KR101087673B1 - Advanced wastewater treatment system using multi-story system and method for improvement of settling pond - Google Patents

Abstract

PURPOSE: Existing precipitating bath modified sewage treating system and method for eliminating total phosphorus are provided to improve the quality of discharging water by eliminating total phosphorus from the discharging water. CONSTITUTION: Existing precipitating bath modified sewage treating system for eliminating total phosphorus includes a reacting bath(200), a first precipitating bath(500), a second precipitating bath(300), a coagulating and mixing bath(400), valve modules(V1 to V3), and a controlling module. The reacting bath includes an anaerobic bath(210), anoxic bath(220), and an aerobic bath(230). The precipitating baths are installed at both sides of the reacting bath. The valve modules are installed between the first precipitating bath and the reacting bath, between an introducing bath and the first precipitating bath, and at the discharge part of the second precipitating bath. The controlling module controls the valve modules.

Description

Advanced wastewater treatment system using multi-story system and method for improvement of settling pond

The present invention relates to a sewage advanced treatment facility, and more particularly, to a sedimentation improved total phosphorus (TP) removal sewage advanced treatment system and method for improving the sedimentation site of an existing sewage advanced treatment system for the purpose of improving total phosphorus removal efficiency. will be.

1 is a perspective view showing the configuration of a reaction site constituting a conventional sewage treatment plant, Figures 2A and 2B is a photograph of a conventional sewage treatment plant.

A typical sewage treatment plant consists of reaction zones 10 as shown in FIG.

The reaction paper 10 is configured to include a reaction tank for performing each function of the sewage treatment process, Figure 1 shows an example of the reaction paper used in the A2 / O method is widely used.

The reaction paper 10 includes an anaerobic tank 20, an anaerobic tank 30, an aerobic tank 40 and a precipitation tank 50, the anaerobic tank 20 serves to release the phosphorus in the influent. At this time, the anaerobic tank 20 is connected to the inlet pipe 22 through which the influent water to be treated is supplied to supply the inlet water to the anaerobic tank 20.

In addition, the oxygen-free tank 30 serves to remove denitrification and organic matter, and the aerobic tank 40 serves to remove nitrification, phosphorus accumulation, and organic matter. In this case, the aeration tank 40 is provided with an aeration portion 42 for aeration of air in the aeration tank 40, the reaction paper 10 is an air supply pipe for supplying air to the aeration portion 42 44 is connected.

In addition, the settling tank 50 serves to separate the solid-liquid separation of the treated water and microorganisms.

The reaction paper 10 controls the concentration of microorganisms in the return pipes 32 and 46 and the reaction tanks 20, 30, 40, and 50 for internally conveying the nitric oxide from the aerobic tank 40 to the oxygen-free tank 30. In order to convey the sludge of the settling tank 50 is further configured to further include a sludge conveying pipe (52). At this time, although not shown, separate pumps are connected to each of the internal conveying pipes 32 and 46 and the sludge conveying pipe 52 for internal conveyance and sludge conveyance.

The sewage treatment plant has been developed and used A2 / O, Bardenpho, UCT, and VIP methods according to the arrangement of the reactor and the connection state of the return pipe.

Therefore, the structure of the reaction paper illustrated in FIG. 1 is merely an example of the prior art, and may be variously modified according to a treatment method.

The size of the reaction paper varies depending on the treatment capacity, but in the general sewage treatment plant, a height (H) of about 7 to 10 m, a width (B) of about 4 to 6 m, and a length (L) of about 70 to 100 m (L) Has

In addition, a plurality of the reaction sites are bundled to form a treatment series which is a basic unit of a sewage treatment facility, and a plurality of treatment series are collected to form a sewage treatment facility.

Thus, the entire sewage end treatment plant comprises dozens or more of reactors, as shown in FIGS. 2A and 2B above.

Therefore, as shown in FIG. 2, a vast area of land is required for the construction of a sewage treatment plant equipped with an advanced treatment facility according to the prior art.

Therefore, the above-described prior art has the following problems.

According to the recently revised Sewerage Law Enforcement Rules, the discharged water quality standards of public sewage treatment facilities (sewage treatment plants) applied from 2012 have been strengthened up to 10 times. In particular, effluent quality standards such as total phosphorus (T-P), the total amount of phosphorus compounds contained in water, and total phosphorus (T-P), which helps algae grow, are the main cause of water pollution and eutrophication. (Standards for discharged water quality will be raised significantly, strengthening to 0.2 ~ 0.5 mg / L.)

To this end, there is a need for supplementing and strengthening the existing sewage terminal treatment plant, or reprocessing the discharged water by completely rebuilding the sewage terminal treatment plant.

However, in order to rebuild the sewage terminal treatment plant already installed or to construct additional facilities, a separate site is required, which is impossible or very expensive depending on the condition of the place where the sewage terminal treatment plant is installed. Will occur.

In addition, in recent years, the sewage treatment plant has been changed from the existing standard activated sludge method to the A2 / O method series for the advanced treatment of sewage, which requires sufficient organic materials and nutrients for the bioreactor. There is a problem that the efficiency of the primary sedimentation battery for the precipitation of the treated water first introduced there is a problem, so that some of the recently constructed sewage terminal treatment plants omit primary sedimentation.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to improve the existing primary sedimentation battery for all sewage altitude treatment process with a primary sedimentation battery, without the construction of additional facilities on a new site This is to improve the water quality by additionally removing total phosphorus (TP) by allowing coagulation, mixing and two precipitations.

Another object of the present invention is to provide a sewage advanced treatment system to improve the sedimentation efficiency by installing a rapid filtration tank.

According to an aspect of the present invention for achieving the above object, the present invention is a sewage advanced treatment system by improving the sedimentation basin of the pre-installed sewage advanced treatment system including a plurality of sedimentation in order to improve the total phosphorus (TP) removal efficiency Agglomerate and reaction tank including the anaerobic tank, anoxic tank and an aerobic tank, the first and second settler batteries respectively provided on both sides of the reaction sheet and the treated water passing through the reaction and second settler cells. A valve is provided between the mixed paper, the first settling battery and the reaction paper, between the inlet and the first settling cell into which the water to be treated flows, and the discharge portion of the second settling battery, respectively, to control the flow of the water to be treated. And a control module for controlling the valve module, wherein the control module controls the valve module so that the water to be treated avoids the first settler. For example, the reaction paper and the second settler are continuously guided, and the treated water having passed through the second settler is introduced to the first settler through the flocculation and mixed paper and guided to the second settler.

The valve module includes a first valve to allow the first introduced water to flow into the reaction site by avoiding the first settler, and the treated water passing through the reaction paper and the second settled battery toward the agglomeration and mixed paper. And a third valve for inducing and a second valve for guiding the treated water that has passed through the flocculation / mixing paper and the first settler to be discharged to the next processing step or outside of the reaction paper.

The flocculation / mixing paper is configured to include a flocculation portion into which a flocculant is introduced and a miscification portion connected to the flocculation portion.

A rapid filtration tank is connected to the rear end portion of the first settler, and the water to be treated passing through the first settler by the second valve flows into the rapid filtration tank.

According to another feature of the present invention, the present invention is an improved sewage altitude treatment method of improving the sedimentation basin with a plurality of sedimentation basin including the first and second sedimentation cells to improve the total phosphorus (TP) removal efficiency And installing a valve module for controlling the flow of the water to be treated between the inlet and the first settler, the first settler and the reaction zone, and the outlet of the second settler, into which the water to be treated is introduced. A flocculation / mixing paper is installed in a section conveyed from the second settling battery to the first settling cell for treatment, and the treated water introduced between the coagulation / mixing paper and the first settling battery first avoids the first settling battery. A feed pipe for guiding flow into the reaction zone and a control module for controlling the valve module, and the first introduced feature by the valve module control by the control module; Water is induced to continuously pass through the reaction cell and the second settler, avoiding the first settler, and the treated water having passed through the second settler is introduced into the first settler after passing through the coagulation / mixing paper and performing secondary settling. Guide as much as possible.

The valve module includes a first valve to allow the first introduced water to flow into the reaction site by avoiding the first settler, and the treated water passing through the reaction paper and the second settled battery toward the agglomeration and mixed paper. And a third valve for inducing and a second valve for guiding the treated water that has passed through the flocculation / mixing paper and the first settler to be discharged to the next processing step or outside of the reaction paper.

A rapid filtration tank is installed to be connected to the rear end of the first immersion battery, and the treated water, which is secondly precipitated through the first immersion battery by the second valve, is induced to flow into the rapid filtration tank.

In the existing sedimentation pond improved total phosphorus (T-P) removal sewage altitude treatment system and method according to the present invention as described above can be expected the following effects.

In the present invention, by improving the existing sedimentation basin, the secondary sedimentation battery among the existing settled basins performs the conventional water treatment function, and the conventional primary sedimentation battery was installed to primary sedimentation of the treated water first introduced. Since the sedimentation after flocculation and admixture by the chemical treatment enables the secondary precipitation, the total phosphorus of the effluent is removed, and the quality of the effluent is greatly improved.

In addition, without the installation of an additional settling basin, it is possible to use the new method by improving the primary settler battery, which has been ineffective in the past, so that no additional facility site or settling basin is required, and thus, an economic effect of reducing the construction cost can be expected.

And, in the present invention, by the rapid filtration tank, can be filtered after the second precipitation, the water treatment of several stages are performed in one system, so the water treatment is concentrated and the efficiency is improved.

1 is a perspective view showing the configuration of a reaction site constituting a conventional sewage treatment plant.
2A to 2B are photographs taken of a conventional sewage treatment plant.
Figure 3 is a structural diagram showing the structure of a conventional sewage advanced treatment facility installed.
Figure 4 is a structural diagram showing the configuration of a preferred embodiment of the existing sedimentation improved total phosphorus (TP) removal sewage altitude treatment system according to the present invention improved the sewage advanced treatment system of FIG.
5 is a structural diagram showing the configuration of another embodiment of the existing sedimentation improved total phosphorus (TP) removal sewage advanced treatment system according to the present invention improved the sewage advanced treatment system of FIG.

Hereinafter, with reference to the accompanying drawings, a specific embodiment of the existing sedimentation pond improved total phosphorus (T-P) removal sewage altitude treatment system and method according to the present invention as described above will be described in detail.

First, for the convenience of description, the structure of the conventional sewage treatment system will be described with reference to FIG. 3.

3 shows the structure of a conventional sewage treatment facility. According to this, the first treated water is introduced into the sewage treatment plant via an inflow pumping station (1, inlet). More precisely, the treated water that has passed through the inflow pumping station 1 is distributed to the first settler 50A by the distribution tank 2, although not shown, the first settler 50A is divided into several zones. The distribution tank 2 is configured to guide the treated water to flow into each zone of the first settler 50A.

The first settler 50A is primarily used to remove suspended solids in the first to-be-treated water, and is designed in the same structure as the second settler 50B to be described below. When the precipitate (sludge) of the water to be treated introduced into the first settler 50A is precipitated, the supernatant water may be discharged through a discharge channel (not shown). The first settler 50A may be omitted in accordance with the BOD of the first water to be treated.

The water to be treated having passed through the first settler 50A is introduced into the reaction paper 10. The reaction paper 10 is composed of a structure similar to the technology that is the background of the invention described above, more precisely is composed of an anaerobic tank 20, an anaerobic tank 30, and an aerobic tank 40.

The anaerobic tank 20 releases phosphorus under anaerobic conditions so that phosphorus may be excessively ingested in the aerobic tank 40, and serves to release phosphorus and remove organic matter.

The anoxic tank 30 denitrates the nitrates (Notrate) of the water to be returned by the pump P from the aerobic tank 40, and also performs an organic matter removal function. That is, the denitrified nitrogen nitrate is denitrated using the organic substance from the to-be-processed water conveyed from the aerobic tank 40. FIG.

Finally, the aerobic tank (40, Aerobic Tank) is responsible for the oxidation, nitrification and phosphorus removal of organic matter. In Figure 3, the anaerobic tank 20, the anaerobic tank 30 is one each and the aerobic tank 40 is composed of two, this configuration can be changed in various ways.

Next, the water to be passed through the reaction paper 10 is introduced into the second settler 50B through the distribution tank 7 again. After sludge or the like is precipitated in the second settling battery 50B, it is finally discharged through the discharge tank 9 or post treatment such as ozone disinfection is performed.

In this way, without installing additional sedimentation facilities in the conventional sewage treatment plant, the existing sewage treatment plant is improved to further remove total phosphorus (TP) contained in the effluent to improve the quality of the effluent. The system is shown in FIG.

(Example 1)

According to this, the existing sedimentation pond improved total phosphorus (T-P) removal sewage altitude treatment system (hereinafter referred to as "sewage altitude treatment system") according to the present invention is provided with an inlet pumping station (100). The inflow pump station 100 is a space for storing and discharging first introduced water to be treated, and the first distribution tank 110 is connected to the inflow pump station 100.

The first distribution tank 110 guides the water to be treated in the inflow pumping station 100 to the reaction paper 200 to be described below. The first distribution tank 110 is for distributing the water to be treated in a space partitioned inside the first settler 500 in the beginning, and in this embodiment, serves to guide the water to be treated toward the reaction paper 200. Will be

The first precipitator 500 is connected to the first distribution tank 110. The first settler 500 has the same configuration as the second settler 300 described below, but some differences occur in its operation through the following control. That is, in the prior art, there is a difference in order, and the roles of the first and second settler 500 and the second settler 300 which performed the same function will be reset as follows.

To this end, in the present embodiment, the valve modules V1 to V3 are installed. The valve module (V1 ~ V3) is i) to be treated water first introduced to the reaction cell 200 to avoid the first settler 500, ii) the reaction sheet 200 and the second settler ( Induced water to be passed through each of the 300 to the flocculation, mixed paper 400, iii) the treated water passing through the flocculation, mixed paper 400 and the first settler 500, the reaction paper 200 It serves to guide the discharge to the next processing step or outside to avoid.

More specifically, the valve module (V1 ~ V3) is composed of the first valve (V1), the second valve (V2) and the third valve (V3), the first valve (V1) is the first inlet The treated water is introduced into the reaction paper 200 by avoiding the first settling battery 500, and the second valve V2 receives the treated water passing through the reaction paper 200 and the second settling battery 300, respectively. The third valve V3 guides toward the coagulation / mixing paper 400, and the treated water that has passed through the coagulation / mixing paper 400 and the first settler 500 avoids the reaction paper 200 and is then processed. It is guided to discharge to the stage or outside.

As shown in FIG. 4, the first valve V1 is installed between the first distribution tank 110 and the first settler 500. Accordingly, the first valve V1 guides the treated water to flow into the reaction vessel 200 from the first distribution tank 110 to avoid the first settler 500. That is, the first valve V1 and the evacuation pipe L1 change the flow path so that the precipitation may be performed in the second settler 300 which will be described later than the first settler 500 which is conventionally installed. The avoidance pipe L1 is a flow path that directly connects the first distribution tank 110 and the reaction paper 200.

Of course, the first valve V1 may guide the treated water to flow into the first settler 500 from the first distribution tank 110 under the control of the control module. For reference, since the reaction paper 200 has the same configuration as the reaction paper 200 of FIG. 3 described above, description thereof will be omitted.

The second distribution tank 112 is connected to the reaction paper 200 again. The second distribution tank 112 has the same configuration and function as the first distribution tank 110, and serves to guide the water to be treated to the second settler 300.

The second settler 300 receives the treated water having passed through the reaction paper 200 to precipitate sludge, etc., and is then returned through a conveying channel (not shown) to be reprocessed (conveyed sludge) or discharge channel (not shown). To be discharged through (surplus sludge).

The discharge pump station 117 (discharge part) is connected to the second settler 300. The discharge pump station 117 serves to guide the post-treatment such as discharge of the symbol water from the first settler 500 to the outside or ozone disinfection.

At this time, a third valve V3 is installed between the second settler 300 and the discharge pumping station 117. The third valve V3 is guided so that the water to be discharged from the second settler 300 is not immediately discharged through the discharge pump station 117, but is once again transferred to the flocculation / mixing paper 400 for reprocessing. do.

To this end, a conveying pipe (L2) is connected to the third valve (V3) and a second pump (P2) is provided in the conveying pipe (L2) to aggregate and mix the symbol water of the second settler (300) ( 400) to be transported.

Cohesion and mixed paper 400 is connected to the conveying pipe (L2). The flocculation / mixture paper 400 is to be treated with chemicals through the chemical treatment, and to effectively remove the phosphorus contained in the water to be treated.

The agglomeration / mixing paper 400 includes an agglomerating part for injecting a flocculant such as a floating material coagulant (PAC, PolyAluminum Chloride), iron salt or aluminum sulfate, and a miscification part connected to the agglomeration part. It can be installed separately. That is, the flocculation / mixing paper 400 is for removal of phosphorus, and the removal of phosphorus is carried out by mixing and flocculating the phosphorus present in the water to be treated, followed by a mixing-aggregation process, and finally depositing it in the first settler 500. Is done through.

The coagulation / mixture paper 400 is connected to the first settler 500 through a transfer pipe L2 ′. In this case, the transfer pipe L2 ′ is connected to the rear side of the first valve V1 so that the water to be treated may flow into the first settler 500.

Meanwhile, a second valve V2 is installed between the first settler 500 and the reaction cell 200. The second valve (V2) is introduced into the first settler 500 to prevent the treated water after the sludge settled back to the reaction vessel 200, and guides the flow into the discharge pump station 117 It plays a role. To this end, a discharge pipe L3 is installed between the first settling battery 500 and the discharge pumping station 117.

Hereinafter will be described the operation of Example 1 of the existing sedimentation pond improved total phosphorus (T-P) removal sewage altitude treatment system and method according to the present invention as described above.

First, when the water to be treated is first introduced, it passes through the inlet pumping station 100 and the first distribution tank 110 and avoids the first settler 500 by the action of the first valve V1 (①). Guided to 200 (2). The treated water undergoing the bioreaction through the anaerobic tank 210, the anoxic tank 220, and the aerobic tank 230 in the reaction zone 200 is again subjected to the second settler 300 through the second distribution tank 112 (③ Guided by).

Sludge is precipitated in the second settler 300, the precipitated sludge is conveyed to be reprocessed or discharged. Then, the water to be treated is guided to the flocculation / mixing paper 400 through the conveying pipe L2 again by the action of the third valve V3 (④).

The treated water guided to the flocculation / mixing paper 400 may be removed by phosphorus through flocculation and miscification by the action of a flocculant. More precisely, phosphorus is sludged through agglomeration and miscification, which is precipitated and removed.

At this time, the precipitation of the sludge may be made through the first settler 500 connected to the flocculation, mixed paper (400). As shown in FIG. 4, the coagulation / mixture paper 400 is connected to the first settler 500 through a transfer pipe L2 ′ (⑤), and the water to be treated is sludge that has been aggregated in the first settler 500. May precipitate.

Finally, the water to be treated after being precipitated in the first settler 500 is delivered to the discharge pump station 117 through the discharge pipe (L3) (⑥), finally discharged or subjected to post-treatment such as ozone disinfection. .

Thus, according to this embodiment, in the existing sewage altitude treatment system, the valve modules V1 to V3 and the control module, the transfer pipe L2 ', the discharge pipe L3, the transfer pipe L2, and the flocculation and mixed paper ( By installing 400, two cycles of processing in which different functions are performed in one system are performed. Accordingly, it is possible to effectively utilize the first settler 500, which has been ineffective in the past, and to simply integrate a processing system that had to be separately constructed for two cycles of treatment.

(Example 2)

In this embodiment, the description of the same structure as in the first embodiment will be omitted, and only the other structure will be described.

As shown in Figure 5, a rapid filtration tank 600 is installed. The rapid filtration tank 600 is installed between the first settling battery 500 and the discharge pump station 117, more precisely is installed on the movement path of the discharge pipe (L3).

Filtration (砂 濾 過) is used to filter the suspended particles and suspended matter contained in the final treated water, in particular the rapid filtration tank 600 is for performing the rapid filtration method (법 法). Specifically, rapid filtration reaches 120 m / day of filtration, and when flocculant is added to floc in the water to be treated, it is propelled, and the particle diameter is increased to promote the filtration speed. Stop filtration and send wash water to the bottom to wash off the turbidity trapped in the filtrate.

That is, the rapid filtration tank 600 is for filtration and rapid filtration of the water to be treated after sludge precipitation through the first settler 500 again. To this end, the rapid filtration tank 600 is located between the first settler 500 and the discharge pump station 117, the water to be treated is guided by the second valve (V2).

Hereinafter will be described the operation by Example 2 of the existing sedimentation pond improved total phosphorus (T-P) removal sewage altitude treatment system and method according to the present invention as described above.

First, when the water to be treated is first introduced, it passes through the inlet pumping station 100 and the first distribution tank 110 and avoids the first settler 500 by the action of the first valve V1 (①). Guided to 200 (2). The treated water undergoing the bioreaction through the anaerobic tank 210, the anoxic tank 220, and the aerobic tank 230 in the reaction zone 200 is again subjected to the second settler 300 through the second distribution tank 112 (③ Guided by).

Sludge is precipitated in the second settler 300, the precipitated sludge is conveyed to be reprocessed or discharged. Then, the water to be treated is guided to the flocculation / mixing paper 400 through the conveying pipe L2 again by the action of the third valve V3 (④).

The treated water guided to the flocculation / mixing paper 400 may be removed by phosphorus through flocculation and miscification by the action of a flocculant. More precisely, phosphorus is sludged through agglomeration and miscification, which is precipitated and removed.

At this time, the precipitation of the sludge may be made through the first settler 500 connected to the flocculation, mixed paper (400). As shown in FIG. 4, the coagulation / mixture paper 400 is connected to the first settler 500 through a transfer pipe L2 ′ (⑤), and the water to be treated is sludge that has been aggregated in the first settler 500. May precipitate.

Subsequently, the water to be treated after being precipitated in the first settler 500 is suspended in the rapid filtration tank 600 through the connecting pipe L3 '(6), and undergoes a rapid filtration process.

Finally, the rapidly filtered treated water is finally delivered to the discharge pump station 117 through the discharge pipe (L3) (⑦), discharged to the outside or subjected to post-treatment such as ozone disinfection.

Thus, according to this embodiment, in the existing sewage altitude treatment system, the valve modules V1 to V3 and the control module, the transfer pipe L2 ', the discharge pipe L3, the transfer pipe L2, and the flocculation and mixed paper ( By installing 400, two cycles of processing in which different functions are performed in one system are performed. Accordingly, it is possible to effectively utilize the first settler 500, which has been ineffective in the past, and to simply integrate a processing system that had to be separately constructed for two cycles of treatment.

Particularly, in the present embodiment, the bioreaction by the reaction paper 200 in two cycles, the aggregation and removal of phosphorus through the flocculation / mixing paper 400, and the filtration by the rapid filtration tank 600 are performed. There are multiple stages of processing within the system.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

100: inlet pump station 200: reaction
300: second settler 400: cohesive and mixed paper
500: first settler 600: rapid filtration tank

Claims (7)

In the sewage advanced treatment system by improving the sedimentation basin of the pre-installed sewage advanced treatment system including a plurality of sediments to improve the total phosphorus (TP) removal efficiency,
Reaction zones including anaerobic tanks, anaerobic tanks and aerobic tanks;
First and second needle batteries respectively installed on both sides with the reaction paper interposed therebetween;
Agglomeration-mixing paper through which the water to be treated which has passed through the reaction paper and the second settling battery passes;
A valve module installed between the first settler and the reaction spot, between the inlet and the first settler, and the discharge section of the second settler, through which the water to be treated flows;
It is configured to include a control module for controlling the valve module,
The control module controls the valve module so that the water to be treated avoids the first settler and continuously passes through the reaction zone and the second settler, and the treated water passing through the second settler is the flocculation / mixed paper. The sedimentation improved total phosphorus (TP) removal sewage advanced treatment system, characterized in that guided to be introduced to the first settler after the second settling.
The method of claim 1, wherein the valve module
A first valve to allow the first inflow of the water to be treated to flow into the reaction site by avoiding the first settler;
A third valve for guiding the water to be treated which has passed through the reaction paper and the second settler toward the agglomeration and mixed paper;
The sedimentation pond improved total phosphorus (TP) removal sewage, characterized in that it comprises a second valve for guiding the treated water passing through the flocculation, mixed paper and the first settler to avoid the reaction paper to be discharged to the next treatment step or outside. Advanced processing systems.
3. The conventional sedimentation basin improved total phosphorus (TP) removal sewage treatment system according to claim 2, wherein the flocculating / mixing paper comprises a flocculating part for introducing a flocculant and a blending part connected to the flocculating part.
The method according to claim 2 or 3, wherein the first settling battery is connected to a rapid filtration tank, and the treated water passing through the first settling cell by the third valve flows into the rapid filtration tank. Sedimentation enhanced sewage treatment system.
In the improved sewage treatment method of improved sedimentation basin with a plurality of sedimentation basin including the first and second sedimentation basin to improve the total phosphorus (TP) removal efficiency,
Installing a valve module for controlling the flow of the water to be treated between the inlet and the first settling, the first settling and the reaction site, and the discharge portion of the second settling, the inflow of the water to be treated,
A flocculation / mixed paper is installed in a section conveyed from the second settler to the first settler for chemical treatment,
A transfer pipe between the coagulation / mixture paper and the first settler, and an evacuation tube for guiding the first treated water to flow into the reaction place by avoiding the first settler; By installing a control module for controlling the valve module,
By the control of the valve module by the control module, the first to-be-treated water is introduced to avoid the first settler and continuously pass through the reaction site and the second settler, and the to-be-treated water passing through the second settler is Improved total phosphorus (TP) removal sewage advanced treatment method characterized in that guided to flow through the flocculation, mixed paper and back to the first settler.
The method of claim 5, wherein the valve module
A first valve to allow the first inflow of the water to be treated to flow into the reaction site by avoiding the first settler;
A third valve for guiding the water to be treated which has passed through the reaction paper and the second settler toward the agglomeration and mixed paper;
Improved total phosphorus (TP) removal sewage advanced treatment, characterized in that it comprises a second valve for guiding the treated water passing through the flocculation, mixed paper and the first settler to avoid the reaction paper to be discharged to the next treatment step or outside. Way.
The method of claim 6, wherein a rapid filtration tank is installed to be connected to the first settler, and the second settling water is introduced into the rapid filtration tank by passing through the first settler by the second valve. Advanced sewage treatment method for improved total phosphorus (TP).

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