bands 208 of this embodiment are provided, and the two elastic bands 208 are cross-shaped and fixedly connected to the top surface of the cover film 201. The provision of the elastic bands 208 enables the cover 2 to be adjusted according to the size of the fermentation tank body 1, and is also convenient for storage.

[0029] An air outlet 104 is also provided on one side of the top of the fermentation tank body 1, and the air outlet 104 is connected to an air duct 4. A lock 401 is provided at the inlet end of the air duct 4 to fix and seal the air duct. The air duct 4 is connected to the odor purification system through the first airflow acceleration box 5. The odor purification system includes a second airflow acceleration box 6, a first purification box 7 for connecting normal temperature water, a second purification box 8 for connecting ethanol, and a third purification box 9 for connecting the hot water outlet of the water heater. The first purification box 7, the second purification box 8, and the third purification box 9 are respectively provided with a covered drain pipe 10 and a water inlet pipe (not shown) at the bottom, and an air inlet and an air outlet are respectively provided at the top, and are connected from left to right through the pipe body in sequence. The air duct 4 is connected to the air inlet of the first purification box 7 through the first airflow acceleration box 5, and the second airflow acceleration box 6 is respectively installed on the pipe body between the first purification box 7, the second purification box 8, and the third purification box 9, and the top of the third purification box 9 is provided with a purified gas discharge pipe 11. The first airflow acceleration box 5 and the second airflow acceleration box 6 are respectively composed of a box body and an air guide fan, the air guide fan (not shown) is installed in the box body, the top of the box body is provided with an air inlet, and the bottom is provided with an air outlet. The air guide fan is a rechargeable, axial flow fan, which is convenient to use anytime and anywhere, and is suitable for mountainous rural areas where there are no roads passing through.

[0030] Working principle:

[0031] When in use, add the feces liquid, fermentation bacteria, wheat bran, brown sugar and yeast extract powder into the fermentation tank body 1 in a certain proportion, start the stirring mechanism 3 to stir the materials; then, add normal temperature water, ethanol and hot water into the first purification box 7, the second purification box 8 and the third purification box 9 respectively, connect the air guide tube 4 to the air outlet 104 of the fermentation tank body 1, cover the cover 2, connect the buckle 207 of the cover 2 with the buckle 102 on the top surface of the fermentation tank body 1, open the spring buckle 206 of the fixing sleeve 202, and tighten the elastic rope 20 4. Relax, and buckle the sub-button 205 on the cover film 201 with the female button 101 on the top surface of the fermentation tank body 1, so that the cover 2 can seal the fermentation tank body 1; turn on the power of the air guide fan in the first and second airflow acceleration boxes 5 and 6, and ferment the water-soaked feces liquid at room temperature for 15 days. For the first 10 days of fermentation, stir once in the morning and afternoon every day for 3-5 minutes each time. On the 5th day, replace the corresponding liquid in the three purification boxes, and continue fermenting until the fermentation is completed. Turn off the power and take out the fermented liquid organic fertilizer from the water outlet of the fermentation tank body 1.

Claims

1. An environmentally friendly fermentation device for converting aquaculture wastewater into liquid organic fertilizer, characterized in that: The invention comprises a fermentation tank body, a cover, a first airflow acceleration box, a stirring mechanism and an odor purification system. A maximum water level is arranged on the fermentation tank body, the stirring mechanism is installed on one side of the fermentation tank body at the maximum water level, the cover is arranged on the fermentation tank body, the cover comprises a cover film, an elastic rope and a spring buckle, a fixing sleeve for movably passing and connecting the elastic rope is arranged along the edge of the top surface of the cover film, rope holes are respectively arranged at both ends of the fixing sleeve, the elastic rope is penetrated and connected in the fixing sleeve, and the two ends of the elastic rope are respectively connected to the spring buckle after passing through the rope holes, the top surface of the fermentation tank body and the bottom surface of the cover film are respectively provided with a sub-and-sub-buckle connected by buckling, the top of the fermentation tank body and the bottom of the cover film are respectively provided with a snap ring and a snap buckle connected by a snap buckle, an air outlet is also arranged on one side of the top of the fermentation tank body, the air outlet is connected with an air guide pipe, and the air guide pipe is connected to the odor purification system through the first airflow acceleration box.

2. The fermentation device according to claim 1, characterized in that: The stirring mechanism includes a handle, a rotating shaft and a stirring frame. The rotating shaft is connected to one side of the fermentation tank body at the highest water level through a bearing. One end of the rotating shaft located outside the fermentation tank body is connected to the handle, and one end of the rotating shaft located inside the fermentation tank body is connected to the stirring frame. The stirring frame is a square grid frame, and the stirring frame is made of anti-corrosion material.

3. The fermentation device according to claim 2, characterized in that: The odor purification system includes a second airflow acceleration box, a first purification box for connecting to normal temperature water, a second purification box for connecting to ethanol, and a third purification box for connecting to hot water. The first purification box, the second purification box, and the third purification box are respectively provided with a water inlet pipe and a drain pipe with a cover at the bottom, and an air inlet and an air outlet are respectively provided at the top, and are connected through the pipe body from left to right in sequence. The air guide pipe is connected to the air inlet of the first purification box through the first airflow acceleration box, and the second airflow acceleration box is respectively installed on the pipe body between the first purification box, the second purification box, and the third purification box, and a purified gas exhaust pipe is provided on the top of the third purification box.

4. The fermentation device according to claim 3, characterized in that: The first airflow acceleration box and the second airflow acceleration box are respectively composed of a box body and an air guide fan, the air guide fan is installed in the box body, the top of the box body is provided with an air inlet, and the bottom is provided with an air outlet.

5. The fermentation device according to claim 1, characterized in that: The fermentation tank body is in the shape of a cylinder and is inclined at 30 degrees. A water outlet with a switch is arranged at the bottom of one inclined side of the fermentation tank body. At least three pairs of snap fasteners are arranged, and a lock buckle is arranged at the inlet end of the air guide pipe.

6. The fermentation device according to claim 1, characterized in that: The cover also includes an elastic band, which is provided with a plurality of elastic bands, and the plurality of elastic bands are cross-connected to the top surface of the cover film, the cover film is round or umbrella-shaped and made of transparent material, and the inner wall of the fermentation tank is made of antiseptic material.

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