CN109809641B - Sewage treatment system and method - Google Patents
Sewage treatment system and method Download PDFInfo
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- CN109809641B CN109809641B CN201910208461.0A CN201910208461A CN109809641B CN 109809641 B CN109809641 B CN 109809641B CN 201910208461 A CN201910208461 A CN 201910208461A CN 109809641 B CN109809641 B CN 109809641B
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Abstract
The invention relates to a sewage treatment system, which comprises a filter tank, an adjusting tank, an anaerobic tank, an oxidation tank, a sedimentation tank and a clean water tank which are connected in sequence, wherein the clean water tank is communicated with a drainage channel; a filter screen frame is rotatably arranged in the filter tank, two sides opposite to the filter screen frame are respectively provided with a concave slide rail, a filter screen bag which collects sundries along with the rotation of the filter screen frame is arranged on the filter screen frame, and an elastic device which is abutted against two ends of the slide rail and is used for keeping the opening of the bag mouth is arranged at the bag mouth of the filter screen bag; bag ears extend from the bag opening of the filter screen bag, and a lifting hook for hooking the bag ears is rotatably arranged above the filter tank. By providing the sewage treatment system and method, the invention greatly improves the cleaning efficiency of impurities while primarily filtering the sewage, thereby ensuring the normal and stable operation of the sewage treatment station.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system and a sewage treatment method.
Background
With the continuous improvement of the living standard of residents in China, environmental pollution hinders the sustainable development of economy and becomes a problem which cannot be ignored. At present in domestic sewage's purification treatment process, generally utilize the grid to carry out preliminary separation to thick debris in the sewage earlier and keep off to do preliminary preparation for subsequent sewage purification to guarantee the normal steady operation at sewage treatment station.
When the debris that the grid kept off accumulated excessively, need clear up, otherwise can influence the flow of sewage thereby reduce sewage treatment's efficiency. At the moment, an operator is required to clean the bottom of the channel and transport the sundries, so that the time and the labor for cleaning the sundries are consumed, and the cleaning work efficiency is low.
Disclosure of Invention
The invention aims to provide a sewage treatment system and a sewage treatment method, which can greatly improve the cleaning efficiency of sundries while primarily filtering sewage, thereby ensuring the normal and stable operation of a sewage treatment station.
The above object of the present invention is achieved by the following technical solutions:
a sewage treatment system comprises a filter tank, an adjusting tank, an anaerobic tank, an oxidation tank, a sedimentation tank and a clean water tank which are connected in sequence, wherein the clean water tank is communicated with a drainage channel, a dispensing stirring tank is arranged on the sedimentation tank, and the bottom of the sedimentation tank is connected with a dewatering device through a mud pump; a first rotating shaft horizontally penetrates through the filtering tank, and a first motor for driving the first rotating shaft is horizontally arranged on the outer side wall of the filtering tank; the two opposite sides of the outer peripheral surface of the first rotating shaft extend outwards in the radial direction to form a filter screen frame, the filter screen frame comprises an installation seat fixed on the outer peripheral surface of the first rotating shaft, and sliding rails extend outwards from the two sides of the installation seat; a second concave arc part is arranged in the middle of the slide rail, and when the opening of the second concave arc part of the slide rail on one side of the first rotating shaft faces downwards, the opening of the second concave arc part of the slide rail on the other side of the first rotating shaft faces upwards; a filter screen bag which collects sundries along with the rotation of the filter screen frame is arranged on the filter screen frame, and an elastic device which is abutted against the two ends of the slide rail and is used for keeping the opening of the bag mouth is arranged at the bag mouth of the filter screen bag; bag ears extend from the bag opening of the filter screen bag, and a lifting hook for hooking the bag ears is rotatably arranged above the filter tank.
Through adopting above-mentioned technical scheme, set up the anaerobism pond, be favorable to utilizing anaerobism microorganism's effect, make the organic matter take place to hydrolyze, acidize and methanation, remove the organic matter in the sewage to improve the biodegradability of sewage, be favorable to subsequent aerobic treatment. The arrangement of the oxidation pond is beneficial to carrying out biological metabolism by utilizing aerobic microorganisms under the condition of existence of oxygen so as to degrade organic matters. Install the agitator tank that dispenses on the sedimentation tank, be favorable to accelerating the sediment of mud through adding medicine in toward the sedimentation tank to improve domestic sewage's treatment effeciency. A rotary screen frame is arranged in the filtering tank, a screen bag is placed on the screen frame, and sundries are collected into the screen bag through the rotation of the screen frame. When a certain amount of sundries are collected in the filter screen bag, the filter screen bag falls down under the action of gravity along with the rotation of the filter screen frame, so that two sides of the bag opening shrink downwards along the slide rail to form a concave part. The rotary lifting hook hooks the bag ear, so that the filter screen bag collected with sundries is hooked away from the filter screen frame. The device greatly improves the cleaning efficiency of sundries when performing primary filtration on sewage, thereby ensuring the normal and stable operation of the sewage treatment station.
The invention is further configured to: the elastic device comprises a first mounting column and a second mounting column which are respectively mounted on two sides of the bag opening, a base is fixed on the first mounting column, a telescopic rod which slides relative to the base is embedded in the base, one end of the telescopic rod, which extends out of the base, is fixed on the second mounting column, and a spring with two ends respectively abutted to the bottom of the base and the telescopic rod is arranged in the base.
Through adopting above-mentioned technical scheme, when collecting a certain amount of debris in the filter screen bag, along with the rotatory rise of filter screen frame, the filter screen bag is tenesmus under the action of gravity. At the moment, the first mounting column and the second mounting column are close to each other along the concave part of the sliding rail, so that the telescopic rod is pressed to retract into the base and compress the spring.
The invention is further configured to: one end of the telescopic rod in the base is provided with a limiting plate protruding radially towards the inner wall of the base, and one end of the base sleeve outside the telescopic rod is provided with a baffle protruding radially towards the outer wall of the telescopic rod.
Through adopting above-mentioned technical scheme, set up baffle and limiting plate on base and telescopic link respectively, make base and telescopic link form one kind in the axial and separate the fender relation, make the telescopic link slide in the base more smoothly, reduce the telescopic link and deviate from the possibility of base.
The invention is further configured to: one end of the sliding rail is provided with a first clamping seat used for clamping the first mounting column, and the other end of the sliding rail is provided with a second clamping seat used for clamping the second mounting column.
Through adopting above-mentioned technical scheme, set up first cassette and second cassette respectively at the slide rail both ends, be favorable to reducing the possibility that the filter screen bag breaks away from the filter screen frame, effectively guaranteed the clearance effect to debris.
The invention is further configured to: a central guide cylinder is arranged in the sedimentation tank.
Through adopting above-mentioned technical scheme, the sewage that contains impurity is discharged into the sedimentation tank via central draft tube top-down, is favorable to impurity evenly distributed in the sedimentation tank, then slowly rises along the whole section in pond, greatly reduced the suspended solid impurity in the sewage possibility of diffusing everywhere.
The invention is further configured to: the top of the sedimentation tank is provided with a water outlet, the top of the dispensing stirring tank is provided with a water inlet, one side of the sedimentation tank is provided with a water pump, and the water pump is communicated with the water outlet and the water inlet through a pipeline.
Through adopting above-mentioned technical scheme, set up the water pump and take out the supernatant of sedimentation tank toward the agitator tank that dispenses, can replace water to reach the effect of water economy resource with the supernatant. Through water pump extraction supernatant and make the supernatant spout from the water inlet high speed, be favorable to supplementary agitated vessel to carry out intensive mixing to the solution in the agitator tank that dispenses, effectively reduced the degree of wear of agitated vessel at the stirring in-process to agitated vessel's operation and later maintenance expense have been reduced.
The invention is further configured to: the water inlet is connected with a nozzle positioned in the dispensing stirring tank.
Through adopting above-mentioned technical scheme, be favorable to the supernatant to spout high-speed to the agitator tank that dispenses from the water inlet in, effectively increased the rotation rate of solution in the agitator tank that dispenses to improve the preparation efficiency of solution greatly, alleviateed mechanical stirring equipment's burden.
The invention is further configured to: a low-speed submersible mixer is arranged in the regulating tank.
Through adopting above-mentioned technical scheme, be favorable to reducing the possibility that the impurity in the sewage directly deposits in the equalizing basin to the burden of equalizing basin has been alleviateed. Meanwhile, due to the arrangement of the low-speed submersible mixer, impurities can flow to a subsequent treatment process along with sewage to the maximum extent, and the subsequent cleaning difficulty of the adjusting tank is effectively reduced.
The invention is further configured to: the dewatering device is a stacked screw type dewatering machine, and a sludge storage box is arranged below a sludge outlet of the stacked screw type dewatering machine.
Through adopting above-mentioned technical scheme, fold spiral shell formula hydroextractor and have compact structure, take up an area of the space little, be convenient for maintenance and change, light in weight, be convenient for transport, easy operation and advantage such as with low costs. Set up mud storage tank below the mud outlet of overlapping spiral shell formula hydroextractor, be favorable to storing the mud after the dehydration in unison, be convenient for follow-up mud transportation's process.
In order to solve the technical problem, the invention provides a sewage treatment method, which sequentially comprises the following steps:
the method comprises the following steps: discharging the domestic sewage into a filtering tank, and collecting impurities into a filter screen bag by rotating a filter screen frame provided with the filter screen bag;
step two: the lifting hook hooks the bag ear through rotation, so that the filter screen bag with the collected impurities is hooked away from the filter screen frame;
step three: reinstalling a new filter screen bag;
step four: discharging the filtered sewage into a sedimentation tank after sequentially passing through a regulating tank, an anaerobic tank and an oxidation tank;
step five: adding chemicals into the sedimentation tank to accelerate the sedimentation of the sewage;
step six: supernatant liquor separated out from the sedimentation tank overflows into a clean water tank and is then drained by a drainage channel, and meanwhile, the supernatant liquor can be pumped into a dispensing stirring tank by a water pump;
step seven: the sludge deposited at the bottom of the sedimentation tank is pumped into a dewatering device by a sludge pump for dewatering, and then dry sludge is discharged.
Through adopting above-mentioned technical scheme, set up rotatory screen frame and with the separable filter screen bag of being connected of screen frame, realized the effective collection many times of debris in the sewage to the normal steady operation at sewage treatment station has been guaranteed. The water pump is arranged to pump the supernatant of the sedimentation tank into the dispensing stirring tank, and the supernatant can be used for replacing water to achieve the effect of saving water resources.
In conclusion, the beneficial technical effects of the invention are as follows:
1. through the rotatory screen frame of installation in filtering ponds to place the filter screen bag on the screen frame, collect the filter screen bag through the rotation of screen frame in with debris. When a certain amount of sundries are collected in the filter screen bag, the filter screen bag falls down under the action of gravity along with the rotation of the filter screen frame, so that two sides of the bag opening shrink downwards along the slide rail to form a concave part. The rotary lifting hook hooks the bag ear, so that the filter screen bag collected with sundries is hooked away from the filter screen frame. The device greatly improves the cleaning efficiency of sundries when performing primary filtration on sewage, thereby ensuring the normal and stable operation of the sewage treatment station.
2. The base and the telescopic rod form a blocking relation in the axial direction by arranging the baffle plate and the limiting plate on the base and the telescopic rod respectively, so that the telescopic rod can slide in the base more smoothly, and the possibility that the telescopic rod is separated from the base is reduced.
3. Through set up central draft tube in the sedimentation tank for during the sewage that contains impurity can discharge into the sedimentation tank via central draft tube top-down, be favorable to impurity evenly distributed in the sedimentation tank, then slowly rise along the whole section in pond, the suspended solid impurity everywhere possibility of diffusion in the sewage that has significantly reduced.
Drawings
FIG. 1 is a schematic view showing the overall construction of a sewage treatment system of the present invention.
FIG. 2 is a schematic view showing the internal structure of a filtration tank according to the present invention.
Fig. 3 is a schematic view of a connection structure of the base and the telescopic rod according to the present invention.
FIG. 4 is a schematic view showing the internal structure of the dispensing agitator tank of the present invention.
In the figure, 1, a filtering tank; 11. a first concave arc portion; 111. a first submersible lift pump; 12. a sewage inlet; 13. a fine grid plate; 14. a first rotating shaft; 141. a mounting seat; 15. a slide rail; 151. a first card holder; 152. a second card holder; 16. a filter screen bag; 161. a first mounting post; 162. a second mounting post; 163. a base; 164. a telescopic rod; 165. a spring; 166. a bag ear; 167. a limiting plate; 168. a baffle plate; 17. a mounting frame; 171. a second motor; 172. a second rotating shaft; 173. lifting a hook; 18. a sundry collecting platform;
2. a regulating tank; 21. a low speed submersible mixer; 22. a second submersible lift pump; 23. an anaerobic tank; 231. a centrifugal fan; 24. an oxidation pond; 241. a blower; 242. a third submersible lift pump; 25. a sedimentation tank; 251. a central draft tube; 252. a mud pump; 26. a stacked screw type dehydrator; 261. a sludge storage tank; 27. a dispensing stirring tank; 271. a water pump; 272. a nozzle; 28. a clean water tank; 281. an activated carbon plate; 282. a drainage channel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the sewage treatment system disclosed by the present invention comprises a filtering tank 1 and a regulating tank 2 which are communicated with each other, wherein a sewage inlet 12 is communicated with one side of the filtering tank 1, which is back to the regulating tank 2. In this embodiment, a first concave arc portion 11 is provided in the middle of the bottom of the filtration tank 1. The first submersible lift pump 111 is arranged at one side of the bottom of the filter tank 1 close to the adjusting tank 2, and the first submersible lift pump 111 is communicated into the adjusting tank 2 through a pipeline. A fine grating plate 13 is embedded and separated in the filtering tank 1, and the first submersible lift pump 111 is positioned between the fine grating plate 13 and the adjusting tank 2. A low-speed submersible mixer 21 is installed in the adjusting tank 2.
Referring to fig. 1 and 2, a first rotating shaft 14 is horizontally inserted into the filtering tank 1 and located above the first concave arc portion 11, and a first motor for driving the first rotating shaft 14 is horizontally installed on an outer side wall of the filtering tank 1. The filter screen frames extend outwards in the radial direction on two opposite sides of the outer peripheral surface of the first rotating shaft 14. In this embodiment, the strainer holder includes a mounting seat 141 fixed on the outer peripheral surface of the first rotating shaft 14, and two sliding rails 15 extend outwards from both sides of the mounting seat 141, and the two sliding rails 15 are parallel to each other. The middle part of the slide rail 15 is provided with a second concave arc part, when the opening of the second concave arc part of the slide rail 15 on one side of the first rotating shaft 14 faces downwards, the opening of the second concave arc part of the slide rail 15 on the other side of the first rotating shaft 14 faces upwards, the slide rail 15 with the opening of the second concave arc part facing downwards is close to the water inlet 12, and the slide rail 15 with the opening of the second concave arc part facing upwards is far away from the water inlet. When the slide rail 15 on one side of the first rotating shaft 14 rotates into the range of the first concave arc portion 11 along with the first rotating shaft 14, one side of the slide rail 15 away from the first rotating shaft 14 abuts against the concave arc surface of the first concave arc portion 11.
Referring to fig. 1 and 2, a first clamping seat 151 is disposed at one end of the slide rail 15 close to the mounting seat 141, and a second clamping seat 152 is disposed at the other end of the slide rail 15. The openings of the first clamping seat 151 and the second clamping seat 152 face the middle of the slide rail 15.
Referring to fig. 1 and 2, a strainer bag 16 is mounted on the strainer holder, and an elastic means for keeping the mouth of the strainer bag 16 open is provided at the mouth thereof. In this embodiment, the elastic device includes a first mounting post 161 and a second mounting post 162 respectively mounted on two sides of the bag opening and parallel to each other, wherein the first mounting post 161 is clamped on the first clamping seat 151, and the second mounting post 162 is clamped on the second clamping seat 152. A pocket 166 extends outwardly from each of the first 161 and second 162 mounting posts.
Referring to fig. 2 and 3, a base 163 is fixed on the first mounting column 161, a telescopic rod 164 sliding relative to the base 163 is embedded in the base 163, one end of the telescopic rod 164 extending out of the base 163 is fixed on the second mounting column 162, and the axis of the telescopic rod 164 is perpendicular to the axis of the first mounting column 161. The base 163 is provided with a spring 165 having both ends respectively abutting against the bottom of the base 163 and the extendable rod 164, and the spring 165 and the extendable rod 164 are coaxially provided. In this embodiment, a limiting plate 167 protruding radially toward the inner wall of the base 163 is disposed at one end of the telescopic rod 164 inside the base 163, and a baffle 168 protruding radially toward the outer wall of the telescopic rod 164 is disposed at one end of the base 163 sleeved outside the telescopic rod 164.
Referring to fig. 2 and 3, a mounting frame 17 is erected on the filtering tank 1, and a second rotating shaft 172 is horizontally inserted into the mounting frame 17. A second motor 171 for driving the second rotating shaft 172 is also fixedly mounted on the mounting bracket 17. In the present embodiment, the rotation direction of the second rotating shaft 172 is opposite to the rotation direction of the first rotating shaft 14, and the rotation speed of the second rotating shaft 172 is twice as high as that of the first rotating shaft 14. A lifting hook 173 extends radially outward on the outer circumferential surface of the second rotating shaft 172. A sundries collecting platform 18 is also erected above the filtering tank 1.
Referring to fig. 1, a second submersible lift pump 22 is installed at the bottom of one side of the adjusting tank 2 far away from the filtering tank 1, the second submersible lift pump 22 is communicated with an anaerobic tank 23 through a pipeline, and anaerobic microorganisms are contained in the anaerobic tank 23. In this embodiment, a centrifugal fan 231 is connected to the anaerobic tank 23.
Referring to fig. 1, the anaerobic tank 23 is provided with a communicated oxidation tank 24 at a side far away from the adjusting tank 2, and the oxidation tank 24 contains aerobic microorganisms. In the present embodiment, a blower 241 is provided beside the oxidation pond 24, and the blower 241 is communicated with the bottom of the oxidation pond 24 through a pipeline.
Referring to fig. 1, the bottom of the oxidation pond 24 at the side far away from the anaerobic pond 23 is provided with a third submerged lift pump 242, the third submerged lift pump 242 is communicated with the sedimentation pond 25 through a pipeline, and a central guide cylinder 251 is arranged in the sedimentation pond 25. The bottom of the sedimentation tank 25 is connected with a dewatering device through a mud pump 252. In this embodiment, the dewatering device is a stacked screw type dewatering machine 26, a sludge pump 252 is connected to the bottom of the sedimentation tank 25 and the inlet of the stacked screw type dewatering machine 26 through a pipe, and a sludge storage tank 261 is disposed below the sludge outlet of the stacked screw type dewatering machine 26.
Referring to fig. 1 and 4, a dispensing agitation tank 27 is installed above the sedimentation tank 25. In this embodiment, a water outlet is opened at the top of the sedimentation tank 25, a water inlet is opened at the top of the dispensing stirring tank 27, a water pump 271 is arranged on one side of the sedimentation tank 25, and the water pump 271 is communicated with the water outlet and the water inlet through a pipeline. A nozzle 272 located in the mixing and stirring tank 27 is connected to the water inlet, and an opening of the nozzle 272 is provided toward a side wall of the mixing and stirring tank 27.
Referring to fig. 1, the settling tank 25 is provided with a clean water tank 28 on a side away from the oxidation tank 24. In this embodiment, an overflow port communicating with the clean water tank 28 is provided at the top of the sedimentation tank 25, a plurality of layers of activated carbon plates 281 are horizontally embedded in the clean water tank 28, a drainage channel 282 is communicated with the bottom of the clean water tank 28, and the drainage channel 282 is connected to the river channel.
The sewage treatment method sequentially comprises the following steps:
the method comprises the following steps: domestic sewage is discharged into the filtering tank 1 from the sewage inlet 12, the first motor is started, the first motor drives the first rotating shaft 14 to rotate, and the filtering net rack provided with the filtering net bag 16 collects sundries into the filtering net bag 16 through rotation. When a certain amount of debris is collected in strainer bag 16, strainer bag 16 falls under the action of gravity as the strainer holder rotates and rises. At this time, the first mounting post 161 and the second mounting post 162 approach each other along the concave portion of the slide rail 15, so as to press the telescopic rod 164 to retract into the base 163 and compress the spring 165;
step two: the second motor 171 is started, the second motor 171 drives the second rotating shaft 172 to rotate, when the strainer rack on one side is rotated to be horizontal, the lifting hook 173 is rotated to be in a vertically downward state, at the moment, the lifting hook 173 hooks the bag ear 166 through rotation, and therefore the strainer bag 16 with sundries collected is hooked away from the strainer rack;
step three: an operator standing on the graff collection platform 18 removes and transports the strainer bag 16 from the lifting hook 173;
step four: an operator standing beside the filtering tank 1 mounts a new filter screen bag 16 on the filter screen frame, so that the first mounting column 161 is clamped on the first clamping seat 151, the second mounting column 162 is clamped on the second clamping seat 152, and at the moment, under the elastic action of the spring 165, the telescopic rod 164 extends out of the base 163 and keeps the opening state of the bag mouth;
step five: the filtered sewage is discharged into a sedimentation tank 25 after passing through an adjusting tank 2, an anaerobic tank 23 and an oxidation tank 24 in sequence;
step six: adding the medicine into the sedimentation tank 25 to accelerate the sedimentation of the sewage;
step seven: the supernatant separated out from the sedimentation tank 25 overflows into a clean water tank 28, then is filtered by a multiple activated carbon plate 281 from top to bottom in sequence and then is drained by a drainage channel 282, and meanwhile, the supernatant of the sedimentation tank 25 can be pumped into a dispensing stirring tank 27 through a water pump 271;
step eight: sludge deposited at the bottom of the sedimentation tank 25 is pumped by a sludge pump 252 to the stacked screw type dehydrator 26 for dehydration, and then discharged dry sludge is carried away in a sludge storage tank 261.
This embodiment is through setting up anaerobism pond 23, is favorable to utilizing anaerobe's effect, makes the organic matter take place to hydrolyze, acidize and methanation, removes the organic matter in the sewage to improve the biodegradability of sewage, be favorable to subsequent aerobic treatment. The oxidation pond 24 is arranged to facilitate the biological metabolism of aerobic microorganisms in the presence of oxygen to degrade organic matters. The mixing and stirring tank 27 is arranged on the sedimentation tank 25, and the sludge sedimentation can be accelerated by adding the medicine into the sedimentation tank 25, so that the domestic sewage treatment efficiency can be improved. A rotary filter screen frame is arranged in the filter tank 1, a filter screen bag 16 is arranged on the filter screen frame, and sundries are collected in the filter screen bag 16 through the rotation of the filter screen frame. When a certain amount of sundries are collected in the filter screen bag 16, the filter screen bag 16 descends under the action of gravity along with the rotation and the rising of the filter screen frame, so that two sides of the bag opening are contracted towards the downward concave along the slide rails 15. The bag ears 166 are hooked by the rotating hooks 173, thereby hooking the strainer bag 16, which collects debris, off the strainer tray. The device greatly improves the cleaning efficiency of sundries when performing primary filtration on sewage, thereby ensuring the normal and stable operation of the sewage treatment station.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A sewage treatment system is characterized in that: the device comprises a filtering tank (1), an adjusting tank (2), an anaerobic tank (23), an oxidation tank (24), a sedimentation tank (25) and a clean water tank (28) which are sequentially connected, wherein the clean water tank (28) is communicated with a drainage channel (282), a dispensing stirring tank (27) is arranged on the sedimentation tank (25), and the bottom of the sedimentation tank (25) is connected with a dewatering device through a mud pump (252); a first concave arc part (11) is arranged in the middle of the bottom of the filtering tank (1), a first rotating shaft (14) horizontally penetrates through the filtering tank (1), and a first motor for driving the first rotating shaft (14) is horizontally arranged on the outer side wall of the filtering tank (1); filter screen frames extend outwards in the radial direction on two opposite sides of the outer peripheral surface of the first rotating shaft (14), each filter screen frame comprises a mounting seat (141) fixed on the outer peripheral surface of the first rotating shaft (14), and sliding rails (15) extend outwards on two sides of each mounting seat (141); a second concave arc part is arranged in the middle of the sliding rail (15); when the opening of the second concave arc part of the sliding rail (15) at one side of the first rotating shaft (14) faces downwards, the opening of the second concave arc part of the sliding rail (15) at the other side of the first rotating shaft (14) faces upwards;
a filter screen bag (16) which collects sundries along with the rotation of the filter screen frame is arranged on the filter screen frame, and an elastic device which is abutted against two ends of the slide rail (15) and is used for keeping the opening of the bag mouth is arranged at the bag mouth of the filter screen bag (16);
bag ears (166) extend from the bag mouth of the filter screen bag (16), and a lifting hook (173) for hooking the bag ears (166) is rotatably arranged above the filter tank (1).
2. The wastewater treatment system according to claim 1, wherein: the elastic device comprises a first mounting column (161) and a second mounting column (162) which are respectively mounted on two sides of the bag opening, a base (163) is fixed on the first mounting column (161), an expansion rod (164) which slides relative to the base (163) is embedded in the base (163), one end, extending out of the base (163), of the expansion rod (164) is fixed on the second mounting column (162), and a spring (165) is arranged in the base (163) and two ends of the spring abut against the bottom of the base (163) and the expansion rod (164) respectively.
3. The wastewater treatment system according to claim 2, wherein: one end of the telescopic rod (164) in the base (163) is provided with a limiting plate (167) protruding radially towards the inner wall of the base (163), and one end of the base (163) sleeved outside the telescopic rod (164) is provided with a baffle (168) protruding radially towards the outer wall of the telescopic rod (164).
4. A wastewater treatment system according to claim 3, characterized in that: a first clamping seat (151) used for clamping the first mounting column (161) is arranged at one end of the sliding rail (15), and a second clamping seat (152) used for clamping the second mounting column (162) is arranged at the other end of the sliding rail (15).
5. The wastewater treatment system according to claim 1, wherein: a central guide cylinder (251) is arranged in the sedimentation tank (25).
6. The wastewater treatment system according to claim 5, wherein: a water outlet is formed in the top of the sedimentation tank (25), a water inlet is formed in the top of the dispensing stirring tank (27), a water pump (271) is arranged on one side of the sedimentation tank (25), and the water pump (271) is communicated with the water outlet and the water inlet through a pipeline.
7. The wastewater treatment system according to claim 6, wherein: the water inlet is connected with a nozzle (272) positioned in the dispensing stirring tank (27).
8. The wastewater treatment system according to claim 1, wherein: a low-speed submersible mixer (21) is arranged in the adjusting tank (2).
9. The wastewater treatment system according to claim 8, wherein: the dewatering device is a stacked screw type dewatering machine (26), and a sludge storage box (261) is arranged below a sludge outlet of the stacked screw type dewatering machine (26).
10. A method of treating a wastewater treatment system according to claim 1, comprising the steps of, in order:
the method comprises the following steps: discharging the domestic sewage into a filtering tank (1) to enable a filtering net rack provided with a filtering net bag (16) to collect impurities into the filtering net bag (16) through rotation;
step two: the lifting hook (173) hooks the bag ear (166) through rotation, so that the filter screen bag (16) with sundries collected is hooked away from the filter screen frame;
step three: reinstalling a new filter bag (16);
step four: the filtered sewage is discharged into a sedimentation tank (25) after passing through an adjusting tank (2), an anaerobic tank (23) and an oxidation tank (24) in sequence;
step five: adding drugs into the sedimentation tank (25) to accelerate the sedimentation of the sewage;
step six: supernatant liquor separated out in the sedimentation tank (25) overflows into a clean water tank (28), then is drained away by a drainage channel (282), and meanwhile, the supernatant liquor can be pumped into a dispensing stirring tank (27) by a water pump (271);
step seven: the sludge deposited at the bottom of the sedimentation tank (25) is pumped into a dehydration device by a sludge pump (252) for dehydration, and then dry sludge is discharged.
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| CN201910208461.0A CN109809641B (en) | 2019-03-19 | 2019-03-19 | Sewage treatment system and method |
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| CN201910208461.0A CN109809641B (en) | 2019-03-19 | 2019-03-19 | Sewage treatment system and method |
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| CN109809641B true CN109809641B (en) | 2021-10-01 |
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| CN109806648B (en) * | 2019-03-19 | 2021-09-28 | 广州盈德建筑工程有限公司 | Sewage treatment device |
| CN114570095B (en) * | 2022-03-25 | 2023-12-22 | 山东君德生物科技有限公司 | Filtering equipment for producing water clarifying agent |
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