CN112028439B - Method for recycling sludge - Google Patents
Method for recycling sludge Download PDFInfo
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- CN112028439B CN112028439B CN202010866029.3A CN202010866029A CN112028439B CN 112028439 B CN112028439 B CN 112028439B CN 202010866029 A CN202010866029 A CN 202010866029A CN 112028439 B CN112028439 B CN 112028439B
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- 239000010802 sludge Substances 0.000 title claims abstract description 238
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004064 recycling Methods 0.000 title claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 238000000605 extraction Methods 0.000 claims abstract description 42
- 238000005189 flocculation Methods 0.000 claims abstract description 26
- 230000016615 flocculation Effects 0.000 claims abstract description 26
- 238000005086 pumping Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 74
- 238000000926 separation method Methods 0.000 claims description 48
- 238000005192 partition Methods 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 235000015097 nutrients Nutrition 0.000 claims description 4
- 239000003895 organic fertilizer Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 238000009313 farming Methods 0.000 abstract description 4
- 238000009360 aquaculture Methods 0.000 abstract description 3
- 244000144974 aquaculture Species 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 230000003311 flocculating effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/10—Cleaning bottoms or walls of ponds or receptacles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Environmental Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The application relates to the technical field of aquaculture sludge treatment, and discloses a method for sludge resource treatment, which comprises the following steps: the method comprises the following steps: preparing a sludge treatment system; step two: separating a region to be extracted with sludge; step three: separating the tank water from the sludge; step four: evacuating the inner cylinder; step five: pumping out sludge; step six: flocculation layering; step seven: resource treatment; step eight: and repeating the first step to the seventh step, and sequentially processing the rest areas of the culture library. By adopting the method, the disturbance to the culture library caused by sludge extraction can be greatly reduced, the turbidity of the pool water of the culture library can not be basically caused, the possibility that pollutants in the sludge are released into the pool water along with the disturbance is greatly reduced, and the secondary pollution of the culture library can not be caused; sludge does not need to be spread and dried or piled up, a large amount of farming land is not needed to be occupied for piling up the sludge, the occupied area is small, and the practicability is high.
Description
Technical Field
The invention belongs to the technical field of aquaculture sludge treatment.
Background
In recent years, the aquaculture industry has been greatly developed, and certain economic benefits are obtained. However, due to the long-term use and the increase of the culture amount of the culture library, a large amount of excrement is accumulated at the bottom of the culture library, so that the sludge at the bottom of the culture library is gradually increased, and the water storage amount of the culture library is gradually reduced. Therefore, cleaning the sludge at the bottom of the culture pond is an urgent problem to be solved.
At present, the sludge is basically cleaned by directly extracting and spreading on the farming land or the open land beside the bank of the culture storehouse. The method for cleaning the sludge can cause great disturbance to the culture pond, the pond water of the culture pond can be turbid in a large area, toxic and harmful substances in the sludge can be released into the pond water along with the disturbance, and secondary pollution of the pond water is caused.
Disclosure of Invention
The invention aims to provide a method for recycling sludge, which solves the problems that the existing sludge treatment method can generate great disturbance to a culture pond and cause resource waste.
In order to achieve the above object, the basic scheme of the present invention provides a method for sludge resource treatment, comprising the steps of:
the method comprises the following steps: preparing a sludge treatment system: the sludge treatment system comprises a sludge extraction device, a sludge flocculation device and a connecting pipe for connecting the sludge extraction device and the sludge flocculation device, wherein the sludge extraction device comprises a separation cylinder body, a separation plate is fixed at the bottom of the separation cylinder body, and the separation cylinder body is divided into a pond water part and a sludge part by the separation plate; an inner cylinder is fixed on the partition plate, a first opening is formed in the bottom of the inner cylinder, and a first sealing plug is matched with the first opening; a second opening is arranged on the partition plate, and a second sealing plug is matched with the second opening; the first opening and the second opening are both communicated with the sludge part; a water pumping unit for pumping water in the inner cylinder out of the inner cylinder is arranged in the inner cylinder and comprises a water pump arranged at the top of the inner cylinder, the water pump is connected with a water inlet pipe and a water outlet pipe, the end part of the water inlet pipe is positioned at the bottom of the inner cylinder, and the end part of the water outlet pipe is positioned in the separation cylinder; the first extraction unit is arranged in the inner cylinder body and comprises a sludge pump arranged at the top of the inner cylinder body, the sludge pump is connected with a sludge inlet pipe and a sludge outlet pipe, the sludge outlet pipe is communicated with the sludge flocculation device, and the sludge inlet pipe can enter the sludge part through a first opening;
step two: separating the area to be extracted: selecting a certain area of the culture library as an area to be extracted with sludge; keeping the first opening and the second opening in an open state, longitudinally inserting the separation cylinder into a region to be extracted with sludge, separating the region to be extracted with sludge from other regions, and positioning the separation plate above the sludge;
step three: separating water and sludge in the tank: respectively inserting the first sealing plug and the second sealing plug into the first opening and the second opening, and sealing the first opening and the second opening to separate pool water from sludge;
step four: evacuating the inner cylinder: starting a water pump, pumping pool water in the inner cylinder into the separating cylinder, and pumping out the inner cylinder;
step five: sludge is extracted: taking down the first sealing plug, opening the first opening, and allowing the bottom of the sludge inlet pipe to penetrate through the first opening and enter the sludge part; starting a sludge pump, and pumping sludge in the sludge part into a sludge flocculation device;
step six: flocculation and layering: flocculating and precipitating the sludge entering the sludge flocculating device to separate the sludge precipitate into a sewage layer and a sludge layer;
step seven: resource treatment: discharging the sewage in the sewage layer and using the sewage in the sewage layer to prepare a plant nutrient solution; discharging sludge in the sludge layer and using the sludge to prepare organic fertilizer;
step eight: and repeating the first step to the seventh step, and sequentially processing the rest areas of the culture library.
The principle and the beneficial effect of the basic scheme are as follows:
(1) in the method, the area in which the sludge is to be extracted is separated from other areas, so that the condition that the area in which the sludge is to be extracted disturbs other areas when the sludge is extracted to cause large-area turbidity of the culture pond is avoided. Most of the pond water and the sludge are separated by the separation plate, the first sealing plug and the second sealing plug, so that the disturbance to the pond water in the separation barrel during sludge extraction is reduced, and the possibility of turbidity of the pond water due to sludge extraction is reduced. And then, the pool water in the inner cylinder body is pumped into the separating cylinder body, and the sludge is pumped out by the first pumping unit, so that the sludge is pumped out and separated from the pool water, and the adverse effect of the sludge pumping on the pool water is greatly reduced. And finally, performing flocculation precipitation on the extracted sludge by using a sludge flocculation device to realize the layering of sewage and sludge, wherein the layered sewage is used for preparing plant nutrient solution, and the sludge is discharged and used for preparing organic fertilizer, so that the recycling treatment of the sludge is realized, and the resource waste is reduced.
(2) By adopting the method, the sludge in the culture pond can be effectively removed, and the recycling treatment of the sludge is realized. Meanwhile, the disturbance to the culture pond caused by sludge extraction can be greatly reduced, the turbidity of the pond water of the culture pond can not be basically caused, the possibility that pollutants in the sludge are released into the pond water along with the disturbance is greatly reduced, and the secondary pollution of the culture pond can not be caused. In addition, the method for recycling the sludge is adopted to carry out recycling treatment on the sludge, and the sludge does not need to be aired or piled up, so that the smell emitted by the sludge is small, the influence on the air is very small, the influence on the life of surrounding residents is avoided, a large amount of farming land is not needed to be occupied for piling up the sludge, only a small part of area is reserved on the bank side for placing parts such as a sludge flocculation device, and the land occupation area is small, and the practicability is high.
Optionally, in the first step, the sludge inlet pipe comprises a corrugated pipe section and a rigid section, the corrugated pipe section is connected with the sludge pump, and the rigid section can enter the sludge part through the first opening.
The corrugated pipe section has good ductility and flexibility, and an operator can conveniently pull the mud inlet pipe to adjust the position of the mud inlet pipe; and the setting of rigidity section, then can reduce into rocking of mud pipe bottom, make things convenient for the operator to insert the first opening with the bottom of rigidity section, improve male accuracy.
Optionally, the bottom of the rigid section is connected with a horizontally arranged telescopic pipe, and an adjusting unit for adjusting the extension length of the telescopic pipe is arranged on the telescopic pipe.
Through the arrangement of the telescopic pipe and the adjusting unit, sludge within the range taking the length of the telescopic pipe as the radius can be extracted, the extraction range of the sludge is enlarged, and the sludge extraction effect in the culture pond is improved.
Optionally, the adjusting unit comprises a first elastic member and a traction rope fixed at the end of the telescopic pipe, and one end of the first elastic member, which is far away from the telescopic pipe, is fixed on the rigid section of the mud inlet pipe; the bottom of rigidity section is equipped with first branch, and the top of rigidity section is equipped with second branch, and the haulage rope is walked around first branch after-fixing on second branch.
Through the cooperation of haulage rope and first elastic component, can freely adjust the extension length of flexible pipe to the scope of increase mud extraction promotes the effect of mud extraction in breeding the storehouse.
Optionally, in the first step, a second extraction unit for assisting in extracting sludge is further arranged on the separation cylinder, the second extraction unit includes a plurality of L-shaped pipeline holes longitudinally formed in the inner wall of the separation cylinder, the bottoms of the pipeline holes are communicated with the sludge portion, and a sealing unit for controlling the bottoms of all the pipeline holes to open and close is arranged in the sludge portion; the top of the pipeline hole is fixed with a branch pipe, all branch pipes are connected with a converging pipe, and the converging pipe is communicated with a mud inlet pipe.
Through the setting of second extraction unit, after the sludge pump starts, utilize the cooperation that joins pipe, branch pipe, pipeline hole for separate near mud of barrel inside wall can be pumped to the upper portion of advancing mud pipe rigidity section, and get into the sludge pump through the ripple pipeline section, accelerated the extraction speed of mud, also avoid being located the condition that can't take out of near mud of separating the barrel inside wall simultaneously, promoted the extraction effect of mud in breeding the storehouse.
Optionally, the sealing unit includes a sealing ring plate slidably connected to the bottom of the separation cylinder, the sealing ring plate can seal the bottoms of all the pipe holes, and a resisting plate is fixed to the top of the sealing ring plate and extends to a position below the second opening; the top of the abutting plate is provided with a second elastic piece which is fixed on the inner wall of the separation cylinder.
When the second sealing plug is inserted into the second opening and moves downwards, the bottom of the plug body of the second sealing plug can gradually contact with the top of the abutting plate and push the abutting plate to slide downwards, and the abutting plate drives the sealing ring plate to move downwards, so that the bottom openings of all pipeline holes are opened, and sludge can enter the pipeline holes. When the second sealing plug is drawn out upwards, the sealing ring plate can reset upwards under the action of the restoring force of the second elastic element, so that the bottom opening of the pipeline hole is sealed again. The sealing unit is simple in structure, convenient to operate and easy to realize.
Optionally, the sealing unit further includes a plurality of guide assemblies for guiding the sealing ring plate, the guide assemblies include sliding blocks fixed on the sealing ring plate and sliding grooves formed in the inner wall of the separation cylinder, and the sliding blocks are longitudinally slidably connected in the sliding grooves.
Through the cooperation of slider and spout, can lead the longitudinal movement of sealing ring board, promote the stability and the reliability that sealing ring board removed.
Optionally, in the first step, the first sealing plug and the second sealing plug each include a plug body and an operating rod fixed on the plug body, and the height of the operating rod is greater than the distance from the partition plate to the top of the partition cylinder.
Through the operating rod, an operator can conveniently insert the plug body into the first opening/the second opening to realize the sealing of the first opening/the second opening. And the height of the operating rod is greater than the distance from the partition plate to the top of the partition cylinder, so that the operating rod can be exposed out of the water as far as possible, and an operator can conveniently perform corresponding operation.
Optionally, after the seventh step, a step of returning the pond water is further included: and opening the second opening to make part of the pond water in the separation cylinder body flow back to the sludge part.
Through pond water backward flow step, can let pond water flow back gradually in the mud portion to separate pond water backward flow and the pond water in other regions, reduced the adverse effect that pond water, mud caused when the pond water backward flow around to.
Optionally, the step of returning the pond water further comprises: after the pool water flows back, the separation cylinder body continuously stands still in the sludge for 10-30min, and then the separation cylinder body is extracted from the sludge.
In-process that the pond water flows back to mud portion, the pond water that is located mud portion can take place certain degree muddy, and separate the barrel this moment and continue to stew in mud for 10-30min, can let the muddy pond water of taking place among the mud portion layering of stewing, let the muddy turbidity that causes by the impact disappear gradually, reduce the muddy phenomenon of pond water that the pond water backward flow caused by a wide margin, reduce or even avoid this kind of muddy disturbance or muddy that cause other regions in breed storehouse, reduce the probability that secondary pollution takes place.
Drawings
FIG. 1 is a longitudinal sectional view of a sludge treatment system in a method for sludge resource treatment according to the present invention;
FIG. 2 is a plan view of a sludge treatment system in a method for sludge resource treatment according to the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: sludge extraction device 1, sludge flocculation device 2, connecting pipe 3, partition barrel 4, partition plate 5, interior barrel 6, first opening 7, first sealing plug 8, second opening 9, second sealing plug 10, water pump 11, inlet tube 12, outlet pipe 13, sludge pump 14, play mud pipe 15, ripple pipeline section 17, rigidity section 18, flexible pipe 19, first elastic component 20, haulage rope 21, first branch pole 22, second branch pole 23, pipeline hole 24, branch pipe 25, join pipe 26, seal ring board 27, resisting board 28, second elastic component 29, spout 30.
Example 1
A method for recycling sludge comprises the following steps:
the method comprises the following steps: preparing a sludge treatment system: with the combination of the attached drawings 1 and 2, the sludge treatment system comprises a sludge extraction device 1, a sludge flocculation device 2 and a connecting pipe 3 for connecting the sludge extraction device 1 and the sludge flocculation device 2, wherein the sludge extraction device 1 mainly comprises a separation cylinder 4, a separation plate 5, an inner cylinder 6, a first sealing plug 8, a second sealing plug 10, a water pumping unit and a first extraction unit, the separation plate 5 made of a transparent material is welded at the bottom of the separation cylinder 4, and the distance between the separation plate 5 and the bottom of the separation cylinder 4 is 8-10 cm. The division plate 5 divides the division cylinder 4 into a pool water part and a sludge part, and the pool water part is positioned above the sludge part. Interior barrel 6 welding is located at the center of division board 5, and 6 bottom centers of interior barrel department has seted up first opening 7, first opening 7 and mud portion intercommunication, and first sealing plug 8 can seal first opening 7. A second opening 9 is formed in the left side portion of the partition plate 5, the second opening 9 is communicated with the sludge portion and provided with a sealing ring, and a second sealing plug 10 is inserted into the second opening 9 and then can seal the second opening 9. Of course, the second opening 9 may be provided in two, respectively at the left and right side portions of the partition plate 5, and sealed by two second sealing plugs 10, respectively. The first sealing plug 8 and the second sealing plug 10 are both composed of a plug body and an operating rod, the plug body is used for blocking the first opening 7/the second opening 9, the operating rod is welded on the top of the plug body, and the height of the operating rod is larger than the distance from the partition plate 5 to the top of the partition cylinder 4; wherein, after the plug body of the second sealing plug 10 is inserted into the second opening 9, the bottom of the second sealing plug can extend 95-8cm out of the second opening.
The water pumping unit is arranged on the inner cylinder body 6 and used for pumping water in the inner cylinder body 6 to the outside of the inner cylinder body 6, the water pumping unit comprises a water pump 11 arranged at the top of the inner cylinder body 6, the input end of the water pump 11 is communicated with a water inlet pipe 12, and the end part of the water inlet pipe 12 is positioned at the bottom of the inner cylinder body 6; the output end of the water pump 11 is communicated with a water outlet pipe 13, and the end part of the water outlet pipe 13 is positioned in the separation cylinder 4. The first extraction unit is arranged in the inner cylinder 6 and used for extracting sludge in the sludge part, the first extraction unit comprises a sludge pump 14 arranged at the top of the inner cylinder 6, the output end of the sludge pump 14 is connected with a sludge inlet pipe, the output end of the sludge pump 14 is connected with a sludge outlet pipe 15, the sludge outlet pipe 15 is communicated with a communicating pipe, and the communicating pipe is communicated with the sludge flocculation device 2; the sludge inlet pipe comprises a corrugated pipe section 17 and a rigid section 18, the corrugated pipe section 17 is connected with the sludge pump 14, and the rigid section 18 can enter the sludge part through the first opening 7. A horizontally arranged telescopic tube 19 is fixedly arranged at the bottom end of the rigid section 18, an adjusting unit for adjusting the extension length of the telescopic tube 19 is arranged on the telescopic tube 19, and when the telescopic tube 19 is contracted to the minimum length, the telescopic tube 19 and the rigid section 18 can pass through the first opening 7 together. The adjusting unit mainly comprises a first elastic part 20, a traction rope 21, a first support rod 22 and a second support rod 23, the first support rod 22 is welded at the bottom of the rigid section 18, the second support rod 23 is welded at the top of the rigid section 18, the first elastic part 20 is a pressure spring, one end of the first elastic part 20 is fixed on the rigid section 18, and the other end of the first elastic part is fixed on the end part of the telescopic pipe 19 far away from the rigid section 18; one end of the pulling rope 21 is fixed on the end of the telescopic pipe 19 far away from the rigid section 18, and the other end is fixed on the second support rod 23 after passing through the first support rod 22.
Step two: separating the area to be extracted: selecting a certain area of the culture library as an area to be extracted with sludge; the first opening 7 and the second opening 9 are kept in an open state, and the partition cylinder 4 is longitudinally inserted into the area to be extracted with sludge to partition the area to be extracted with sludge from the other areas, and the partition plate 5 is located 2 to 15cm, preferably 5cm, above the top surface of the sludge.
Step three: separating water and sludge in the tank: the first sealing plug 8 and the second sealing plug 10 are respectively inserted into the first opening 7 and the second opening 9, the first opening 7 and the second opening 9 are sealed, pool water and sludge are separated, stirring of the pool water during sludge extraction is reduced, and the probability of secondary pollution of the pool water is reduced.
Step four: evacuating the inner cylinder 6: the water pump 11 is started to pump the pool water in the inner cylinder 6 to the space between the separation cylinder 4 and the inner cylinder 6, the inner cylinder 6 is pumped out, and the pool water in the inner cylinder 6 is prevented from influencing the sludge pumping work.
Step five: sludge pumping: after the pond water of the inner cylinder 6 is pumped out, the first sealing plug 8 is taken down, the first opening 7 is opened, the bottom of the rigid section 18 of the sludge inlet pipe and the extension pipe 19 pass through the first opening 7 and extend into the sludge part, the sludge pump 14 is started, and the sludge near the opening of the extension pipe 19 (namely near the center of the sludge part) is pumped into the sludge flocculation device 2; then, the hauling rope 21 fixed on the second support rod 23 is unfastened, the extension pipe 19 is extended for a certain length under the action of the restoring force of the first elastic piece 20, the extension pipe 19 slowly rotates the rigid section 18 in the process of extracting the sludge, and the extension pipe 19 extracts the sludge within the range taking the length of the extension pipe 19 as the radius; the pulling rope 21 is further loosened to extend the telescopic pipe 19 for a longer length, so that sludge in a larger radius range is extracted, and the circulation is performed until all sludge in the sludge part is pumped into the sludge flocculation apparatus 2.
Mud is at the in-process of extraction, along with the diminishing gradually of mud, separates barrel 4 under the effect of pond water gravity and self gravity, can further go deep into mud, continues to extract and is located originally and separates the mud of barrel 4 below, and then promotes the extraction effect of breed storehouse mud.
Step six: flocculation and layering: adding a proper amount of flocculating agent into the sludge in the sludge flocculation device 2, stirring for 15-30min to fully mix the flocculating agent with the sludge, standing the sludge, flocculating and precipitating the sludge in the sludge flocculation device 2 to stratify the sludge precipitate to form a sewage layer and a sludge layer.
Step seven: resource treatment: discharging the sewage in the sewage layer and using the sewage in the sewage layer to prepare a plant nutrient solution; and discharging sludge in the sludge layer and using the sludge to prepare organic fertilizer.
Step eight: refluxing pool water: and (3) upwards drawing out the second sealing plug 10, and opening the second opening 9, so that the sludge part and the pond water part are communicated again, and part of pond water in the separation cylinder 4 is gradually returned to the sludge part to finish the pond water playback. And continuously standing the separation cylinder body 4 for 10-30min, and extracting the separation cylinder body 4 from the sludge.
Step nine: and repeating the first step to the eighth step, and treating the rest areas of the culture library in sequence until most of or even all sludge at the bottom of the culture library is completely extracted.
By adopting the sludge recycling treatment method, the sludge in the culture pond can be effectively removed, and the sludge recycling treatment can be realized. Meanwhile, by adopting the method, the disturbance on the culture pond caused by sludge extraction can be greatly reduced, the turbidity of the pond water of the culture pond can not be basically caused, the possibility that pollutants in the sludge are released into the pond water along with the disturbance is greatly reduced, and the secondary pollution of the culture pond can not be caused. In addition, the method for recycling the sludge is adopted to carry out recycling treatment on the sludge, and the sludge does not need to be aired or piled up, so that the smell emitted by the sludge is small, the influence on the air is very small, the influence on the life of surrounding residents is avoided, a large amount of farming land is not needed to be occupied for piling up the sludge, only a small part of area is reserved on the bank side for placing parts such as the sludge flocculation device 2, and the method is small in occupied area and high in practicability.
Example 2
The present embodiment is different from embodiment 1 in that: the sludge treatment system in the first step further comprises a second extraction unit which is arranged on the separation cylinder 4 and is used for assisting in extracting the sludge. Referring to fig. 1 and 2, the second extraction unit mainly comprises a plurality of pipe holes 24, a plurality of branch pipes 25 and a confluence pipe 26, wherein the plurality of pipe holes 24 are uniformly distributed in the side wall of the separation cylinder 4 and are longitudinally arranged, the pipe holes 24 are L-shaped, the branch pipes 25 are fixedly arranged at the tops of the pipe holes 24, all the branch pipes 25 are jointly communicated with the confluence pipe 26, and the confluence pipe 26 is communicated with the rigid section 18 of the mud inlet pipe; the bottom openings of the pipeline holes 24 are arranged at the positions 1-3cm away from the bottom end of the separation cylinder 4 and communicated with the sludge part, and sealing units for controlling the opening and closing of the bottom openings of all the pipeline holes 24 are arranged in the sludge part. The sealing unit comprises a sealing ring plate 27 which is longitudinally connected on the inner wall of the bottom of the separation cylinder 4 in a sliding way, and the sealing ring plate 27 seals the bottom openings of all the pipeline holes 24; a resisting plate 28 is welded at the top of the sealing ring plate 27, and one end of the resisting plate 28, which is far away from the sealing ring plate 27, extends to a position 1-3cm under the second opening 9, so that when the second sealing plug 10 is inserted into the second opening 9, the resisting plate 28 can be pushed to move downwards, and the bottom opening of the pipeline hole 24 is opened; a second elastic member 29 is fixed at the top end of the abutting plate 28, the second elastic member 29 is a tension spring, and one end of the second elastic member 29 far away from the abutting plate 28 is fixed on the inner wall of the partition cylinder 4. The sealing unit further comprises a plurality of guide assemblies (four are taken as an example for explanation in the embodiment), the guide assemblies are uniformly distributed on the inner wall of the separation barrel 4, each guide assembly mainly comprises a sliding groove 30 and a sliding block, the sliding grooves 30 are longitudinally formed in the inner wall of the bottom of the separation barrel 4, and the sliding blocks are welded on the sealing ring plate 27 and can longitudinally slide along the sliding grooves 30.
In this embodiment, in the process that the second sealing plug 10 is inserted into the second opening 9 and moves downward, the bottom of the plug body of the second sealing plug 10 gradually contacts with the top of the abutting plate 28 and pushes the abutting plate 28 to slide downward, and the abutting plate 28 drives the sealing ring plate 27 to move downward, so that the bottom openings of all the pipeline holes 24 are opened, and sludge can enter the pipeline holes 24. When the second sealing plug 10 is drawn out upward, the sealing ring plate 27 is restored upward by the restoring force of the second elastic member 29, thereby sealing the bottom opening of the duct hole 24 again.
Through the setting of second extraction unit, after sludge pump 14 starts, utilize and join pipe 26, branch pipe 25, pipeline hole 24's cooperation, make and separate near mud of barrel 4 inside wall and can be pumped into the upper portion that advances mud pipe rigidity section 18, and in getting into sludge pump 14 through ripple pipeline section 17, the extraction speed of mud has been accelerated, also avoid being located the condition that can't take out near the mud of separating near the barrel 4 inside wall simultaneously, the extraction effect of mud in the breed storehouse has been promoted.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. A method for recycling sludge is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: preparing a sludge treatment system: the sludge treatment system comprises a sludge extraction device, a sludge flocculation device and a connecting pipe for connecting the sludge extraction device and the sludge flocculation device, wherein the sludge extraction device comprises a separation cylinder body, a separation plate is fixed at the lower part of the separation cylinder body, and the separation cylinder body is divided into a pond water part and a sludge part by the separation plate; an inner cylinder is fixed on the partition plate, a first opening is formed in the bottom of the inner cylinder, and a first sealing plug is matched with the first opening; a second opening is arranged on the partition plate, and a second sealing plug is matched with the second opening; the first opening and the second opening are both communicated with the sludge part; a water pumping unit for pumping water in the inner cylinder out of the inner cylinder is arranged in the inner cylinder and comprises a water pump arranged at the top of the inner cylinder, the water pump is connected with a water inlet pipe and a water outlet pipe, the end part of the water inlet pipe is positioned at the bottom of the inner cylinder, and the end part of the water outlet pipe is positioned in the separation cylinder; the inner cylinder body is also internally provided with a first extraction unit for extracting sludge, the first extraction unit comprises a sludge pump arranged at the top of the inner cylinder body, the sludge pump is connected with a sludge inlet pipe and a sludge outlet pipe, the sludge outlet pipe is communicated with the sludge flocculation device, and the sludge inlet pipe passes through the first opening and enters the sludge part;
step two: separating the area to be extracted: selecting a certain area of the culture library as an area to be extracted with sludge; keeping the first opening and the second opening in an open state, longitudinally inserting the separation cylinder into a region to be subjected to sludge extraction, separating the region to be subjected to sludge extraction from other regions, and positioning the separation plate above the sludge;
step three: separating the water and the sludge in the tank: respectively inserting the first sealing plug and the second sealing plug into the first opening and the second opening, and sealing the first opening and the second opening to separate pool water from sludge;
step four: evacuating the inner cylinder: starting a water pump, pumping pool water in the inner cylinder into the separating cylinder, and pumping out the inner cylinder;
step five: sludge is extracted: taking down the first sealing plug, opening the first opening, and allowing the bottom of the sludge inlet pipe to penetrate through the first opening and enter the sludge part; starting a sludge pump, and pumping sludge in the sludge part into a sludge flocculation device;
step six: flocculation and layering: performing flocculation precipitation on the sludge entering the sludge flocculation device, and layering the sludge precipitate to form a sewage layer and a sludge layer;
step seven: resource treatment: discharging the sewage in the sewage layer and using the sewage in the sewage layer to prepare plant nutrient solution; discharging sludge in the sludge layer and using the sludge to prepare an organic fertilizer;
step eight: and repeating the first step to the seventh step, and sequentially processing the rest areas of the culture library.
2. The method for recycling sludge according to claim 1, wherein: in the first step, the sludge inlet pipe comprises a corrugated pipe section and a rigid section, the corrugated pipe section is connected with a sludge pump, and the rigid section penetrates through the first opening and enters the sludge part.
3. The method for recycling sludge as claimed in claim 2, wherein: the bottom of the rigid section is connected with a telescopic pipe which is horizontally arranged, and the telescopic pipe is provided with an adjusting unit for adjusting the extension length of the telescopic pipe.
4. The method for recycling sludge according to claim 3, wherein: the adjusting unit comprises a first elastic piece and a traction rope which are fixed at the end part of the telescopic pipe, and one end of the first elastic piece, which is far away from the telescopic pipe, is fixed on the rigid section of the mud inlet pipe; the bottom of rigidity section is equipped with first branch, and the top of rigidity section is equipped with second branch, and the haulage rope is walked around first branch after-fixing on second branch.
5. The method for sludge resource treatment according to claim 1, characterized in that: in the first step, a second extraction unit for assisting in extracting the sludge is further arranged on the separation cylinder body, the second extraction unit comprises a plurality of L-shaped pipeline holes longitudinally formed in the inner wall of the separation cylinder body, the bottoms of the pipeline holes are communicated with the sludge part, and a sealing unit for controlling the bottoms of all the pipeline holes to be opened and closed is arranged in the sludge part; the top of the pipeline hole is fixed with a branch pipe, all branch pipes are connected with a converging pipe, and the converging pipe is communicated with a mud inlet pipe.
6. The method for sludge resource treatment according to claim 5, characterized in that: the sealing unit comprises a sealing ring plate which is connected to the bottom of the separating cylinder in a sliding manner, the sealing ring plate can seal the bottoms of all pipeline holes, a resisting plate is fixed to the top of the sealing ring plate, and the resisting plate extends to the position below the second opening; the top of the abutting plate is provided with a second elastic piece which is fixed on the inner wall of the separation cylinder.
7. The method for sludge resource treatment according to claim 6, characterized in that: the sealing unit further comprises a plurality of guide assemblies for guiding the sealing ring plate, each guide assembly comprises a sliding block fixed on the sealing ring plate and a sliding groove formed in the inner wall of the separation barrel, and the sliding blocks are longitudinally connected in the sliding grooves in a sliding mode.
8. The method for recycling sludge according to claim 1, wherein: in the first step, the first sealing plug and the second sealing plug respectively comprise a plug body and an operating rod fixed on the plug body, and the height of the operating rod is greater than the distance from the partition plate to the top of the partition cylinder.
9. The method for sludge resource treatment according to claim 1, characterized in that: after the seventh step, the method also comprises a step of refluxing the pool water: and opening the second opening to make part of the pool water in the separation cylinder return to the sludge part.
10. The method for sludge resource treatment according to claim 9, characterized in that: the step of pond water backflow further comprises: after the water in the tank flows back, the separating cylinder is continuously placed in the sludge for 10-30min, and then the separating cylinder is extracted from the sludge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010866029.3A CN112028439B (en) | 2020-08-25 | 2020-08-25 | Method for recycling sludge |
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| CN202010866029.3A CN112028439B (en) | 2020-08-25 | 2020-08-25 | Method for recycling sludge |
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| CN112028439B true CN112028439B (en) | 2022-07-15 |
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| US4257900A (en) * | 1979-02-26 | 1981-03-24 | Alar Engineering Corporation | Method of clarifying liquids |
| CN204958494U (en) * | 2015-08-31 | 2016-01-13 | 张家港市格锐环境工程有限公司 | Sewage adjusting pool's mud cleaning device |
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| CN109011732A (en) * | 2018-09-25 | 2018-12-18 | 哈尔滨北方环保工程有限公司 | A kind of hydraulic disturbance device for being disturbed to sewage pool bottom sediments mud |
| CN109867396A (en) * | 2019-04-04 | 2019-06-11 | 吴小芳 | Immersion pond water-purifying circulation device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPS106302A0 (en) * | 2002-03-13 | 2002-04-11 | Mcrobert, Ian | Waste water extraction system |
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2020
- 2020-08-25 CN CN202010866029.3A patent/CN112028439B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4257900A (en) * | 1979-02-26 | 1981-03-24 | Alar Engineering Corporation | Method of clarifying liquids |
| CN204958494U (en) * | 2015-08-31 | 2016-01-13 | 张家港市格锐环境工程有限公司 | Sewage adjusting pool's mud cleaning device |
| CN108496873A (en) * | 2018-03-09 | 2018-09-07 | 苏昭强 | A kind of self-loopa cleaning mud aquaculture pond |
| CN109011732A (en) * | 2018-09-25 | 2018-12-18 | 哈尔滨北方环保工程有限公司 | A kind of hydraulic disturbance device for being disturbed to sewage pool bottom sediments mud |
| CN109867396A (en) * | 2019-04-04 | 2019-06-11 | 吴小芳 | Immersion pond water-purifying circulation device |
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| CN112028439A (en) | 2020-12-04 |
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