KR101180338B1 - a sewage disposal plant - Google Patents

Abstract

PURPOSE: A sewage treating apparatus is provided to maximize the activation of microorganisms and to prevent the transferring of impurities and inorganic sediment to a subsequent process. CONSTITUTION: A sewage treating apparatus includes a water storing bath(30), a reaction converting bath(40), a contact aerating bath, settling bathes(70), a sterilizing and discharging bath(90), and a sewage transferring line(32). The sewage transferring line includes a sewage introducing hole, an air introducing hole, a T-shaped pipe, and a transferring and supplying pipe. The sewage introducing hole is spaced apart from the bottom of the storing bath. The air introducing hole is in connection with a blower(S). Sewage and air are combined at the T-shaped pipe. The transferring and supplying pipe transfers the sewage and the air to a subsequent process.

Description

Sewage treatment plant {a sewage disposal plant}

The present invention relates to a sewage treatment apparatus, and in particular, a screen for filtering contaminants is disposed in the screen portion disposed at the inlet of the main body, and because the transfer pipes are installed at predetermined intervals on the bottom of the storage tank, the remaining sludge is used as the next step. It prevents the transfer and installs by dividing the contact media installed in the contact exhalation tank into plural parts to improve the delivery of dissolved oxygen and the contact rate of microbial circulation, and return the sludge collected in the sedimentation tank to the whole process or to the sludge concentration tank for disposal. The present invention relates to a sewage treatment apparatus which greatly improves the purification rate of sewage treatment.

Sewage is water mixed with liquid or solid dirty substances that cannot be used for human life or business activities, and is discharged from a flush toilet, restaurant, kitchen, etc. in connection with a person's daily life.

Since discharge of such sewage into rivers or rivers causes serious pollution to the environment, it is usually via sewage treatment facilities. Sewage treatment facilities are discharged or finally discharged from private sewage treatment facilities installed in each home or industry. The sewage treatment plant, wastewater treatment plant or agricultural complex wastewater treatment plant is treated.

If it is seen as an example for the sewage treatment facility, the inlet pipe is installed on the left side of the anaerobic separation tank and the downward diffusion promoting plate is installed on the lower side of the inlet pipe as disclosed in the applicant's registered patent No. 0217922. In the lower part of the anaerobic separation tank, a double separation wall having an open type separation wall is installed at the upper part of the closed separation wall, and an upward diffusion promoting plate is installed at the end of the inlet pipe formed at the left side of the aerobic membrane. And a hopper-shaped needle point chamber formed in one chamber and two chambers of the aerobic biofilm, and a partition wall having an opening hole is formed between the chamber and the magnetic assembly, which is the next process of the precipitation chamber, A partition wall having opening holes is formed between the two self-assembling chambers, which are the next steps, and a self-assembling sedimentation chamber, which is a process following the two self-assembling chambers, is formed. have.

In the sewage treatment facility configured as described above, the diffusion promotion plate disposed in the inlet pipe disperses the mixed solid material of the incoming sewage and does not disturb the sediment separated in the bottom of the anaerobic tank, and the anaerobic separator The central double partition wall has a means to prevent the large volume of solid objects from rising to the next process and to decompose some large solids to prevent the closing of the circulating water in the next process. Will be provided.

In addition, the upward diffusion promoting plate installed at the end of the inlet pipe disposed before entering the aerobic biofilm is prevented from being blocked by contaminants in the inlet pipe.

The sedimentation chamber is to sediment and separate the suspended or separated surplus sludge through the aerobic biofilm to be taken back to the anaerobic separation tank of the first process to transfer anaerobic decomposition,

The self-assembling chambers 1 and 2 maintain the natural purification function by decomposing and separating the first and second stage treated water into the self-assembling particulate type. As the microbial community is formed, the effluent can be protected from the contamination of organic materials without any change in the purification rate.The lower part of the self-assembling sedimentation chamber is withdrawn through the air lift to draw out the precipitated fine particles through the automatic electronic control valve. It is said that there is a characteristic to enter.

However, there is a problem that the diffusion promoting plate disposed in the inlet pipe does not have a function to filter the contaminants and only the sewage can be introduced into the anaerobic separation tank as it is.

In addition, since the end of the inlet pipe disposed in the entire aerobic biofilm process is installed at the height of the center of the septic tank, the contaminants flowing by the diffuser installed at the bottom of the anaerobic separation tank bypass the upward diffusion promoting plate to the inlet pipe. An inflow problem has occurred.

In addition, when the air diffuser is disposed under the square contact media disposed in the aerobic biofilm 1,2 chambers and the self-assembly chambers 1 and 2, there is a problem in which the microorganisms are activated in a very limited range to activate the microorganisms only under the contact media.

In addition, in the sedimentation chamber and the assembly sedimentation chamber, the inflowed contaminants are left as they are collected under the sieve. have. Therefore, conventionally, in order to solve this problem, the inconvenience of having to set the cleaning work log for a certain period and then pull up the collected sediment to the pump after opening the manhole for each period.

The present invention has been made to solve the above problems, the purpose of which is to form a closed space at the inlet of the sewage treatment plant and screens for filtering the contaminants in the space is arranged to transport the contaminants to the next step It is to block, and to install the air stirrer at the bottom of the screen to provide the sewage and sewage can be separated by allowing the sewage circulating floating to guide the next process.

Another object is that most of the organic contaminants float, and the end of the transfer pipe for transferring the sewage from the reservoir to the next step is spaced at a predetermined interval on the bottom of the reservoir, so that the inorganic impurities are transferred in the next step. It is to provide blocking at the source.

Another purpose is to divide the contact media installed in the contact exhalation tank into two sides with the same size, but the diffuser is installed at the center of the divided boundary line, which increases the delivery of dissolved oxygen to the rear end of the contact media to activate the microorganisms. It is to provide something to maximize.

Another purpose is to return some of the scum-based contaminants floated in the upper part of the first and second sedimentation tanks to the storage tank, a system for returning the sediment collected sludge to the reaction conversion tank in the lower part of the primary sedimentation tank, and settled in the lower part of the secondary sedimentation tank. Since the sludge is transferred to the sludge concentration tank, the final discharge tank is provided so that even the fine sludge is not discharged.

The present invention for achieving the above object is the main body 10 of the sewage treatment device screen portion 20 for filtering a large volume of contaminants; In the next step of the screen unit 20, the storage tank 30 having an air stirrer 31 for supplying air while stirring with sludge and sewage; In the next step of the storage tank 30, the reaction conversion tank 40 having an air stirrer 41 connected to the blower (S) to increase the dissolved oxygen concentration while stirring the sludge and sewage; The next step of the reaction conversion tank 40 includes a contact breathing tank 50 having a contact medium for adsorbing the suspended substances or microorganisms contained in the raw water;
In the next step of the contact breathing tank 50, the overflow wear 61, 71 is installed on the upper side, and on one side, the inlet rectifiers 62 and 72 installed to allow the raw water to flow in the entire process, and the sludge is collected at the bottom. First and second sedimentation tanks 60 and 70 having sludge collection units 63 and 73 to be formed;
Sludge concentration tank 80 for receiving the sludge collected in the first and second settling tank (60, 70), and the disinfection tank 90 having a disinfection tank 91 and the discharge tank 92, characterized in that A sewage treatment apparatus comprising: a sewage inlet (32a) spaced at a predetermined interval from a bottom surface of the storage tank (30); An air inlet 32b connected to the blower S at an upper side of the sewage inlet 32a; T "pipe 32c in which wastewater and air are combined by the sewage inlet 32a and the air inlet 32b; The T" pipe 32c has a feed supply pipe for transferring the introduced sewage and air in a subsequent process ( A sewage conveying line 32 comprising 32d) is provided and achieved.

The present invention basically blocks the contaminants from being transferred to the next step in the screen unit, and since the end of the transfer pipe for transferring the sewage from the storage tank to the next step is spaced at a predetermined interval on the bottom surface of the storage tank, the inorganic system is the next step. The sediment of sediment is fundamentally blocked, and the contact media installed in the contact exhalation tank are divided into two sides with the same size, but the diffuser is installed at the center of the divided boundary line, so that dissolved oxygen is delivered to the rear end of the contact media. It can maximize the activation of microorganisms, and the system to return some scum-based contaminants to the storage tank in the upper and second sedimentation tank, and to return the sludge sedimented and collected to the reaction conversion tank in the lower part of the primary sedimentation tank. In the lower part of the secondary sedimentation tank, the sedimented sludge is transferred to the sludge concentration tank. It finally discharged twos control is effective to prevent any fine sludge discharge.

1 is a side view of the sewage treatment apparatus of the present invention.
2 is a plan view of the sewage treatment apparatus of the present invention.
Figure 3 is an enlarged view of the screen unit applied to the present invention.
Figure 4 is an enlarged view of the transfer line of the storage tank applied to the present invention.
5 is an enlarged view of the first to third contact media applied to the present invention.
6 to 7 is an enlarged view of the first and second settling tank applied to the present invention.

Hereinafter, described in detail with reference to the accompanying drawings.

First, as shown in FIGS. 1 and 2, the main body 10 of the sewage treatment apparatus includes a screen unit 20 for filtering a large volume of contaminants, and air for supplying air while stirring the sediment with sewage. Storage tank 30 having a stirrer 31 and a mechanical stirrer 33, an air stirrer 41 connected to a blower S which agitates sludge and sewage and increases dissolved oxygen concentration and a separate mechanical stirrer 42 Reaction conversion tank 40 having a), a contact aeration tank (50) having a contact medium for adsorbing and decomposing organic suspended solids or contaminants contained in sewage by microorganisms, and overflow wear (61, 71) on the top Is installed, the first and second settling tanks 60 having inflow rectifiers 62 and 72 installed at one side thereof so that sewage may be introduced in all processes, and sludge collection units 63 and 73 to collect sludge at the bottom thereof. 70 and sludge collected in the first and second settling tanks 60 and 70 It consists of a support concentration tank 80 and, sodokjo 91 and sewerage effluent consisting of disinfecting effluent tank (90) having a tank (92) device.

As shown in FIG. 3, the screen unit 20 circulates water flow by vortexing the sewage in the screen room 21 and the screen room 21 which primarily block the movement of contaminants in the next process. It is composed of an air stirrer 23 connected to a blower (S) so as to filter the contaminants on the screen 22 by separating the pulverization and the contaminants of the solid content and flow into the next process. .

In addition, the storage tank 30 has a sewage movement line 32 forcibly transported to the next step according to the amount of sewage introduced into the reservoir, and an air stirrer 31 for supplying oxygen to the bottom surface of the storage tank 30 and the air. The stirrer 31 is stopped, and it is comprised by the underwater type | mold agitator 33 which only stirs sludge and wastewater.

And the sewage movement line 32 is the blower (32a) and the sewage inlet 32a spaced apart from the bottom surface of the storage tank 30 at a predetermined interval as shown in the accompanying drawings, the blower ( S "and 32" of air inlet 32b connected with S), and the sewage inlet 32a and the air inlet 32b, where the sewage and the air are combined, and the T "pipe 32c It is comprised by the feed supply pipe 32d for conveying air to a next process.

In the reaction conversion tank 40, the return sludge is introduced from the first settling tank, which is the next step, and the anaerobic or the like for the purpose of oxygen agitation and denitrification and dephosphorization for oxygen supply to increase dissolved oxygen by influent mixing during the sludge active operation process. During the anoxic process, the agitator is stirred by the submersible agitator 42 and the submersible agitator 42 which stop the air stirrer 41 for supplying oxygen and mix and stir the introduced conveying sludge and the influent water. It is composed of a short circuit prevention member 43 for increasing the mixing rate by temporarily blocking the U-turn when the number is transferred to the next process.

In addition, the contact breathing tank 50 is divided into units of the first to the third contact breathing unit 51, each of the first to the third contact breathing unit 51 to collect and decompose suspended matter or organic matter contained in the sewage First to third contact media (52) disposed by dividing the contact media for the activity and proliferation of microorganisms. At the center of each boundary (L) of the first to third contact media (52) is composed of an diffuser device 53 to maintain dissolved oxygen while stirring and circulating action.

And, the first to third contact medium 52 is a net 52a for protecting and preventing damage to the contact medium, as shown in Figure 5 attached to the frame 52c for fixing the net (52a) It is composed.

And, the primary settling tank 60, as shown in Figure 6 attached to the first scum conveying line 64 for absorbing particulate scum at the upper part and conveyed to the storage tank 30 of the previous process; The sludge collecting unit 63 includes a sludge guide member 65 for inducing sludge along the inclined surface and a conveying sludge line 66 for conveying the collected sludge to the reaction conversion tank 40 which is a previous process; It consists of a first sludge conveying line 67 for conveying the excess sludge to the sludge concentration tank (80).

In addition, an end portion of the first scum conveying line 64 may be formed in a U ″ shape 64 to impart propulsion energy for free inflow and transport by the water head of the scum introduced.

The sludge guide member 65 is inclined.

As shown in FIG. 7, the secondary sedimentation tank 70 has a second scum conveying line 74 for absorbing particulate scum on the upper part and conveying it to the storage tank, which is the whole process, and the sludge collecting unit 73. Sludge guide member 75 for inducing sludge along the inclined surface, and a second conveying line 76 for transporting the sludge to the sludge concentration tank (80).

In addition, an end portion of the second scum transfer line 74 is preferably formed of a U ″ shape 74 to impart propulsion energy for free inflow and transfer by the water head difference of the scum.

In addition, the sludge guide member 75 is formed to be inclined.

In addition, the lower portion of the sludge concentration tank 80 is an air agitating device 81 for maintaining the characteristics of the inflow sludge until the concentration is aerobic characteristics and a supernatant conveying line for reprocessing the desorption liquid which is precipitated and concentrated when concentrated. (82) and the sludge concentration tank 80 is composed of a concentrated sludge conveying line 85 for transferring the concentrated sludge to the sludge storage tank 83 which is the next step.

Here, (64) (66) (67) (76) (74) (82) (85) is constituted by an airlift transfer device such as an enlarged filthy water transfer line shown in FIG.

The operation of the present invention configured as described above is as follows.

First, as shown in FIG. 3, a large volume of contaminants introduced with sewage is filtered by the screen 22 of the screen unit 20. In particular, the air supplied from the air stirrer 23 dissolves and separates the contaminants in the screen chamber 21 by the rotation of the water flow to filter the contaminants to the front of the screen 22 and flows only the sewage to the next step. I was able to enter.

When the sewage from the screen unit 20 is introduced into the storage tank 30, which is the next step, the sludge contained in the sewage is stirred by the air stirrer 31, and air is supplied. When the air is supplied to the air inlet 32b connected to the blower S to the sewage feed line 32 forcibly transferred to the process, the sewage flows into the sewage inlet 32a by the action, and the introduced sewage is transferred to the supply pipe 32d. ) Is transferred to the next process.

At this time, when the oxygen demand by the air stirrer 31 is unnecessary in the storage tank 30, in order to stir only the sludge and sewage, the operation of the air stirrer 31 is stopped and then stirred by the underwater stirrer 33.

Sewage conveyed by the transfer supply pipe 32d is introduced in the reaction conversion tank 40, the return sludge is introduced in the next settling tank, which is the next step, air agitation to increase influent mixing and dissolved oxygen during the sludge active operation process, and denitrification. In the anaerobic or anaerobic process operation for dephosphorization, the air agitator 41 for supplying oxygen is stopped, and the agitated conveying sludge and the influent are mixed and stirred with an underwater agitation device 42 to induce anaerobic and anoxic processes. The short-circuit preventing member 43 temporarily turns off the movement of the water flow when the stirred reaction water is transferred to the next process, thereby allowing the underwater type stirring device 42 to stir again, thereby increasing the mixing ratio.

If sewage flows into the next contact aeration tanks (1 to 3) 51 in the state where the screen 20 and the storage tank 30 and the reaction conversion tank 40 have treated about 20% of the contaminants and sludge as described above, A substance or an organic substance is attached to a plurality of contact media 52 and collected and decomposed by activated microorganisms and suspended microorganisms in contact aeration tanks, and the aeration apparatus 53 supplies oxygen to agitate and circulate and Keep dissolved oxygen for activity.

At this time, the frame 52c disposed outside fixes the flow of the contact medium 52 by the flow of water circulated through the introduced raw water and the diffuser 53.

On the other hand, since the first and second settling tanks 60 and 70 are installed in the contact breathing tank 50, the filthy water activated by the microorganisms in the contact breathing tank 50 flows into the respective inflow rectifying parts 62 and 72, respectively. The sludge is collected by the sludge collecting parts 63 and 73 disposed at the bottom of the sludge. At this time, the sludge guide member 65 is formed to be inclined, so that the sludge can be more effectively precipitated in the lower portion.

Then, the collected sludge is transported to each of the first and second sludge conveying lines 67 and 76 and transported to the sludge thickening tank 80, and the scum that floats on each upper portion is the first and second scum conveying lines 64. 74 is returned to the storage tank 30, which is the entire process. In addition, the sludge collected in the sludge collecting unit 63 is conveyed to the reaction sludge line 66 in the first settling tank 60 to the reaction conversion tank 40 which is the previous step.

In addition to the sludge and scum separated in the first and second settling tanks 60 and 70 as described above, the process water is transferred to the final disinfection discharge tank 90 through the respective overflowware 61 and 71. The water is disinfected and discharged to the outside through the discharge port 93.

Meanwhile, in the sludge concentration tank 80 in which sludge is collected in the first and second sludge conveying lines 67 and 76, the air agitation device 81 maintains the characteristics of the sludge before concentration in aerobic characteristics, and the upper water conveying line. In (82), the concentrated sludge separated during sedimentation is returned to be treated in a treatment process, and the concentrated sludge is transferred to the sludge storage tank 83 by the concentrated sludge transfer line 84 for final disposal.

As a result of each process as described above, the contaminant purification rate is 98.2% at 4.36 / L at 242 / L inflow and 95.9% at 8.0 / L at 195 / L for COD. SS removed 97.5% from 200 / L to 5.0 / L, TN removed from 66.7 / L to 89% from 7.22 / L, TP removed from 5.05 / L to 0.948 / L and 81% from total E. coli at 300,000 / mL. 99.9% was removed at 36 mice / mL.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

In addition, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

10: sewage treatment apparatus main body 20: screen portion
30: storage tank 40: reaction conversion tank
50: contact breathing tank 60: primary precipitation tank
70: secondary sedimentation tank 80: sludge concentration tank
90: disinfection tank

Claims (14)

At the inlet of the main body 10 of the sewage treatment apparatus, a screen unit 20 for filtering a large volume of contaminants; In the next step of the screen unit 20, the storage tank 30 having an air stirrer 31 for supplying air while stirring with sludge and sewage; In the next step of the storage tank 30, the reaction conversion tank 40 having an air stirrer 41 connected to the blower (S) to increase the dissolved oxygen concentration while stirring the sludge and sewage; The next step of the reaction conversion tank 40 includes a contact breathing tank 50 having a contact medium for adsorbing the suspended substances or microorganisms contained in the raw water;
In the next step of the contact breathing tank 50, the overflow wear 61, 71 is installed on the upper side, and on one side, the inlet rectifiers 62 and 72 installed to allow the raw water to flow in the entire process, and the sludge is collected at the bottom. First and second sedimentation tanks 60 and 70 having sludge collection units 63 and 73 to be formed;
Sludge concentration tank 80 for receiving the sludge collected in the first and second settling tank (60, 70), and the disinfection tank 90 having a disinfection tank 91 and the discharge tank 92, characterized in that In sewage treatment apparatus,
Sewage inlet (32a) spaced at a predetermined interval from the bottom surface of the storage tank 30;
An air inlet 32b connected to the blower S at an upper side of the sewage inlet 32a;
A T ″ pipe 32c in which sewage and air are combined by the sewage inlet 32a and the air inlet 32b;
The sewage treatment apparatus characterized in that the T "pipe (32c) is provided with a sewage transport line 32 including a feed supply pipe (32d) for transferring the introduced sewage and air in the next step. delete delete delete The method according to claim 1,
In the reaction conversion tank 40, the return sludge is introduced in the next step, and the unit process characteristic is stopped by the air stirrer 41 which supplies oxygen during the conversion operation to the anaerobic and anoxic step, and the introduced return sludge and the influent are mixed. An underwater stirrer 42 for stirring;
Sewage treatment apparatus characterized in that it consists of a short-circuit prevention member (43) to increase the mixing rate by temporarily blocking U-turn when the reaction water stirred by the submersible stirring device (42) is transferred to the next process. The method according to claim 1,
The contact breathing tank (50) is divided into units of primary to third contact breathing units (51), and each of the primary to third contact breathing units (51) has an activity of microorganisms for collecting suspended solids or organic matter contained in raw water. First to third contact media 52 disposed by dividing the contact media for increasing the number of contact media;
Sewage treatment apparatus, characterized in that the central portion of each of the boundary line (L) of the first to third contact media (52) consists of an acid generator (53) to maintain dissolved oxygen while stirring and circulating action. The method of claim 6,
Outside the first to third contact medium 52, the net (52a) for protecting and preventing damage to the contact medium;
Sewage treatment apparatus comprising a frame (52c) for fixing the net (52a). The method according to claim 1,
A first scum conveying line 64 for absorbing particulate scum and conveying the scum to the storage tank 30 which is the whole process;
The sludge collecting part 63 includes a sludge guide member 65 for inducing sludge along an inclined surface;
A conveying sludge line 66 for conveying the collected sludge to the reaction conversion tank 40 which is the previous process;
Sewage treatment apparatus comprising a first sludge conveying line (67) for conveying sludge to the sludge concentration tank (80). The method according to claim 8,
The end portion of the first scum conveying line (64) is sewage treatment apparatus, characterized in that formed in U "shape (64) in order to give the propulsion energy for the inflow and transport by the water head of the scum introduced. The method according to claim 8,
The sludge guide member (65) is sewage treatment apparatus, characterized in that formed in a slope.
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