CN212246704U - Sewage treatment device - Google Patents
Sewage treatment device Download PDFInfo
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- CN212246704U CN212246704U CN202022208539.XU CN202022208539U CN212246704U CN 212246704 U CN212246704 U CN 212246704U CN 202022208539 U CN202022208539 U CN 202022208539U CN 212246704 U CN212246704 U CN 212246704U
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Abstract
The utility model discloses a sewage treatment device, which comprises an autotrophic denitrification filter tank, a water pump, a reaction tank, a dispensing tank, a magnetic separator, a clarification tank, a reflux sludge pump and a residual sludge pump; the water inlet of the autotrophic denitrification filter tank is connected with the first-level A standard effluent, and the water outlet of the autotrophic denitrification filter tank is connected with the water inlet of the reaction tank through a water pump; the water outlet of the reaction tank is connected with the water inlet of the clarification tank; the clarification tank is provided with a water outlet and a return sludge outlet, the return sludge outlet is arranged at the bottom of the clarification tank, and the return sludge outlet is respectively connected with the reaction tank and the magnetic separator through a return sludge pump; the magnetic separator is provided with a magnetic powder recovery port and a surplus sludge outlet, the magnetic powder recovery port is connected with the reaction tank, and the surplus sludge outlet is connected through a surplus sludge pump; the dispensing tank is connected with a dosing port of the reaction tank; according to the method, a carbon source and a phosphorus removal agent are not required to be added from an external source, the process is simple, the dependence on the carbon source is not required, the problem that the COD/BOD secondary standard exceeding of effluent water does not exist, and the purpose of reaching surface IV water is achieved.
Description
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to sewage treatment device and technology.
Background
The municipal sewage treatment comprises the treatment of municipal sewage treatment plants and the treatment of rural domestic sewage, and the main treatment processes are an activated sludge process, an AB process, an A/O process and an A process2O method, SBR method, oxidation ditch method, MBR and other processing methods. Most municipal sewage plants adopt an activated sludge process in the day. The principle of biological treatment is to convert organic pollutants into harmless gas products (CO) by biological action, especially action of microorganisms, to complete decomposition of organic matters and synthesis of organisms2) Liquid products (water) and solid products (microbial populations or biological sludges) rich in organic matter; the redundant biological sludge is subjected to solid-liquid separation in the sedimentation tank and is removed from the purified sewage, but the treatment methods generally reach the sewage discharge standard of the first class A, and the nitrate content in the effluent is higher.
In recent years, the national requirements for ecological management are increasingly strict, the river water generally reaches the IV-class water standard on the earth surface, the municipal sewage discharge is required to reach the IV-class water standard on the earth surface, and the standard improvement and the modification are inevitable; in order to reach the surface IV type water standard, the nitrate in the effluent water of the existing first-level A standard needs to be denitrified, so that the total nitrogen reaches the standard.
SUMMERY OF THE UTILITY MODEL
To the defects in the prior art, the utility model aims to provide a sewage treatment device which can effectively remove the total nitrogen amount in the effluent of the primary A standard.
The utility model adopts the technical proposal that:
a sewage treatment device comprises an autotrophic denitrification filter tank, a water pump, a reaction tank, a dispensing tank, a magnetic separator, a clarification tank, a return sludge pump and a residual sludge pump; the water inlet of the autotrophic denitrification filter tank is connected with the first-level A standard effluent, and the water outlet of the autotrophic denitrification filter tank is connected with the water inlet of the reaction tank through a water pump; the water outlet of the reaction tank is connected with the water inlet of the clarification tank; the clarification tank is provided with a water outlet and a return sludge outlet, the return sludge outlet is arranged at the bottom of the clarification tank, and the return sludge outlet is respectively connected with the reaction tank and the magnetic separator through a return sludge pump; the magnetic separator is provided with a magnetic powder recovery port and a surplus sludge outlet, the magnetic powder recovery port is connected with the reaction tank, and the surplus sludge outlet is connected through a surplus sludge pump; the dispensing tank is connected with a dosing port of the reaction tank.
Further comprises a backwashing pool, and the backwashing pool is connected with a backwashing port of the autotrophic denitrification filter through a water pump.
Further, the reaction tank comprises a first reaction tank, a second reaction tank and a third reaction tank which are connected in sequence, the dispensing tank comprises a PAC dispensing tank and a PAM dispensing tank, the PAC dispensing tank is connected with the first reaction tank, the PAM dispensing tank is connected with the third reaction tank, initial magnetic powder is added into the second reaction tank, and a magnetic powder recovery port of the magnetic separator is connected with the second reaction tank.
Furthermore, the return sludge outlet is connected with the second reaction tank through a return sludge pump.
The PAC dispensing tank is connected with the first reaction tank through the metering pump, and the PAM dispensing tank is connected with the third reaction tank through the screw pump.
And the device further comprises a residual sludge temporary storage tank, wherein a residual sludge outlet of the magnetic separator is connected with the residual sludge temporary storage tank, and the residual sludge temporary storage tank is connected with a residual sludge pump.
Furthermore, stirrers are arranged in the reaction tank and the residual sludge temporary storage tank.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
1. by reduced sulfur compounds, Fe2+、H2And the inorganic substances are used as electron donors, so that residual organic substances are not generated.
2. No need of additional organic carbon source, and greatly reduced investment and operation cost.
3. The autotrophic bacteria have long growth period and low growth rate, and reduce the sludge yield and the risk of effluent biological pollution.
4. The autotrophic microorganisms reduce nitrate into nitrogen by using iron ore as an electron donor, synchronously generate Fe3+ to be combined with phosphate to realize phosphorus removal without adding a carbon source and a phosphorus removal agent from an external source, and have the advantages of simple process form, no carbon source dependence and no secondary overproof COD/BOD of effluent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a sewage treatment device provided in an embodiment of the present application.
The system comprises an autotrophic denitrification filter tank 1, iron ore 2, a water pump 3, a backwashing tank 4, a reaction tank 5, a first reaction tank 51, a second reaction tank 52, a third reaction tank 53, a magnetic separator 6, a clarification tank 7, a temporary residual sludge storage tank 8, a return sludge pump 9, a residual sludge pump 10, a stirrer 11, a metering pump 12, a PAC dispensing tank 13, a PAM dispensing tank 14 and a screw pump 15.
Detailed Description
Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
Referring to fig. 1, the sewage treatment device comprises an autotrophic denitrification filter 1, a water pump 3, a reaction tank 5, a dispensing tank, a magnetic separator 6, a clarification tank 7, a return sludge pump 9 and a residual sludge pump 10; the water inlet of the autotrophic denitrification filter 1 is connected with the first-level A standard effluent, and the water outlet of the autotrophic denitrification filter is connected with the water inlet of the reaction tank 5 through the water pump 3; the water outlet of the reaction tank 5 is connected with the water inlet of the clarification tank 7; the clarification tank 7 is provided with a water outlet and a return sludge outlet, the return sludge outlet is arranged at the bottom of the clarification tank 7, and the return sludge outlet is respectively connected with the reaction tank 5 and the magnetic separator 6 through a return sludge pump 9; the magnetic separator 6 is provided with a magnetic powder recovery port and a surplus sludge outlet, the magnetic powder recovery port is connected with the reaction tank 5, and the surplus sludge outlet is connected through a surplus sludge pump 10; the dispensing tank is connected with a dosing port of the reaction tank 5.
The autotrophic denitrification filter 1 utilizes inorganic mineral composite materials, constructs an autotrophic denitrification system by activating related microorganisms in water, uses mineral materials and organic matters in water as microorganism electron donors together, uses nitrified salt as a final electron acceptor, and reduces nitrate into nitrogen gas through the autotrophic denitrification process, so that the aim of nitrogen removal is fulfilled, the total nitrogen content in water is reduced, and the nitrogen removal is easy and pollution-free.
The mineral material can adopt iron ore 2, autotrophic microorganisms in water utilize the iron ore 2 as an electron donor to reduce nitrate into nitrogen, Fe3+ is synchronously generated, Fe3+ is combined with phosphate in water to realize phosphorus removal, a carbon source and a phosphorus removal agent do not need to be added externally, the process is simple, the carbon source does not need to be relied on, the problem that COD/BOD of effluent exceeds the standard secondarily does not exist, and surface IV water is obtained.
The treated first-grade A standard effluent enters the autotrophic denitrification filter 1 through the water inlet of the autotrophic denitrification filter 1, and enters the reaction tank 5 for dephosphorization after denitrification by the autotrophic denitrification filter 1.
The reaction tank 5 comprises a first reaction tank 51, a second reaction tank 52 and a third reaction tank 53 which are sequentially connected, the dispensing tank comprises a PAC dispensing tank 13 and a PAM dispensing tank 14, the PAC dispensing tank 13 is connected with the first reaction tank 51, a coagulant is added into the first reaction tank 51 through a metering pump 12, the PAM dispensing tank 14 is connected with the third reaction tank 53, the flocculant is added into the third reaction tank 53 through a screw pump 15, initial magnetic powder is added into the second reaction tank 52, and a magnetic powder recovery port of the magnetic separator 6 is connected with the second reaction tank 52.
The PAC dispensing tank 13 is used for adding a coagulant into the first reaction tank 51, the PAM dispensing tank 14 is used for adding a flocculant into the third reaction tank 53, initial magnetic powder is pre-added into the second reaction tank 52, denitrified water sequentially enters the first reaction tank 51, the second reaction tank 52 and the third reaction tank 53 and reacts with the coagulant, the flocculant and the magnetic powder in the reaction tank 5 to form a stable flocculating constituent taking the magnetic powder as a coagulation nucleus, the specific gravity of the magnetic powder is 5 times that of the water, so that the specific gravity of the flocculating constituent combined with the magnetic powder is rapidly increased, the flocculating constituent can rapidly settle within minutes after automatically flowing into the clarification tank 7, the settling speed can reach 40 meters per hour and is 20 times of that of conventional coagulation and sedimentation, and meanwhile, the bridging, adsorption and capturing capabilities of coagulation and flocculation reactions are further improved, and the treatment effect is enhanced. Through carrying out magnetic coagulation treatment in the reaction tank 5, phosphorus in water can be effectively removed, so that the effluent reaches the discharge standard of IV-class water on the earth surface, and the treated water is discharged from a water outlet of a clarification tank 7.
A return sludge outlet is arranged at the bottom of the clarification tank 7, a flocculating constituent containing magnetic powder is discharged from the return sludge outlet and is connected with the second reaction tank 52 and the magnetic separator 6 through a return sludge pump 9, one part of return sludge flows into the second reaction tank 52 for reaction, the other part of return sludge flows into the magnetic separator 6 for separating the magnetic powder through the magnetic separator 6, the separated magnetic powder enters the second reaction tank 52 through a magnetic powder recovery port for recycling, and the separated sludge is discharged from a residual sludge outlet.
The device also comprises a temporary storage tank 8 for residual sludge, wherein the residual sludge outlet of the magnetic separator 6 is connected with the temporary storage tank 8 for residual sludge, and the temporary storage tank 8 for residual sludge is connected with a residual sludge pump 10. The separated sludge is discharged into a residual sludge temporary storage tank 8 for temporary storage, and after a certain amount of sludge is reached, the sludge is discharged by a residual sludge pump 10 for dehydration treatment.
The stirrers 11 are arranged in the first reaction tank 51, the second reaction tank 52, the third reaction tank 53 and the temporary residual sludge storage tank 8, and are stirred by the stirrers 11, so that the reaction is more complete.
In order to back wash the autotrophic denitrification filter 1, the device further comprises a back wash tank 4, and the back wash tank 4 is connected with a back wash port of the autotrophic denitrification filter 1 through a water pump 3.
By adopting the sewage treatment device, the treated first-grade A standard effluent enters the autotrophic denitrification filter 1, organic matters in the water and iron ore 2 in the autotrophic denitrification filter 1 are jointly used as microorganism electron donors, nitrified salt is used as a final electron acceptor, the nitrified salt in the water reacts to form nitrogen, the nitrogen in the water is removed, and meanwhile, Fe3+ and Fe3+ are generated to be combined with phosphate in the water to realize phosphorus removal; the denitrified water enters a reaction tank 5, under the combined action of a coagulant, magnetic powder and a flocculating agent, insoluble pollutants such as algae, smile suspended matters, colloid, bacteria and the like in the water are combined with the magnetic powder to form a magnetic flocculating constituent, the magnetic flocculating constituent and the water enter a clarification tank 7 together, the magnetic flocculating constituent sinks, the water enters the reaction tank 5 and a magnetic separator 6 from a return sludge outlet at the bottom of the clarification tank 7, clear water with nitrogen and phosphorus removed is discharged from a water outlet at the upper side of the clarification tank 7, the removal of nitrogen and phosphorus is realized, and the water quality reaches surface IV-class water.
The return sludge entering the magnetic separator 6 is separated from the magnetic powder in the magnetic separator 6, the separated magnetic powder is put into the reaction tank 5 again for cyclic utilization, the separated sludge is discharged by the excess sludge pump 10, and the discharged excess sludge only contains a very small amount of magnetic powder, so that the cyclic utilization of the magnetic powder is realized.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (7)
1. A sewage treatment device is characterized by comprising an autotrophic denitrification filter (1), a water pump (3), a reaction tank (5), a dispensing tank, a magnetic separator (6), a clarification tank (7), a return sludge pump (9) and a residual sludge pump (10); the water inlet of the autotrophic denitrification filter (1) is connected with the first-level A standard effluent, and the water outlet of the autotrophic denitrification filter is connected with the water inlet of the reaction tank (5) through a water pump (3); the water outlet of the reaction tank (5) is connected with the water inlet of the clarification tank (7); a water outlet and a return sludge outlet are arranged on the clarification tank (7), the return sludge outlet is arranged at the bottom of the clarification tank (7), and the return sludge outlet is respectively connected with the reaction tank (5) and the magnetic separator (6) through a return sludge pump (9); the magnetic separator (6) is provided with a magnetic powder recovery port and a residual sludge outlet, the magnetic powder recovery port is connected with the reaction tank (5), and the residual sludge outlet is connected through a residual sludge pump (10); the dispensing tank is connected with a dosing port of the reaction tank (5).
2. The sewage treatment device according to claim 1, further comprising a backwashing tank (4), wherein the backwashing tank (4) is connected with a backwashing port of the autotrophic denitrification filter (1) through a water pump (3).
3. The sewage treatment device according to claim 1, wherein the reaction tank (5) comprises a first reaction tank (51), a second reaction tank (52) and a third reaction tank (53) which are connected in sequence, the dispensing tank comprises a PAC dispensing tank (13) and a PAM dispensing tank (14), the PAC dispensing tank (13) is connected with the first reaction tank (51), the PAM dispensing tank (14) is connected with the third reaction tank (53), initial magnetic powder is added in the second reaction tank (52), and a magnetic powder recovery port of the magnetic separator (6) is connected with the second reaction tank (52).
4. Sewage treatment plant according to claim 3, characterised in that said return sludge outlet is connected to the second reaction tank (52) by means of a return sludge pump (9).
5. The wastewater treatment plant according to claim 3, further comprising a metering pump (12) and a screw pump (15), wherein the PAC dosing tank (13) is connected to the first reaction tank (51) through the metering pump (12), and the PAM dosing tank (14) is connected to the third reaction tank (53) through the screw pump (15).
6. The sewage treatment plant according to any one of claims 1 to 5, further comprising a temporary excess sludge storage tank (8), wherein the residual sludge outlet of the magnetic separator (6) is connected to the temporary excess sludge storage tank (8), and the temporary excess sludge storage tank (8) is connected to a residual sludge pump (10).
7. Sewage treatment plant according to claim 6, characterised in that stirrers (11) are provided in said reaction tank (5) and in said temporary storage tank (8) for excess sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022208539.XU CN212246704U (en) | 2020-09-30 | 2020-09-30 | Sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022208539.XU CN212246704U (en) | 2020-09-30 | 2020-09-30 | Sewage treatment device |
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| CN212246704U true CN212246704U (en) | 2020-12-29 |
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| CN202022208539.XU Expired - Fee Related CN212246704U (en) | 2020-09-30 | 2020-09-30 | Sewage treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112062423A (en) * | 2020-09-30 | 2020-12-11 | 宜兴国蓝环保科技有限公司 | Sewage treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112062423A (en) * | 2020-09-30 | 2020-12-11 | 宜兴国蓝环保科技有限公司 | Sewage treatment device |
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