KR20060026681A - Apparatus and method for all-weather treatment of sewage and wastewater by efficient combination of treatment functions - Google Patents

Abstract

The present invention is a method and apparatus for treating inflow water inflow exceeding the standard capacity of the treatment apparatus using a conventional sewage and wastewater treatment apparatus, and in particular, in the conventional sewage, sewage, and wastewater treatment, tertiary treatment functions. In the rainy weather, the present invention relates to an apparatus and method for treating all-weather sewage and wastewater, which simultaneously treats sewage and wastewater introduced in excess of facility capacity. The apparatus according to the present invention utilizes the sewage and wastewater treatment apparatus including a screen / settler, a primary sedimentation basin, a bioreactor, a secondary sedimentation basin, and a tertiary treatment facility to remove influent water exceeding the standard capacity of the sewage and wastewater treatment apparatus. In the apparatus for treatment, the inflow water exceeding the standard capacity of the sewage and waste water treatment apparatus of the inflow water flowing into the screen / clarification paper passes through the screen / immersion paper or the primary sedimentation basin and then bypassed to the tertiary treatment facility And further comprising means for treating the excess influent water bypassed by the bypass means to the tertiary treatment facility at the tertiary treatment facility.

Description

All-weather sewage and wastewater treatment device and method for maximizing the treatment function in Cheoncheon-si and rainy weather

1 is a schematic view of sewage and wastewater treatment according to the prior art.

Figure 2 is a schematic diagram showing the configuration of the sewage and wastewater treatment apparatus according to an embodiment of the present invention.

3 shows a schematic diagram of an automated system of sewage and wastewater treatment apparatus according to an embodiment of the invention.

4 is a flow chart showing a sewage and wastewater treatment method according to an embodiment of the present invention.

5 and 6 are diagrams showing data on the water quality of treated water treated according to the apparatus and method according to the present invention.

<Explanation of symbols for the main parts of the drawings>

31, 32: sensor 33: controller

34: flocculant administration means 35, 36, 37: control line

The present invention is an apparatus and method for treating influent water exceeding the standard capacity of the sewage and wastewater treatment apparatus, which can process the inflow water exceeding the standard capacity of the treatment apparatus using the existing sewage and wastewater treatment apparatus. In particular, in the conventional sewage and wastewater treatment, the present invention relates to an all-weather sewage and wastewater treatment system and method for simultaneously treating the sewage and wastewater flowing in excess of the facility capacity during the rainy season while performing the third treatment function.

Figure 1 shows a schematic view of the treatment of the conventional sewage and waste water treatment apparatus. As shown in the figure, sewage and the like flows into the screen / settled paper and flows out through the primary sedimentation basin, bioreactor, secondary sedimentation basin and tertiary treatment facility.

Rainwater or sewage, which flows into the treatment plant in excess of the capacity as in the rain in such a conventional treatment apparatus, is directly passed through the screen / sedimentation basin or primary sedimentation basin without being introduced into the bioreactor, which is the main process of the treatment facility, as shown in the drawing. It has been discharged and has become a major contaminant in rivers and the like. In particular, when the rainwater that exceeds the treatment capacity of the existing treatment apparatus during rainy weather is discharged in the middle without passing through all the treatment facilities, various organic pollutants having high initial rainwater, especially harmful organic substances such as harmful heavy metals or residual pesticides, etc. As the back is discharged directly to the river, there was a problem of killing the fish inhabiting the river.

Accordingly, there is a need for a new apparatus and method capable of treating sewage and the like that flow in excess of the treatment capacity of an existing treatment apparatus, such as rainy weather, in a sewage and wastewater treatment apparatus.

It is an object of the present invention to provide a sewage and wastewater treatment apparatus and method capable of treating an inflow of water inflow exceeding the reference capacity of the treatment apparatus using existing sewage and wastewater treatment apparatus.

An object of the present invention is to treat influent water exceeding the standard capacity of the sewage and wastewater treatment apparatus using a sewage and wastewater treatment apparatus including a screen / settler, a primary sedimentation basin, a bioreactor, a secondary sedimentation basin and a tertiary treatment facility. In order to pass through the screen / settling basin or the first sedimentation basin of the inflow of the sewage and wastewater treatment apparatus of the influent flowing into the screen / settling basin to bypass the third treatment facility The apparatus further comprises means, wherein the excess influent water bypassed by the bypass means to the tertiary treatment plant is treated by the apparatus for treating influent water exceeding the reference capacity of the sewage and wastewater treatment apparatus, which is treated at the tertiary treatment plant. Can be achieved.

An apparatus for treating influent water exceeding a reference capacity of the sewage and wastewater treatment apparatus is provided to the excess influent water bypassed to the tertiary treatment facility by the bypass means after passing through the screen / sedimentation basin or the primary sedimentation basin. It is preferable to further include a means for introducing a flocculant.

The apparatus may further include a first sensor connected to an inlet of the screen / settled paper and detecting a flow rate flowing into the screen / settled paper, and a controller connected to the first sensor. Upon receiving a signal indicating that the flow rate inflow exceeded the reference capacity of the sewage and wastewater treatment apparatus, the controller controls to open the valve constituting the bypass means so that the flow rate exceeds the reference capacity of the sewage and wastewater treatment apparatus. It is preferable to bypass the to the tertiary treatment facility.

And a second sensor connected to the controller, the second sensor being connected to an oil pipe constituting the bypass means and detecting a contamination concentration of excess inflow water passing through the oil pipe. When the controller receives a signal that the contamination concentration of the influent exceeded a predetermined criterion, the controller controls the valve constituting the flocculant injecting means to administer the flocculant to the excess influent. It is desirable to treat influent above the reference capacity.

In addition, the flocculant may be PAC (polyalumium chloride), FeCl ₃ , alum (limn), lime (polymer) or a polymer flocculant, etc., the tertiary treatment facility is a physical treatment process and biological treatment process the third treatment It is desirable to be an apparatus for treating influent water entering the facility.

It is also an object of the present invention to utilize influent water and wastewater treatment devices including screen / settler, primary sedimentation basins, bioreactors, secondary sedimentation basins, and tertiary treatment facilities to provide influent water that exceeds the standard capacity of the sewage and wastewater treatment units. A method for treatment, the inflow water exceeding the standard capacity of the sewage and wastewater treatment apparatus of the inflow water flowing into the screen / immersion paper passes through the screen / immersion paper or the primary sedimentation basin and then bypassed to the tertiary treatment facility and by a first step of treating said excess influent by said tertiary treatment plant in a process for treating influent exceeding a reference capacity of said sewage and wastewater treatment apparatus. .

The method preferably further comprises a second step of introducing a flocculant into the excess influent water bypassing the tertiary treatment facility after passing through the screen / settling paper or the primary sedimentation basin.

The first step is a step of determining whether the flow rate flowing into the screen / settler has exceeded the reference capacity of the sewage and wastewater treatment apparatus, and if it is determined that the reference capacity in the determination step exceeded the reference capacity And bypassing the flow rate to the tertiary treatment facility, wherein the second step is to detect and compare the contamination concentration of excess inflow water bypassing the tertiary treatment facility to a predetermined criterion, and the comparison step. In the case where the concentration of the excess influent water exceeds a predetermined standard may include the step of introducing a flocculant to the excess influent.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments will now be described in detail with reference to the accompanying drawings as examples only.

Figure 2 shows an apparatus for treating influent water exceeding the reference capacity of the sewage and wastewater treatment apparatus according to an embodiment of the present invention.

As mentioned above, the existing sewage and wastewater treatment devices are operated in such a way that if the raw water flows in excess of the facility capacity, the excess influent can be discharged directly into the river without passing through the primary sedimentation basin or the primary sedimentation basin. Sewage pipes were collected with a lot of money and sewage was collected to sewage treatment plants. However, wastewater treatment facilities including sewage are designed based on the maximum daily inflow, so they are discharged without treating excessive sewage and wastewater during rainy weather. Therefore, there is a need to process the entire amount without bypassing such difficultly received raw water.

A characteristic of the present invention is that even if sewage and sewage are introduced into the screen / settled land exceeding the standard capacity (1Q) of the sewage and wastewater treatment device, the sewage exceeding the standard capacity is discharged to the stream or the like through a predetermined process without being discharged to the stream or the like. By detouring to a treatment facility, after complete treatment process, it is discharged to a river.

Hereinafter, an embodiment according to the present invention will be described with reference to FIG. 2. As shown in FIG. 2, according to an exemplary embodiment of the present invention, a tertiary treatment of raw water flowing over a treatment capacity 1Q may be performed instead of directly discharging the influent water having passed through a screen / settled paper or a primary sedimentation pond into a stream. Bypassing the facility to treat various contaminants included in the excess flow rate, the final discharge.

Here, the means for diverting the inflow water exceeding the treatment capacity from the screen / settling basin or primary sedimentation basin to the tertiary treatment facility can be easily configured through various valves and canisters.

In addition, as shown in FIG. 3, a first sensor 31 for detecting a flow rate flowing into the sewage and wastewater apparatus is mounted at an inlet of the sewage and wastewater treatment apparatus so that the flow rate flowing into the sewage and wastewater apparatus is processed. Receive such a signal from the first sensor 31 when the capacity 1Q is exceeded, causing the controller 33 to bypass the screen / settled or primary settling basin via the control lines 36, 37 to the tertiary treatment facility. It is also possible to automatically open the valve constituting the means and automatically close the valve again when receiving a signal from the first sensor 31 that the processing capacity has decreased below 1Q.

In this process, the treatment capacity (1Q) flowing into the screen / settlement is processed through the existing treatment method, and only influent water exceeding the treatment capacity (1Q) is bypassed and treated in the tertiary treatment facility.

It is also desirable to equip a particular portion of the means for bypassing the screen / settler or primary sedimentation basin to the tertiary treatment facility, as shown in FIG. 2. Means for administering the flocculant may be a container for containing the flocculant, a pipe connecting the vessel and the oil pipe forming the bypass means, and a valve installed in the pipe to inject the flocculant into the oil pipe forming the bypass means. Can be configured.

In addition, as shown in FIG. 3, a second sensor 32 for detecting the contamination concentration of the water quality bypassed by the bypass means to the tertiary treatment facility is installed in the pipe forming the bypass means and detected by the sensor. If the contamination concentration of the water quality exceeds a predetermined criterion, the controller 33 automatically opens the valve constituting the means 34 for administering the flocculant via the control line 35, and if the second sensor 32 The valve is closed through the control line 35 of the controller 33 when the contamination concentration of the water quality detected in the control unit does not exceed a predetermined standard, so that the water quality bypassed to the tertiary treatment facility is changed according to the contamination concentration. May be administered automatically.

In this way, if the flocculant is added to the inflow water bypassing the third treatment facility by exceeding the maximum treatment capacity 1Q by means of administering the flocculant can maximize the treatment efficiency. For example, the initial stormwater may contain harmful components such as SS, BOD, COD, N, P, as well as heavy metals and residual pesticides. Administration can effectively treat such harmful organic or inorganic matters. The flocculant may be a polymer flocculant or any one of polyalumium chloride (PAC), FeCl ₃ , alum and lime.

The tertiary treatment facility used in the apparatus according to the embodiment of the present invention may be a treatment facility that has been developed and used so far, and in particular, a physical treatment process, a chemical treatment process, a biological treatment process, or a physical, chemical, or biological treatment It is preferable to be comprised by the process which integrated the function.

However, physical processes using thin-screened or dense gaps, such as screens, sand filters, and strained filter papers, can easily handle particulate suspended solids (SS), but soluble organics such as SBOD and SCOD can be processed. There is a disadvantage that can not, and the chemical flocculation precipitation process can process up to some soluble material, but has a disadvantage of occupying a lot of site area.

Therefore, as mentioned above, a tertiary treatment facility that can be used in the device according to the invention is preferably an apparatus capable of treating a combination of one or more of physical, chemical and biological treatment functions. Among them, the tertiary treatment facility which can be used in the apparatus according to the present invention is the patent application No. 0441775 filed and registered by the applicant of the present invention, or the patent application No. 10-2004-0066229 filed by the applicant of the present invention The device disclosed in is preferred.

Referring to Figure 4 describes a method for treating influent water exceeding the reference capacity of the sewage and wastewater treatment apparatus according to an embodiment of the present invention.

Starting from step S1, it is determined whether the amount of raw water flowing into the screen / settling paper in step S2 exceeds the treatment capacity 1Q of the sewage and wastewater treatment apparatus. If it is determined that the inflow has not exceeded the reference capacity, the processing step returns to step S1, and if it is determined that the inflow has exceeded the reference capacity, step S2 is transferred to step S3 to exceed the treatment capacity. Is bypassed to the tertiary treatment facility.

Further, in step S4, the contamination concentration of the excess inflow amount bypassed in step S3 is compared with a predetermined criterion. If the contamination concentration does not exceed the predetermined criterion, the treatment step returns to step S3. If the contamination concentration exceeds the predetermined criterion, the treatment step transfers to step S5 and bypasses the tertiary treatment facility. The flocculant is administered at the excess inflow. Then, the processing step ends in step S6.

5 and 6 are experimental data showing the treatment results of influent water exceeding the treatment capacity 1Q according to the apparatus and method of the present invention. FIG. 5 is experimental data for twice the processing capacity (2Q), and FIG. 6 is experimental data for three times the processing capacity (3Q).

The inventors of the present invention were able to clearly confirm the effect of water quality improvement on the treated water exceeding 1Q, unlike the existing treatment method through the experimental data.

So far, a preferred embodiment of the present invention has been described. However, the preferred embodiments described so far should only be taken as examples. That is, those skilled in the art to which the present invention pertains will be able to derive various modifications with reference to the preferred embodiment of the present invention. Accordingly, the technical scope of the present invention should be interpreted only by the appended claims.

The present invention treats the inflow water exceeding the standard capacity of the treatment device by using the existing sewage and wastewater treatment device, in particular during the rainy weather while performing the third treatment function in Cheoncheon by the existing sewage and wastewater treatment device There is an effect such as treating sewage and wastewater introduced in excess of facility capacity.

Claims (12)

An apparatus for treating influent water exceeding a standard capacity of the sewage and wastewater treatment apparatus by using sewage and wastewater treatment apparatus including a screen / settler, a primary sedimentation basin, a bioreactor, a secondary sedimentation basin, and a tertiary treatment facility, And means for bypassing the inflow water exceeding the standard capacity of the sewage and wastewater treatment apparatus among the inflow water flowing into the screen / sedimentation basin after passing through the screen / sedimentation basin or the primary sedimentation basin to the tertiary treatment facility. , Characterized in that the excess influent water bypassed by the bypass means to the tertiary treatment facility is treated in the tertiary treatment facility, Apparatus for treating influent water exceeding the reference capacity of sewage and wastewater treatment devices. 2. The method of claim 1, further comprising means for introducing a flocculant into said excess influent that is bypassed to said tertiary treatment facility by said bypass means after passing through said screen / settling paper or said primary settler. , Apparatus for treating influent water exceeding the reference capacity of sewage and wastewater treatment devices. 3. The apparatus of claim 2, further comprising: a first sensor connected to the inlet of the screen / sedimentation paper and detecting a flow rate flowing into the screen / sedimentation paper, and a controller connected to the first sensor. When receiving a signal indicating that the flow rate entering the screen / settler has exceeded the reference capacity of the sewage and wastewater treatment device, the controller controls to open the valve constituting the bypass means to control the reference capacity of the sewage and wastewater treatment device. Apparatus for treating inflow water in excess of the reference capacity of the sewage and wastewater treatment apparatus, characterized in that for flowing the excess flow rate to the tertiary treatment facility. 4. The second sensor of claim 3, further comprising: a second sensor connected to the controller, the second sensor connected to an oil pipe constituting the bypassing means and detecting a contamination concentration of excess inflow water passing through the oil pipe. When receiving a signal from the sensor that the contamination concentration of the excess influent exceeded a predetermined criterion, the controller controls the valve constituting the flocculant input means to administer a flocculant to the excess influent, sewage and Apparatus for treating influent water exceeding the reference capacity of the wastewater treatment apparatus. 5. The sewage of claim 1, wherein the flocculant is any one of polyalumium chloride (PAC), FeCl ₃ , alum, lime, or a polymer flocculant. Apparatus for treating influent water exceeding the reference capacity of the wastewater treatment apparatus. The sewage and wastewater according to any one of claims 1 to 4, wherein the tertiary treatment facility is a device for treating inflow water flowing into the tertiary treatment facility by a physical treatment process and a biological treatment process. Apparatus for treating influent above the reference capacity of the treatment apparatus. A sewage and wastewater treatment device comprising a screen / settler, a primary sedimentation basin, a bioreactor, a secondary sedimentation basin, and a tertiary treatment facility, the method for treating influent water exceeding a standard capacity of the sewage and wastewater treatment device, The inflow water exceeding the standard capacity of the sewage and wastewater treatment apparatus among the inflow water flowing into the screen / settling paper passes through the screen / settling paper or the first sedimentation basin and then is bypassed to the tertiary treatment facility. Characterized in that the first step of treating the excess influent in the tertiary treatment facility, Method for treating influent water exceeding the reference capacity of sewage and wastewater treatment devices. 6. The method of claim 5, further comprising a second step of introducing a flocculant into said excess influent that bypasses said screen / sedimentation basin or said primary sedimentation basin and then bypasses said tertiary treatment facility. A method for treating influent water exceeding the reference capacity of the sewage and wastewater treatment apparatus. The method of claim 8, wherein the first step includes determining whether the flow rate flowing into the screen / settled paper exceeds a reference capacity of the sewage and wastewater treatment apparatus, and when determining that the reference capacity is exceeded. And diverting the flow rate exceeding the reference capacity to the tertiary treatment facility. The method as claimed in claim 8, wherein the second step includes detecting and comparing a contamination level of excess inflow water bypassed to the tertiary treatment facility with a predetermined standard; Injecting a flocculant to the excess influent if exceeded, characterized in that the method for treating influent exceeding the reference capacity of the sewage and wastewater treatment apparatus. The sewage of claim 7, wherein the flocculant is any one of polyalumium chloride (PAC), FeCl ₃ , alum, lime, or a polymer flocculant. A method for treating influent water exceeding a reference capacity of a wastewater treatment device. The sewage treatment system according to any one of claims 7 to 10, wherein the tertiary treatment facility is a device for treating inflow water flowing into the tertiary treatment facility by a physical treatment process and a biological treatment process. A method for treating influent water exceeding a reference capacity of a wastewater treatment device.

Images