WO2017086701A1

WO2017086701A1 - Carrier recovery-type automated water treatment method

Info

Publication number: WO2017086701A1
Application number: PCT/KR2016/013231
Authority: WO
Inventors: 강영현; 황필기
Original assignee: 강영현
Priority date: 2015-11-18
Filing date: 2016-11-16
Publication date: 2017-05-26

Abstract

A carrier recovery-type automated water treatment method of the present invention has advantageous effects in that economical and logical process configurations can be achieved and operation costs such as labor and chemical costs can be optimized through an automated water treatment process in which an operation is automatically controlled by selectively performing the operation in a first operation mode or in a second operation mode according to the properties of influent polluted water and the target water quality of effluent water, wherein the first operation mode includes: a flow rate regulation step; an influent water quality measurement step; a chemical treatment step; a filtration step; an effluent treatment step; and an effluent water quality measurement step, and the second operation mode includes: a flow rate regulation step; an influent water quality measurement step; a chemical treatment step; a precipitation step; a recovery step; a filtration step; an effluent treatment step; and an effluent water quality measurement step.

Description

Weighted media recovery automated water treatment method

The present invention relates to an automated water treatment method for recovering weighted media, and more specifically, to have a different treatment mode of water treatment process according to the characteristics of the influent and the use of the treated water, and to recycle the weighted media. The present invention relates to a weighted media recovery type automated water treatment method that can optimize the miniaturization of facilities and the amount of chemicals used through process automation.

As is well known, flocculation and sedimentation facilities used in conventional water treatment apparatuses have been operated as manually operated facilities due to the increase in installation costs, operating costs and technical difficulties of most facilities.

In particular, if the influent load fluctuates severely, the site has responded to the operation of the equipment by manual operation.In addition, the overdesign of the flocculation-sedimentation process increases the construction cost and requires more installation sites. As the amount of sludge generated due to use and the discharged water quality standards are not satisfied, there is still room for secondary water pollution. Therefore, it is urgent to make stable and uncomplicated facility automation.

{Prior art technical literature}

{Patent Literature}

(Patent Document 1) Republic of Korea Patent Publication No. 10-1398996 (Registration Date May 19, 2014)

(Patent Document 2) Korean Unexamined Patent Publication No. 2009-0098910 (published date September 17, 2009)

(Patent Document 3) Korean Unexamined Patent Publication No. 2002-0075479 (Publication date October 05, 2002)

An object of the present invention for solving the above problems is to go through the water treatment process through the operation mode selected according to the physicochemical characteristics of the influent and the use of the treated water and to recycle the weighted media during the operation of the water treatment process It is to provide a weighted media recovery automated water treatment method that can realize the automation to optimize the miniaturization of the plant and the amount of water treatment chemicals.

According to the weighted media recovery type automated water treatment method of the present invention for achieving the above object, the flow rate adjusting step of adjusting the flow rate and concentration of the incoming contaminated water; An inflow water quality measuring step of measuring the water quality of the contaminated water introduced by adjusting the flow rate; A chemical treatment step using a neutralizing agent, a coagulant, a weighting medium and / or a flocculant depending on the contaminated water property; A precipitation treatment step of solid-liquid separation by precipitating flocs flocculated in the contaminated water; A recovery treatment step of reusably recovering the weighted media from the sludge sediment separated in the precipitation treatment step; A filtration treatment step of filtering the chemical treatment or the precipitated treated water; A discharge treatment step of discharging the filtered filtered water; Discharge water quality measuring step of measuring the water quality of the discharged water discharged; And the inflow water quality measurement step, the chemical treatment step, the filtration treatment step, the discharge water quality measurement step, and the discharge treatment after the flow rate adjustment step according to the characteristics of the incoming contaminated water and / or the reuse of the discharged treated water. A first operation mode for treating water through the step, or a second operation mode for treating water through the inflow water quality measurement step, the chemical treatment step, the precipitation treatment step, the recovery treatment step, the filtration treatment step, the discharge water quality measurement step, and the discharge treatment step. Operation mode selection step of controlling the operation; characterized in that consisting of.

Here, in the operation mode selection step, the turbidity (SS) of the influent polluted water measured by the first turbidity (SS) meter, the Chl-a concentration of the influent polluted water measured by the first Chl-a meter and / or the It is preferable to selectively control the operation in the first operation mode or the second operation mode according to the reuse application criteria of the effluent.

In addition, in the flow rate adjusting step, the polluted water is introduced by operating an inflow pump below a predetermined water level through a first water level meter installed in the flow rate adjusting tank to stop the operation of the facility by blocking the inflow of the polluted water in an emergency. It is desirable to control operation.

In addition, the chemical treatment step may include a first chemical treatment step including a neutralizing agent input step, a coagulant input step and a flocculant input step in the first operation mode; And a second chemical treatment step including a neutralizing agent input step, a coagulant input step, a weighted filter input step, and a coagulant input step in the second operation mode.

In addition, the neutralizing agent in the first chemical treatment step and the second chemical treatment step is introduced into the neutralization tank according to the pH value of the contaminated water supplied from the flow rate adjustment tank into the neutralization tank by the first pH meter, the coagulant And the flocculant is based on the turbidity (SS) of the incoming contaminated water measured by the first turbidity (SS) meter, the Chl-a concentration measured by the first Chl-a meter and / or the reuse application criteria of the effluent water. According to each of the reaction tanks, the neutralizer input step, the coagulant input step and the flocculant input step of the neutralizer, the coagulant, the flocculant and the input time of the coagulation agent to control the operation by adjusting the RPM of the chemical supply pump It is preferable.

In addition, in the second chemical treatment step, the weighted filter medium is preferably added in proportion to the flow rate of the contaminated water flowing into the first reaction tank from the neutralization tank through the weighted filter input step.

In addition, the weighted filter material supplied to the first reaction tank through the weighted filter filling tank in the weighted filter input step, and / or the weighted filter material selectively recovered in the weighted filter recovery supply tank through the recovery processing step It is preferable to return to a 1st reactor and to reuse.

In addition, a weighted filter filling step for replenishing the weighted filter medium lost in the weighted filter recovery supply tank through the weighted filter filling tank may be further included.

In addition, in the recovery processing step, the weighted media recovery supply tanks are installed under the settling tank lower than the first reaction tank, and are operated to be supplied by pressurized conveying into the first reaction tank, or the weighted media recovery supply tanks are supplied. 1 It is preferable to install on the upper side of the reactor and supply by natural flow method.

In addition, the weighting medium used in the weighting agent injection step (Carrier) is preferably made of any one or more mixtures selected from the group containing alumina (Aluminium oxide) or garnet (Garnet) having a particle size of 40 ~ 150㎛.

In addition, the neutralizing agent, the coagulant and the flocculant in the chemical treatment step is preferably supplied by diluting through one or more chemical dilution tanks installed on the chemical supply pipe connecting the respective drug stock solution tanks.

In addition, the sedimentation treatment step and the recovery treatment step are operated and controlled at predetermined time intervals, respectively, in the recovery treatment step by alternately operating at least two or more weighted media recovery supply tank to desorb the weighted media from the sludge sediments It is preferable to control the operation to recover the weighted filter screened and recovered in the weighted media recovery supply tanks intermittently or / and continuously.

In addition, the filtration treatment step may include a first filtration treatment step of selectively filtering through a first filter selectively according to the properties of the treated water supplied to the first filtration water tank; And a second filtration treatment step of performing secondary filtration through an advanced oxidation tank, a second filtration water tank, a second filtration tank, and a chlorine injector after the first filtration through the first filtration unit.

In addition, the filtration treatment selection step of selecting the first filtration treatment step or the second filtration treatment step before the filtration treatment step; further comprising, in the filtration treatment selection step of the treated water flowing into the first filtration tank According to the properties, the operation can be controlled to select the first filtration step or the second filtration step.

In addition, the discharge water according to the turbidity (SS) of the effluent measured by the second turbidity (SS) measuring device installed in the discharge tank inlet pipe in the discharge treatment step and the pH of the effluent measured by the second pH measuring device It may further include a discharge water conveyance step to be returned to the flow rate adjustment tank to undergo a reprocessing process.

In addition, the entire water treatment process preferably includes starting and stopping through a PCB or / and PLC program for automation.

According to the weighted filter recovery type automated water treatment method of the present invention, the flow rate adjustment step, inflow water quality measurement step, chemical treatment step, filtration selectively depending on the incoming water quality (turbidity (SS), etc.) and the discharge water target water quality First operation mode consisting of treatment step, discharge treatment step, discharge water quality measurement step, flow rate adjustment step, influent water quality measurement step, chemical treatment step, precipitation treatment step, recovery treatment step, filtration treatment step, discharge treatment step and discharge water quality Through the water treatment process automation that automatically controls the operation of the second operation mode consisting of the measuring step, it is possible to realize an economical and reasonable process configuration, and to optimize the operating cost such as labor cost and chemical cost.

In addition, according to the weighted media recovery type automated water treatment method of the present invention, the first operation mode is relatively compared to the target water quality by omitting the weighted media input process, precipitation treatment step and recovery treatment step of the chemical treatment step compared to the second operation mode Economical operation can be performed because it is compact and there is no need for additional equipment, and the second operation mode includes a weighted filter input process, a sedimentation treatment step and a recovery treatment step as compared to the first operation mode. It can catch and have high water treatment efficiency.

In addition, according to the weighted media recovery type automated water treatment method of the present invention, the amount of neutralizing agent, coagulant and flocculant used in the chemical treatment step, the amount of the weighted media used and the recycle feed amount to automatically control through the PCB or / and PLC program By optimizing the amount of chemicals used in the process, it not only prevents secondary pollution due to overuse of the drug, but also minimizes sludge generation.

In addition, according to the weighted media recovery type automated water treatment method of the present invention, the weighted media used through the weighted media recovery unit at the same time using a single or mixed weighted media of the alumina oxide (Aluminium oxide) or garnet series (Garnet) series By automating the process of separating and sorting and then reusing, it has the effect of reducing the water treatment time and operating cost through high-speed aggregation and precipitation through the weighted media.

1 is a flow chart showing a weighted media recovery automated water treatment method according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing a weighted media recovery automated water treatment apparatus for implementing the weighted media recovery automated water treatment process of FIG.

FIG. 3 is a schematic diagram illustrating an apparatus for recovering weighted media used in the first operation mode of FIG. 2.

FIG. 4 is a schematic view showing a heavy material recovery type automated water treatment apparatus used in the second operation mode of FIG. 2.

FIG. 5 is a schematic view showing a modification of the weighted media recovery type automated water treatment apparatus of FIG. 1.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like elements throughout the specification.

Referring to Figures 1, 2 and 3, the weighted media recovery type automatic water treatment method of the present invention flow rate adjustment step (ST10), inflow water quality in such a way that is automatically switched through an electrical signal through the operation control unit 110 Measurement step (ST20), operation mode selection step (ST30), chemical treatment step (ST40), precipitation treatment step (ST50), recovery treatment step (ST60), filtration treatment selection step (ST70), filtration treatment step 75, The water treatment is performed through the discharge treatment step ST80, the discharge water quality measurement step ST90, and the discharge water transport step ST100.

In particular, in the operation mode selection step (ST30), it is automatically controlled to be operated in the first operation mode or the second operation mode selectively according to the properties of the contaminated water and the discharge water target water quality.

Here, in the first operation mode, the inflow water quality measurement step (ST20), the chemical treatment step (ST40), the filtration treatment selection step (ST70), the filtration treatment step (ST75), and the discharge treatment step after the flow rate adjusting step (ST10). (ST80), the discharge water quality measurement step (ST90), and the discharge water transport step (ST100) to perform water treatment for the contaminated water having a relatively low pollution level.

In the second operation mode, after the flow rate adjustment step ST10, the inflow water quality measurement step ST20, the chemical treatment step ST40, the precipitation treatment step ST50, the recovery treatment step ST60, and the filtration process selection step are performed. (ST70), the filtration treatment step (ST75), the discharge treatment step (ST80), and the discharge water quality measurement step (ST90), so that the water treatment for the contaminated water with a relatively high degree of pollution is performed in comparison with the first operation mode.

Referring to Figure 2, the weighted media recovery type automatic water treatment apparatus of this embodiment is largely the flow rate adjusting unit 10, inflow water quality measurement unit 20, chemical treatment unit 30, sedimentation treatment unit 40, recovery treatment unit 50 ), The filtration treatment unit 60, the discharge treatment unit 70, the discharge water quality measuring unit 80, the discharge water conveying unit 90, the concentration tank 100 and the operation control unit 110 can be configured.

Here, the flow rate adjusting unit 10 to adjust the flow rate of the treated contaminated water through the flow rate adjustment tank (11). On the other hand, in the flow regulating tank 11, the 1st water level gauge 13 for measuring the level of the contaminated water which flows into the flow regulating tank 11 is provided.

Inflow water quality measurement unit 20 is a first pH meter 14 for measuring the pH concentration of the contaminated water flowing into the flow adjustment tank 11, the first turbidity (SS) for measuring the suspended solids (SS) Meter 15 may be configured to include a first Chl-a meter 16 for measuring the Chl-a concentration.

In the present embodiment, the first pH measuring unit 14, the first turbidity (SS) measuring unit 15, and the first Chl-a measuring unit constituting the inflow water quality measuring unit 20 are contaminated in the flow regulating tank 11. Illustrates installation on the water discharge side.

However, the present invention is not necessarily limited thereto, and as long as the pH concentration, turbidity (SS), and Chl-a concentration of the contaminated water flowing into the flow regulating tank 11 can be measured, the first pH meter 14 described above. Of course, the first turbidity (SS) measuring unit 15 and the first Chl-a measuring unit 16 may be installed in the flow control tank 11 or on the contaminated water transfer pipes connecting the flow control tank 11. Do.

The chemical treatment unit 30 is neutralized by mixing the neutralizing agent, the coagulant, the flocculant and / or the weighting media according to the properties of the contaminated water introduced through the neutralization tank 31, the first reaction vessel 32, and the second reaction vessel 33. Make the flocculation and precipitation process more effective.

Here, the chemical stock solutions (31a, 32a, 33a) for supplying a neutralizing agent, a coagulant and a flocculant on the neutralization tank 31, the first reaction tank 32 and the second reaction tank 33, respectively, are installed, On the chemical supply pipe connecting the

stock tanks

31a, 32a, and 33a, the neutralizing agent, the coagulant and the flocculant stock solution are diluted and supplied to the neutralization tank 31, the first reactor 32, and the second reactor 33, respectively. Supply pumps 31b, 32b, 33b and

chemical dilution tanks

31e, 32e, 33e.

In this embodiment, the drug

stock solution tanks

31a, 32a, and 33a, the

drug supply pumps

31b, 32b, and 33b and the

drug dilution tanks

31e, 32e, and 33e for supplying drugs are respectively applied to the chemical treatment unit 30. Although illustrated above the neutralization tank 31, the first reaction tank 32 and the second reaction tank 33 constituting the), the present invention is not necessarily limited thereto, the drug stock solution tanks (31a, 32a, 33a), the

chemical supply pumps

31b, 32b, 33b and the

chemical dilution tanks

31e, 32e, 33e are respectively located around the neutralization tank 31, the first reactor 32 and the second reactor 33. Of course, it can be arranged in various forms on one side.

Of course, when supplied to the drug dilution tank (31e, 32e, 33e) from the drug stock solution tank (31a, 32a, 33a), and each of the tanks constituting the drug processing unit 30 in the drug dilution tank (31e, 32e, 33e) The pipes and pumps may or may not be configured independently. In addition, the drug dilution tank (31e, 32e, 33e) may be composed of one or more depending on the case.

The precipitation treatment unit 40 separates the sludge precipitate and the supernatant aggregated in the contaminated water through the settling tank 41.

The recovery processing unit 50 is configured to include two weighted filter

recovery supply tanks

51 and 52 and one weighted filter filler tank 54, and the settling tank ( In 41), the weighted filter medium is reusably sorted and recovered from the sludge sediment separated from the sediment, and the weighted filter medium is replenished through the weighted filter filler tank 53.

In the present embodiment, the recovery processing unit 50 only illustrates that the two weighted media

recovery supply tanks

51 and 52 and one weighted media filling tank 54, but the operating environment of the weighted media recovery automated water treatment device As a matter of course, by adding or subtracting the number of the weighted media

recovery supply tanks

51 and 52 and the weighted media filling tank 54 constituting the recovery processing unit 50 can be applied in various forms.

The filtration unit 60 includes a first filtrate 61, a first filter 62, a photocatalytic oxidation tank 636, a second filtrate 64, a second filter 65, and a chlorine injector 66. It is configured to filter the incoming contaminated water.

That is, in this embodiment, the filtration unit 60 is composed of a primary filtration unit 60a and a secondary filtration unit 60b, the primary filtration unit 60, the first filtration tank 61, the first filter 62 The secondary filtration treatment unit is configured to include an advanced oxidizing tank 63, a second filtering water tank 64, a second filter 65, and a chlorine injector 66 to filter, oxidize, and disinfect contaminated water. Sterilize.

Depending on the discharged water target water quality, it is possible to configure and operate the primary filtration unit 60a alone or the secondary filtration unit 60b in succession.

The discharge treatment unit 70 stores the filtered water filtered by the filtration unit 60 through the discharge tank 71 and stores the discharged water.

The discharge water quality measuring unit 80 measures the quality of the discharge water discharged through the discharge tank 71.

In the present embodiment, the discharge water quality measuring unit 80 measures the pH of the discharge water installed in the discharge tank 71, the second pH meter 73 and the second turbidity SS measuring the turbidity SS of the discharge water. Illustrates the configuration including the measuring device 72.

The discharge water transport unit 90 is configured to include a discharge water transport pipe 75 and a discharge water transport pump 74 provided on the discharge water transport pipe 75 to connect the discharge tank 71 and the flow rate adjustment tank 11, If the discharged water does not meet the discharge standard, it is returned to the flow adjusting tank 11 to undergo a reprocessing process.

In addition, the operation controller 110 may be configured to automatically start, stop, and control the operation of the weighted media recovery type automatic water treatment device through an electrical signal of a PCB or / and a PLC program according to the water treatment procedures described below. .

Referring to Figure 1 again, in the above-described flow rate adjustment step (ST10) of the weighted media recovery type automated water treatment method through the flow control section 11 forming the flow rate adjustment unit 10 and the treated flow rate and concentration of the contaminated water Adjust evenly.

That is, by operating the inflow pump 12 at a predetermined level or more through the first water level meter 13 installed in the flow rate adjustment tank 11 to introduce the contaminated water, but stop the process if the inflow of the contaminated water is below a certain level. In case of more than that, it operates to send raw water to the neutralization tank 31 which will be described later.

In the inflow water quality measurement step (ST20), the inflow water quality measurement unit 20 measures the pH, turbidity (SS), and Chl-a concentration of incoming contaminated water in real time to adjust the amount of chemicals introduced in a continuous chemical treatment step. Use as an indicator to

At this time, when the inflow rate of the contaminated water during the operation of all processes is small or emergency operation, the operation control to stop the operation of the facility by automatically stopping the operation of the inflow pump 12.

On the other hand, the operation mode selection step (ST30) is the turbidity (SS) of the influent polluted water measured by the first turbidity (SS) measuring device 15, the influent contamination measured by the first Chl-a measuring device (16) The first operating mode or the second operating mode is automatically selected and performed according to the Chl-a concentration of water and / or the reuse criteria of the discharged water.

Here, the Chl-a concentration measured by the first Chl-a measuring device 16 may be used as an indicator to detect and process green algae concentrated in the summer, and may be installed and operated when necessary throughout the year.

First, after the operation mode selection step (ST30), the chemical treatment step (ST40), the filtration process selection step (ST70), the filtration treatment step (ST75), the discharge water quality measurement step (ST90), and the discharge water according to the first operation mode. Referring to the water treatment process through the conveying step (ST100) as follows.

FIG. 3 is a schematic view showing a heavy material recovery type automated water treatment apparatus used in the first operation mode of FIG. 2.

Referring to FIG. 3 together with FIG. 2, the chemical treatment step according to the first operation mode may include a first chemical treatment including a neutralizer addition step (ST42), a coagulant injection step (ST43), and a coagulant injection step (ST44). This is done via step ST41.

In the neutralizing agent input step (ST42), the neutralizing agent is supplied according to the pH value of the contaminated water supplied from the flow adjusting tank 11 into the neutralizing tank 31 by the first pH measuring device 14 installed at one side of the flow adjusting tank 11. To neutralize.

At this time, the first pH measuring device 14 first determines whether the chemical to be used as a neutralizer is alkaline or acidic by measuring the pH value of the introduced contaminated water.

In addition, the amount of neutralizing agent is programmed according to the result of the first pH measuring device 14 and is realized according to a predetermined condition value, and the amount of neutralizing agent is realized by adjusting the RPM of the chemical supply pump 31b inverter. .

Here, the neutralizing agent exemplifies that sulfuric acid (H 2 SO 4) and slaked lime (Ca (OH) 2) are used, and the neutralizing agent neutralizes or subsequent to the water quality of the effluent depending on the degree of contamination of the introduced contaminated water. It is used to speed up the reaction rate of additional chemicals introduced through the chemicals, thereby reducing the operating cost of water treatment by reducing the amount of additional chemicals used afterwards, and also preventing secondary pollution caused by them. .

On the other hand, the neutralizing agent input step (ST41) can be omitted within a range that does not contradict the normalized process operation and target water quality conditions.

In the coagulant injection step (ST42), the turbidity (SS) of the influent polluted water measured by the first turbidity (SS) meter 15 and the Chl-a of the influent polluted water measured by the first Chl-a meter 16 are measured. According to the concentration and / or the reuse application criteria of the effluent, a predetermined amount of a coagulant is introduced into the first chemical treatment water supplied from the neutralization tank in the first reactor 32 to condense fine particles to fine floc. Form them.

In the present embodiment, the coagulant used in the coagulant injection step (ST43) is polyaluminum chloride (PAC), aluminum sulfate (Al ₂ (SO ₄ ) 3, Alum), ferric chloride (Fe ₂ (SO ₄ ) 3), Although ferrous chloride (FeCl ₃ ) is mainly used, various types of coagulants may be applied depending on the properties of contaminated water flowing into the first reactor 32.

Here, the input amount of the coagulant to be injected into the first reactor 32 is programmed and adjusted by adjusting the RPM of the coagulant feed pump 32b to inject the coagulant into the first reactor 33 according to a predetermined condition value. Adjust

In addition, in the coagulant input step ST43, the turbidity (SS) of the influent polluted water measured through the first turbidity (SS) meter 15 and the Chl of the influent polluted water measured through the first Chl-a meter 16 are measured. a fine floc formed by introducing a predetermined amount of flocculant into the second chemical treatment water supplied from the first reaction tank 32 in the second reaction tank 33 according to the concentration and / or the reuse application criteria of the effluent water; floc) to agglomerate larger.

In the coagulant input step (ST43) of the present embodiment, as the coagulant introduced into the second reactor 33, a polymer (Polymer, Polyacrylamide (PAM), Polyacrylic acid), sodium alginate, bentonite (Bentonite) is used. For example, various types of flocculants may be used depending on the properties of the contaminated water flowing into the second reactor 33.

Here, the amount of flocculant introduced into the second reactor 33 is influenced by the results of the first turbidity (SS) measuring device 15 and the first Chl-a measuring device 16 measured at the time of inflow, and the program setting (Program) The coagulant supply amount and the supply time according to the result preset by the setting) are controlled by adjusting the RPM of the coagulant feed pump 33b.

In the filtration treatment step ST75, subsequent filtration treatments are performed after the first chemical treatment step ST40 of the first operation mode.

On the other hand, according to the turbidity (SS) of the treated water supplied to the first filtration water tank 61 before the filtration treatment step (ST75) selectively to the first filtration treatment step (ST76) or the second filtration treatment step (ST77) Through the filtration process selection step (ST70) to control the operation.

In the first filtration step (ST76), the primary filtration through the first filtration tank 61, the first filter 62 and the chlorine injector, and in the second filtration step (ST77) the first filtration tank After the first filtration through the 61 and the first filter 62, and continuously through the advanced oxidation tank 63, the second filtration water tank 64, the second filter 65 and the chlorine injector 66 Car filtration should be performed.

Here, in the case of the first filtration step (ST76) is used for the simple filtration of contaminants through the first filter 62, in the case of the second filtration step (ST77), the effluent standard is very low, or dissolved organic matter Oxidation removal, heavy metal removal or the advanced treatment process for oxidizing and disinfecting the supernatant flowing out of the settling tank 41 to the discharge tank 71 to perform.

On the other hand, the chlorine injector 66 commonly used in the first filtration step (ST76) and the second filtration step (ST77) may be carried out before the discharge step, but when the algae generated during the year, the inflow It can also be used to effectively treat algae by introducing into the inlet pipe where the pump 12 is located.

Here, the chlorine used in the chlorine injector 66 exemplifies the use of chlorine chemicals such as Cl 2, ClO 2, sodium hypochlorite, chlorokalky and the like.

In the discharge treatment step ST80, the first filtered filtration water through the first filtration step ST76 or the second filtered filtration water through the second filtration step ST77 is discharged to the discharge tank 71. ) To be discharged.

On the other hand, before the discharge treatment step (ST80) to the second turbidity (SS) measuring device 72 and the second pH measuring device 73 installed in the discharge tank 71 through the discharge water quality measuring step (ST80). Measure the turbidity (SS) and pH of the effluent discharged through the discharge vessel.

At this time, if the measured turbidity (SS) and pH value of the discharged water does not meet the treatment water (discharged water) reuse standard, the treated water is returned to the flow rate adjusting tank 11 to carry out the reprocessing process (ST100). Take it through.

At this time, the discharged water is conveyed to the flow rate adjustment tank through the discharge water conveying pump 74 and the discharge water conveying pipe (75).

Then, the chemical treatment step (ST40), the precipitation treatment step (ST50), the recovery treatment step (ST60), the filtration treatment selection step (ST70), the filtration treatment step (ST75), and the discharge treatment step (ST80) according to the second operation mode. Water treatment process through the discharge water quality measurement step (ST90) will be described with reference to FIG. Here, redundant description of the same and similar water treatment process as the first operation mode will be omitted.

4 is a schematic view showing a weighted media recovery type automatic water treatment apparatus used in the second operation mode of FIG. 2, and FIG. 5 is a schematic view showing a modification of the weighted media collection type automated water treatment apparatus of FIG.

First, referring to FIG. 2 together with FIG. 4, after the above-described flow rate adjustment step ST10 and inflow water quality measurement step ST20, the chemical treatment step according to the second operation mode may include a neutralizer injection step ST42, It consists of a coagulant injection step (ST43), a weighted filter injection step (ST46) and a coagulant injection step (ST44) and a second chemical treatment step (ST45).

Here, the neutralizing agent input step (ST42), the coagulant input step (ST43) and the coagulant input step (ST44) except for the weighted filter medium input step (ST46) of the second chemical treatment step (ST45) is the first drug treatment step (ST41) Same as in

On the other hand, the weighted filter input step (ST46) may be made at the same time as the coagulant input step (ST43) described above through the first reactor (32).

In the weighted filter input step (ST46), the weighted filter material supplied to the first reaction tank is directly replenished through the weighted filter filling tank 53 of the recovery processing unit, or the weighted filter recovery supply tank 51 through the recovery processing step (ST60) described later. , 52) are sent back to the first reactor (32) to enable recycling.

On the other hand, the weighting medium feed pump provided on the weighted medium recovery pipe 55 connected to the weighted medium recovery supply tank (51, 52) is the supply amount of the weighted medium supplemented directly or indirectly to the first reaction tank (32) 54) can be controlled by operation control or by connecting pipes independently to the weighted media

recovery supply tanks

51 and 52 and the weighted media filling tank 53 to control the attached transfer pump and the automatic valve. Here, it is preferable to control the amount of weighting material to be introduced in proportion to the flow rate of the incoming contaminated water.

As such, in the weighted filter input step (ST46), the weighted media is mixed with the coagulant necessary in the water treatment process of the contaminated water introduced into the first reactor 32 to increase the speed and efficiency of the water treatment through the high-speed flocculation and precipitation process. .

Here, the weighting medium (Carrier) is preferably made of any one or more mixtures selected from the group containing alumina oxide (Aluminium oxide) or garnet (Garnet).

That is, the weighting media is alumina oxide (Aluminium oxide) or alumina oxide (Aluminium oxide) -based weighting media including the same or garnet or a weighting media of the garnet series including the same, either alone or according to the site conditions It can be used in a composite configuration in which these are mixed.

Alumina oxide-based weighting media are generally composed of more than 70% by weight of Al ₂ O ₃ , and other Fe ₂ O ₃ , TiO ₂ , SiO ₂ , CaO, ZrO ₂ , Na ₂ O, MgO and the like. Here, the alumina oxide-based weighting media may be distinguished by various colors depending on the difference in Al ₂ O ₃ content.

Here, the alumina oxide-based weighting medium uses an aluminum oxide having a Mohs hardness of 6 to 8 and a specific gravity of 3.2 to 4.2 g / ml, but the content of alumina oxide is 75.0 to 99.6%. do.

Garnet-based weighting media is mainly used for abrasives or cutting garnets having a Mohs hardness of 5 to 8, specific gravity of 3.2 to 4.2 g / ml, and other Al ₂ O ₃ The content of 8 to 12% by weight, the content of Fe ₂ O ₃ is 10 to 25% by weight, the content of SiO ₂ is used 30 to 50%. The weighting medium used in the present embodiment is preferably formed to have a particle size of 40 ~ 150㎛.

Meanwhile, in the precipitation treatment step ST50 after the second chemical treatment step ST45, the sludge aggregated together with the weighted media in the third chemical treatment water introduced from the second reaction tank 33 through the precipitation tank 41 is precipitated. To be separated.

Weighted media recovery supply tank 51 of the recovery treatment unit 50 to perform the recovery treatment step (ST60) to be described later sedimentation sludge sediment aggregated to the lower side through the sedimentation tank 41 and separated from the supernatant on the upper side. , 52) and the supernatant is separated and discharged into the first filtered water tank 61 for the filtration treatment step ST70.

When the weighted media

recovery supply tanks

51 and 52 of the recovery treatment unit 50 for separating and discharging the sludge sediment from the sedimentation tank are located below the sedimentation tank, the sludge sediment is discharged in a natural flow manner, but the sludge sediment discharge pipe ( 42) to control the intermittent through the sludge precipitate discharge valve 43 is installed on.

Of course, as shown in Figure 5, depending on the site conditions, the weighted media recovery supply tank (51, 52) of the recovery processing unit 50 may be disposed above the first reaction tank higher than the settling tank, in this case sludge deposit discharge pipe ( It is naturally possible to control the discharge intermittently by using the sludge sediment transfer pump 44 on.

In the recovery processing step (ST60), the weighted medium is reusably selected and recovered from the sludge sediments intermittently separated from the settling tank 41 through the weighted medium

recovery supply tanks

51 and 52, and the weighted medium recovery and supply tank The weighted media collected in the 51 and 52 are recycled to the first reactor 32 through the weighted media transfer pump 54 provided on the weighted media transfer pipe 55.

Here, the weighted media recovery supply tanks (51, 52), as shown in Figure 4, is installed below the settling tank 41 lower than the first reaction tank 32 into the first reaction tank (32) Operation control to supply by pressurized transfer, or as shown in Figure 5, the weighted material recovery supply tank (51, 52) may be installed above the first reaction tank 32 to be supplied in a natural flow method. .

At this time, the weighted filter filling step (ST60a) for supplying the weighted filter medium lost through the weighted filter medium in the weighted filter recovery supply tank may be further included.

On the other hand, in the weighted filter filling step (ST60a), as described above, in addition to being directly charged and replenished through the weighted filter filling tank 53 at the beginning of operation, the weighted filter recovery supply through the above-mentioned recovery processing step (ST60) The weighted media recovered in the

tanks

51 and 52 are sent back into the first reactor to make up for the portion lost in the recycle process.

In the present embodiment, the precipitation treatment step (ST50) and the recovery treatment step (ST60) are exemplarily controlled to be operated at predetermined time intervals.

Therefore, in the recovery processing step ST60 of the present embodiment, the weighted media is removed by recovering the weighted media by alternately operating at least two or more weighted media

recovery supply tanks

51 and 52, or the weighted media filling tank ( 53) to control operation to replenish.

Here, the weighted media recovery supply tanks (51, 52) is basically operated in accordance with a predetermined timer (Timer) according to the operation of the settling tank 41, the weighted media recovery supply tanks (51, 52) ) Is operated by two or more tanks of the same condition, and the operation is controlled in such a way that the process of recovery and the process of input are cross-operated.

That is, the two weighted medium

recovery supply tanks

51 and 52 are alternately operated by a timer to recover the second weighted medium when the first weighted medium recovery supply tank 51 performs the weighted medium recovery process. The supply tank 52 is to carry out the weighted media conveyance process.

The recovery process of the weighted filter

recovery supply tanks

51 and 52 moves the sludge including the weighted filter medium from the settling tank 41. At this time, when the water level reaches a certain level, the inflow process is stopped and a predetermined time is generated by a timer. Weighting media and sludge by adjusting the rotational speed of the

sludge desorption stirrers

51a and 52a installed in the weighted media

recovery supply tanks

51 and 52, the amount of acid released by the sludge

desorption acid pipes

51b and 52b, and water supply. Desorption, and the desorbed sludge is discharged to the concentration tank 100 using the sludge discharge pump (101, 102) provided on the sludge discharge pipe connecting the weighted media recovery supply tanks (51, 52) to the concentration tank (100). . The sludge discharge pumps 101 and 102 may be installed and operated independently for each of the weighted media

recovery supply tanks

51, 52, and 56, and the sludge discharge pumps 101 or 102 may also be discharged using only one

sludge discharge pump

101 or 102.

Meanwhile, in the weighted medium

recovery supply tanks

51 and 52, the

sludge desorption stirrers

51a and 52a and / or the sludge

desorption acid pipes

51b and 52b are selectively installed according to the site conditions so that the stirring speed and / or acid Through capacity control, it is possible to increase the efficiency of sorting and recovering weighted media.

In addition, when a certain amount of the weighted media is filled in the weighted media

recovery supply tanks

51 and 52, the two weighted media

recovery supply tanks

51 and 52 are alternately operated by a timer and the weighted media transfer pump ( 54) is supplied to the first reaction tank 32 through the weighted media transfer pipe 55 is installed.

The weighted filter filling tank 53 for replenishing the amount of the weighted filter medium lost during the weighted filter recovery process is supplied to the first reaction tank 32 among the two weighted filter

recovery supply tanks

51 and 52. Operation control is made so that the

tank

51 or 52 is first replaced.

Meanwhile, in the weighting medium filling tank 53, a weighting medium stirrer 53a may be selectively installed in some cases. In this case, the weighting medium stored in the weighting medium filling tank 53 through the weighting medium stirrer 53a may be added. Prevent condensation from occurring.

In the weighted filter conveyance step (ST60b) after the recovery processing step (ST60), the weighted filter material that is selectively recovered and replenished in the weighted filter recovery supply tanks (51, 52) is provided with a weighted filter transport pump (54) Through the recovery pipe 55 to be supplied reusable to the first reaction tank (32).

Then, a series of filtration treatment selection steps (ST70), filtration treatment step (ST70), effluent quality measurement step (ST90), effluent treatment step (ST80) or effluent transport step (ST90) which is continuous after the second chemical treatment step (ST42) And the like are the same as in the first operation mode.

Therefore, according to the weighted media recovery type automated water treatment method of this embodiment, the flow rate adjustment step (ST10) and the inflow water quality measurement step (ST20) are selectively performed according to the incoming water quality (turbidity (SS), etc.) and the discharge water target water quality. First operation consisting of operation mode selection step (ST30), chemical treatment step (ST40), filtration treatment selection step (ST70), filtration treatment step (ST75), discharge treatment step (ST80), and discharge water quality measurement step (ST90) Mode, flow rate adjustment step (ST10), influent water quality measurement step (ST20), operation mode selection step (ST30), chemical treatment step (ST40), sedimentation treatment step (ST50), recovery treatment step (ST60), filtration process selection Economical and reasonable process configuration is realized through the automatic water treatment process automation, which automatically selects and controls the second operation mode consisting of the step ST70, the filtration treatment step ST75, the discharge treatment step ST80, and the discharge water quality measurement step ST90. It has the effect of optimizing the operating costs such as labor cost and chemical cost.

In addition, compared to the second operation mode when operating in the first operation mode, the weighted filter input process (ST46), the precipitation treatment step (ST50) and the recovery treatment step (ST60) are omitted in the chemical treatment step (ST40), the target water quality It is relatively economical and economical because there is no need for additional equipment. Compared to the first operation mode when the operation in the second operation mode includes a weighted filter input process, sedimentation treatment step and recovery treatment step to obtain a high effluent target water quality has the effect of obtaining a high water treatment efficiency.

In addition, the amount of neutralizer, coagulant and flocculant used in the chemical treatment step, the amount of weighted media used and recycle supply are automatically controlled through the PCB or / and PLC program to optimize the amount of chemicals used in the water treatment process. It not only prevents secondary contamination but also minimizes sludge production.

In addition, by using alone or mixed weighted media of alumina (Aluminium oxide) or garnet series (Garnet), and automating the process of separating and sorting the weighted media used through the weighted media recovery unit and reusing them, High-speed flocculation and sedimentation can reduce water treatment time and operating costs.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications or changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. In addition, it is natural that it belongs to the scope of the present invention.

{Description of the sign}

10: flow rate adjusting section 11: flow rate adjusting tank

12: inflow pump 13: first water gauge

14: first pH meter 15: first turbidity (SS) meter

16: first Chl-a measuring instrument 20: influent water quality measurement unit

30: chemical processing unit 31: neutralization tank

31a, 32a, 33a: chemical

stock solution tank

31b, 32b, 33b: chemical supply pump

31c, 32c, 33c:

Drug Mixer Agitator

31d, 32d, 33d: Drug Mixer

31e, 32e. 33e: chemical dilution tank 32: first reactor

33: second reactor 40: sedimentation treatment unit

41: sedimentation tank 42: sludge sediment discharge pipe

43: sludge precipitate discharge valve 44: sludge precipitate transfer pump

50: recovery processing unit 51, 52: weighted media recovery supply tank

51a, 52a:

sludge tally agitator

51b, 52b: sludge tally acid engine

53: weighted media filling tank 53a: weighted media stirrer

53b: weighted medium filling pipe 54: weighted medium feed pump

55: weighted filter feed pipe 60: filtration treatment unit

60a: primary filtration unit 60b: secondary filtration unit

61: first filter water tank 62: first filter

63: advanced oxidation tank 64: second filtered water tank

65: second filter 66: chlorine injector

70: discharge treatment unit 71: discharge tank

72: second turbidity (SS) meter 73: second pH meter

74: discharge water conveying pump 75: discharge water conveying piping

80: discharge water quality measuring unit 100: concentration tank

101, 102: sludge discharge pump 110: operation control unit

ST10: flow rate adjusting step ST20: influent water quality measuring step

ST30: operation mode selection step ST40: chemical treatment step

ST41: first chemical treatment step ST42: neutralizer injection step

ST43: Coagulant input step ST43: Coagulant input step

ST45: second chemical treatment step ST46: weighted medium injection step

ST50: precipitation treatment step ST60: recovery treatment step

ST60a: weighting filter filling step ST70: filtration treatment selection step

ST75: Filtration step ST76: First filtration step

ST77: second filtration step ST80: discharge treatment step

ST90: discharge water quality measurement step ST100: discharge water delivery step

Claims

A flow rate adjusting step of adjusting the flow rate and the concentration of the introduced contaminated water;

An inflow water quality measuring step of measuring the water quality of the contaminated water introduced by adjusting the flow rate;

A chemical treatment step of using a neutralizing agent, a coagulant, a weighting medium, and / or a coagulant according to the contaminated water property;

A precipitation treatment step of solid-liquid separation by precipitating flocs flocculated in the contaminated water;

A recovery treatment step of reusably recovering the weighted media from the sludge sediment separated in the precipitation treatment step;

A filtration treatment step of filtering the chemical treatment or the precipitated treated water;

A discharge treatment step of discharging the filtered filtered water;

Discharge water quality measuring step of measuring the water quality of the discharged water discharged;

The inflow water quality measurement step, the chemical treatment step, the filtration treatment step, the discharge water quality measurement step and the discharge treatment step after the flow rate adjustment step are selectively performed according to the properties of the introduced contaminated water and / or the reuse of the discharged treated water. Operation in a first operation mode for water treatment, or in a second operation mode for water treatment through the inflow water quality measurement step, the chemical treatment step, the precipitation treatment step, the recovery treatment step, the filtration treatment step, the discharge water quality measurement step, and the discharge treatment step. Weighted media recovery type automatic water treatment method comprising a; operation mode selection step of controlling.
In claim 1,

In the operation mode selection step,

Depending on the turbidity (SS) of the influent contaminant (SS) measured by the first turbidity (SS) meter, the Chl-a concentration of the influent contaminant measured by the first Chl-a meter and / or the reuse application criteria of the effluent,

And selectively controlling the operation in the first operation mode or the second operation mode.
In claim 1,

In the flow rate adjusting step,

While operating the inflow pump below a predetermined level through the first water level meter installed in the flow rate adjustment tank to introduce the contaminated water,

Weighted media recovery automated water treatment method for controlling the operation to stop the operation of the facility by blocking the inflow of contaminated water in an emergency.
In claim 2,

The chemical treatment step,

A first chemical treatment step including a neutralizer input step, a coagulant input step, and a coagulant input step in the first operation mode; And

The second chemical treatment step comprising a neutralizing agent input step, a coagulant input step, a weighted filter input step and a coagulant input step in the second operation mode; weighted media recovery type automatic water treatment method comprising a.
In claim 4,

In the first chemical treatment step and the second chemical treatment step,

The neutralizing agent is introduced into the neutralization tank according to the pH value of the contaminated water supplied from the flow rate adjustment tank into the neutralization tank by the first pH meter,

The coagulant and the flocculant use turbidity (SS) of the incoming contaminated water measured by the first turbidity (SS) meter, Chl-a concentration measured by the first Chl-a meter and / or reuse of the effluent water Into each of the reaction tanks according to the standard,

The neutralizing agent input step, the coagulant input step and the flocculant input step of the neutralizing agent, the coagulant, the flocculant input amount and the input time of the weighted media recovery type automatic water treatment method to control the operation through the RPM control of the chemical supply pump.
In claim 4,

In the second drug treatment step,

The weighted filter is a weighted filter recovery type automatic water treatment method for inputting in proportion to the flow rate of the contaminated water flowing into the first reaction tank from the neutralization tank through the weighted filter input step.
In claim 1,

In the weighted media input step,

The weighting medium is supplied to the first reaction tank through a weighting medium filling tank and / or the weighting medium selected and recovered in the weighting medium recovery supply tanks through the recovery processing step is returned to the first reaction tank for reuse. Automated water treatment method for media recovery.
In claim 7,

Weighted filter recovery step of refilling the weighted filter medium lost in the weighted filter recovery supply tank through the weighted filter filling tank; and further comprising a weighted media recovery method.
In claim 7,

In the recovery processing step,

The weighted media recovery supply tank is installed under the settling tank lower than the first reaction tank to control the operation to supply pressure by feeding into the first reaction tank,

Or the weighted media recovery supply tank is installed on the upper side of the first reaction tank weighted media recovery type automatic water treatment method to supply by natural flow method.
In claim 1,

In the weighting agent injection step,

The weighting medium used (Carrier) is a weighted media recovery automated water treatment method consisting of any one or more mixtures selected from the group comprising alumina (Aluminium oxide) or garnet (Garnet) having a particle size of 40 ~ 150㎛.
In claim 1,

In the drug treatment step,

The neutralizing agent, the coagulant and the coagulant are weighted media recovery method for automatic dilution through one or more drug dilution tanks installed on the drug supply pipe connecting the respective drug stock solution tanks.
In claim 1,

The sedimentation treatment step and the recovery treatment step are each controlled to operate at a predetermined time interval,

Alternately operating at least two or more weighted filter recovery supply tanks in the recovery treatment step to desorb the weighted media from sludge sediment to recover the weighted media screened and recovered in the weighted media recovery supply tanks intermittently or / and continuously. Weighted media recovery automated water treatment method for operation control.
In claim 1,

The filtration treatment step,

A first filtration treatment step of selectively filtering the first filtration through a first filter according to the properties of the treated water supplied to the first filtration water tank; And

Weighted media recovery automated water treatment comprising; a second filtration treatment step of the first filtration through the first filter and subsequently secondary filtration through a high oxidation tank, a second filtration water tank, a second filter and a chlorine injector; Way.
In claim 13,

And the filtration treatment selection step of selecting the first filtration treatment step or the second filtration treatment step before the filtration treatment step.

In the filtration treatment selection step,

Weighted media recovery type automated water treatment method of operation controlled to select the first filtration treatment step or the second filtration treatment step according to the properties of the treated water flowing into the first filtration water tank.
In claim 1,

After the discharge treatment step,

According to the turbidity (SS) of the effluent measured by the second turbidity (SS) measuring instrument installed in the discharge tank inlet pipe and the pH of the effluent measured by the second pH measuring instrument, the effluent is returned to the flow adjusting tank for reprocessing. Weighted media recovery automated water treatment method further comprising; a discharge water transport step to go through the process.
In claim 1,

Wherein the entire water treatment process is started and stopped via a PCB or / and PLC program for automation.