KR20180045871A - Wastewater advanced treatment apparatus and method of sequencing batch soil activated sludge process utilizing sludge buffer tank - Google Patents

Abstract

According to the present invention, an advanced wastewater treatment apparatus installs a semi-tank (anaerobic-anoxic tank) which is a bio-reactor on a front end of an aeration tank to treat nitrogen and phosphorus in accordance with time to compensate for a limitation of time division of a sequencing batch soil-activated sludge process. Two parallel aeration tanks are installed to continuously treat organic matter and nitrogen oxide. A sludge buffer tank is arranged in a direction in series with the semi-tank to collect high-concentration sludge settled after a discharge process of the aeration tanks by a sludge collector. Then the sludge is divided and flows into the semi-tank and the sludge buffer tank by a distribution tank. Initial high-concentration anoxic sludge and anaerobic inflow water are mixed in the semi-tank to efficiently improve the discharge of phosphorus. Then nitrified water and sludge of the aeration tanks are transported to the semi-tank by continuous transport to be agitated to improve denitrification efficiency. The sludge (microorganisms) transported to the sludge buffer tank becomes dominant soil microorganisms by a microorganism culture medium and then flows into the aeration tanks for balancing microorganisms of the aeration tanks to collect low molecular foul odor-causing materials such as nitrogen and phosphorus by a chelate reaction of the soil microorganisms to reduce the foul odor. Also, a supernatant water discharge apparatus using a minimal differential head is installed on the advanced wastewater treatment apparatus to avoid an inefficient unused space of a treatment facility structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage sludge treatment apparatus using continuous sludge buffer sludge,

More particularly, the present invention relates to an apparatus for advanced wastewater treatment in a continuous batch activated sludge process, and more particularly, to a sludge buffer tank between a semi-tank (anaerobic-anaerobic) And to control the microbial balance in the aeration tank, thereby improving the treatment performance of the wastewater, and more particularly, to a wastewater treatment apparatus for biological advanced treatment.

In the conventional continuous batch activated sludge process, anaerobic, anoxic, and aerobic conditions are established according to time in a single reactor, and the release of phosphorus in anaerobic condition and the denitrification of nitrifying nitric oxide (NO ₃ ) ₂ Degass with gas. Exhalation conditions have mechanisms to remove organic matter, nitrification of nitrogen compounds, and elimination of excess absorption of phosphorus. Such conventional technology is now widely commercialized with ease of easy decomposition of organic matter and solids, compact construction, and automated maintenance system.

However, it is difficult to change the condition of water treatment according to the time condition in continuous commercial batch activated sludge process, and continuous treatment of influent water is difficult. The amount of unbalanced microorganisms in the sequenced bioreactor, and the difficulty of deformation operation due to the initial formalized process module. Although it has advantages such as stable organic and solid removal, removal efficiency of nitrogen and phosphorus is less than 40% ~ 50%.

It is an object of the present invention to provide a continuous batch activated sludge process which is capable of improving the limit of time division and changing the water treatment conditions by providing a parallel structure aeration tank for continuity of treatment of the semi-tank (anaerobic- And further improve the removal efficiency of nitrogen and phosphorus in the continuous batch activated sludge process by controlling the influent and inflow amount of the soil microbes according to the influent load condition and improve the wastewater treatment performance The present invention has been made in view of the above problems.

According to an aspect of the present invention, there is provided an apparatus for advanced treatment of wastewater in a continuous batch type activated sludge process using a sludge buffer tank. The apparatus for treating wastewater according to the present invention comprises: A flow rate regulating tank 10 for regulating and discharging the discharged amount; Semi-tank (21), which functions as an anaerobic and anoxic tank depending on time; A raw water transfer system (14) for transferring the wastewater introduced into the flow rate adjusting tank (10) to the semi - furnace; First and second aeration tanks (30a, 30b) connected in parallel with the semi-tank (21) to continuously treat the organic material and nitrogen oxide; A sludge buffer tank (23) having a microorganism incubator (24); First and second inflow conveying systems (25a, 25b) for conveying wastewater between the semi-tub (21) and the first and second aeration tanks (30a, 30b); First and second sludge transfer systems (40a, 40b) for transferring sludge collected from the first and second aeration tanks (30a, 30b) to the semi-bath (21) and the sludge buffer tank (23); A microorganism conveyance system 45 for conveying the positively-ignited microorganisms from the sludge buffer tank 23 to the first and the aeration tanks 30a and 30b; And a control panel 50 for performing overall control for advanced treatment of the wastewater.

In one embodiment, the flow rate adjusting tank 10 includes a flow rate adjusting agitator 11 for stirring the introduced wastewater; A raw water transfer pump (12) for introducing the stirred wastewater into the semi-bath (21) through the raw water transfer system (14); And a water level sensor 13 sensing the level of the wastewater flowing into the flow rate adjusting tank 10 and providing the water level to the control panel 50. The control panel 50 senses the water level detected by the water level sensor 13 And a stepwise load mode in which the processing load is variably controlled so that the processing load can be kept constant by controlling the number of revolutions per minute (RPM) of the raw water transfer pump 12, the number of times of operation, and the time according to the level.

In one embodiment, the semi-tub 21 includes a semi-tub assisted semi-tub 22 having a variable number of rotations under the control of the control panel 50.

In one embodiment, first and second aerator inflow valves 26a and 26b installed in the first and second inflow conveyance systems 25a and 25b; First and second sludge drawing pumps 41a and 41b installed in the first and second sludge transfer systems 40a and 40b for drawing sludge from the first and second aeration basins 30a and 30b; And first and second microbial distribution tanks 42a and 42b for transferring the sludge drawn through the first and second sludge drawing pumps 41a and 41b to the semi-tank 21 and the sludge buffer tank 23, The control panel 50 controls the balance of the sludge (amount of microorganisms) while the first and second aeration tanks 30a and 30b are operated and the amount of necessary microorganisms And controls the first and second sludge drawing pumps 41a and 41b to be enabled.

In one embodiment, the first and second microbial distribution tanks 42a and 42b may be configured to provide a 'V' shaped groove having a scale to enable measurement, and a sludge remaining at an extremely low load, And an air nozzle to which the air line is connected.

In one embodiment, the first and second aeration basins 30a and 30b include first and second sludge collectors 33a and 33b installed in the longitudinal direction at the lower center, The collector 33a 33b includes a main pipe 33-1 having a linear tube structure, a plurality of nipple-shaped auxiliary pipes (sludge suction port) 33-2 formed at the lower portion of the main pipe 33-1, And an air line 33-3 connected to the end of the main main pipe 33-1 to prevent clogging.

In one embodiment, the microorganism incubator 24 includes a detachable outer body 24-1 and a body inner tube 24-2, a filter material inlet 24-4 connected to the ground so that the solid filter material can be replenished, A filter medium feeding tube 24-3 extending from the inlet 24-4 to the outer body 24-1, a diffuser 24-8 installed below to form aerobic conditions, a body inner tube 24-2, A compression spring 24-7 for determining the height of the measurement scale so that the compression spring 24-7 and the microorganism incubator 24 are provided at the lower part of the inner tube supporting part, And includes a lifting rails 24-6 for easy movement in the vertical direction for maintenance.

In one embodiment, the control panel incorporates a PLC program to control the process load by the measurement signal.

In one embodiment, the first and second aeration basins 30a and 30b have a symmetrical structure with respect to the semi-tank 21 and the sludge buffer tank 23, ) And sludge replenishment in the sludge buffer tank (23) are easily structured, and the valves attached to each tank are easy to control conveying and inflowing by mutual organic operation.

In one embodiment, the first and second aeration basins 30a and 30b have a structure in which natural drainage and pressure are applied in parallel so as to discharge the treated water using the minimum water head difference by reducing unnecessary dead space And includes first and second equalization discharge devices 34a, 34b.

According to the apparatus for advanced treatment of wastewater according to the present invention, since the biological reactor in the batch type is implemented in a similar form to the continuous flow agitation reactor (CFSRT), the inflow and outflow into the bioreactor can be continuously divided into inflow, Can be maintained. In addition, the bioreactor constructed at the front end of the first and second aeration tanks is divided into a semi-tank (anaerobic-anoxic tank) and a sludge buffer tank to form a water treatment condition (anaerobic- anaerobic) It is possible to control the amount of microorganisms. Therefore, the treatment efficiency of nitrogen and phosphorus can be improved more than the conventional continuous batch activated sludge process. Furthermore, the present invention can reduce not only high-efficiency treatment of wastewater treatment, but also odor reduction in the treatment facility due to deformation of the right-burned microorganism group, so that there is no need for a double specification, thereby saving budget for public and private sewage treatment facilities.

1 is a view showing a control and processing system of the apparatus for advanced wastewater treatment according to a preferred embodiment of the present invention.
2 is a diagram illustrating a process flow and a control method of the wastewater treatment apparatus according to a preferred embodiment of the present invention.
3 is a view showing an MLSS control system that proceeds through a sludge buffer tank.
FIGS. 4A and 4B are top and bottom plan views showing a sludge transport system and a transport system for collecting sludge in a wastewater treatment apparatus according to a preferred embodiment of the present invention.
5 is a view showing a sludge collector constructed in the first and second aeration tanks.
6 is a view showing a microorganism incubator constructed in a sludge buffer tank.
Figure 7 is a diagram showing the first and second microbial distribution tanks.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention can be modified or applied in various forms. Thus, the preferred embodiments of the present invention are not intended to limit the invention to the particular forms. It is to be understood that included within the spirit and scope of the present invention is the inclusion of similar substitutes that do not violate the intent. Further, the embodiments of the present invention are provided to enable those skilled in the art to understand the present invention more easily. The drawings presented in the embodiments of the present invention may be exaggerated or omitted in practice. In the drawings, the same components are denoted by the same reference numerals. The detailed description of known functions and configurations that may be unnecessarily obscured by the gist of the present invention may be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing a control and processing system of a wastewater treatment apparatus according to a preferred embodiment of the present invention, and FIG. 2 is a flowchart showing a processing flow and a control method of the wastewater treatment apparatus according to a preferred embodiment of the present invention FIG.

1 and 2, an apparatus for advanced wastewater treatment according to a preferred embodiment of the present invention includes a flow rate adjusting tank 10, a bioreactor 20 including a semi-tank 21 and a sludge buffer tank 23, 1 and a second aeration tank 30a, 30b, first and second microorganism distribution tanks 42a, 42b, and a control panel 50. A flow rate adjusting tank stirrer 11, a raw water feed pump 12 and a water level sensor 13 are installed in the flow rate adjusting tank 10. A semi-assistant feeder half 22 having a variable number of rotations is installed in the inside of the semi-tank 21 under the control of the control panel 50 and a microorganism incubator 24 is installed in the sludge buffer tank 23. The first and second aeration units 32a and 32b, the first and second sludge collectors 33a and 33b, the first and second upper water discharge units 32a and 32b are connected to the first and second aeration bases 30a and 30b, 34a and 34b and first and second surplus sludge pumps 35a and 35b are installed and the first and second MLSS meters 36a and 36b for MLSS concentration measurement and the first and second MLSS meters 36a and 36b for water level measurement are provided. Level detectors 37a and 37b are installed. First and second treated water discharge valves 38a and 38b are provided at discharge ends of the first and second high-water discharge apparatuses 34a and 34b for controlling discharge of treated water.

The raw water transfer system 14 is constituted between the raw water transfer pump 11 and the semi-bath 21 so that the wastewater flowing into the flow rate adjusting tank 10 is supplied to the semi-bath 21 of the bioreactor 20. [ Between the semi-tub 21 and the first and second aeration tanks 30a and 30b, first and second inflow conveyance systems 25a and 25b for feeding inflow of wastewater are constituted. The first and second inflow conveying systems 25a and 25b are provided with first and second aeration inflow valves 26a and 26b for controlling inflow flow rate of the wastewater. A plurality of aeration tank blowers 31 are connected to the first and second aeration tank units 33a and 33b formed in the first and second aeration tanks 30a and 30b. The air generated in the plurality of aeration tank blowers 31 is configured to be selectively supplied to the first aeration aerator unit 32a and the second aeration unit 31b.

The first and second sludge conveying systems 40a and 40b are provided between the first and second aeration basins 30a and 30b and the bioreactor 20 for transferring the sludge collected by the first and second sludge collectors 33a and 33b, 40b. The first and second sludge transfer systems 40a and 40b are connected to first and second sludge draw pumps 41a and 41b connected to the first and second sludge collectors 33a and 33b, And a sludge buffer tank 23. The first and second microorganism distribution tanks 42a and 42b are used to distribute the sludge containing microorganisms to the sludge buffer tank 23 and the sludge buffer tank 23, respectively. The sludge buffer tank 23 and the first and second aeration basins 30a and 30b are connected to the first and second aeration bases 30a and 30b to transport the soil microbes that have been ignited in the microbial cell 24 of the sludge buffer tank 23 to the first and second aeration basins 30a and 30b. And 30b. The microbial transportation system 45 is provided with first and second microbial inflow valves 46a and 46b for controlling inflow of soil microbes supplied to the first and second aeration basins 30a and 30b.

The wastewater flowing into the flow rate adjusting tank 10 is firstly stirred by the flow rate adjusting tank stirrer 11 and transferred to the bioreactor 20 by the raw water transfer pump 12. The water level sensor 13 senses the level of the wastewater flowing into the flow rate control tank 10 and provides it to the control panel 50. The control panel 50 has a stepwise load mode in which the RPM of the raw water feed pump 12 is variably controlled according to the sensed level. For example, the stepwise load mode can be configured as a four-step load mode with A-level (high load), B-level (normal load), C-level (low load) and D-level (extremely low load). In this stepwise load mode, the flow rate of wastewater flowing into the bioreactor 20 in the flow rate control tank 10 is controlled uniformly during a predetermined inflow time. Thus, the load of the bioreactor 20 can be maintained evenly during the inflow time so that the treatment efficiency can be stabilized.

Table 1 below shows an example of variable control of the flow rate into the syngas bioreactor 20 according to the stepwise load mode when a raw water pump of 1000 tons is selected. In Table 1, the frequency (Hz) can be selected in the range of 50 Hz to 60 Hz.

division Control method Inlet flow (Q) Pump operation
Time (minutes) Pump discharge flow rate
(M3 / min) Inflow of bioreactor (㎥ / times) A-level RPM (Hz) control 1.1Q Operate for 180 minutes 0.764 137.5 B-level RPM (Hz) control 1.0Q Operate for 180 minutes 0.694 125.0 C-level RPM (Hz) control 0.6Q Operate for 180 minutes 0.417 75.0 D-level Time and frequency control 0.22Q 40 minutes operation 0.694 27.8

In this way, in the flow rate control tank 10, the control panel 50 uses the level sensor 13 to determine the influent flow rate to feed the continuous load (feed) of the bioreactor 20, . Therefore, the load of the bioreactor 20 can be kept constant by supplying a predetermined amount of food while controlling the number of rotations (RPM) of the raw water transfer pump 12, the number of times, and the time control during the inflow time of the raw water.

The apparatus for advanced treatment of wastewater according to the present invention has a structure in which two first and second aeration bases 30a and 30b are installed in parallel. Table 2 below is an example of the operating process and the process time in the first and second aeration tanks 30s and 30b.

The aeration tank A (30) Process / Time Inflow / * Return / Aeration (180 minutes) Precipitation (90 minutes) Exhaust (90 minutes) The aeration tank B (31) Process / Time Precipitation (90 minutes) Exhaust (90 minutes) Inflow / * Return / Aeration (180 minutes)

Referring to Table 2, the first and second aeration bases 30a and 30b are continuously operated in the order of the inflow / transport / aeration (180 minutes), the settling (90 minutes) and the discharge (90) The water treatment process proceeds. During the initial transportation, the aeration process is carried out after the aeration state is turned off for about 5 to 10 minutes. The transporting process shown in Table 2 includes microbial inflow and return of the semi-bath (anaerobic-anaerobic) 10 and the sludge buffer tank 23 as described later. In addition, the transporting step is controlled by interlocking with the inflowing load of the aeration tank, and transporting the deficient microorganisms to the first and second aeration tanks 30a and 30b. And further includes the conveyance from the sludge buffer tank 23 to the first and second aeration tanks 30a and 30b for microbial balance between the first and second aeration tanks 30a and 30b.

In an example of the operating process and the process time of the first and second aeration tanks 30a and 30b in the wastewater treatment apparatus according to the preferred embodiment of the present invention, the treatment process includes two first and second aeration tanks 30a and 30b ) Can be operated in a sequential manner by continuously operating the continuous batch activated slurry process as a basic process. In the inflow / outflow / aeration process stage, the initial transport is to transport only the pure anaerobic sludge layer with the aeration turned off.

Semi-tank (10) is variably shifted from anaerobic to anaerobic conditions over time. In the second aeration tank 30b, the sedimentation process and the discharge process are progressed sequentially, and then the microorganisms in the anaerobic condition under high anaerobic conditions are divided at a predetermined ratio in the second microorganism distribution tank 42b, And the sludge buffer tank 23, respectively. At this time, the semi-tank (21) functions as an anaerobic tank, and the anaerobic inflow sewage and the inflowed microbial layer are mixed to induce release of phosphorus under anaerobic conditions. Thereafter, the aerobic conditions are continuously performed in the second aeration tank 31b, and the microorganism layers distributed in the second microbial distribution tank 42a are distributed to the semi-tank 21 and the sludge buffer tank 23, respectively . In this process, the semi-bath 21 functions as a sulfuric acid to carry out a denitrification (N ₂ ↑) oxidation process of nitrified nitric acid (NO ₃ ). At the same time, in the sludge buffer tank 23, the mixed liquid (general water treatment microorganism) conveyed from the second aeration tank 30b by the microorganism incubator 24 is converted into soil microorganisms and then cultured.

The soil microorganism cultivated in the microorganism incubator (24) is provided to the second aeration tank (30b). The control panel 40 controls the second microorganism inflow valve 46b based on the MLSS concentration measured by the second MLSS meter 37a. Thus, the cultured soil microorganisms are introduced into the second aeration tank 30b as needed, so that the amount of soil microorganisms in the second aeration tank 30b is automatically controlled. In an emergency, the amount of soil microorganisms in the first and second aeration basins 30a and 30b of the parallel structure can be compensated for and maintained equally. May be controlled in conjunction with the inflow load of the flow rate adjusting tank 10 to reflect the level measured by the second level sensor 37b together with the result measured by the second MLSS meter 37a in the MLSS concentration control.

As described above, in the first and second aeration basins 30a and 30b, excessive feeding of phosphorus, which was released by the soil microorganisms returned from the sludge buffer tank 23, and removal of organic matter and nitrification are performed to reliably remove nitrogen and phosphorus and organic matter . The first and second aeration bases 30a and 30b are provided with first and second aeration tank devices 32a and 32b for generating aerobic conditions and first and second surplus sludge pumps 35a and 35b for withdrawing excess sludge, In order to more efficiently discharge the treated supernatant, first and second supernatant discharge devices 34a and 34b utilizing the minimum water head difference are provided. The first and second high-grade water discharge units 34a and 34b have a structure in which natural drainage and pressure-type discharge are performed in parallel so as to reduce unnecessary dead space and discharge the treated water using the minimum water head difference. In particular, first and second sludge collectors 33a and 33b for uniformly transporting the microbial bed are provided.

3 is a view showing an MLSS control system that proceeds through a sludge buffer tank.

Referring to FIG. 3, the sedimentation sludge layer transferred to the sludge buffer tank 23 is firstly ignited by the soil microorganisms and then passed through the first and second microorganism inflow valves 46a and 46b to the first and second aeration bases 30a , 30b. At this time, the control panel 50 controls the first and second microorganism inflow valves 46a and 46b based on the MLSS concentration measured by the first and second MLSS meters 36a and 36b, 30a and 30b can be maintained evenly. In addition, the sludge transferred to the first and second microorganism distribution tanks 42a and 42b can be controlled in conjunction with the inflow load of the flow rate control tank 10. For example, when the sludge transported to the first and second microorganism distribution tanks 42a and 42b is 2.0Q to 1.0Q, 0.5 to 0.25Q flows into the sludge buffer tank 23, A distribution of 1.5 to 0.75 Q inflow volume may be made.

FIGS. 4A and 4B are top and bottom plan views showing a sludge transport system and a transport system for collecting sludge in a wastewater treatment apparatus according to a preferred embodiment of the present invention. (For the convenience of explanation, the treatment system of excess sludge provided in the wastewater treatment apparatus is omitted in the upper plan view of FIG. 4A.)

4A and 4B, the semi-bath 21 and the sludge buffer tank 23 constituting the bioreactor 20 are constituted in series. The first and second aeration tanks 30a and 30b have a symmetrical arrangement structure in parallel with each other with the semi-tank 21 and the sludge buffer tank 23 interposed therebetween. As shown in Fig. 3A, the sludge conveying system is constructed such that sludge collected through the first and second sludge collectors 33a and 33b in the first and second aeration basins 30a and 30b is separated into first and second sludge And delivered to the first and second microorganism distribution tanks 42a and 42b by the drawing pumps 41a and 41b. In the first and second microorganism distribution tanks 42a and 42b, as described above. The sludge conveyed to the semi-tank (21) and the sludge buffer tank (23) is dispensed according to the process time and treatment conditions. The soil microorganisms that have been ignited in the microbial incubator 24 in the sludge buffer tank 23 are circulated to the first and second aeration tanks 30a and 30b.

As shown in FIG. 3B, first and second sludge collectors 33a and 33b are provided in the lower portion of the first and second aeration basins 30a and 30b in the longitudinal direction at the lower center. The first and second aeration unit devices 32a and 32b are disposed outside the first and second sludge collectors 33a and 33b. The sludge collected in the first and second sludge collectors 33a and 33b is transported to the first and second microbial distribution tanks 42a and 42b through the first and second sludge drawing pumps 41a and 41b.

Meanwhile, it is preferable that the capacity of the biological reactor 20 is designed by applying various kinetic constants such as microbial metabolism, SRT, F / M, etc. However, in the present invention, assuming that the influent concentration is a general sewage standard, The hydraulic retention time can be exemplarily set as shown in Table 3 below.

Item Concentration Category HRT (hr) BOD / CODMn 150 to 300/50 to 85 Semi-Jo (Anaerobic - Anoxic) (21) 3.55 SS 80 to 200 Sludge buffer (23) 1.0 inside and outside T-N 25-60 The first aeration tank 30a, 20-25 T-P 4 to 10 The second aeration tank 30b, 20-25

The example illustrated in Table 3 is an example of the hydraulic retention time of the bioreactor 20 depending on the sewage influent concentration. In order to realize the semi-tank 21 in a variable form according to time, the delay of the aeration time in the inflow process and the aeration process stage, which are subsequent processes immediately after the completion of the settling and discharging steps in the first aeration tank 30a, are important factors. The residence time illustrated in Table 3 may vary depending on site conditions and influent concentration, and a more detailed set of specifications is determined by reflecting various design factors.

5 is a view showing a sludge collector constructed in the first and second aeration tanks.

5, the first and second sludge collectors 33a and 33b installed at the lower portions of the first and second aeration bases 30a and 30b are constructed of a main main pipe 33-1 of a linear tube structure, A plurality of nipple-shaped auxiliary pipes (sludge suction ports) 33-2 are constructed so as to be able to collect the sludge as evenly as possible. And an air line 33-3 is connected to the end of the main main pipe 33-1 to prevent clogging of the pipe. The shapes and configurations of the first and second sludge collectors 33a and 33b are capable of coping with similar substitutes if they meet the intent of the present invention.

6 is a view showing a microorganism incubator constructed in a sludge buffer tank.

Referring to FIG. 6, the sludge buffer tank 23 is constituted by a microorganism incubator 24 capable of igniting general water treatment microorganisms into a group of soil microorganisms. The microorganism incubator 24 is constructed so as to be separated into an outer body 24-1 and a body inner cylinder 24-2. The upper plate of the microorganism incubator (24) is formed in a porous lattice shape to produce a structure in which the contact efficiency between the solid filter medium inside the incubator and the nutrient minerals is enhanced. The microorganism incubator 24 comprises a filter material inlet 24-4 connected to the ground so that the solid filter material can be replenished even on the ground. The filter material inlet tube 24-3 extending from the filter material inlet 24-4 to the outer body 24-1 has a structure that can be separated into a sock type. The filter material inlet tube 24-3 is provided with an air / water outlet 24-5. In the filtration inlet (24-4), a measurement scale is provided so as to facilitate measurement when supplementing the solid filter media and nutrient minerals or maintenance due to exhaustion of the solid filter media.

Aeration device 24-8 is provided at the lower part of the microorganism incubator 24 to form aerobic conditions so that the solid filter medium and the nutrient minerals can be mixed well with the microbial mixture without any additional stirring equipment. A compression spring 24-7 is formed on the lower portion of the body inner cylinder 24-2 so as to be movable in the vertical direction according to the weight as the inner cylinder lower support. Therefore, it is possible to judge the height of the measurement scale even on the ground. The lifting rails 24-6 are installed in the microorganism incubator 24 so that they can be moved in the vertical direction for front replacement and maintenance.

The cultured soil microorganism of the microorganism culturing unit (24) is effective to reduce odor induction by promoting chelation and stabilizing the sludge in the causticized state by mixing Pseudomonas including Pseudomonas, other actinomycetes, and mixed soil. Also, since the pollutants are highly polymerized, the first and second aeration tanks 30a and 30b have an effect of improving sludge settleability. The shape of the microorganism incubator (24) and the internal filter media can be addressed with similar substitutes if they meet the intent of the present invention.

As described above, the microorganism incubator (24) is a facility for underwater ignition of soil-borne microorganisms and improves the maintenance performance. In order to improve the maintenance, usually, a solid filter medium . The anaerobic digester 24-8 is installed at the lower part of the microorganism incubator 24 so that the solid filter medium and the nutrient minerals can be mixed well with the microorganism mixture without any additional stirring equipment. When the front is replaced, lifting can be performed according to the vertical lifting rails (24-6). A compression spring 24-7 is provided at the lower portion of the inner cylinder 24-2 of the microorganism culturing machine 24 so as to move in the up and down direction according to the weight of the inner filling material, And nutrient minerals can be easily identified.

Figure 7 is a diagram showing the first and second microbial distribution tanks.

7, the first and second microorganism distribution tanks 42a and 42b distribute the sludge withdrawn from the first and second sludge draw pumps 41a and 41b, respectively, To the buffer tank (23). A 'V' shaped groove is formed in the first and second microorganism distribution tanks 42a and 42b. The 'V' groove should be set to allow measurement. The first and second microorganism distribution tanks 42a and 42b are provided with air nozzles to which the maintenance air line is connected to prevent the solidification of the remaining sludge under an extremely low load, and can be manually operated if necessary. The form and structure of the first and second microbial distribution tanks 42a, 42b are capable of coping with similar substitutes if they meet the intent of the present invention.

In order to overcome the difficulty in controlling the amount of unbalanced microorganisms in the aeration tank, which is a disadvantage of the conventional continuous batch activated sludge process, the apparatus for treating wastewater according to the present invention as described above is divided into a semi-crude (anaerobic- In addition, it improves the altitude treatment efficiency more stably.

And a process cycle in which the load of the bioreactor is uniformly controlled by introducing it into the bioreactor 20 continuously during the inflow time. In addition, the function is variably controlled from the anaerobic tank to the anaerobic tank according to the time of the semi-tank (21), thereby maximizing the treatment efficiency. Especially, in the structure using two parallel aeration tanks, it is possible to variably supply the soil microorganisms of the sludge buffer tank to two parallel aeration tanks as needed, thereby improving the microbial balance, thereby maximizing the high treatment efficiency of the wastewater .

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention as defined by the appended claims and their equivalents. will be. Accordingly, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

The apparatus for treating wastewater according to the present invention can be applied to a private sewage treatment facility and a public sewage treatment facility which are constructed by the conventional continuous batch activated sludge process. It is possible to effectively perform the maintenance by automating the facility by automating the facility by reflecting it in the facilities where the new facilities are expected to take place and the public sewage facilities in rural areas. Furthermore, since the sewage water treatment apparatus of the present invention is excellent in nitrogen and phosphorus treatment efficiency in a biological reactor, it is possible to reduce the load on the downstream equipment and reduce the processing cost accordingly. In addition, it can be easily applied to the downstream facilities compared to the other methods, so it can be applied to the advanced treatment facilities of large-scale processing facilities.

10: Flow regulator 11: Flow regulator Agitator
12: raw water transfer pump 13: water level sensor
14: Raw water transfer system 20: Bioreactor
21: Semi Joe 22: Semi-assistant semi-
23: sludge buffer tank 24: microorganism incubator
25a: first inflow conveying system 25b: second inflow conveying system
26a: first aeration tank inflow valve 26b: second aeration tank inflow valve
30a: first aeration tank 30b: second aeration tank
31: aeration tank blower 32a: first aeration aerator device
32b: second aeration tank diffuser 33a: first sludge collector
33b: second sludge collector 34a: first upper water discharge device
34b: second high-water discharge device 35a: first surplus sludge pump
36b: second excess sludge pump 36a: first MLSS meter
36b: second MLSS meter 37a: first level sensor
37b: second level sensor 38a: first processing portion discharge valve
38b: second processing unit discharge valve 40a: first sludge transfer system
40b: second sludge conveying system 41a: first sludge drawing pump
41b: second sludge drawing pump 42a: first microorganism dispensing tank
42b: second microorganism distribution tank 45: microorganism return system
46a: first microorganism inflow valve 46b: second microbe inflow valve
50: control panel

Claims (6)

A flow rate adjusting tank (10) for adjusting the discharge amount according to an inflow amount of the incoming wastewater;
Semi-tank (21), which functions as an anaerobic and anoxic tank depending on time;
A raw water transfer system (14) for transferring the wastewater introduced into the flow rate adjusting tank (10) to the semi - furnace;
First and second aeration tanks (30a, 30b) connected in parallel with the semi-tank (21) to continuously treat the organic material and nitrogen oxide;
A sludge buffer tank (23) having a microorganism incubator (24);
First and second inflow conveying systems (25a, 25b) for conveying wastewater between the semi-tub (21) and the first and second aeration tanks (30a, 30b);
First and second sludge transfer systems (40a, 40b) for transferring sludge collected from the first and second aeration tanks (30a, 30b) to the semi-bath (21) and the sludge buffer tank (23);
A microorganism conveyance system 45 for conveying the positively-ignited microorganisms from the sludge buffer tank 23 to the first and the aeration tanks 30a and 30b; And
And a control panel (50) for performing overall control for advanced treatment of the wastewater,
First and second aeration tank inflow valves (26a, 26b) installed in the first and second inflow conveyance systems (25a, 25b); First and second sludge drawing pumps 41a and 41b installed in the first and second sludge transfer systems 40a and 40b for drawing sludge from the first and second aeration basins 30a and 30b; And first and second microbial distribution tanks 42a and 42b for transferring the sludge drawn through the first and second sludge drawing pumps 41a and 41b to the semi-tank 21 and the sludge buffer tank 23, The control panel 50 controls the balance of the sludge (amount of microorganisms) while the first and second aeration tanks 30a and 30b are operated and the amount of necessary microorganisms The first and second sludge drawing pumps 41a and 41b are controlled so as to be possible,
The first and second microorganism distribution tanks 42a and 42b are connected to a maintenance air line to prevent solidification of the 'V' shaped grooves with graduations so as to be measurable and solidification of the remaining sludge under extremely low load. Comprising a nozzle,
The first and second aeration bases 30a and 30b are provided with first and second sludge collectors 33a and 33b installed in the longitudinal direction at the lower center thereof and the first and second sludge collectors 33a and 33b, (Sludge inlet) 33-2 formed in the lower part of the main main pipe 33-1 and a plurality of nipple-shaped auxiliary pipes (sludge suction port) 33-2 formed in the lower part of the main main pipe 33-1, And an air line 33-3 connected to the end of the main main pipe 33-1,
The microorganism incubator 24 includes a detachable outer body 24-1 and a body inner tube 24-2, a filter material inlet 24-4 connected to the ground so that the solid filter material can be replenished, a filter material inlet 24-4, An air diffuser 24-3 extending from the outer cylinder 24-1 to the outer cylinder 24-1, a diffuser 24-8 installed below the cylinder 24-2 to form a breathing condition, A compression spring 24-7 for allowing the micro-organism incubator 24 to move in the vertical direction according to its weight as a lower support so as to judge the height of the scale, and the microorganism incubator 24, Includes a lifting rail (24-6) for easy movement,
After the sedimentation step and the discharge step are progressed in the semi-preparatory step 21, the microorganisms in the anaerobic condition are separated at a predetermined ratio in the second microbial distribution tank 42b to be separated into the semi-preparatory tank 21 and the sludge buffer tank 23, Wherein the sludge buffer sludge is returned to the sewage sludge tank. The method according to claim 1,
The flow rate regulator (10)
A flow rate adjusting tank stirrer 11 for stirring the introduced wastewater;
A raw water transfer pump (12) for introducing the stirred wastewater into the semi-bath (21) through the raw water transfer system (14); And
And a water level sensor (13) for sensing the level of the wastewater flowing into the flow rate adjusting tank (10) and providing the water level sensor to the control panel (50)
The control panel 50 keeps the processing load constant by controlling the number of revolutions per minute (RPM) of the raw water feed pump 12, the number of times of operation and the time according to the level detected by the water level sensor 13 Wherein the stepwise load mode is controlled to be variable so as to control the operation of the sewage sludge process in the continuous batch type activated sludge process using the sludge buffer tank. The method according to claim 1,
The semi-
And a semi-assistant swivel half (22) having a variable rotation speed under the control of the control panel (50). The apparatus for advanced treatment of wastewater according to the continuous batch type activated sludge process using the sludge buffer tank. The method according to claim 1,
The control panel
And a PLC program for controlling the process load by the measurement signal is built in the sewage sludge treatment system of the continuous batch type activated sludge method using the sludge buffer tank. The method according to claim 1,
The first and second aeration tanks (30a, 30b)
And has a symmetrical structure with respect to the semi-tub 21 and the sludge buffer 23 in series,
It is structured so as to facilitate the inflow in the semi-tub 21 and the sludge replenishment in the sludge buffer tank 23, and the valves attached to the respective tanks have a structure that facilitates control of transportation and inflow by mutual organic operation A system for the advanced treatment of wastewater in a continuous batch activated sludge process using a sludge buffer tank. The method according to claim 1,
The first and second aeration tanks (30a, 30b)
(34a) and (34b) having a structure in which natural drainage and pressure are applied in parallel so as to discharge a supersonic water using a minimum amount of water head by reducing an unnecessary dead space. An apparatus for advanced treatment of wastewater by continuous batch activated sludge process using sludge buffer.

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