KR100668150B1 - Wastewater treatment apparatus - Google Patents

Abstract

A sewage treatment apparatus is provided to maximize the sewage treatment efficiency in phosphorous and nitrogen removal by means of a roll pipe type water treatment unit. The first treatment cistern is constructed by one of an intermittent aeration cistern or an anaerobic cistern. The original water is flowed into the intermittent aeration cistern. The oxygen is intermittently supplied to the intermittent aeration cistern. In the anaerobic cistern, phosphorous is discharged from the active sludge. The second treatment cistern is constructed by one of an intermittent aeration cistern or a continuous aeration cistern. A sewage treatment member is constructed by the combination of the third treatment cisterns of the continuous aeration cistern. A deposition cistern is connected with the third treatment cistern.

Description

Sewage Treatment Apparatus {Wastewater Treatment Apparatus}

1 is a configuration diagram showing the overall configuration of the sewage treatment apparatus according to the present invention

Figure 2 is a plan view showing a sewage treatment apparatus of the present invention

3 is a main view showing treatment tanks of the present invention sewage treatment apparatus.

Figure 4 shows a roll pipe type water treatment unit used in the present invention sewage treatment apparatus,

(a) is a state of use

(b) a perspective view of the main part

(c) is a perspective view showing a unit pipeline

Figure 5 shows the sludge treatment unit installed in the sedimentation tank in the present invention sewage treatment apparatus,

(a) is the installation state

(b) shows the operating state

Figure 6 is a structural diagram showing a filter unit installed in the sedimentation tank in the present invention sewage treatment apparatus

7 is a configuration diagram showing a first embodiment of the sewage treatment apparatus of the present invention.

8 (a) and (b) are graphs showing the treatment efficiency of T-N and CODcr when the sewage treatment unit of FIG. 7 is configured.

9 is a configuration diagram showing a second embodiment of the sewage treatment apparatus of the present invention.

10A and 10B are graphs showing treatment efficiency of T-N and CODcr when the sewage treatment unit of FIG. 8 is configured.

11 is a configuration diagram showing a third embodiment of the present invention sewage treatment apparatus.

12A and 12B are graphs showing treatment efficiency of T-N and CODcr when the sewage treatment unit is configured by the combination of FIG.

Explanation of symbols on the main parts of the drawings

1 .... sewage treatment apparatus 10 .... first treatment tank

10a .... intermittent aeration tank 10b .... anaerobic tank

20 .... Second Treatment Tank 20a .... Intermittent Abandonment Tank

20b .... Continuous Abandoned Tank 30 .... Third Treatment Tank (Continuous Abandoned Tank)

40 .... Sewage treatment unit 52 .... Sludge return pipe

70 .... Roll pipe type water treatment unit 72 .... rope type media

74 .... Pipeline 90 .... Air nozzle

110 .... inlet 130 .. raw water supply branch

132,134 .... Return pipe 150 .... Sludge treatment unit

152 .... Unit body 156 .... Hose

190 .... rectifier wall 210 .... filter unit

The present invention relates to a sewage treatment apparatus for treating sewage, sewage, and wastewater by an active sludge method, and more specifically, by using a roll pipe type water treatment unit in which a rope-type media to which microorganisms are attached is used to increase sewage treatment efficiency. In addition, the construction of sewage treatment equipment for advanced treatment can be improved, and the sludge (microorganism) can be activated, and the floating and adherent microorganisms can be used as a whole. The present invention relates to a sewage treatment apparatus capable of maximizing and further discharging the purified treated water through the filter unit.

Pollutants in sewage, sewage, and wastewater are largely divided into organic matter expressed in biochemical oxygen demand (BOD) and chemical oxygen demand (COD) and nutrients nitrogen and phosphorus.

Up to now, the sewage treatment facility has been mainly treated with organic matter, and much of the nutrients nitrogen and phosphorus cannot be removed, but are discharged to rivers, lakes, or oceans.

However, if large amounts of nitrogen and phosphorus are discharged into sewage, eutrophication occurs in rivers and lakes, and if it enters the ocean, it causes red tide.

In addition, if this eutrophication is severe, the odor is severe, the water pollution is increased, and the use of drinking water and waterways is also restricted.

Therefore, in order to prevent such subsidence of the water system, nitrogen compounds or phosphates, which are nutrients, should be sufficiently removed in the sewage treatment plant.

On the other hand, the active sludge (sludge) method for the sewage treatment so far, such as anaerobic tnk, anoxic tank, anoxic tank and The sewage treatment is then carried out using biological precipitation steps.

For example, in an aeration tank where oxygen is supplied, organic nitrogen or ammonia nitrogen is oxidized to nitrate nitrogen, and in an anoxic tank where free oxygen is not supplied, nitrate nitrogen is reduced to nitrogen gas and denitrification is released into the atmosphere. In anaerobic tanks, phosphorus is released from sludge.

Then, the phosphorus component thus released is overingested by the microorganisms activated in the aeration tank again, and by removing excess microorganisms in excess of phosphorus with excess sludge, finally, treated water from which nitrogen and phosphorus are removed is obtained.

However, in such a conventional sewage treatment facility, since several anaerobic, anoxic, aeration and sedimentation tanks must be provided, since the installation scale is large, a substantial cost must be invested in the actual installation and operation of the installation. Or in an environment where small sewage treatment is desired.

In addition, the processing time was also delayed by at least six hours.

As a result, the conventional sewage treatment method which treats sewage biologically through the reaction stage of anaerobic (anaerobic tank), anoxic (anoxic) tank, aerobic (aeration tank), and settling and discharge of the sedimentation tank through multiple tanks requires excessive investment and The increase in operating costs and turnaround time was very uneconomical.

In addition, due to the large size of the facility, a large amount of cost and manpower are required to manage and manage construction problems such as civil engineering.

Therefore, when using a rollpipe type water treatment unit in which a rope-type media is embedded therein to perform denitrification or phosphorus release using attached and suspended microorganisms, the size of the sewage treatment facility is greatly reduced, and in particular, the rollpipe type water treatment unit is Since the dilution rate of the raw water flowing through the inside is small, the treatment time can be greatly reduced, which is preferable.

In addition, if the sludge conveying treatment in the settling tank is assured, the quality of the discharged water will be improved and more preferable.

The present invention has been made to solve the conventional problems as described above, the object is to maximize the efficiency of sewage treatment of phosphorus and nitrogen removal using a roll pipe type water treatment unit with a built-in rope-type media in which microorganisms adhere. Of course, the construction of the sewage treatment device for the advanced treatment is improved to the easy structure, while the activation of microorganisms are possible, and can utilize both floating and adherent microorganisms as a whole, maintaining the treatment efficiency of the sewage stable and purifying The present invention provides a sewage treatment apparatus capable of discharging treated water.

As one technical aspect of the present invention for achieving the above object, the present invention includes an intermittent nozzle for intermittently supplying oxygen, and a first treatment tank of an intermittent aeration tank into which raw water is introduced; and associated with the intermittent aeration tank. A second treatment tank of an intermittent aeration tank having an acid nozzle for intermittently supplying; And a sewage treatment unit which is connected to the intermittent aeration tank and includes a third treatment tank of a continuous aeration tank for decomposing organic matter and oxidizing nitrogen to nitrate nitrogen, having an acid nozzle for continuously supplying oxygen.
A sedimentation tank disposed in association with the continuous aeration tank of the third treatment tank and configured to settle sludge and discharge treated water, and return sludge to the intermittent aeration tank of the first treatment tank; And,
As the continuous aeration tank of the third treatment tank and the intermittent aeration irradiation of the first treatment tank are arranged in connection with the rope-type media capable of attaching microorganisms, the raw water is introduced to perform denitrification and smooth the removal of phosphorus by the activity of the microorganisms. Roll pipe type water treatment unit to increase nitrogen and phosphorus removal efficiency;
It provides a sewage treatment apparatus configured to include.
In addition, the present invention as a technical aspect, the first treatment tank of the anaerobic tank is discharged phosphorus is made while the operation of the provided acid nozzle is stopped; and the acid nozzle is connected with the anaerobic tank and intermittently supply oxygen is released A second treatment tank of the intermittent aeration tank where phosphorus treatment is made; And a sewage treatment unit connected to the intermittent aeration tank and having a third treatment tank of a continuous aeration tank configured to oxidize nitrogen to nitrate nitrogen through an acid nozzle which continuously supplies oxygen.
A sedimentation tank disposed in association with the continuous aeration tank of the third treatment tank, and the sludge is settled and discharged from the treated water, and the sludge is returned to the anaerobic tank of the first treatment tank; And,
The continuous aeration tank of the third treatment tank and the anaerobic irradiation of the first treatment tank are arranged in connection with a rope-type media capable of attaching microorganisms, and raw water is introduced to perform denitrification, and microorganism activity facilitates the removal of phosphorus. Roll pipe type water treatment unit to increase wine removal efficiency;
It provides a sewage treatment apparatus configured to include.
Finally, as another aspect of the present invention, the present invention, the first treatment tank of the anaerobic tank in which phosphorus is released; and an acid nozzle which is connected to the anaerobic tank and continuously supply oxygen to decompose organic matter and nitrogen A second treatment tank of a continuous aeration tank for absorbing and removing phosphorus released from an anaerobic environment while oxidizing with acidic nitrogen; And a sewage treatment unit in which a third treatment tank of the continuous aeration tank associated with the continuous aeration tank is combined.
A sedimentation tank disposed in association with the continuous aeration tank of the third treatment tank, and the sludge is settled and discharged from the treated water, and the sludge is returned to the anaerobic tank of the first treatment tank; And,
The continuous aeration tank of the third treatment tank and the anaerobic irradiation of the first treatment are disposed in connection with a rope-type media capable of attaching microorganisms, and raw water is introduced to perform denitrification. Roll pipe type water treatment unit to increase wine removal efficiency;
It provides a sewage treatment apparatus configured to include.

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Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 1 and FIG. 2 show the whole structure of the sewage treatment apparatus 1 which concerns on this invention.

That is, the sewage treatment apparatus 1 of the present invention includes a first treatment tank 10 composed of one of an intermittent aeration tank into which oxygen is intermittently supplied and raw water is introduced or an anaerobic tank from which phosphorus is released from activated sludge, and oxygen is intermittently. The second processing tank 20 which consists of one of the intermittent aeration tanks which are supplied continuously, or a continuous aeration tank which decomposes an organic matter and oxidizes nitrogen into nitrate nitrogen, and the 3rd treatment tank of a continuous aeration tank supplied with oxygen continuously The sewage treatment unit 40 is composed of a combination of the sewage treatment unit 40 and the third treatment tank is disposed in conjunction with the settling of the sludge is settled and discharged treated water, the sludge returned to the first treatment tank 50 is made, and Rope-type media capable of attaching microorganisms are embedded while being disposed between the third treatment tank 30 and the first treatment tank 10, and raw water is introduced to denitrate nitrate nitrogen and It comprises a roll pipe type water treatment unit 70 to increase the activity of the phosphorus and nitrogen to increase the efficiency of removal.

At this time, the sewage treatment unit 40, as shown in Figure 7, the first intermittent aeration tank (10a) of the first water treatment tank, the intermittent aeration tank 20a of the second water treatment tank, and the first continuous aeration tank 30 of the third treatment tank combined configuration It may be configured as an embodiment.

Alternatively, as shown in FIG. 9, the anaerobic tank 10b of the first water treatment tank, the intermittent aeration tank 20a of the second water treatment tank, and the continuous aeration tank 30 of the third treatment tank may be operated in the second embodiment in which the combination is configured.

Finally, as shown in FIG. 11, the sewage treatment part (the third embodiment) which consists of the anaerobic tank 10b of a 1st water treatment tank, the continuous aeration tank 20b of a 2nd treatment tank, and the continuous aeration tank 30 of a 3rd treatment tank is comprised. 40) can be configured.

On the other hand, the sewage treatment unit 40 of the first to third embodiments will be described in detail again with reference to Figs.

In addition, the characteristics of the sewage treatment apparatus 10 of the present invention is that the oxygen supply of each tank is intermittently or continuously supplied for maximizing the treatment efficiency. For example, in the intermittent aeration tanks 10a and 20a, oxygen is about 10 minutes. The oxygen supply is interrupted for 10 minutes and the aeration and anoxic conditions are repeated.

Therefore, in the aeration condition, organic nitrogen or ammonia nitrogen is oxidized to nitrate nitrogen, and in an anoxic tank in which free oxygen is not supplied, nitrate nitrogen is reduced to nitrogen gas and denitrification is released into the atmosphere.

In the continuous aeration tanks 20b and 30, oxygen is continuously supplied to the aeration condition.

Finally, in the anaerobic tank 10b, the oxygen supply is not made, so that phosphorous discharge from the activated sludge is smoothed, thereby improving phosphorus removal.

Accordingly, the sewage treatment apparatus 1 of the present invention is stable compared to the A ² 0 vacancy of the conventional biological sewage treatment composed of the existing inflow tank, anoxic tank, aeration tank, and anaerobic tank and sedimentation tank, but the treatment efficiency of sewage is stable. It provides economic benefits in terms of construction, operation and cost.

In addition, the biological sewage treatment AO method consisting of only anaerobic tank (aerobic tank), aeration tank and sedimentation tank is similar in size to the apparatus of the present invention, but the actual sewage treatment efficiency is lowered, and in particular, the treatment of excessive excess sludge generated to increase phosphorus removal efficiency. There are a lot of problems in actual operation.

7, 9, and 11 separately show the first to third embodiments of the sewage treatment unit 40 in the sewage treatment apparatus 1 according to the present invention.

At this time, the roll pipe-type water treatment unit 70 of the present invention can be used in series connected to the spiral wound in a cylindrical shape as shown in Fig. 7, or in parallel as shown in Figs.

1, 7, 9, and 11, each of the first to third water treatments 10, 20, and 30 is provided with an acid nozzle 90, which will be described in detail below. The water treatment tank is operated as intermittent aeration tank, anaerobic tank, continuous aeration tank according to whether or not the air nozzle is operated through this.

First, as shown in FIG. 7, in the sewage treatment apparatus 1a of the first embodiment of the present invention, an intermittent nozzle 90 for intermittently supplying oxygen, and intermittently composed of a first water treatment tank into which raw water is introduced. Intermittent aeration tank 20a comprising a second water treatment tank having an aeration tank 10a, a second water treatment tank having an intermittent nozzle 90 intermittently supplying oxygen, and a second intermittent aeration tank 20a, and continuously supplying oxygen A continuous aeration tank 30 composed of a third treatment tank for dissolving organic matter and oxidizing organic nitrogen or ammonia nitrogen to nitrate nitrogen is combined to form one sewage treatment unit 40a. .

The roll pipe type water treatment unit 70 is connected between the continuous aeration tank 30 that is the third water treatment tank and the intermittent aeration tank 10a that is the first water treatment tank.

At this time, as shown in Figure 7, the upstream 70a side of the roll pipe type water treatment unit 70, the first feed pipe connected to the raw water supply branch pipe 130 branched from the raw water inlet pipe and the third water treatment tank ( 132 is connected, and the second conveying pipe 134 connected to the intermittent aeration tank 10a which is the first water treatment tank is connected to the downstream 70b side of the roll pipe type water treatment unit 70.

Therefore, in the sewage treatment unit 40a of the first embodiment shown in FIG. 7, the intermittent aeration tank is continuously connected in order to increase the efficiency of nitrogen removal and low C / N through the plug flow type in the sewage water treatment unit. It is to maximize the efficiency of nitrogen removal even in the rain.

That is, the roll pipe type water treatment unit 70 of the present invention, which can drastically reduce the volume and residence time of the treatment tank (reactor), is abandoned for 10 minutes and 10 minutes is connected to an oxygen-free condition in which oxygen is not supplied. Efficient denitrification effect without oxidizing anoxic tank for removal, ie oxidizing organic nitrogen or ammonia nitrogen to nitrate nitrogen in the aeration tank 30, the third treatment tank, denitrification therein by raw water flowing through the water treatment unit. In addition, the incoming raw water supplies an organic carbon source necessary for denitrification, thereby maximizing denitrification efficiency.

In addition, since the first and second water treatment tanks are operated by the two-stage intermittent aeration tanks 10a and 20a, the power cost of the blower (B in FIG. 1) is reduced as compared to continuous blowing.

In the intermittent aeration tanks, aeration and anaerobic (anaerobic) conditions are repeated, thereby effectively removing phosphorus through phosphorus release and excess absorption.

On the other hand, Table 1 below shows the various water treatment-related numerical values of the result of operating the combination of the water treatment tank in the form of FIG.

Water treatment results according to the operation of the sewage treatment apparatus of the first embodiment Item enemy Effluent PH 7.2 (7.03 ~ 7.5) 7.03 (6.93 ~ 7.25) Alkalinity 111 (66-134) 50.8 (44-66) SS 81.4 (45 ~ 202) 3.9 (2 ~ 7) TCODCr 184.3 (82-409) 17.75 (11.5-34) SCODCr 110.5 (46.5 ~ 206.5 14.8 (9 ~ 31.5) NH ₃ -N 14.15 (7.6--17.58) 0.22 (0.15 ~ 0.27) NO ₃ -N 0.57 (0.3 ~ 0.9) 3.61 (1.9 ~ 5.2) T-N 18.45 (10.42 ~ 28.9) 4.51 (2.8 ~ 6.1) Ortho-p 1.12 (0.52 ~ 1.88) 0.85 (0.51 ~ 1.21) T-P 1.48 (0.62-3.02) 0.95 (0.61 ~ 1.31)

In this case, the numerical value of each item in Table 1 represents the average value of () below.

In addition, FIG. 8 is a graph showing the results of treatment of total nitrogen (TN) and chemical oxygen demand (COD) according to the sewage treatment apparatus 1a of the present invention composed of the combination of the water treatment tanks of FIG. It is a shame.

As a result, as shown in Table 1 and FIG. 8, it can be seen that the sewage treatment efficiency of the sewage treatment apparatus 1a of the first embodiment of the present invention configured as shown in FIG. 7 is high.

Next, FIG. 9 shows the configuration of the sewage treatment apparatus 1b of the present invention according to the second embodiment, wherein the sewage treatment unit 40b of the present invention includes the anaerobic tank 10b of the first water treatment tank for releasing phosphorus, An intermittent aeration tank 20a of a second water treatment tank having an acid nozzle connected to the anaerobic tank and intermittently supplying oxygen and repeatedly forming an aeration and anoxic condition, and an aerator connected continuously to the intermittent aeration tank 20a and continuously supplying oxygen. The continuous aeration tank 30 of the 3rd processing tank which comprises a nozzle and decomposes | disassembles organic substance and oxidizes organic nitrogen or ammonia nitrogen to nitrate nitrogen is comprised.

At this time, the roll pipe type water treatment unit 70 of the present invention is connected between the continuous aeration tank 30 and the anaerobic tank (10b) and the raw water is introduced.

Therefore, in the sewage treatment apparatus 1b of the second embodiment of the present invention, as described above, high denitrification efficiency in the roll pipe type water treatment unit 70 is maintained without providing a separate anoxic tank required for the A / O process. do.

In particular, it is possible to maximize the release of phosphorus in the anaerobic tank (10b) consisting of the first water treatment tank, and to remove the phosphorus absorption in the intermittent aeration tank and continuous aeration tank and the nitrogen removal through the nitrification, denitrification in the aeration tank and roll pipe type water treatment unit It significantly reduces the volume of the bath and at the same time makes it possible to remove nitrogen and phosphorus with high efficiency.

That is, the microorganisms (sludge) through the roll pipe type water treatment unit are maximized in the anaerobic condition of the first water treatment tank anaerobic tank (10b) under the anaerobic conditions, which is the phosphorus of the activated sludge phosphorus in the intermittent aeration tank (20a) and continuous aeration tank (30) Excessive intake leads to high phosphorus removal efficiency, and nitrogen removal is effectively performed in continuous aeration tanks and water treatment units.

Therefore, in the case of the second sewage treatment apparatus 1b of the present invention, by connecting the roll pipe type water treatment unit with the anaerobic anaerobic tank 10b, it is possible to achieve an effective denitrification effect without having to separately separate the anoxic tank for removing biological nitrogen. have.

In addition, as the nitrate nitrogen, which hinders phosphorus release during the phosphorus removal mechanism, is more smoothly denitrated in the rollpipe type water treatment unit 70 under anoxic conditions, it is possible to simultaneously remove nitrogen and phosphorus with high efficiency.

On the other hand, Table 2 below shows the various numerical values of the results of operating the water treatment apparatus 1b of the second embodiment of the present invention which is operated by combining the water treatment tanks in the form of FIG.

 Water treatment results according to the operation of the sewage treatment apparatus of the second embodiment Item enemy Effluent PH 7.22 (7.15-7.27) 6.9 (6.79 ~ 7.04) Alkalinity 115.5 (112--122) 54 (52-58) SS 63.75 (60-66) 4 (3 ~ 5) TCODCr 140.5 (129 ~ 146.5) 22.13 (11.5--29) SCODCr 124 (64.5-128.5) 17.13 (11.5-21.5) NH ₃ -N 14.43 (13.8-15.3) 0.388 (0.16-0.94) NO ₃ -N 0.35 (0.3 ~ 0.4) 4.6 (2.6-5.4) T-N 19.84 (15.86-28.4) 5.8 (3.5 ~ 6.9) Ortho-p 1.17 (1.08-1.36) 0.51 (0.13-0.79) T-P 1.69 (1.52-1.98) 0.61 (0.23-0.89)

In this case, the numerical value of each item in Table 2 represents the average value of ().

In addition, FIG. 10 is a graph showing the results of treatment of total nitrogen (TN) and chemical oxygen demand (COD) according to the second sewage treatment apparatus of the present invention composed of the combination of the water treatment tanks of FIG. to be.

As a result, as shown in Table 2 and FIG. 9, it can be seen that the sewage treatment efficiency is high also in the case of the sewage treatment apparatus 1b of the second embodiment of the present invention configured as shown in FIG.

Next, Fig. 11 shows a combination of water treatment tanks of the sewage treatment apparatus 1c of the third embodiment of the present invention.

In other words, in the apparatus 1c of the third embodiment of the present invention, the sewage treatment unit 40c is connected to the anaerobic tank 10b of the first water treatment tank for removing excess phosphorus released and the anaerobic tank, and continuously supplies oxygen. A continuous aeration tank 20b of a second treatment tank for decomposing organic matter and oxidizing organic nitrogen or ammonia nitrogen to nitrate nitrogen, and an acid nozzle for continuously supplying oxygen, connected to the continuous aeration tank 20a. The continuous aeration tank 30 of the 3rd processing tank which decomposes | disassembles organic substance and oxidizes organic nitrogen or ammonia nitrogen to nitrate nitrogen is comprised, is comprised.

The roll pipe type water treatment unit 70 of the present invention is connected between the continuous aeration tank 30 of the third water treatment tank and the anaerobic tank 10b of the first water treatment tank.

That is, while the third sewage treatment apparatus 1c of the present invention is composed of an anaerobic tank, aeration tank, and a sedimentation tank of a conventional A / O process, using the roll pipe type water treatment unit 70 as a transfer line, as described above, denitrification At the same time, the efficiency of phosphorus discharge in the anaerobic tank is maximized compared to the existing A / O process.

Therefore, by linking the polypipe-type water treatment unit 70, which can drastically reduce the volume and residence time of the treatment tank, under anoxic conditions, it is possible to achieve an efficient denitrification effect without leaving a separate anoxic tank for biological nitrogen removal.

And, as shown in Figures 9 and 11, by connecting the roll pipe type water treatment unit 70 composed of the inner conveying line in parallel, it is possible to obtain an efficient and stable nitrogen removal effect, and also to pull out during the phosphorus removal mechanism As the nitrate nitrogen, which hinders the extraction, is denitrated in the anoxic water treatment unit, the internal transfer line can be given to the anaerobic tank to simultaneously remove nitrogen and phosphorus with high efficiency even if the reaction volume is reduced.

On the other hand, Table 3 below shows various numerical values of the results of operating the water treatment apparatus 1c of the third embodiment of the present invention, which is operated by combining the water treatment tanks in the form of FIG.

 Water treatment results according to the operation of the sewage treatment apparatus of the third embodiment Item enemy Effluent PH 7.28 (6.86 ~ 7.54) 6.83 (6.68 ~ 7.11) Alkalinity 117 (85-178) 52 (48-70) SS 54 (22--65) 4 (2 ~ 7) TCODCr 121 (72-240) 16.5 (9 ~ 24) SCODCr 83 (48-154) 14 (9 ~ 21.5) NH ₃ -N 14.5 (9.6-19.4) 0.22 (0.15 ~ 0.38) NO ₃ -N 0.6 (0.3 ~ 1.2) 4.2 (2.5 ~ 5.1) T-N 18.2 (11.5 ~ 24) 4.9 (3.4-5.7) Ortho-p 1.24 (0.76 ~ 1.72) 0.64 (0.34-0.83) T-P 1.86 (0.85 ~ 2.06) 0.59 (0.44 ~ 0.93)

In this case, the numerical value of each item in Table 3 represents the average value of ().

In addition, FIG. 11 is a graph showing the results of treatment of total nitrogen (TN) and chemical oxygen demand (COD) according to the third sewage treatment apparatus of the present invention composed of the combination of the water treatment tanks of FIG. to be.

As a result, as shown in Table 3 and FIG. 12, it can be seen that the sewage treatment efficiency is high even in the case of the sewage treatment apparatus 1c of the third embodiment of the present invention configured as shown in FIG.

Next, as shown in FIGS. 1, 7, 9, and 11, some of the treated water that is not introduced into the roll pipe type water treatment unit in the continuous aeration tank, which is the third treatment tank 30, is introduced into the settling tank 50 and sludge. The sedimentation is carried out to finally discharge the treated water, wherein the sludge treated in the sedimentation tank 50 is partially disposed through a waste pipe (54 in FIG. 1) through the sludge treatment unit 150 described in detail below. A part is conveyed through the sludge conveyance pipe (52 of FIG. 1) to the said 1st process tank 10, ie, the intermittent aeration tank 10a which is a 1st form of FIG. 7, or the anaerobic tank 10b of FIG. 9 and FIG.

Therefore, the phosphorus released from the microorganisms in the absence of oxygen supply in the settling tank 50 is returned to the first treatment tank 10 through the sludge return pipe 52 to release the phosphorus and excess absorption of the microorganisms in the aeration or anaerobic environment. Phosphorus removal is achieved by.

Next, as shown in FIGS. 1 and 7, 9 11, a connection arrangement between the third treatment tank 30 of the continuous aeration tank and the first treatment tank 10 of the intermittent aeration tank 10a or the anaerobic tank 10b. The rolled pipe type water treatment unit 70 has a rope-type media 72 in which adhesion of microorganisms is increased, and thus activity is increased through a form of attachment of microorganisms.

Therefore, through the first conveying pipe 132 connected to the continuous aeration tank 30 and the upstream side 70a of the roll pipe type water treatment unit 70, it is not completely denitrated from the third treatment tank 30 of the aeration tank. Nitrogen nitrate flows into the roll pipe type water treatment unit 70, and at the same time, raw water is supplied to the roll pipe type water treatment unit 70 from the raw water supply branch pipe 130 of the raw water inlet pipe 110 connected to the upstream side 70a. Is introduced and denitrification is carried out using it.

At the same time, since oxygen is not supplied to the inside of the roll pipe type water treatment unit 70, microorganisms attached to the inner rope-type media 72 release phosphorus in an anaerobic environment, and the released phosphor is roll pipe type. It is introduced into the first treatment tank 10 through the second conveying pipe 134 connected to the downstream side 70b of the water treatment unit 70 to further increase the removal efficiency of phosphorus.

That is, the phosphorus-removing microorganisms in the roll pipe-type water treatment unit 70 convert the BB component into a low molecular weight compound in which the BOD component is absorbed in the absence of oxygen and oxygen, thereby decomposing the PHB (Poly B hydroxy buthylate) component contained in the body. The mechanism of releasing phosphorus (TP) and producing energy is achieved.

Therefore, although the sewage treatment apparatus 1 of the present invention uses the first to third treatment tanks as a result, it is possible to treat the sewage while adding a roll pipe type water treatment unit 70 to increase the removal efficiency of nitrogen and phosphorus. In addition, since denitrification and phosphorus release of nitrate nitrogen are added, the treatment time can be made very short while increasing the treatment efficiency.

In addition, the raw water introduced through the raw water supply branch pipe 130 connected to the roll pipe water treatment unit 70 serves to lower the concentration of nitrate nitrogen flowing into the roll pipe water treatment unit 70. It also provides other benefits of preventing release delays and reducing the overall residence time.

On the other hand, the roll pipe type water treatment unit 70 of the present invention, as shown in Figure 4a, includes a conduit 74 consisting of a predetermined diameter and length through which sewage can flow, and the rope-type media ( 72 is woven on the surface of the center line (72a) and the center line that is embedded in the longitudinal direction in the interior of the conduit is made of fine yarn (72b), and eventually makes the attachment of various microorganisms very smooth.

In addition, as shown in Fig. 4b of the conduit 74, there is provided a perforated tube 76, which is embedded in its longitudinal direction and provided with a through hole 76a for each predetermined position, so that if necessary in the pipeline It may be possible to supply air to the media or to air clean the interior of the conduit.

And, as shown in Figure 4c, the conduit 74 is preferably corrugated, because it facilitates the attachment of floating microorganisms to the vortex phenomenon in the corrugated space while maintaining the strength of the conduit.

It would also be possible to form a double tube 74 ″ using smooth conduits 74 ′ or using both conduits 74, 74 ′.

On the other hand, as shown in Figures 1, 2 and 4a, the roll-pipe type water treatment unit 70 used in the present invention may be used to connect at least one or more in a spiral wound cylindrical shape, and thus wound in a cylindrical shape Depending on the degree, the residence time of the treated water can be adjusted as desired, and since it is not a structure, no separate civil works are needed. Especially, since the influent does not spread widely like tanks, the dilution rate is low, so denitrification is caused by the attachment and activity of microorganisms. The anaerobic environment of over discharge is excellent.

At this time, as shown in Figures 1 to 3, in the sewage treatment apparatus 1 of the present invention, the acid nozzle 90 used in the first to third treatment tanks 10, 20, 30 is an air supply pipe ( 92 and an air spray nozzle 94 facing the bottom of the jaws in the air supply pipe 92.

In particular, the air supply pipe 92 is disposed close to the edge of the jaws, the air spray nozzles 94 are disposed toward the bottom of the jaws, sludge in the corners of the jaws that are likely to stick after sedimentation of the sludge It also provides a function to prevent sticking.

That is, as shown in Figures 1 to 3, in the sewage treatment apparatus 1 of the present invention, the diffuser nozzle 90 may be used as a sludge diffusion means.

On the other hand, in the sewage treatment apparatus 1 of the present invention, since the first to third treatment tanks are operated in three forms shown in FIGS. 7, 9 and 11, depending on the treatment environment such as intermittent aeration, anaerobic and continuous aeration, etc. Since the operation form for discharging air is also different, as shown in FIG. 1, a blower B which is operated separately from each diffuser nozzle 90 is connected, and these blowers B are electrically connected to the facility control unit. Of course, it is connected to control operation automatically.

In addition, the air spray nozzle 94 in the acid nozzle (90) of the present invention is preferably installed to face the bottom of the tank, as shown in Figure 3, which is to prevent the sludge settled on the bottom of the sludge fixed Secondary pollution in the tank is prevented, and in particular, the sludge spreads smoothly, contributing to the activation.

Next, FIG. 1 and FIG. 2 show the sedimentation tank 50 of the sewage treatment apparatus 1 of the present invention. The sedimentation tank 50 of the present invention includes a continuous aeration tank, which is the third treatment tank 30. It may be configured in conjunction with, and configured to enable precipitation and discharge of the treated water, it may be composed of at least one.

At this time, the settling tank 50 is provided with a rectifying wall 190 therein to increase the sedimentation, the final settling tank 50 is sludge treatment for sludge conveyance (waste) between the rectifying wall 190 and the partition wall 230. A unit 150 is provided, which partitions the sedimentation tank into a sedimentation zone and a discharge zone.

Of course, although not shown in the figure, the settling tank 50 may use a conventional settling tank, for example, a cylindrical settling tank having a stirrer installed therein and discharging the settling sludge from the bottom.

The sludge treatment unit 150 of the settling tank 50 includes a sludge conveying pipe 52 connected to the first treatment tank 10 and a sludge waste pipe 54 branched thereto to remove excess microorganisms to remove phosphorus. Is provided.

Therefore, a part of the sludge treated in the settling tank 50 is fed back to the aeration tank 10 to increase the microbial activity in the aeration tank, a part of the waste treatment, for example, if the daily waste amount of sludge is 1 ton, sludge conveyed amount Can be treated at a rate of about 30 tonnes.

2 and 5, the sludge treatment unit 150 of the present invention is shown, the sludge treatment unit 150 of the present invention, the unit body that moves back and forth along the rail 152a at the bottom of the sedimentation tank. 152, an operation wire 154 connected to the unit body 152 and installed in an endless track shape on a sedimentation tank, a hose 156 connected to the unit body 152, and a conveying pipe connected thereto ( 52) and waste pipe (54).

At this time, as shown in Figure 5, the operation wire 154 connected to the unit body 152 reciprocating along the rail in the sludge treatment unit 150, the drive pulley driven by a motor (not shown) ( 158 ') and other guide pulleys 158 disposed above, below, and before and after the jaw to allow the reciprocating movement of the unit while moving in an endless track.

Therefore, the sludge treatment unit 150 of the present invention, as shown in Figure 5b, can carry out the sludge S precipitated at the bottom of the sedimentation tank 50 without leaving over all parts of the sedimentation tank bottom, This will increase the settling efficiency in the settling tank.

Next, FIGS. 2 and 6 illustrate the filter unit 210 disposed in the discharge area toward one side of the partition wall 230 of the settling tank 50.

That is, as shown in Figures 2 and 6, the filter unit 210 of the present invention is a unit body 212 is connected to the discharge pipe 216 to enable the discharge of the treated water, and the unit body 212 It may be composed of a melbrane filter member (214a) (214b) disposed in the block to block contaminants such as bacteria when passing through the treated water.

Therefore, the treated water is discharged through the discharge pipe 216 connected to the unit body of the filter unit 210, and at this time, bacterial microorganisms or other sludge contained in the discharge water are filtered while passing through the melbrane filter members 214a and 214b. This can improve the quality of the final effluent.

At this time, the membrane filter member is provided as a paper filter (membrane) 214a attached to the outside of the unit body 212 and a resin filter (membrane) 214b attached to the inside thereof, as shown in FIG. 6. Such membrane filter elements are known.

Thus, according to the sewage treatment apparatus of the present invention, by using a roll pipe with a rope-type media to which microorganisms are attached, it is possible to maximize the sewage treatment efficiency of phosphorus and nitrogen removal, and to easily install the sewage treatment apparatus for advanced treatment. In addition to improving the structure, it is possible to activate the aeration conditions of sludge (microorganisms), and can use both suspended and adherent microorganisms as a whole, so that the sewage treatment efficiency is stably maintained, and further purified through the filter unit. It provides an excellent effect of enabling the discharge of treated water.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (11)

delete A first treatment tank of an intermittent aeration tank for intermittently supplying oxygen, into which raw water flows; and a second treatment tank of an intermittent aeration tank having an acid nozzle for intermittently supplying oxygen to the intermittent aeration tank; And a sewage treatment unit which is connected to the intermittent aeration tank and includes a third treatment tank of a continuous aeration tank for decomposing organic matter and oxidizing nitrogen to nitrate nitrogen, having an acid nozzle for continuously supplying oxygen. A sedimentation tank disposed in association with the continuous aeration tank of the third treatment tank and configured to settle sludge and discharge treated water, and return sludge to the intermittent aeration tank of the first treatment tank; And, As the continuous aeration tank of the third treatment tank and the intermittent aeration irradiation of the first treatment tank are arranged in connection with the rope-type media capable of attaching microorganisms, the raw water is introduced to perform denitrification and smooth the removal of phosphorus by the activity of the microorganisms. Roll pipe type water treatment unit to increase nitrogen and phosphorus removal efficiency; Sewage treatment device configured to include. A first treatment tank of an anaerobic tank in which phosphorus is released while operation of the provided acid nozzle is stopped; and a second treatment of an intermittent aeration tank in which an acid nozzle is connected to the anaerobic tank and intermittently supplies oxygen, and the discharged phosphorus is treated article; And a sewage treatment unit connected to the intermittent aeration tank and having a third treatment tank of a continuous aeration tank configured to oxidize nitrogen to nitrate nitrogen through an acid nozzle which continuously supplies oxygen. A sedimentation tank disposed in association with the continuous aeration tank of the third treatment tank, and the sludge is settled and discharged from the treated water, and the sludge is returned to the anaerobic tank of the first treatment tank; And, The continuous aeration tank of the third treatment tank and the anaerobic irradiation of the first treatment tank are arranged in connection with a rope-type media capable of attaching microorganisms, and raw water is introduced to perform denitrification, and microorganism activity facilitates the removal of phosphorus. Roll pipe type water treatment unit to increase wine removal efficiency; Sewage treatment device configured to include. A first treatment tank of an anaerobic tank in which phosphorus is released; and an acid nozzle which is connected to the anaerobic tank and continuously supplies oxygen to decompose organic matter and oxidize nitrogen to nitrate nitrogen to absorb phosphorus released in an anaerobic environment A second treatment tank of the continuous aeration tank to be removed; And a sewage treatment unit in which a third treatment tank of the continuous aeration tank associated with the continuous aeration tank is combined. A sedimentation tank disposed in association with the continuous aeration tank of the third treatment tank, and the sludge is settled and discharged from the treated water, and the sludge is returned to the anaerobic tank of the first treatment tank; And, The continuous aeration tank of the third treatment tank and the anaerobic irradiation of the first treatment are disposed in connection with a rope-type media capable of attaching microorganisms, and raw water is introduced to perform denitrification. Roll pipe type water treatment unit to increase wine removal efficiency; Sewage treatment device configured to include. The roll pipe type water treatment unit according to any one of claims 2 to 4, wherein the roll pipe type water treatment unit includes a conduit having a predetermined diameter and length through which sewage can flow. The rope-type media is sewage treatment apparatus characterized in that the center line is embedded in the longitudinal direction inside the duct and woven on the surface of the center line and made of fine yarn to enable the attachment of various microorganisms. 6. The sewage treatment apparatus according to claim 5, wherein the roll pipe type water treatment unit is connected to at least one or more in a spiral wound cylindrical shape. 7. The sewage treatment apparatus according to claim 6, wherein a plurality of the spirally wound roll pipe type water treatment units are connected between the third treatment tank and the first treatment tank in series or in parallel. The upstream side of the roll pipe type water treatment unit is connected with a raw water supply pipe branched from a raw water inlet pipe and a first conveying pipe connected with a continuous aeration tank of a third treatment tank. Downstream of the pipe-type water treatment unit, sewage treatment apparatus characterized in that the second conveying pipe connected to the intermittent aeration tank or anaerobic tank of the first treatment tank is connected. The sludge treatment unit according to any one of claims 2 to 4, wherein the sedimentation tank is composed of one or more sludge, and a sludge return pipe and a sludge waste pipe are connected to the final sedimentation tank to treat the sludge in the sedimentation tank. Sewage treatment unit. 10. The sludge treatment unit of claim 9, wherein the sludge treatment unit comprises: a unit body moving back and forth along the rail at the bottom of the settling tank, and an operation wire connected to the unit body in an endless track shape on the settling tank, and the unit body and sludge. Sewage treatment apparatus comprising a reciprocating type including a hose connected to the conveying pipe and the treatment pipe. According to any one of claims 2 to 4, wherein the settling tank is further provided with a rectifying wall for smoothing sludge sedimentation, and the partition wall provided with a filter unit for improving the water quality when the treated water discharged on one side. Sewage treatment apparatus characterized by the above.

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