CN117466673A - Natural purification treatment system and treatment method for organic waste - Google Patents
Natural purification treatment system and treatment method for organic waste Download PDFInfo
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- CN117466673A CN117466673A CN202311435143.0A CN202311435143A CN117466673A CN 117466673 A CN117466673 A CN 117466673A CN 202311435143 A CN202311435143 A CN 202311435143A CN 117466673 A CN117466673 A CN 117466673A
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- 238000011282 treatment Methods 0.000 title claims abstract description 124
- 239000010815 organic waste Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000000746 purification Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 187
- 238000005273 aeration Methods 0.000 claims abstract description 144
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000003337 fertilizer Substances 0.000 claims abstract description 88
- 238000003756 stirring Methods 0.000 claims abstract description 87
- 239000000463 material Substances 0.000 claims abstract description 74
- 239000002361 compost Substances 0.000 claims abstract description 67
- 238000000926 separation method Methods 0.000 claims abstract description 61
- 238000003860 storage Methods 0.000 claims abstract description 47
- 238000000855 fermentation Methods 0.000 claims abstract description 28
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 230000004151 fermentation Effects 0.000 claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 27
- 238000009264 composting Methods 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000001556 precipitation Methods 0.000 claims description 14
- 238000000265 homogenisation Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/957—Apparatus therefor using two or more serially arranged devices
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
- C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
- C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/964—Constructional parts, e.g. floors, covers or doors
- C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
- C05F17/986—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being liquid
Abstract
The invention discloses a natural purification treatment system and a treatment method for organic wastes, wherein the natural purification treatment system comprises a raw water treatment device, a solid-liquid separation device, a composting production line and a liquid fertilizer production line, the composting production line comprises a stirring fermentation device and a post-maturation device, the liquid fertilizer production line comprises an aeration treatment device, a sedimentation device, a sludge returning device and a liquid fertilizer storage device, the organic wastes can be subjected to solid-liquid separation, the separated composting materials are subjected to stirring, fermentation, post-maturation and the like and then are converted into decomposed compost, and the separated liquid fertilizer is subjected to aerobic aeration treatment, sedimentation and the like and then is converted into liquid fertilizer.
Description
Technical Field
The invention relates to the technical field of organic waste treatment, in particular to a natural purification treatment system and a natural purification treatment method for organic waste.
Background
The treatment and recycling of the livestock and poultry manure are important points and difficulties of rural ecological environment protection work, and the ecological civilization construction bureau of the Shiguan has important practical significance for pollution control and long-term ecological safety strategic significance for improving the quality of rural ecological environment, improving the green development level of agriculture and promoting the yield and quality improvement of agricultural products.
The current breeding industry gradually develops to large-scale breeding, the breeding cost is reduced and the breeding efficiency is improved by large-scale breeding of livestock, but the livestock has a large amount of excrement and urine and a long treatment period. In the traditional technology, most of the culture wastes in the domestic culture industry are directly discharged or piled up for use in farmlands only through anaerobic fermentation treatment or solid-liquid separation. However, the technology still has the problems of bad smell generation, secondary pollution of soil (such as agricultural land, forest land), groundwater and air, low treatment efficiency, substandard quality of treated liquid or solid fertilizer, low recycling utilization rate and the like in the treatment process, and can not solve the problem of bad smell and pollution generation and effective recycling utilization of excrement.
Disclosure of Invention
In view of the above-mentioned drawbacks of the related art, an object of the present invention is to disclose a natural purification treatment system and treatment method for organic waste, which solve the problems of the pollution treatment quality of the organic waste not reaching the standard, low recycling utilization rate, and the like.
To achieve the above and other related objects, the present invention discloses a natural purifying treatment system for organic waste, comprising:
raw water treatment device, which is used to process the organic waste raw water;
the solid-liquid separation device is in fluid communication with the raw water treatment device and is used for carrying out solid-liquid separation treatment on the organic waste raw water subjected to homogenization treatment to separate a compost material and liquid fertilizer fluid; wherein the water content of the separated compost material is 60-90 wt%;
a composting line comprising: the stirring and fermenting device is communicated with the solid-liquid separation device and is used for stirring and fermenting the separated compost materials so as to ripen the compost materials; the after-ripening device is communicated with the stirring fermentation device and is used for composting and drying the compost material, so that organic substances which are not completely decomposed are decomposed continuously and converted into decomposed compost; and
liquid fertilizer production line includes: the aeration treatment device is communicated with the solid-liquid separation device and is used for carrying out aerobic aeration treatment on the separated liquid fertilizer flowing liquid; the sedimentation device is communicated with the aeration treatment device, and utilizes sedimentation to separate liquid fertilizer flow and sludge subjected to aerobic aeration treatment; the sludge returning device is communicated with the sedimentation device and is used for returning the sludge separated by sedimentation to the aeration treatment device or the stirring fermentation device; and the liquid fertilizer storage device is communicated with the precipitation device and is used for storing the liquid fertilizer separated through precipitation.
Optionally, the raw water treatment apparatus includes: the raw water storage pool group is provided with a plurality of raw water storage pools which are sequentially arranged and communicated; and the stirring equipment is arranged in each raw water storage pool and is used for stirring the raw water of the organic waste in the raw water storage pool and enabling the raw water of the organic waste to circularly flow in a counter-clockwise mode or a clockwise mode in a plurality of raw water storage pools of the raw water storage pool group.
Optionally, an aeration device is arranged in the raw water treatment tank.
Optionally, the solid-liquid separation device includes a solid-liquid separation chamber, and the solid-liquid separation chamber includes: the primary separation tank and the secondary separation tank are communicated with the primary separation tank, and compost materials are output from the secondary separation tank; the liquid fertilizer flowing liquid is output from the secondary adjusting tank.
Optionally, the stirring fermentation device comprises: the stirring fermentation tank is used for storing compost materials; the feeding equipment is used for feeding stirring materials into the stirring fermentation tank; the stirring equipment is used for stirring and mixing the input stirring material and the composting material so as to ferment the stirring material and the composting material; and the air supply device is used for supplying air.
Optionally, the post-ripening device comprises: a post-maturation tank and an air supply device.
Optionally, the composting line further comprises packaging equipment for packaging the produced compost.
Optionally, the aeration treatment device includes: the aeration tank group is provided with a plurality of aeration tanks which are sequentially communicated, and the first aeration tank is communicated with the solid-liquid separation device; the stirring equipment is arranged in each aeration pool and is used for stirring the liquid fertilizer flowing liquid in the aeration pool and enabling the liquid fertilizer flowing liquid to flow in a plurality of aeration pools of the aeration pool group in a serpentine flow path; the aeration equipment comprises an air pump and an aeration pipeline, wherein the aeration pipeline is connected with the air pump and is arranged at an air inlet of the aeration tank; the water injection device comprises a water pump and a water injection pipeline, wherein the water injection pipeline is connected with the water pump and is arranged at a water injection port of the aeration tank.
Optionally, the aeration intensity in a part of the aeration tanks adjacent to the solid-liquid separation device in the aeration tank group is larger than that in other aeration tanks.
Optionally, a fluid stabilizing device is provided in the sedimentation device.
Optionally, an aggregation device is arranged in the precipitation device.
Optionally, the liquid fertilizer storage device comprises a liquid fertilizer storage pool and an aeration device.
The invention also discloses a natural purification treatment method of the organic waste, which comprises the following steps:
homogenizing the raw water of the organic waste;
carrying out solid-liquid separation treatment on the organic waste raw water subjected to homogenization treatment, and separating to form a compost material and liquid fertilizer flowing liquid; wherein the water content of the separated compost material is 60-90 wt%;
stirring and fermenting the separated compost materials to enable the compost materials to be ripe; composting and drying the compost material to enable organic substances which are not completely decomposed to be decomposed continuously and to be converted into decomposed compost; and
carrying out aerobic aeration treatment on the separated liquid fertilizer flow liquid; separating the liquid fertilizer flow liquid treated by aerobic aeration from the sludge by utilizing precipitation; returning the sludge separated by precipitation to continue aerobic aeration treatment, and storing the liquid fertilizer separated by precipitation.
Optionally, the method further comprises the step of, before the organic waste raw water is subjected to the homogenization treatment: and screening the raw water of the organic waste to remove impurities in the raw water of the organic waste.
Alternatively, in the process of homogenizing the organic waste raw water, the organic waste raw water is stirred and circulated in a counterclockwise manner or a clockwise manner.
Optionally, the step of subjecting the raw water of organic waste subjected to the homogenization treatment to the solid-liquid separation treatment includes: the organic waste raw water is firstly separated for the first time and separated for the second time, then the compost material is output, and the rest part is subjected to the first adjustment and the second adjustment, and then liquid fertilizer flowing liquid is output.
Optionally, the step of stirring and fermenting the separated compost material comprises: adding stirring materials into the stored compost materials, stirring and mixing the added stirring materials with the compost materials, and fermenting; during the fermentation process, air supply is performed.
Optionally, the natural purification treatment method of the organic waste further comprises the steps of: packaging the produced compost.
Optionally, the step of performing aerobic aeration treatment on the separated liquid fertilizer flow liquid comprises the following steps: stirring the liquid fertilizer flowing liquid, enabling the liquid fertilizer flowing liquid to flow in a serpentine flow path, and simultaneously aerating and injecting water to the liquid fertilizer flowing liquid.
In summary, the natural purification treatment system and the treatment method for the organic waste disclosed by the invention can be used for carrying out solid-liquid separation on the organic waste, carrying out stirring, fermentation, post-maturation and other treatments on the separated compost materials, then converting the separated compost materials into decomposed compost, carrying out aerobic aeration treatment, sedimentation and other treatments on the separated liquid fertilizer flowing liquid, and then converting the separated liquid fertilizer flowing liquid into liquid fertilizer.
Drawings
FIG. 1 is a schematic diagram of a natural purifying system for organic waste according to the present invention.
Fig. 2 is a site layout view of the raw water treatment apparatus.
Fig. 3 is a field layout of the liquid fertilizer production line.
Fig. 4 is a flow chart of the natural purifying treatment method of the organic waste.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the specific embodiments of the present invention are within the scope of the present invention.
In the following description, reference is made to the accompanying drawings which describe several embodiments of the invention. It is to be understood that other embodiments may be utilized and that structural, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present invention is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In view of the pollution problems existing in the current large-scale cultivation and the current situations that the cost is too high, the efficiency is low or the effective treatment of the feces (the malodor, the secondary pollution of soil, underground water and air and the like cannot be eliminated) cannot be realized in the existing feces treatment mode aiming at livestock, the invention discloses a natural purification treatment system and a natural purification treatment method of organic wastes, which aim to solve various practical problems existing in the existing feces treatment of farms.
Referring to fig. 1, a schematic structure diagram of a natural purifying system for organic waste according to the present invention is shown. As shown in fig. 1, the natural purification treatment system of organic waste may include: raw water treatment device 11, solid-liquid separation device 13, composting line 15, and liquid-fertilizer line 17, wherein composting line 15 may further include: the stirring fermentation device 151 and the post-maturation device 153, the liquid fertilizer production line 17 may further include: aeration treatment device 171, sedimentation device 173, sludge returning device 175, and liquid fertilizer storage device 177.
The raw water treatment device 11 is used for homogenizing raw water of organic waste.
The homogenization treatment generally refers to a treatment method of thoroughly mixing the components of the organic waste, and may be, for example, stirring, aeration, or the like, so that the organic waste can be thoroughly homogenized. The raw water may be livestock raising waste, which may include feces and/or urine of livestock, and the component content of the livestock raising waste may have a certain difference in component content depending on factors such as feeding mode, use amount of washing water, season, and collection mode of feces and urine, for example, TN (total nitrogen content) may be 4000 to 6000mgl/L, 4000 to 4500mgl/L, 4500 to 5000mgl/L, 5000 to 5500mgl/L, or 5500 to 6000mgl/L, and further for example, T-P (total phosphorus content) may be 1500mgl/L or less, 600 to 800mgl/L, 800 to 1000mgl/L, 1000 to 1200mgl/L, or 1200 to 1500mgl/L, for another example, COD (chemical oxygen demand) may be 40000 to 60000mgl/L, 40000 to 45000mgl/L, 45000 to 50000mgl/L, 50000 to 55000mgl/L, or 55000 to 60000mgl/L, BOD (biological oxygen demand) may be 40000 to 60000mgl/L, 40000 to 45000mgl, 45000 to 50000mgl/L, 50000 to 55000mgl/L, or 55000 to 60000mgl/L, and SS (solid suspension concentration) may be 35000mgl/L, 20000 to 25000mgl, 25000 to 30000mgl/L, or 30000 to 35000mgl/L, and further for example, pH may be alkaline, more specifically 7.5 to 10, 7.5 to 8, 8 to 8.5, 8.5 to 9, 9 to 9.5, or 9.5 to 10.
Referring to fig. 2, a site layout diagram of a raw water treatment apparatus is shown. As shown in fig. 2, the raw water treatment apparatus 11 may include: the raw water storage pool group comprises a plurality of raw water storage pools 111, wherein a stirring device 112 can be arranged in each raw water storage pool 111, and the raw water storage pools 111 are sequentially arranged and sequentially communicated. For example, there are eight raw water storage pools 111 in the raw water storage pool group, and the eight raw water storage pools 111 are sequentially arranged and sequentially communicated, that is, the first raw water storage pool is communicated with the second raw water storage pool, the second raw water storage pool is communicated with the third raw water storage pool, … …, the seventh raw water storage pool is communicated with the eighth raw water storage pool, and the eighth raw water storage pool is communicated with the first raw water storage pool. And stirring equipment is arranged in each raw water storage pool, the stirring equipment is used for stirring the organic waste raw water in the raw water storage pool, and the organic waste raw water can circularly flow in a counter-clockwise manner or a clockwise manner in a plurality of raw water storage pools of the raw water storage pool group, for example, the organic waste raw water circularly flows in a manner of sequentially flowing from the first raw water storage pool to the eighth raw water storage pool. In practical application, the stirring equipment at least comprises a stirring motor and a stirring screw controlled by the stirring motor. In addition, aeration equipment 113 can be arranged in the raw water storage pool, so as to ensure that the raw water storage pool is maintained in an aerobic environment, and a person skilled in the art can select a proper method to maintain the oxygen content in the reaction system. In practical application, the aeration equipment comprises an air pump and an aeration pipeline, wherein the aeration pipeline is connected with the air pump and is arranged at an air inlet of the aeration tank.
In fact, in the present invention, the natural purification treatment system for organic waste according to the present invention further comprises a screening device provided before the raw water treatment device, for screening raw water for organic waste to remove impurities in the raw water for organic waste.
The solid-liquid separation device 13 is in fluid communication with the raw water treatment device 11 and is used for carrying out solid-liquid separation treatment on the organic waste raw water subjected to the homogenization treatment, and separating to form compost materials and liquid fertilizer fluid. In the present invention, the solid-liquid separation apparatus includes a solid-liquid separation chamber and a separation device provided in the solid-liquid separation chamber, the solid-liquid separation chamber including: the device comprises a primary separation tank, a secondary separation tank, a primary adjustment tank and a secondary adjustment tank, wherein the primary separation tank is communicated with a raw water storage tank, the secondary separation tank is communicated with the primary separation tank, the primary adjustment tank is communicated with the secondary separation tank, the secondary adjustment tank is communicated with the first adjustment tank, composting materials are output from the secondary separation tank, the water content of the separated composting materials is 60-90 wt%, and liquid fertilizer flow liquid is output from the secondary adjustment tank. In practice, the skilled artisan may select suitable separation equipment, which may be, for example, a centrifuge, a uniflow screen, a trommel, a vibrating screen, etc., and the separation equipment may be disposed in one or more of a primary separation tank, a secondary separation tank, a primary conditioning tank, and a secondary conditioning tank.
The composting line is used for processing the separated composting material to produce compost. As shown in fig. 1, the composting line 15 may further include: a stirring fermentation device 151 and a post-maturation device 153.
The stirring and fermenting device 151 is communicated with the solid-liquid separation device 13 and is used for stirring and fermenting the separated compost materials so as to ripen the compost materials.
In practical applications, the stirring fermentation device 51 may further include: stirring fermentation vat, batch charging equipment, agitated vessel, and air supply equipment. Wherein, the stirring fermentation vat is used for storing compost material. The feeding device is used for feeding stirring materials into the stirring fermentation tank, and a person skilled in the art can select suitable stirring materials, for example, sawdust, chaff, bean pulp, flue-cured tobacco straw, mushroom residue, or any combination thereof. The stirring equipment is used for stirring and mixing the input stirring material and the composting material so as to ferment the composting material. The air supply device is used for supplying air. Of course, the stirring fermentation device 51 may further comprise a water supply device for injecting water into the stirring fermentation tank, if necessary.
The after-ripening device 153 is communicated with the stirring fermentation device 151 and is used for composting and drying the compost material, so that organic matters which are not completely decomposed are decomposed and decomposed continuously and are converted into decomposed compost. In practical application, the post-ripening device 153 is a post-ripening tank and an air supply device. The decomposed compost may be further dried.
The composting production line also comprises packaging equipment for packaging the produced compost. In practical application, the after-matured compost can be crushed and screened before packaging to obtain powdery compost. In addition, the method can also comprise the step of supplementing nitrogen, phosphorus, potassium and other elements into the powdery compost to prepare the granular fertilizer. These processes may be carried out in the after-ripening device or in other devices between the latter device and the packaging apparatus.
The liquid fertilizer production line is used for treating the separated liquid fertilizer flowing liquid to produce liquid fertilizer. As shown in fig. 1, the liquid fertilizer production line 17 may further include: aeration treatment device 171, sedimentation device 173, sludge returning device 175, and liquid fertilizer storage device 177.
Referring to fig. 3, a field layout diagram of the liquid fertilizer production line is shown.
The aeration treatment device 171 is communicated with the solid-liquid separation device 13 and is used for carrying out aerobic aeration treatment on the separated liquid fertilizer flow liquid. As shown in fig. 3, the aeration treatment device 171 may further include: aeration tank group, agitated vessel, aeration equipment, water injection equipment.
The aeration tank group has a plurality of aeration tanks 1711 which are sequentially communicated, and the plurality of aeration tanks 1711 are sequentially arranged and are sequentially communicated. For example, there are eight aeration tanks in the aeration tank group, and these eight aeration tanks 1711 are sequentially arranged and sequentially communicated, that is, a first aeration tank is communicated with the solid-liquid separation device 13 for receiving the separated liquid fertilizer flow, a second aeration tank is communicated with the first aeration tank, a third aeration tank is communicated with the second aeration tank, … …, a seventh aeration tank is communicated with a sixth aeration tank, and an eighth aeration tank is communicated with the seventh aeration tank.
And stirring equipment is arranged in each aeration tank, the liquid fertilizer flowing liquid in the aeration tank is stirred by the stirring equipment, and the liquid fertilizer flowing liquid can flow in a plurality of aeration tanks of the aeration tank group in a serpentine flow path. To realize that liquid fertilizer flows in a plurality of aeration tanks of the aeration tank group in a serpentine flow path, in practical application, liquid inlets and liquid outlets of all the aeration tanks need to be reasonably arranged, for example, the liquid inlet of a first aeration tank is positioned at a high position of a tank top or a tank top, the liquid outlet of the first aeration tank is positioned at a low position of a tank bottom or a tank bottom, the liquid inlet of a second aeration tank is positioned at a low position of a tank bottom or a tank bottom, the liquid outlet of the second aeration tank is positioned at a high position of a tank top or a tank top, the liquid inlet of a third aeration tank is positioned at a high position of a tank top or a tank top, the liquid outlet of a third aeration tank is positioned at a low position of a tank bottom or a tank bottom, the liquid outlet of a fourth aeration tank is positioned at a high position of a tank top or a tank top, the liquid inlet of a fifth aeration tank is positioned at a high position of a tank top or a tank top, the liquid outlet of the fifth aeration tank is positioned at the bottom of the tank or is close to the bottom of the tank, the liquid inlet of the sixth aeration tank is positioned at the bottom of the tank or is close to the bottom of the tank, the liquid outlet of the sixth aeration tank is positioned at the top of the tank or is close to the top of the tank, the liquid inlet of the seventh aeration tank is positioned at the bottom of the tank or is close to the bottom of the tank, the liquid inlet of the eighth aeration tank is positioned at the bottom of the tank or is close to the bottom of the tank, the liquid outlet of the eighth aeration tank is positioned at the top of the tank or is close to the top of the tank, i.e. for the odd number of aeration tanks, the liquid inlet is positioned at the top of the tank or is close to the bottom of the tank and for the even number of aeration tanks, the liquid inlet is positioned at the bottom of the tank or is close to the bottom of the tank or is positioned at the top of the tank or is close to the top of the tank. However, the aeration tanks are not limited thereto, and for example, the liquid inlet is located at the top of the tank or near the top of the tank and the liquid outlet is located at the bottom of the tank or near the bottom of the tank, while the liquid inlet is located at the bottom of the tank or near the bottom of the tank and the liquid outlet is located at the top of the tank or near the top of the tank for the second, third, sixth and seventh aeration tanks. Or other settings, etc. In practical application, the stirring equipment at least comprises a stirring motor and a stirring screw controlled by the stirring motor.
And each aeration tank can be internally provided with aeration equipment, the aeration equipment comprises an air pump and an aeration pipeline, and the aeration pipeline is connected with the air pump and is arranged at an air inlet of the aeration tank. The aeration process is a process of oxidizing and decomposing organic matters by using microorganisms. The aeration equipment can be a fine bubble air dispersing device (in-water aeration device) with small damage to sludge, high oxygen transmission rate and good stirring function.
Water injection equipment can be further arranged in each aeration tank, the water injection equipment comprises a water pump and a water injection pipeline, and the water injection pipeline is connected with the water pump and is arranged at a water injection port of the aeration tank.
It should be noted that, for the plurality of aeration tanks in the aeration tank group, different settings may be made according to actual needs, for example, the aeration intensity in the part of the plurality of aeration tanks adjacent to the solid-liquid separation device in the aeration tank group is greater than the aeration intensity in the other aeration tanks. For example, for eight aeration tanks, the first four aeration tanks adopt high-intensity aeration, the aeration amount is large, the oxygen supply amount is large, the microorganism activity is induced, and the last four aeration tanks adopt weak-intensity aeration, the aeration amount is small, and the oxygen supply amount is small. However, the present invention is not limited thereto, and for example, the first three are strong aeration treatments and the second five are some aeration treatments, or the like.
The sedimentation device 173 is communicated with the aeration treatment device 171, and separates the liquid fertilizer flow and the sludge which are subjected to the aerobic aeration treatment by utilizing the sedimentation effect. The sedimentation device 173 comprises a sedimentation tank, and the liquid fertilizer flow liquid output by the aeration tank 1711 in the aeration treatment device 171 is stored in the sedimentation tank for sedimentation. Generally, the liquid fertilizer flowing liquid can be stored in a sedimentation tank to be settled and retained for more than 12 hours, so that the liquid fertilizer flowing liquid is subjected to sedimentation and layering to form precipitated solid sludge and purified liquid fertilizer positioned above the solid sludge, wherein the precipitated solid sludge contains microorganisms.
In the present invention, a fluid stabilizing device, e.g., a weir device, is provided in the settling tank of the settling device for stabilizing the overflow. Alternatively, an aggregation device, such as a spatula, is provided in the settling tank of the settling device for aggregating the settled solid sludge.
The sludge returning device 175 is communicated with the sedimentation device 173, and is used for returning the sludge separated by sedimentation to the aeration treatment device or the stirring fermentation device for continuous treatment.
The liquid fertilizer storage device 177 is communicated with the sedimentation device 173 and is used for storing the liquid fertilizer separated by sedimentation. In the present invention, the liquid fertilizer storage device 177 may further include a liquid fertilizer storage tank and an aeration device.
According to the method, on one hand, a large amount of dead bacteria and nutrient substances contained in the biochemical sludge are used as culture solution components for microbial culture and propagation, so that propagation and amplification of aerobic microorganisms are greatly promoted, the aerobic biochemical treatment efficiency is improved, and meanwhile, compared with a mode of directly discharging the biochemical sludge in the prior art, the biochemical sludge can be effectively and directly utilized as resources, and the treatment cost of the sludge is reduced to a certain extent. On the other hand, the effluent of the sedimentation tank not only contains a large amount of living bacteria, but also contains the nutrient substances after transformation, so that the effluent can be directly used as a microbial liquid fertilizer.
And subsequently, the liquid fertilizer stored in the liquid fertilizer storage device can be transported out.
The invention also discloses a natural purification treatment method of the organic waste. The natural purification treatment method of the organic waste may be based on the natural purification treatment system of the organic waste in fig. 1 to 3.
Referring to fig. 4, a flow chart of the natural purifying treatment method of the organic waste according to the present invention is shown. As shown in fig. 4, the natural purification treatment method of the organic waste according to the present invention may include the steps of:
step S101, screening treatment is carried out on the raw water of the organic waste, and impurities in the raw water of the organic waste are removed.
Step S103, homogenizing the raw water of the organic waste. In practical application, in the process of homogenizing the organic waste raw water, the organic waste raw water is stirred, and the organic waste raw water is caused to circulate in a counterclockwise manner or a clockwise manner.
And step S105, carrying out solid-liquid separation treatment on the organic waste raw water subjected to the homogenization treatment, and separating to form a compost material and a liquid fertilizer fluid. In practical application, when solid-liquid separation treatment is carried out, the organic waste raw water is firstly separated for the first time and separated for the second time, then compost materials are output, and the rest part is subjected to primary adjustment and secondary adjustment, and then liquid fertilizer flowing liquid is output. The water content of the separated compost material is 60-90 wt%.
Step S107, stirring and fermenting the separated compost materials to enable the compost materials to be ripe; and composting and drying the compost material to ensure that organic substances which are not completely decomposed are decomposed continuously and are converted into decomposed compost.
Wherein the steps of stirring and fermenting the separated compost material comprise: adding a stirring material (such as sawdust, chaff, bean pulp, flue-cured tobacco straw, mushroom residue or any combination thereof) into the stored compost material, stirring and mixing the added stirring material and the compost material, and fermenting; during the fermentation process, air supply is performed.
After step S107, the produced compost may also be subjected to a packaging process.
Step S109, performing aerobic aeration treatment on the separated liquid fertilizer flow liquid; separating the liquid fertilizer flow liquid treated by aerobic aeration from the sludge by utilizing precipitation; returning the sludge separated by precipitation to continue aerobic aeration treatment, and storing the liquid fertilizer separated by precipitation.
In step S109, the performing aerobic aeration treatment on the separated liquid fertilizer fluid more specifically includes: stirring the liquid fertilizer flowing liquid, enabling the liquid fertilizer flowing liquid to flow in a serpentine flow path, and simultaneously aerating and injecting water to the liquid fertilizer flowing liquid.
The natural purification treatment system and the treatment method for the organic waste can carry out solid-liquid separation on the organic waste, convert the separated compost materials into decomposed compost after being subjected to stirring, fermentation, post-maturation and other treatments, and convert the separated liquid fertilizer into liquid fertilizer after being subjected to aerobic aeration treatment, sedimentation and other treatments.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. The natural purification treatment system of organic waste is characterized by comprising:
raw water treatment device, which is used to process the organic waste raw water;
the solid-liquid separation device is in fluid communication with the raw water treatment device and is used for carrying out solid-liquid separation treatment on the organic waste raw water subjected to homogenization treatment to separate a compost material and liquid fertilizer fluid; wherein the water content of the separated compost material is 60-90 wt%;
a composting line comprising: the stirring and fermenting device is communicated with the solid-liquid separation device and is used for stirring and fermenting the separated compost materials so as to ripen the compost materials; the after-ripening device is communicated with the stirring fermentation device and is used for composting and drying the compost material, so that organic substances which are not completely decomposed are decomposed continuously and converted into decomposed compost; and
liquid fertilizer production line includes: the aeration treatment device is communicated with the solid-liquid separation device and is used for carrying out aerobic aeration treatment on the separated liquid fertilizer flowing liquid; the sedimentation device is communicated with the aeration treatment device, and utilizes sedimentation to separate liquid fertilizer flow and sludge subjected to aerobic aeration treatment; the sludge returning device is communicated with the sedimentation device and is used for returning the sludge separated by sedimentation to the aeration treatment device or the stirring fermentation device; and the liquid fertilizer storage device is communicated with the precipitation device and is used for storing the liquid fertilizer separated through precipitation.
2. The natural purification treatment system for organic waste according to claim 1, wherein the raw water treatment apparatus comprises: the raw water storage pool group is provided with a plurality of raw water storage pools which are sequentially arranged and communicated; and the stirring equipment is arranged in each raw water storage pool and is used for stirring the raw water of the organic waste in the raw water storage pool and enabling the raw water of the organic waste to circularly flow in a counter-clockwise mode or a clockwise mode in a plurality of raw water storage pools of the raw water storage pool group.
3. The natural purification treatment system for organic waste according to claim 1, wherein the solid-liquid separation device comprises a solid-liquid separation chamber and a separation apparatus provided in the solid-liquid separation chamber, the solid-liquid separation chamber comprising: the primary separation tank and the secondary separation tank are communicated with the primary separation tank, and compost materials are output from the secondary separation tank; the liquid fertilizer flowing liquid is output from the secondary adjusting tank.
4. The natural purification treatment system for organic waste according to claim 1, wherein the stirring fermentation device comprises:
the stirring fermentation tank is used for storing compost materials;
the feeding equipment is used for feeding stirring materials into the stirring fermentation tank;
the stirring equipment is used for stirring and mixing the input stirring material and the composting material so as to ferment the stirring material and the composting material; and
and the air supply device is used for supplying air.
5. The natural purification treatment system for organic waste as claimed in claim 1, wherein said aeration treatment device comprises: the aeration tank group is provided with a plurality of aeration tanks which are sequentially communicated, and the first aeration tank is communicated with the solid-liquid separation device; the stirring equipment is arranged in each aeration pool and is used for stirring the liquid fertilizer flowing liquid in the aeration pool and enabling the liquid fertilizer flowing liquid to flow in a plurality of aeration pools of the aeration pool group in a serpentine flow path; the aeration equipment comprises an air pump and an aeration pipeline, wherein the aeration pipeline is connected with the air pump and is arranged at an air inlet of the aeration tank; the water injection device comprises a water pump and a water injection pipeline, wherein the water injection pipeline is connected with the water pump and is arranged at a water injection port of the aeration tank.
6. The natural purifying treatment method for the organic waste is characterized by comprising the following steps:
homogenizing the raw water of the organic waste;
carrying out solid-liquid separation treatment on the organic waste raw water subjected to homogenization treatment, and separating to form a compost material and liquid fertilizer flowing liquid; wherein the water content of the separated compost material is 60-90 wt%;
stirring and fermenting the separated compost materials to enable the compost materials to be ripe; composting and drying the compost material to enable organic substances which are not completely decomposed to be decomposed continuously and to be converted into decomposed compost; and
carrying out aerobic aeration treatment on the separated liquid fertilizer flow liquid; separating the liquid fertilizer flow liquid treated by aerobic aeration from the sludge by utilizing precipitation; returning the sludge separated by precipitation to continue aerobic aeration treatment, and storing the liquid fertilizer separated by precipitation.
7. The method for natural purification of organic waste according to claim 6, wherein the raw organic waste water is stirred and circulated in a counterclockwise or clockwise manner during the homogenization of the raw organic waste water.
8. The natural purification treatment method of organic waste according to claim 6, wherein the step of subjecting the raw water of organic waste subjected to the homogenization treatment to the solid-liquid separation treatment comprises: the organic waste raw water is firstly separated for the first time and separated for the second time, then the compost material is output, and the rest part is subjected to the first adjustment and the second adjustment, and then liquid fertilizer flowing liquid is output.
9. The method for natural purifying organic waste according to claim 6, wherein the step of stirring and fermenting the separated compost material comprises: adding stirring materials into the stored compost materials, stirring and mixing the added stirring materials with the compost materials, and fermenting; during the fermentation process, air supply is performed.
10. The method for natural purifying organic waste as claimed in claim 6, wherein the step of performing aerobic aeration treatment on the separated liquid fertilizer stream comprises: stirring the liquid fertilizer flowing liquid, enabling the liquid fertilizer flowing liquid to flow in a serpentine flow path, and simultaneously aerating and injecting water to the liquid fertilizer flowing liquid.
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| CN202311435143.0A CN117466673A (en) | 2023-11-01 | 2023-11-01 | Natural purification treatment system and treatment method for organic waste |
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