CN213865536U - Sewage phosphorus removal device and multistage sewage treatment device - Google Patents
Sewage phosphorus removal device and multistage sewage treatment device Download PDFInfo
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- CN213865536U CN213865536U CN202022429471.8U CN202022429471U CN213865536U CN 213865536 U CN213865536 U CN 213865536U CN 202022429471 U CN202022429471 U CN 202022429471U CN 213865536 U CN213865536 U CN 213865536U
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Abstract
The disclosure relates to the technical field of sewage treatment, in particular to a sewage dephosphorization device and a multistage sewage treatment device. The sewage phosphorus removal device that this disclosure provided includes: the device comprises a phosphorus removal tank, an anode part, a cathode part and a power supply; the anode part is arranged in the phosphorus removal tank and is connected with a power supply; the cathode component is arranged in the phosphorus removal tank and is connected with the power supply; the anode component is provided with a channel penetrating through two ends, one end of the channel is used for being communicated with the connecting pipe, the other end of the channel is close to the bottom wall of the phosphorus removal pool, a blade component is arranged in the channel, and the blade component is used for changing the flowing direction of water. The multistage sewage treatment plant that this disclosure provided includes: the preliminary sedimentation tank, the anaerobic tank, the anoxic tank and the aerobic tank which are sequentially communicated and the sewage dephosphorization device can effectively remove organic pollutants and total nitrogen in sewage, and meanwhile, phosphorus elements which can not reach the discharge standard in the biological treatment process can be further removed through the sewage dephosphorization device.
Description
Technical Field
The disclosure relates to the technical field of sewage treatment, in particular to a sewage dephosphorization device and a multistage sewage treatment device.
Background
Along with the development of world economy and the enhancement of environmental protection consciousness of people, countries in the world have made higher requirements on the discharge standard of sewage, and the removal of nitrogen and phosphorus in the sewage can not be guaranteed to reach the standard through the conventional sewage treatment technology, so that the sewage treatment plant pays more and more attention to the nitrogen and phosphorus removal technology of the treated discharged sewage. As is known, the over-standard content of nitrogen and phosphorus in the water body is the main cause of water body eutrophication, not only causes a large amount of economic loss, but also causes environment damage which is difficult to estimate, a large amount of fishes die, and the water body smells and can be recovered or even not recovered in a long time. Along with the enlargement of urban scale, the discharge amount of urban sewage is increased year by year, and the existing sewage treatment system must be modified to meet the requirements of denitrification and dephosphorization.
With the continuous and deep promotion of domestic sewage treatment work, various sewage treatment technologies and equipment have stable removal effects on pollutants such as COD (chemical oxygen demand), ammonia nitrogen and the like in the domestic sewage, but have unsatisfactory removal effects on total phosphorus.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the present disclosure provides a sewage phosphorous removal device and a multi-stage sewage treatment device.
The first aspect of the present disclosure provides a sewage dephosphorization apparatus, including:
a phosphorus removal tank;
the anode part is arranged in the phosphorus removal tank and is connected with a power supply;
the cathode component is arranged in the phosphorus removal tank and is connected with the power supply;
the anode component is provided with a channel penetrating through two ends, one end of the channel is used for being communicated with the connecting pipe, the other end of the channel is close to the bottom wall of the phosphorus removal pool, a blade component is arranged in the channel, and the blade component is used for changing the flowing direction of water.
Further, the vane assembly comprises at least one first guide vane and at least one second guide vane;
the first guide vane comprises a first spiral structure, the second guide vane comprises a second spiral structure, and the spiral directions of the first spiral structure and the second spiral structure are opposite.
Furthermore, the number of the anode parts is multiple, the anode parts are uniformly arranged in the phosphorus removal tank, and the anode parts are respectively communicated with the connecting pipe;
the cathode components are arranged in a plurality of numbers, and the cathode components are uniformly arranged in the phosphorus removal tank.
Further, a first sludge collecting component is arranged at the bottom of the phosphorus removal tank, the first sludge collecting component comprises a first inclined plate and a first sludge discharge pump, and the first inclined plate extends from the bottom wall of the phosphorus removal tank to the side wall of the phosphorus removal tank in an inclined manner;
the first sludge discharge pump is arranged at the bottom of the dephosphorization pool and is used for discharging sludge out of the dephosphorization pool.
The present disclosure provides in a second aspect a multistage sewage treatment plant comprising: the primary sedimentation tank, the anaerobic tank, the anoxic tank, the aerobic tank and the sewage dephosphorization device are sequentially communicated.
Further, a second sludge collecting component is arranged in the primary sedimentation tank, and the second sludge collecting component and the bottom of the primary sedimentation tank form a space for collecting the settled sludge, so that the settled sludge is hydrolyzed and acidified in the space;
the second sludge collecting component comprises a second inclined plate and a second sludge discharge pump, and the second inclined plate extends from the bottom wall of the primary sedimentation tank to the side wall of the primary sedimentation tank in an inclined manner;
the second sludge discharge pump is arranged at the bottom of the primary sedimentation tank and is used for conveying products of hydrolytic acidification to the anaerobic tank and/or the anoxic tank.
Further, the multi-stage sewage treatment device also comprises an aerobic tank, and the aerobic tank is communicated with the anoxic tank;
the aerobic tank is internally provided with a first partition board, the first partition board and the bottom of the aerobic tank are provided with a first gap, the first partition board divides the aerobic tank into an aerobic zone and a settling zone, the aerobic zone is provided with a plurality of aeration components for providing oxygen for the aerobic zone, and the settling zone is used for settling sludge in water in the aerobic zone.
Furthermore, a slope plate is arranged in the aerobic tank, and the slope plate extends from the bottom of the aerobic tank to the side wall of the aerobic tank in an inclined mode.
Further, the multistage sewage treatment device further comprises a secondary sedimentation tank, the secondary sedimentation tank comprises an inclined sedimentation tank, the inclined sedimentation tank is communicated with the aerobic tank, and an inclined sedimentation plate is arranged at the bottom of the inclined sedimentation tank.
Further, the secondary sedimentation tank comprises a filtering tank, and the filtering tank is communicated with the inclined sedimentation tank;
the filter tank is internally provided with a second partition plate, a second gap is formed between the second partition plate and the bottom of the filter tank, the second partition plate divides the filter tank into a filtering area and a sterilizing area, biological fillers are arranged in the filtering area, and an ultraviolet generator is arranged in the sterilizing area.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the sewage dephosphorization device comprises: a phosphorus removal tank, an anode part, a cathode part and a power supply. The anode part is arranged in the phosphorus removal tank and is connected with the power supply, and the cathode part is arranged in the phosphorus removal tank and is connected with the power supply. The positive pole part is equipped with the passageway that link up both ends, and the one end of passageway is used for and connects the pipe intercommunication, and the other end is close to the diapire setting in dephosphorization pond, is equipped with the blade subassembly in the passageway, and the blade subassembly is used for changing the flow direction of water, through the flow mixed direction who constantly changes water, forms good mixed effect to intaking, improves the dephosphorization effect. The anode part in the sewage dephosphorization device is different from the conventional anode part, has double functions of fully mixing water inlet and electrolyzing, ensures that the phosphorus element in the sewage can be discharged up to the standard in the process of effectively removing organic pollutants and total nitrogen in the sewage, overcomes various defects in the dephosphorization process by a biological method and a chemical method, and has higher economical efficiency, practicability and safety.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a multi-stage sewage treatment plant according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of an anode part in the multi-stage sewage treatment device according to the embodiment of the disclosure;
fig. 3 is a schematic structural diagram of irregular parts in a vane assembly in a multi-stage sewage treatment device according to an embodiment of the disclosure.
Reference numerals: 1-primary settling tank; 11-a water inlet pipe; 12-a second sludge-collecting member; 13-a second dredge pump; 14-a connecting tube; 2-an anaerobic tank; 21-a filler; 3-an anoxic tank; 4-an aerobic tank; 41-an aerobic zone; 42-a precipitation zone; 43-a first separator; 44-ramp plate; 5-a phosphorus removal tank; 51-an anode part; 52-a cathode member; 53-first dredge pump; 54-a mud pipe; 511-connecting flange; 512-tube wall; 513-first guide vanes; 514-second guide vane; 515-irregular parts; 6-secondary sedimentation tank; 61-a deflection zone; 62-a filtration zone; 63-a sterile field; 7-power supply.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
As shown in fig. 1, the multistage sewage treatment apparatus provided by the embodiment of the present disclosure includes: the primary sedimentation tank 1, the anaerobic tank 2, the anoxic tank 3, the aerobic tank 4 and the sewage dephosphorization device are sequentially communicated. After the sewage is treated by anaerobic, anoxic and aerobic reactions, organic pollutants and total nitrogen in the sewage can be discharged up to the standard, part of total phosphorus in the sewage can be removed, the water after the aerobic treatment enters the sewage dephosphorization device to further remove the total phosphorus in the sewage, so that the organic pollutants and the total nitrogen in the sewage can be effectively removed, and meanwhile, phosphorus elements which cannot be discharged up to the standard in the biological treatment process can be further removed by the sewage dephosphorization device.
The sewage dephosphorization device provided by the embodiment of the disclosure adopts electric dephosphorization, the anode part 51 and the cathode part 52 are electrified to generate iron ions in the sewage and generate precipitates with phosphate radicals in the sewage to filter phosphorus elements in the sewage, the phosphorus in the sewage can be effectively removed, and the existing chemical dosing dephosphorization device is replaced.
The sewage dephosphorization device comprises: a phosphorus removal tank 5, an anode part 51, a cathode part 52 and a power supply 7. The anode part 51 is arranged in the phosphorus removal tank 5 and connected with the power supply 7, and the cathode part 52 is arranged in the phosphorus removal tank 5 and connected with the power supply 7. As shown in fig. 2, the anode member 51 is provided with a channel penetrating through both ends, one end of the channel is used for communicating with the connecting pipe 14, the other end is close to the bottom wall of the phosphorus removal pool 5, a blade assembly is arranged in the channel, the blade assembly is used for changing the flow direction of water, and through continuously changing the flow mixing direction of water, a good mixing effect is formed on the inflow water, so that the phosphorus removal effect is improved.
The anode member 51 is connected to the connecting pipe 14 through a connecting flange 511, the anode member 51 may be a pipe member including a pipe wall 512 and a passage disposed in the pipe wall 512, and may allow water to flow from the top to the bottom of the anode member 51, and preferably, the anode member 51 may be a hollow pipe having a cylindrical shape. The anode member 51 may be made of iron or aluminum. The cathode member 52 may be a plate, and optionally, the cathode member 52 may be made of stainless steel, activated carbon, graphite, or titanium. The anode parts 51 and the cathode parts 52 may be provided in one set or in two or more sets.
The sewage reacts in the sewage dephosphorization device as follows: the sewage from the aerobic zone 41 firstly enters the anode part 51, flows out from the bottom of the anode part 51 and enters the electric phosphorus removal tank 5, the electrolysis reaction can be carried out when the anode part 51 is electrified in the process of flowing from top to bottom, iron ions are generated by electrolysis, the sewage can be fully mixed, and after the water flows out from the bottom of the anode part 51, the electrolysis reaction can be further carried out outside the anode part 51, so that phosphorus elements in the sewage can be removed. Under the drive of current, the following reactions occur on the polar plate:
anode: fe-2e-＝Fe2+，
Cathode: 2H++2e-＝H2，
Reaction with phosphate in wastewater:
4Fe2++H2O+O2＝4Fe3++4OH-
Fe3++PO4 3-＝FePO4↓
3Fe2++2PO4 3-＝Fe3(PO4)2↓
studies have shown that pH in wastewater affects the predominant form of phosphorus present, and that phosphate exists in wastewater in the following equilibrium:
phosphorus-containing sediment and residual sludge generated by the electrolysis reaction enter the bottom of the dephosphorization pool 5.
In some embodiments, the blade assembly includes at least one first guide vane 513 and at least one second guide vane 514, the first guide vane 513 and the second guide vane 514 are respectively provided with a plurality of grooves, and the side edges of the first guide vane 513 and the second guide vane 514 are arc-shaped. Preferably, the first guide vane 513 includes a first spiral structure, the second guide vane 514 includes a second spiral structure, and the spiral directions of the first spiral structure and the second spiral structure are opposite, so that water is turned left and right after entering from the top of the anode part 51, and the flowing mixing direction of water is continuously changed by the first guide vane 513 and the second guide vane 514, thereby forming a good mixing effect on water inflow and improving the dephosphorization effect.
As shown in fig. 3, the blade assembly further includes an irregular part 515 for changing the flow mixing direction of water, so as to form a good mixing effect on the inflow water and improve the phosphorus removal effect.
The electric phosphorus removal system is arranged at the tail end of the conventional sewage biological treatment, the anode part 51 in the sewage phosphorus removal device is different from the conventional anode part 51, the double functions of fully mixing water inflow and electrolysis can be realized, the phosphorus element in the sewage can be discharged up to the standard in the process of ensuring the effective removal of organic pollutants and total nitrogen in the sewage, various defects in the phosphorus removal process of a biological method and a chemical method are overcome, and the economy, the practicability and the safety are higher.
In some embodiments, the anode members 51 are provided in a plurality, the plurality of anode members 51 are uniformly arranged in the phosphorus removal tank 5, the plurality of anode members 51 are respectively communicated with the connecting pipe 14, the plurality of cathode members 52 are provided in a plurality, and the plurality of cathode members 52 are uniformly arranged in the phosphorus removal tank 5. The anode member 51 and the cathode member 52 are disposed at intervals.
In some embodiments, the bottom of the phosphorus removal tank 5 is provided with a first sludge collecting component, the first sludge collecting component includes a first inclined plate and a first sludge pump 53, the first inclined plate extends obliquely from the bottom wall of the phosphorus removal tank 5 to the side wall of the phosphorus removal tank 5, the first sludge pump 53 is arranged at the bottom of the phosphorus removal tank 5, and the first sludge pump 53 is used for discharging sludge out of the phosphorus removal tank 5. The embodiment is provided with a sewage dephosphorization device at the rear end of the aerobic tank 4, phosphorus-containing sediments generated by electrolytic reaction and excess sludge enter the first sludge collecting component at the bottom of the dephosphorization tank 5 and are collected by the first sludge discharge pump 53, so that the treatment efficiency can be improved, and the sewage treatment effect can be improved.
In some embodiments, a second sludge collecting component 12 is disposed inside the primary sedimentation tank 1, the second sludge collecting component 12 and the bottom of the primary sedimentation tank 1 form a space for collecting the settled sludge, and make the settled sludge hydrolyzed and acidified in the space, the second sludge collecting component 12 includes a second inclined plate and a second sludge discharge pump 13, the second inclined plate extends obliquely from the bottom wall of the primary sedimentation tank 1 to the side wall of the primary sedimentation tank 1, the second sludge discharge pump 13 is disposed at the bottom of the primary sedimentation tank 1, and the second sludge discharge pump 13 is used for conveying products of hydrolysis and acidification to the anaerobic tank 2 and/or the anoxic tank 3.
Be provided with the filler frame in the anaerobism pond 2, evenly be provided with filler 21 on the filler frame, filler 21 can provide bigger biological contact area for sewage denitrogenation effect is better. Sewage flows into the tank from the upper part of the front wall of the primary sedimentation tank 1, sludge is precipitated in the process that the sewage flows into the anaerobic tank 2, and the sludge is concentrated to the sludge collecting area of the primary sedimentation tank 1. Preferably, the lower part of the primary sedimentation tank 1 may be formed in an inverted cone shape, and the second sludge collecting member 12 may be a sludge scraper, so that sludge is collected to the lower part of the primary sedimentation tank 1 as much as possible, and thus the sludge is hydrolyzed and acidified at the lower part of the primary sedimentation tank 1, and the resultant is transferred to the anaerobic tank 2 and/or the anoxic tank 3 by the second sludge discharge pump 13, which provides a stable carbon source for the anaerobic tank 2/the anoxic tank 3.
Be provided with at the front end of anaerobism pond 2 and just sink pond 1, the lower part of just sinking pond 1 is collected mud, mud directly stops the lower part hydrolytic acidification who just sinks pond 1, hydrolyze the insoluble organic matter into soluble substance, turn into macromolecule, the material that is difficult to biodegradable into easily biodegradable's material, after a certain time with just sinking the partial hydrolysis acidification product of pond 1 lower part and carry to anaerobism pond 2/oxygen deficiency pond 3 through second sludge discharge pump 13, supplement the carbon source to it, satisfy denitrification fungus and phosphorus accumulating fungus's carbon source demand.
In some embodiments, the multi-stage sewage treatment apparatus further comprises an aerobic tank 4, the aerobic tank 4 is communicated with the anoxic tank 3, a first partition plate 43 is disposed inside the aerobic tank 4, the first partition plate 43 has a first gap with the bottom of the aerobic tank 4, the first partition plate 43 divides the aerobic tank 4 into an aerobic zone 41 and a settling zone 42, the aerobic zone 41 is provided with a plurality of aeration components for providing oxygen to the aerobic zone 41, and the settling zone 42 is used for settling sludge in water in the aerobic zone 41.
The sewage after primary sedimentation in the primary sedimentation tank 1 sequentially passes through the anaerobic tank 2 and the anoxic tank 3 to undergo anaerobic reaction and anoxic reaction, then enters the aerobic tank 4, the sewage enters the aerobic zone 41 to undergo aerobic reaction to decompose sludge, then the sewage enters the sedimentation zone 42 to undergo sedimentation in the flow process from bottom to top, so that a part of the sludge can be intercepted and continuously remained in the aerobic tank 4, the aerobic microorganisms can continuously decompose organic matters in the sewage, an aeration device is not arranged in the sedimentation zone 42, the dissolved oxygen concentration in the sedimentation zone 42 is gradually reduced to form a micro-anoxic state, denitrification reaction denitrification is performed to remove nitrogen, and then the sewage with reduced sludge content enters the sewage dephosphorization device.
The aerobic tanks 4 can be arranged in plurality, the aerobic tanks 4 are connected in sequence, sewage enters the aerobic zone 41 to be subjected to aerobic reaction to decompose sludge, then sewage enters the sedimentation zone 42 to flow from bottom to top, partial sludge can be settled, so that part of the sludge can be intercepted and continuously remained in the aerobic tank 4 to ensure that the aerobic microorganisms continuously decompose organic matters in the sewage, an aeration device is not arranged in the sedimentation zone 42, the dissolved oxygen concentration in the sedimentation zone 42 is gradually reduced to form a micro-anoxic state, denitrification reaction is carried out to remove nitrogen, then the sewage with reduced sludge content enters the next aerobic tank 4, part of the sludge is intercepted, the arrangement of the aerobic tanks 4 is used for treating the sewage step by step, the sewage can also be subjected to certain denitrification action in the sedimentation zone 42 except the aerobic reaction in the aerobic zone 41 in the process, and thus the utility model can carry out effective sewage treatment, the sludge amount in the aerobic tank 4 is ensured, and the subsequent sludge treatment load is prevented from being increased due to excessive discharged sludge.
In some embodiments, an oxygen dissolving instrument for detecting the dissolved oxygen concentration of the sewage is further arranged in the aerobic tank 4, the oxygen dissolving instrument is connected with an aeration controller, the aeration controller is used for receiving the dissolved oxygen concentration detected by the oxygen dissolving instrument, the aerobic tank further comprises an aeration fan for supplying air to the aeration device, and the aeration controller is electrically connected with the aeration fan. In order to reduce energy consumption, the aeration device is correspondingly and intermittently started, the starting and stopping conditions of the aeration device are that whether the dissolved oxygen concentration of each aerobic pool 4 is lower than an upper limit threshold or reaches the upper limit threshold, the dissolved oxygen concentration of the aerobic pools 4 is monitored in real time through an dissolved oxygen meter, and the dissolved oxygen concentration is judged through an aeration controller to send out a control signal to control the start and stop of an aeration fan, so that each aerobic pool 4 is ensured to have a certain dissolved oxygen concentration all the time, and the waste of surplus oxygen is avoided. The aeration controller controls the start and stop of the aeration fan, which can be easily realized by the technical means disclosed in the prior art, the aeration controller adopts a single chip microcomputer, the type of the single chip microcomputer can adopt single chip microcomputers of AT89C51, STC15 and the like, the single chip microcomputer is provided with a logic judgment circuit which can compare the dissolved oxygen concentration detected by the dissolved oxygen meter with an upper limit threshold value/a lower limit threshold value, the logic judgment circuit can be realized by an integrated numerical comparator such as 74LS85, the single chip microcomputer sends a control signal to a relay according to a judgment result, the relay is also a commonly used control device in the prior art, the relay is arranged on a power supply circuit of the aeration fan, the single chip microcomputer sends the control signal to the relay to control a contact switch of the relay to be opened or closed, and the single chip microcomputer controls each relay according to the dissolved oxygen concentration acquired by the dissolved oxygen meter of each biological reaction area, so that the aeration fan is correspondingly controlled to stop working or start working.
In some embodiments, a slope plate 44 is disposed in the aerobic tank 4, and the slope plate 44 extends from the bottom of the aerobic tank 4 to the side wall of the aerobic tank 4. The slope plate 44 plays a role in buffering sewage from the aerobic zone 41 to the settling zone 42, sludge is prevented from settling through the buffering of the slope plate 44, so that the settling amount of the sludge in the settling zone 42 is adjusted, and the multiple aerobic tanks 4 control the settling amount of the sludge step by step to carry out biological reaction to decompose the sludge step by step.
In some embodiments, the multi-stage sewage treatment device further comprises a secondary sedimentation tank 6, the secondary sedimentation tank 6 comprises an inclined sedimentation tank, the inclined sedimentation tank is communicated with the aerobic tank 4, and an inclined sedimentation plate is arranged at the bottom of the inclined sedimentation tank. The oblique sedimentation tank collects the residual sludge, partial sludge can be provided to the anaerobic tank 2/anoxic tank 3 through the sludge reflux pump, partial sludge is discharged as the residual sludge, the lower part of the oblique sedimentation tank is in an inverted cone shape, and the arrangement of the lower part of the inverted cone shape is more favorable for sludge gathering and sedimentation.
In some embodiments, the secondary sedimentation tank 6 comprises a filtration tank, the filtration tank is communicated with the inclined sedimentation tank, a second partition plate is arranged inside the filtration tank, a second gap is formed between the second partition plate and the bottom of the filtration tank, the filtration tank is divided into a filtration area 62 and a disinfection area 63 by the second partition plate, the biological filler 21 is arranged inside the filtration area 62, and the ultraviolet generator is arranged inside the disinfection area 63. Through the final treatment of the filter tank and the disinfection tank, the sewage is discharged more cleanly.
The sewage treatment method of the multistage sewage treatment device comprises the following steps:
A. sewage flows into the upper part of the primary sedimentation tank 1 from the water inlet pipe 2, sludge is sedimentated in the primary sedimentation tank 1 to a sludge collecting region, and the sludge is introduced into the anaerobic tank 2/anoxic tank 3 by a sludge delivery pump after being hydrolyzed and acidified for a certain time at the lower part of the primary sedimentation tank 1;
B. sewage flows into an anaerobic tank 2 from a primary sedimentation tank 1, the sewage flows into an anoxic tank 3 after undergoing an anaerobic reaction in the anaerobic tank 2, the sewage flows into an aerobic tank 4 after undergoing an anoxic reaction in the anoxic tank 3,
C. the sewage firstly enters an aerobic zone 41 to carry out aerobic reaction, then flows into a settling zone 42 from a gap between a first partition plate 43 and the bottom wall, is settled in the process of flowing from bottom to top in the settling zone 42, part of sludge is settled to the lower part of an aerobic tank 4 to continue the aerobic reaction, and then a phosphorus removal tank 5 is arranged;
D. the sewage flows into the anode part 51 from the connecting pipe 14, flows into the top of the anode part 51 and flows out from the bottom, enters the bottom of the dephosphorization tank 5, and flows into the inclined sedimentation tank after the electric dephosphorization;
E. the sewage is finally discharged through final sedimentation of the filter tank and ultraviolet disinfection of the disinfection tank.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A sewage dephosphorization device is characterized by comprising:
a phosphorus removal tank (5);
the anode part (51) is arranged in the dephosphorization pool (5) and is connected with a power supply (7);
the cathode component (52) is arranged in the phosphorus removal tank (5) and is connected with the power supply (7);
the anode part (51) is provided with a channel penetrating through two ends, one end of the channel is used for being communicated with the connecting pipe (14), the other end of the channel is close to the bottom wall of the phosphorus removal pool (5), a blade assembly is arranged in the channel, and the blade assembly is used for changing the flowing direction of water.
2. The sewage phosphorous removal device of claim 1, wherein the blade assembly comprises at least one first guide blade (513) and at least one second guide blade (514);
wherein the first guide vane (513) comprises a first helical structure and the second guide vane (514) comprises a second helical structure, the helical directions of the first and second helical structures being opposite.
3. The sewage phosphorus removal device of claim 1, wherein the anode members (51) are provided in a plurality, the plurality of anode members (51) are uniformly arranged in the phosphorus removal tank (5), and the plurality of anode members (51) are respectively communicated with the connecting pipe (14);
the cathode parts (52) are arranged in a plurality, and the cathode parts (52) are uniformly arranged in the phosphorus removal tank (5).
4. The sewage phosphorus removal device according to claim 1, wherein a first sludge collecting member is arranged at the bottom of the phosphorus removal tank (5), and comprises a first inclined plate and a first sludge discharge pump (53), wherein the first inclined plate extends obliquely from the bottom wall of the phosphorus removal tank (5) to the side wall of the phosphorus removal tank (5);
the first sludge pump (53) is arranged at the bottom of the dephosphorization pool (5), and the first sludge pump (53) is used for discharging sludge out of the dephosphorization pool (5).
5. A multi-stage sewage treatment plant, comprising: the primary sedimentation tank (1), the anaerobic tank (2), the anoxic tank (3), the aerobic tank (4) and the sewage dephosphorization device are sequentially communicated;
the sewage dephosphorization device is the sewage dephosphorization device as set forth in any one of claims 1-4.
6. The multistage sewage treatment plant according to claim 5, wherein a second sludge collecting member (12) is arranged inside the primary sedimentation tank (1), and the second sludge collecting member (12) forms a space for collecting the settled sludge with the bottom of the primary sedimentation tank (1) and makes the settled sludge hydrolyzed and acidified in the space;
the second sludge collecting component (12) comprises a second inclined plate and a second sludge discharge pump (13), and the second inclined plate extends from the bottom wall of the primary sedimentation tank (1) to the side wall of the primary sedimentation tank (1) in an inclined manner;
the second sludge discharge pump (13) is arranged at the bottom of the primary sedimentation tank (1), and the second sludge discharge pump (13) is used for conveying products of hydrolytic acidification to the anaerobic tank (2) and/or the anoxic tank (3).
7. The multi-stage sewage treatment plant according to claim 5, further comprising an aerobic tank (4), said aerobic tank (4) being in communication with said anoxic tank (3);
the inside first baffle (43) that sets up of good oxygen pond (4), first baffle (43) with good oxygen pond (4) bottom has first clearance, just first baffle (43) will good oxygen pond (4) are separated into good oxygen district (41) and settling zone (42), good oxygen district (41) set up a plurality of for good oxygen district (41) provide the aeration part of oxygen, settling zone (42) are used for deposiing the mud of aquatic in good oxygen district (41).
8. The multi-stage sewage treatment plant according to claim 7, wherein a slope plate (44) is arranged in the aerobic tank (4), and the slope plate (44) extends from the bottom of the aerobic tank (4) to the side wall of the aerobic tank (4) in an inclined manner.
9. The multistage sewage treatment plant according to claim 5, further comprising a secondary sedimentation tank (6), wherein the secondary sedimentation tank (6) comprises a slant sedimentation tank, the slant sedimentation tank is communicated with the aerobic tank (4), and the bottom of the slant sedimentation tank is provided with a slant sedimentation plate.
10. The multistage sewage treatment plant according to claim 9, wherein said secondary sedimentation tank (6) further comprises a filtration tank, said filtration tank being in communication with said inclined sedimentation tank;
the novel biological filter is characterized in that a second partition plate is arranged inside the filter tank, a second gap is formed between the second partition plate and the bottom of the filter tank, the filter tank is divided into a filtering area (62) and a sterilizing area (63) by the second partition plate, biological fillers (21) are arranged inside the filtering area (62), and an ultraviolet generator is arranged inside the sterilizing area (63).
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| CN113880323A (en) * | 2021-10-16 | 2022-01-04 | 浙江问源环保科技股份有限公司 | Electrochemistry sewage treatment system |
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2020
- 2020-10-27 CN CN202022429471.8U patent/CN213865536U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880323A (en) * | 2021-10-16 | 2022-01-04 | 浙江问源环保科技股份有限公司 | Electrochemistry sewage treatment system |
| CN113880323B (en) * | 2021-10-16 | 2023-01-31 | 浙江问源环保科技股份有限公司 | Electrochemistry sewage treatment system |
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