CN213327181U - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN213327181U CN213327181U CN202021060931.8U CN202021060931U CN213327181U CN 213327181 U CN213327181 U CN 213327181U CN 202021060931 U CN202021060931 U CN 202021060931U CN 213327181 U CN213327181 U CN 213327181U
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Abstract
The embodiment of the utility model discloses sewage treatment system, including biochemical reaction sedimentation tank, magnetic coagulation reaction sedimentation tank and denitrification deep bed filtering pond. This embodiment is through being provided with circulation clarifier and aerator in biochemical reaction sedimentation tank, the aerator provides air-lift power and promotes sewage, wherein the circulation clarifier discharges the supernatant to the magnetic coagulation reaction sedimentation tank in, continue to purify by the magnetic coagulation reaction sedimentation tank, and discharge the supernatant of magnetic coagulation reaction sedimentation tank to the deep bed filtering pond of denitrification by overflow arrangement and purify, through the combination of biochemical reaction sedimentation tank, magnetic coagulation sedimentation tank and deep bed filtering pond of denitrification, biochemical reaction sedimentation tank, magnetic coagulation sedimentation tank and deep bed filtering pond of denitrification adopt the modularized design to take up an area of few, rapid treatment sewage, make system's play water stable and quality of water up to standard.
Description
Technical Field
The embodiment of the utility model provides a relate to sewage treatment technical field, especially a sewage treatment system.
Background
Along with the development of cities, the population is dense, the sewage quantity of the cities is gradually increased, the treatment capacity of the existing sewage treatment plant is insufficient, and the sewage treatment capacity needs to be expanded to improve.
However, the area of the field available for expansion is limited, the field occupied area of the existing sewage treatment process is large, the operation cost is high, the investment and construction period is long, and a sewage treatment system which is rapid, efficient, small in occupied area and stable in effluent is urgently needed at present when land use resources are increasingly short.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an aim at solving one of foretell technical defect at least, disclose a quick high efficiency, take up an area of less and go out stable sewage treatment system of water.
In order to solve the above technical problem, the present invention provides a technical solution that is adopted by the embodiments of the present invention: there is provided a sewage treatment system comprising:
the biochemical reaction sedimentation tank comprises at least one set of circulation clarifier and an aerator, the aerator is arranged at the bottom of the biochemical reaction sedimentation tank, and the circulation clarifier is arranged at the top of the biochemical reaction sedimentation tank and is lower than the designed liquid level of the biochemical reaction sedimentation tank;
the liquid inlet of the magnetic coagulation reaction sedimentation tank is connected with the supernatant liquid outlet of the circulation clarifier, the magnetic coagulation reaction sedimentation tank comprises a reaction stirring device and an overflow device, the reaction stirring device is arranged in the magnetic coagulation reaction sedimentation tank, and the overflow device is arranged at the top of the magnetic coagulation reaction sedimentation tank;
and the liquid inlet of the denitrification deep-bed filter is connected with the overflow liquid outlet of the overflow device, and the denitrification deep-bed filter is used for performing denitrification process treatment on supernatant overflowed by the overflow device and then discharging clear water.
Optionally, the sewage treatment system further comprises:
the device is provided in making a prescription, the device is provided in making a prescription includes the agitator and adds the medicine measuring pump, it includes first medicine mouth and second medicine mouth to add the medicine measuring pump, first medicine mouth is connected to the medicine mouth that advances of magnetic coagulation reaction sedimentation tank, second medicine mouth is connected to the medicine mouth that advances of biochemical reaction sedimentation tank.
Optionally, the sewage treatment system further comprises:
the device comprises a grit chamber, wherein sewage is introduced into a liquid inlet of the grit chamber, a liquid outlet of the grit chamber is connected to a liquid inlet of a biochemical reaction sedimentation tank, and a first grid and a sand-water separator are sequentially arranged from the liquid inlet to the liquid outlet in the grit chamber.
Optionally, the sewage treatment system further comprises:
domestic sewage is introduced into the liquid inlet of the water collecting tank, the liquid outlet of the water collecting tank is connected to the liquid inlet of the grit chamber, the liquid inlet of the water collecting tank is provided with a second grid, and a sewage lifting pump is arranged in the water collecting tank.
Optionally, the sewage treatment system further comprises:
the anaerobism pond, be provided with the dive mixer in the anaerobism pond, the inlet in anaerobism pond is connected to the liquid outlet in grit chamber, the liquid outlet in anaerobism pond is connected to the inlet of biochemical reaction sedimentation tank.
Optionally, the sewage treatment system further comprises:
the oxygen deficiency pond, be provided with the low-speed impeller in the oxygen deficiency pond, the inlet in oxygen deficiency pond is connected to the liquid outlet in anaerobism pond, the liquid outlet in oxygen deficiency pond is connected to the inlet of biochemical reaction sedimentation tank.
Optionally, the magnetic coagulation reaction sedimentation tank further comprises a mud scraper, wherein the mud scraper is arranged at the bottom of the magnetic coagulation reaction sedimentation tank and is used for scraping the sludge mixed liquid at the bottom of the magnetic coagulation reaction sedimentation tank to a mud discharge port.
Optionally, the sewage treatment system further comprises:
the sludge concentration tank is used for receiving sludge mixed liquid discharged from the biochemical reaction sedimentation tank and the magnetic coagulation reaction sedimentation tank and carrying out sludge concentration treatment on the sludge mixed liquid;
the sludge dewatering system, sludge dewatering system's the mud mouth that advances is connected to the mud outlet of sludge thickening pond, sludge dewatering system's the mud mouth that goes out is connected to outside receiving arrangement, sludge dewatering system is used for receiving the exhaust concentrated sludge mixed liquid of sludge thickening pond, and will the concentrated sludge mixed liquid carry out the dehydration to carry to after extremely outside receiving arrangement.
Optionally, the sludge dewatering system includes any one of a belt sludge dewatering machine, a box sludge filter press, a stacked sludge dewatering machine, and a horizontal centrifugal sludge dewatering machine.
Optionally, the sewage treatment system further comprises:
and the flow meter well is communicated with the denitrification deep bed filter and is used for metering the water yield discharged by the denitrification deep bed filter.
The utility model discloses beneficial effect includes: the circulation clarifier and the aerator are arranged in the biochemical reaction sedimentation tank, the aerator provides air lift power to lift sewage, the supernatant is discharged into the magnetic coagulation reaction sedimentation tank by the circulation clarifier, the magnetic coagulation reaction sedimentation tank is used for continuously purifying, the supernatant of the magnetic coagulation reaction sedimentation tank is discharged into the denitrification deep-bed filter tank by the overflow device for purifying, and the biochemical reaction sedimentation tank, the magnetic coagulation sedimentation tank and the denitrification deep-bed filter tank are combined, so that the biochemical reaction sedimentation tank, the magnetic coagulation sedimentation tank and the denitrification deep-bed filter tank adopt modular design, the occupied area is small, the sewage is quickly treated, and the system has stable water outlet and standard water quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic process diagram of an embodiment of the sewage treatment system of the present invention;
fig. 2 is a schematic structural diagram of a loop clarifier according to an embodiment of the present invention.
The reference numbers in the figures illustrate:
1. the system comprises a biochemical reaction sedimentation tank, a magnetic coagulation reaction sedimentation tank, a denitrification deep bed filter tank, a chemical preparation providing device, a sand setting tank, a water collecting tank, a 7 anaerobic tank, a 8 anoxic tank, a 9 sludge concentration tank, a 10 sludge dewatering system, a 11 circulation clarifier, a 12 aerator, a 13 external receiving device, a 14 flowmeter well, a 15 air supply device, a 21 reaction stirring device, a 22 overflow device, a 23 sludge scraper, a 41 chemical preparation stirrer, a 42 chemical dosing metering pump, a 51 first grid, a 52 sand-water separator, a 61 second grid, a 62 sewage lifting pump, a 71 submersible stirrer, a 81 low-speed impeller, a 111 flow guide through hole, a 112 inclined plate, a 113 guide plate, a 114 overflow groove and a 115 drain pipe.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 2, fig. 1 is a schematic process diagram of a sewage treatment system according to an embodiment of the present invention.
As shown in figures 1 to 2, a sewage treatment system comprises a biochemical reaction sedimentation tank 1, a magnetic coagulation reaction sedimentation tank 2 and a denitrification deep bed filter 3.
The biochemical reaction sedimentation tank 1 comprises at least one set of circulation clarifier 11 and aerator 12, the aerator 12 is arranged at the bottom of the biochemical reaction sedimentation tank 1, and the circulation clarifier 11 is arranged at the top of the biochemical reaction sedimentation tank 1 and is lower than the designed liquid level of the biochemical reaction sedimentation tank 1;
the liquid inlet of the magnetic coagulation reaction sedimentation tank 2 is connected with the supernatant liquid outlet of the circulation clarifier 11, the magnetic coagulation reaction sedimentation tank 2 comprises a reaction stirring device 21 and an overflow device 22, the reaction stirring device 21 is arranged in the magnetic coagulation reaction sedimentation tank 2, and the overflow device 22 is arranged at the top of the magnetic coagulation reaction sedimentation tank 2;
and a liquid inlet of the denitrification deep bed filter 3 is connected with an overflow liquid outlet of the overflow device 22, and the denitrification deep bed filter 3 is used for performing denitrification process treatment on supernatant overflowed by the overflow device 22 and then discharging clear water.
When in implementation, a plurality of aerators 12 are arranged at the bottom of the sedimentation tank 1 of the biochemical reaction tank, the aerators 12 provide oxygen into the biochemical reaction sedimentation tank 1 through an external air supply device 15, the aerators 12 have the function of fully mixing sewage and sludge containing microorganisms, and simultaneously provide upward power of a mud-water mixture, so that the sewage forms a circular flow in the biochemical reaction sedimentation tank 1, the organic combination of biochemical and sedimentation processes is realized, the unpowered automatic backflow of the sludge and nitrifying liquid is realized, the water treatment microorganisms are trapped in the tank body, the degradation effect of the microorganisms on pollutants is fully exerted, and the maximization of the treatment efficiency is realized under the condition of limited floor space. Wherein, a part of the sewage flows into the circulation clarifier 11 at the top of the biochemical reaction sedimentation tank 1, as shown in fig. 2, the sewage enters the inside of the circulation clarifier 11 through the flow guiding through hole 111 of the circulation clarifier 11, wherein, the sludge with higher density can be gathered to the guide plate 113 along the inclined plate 112, the guide plate 113 is in an inverted V shape, the sludge can be led into the biochemical reaction sedimentation tank 1 again, and the supernatant in the circulation clarifier 11 can enter the overflow groove 114, and is discharged to the magnetic coagulation reaction sedimentation tank 2 through the drain pipe 115 after being gathered.
The magnetic coagulation reaction sedimentation tank 2 is provided with a reaction stirring device 21, and in some embodiments, the reaction stirring device 21 can uniformly mix the sewage in the magnetic coagulation reaction sedimentation tank 2 with the added medicament so as to improve the sewage treatment efficiency. In some embodiments, this application sewage treatment system still includes the device 4 that provides that dispenses, the device 4 that provides that dispenses includes the agitator 41 that dispenses and adds medicine measuring pump 42, it includes first medicine mouth and second medicine mouth to add medicine measuring pump 42, first medicine mouth is connected to the medicine mouth that advances of magnetic coagulation reaction sedimentation tank 2, the second medicine mouth that goes out is connected to the medicine mouth that advances of biochemical reaction sedimentation tank 1.
The dosage stirrer 41 is used for configuring reagents, for example, a first reagent to be dispensed to the magnetic coagulation reaction sedimentation tank 2 and a second reagent to be dispensed to the living reaction sedimentation tank 1, the first reagent and the second reagent may include chemical phosphorus removal reagents (mainly soluble salts such as iron-based salts and aluminum-based salts), organic carbon sources (glucose, methanol, starch, and the like), sludge modifiers (insoluble substances such as powdered activated carbon, diatomaceous earth, sand, and the like), and the dosage pump 42 is used for pumping the reagents to the corresponding reaction tanks and calculating the dosage of the dispensed reagents, so as to achieve the optimal efficiency of sewage purification while avoiding the waste of the reagents.
The denitrification deep bed filter 3 is connected with the supernatant of the magnetic coagulation reaction sedimentation tank 2, the denitrification deep bed filter 3 is a treatment unit integrating biological denitrification and filtering functions, and the effluent of the magnetic coagulation reaction sedimentation tank 2 enters the denitrification deep bed filter 3 for biological denitrification and filtration and then is discharged as clean water. In some optional embodiments, the wastewater treatment system further comprises:
and the flow meter well 14 is communicated with the denitrification deep-bed filter 3, and the flow meter well 14 is used for metering the water yield discharged by the denitrification deep-bed filter 3.
In the embodiment, the circulation clarifier 11 and the aerator 12 are arranged in the biochemical reaction sedimentation tank 1, the aerator 12 provides air lift power to lift sewage, the circulation clarifier 11 discharges supernatant into the magnetic coagulation reaction sedimentation tank 2, the magnetic coagulation reaction sedimentation tank 2 continues purification, the overflow device 22 discharges the supernatant of the magnetic coagulation reaction sedimentation tank 2 to the denitrification deep bed filter 3 for purification, and through the combination of the biochemical reaction sedimentation tank 1, the magnetic coagulation sedimentation tank 2 and the denitrification deep bed filter 3, the sewage treatment process can be rapidly and stably realized through modular and standardized equipment, so that the final effluent reaches the surface water environment quality standard IV, and the system has the advantages of small floor area, short construction period, high system starting speed and simple operation management.
In some optional embodiments, the wastewater treatment system further comprises:
the device comprises a grit chamber 5, sewage is introduced into a liquid inlet of the grit chamber 5, a liquid outlet of the grit chamber 5 is connected to a liquid inlet of a biochemical reaction sedimentation tank 1, and a first grid 51 and a sand-water separator 52 are sequentially arranged from the liquid inlet to the liquid outlet in the grit chamber 5.
When implementing, sewage can be inevitable mix into silt and sand in the process of assembling, if the sand in the sewage is not subsided and separated and is got rid of, then can influence the operation of follow-up treatment facility, for example: wear the mechanical pump and block the pipe network. Through setting up grit chamber 5 before biochemical reaction sedimentation tank 1, in will needing purification treatment's sewage introduces grit chamber 5 earlier, utilize first grid 51 and sand water separator 52 to get rid of the particulate matter in the sewage, will get rid of the sewage after the particulate matter and introduce to biochemical reaction sedimentation tank 1 again to avoid the particulate matter in the sewage to biochemical reaction sedimentation tank 1 and each subsequent reaction tank cause the damage.
In some embodiments, the grit chamber 1 employs any one of an advection grit chamber, an aeration grit chamber, a cyclone grit chamber, and the like. Taking the 1-position horizontal flow grit chamber of the grit chamber as an example, the grit chamber 1 can be provided with no first grating 51 and no sand-water separator 52, and sand is settled in the grit chamber 5 by utilizing the characteristic that the density of sand is greater than that of water, and the sewage on the upper layer is conveyed to the biochemical reaction sedimentation tank 1, so that the functions of protecting pipelines, valves and other facilities from abrasion and blockage are realized.
In an optional embodiment, the wastewater treatment system further comprises:
the catch basin 6, domestic sewage is introduced to the inlet of catch basin 6, the liquid outlet of catch basin 6 is connected to the inlet of grit chamber 5, the inlet of catch basin 6 is provided with second grid 61, be provided with sewage elevator pump 62 in the catch basin 6.
When implementing, second grid 61 is thick grid, first grid 51 is thin grid, wherein, the great particulate matter of particle diameter in the sewage can be filtered to thick grid, and thin grid can filter the tiny particle impurity, through set up the big particle impurity in the sewage of second grid 61 filtration earlier in water catch bowl 6, when the water level in water catch bowl 6 reaches preset water level, elevator pump 62 starts thereby promote the sewage that filters through second grid 61 to in grit chamber 5, carry out tiny particle impurity by first grid 51 in grit chamber 5 to sewage and filter, and discharge sewage to biochemical reaction sedimentation tank 1 behind the further granule impurity that removes in the sewage through sand-water separator 52, further improve the efficiency of getting rid of granule impurity in the sewage.
In some optional embodiments, the wastewater treatment system further comprises:
the anaerobic tank 7, be provided with dive mixer 71 in the anaerobic tank 7, the inlet of anaerobic tank 7 is connected to the liquid outlet of grit chamber 5, the liquid outlet of anaerobic tank 7 is connected to the inlet of biochemical reaction sedimentation tank 1.
When implementing, anaerobism pond 7 is used for right 5 exhaust sewage in grit chamber carry out anaerobic treatment, and anaerobism pond 7 is the effect that utilizes anaerobe, makes the organic matter take place to hydrolyze, acidize and methanation, gets rid of the organic matter in the waste water to improve the biodegradability of sewage, be favorable to subsequent sewage purification, wherein, the anaerobism degradation process of polymer organic matter can be divided into four stages: hydrolysis stage, fermentation (or acidification) stage, acetogenesis stage and methanogenesis stage. In some embodiments, the wastewater treatment system further comprises:
the anaerobic tank 8, be provided with low-speed impeller 81 in the anaerobic tank 8, the inlet of anaerobic tank 8 is connected to the liquid outlet of anaerobic tank 7, the liquid outlet of anaerobic tank 8 is connected to the inlet of biochemical reaction sedimentation tank 1.
The anoxic tank 8 is a reaction tank which does not contain dissolved oxygen but contains nitrate, the anoxic tank 8 has the function of improving biochemical property through hydrolysis reaction, and in the denitrification process, the anoxic tank mainly plays a role in removing nitrate nitrogen through denitrification, and simultaneously removes part of BOD (biological oxygen demand), so that the anoxic tank can effectively promote biochemical reaction in the biochemical reaction sedimentation tank 1, and the sewage treatment efficiency is improved.
In some optional embodiments, the magnetic coagulation reaction sedimentation tank 2 further includes a mud scraper 23, and the mud scraper 23 is disposed at the bottom of the magnetic coagulation reaction sedimentation tank 2 and is configured to scrape the sludge mixed liquor at the bottom of the magnetic coagulation reaction sedimentation tank 2 to a mud discharge port.
When implementing, magnetism coagulation reaction sedimentation tank 2 can deposit mud at the in-process that purifies sewage, through set up mud scraper 23 in magnetism coagulation reaction sedimentation tank 2, is discharged from the mud discharging port by mud scraper 23 with the mud mixed liquid that deposits, prevents that mud from piling up in magnetism coagulation reaction sedimentation tank 2 and influencing sewage treatment efficiency.
In some optional embodiments, the wastewater treatment system further comprises:
a sludge concentration tank 9, wherein a sludge inlet of the sludge concentration tank 9 is connected to a sludge outlet of the biochemical reaction sedimentation tank 1, a sludge inlet of the sludge concentration tank 9 is also connected to a sludge outlet of the magnetic coagulation reaction sedimentation tank 2, and the sludge concentration tank 9 is used for receiving sludge mixed liquid discharged from the biochemical reaction sedimentation tank 1 and the magnetic coagulation reaction sedimentation tank 2 and carrying out sludge concentration treatment on the sludge mixed liquid;
the sludge dewatering system 10, the mud inlet of sludge dewatering system 10 is connected to the mud outlet of sludge thickening pond 9, the mud outlet of sludge dewatering system 10 is connected to outside receiving arrangement 13, sludge dewatering system 10 is used for receiving the concentrated sludge mixed liquid of sludge thickening pond 9 exhaust, and will the concentrated sludge mixed liquid carry out the dehydration to carry to outside receiving arrangement 13 after the dehydration.
During implementation, the sludge concentration tank 9 is communicated with the biochemical reaction sedimentation tank 1 and the magnetic coagulation reaction sedimentation tank 2, the biochemical reaction sedimentation tank 1 sediments sludge in the sewage treatment process, and the sludge concentration tank 9 is used for receiving the sludge discharged from the biochemical reaction sedimentation tank 1 and the magnetic coagulation reaction sedimentation tank 2 and performing sludge concentration treatment. In some embodiments, the sludge concentration tank 9 is used for sludge concentration, and includes a vertical flow type or radial flow type shape, the excess sludge in the biochemical reaction sedimentation tank 1 and the sludge generated by the magnetic coagulation reaction sedimentation tank 2 are discharged into the sludge concentration tank 9, and the sludge concentration tank 9 periodically lifts the sludge to the sludge dewatering system 10 for dewatering.
In some embodiments, the sludge dewatering system 10 includes any one of a belt sludge dewatering machine, a box sludge filter press, a stacked sludge dewatering machine, and a horizontal centrifugal sludge dewatering machine. The sludge is dewatered by the sludge dewatering system 10, and the dewatered sludge is sent to the external receiving device 13, and the temporarily stored dewatered sludge is periodically sent to an external disposal facility, for example, the external receiving device 13 is a sludge storage bin.
It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A wastewater treatment system, comprising:
the biochemical reaction sedimentation tank (1) comprises at least one set of circulation clarifier (11) and aerator (12), the aerator (12) is arranged at the bottom of the biochemical reaction sedimentation tank (1), and the circulation clarifier (11) is arranged at the top of the biochemical reaction sedimentation tank (1) and is lower than the designed liquid level of the biochemical reaction sedimentation tank (1);
the magnetic coagulation reaction sedimentation tank (2) is characterized in that a liquid inlet of the magnetic coagulation reaction sedimentation tank (2) is connected with a supernatant liquid outlet of the circulation clarifier (11), the magnetic coagulation reaction sedimentation tank (2) comprises a reaction stirring device (21) and an overflow device (22), the reaction stirring device (21) is arranged in the magnetic coagulation reaction sedimentation tank (2), and the overflow device (22) is arranged at the top of the magnetic coagulation reaction sedimentation tank (2);
the denitrification deep-bed filter (3) is characterized in that a liquid inlet of the denitrification deep-bed filter (3) is connected with an overflow liquid outlet of the overflow device (22), and the denitrification deep-bed filter (3) is used for discharging clear water after supernatant overflowed by the overflow device (22) is subjected to denitrification process treatment.
2. The wastewater treatment system according to claim 1, wherein: the sewage treatment system further comprises:
the device (4) is provided in dispensing, the device (4) is provided in dispensing is including agitator (41) and add medicine measuring pump (42), it includes first medicine mouth and second medicine mouth to add medicine measuring pump (42), first medicine mouth is connected to the medicine mouth that advances of magnetic coagulation reaction sedimentation tank (2), second medicine mouth is connected to the medicine mouth that advances of biochemical reaction sedimentation tank (1).
3. The wastewater treatment system according to claim 1, wherein: the sewage treatment system further comprises:
the device comprises a grit chamber (5), wherein sewage is introduced into a liquid inlet of the grit chamber (5), a liquid outlet of the grit chamber (5) is connected to a liquid inlet of a biochemical reaction sedimentation tank (1), and a first grid (51) and a sand-water separator (52) are sequentially arranged from the liquid inlet to the liquid outlet in the grit chamber (5).
4. The wastewater treatment system according to claim 3, wherein: the sewage treatment system further comprises:
domestic sewage is introduced into a liquid inlet of the water collecting tank (6), a liquid outlet of the water collecting tank (6) is connected to a liquid inlet of the grit chamber (5), a second grid (61) is arranged on the liquid inlet of the water collecting tank (6), and a sewage lifting pump (62) is arranged in the water collecting tank (6).
5. The wastewater treatment system according to claim 3, wherein: the sewage treatment system further comprises:
the anaerobic tank (7), be provided with dive mixer (71) in anaerobic tank (7), the inlet of anaerobic tank (7) is connected to the liquid outlet of grit chamber (5), the liquid outlet of anaerobic tank (7) is connected to the inlet of biochemical reaction sedimentation tank (1).
6. The wastewater treatment system according to claim 5, wherein: the sewage treatment system further comprises:
the anaerobic tank comprises an anaerobic tank (8), wherein a low-speed impeller (81) is arranged in the anaerobic tank (8), a liquid inlet of the anaerobic tank (8) is connected to a liquid outlet of the anaerobic tank (7), and a liquid outlet of the anaerobic tank (8) is connected to a liquid inlet of the biochemical reaction sedimentation tank (1).
7. The wastewater treatment system according to claim 1, wherein: the magnetic coagulation reaction sedimentation tank (2) further comprises a mud scraper (23), wherein the mud scraper (23) is arranged at the bottom of the magnetic coagulation reaction sedimentation tank (2) and is used for scraping the sludge mixed liquid at the bottom of the magnetic coagulation reaction sedimentation tank (2) to a mud discharge port.
8. The wastewater treatment system according to claim 7, wherein: the sewage treatment system further comprises:
the sludge concentration tank (9), the sludge inlet of the sludge concentration tank (9) is connected to the sludge water outlet of the biochemical reaction sedimentation tank (1), the sludge inlet of the sludge concentration tank (9) is also connected to the sludge outlet of the magnetic coagulation reaction sedimentation tank (2), and the sludge concentration tank (9) is used for receiving the sludge mixed liquid discharged from the biochemical reaction sedimentation tank (1) and the magnetic coagulation reaction sedimentation tank (2) and carrying out sludge concentration treatment on the sludge mixed liquid;
the sludge dewatering system (10), the mud inlet of sludge dewatering system (10) is connected to the mud outlet of sludge thickening pond (9), the mud outlet of sludge dewatering system (10) is connected to outside receiving arrangement (13), sludge dewatering system (10) are used for receiving the concentrated sludge mixed liquid of sludge thickening pond (9) exhaust, and will the concentrated sludge mixed liquid carry out the dehydration after-treatment to carry to outside receiving arrangement (13).
9. The wastewater treatment system according to claim 8, wherein: the sludge dewatering system (10) comprises any one of a belt type sludge dewatering machine, a box type sludge filter press, a stacked spiral sludge dewatering machine and a horizontal centrifugal sludge dewatering machine.
10. The wastewater treatment system according to claim 1, wherein: the sewage treatment system further comprises:
the flow meter well (14), the flow meter well (14) with the deep bed filter of denitrification (3) intercommunication, flow meter well (14) are used for measuring the water yield that deep bed filter of denitrification (3) discharged.
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| CN116002917A (en) * | 2023-01-06 | 2023-04-25 | 中国石油化工股份有限公司 | Salt-containing wastewater treatment system and method |
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