KR100810598B1 - The organic sludge reduction facilities by means of electrolysis - Google Patents

Abstract

An apparatus for reducing organic sludge is provided to achieve high-efficiency reduction of the organic sludge, by controlling the flow rate of organic sludge, the operating condition of an electrolytic bath, etc., so as to perform electrolysis actively. An apparatus for reducing organic sludge reduces the organic sludge generated when removing organic matters and nutrient salt from sewage and wastewater by using an electrolytic bath. The apparatus comprises a solid-liquid separation bath(20), a bioreactor(10), an MLSS(Mixed Liquid Suspended Solid) meter(11) and an ORP(Oxidation-Reduction Potential) meter(12) disposed at one side of the bioreactor, surplus sludge flow rate-regulating valve(21) and a recovery sludge flow rate-regulating valve(22), and an automatic operation controller(30) controls an operating condition by using operating information received from the MLSS meter and the ORP meter. The electrolytic bath includes a direct oxidation bath and an indirect oxidation bath. The direct oxidation bath has an upflow type stirrer for maximizing the contact between the organic sludge and an electrolytic electrode. The indirect oxidation bath has a bubble unit for re-oxidizing and stabilizing peroxide materials contained in the electrolytic sludge. The electrolytic bath, the surplus sludge flow rate-regulating valve, the recovery sludge flow rate-regulating valve, a rectifier(50) are controlled according to information transmitted from the automatic operation controller. Further, a denitrification-dephosphorization process, an active sludge, an anaerobic-anoxic oxic process or an SBR process is performed in the bioreactor.

Description

The organic sludge reduction facilities by means of electrolysis

The present invention relates to an organic sludge reduction apparatus including an electrolysis tank, and more particularly, a microorganism constituting the organic sludge with highly active hypochlorous acid generated during electrolysis by passing the return sludge through the electrolysis unit during a biological treatment process. By breaking down the cells of the microorganism so that the cytoplasm in the microorganism flows to the outside, and the cytoplasm is re-formed in the biological treatment to increase the conversion rate to the inorganic material. In combination with the present invention, it is possible to achieve the target sludge reduction rate with the minimum energy without degrading the efficiency of the biological advanced treatment including the denitrification and dephosphorization process by the peroxidation of microorganism, which was the biggest problem in the reduction of organic sludge by conventional electrolysis. Of organic sludge reduction apparatus comprising electrolysis tank to be.

Until now, most of the wastewater treatment has been the most common biological treatment. Initially, the removal of organic matter was the main purpose. However, due to problems such as eutrophication, it is now a highly advanced process including removal of nitrogen and phosphorus. It is developing.

However, in such biological treatment, sludge is inevitably generated, and the sludge must be retreated to reduce the volume and stabilize the physical properties. Existing sludge treatment methods accounted for about 40% of the total wastewater treatment costs, and the final disposal basin of dewatered cakes was also banned in 2001. Liquid sludges began in 2008 and started in 2012. Since marine dumping is also to be banned, economical sludge disposal methods are urgently needed.

At present, sludge treatment can be classified into weight reduction and recycling.In weight reduction, there are treatment methods in bioprocesses using electrolysis, ozone, ultrasonic waves, pyrolysis, and metdol method, and treatment methods outside bioprocesses using digester, and composting in recycling. , Cover soil recycling, cement raw materials, lightweight aggregate, green soil, and fuel treatment.

Among the treatment methods, the recycling method is a method of treating sludge generated once, and the reduction should be developed to reduce the sludge as much as possible by reducing the sludge itself. In addition, the method within the biological treatment process that reduces the sludge generation itself will be more effective than the treatment using the digestion tank outside the biological process.

However, the sludge reduction method in the biological process as described above is to reduce the sludge by reducing the molecular weight of the sludge, and to promote the consumption of energy while re-sowing by the microorganisms in the microbial reactor, to reduce the sludge, the conventional sludge reduction method Was not widely used due to its low efficiency and poor economic efficiency. In particular, in the case of sludge reduction using electrolysis, the sludge reduction apparatus using electrolysis is reduced because the efficiency of biological advanced treatment including denitrification and dephosphorization by microorganism peroxidation during electrolysis is reduced. Improvements are needed for the introduction of biological advanced treatment.

In particular, there is a technique for reflowing the water into the bioreactor by electrolysis treatment in the prior art, but in this case there is a problem that advanced treatment is difficult because nitrification is inhibited because the treatment according to the water quality is not properly parallel.

The present invention solves problems such as lowering the efficiency of biological advanced processing such as inhibiting nitrification by the reduction of nitrifying bacteria by the peroxidation of microorganisms, which was the biggest problem of the conventional organic sludge reduction apparatus using electrolysis. It is an object of the present invention to provide a device that is applied to biological advanced processing including a dephosphorization process. That is, the present invention aims to achieve a high efficiency of organic sludge reduction compared to the same energy by actively electrolyzing by controlling the intensity and time of the current according to the treated water.

In another aspect, the present invention is to provide a technology that enables the decomposition of the electrolyzed organic sludge can be reused as a carbon source of biological advanced treatment, enabling more economical biological advanced treatment.

In order to achieve the above object, the present invention relates to an organic sludge reduction apparatus including an electrolysis tank, the organic sludge reduction and decomposition material of the organic sludge by using the electrolysis to the return sludge during the biological treatment process is a carbon source of biological advanced treatment The present invention relates to an organic sludge reduction apparatus including an electrolysis tank for reusing.

In terms of its structure, first, a solid-liquid separation tank is installed to remove suspended solids that can settle in the influent wastewater, and a bioreactor is installed to remove organic matter from the solid-liquid separated waste water. A mixed liquid suspended solids measuring instrument (MLSS METER) and an redox potential measuring instrument (ORP METER) capable of measuring oxidation and reduction potential are installed. Flow rate adjustment valve interlocked with the automatic operation control device is installed in the excess sludge discharge line to classify the sludge separated from the treated water into conveying sludge and surplus sludge, and flow rate adjustment valve interlocked with the automatic operation control device is installed in the return sludge line. The excess sludge is introduced into the bioreactor and the electrolysis tank. The electrolysis tank is composed of a direct oxidation tank including an electrolytic part through which the returned conveyed sludge is directly electrolyzed, and an indirect oxidation tank for the reoxidation and stabilization of surplus oxide material of the electrolyzed sludge. The direct oxidation tank is designed to supply DC power for electrolysis. The rectifier is connected. Automatic control operation device is installed to enable automatic operation according to the changed condition by interlocking with the MLSS METER, ORP METER, surplus sludge line and return sludge line flow control valve, and rectifier supplying DC power to the direct oxidation tank. .

delete

delete

delete

delete

delete

delete

delete

delete

When adopting the organic sludge reduction device including the electrolysis tank according to the present invention, it is possible to achieve the desired sludge reduction with minimal energy without inhibiting nitrification.

In particular, the present invention is a range that does not inhibit the nitrification according to the environment of the wastewater by fluidly electrolyzing by adjusting the current density and time by the rectifier and the timer adjusted by the automatic operation control device during the electrolysis by the electrolysis tank There is a characteristic that can achieve maximum sludge reduction at.

In other words, it is sent to the bioreactor to remove organic substances and nutrients from the introduced sewage and wastewater. The MLSS METER attached to the bioreactor gives the microbial amount in the bioreactor and the ORP METER measures the oxidation and reduction potential in the bioreactor and sends the operation information to the automatic operation control device. The biologically treated water from which organic substances and nutrients are removed by microbial metabolism in the bioreactor is transferred to the solid and liquid separation tank for separation of organic sludge and treated water containing a large number of microorganisms and separated into treated water and sludge. The treated water is discharged from the solid and liquid separation tank or transferred to the next step of treatment. The organic sludge separated from the solid and liquid separation tank is divided into surplus sludge and conveying sludge according to the adjustment of the flow adjusting valve of the excess sludge discharge line, and sludge that is directly returned to the microbial reactor according to the adjustment of the flow adjusting valve of the conveying sludge conveying line. And sludge reduction into sludge conveyed to the electrolysis tank. The flow regulating valve of the surplus sludge conveying line and the flow regulating valve of the conveying sludge conveying line are automatically adjusted by the automatic operation control device operated according to the signals of MLSS METER and ORP METER installed in the bioreactor.

In particular, the present invention in order to overcome the problem that the nitrification is difficult to perform the electrolytic reaction in the case of the conventional high-purity water treatment, in the mixed liquid suspended solids measuring instrument (MLSS METER) and redox potential measuring instrument (ORP METER) according to the conditions of the bioreactor By using the transmitted information, it was confirmed that the amount of sludge generated can be reduced by operating in the range where nitrification does not occur by adjusting the intensity and time of the electrolytic reactor in the automatic operation control device.

In particular, the present invention measures the microbial concentration in the bioreactor using the mixed liquid suspended solids (MLSS METER), if the microbial concentration is high by adjusting the current value of the rectifier high, and if the microbial concentration is low by adjusting the current value of the rectifier low Ensure that the concentration of microorganisms in the bioreactor is kept constant.

Also, the ORP METER is used to measure the oxidation and reduction potential in the nitrification tank. When the oxidation and reduction potential is high, the excess and return sludge flow rate adjusting valves are adjusted to increase the sludge flow rate into the electrolysis tank. In addition, if the oxidation and reduction potential is low, the sludge flow rate to the electrolysis tank is reduced by adjusting the surplus and return sludge flow rate adjusting valves, so that the operating conditions in the bioreactor can be adjusted to reduce the amount of organic sludge generated.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the advanced wastewater treatment process of the present invention.

1 is a representative view of the present invention, the organic sludge reduction electrolysis tank of the organic sludge reduction tank and the MLSS METER, ORP METER, surplus sludge control valve and the return sludge control valve of the bioreactor in the interlock operation of the automatic sludge reduction control system A process example is shown.

2 is a process example of the organic sludge reduction processing system in which the rectifier of the organic sludge reduction electrolysis tank and the MLSS METER, ORP METER, surplus sludge adjustment valve, and return sludge adjustment valve of the activated sludge tank are operated in conjunction with the automatic operation control device.

3 is a process example of the organic sludge reduction processing system in which the rectifier of the organic sludge reduction electrolysis tank and the MLSS METER, ORP METER, surplus sludge control valve, and return sludge adjustment valve of the denitrification bioreactor are operated in conjunction with the automatic operation control device. .

4 is a process example of an organic sludge reduction treatment system including an electrolysis device in the SBR process.

As shown in Figure 1 one aspect of the present invention

delete

A bioreactor 10 for electrolytically transporting the sludge electrolytically treated in the electrolysis tank 40 or the return sludge separated in the solid / liquid separation tank 20 to remove organic matter and nutrients;

A mixed liquid suspended solids measuring device (MLSS METER 11) and a redox potential measuring device (ORP METER 12) provided at one side of the bioreactor 10 to transmit information to the automatic operation control device 30;

A solid / liquid separation tank 20 for separating sludge from which the treated water and organic matter and nutrients are removed after the bioreaction;

A sludge separated from the solid / liquid separation tank 20 into a conveying sludge and a surplus sludge, and an excess sludge flow rate adjusting valve 21 and a conveying sludge flow rate adjusting valve 22 controlled by the automatic operation control device;

An automatic operation control device (30) for adjusting the strength and operating time of the current by using the operation information received from the mixed solution suspended matter measuring unit (MLSS METER) and redox potential measuring instrument (ORP METER);

An electrolysis tank 40 for electrolyzing the sludge to be introduced by the flow rate adjustment of the excess sludge flow rate adjustment valve 21 and the return sludge flow rate adjustment valve 22 according to the information received from the automatic operation control device 30;

It provides an organic sludge reduction device containing an electrolysis tank comprising a.

In addition, the electrolysis tank 40 is characterized in that it further comprises a rectifier 50 is adjusted by the automatic operation control device 30 to supply a DC power.

In addition, the process that can be used in the biological reaction tank 10 in the advanced sewage treatment system of the present invention, as shown in Figure 2, activated sludge (10-a), as shown in Figure 3, denitrification Process (10-b), and A2 / O (Anaerobic-Anoxic-Oxic) method or SBR method can be composed of any one. The SBR method includes an anaerobic tank in which the electrolytic transport sludge electrolyzed in the electrolysis tank and the return sludge separated in the solid-liquid separation tank are mixed to remove organic substances and release phosphorus; An oxygen free tank in which organic substances and nitrogen in the effluent discharged from the anaerobic tank are removed; And an aerobic tank in which untreated organic matter and ammonia in the sludge introduced from the anoxic tank are removed.

Next, as another embodiment of the present invention, as shown in FIG.

The return sludge separated in the solid and liquid separation tank 20 and the electrolytic return sludge electrolytically treated in the electrolysis tank 40 are introduced to remove organic substances and release phosphorus, and the organic matter of the effluent discharged from the anaerobic tank is discharged. An SBR bioreactor 10-c in which an anoxic tank in which substances and nitrogen are removed, and an aerobic tank in which untreated organic substances and ammonia are removed in the sludge introduced from the anoxic tank are removed in one reactor;
A solid / liquid separation tank 20 for separating sludge from which the treated water and organic matter and nutrients are removed after the bioreaction;

A mixed liquid suspended solids sludge concentration meter (MLSS METER) 11 and an ORP METER 12 provided at one side of the SBR bioreactor 10-c to transmit information to the automatic operation control device 30;

A sludge separated from the SBR bioreactor (10-c) into a conveying sludge and a surplus sludge, and an excess sludge flow rate adjusting valve 21 and a conveying sludge flow rate adjusting valve 22 controlled by the automatic operation control device;

Automatic operation control device 30 for adjusting the operating conditions using the operation information received from the mixed solution suspended matter measuring device (MLSS METER) and the redox potential measuring device (ORP METER);

An electrolysis tank 40 which electrolyzes the introduced sludge when the excess sludge flow rate adjustment valve 21 and the return sludge flow rate adjustment valve 22 are locked according to the information received from the automatic operation control device 30;

It provides an organic sludge reduction device containing an electrolysis tank comprising a.

In the present invention, the electrolysis tank 40, as shown in Figure 5, the direct oxidation tank with an upflow stirrer to maximize the contact between the organic sludge and the electrolytic electrode and the reoxidation of peroxide contained in the electrolyzed sludge And a channel type (open type) sludge reduction electrolysis tank including an indirect oxidation tank equipped with an acidizer for stabilization, or a perfusion type (sealed) sludge reduction electrolysis tank, as shown in FIG. 6.

The channel (open type) sludge reduction tank is divided into a direct oxidation tank and an indirect oxidation tank. The sludge conveyed to the electrolysis device in the conveying sludge is introduced into the lower part of the direct oxidation tank and moved upward. The agitator is installed in the direct oxidation tank to promote the contact between the sludge and the electrolytic electrode, thereby improving the direct oxidation efficiency. The sludge electrolyzed in the direct oxidation tank is transferred to the indirect oxidation tank for reoxidation and stabilization of peroxides contained in the electrolyzed sludge. At the bottom of the indirect oxidation tank, an acid generator is installed to promote stabilization of the peroxide.

In the case of the perfusion type, the sludge and the electrolytic electrode are contacted by the flow rate in the tube. The electrolytic electrode is concentrated at the front end of the tube, so that the direct oxidation is performed, and the indirect oxidation and stabilization is performed at the rear end of the tube. The rectifier for supplying the DC power to the electrolytic electrode can determine the strength of the DC power supply or the time difference operation by the timer by the automatic operation control device operated according to the signals of the MLSS METER and the ORP METER installed in the bioreactor. Electrolytic transport sludge, which has undergone direct and indirect oxidation tanks, flows back into the bioreactor with the wastewater and wastewater and undergoes biological metabolism.

7 is a cross-sectional view of the once-through (sealed) sludge reduction electrolysis tank electrolytic unit, and FIG. 8 is a cross-sectional view of the through-flow (sealed) sludge reduction electrolysis tank outlet. The electrode plate used in the process of removing organic substances and nutrients from the electrolysis tank is made of any one of a mesh, a cylindrical mesh, and a rod shape. The material of the electrode plate is a positive electrode (+ pole) to coat iridium oxide on a titanium base material. The negative electrode can be made of either titanium or stainless steel.

As described above, the present invention was able to solve the problem of lowering the efficiency of biological altitude treatment such as inhibiting nitrification by the reduction of nitrifiers by the peroxidation of microorganisms, which was the biggest problem of the conventional sludge reduction apparatus using electrolysis. It is possible to provide a device that can be applied to biological advanced treatment including denitrification and dephosphorization processes.

In addition, the present invention is economical operation is possible because it is possible to reduce the additional carbon source by reducing the amount of electrolyzed organic sludge, as well as the resulting decompositionally available material is reused as a carbon advanced biological treatment.

In addition, the present invention has a high concentration and dehydration in the case of the electrolytic surplus sludge, compared to the general biological sludge, there is no pathogenic and perishable bacteria in the cake after dehydration can minimize the secondary pollution at the final disposal.

The electrolytic transport sludge produced through the organic sludge reduction device including the electrolysis tank of the present invention does not reduce the efficiency of the biological advanced treatment by the peroxidation of microorganisms, and the decompositionally available material of the sludge after the electrolysis is a carbon source for biological advanced treatment. As it can be reused, it is a very economical sludge reduction device.

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

Example 1

As shown in FIG. 3, an organic sludge reduction apparatus including an electrolysis tank for organic sludge reduction in a denitrification and dephosphorization process bioreactor and a biological advanced treatment was used.

In order to compare the organic sludge reduction effect, the electrolysis tank was operated as an electrolytic group and the electrolysis tank was not used as a control.

Table 1 below shows the capacity and auxiliary facilities of each reactor for biologically advanced treatment, and Table 2 shows the influent sewage and the water environment of each reactor.

[Table 1] Capacity and Auxiliary Facilities for Each Reactor of Primary Experimental Device

[Table 2] Influent sewage and water environment of each reactor

The organic sludge reduction was measured by the accumulated accumulation of excess sludge produced under the condition that the MLSS concentration of the bioreactor was the same in the electrolyzer and the control group for a long time.

The results of the first experiment conducted at the Heavy Regeneration Center from August 2004 to January 2005 are shown in the table below.

[Table 3] Operation result of the first experimental electrolytic group (internal transfer rate 100%, conveyance rate 50%, current density 1.5A / ℓ)

[Table 4] Results of the first experimental control operation (internal transport rate 100%, return rate 50%)

As can be seen from the results of Tables 3, 4 and 9, the overall sludge reduction rate of the electrolytic group was about 45%, and the sludge reduction rate was higher than that of the control group.

Example 2

As shown in FIG. 2, an organic sludge reduction device including an electrolysis device in a general activated sludge process without biological advanced treatment was used.

In order to compare the organic sludge reduction effect, the electrolysis tank was operated as an electrolytic group and the electrolysis tank was not used as a control.

Table 5 shows the reactor capacity and auxiliary facilities of the general activated sludge process including the electrolysis organic sludge reduction device, and Table 6 shows the influent sewage and the water quality of each reactor.

[Table 5] Capacity and Auxiliary Facilities for Each Reactor of Secondary Experiment Equipment

[Table 6] Influent sewage and water environment of each reactor

The organic sludge reduction was measured by the accumulated accumulation of excess sludge produced under the condition that the MLSS concentration of the bioreactor was the same in the electrolyzer and the control group for a long time operation.

The results of the second experiment conducted from March 2006 to May 2006 at the Heavy Water Regeneration Center are shown in Table 7 below.

[Table 7] Second experimental electrolytic group operation result (conveyance rate 50%, current density 1.5A / ℓ)

[Table 8] Second Experimental Control Operation Result (Return Rate 50%)

As can be seen from the results of Tables 7, 8 and 10 above, the overall organic sludge reduction rate was about 45%, and the removal efficiency of BOD, CODcr, TN, TP, SS, etc. was almost the same. appear. As a result, it was found that the peroxidation of microorganisms during electrolysis does not have a significant effect on the biotreatment efficiency in the general activated sludge process, which is not a biologically advanced process including denitrification and dephosphorization.

Example 3

The results were measured by applying the electrolysis organic sludge reduction device to the A2 / O method, which is the most commonly applied biological biological treatment process. In order to compare the organic sludge reduction effect, the electrolysis tank was operated as an electrolytic group and the electrolysis tank was not used as a control. At this time, the aerobic tank was designed to be transported internally to the denitrification tank.

Table 9 shows the reactor capacity and auxiliary facilities of the biological advanced treatment process including the electrolytic organic sludge reduction device, and Table 10 shows the influent sewage and the water environment of each reactor.

[Table 9] Capacity and Auxiliary Facilities for Each Reactor of the Third Experimental Device

[Table 10] Influent sewage and water quality of each reactor in the 3rd experiment

The organic sludge reduction was measured by the accumulated accumulation of excess sludge produced under the condition that the MLSS concentration of the bioreactor was the same in the electrolyzer and the control group for a long time operation.

The results of the third experiment conducted from September 2006 to December 2006 at the Heavy Goods Regeneration Center are shown in the table below.

[Table 11] Operation results of the third experimental electrolytic group (internal transfer rate 100%, transfer rate 50%, current density 1A / ℓ)

[Table 12] Third Experimental Control Results (Internal Transfer Rate 100%, Return Rate 50%)

As can be seen in the results of Tables 11, 12, and 11 above, the total amount of organic sludge reduction in the electrolytic group was about 40%, and the removal rates of BOD, CODcr, T-N, T-P, and SS were almost similar.

As a result, even in the biological advanced treatment process, the microbial treatment efficiency is not reduced by the organic adjustment of the return sludge flow rate, the electrolytic return sludge flow rate, and the current density of the electrolysis tank according to the measurement of the MLSS and ORP METER of the bioreactor. It was confirmed that the organic sludge reduction rate can be achieved with the energy of.

1 is a representative view of the present invention, the organic sludge reduction electrolysis tank of the organic sludge reduction tank and the MLSS METER, ORP METER, surplus sludge control valve and the return sludge control valve of the bioreactor in the interlock operation of the automatic sludge reduction control system Process illustration.

2 is a process example of the organic sludge reduction processing system in which the rectifier of the organic sludge reduction electrolysis tank and the MLSS METER, ORP METER, surplus sludge adjustment valve, and return sludge adjustment valve of the activated sludge tank are operated in conjunction with the automatic operation control device.

3 is a process example of the organic sludge reduction processing system in which the rectifier of the organic sludge reduction electrolysis tank and the MLSS METER, ORP METER, surplus sludge regulating valve, and return sludge adjusting valve of the bioreactor in denitrification are operated in conjunction with the automatic operation control device.

Figure 4 is a process example of the organic sludge reduction treatment system including an electrolysis device in the SBR process.

5 is a channel (open type) sludge reduction electrolysis tank.

Figure 6 is a once-through (sealed) sludge reduction electrolysis tank.

7 is a cross-sectional view of the electrolytic part of the flow through (sealed) sludge reduction electrolysis tank.

8 is a cross-sectional view of the flow-through (sealed) sludge reduction electrolysis tank outlet.

9 is a comparative accumulation amount of excess sludge generation by operation day of the control group and the electrolytic group by the first electrolysis device (◆: control group, ▲: electrolytic group)

10 is a comparative accumulation amount of excess sludge generation by operation day of the control group and the electrolyzer according to the organic sludge reduction result by the secondary electrolysis device (◆: electrolysis group. ■: control group)

FIG. 11 is a comparative accumulation amount of excess sludge generation by operation days of the control group and the electrolyzer according to the organic sludge reduction result by the third electrolysis device (■: control group, □: electrolysis group)

Claims (10)

As a biological treatment method, the organic sludge which is inevitably generated when removing organic matter and nutrients from wastewater and wastewater is reduced by using an electrolysis tank. A solid / liquid separation tank 20 for separating the influent wastewater and sludge after the bioreaction to discharge the treated water; The electrolytic transport sludge electrolytically treated in the electrolysis tank 40 or the return sludge separated in the solid / liquid separation tank 20 are introduced to remove the sludge and the influent wastewater, which are removed by removing organic matter and nutrients. A bioreactor 10 for transferring to the liquid separation tank 20; A mixed liquid suspended solids measuring device (MLSS METER 11) and a redox potential measuring device (OPR METER 12) provided at one side of the bioreactor 10 to measure the microbial concentration and the redox potential in the bioreactor 10, respectively; The sludge separated from the solid / liquid separation tank 20 is separated into a conveying sludge and a surplus sludge, and a surplus sludge flow rate control valve 21 and a conveying sludge flow rate regulating valve which respectively adjust the flow rates of the separated conveying sludge and surplus sludge (22); Automatic operation control device 30 for adjusting the operating conditions using the operating information received from the mixed solution suspended matter measuring unit (MLSS METER, 11) and redox potential measuring instrument (OPR METER, 12); The electrolysis tank 40 is an indirect oxidation tank equipped with a direct oxidation tank equipped with an upflow stirrer for maximizing contact between the organic sludge and the electrolytic electrode and an acid generator for reoxidation and stabilization of peroxides contained in the electrolyzed sludge. It consists of a water channel type (open type) sludge reduction electrolysis tank or a perfusion type (sealed) sludge reduction electrolysis tank, the excess sludge flow rate adjustment valve 21 and the information according to the information received from the automatic operation control device (30) and Organic sludge reduction apparatus comprising an electrolysis tank, characterized in that the flow rate adjustment of the conveying sludge flow rate adjustment valve 22 and the current intensity and operating time of the rectifier 50 for supplying the DC power supply are adjusted. delete The method of claim 1, The bioreactor 10 is an organic sludge reduction device comprising an electrolysis tank, characterized in that any one selected from the denitrification process, activated sludge, A2 / O (Anaerobic-Anoxic-Oxic) method or SBR method. delete The method of claim 1, The shape of the pole plate used in the process of removing organic substances and nutrients in the electrolysis tank is made of any one of a mesh, a cylindrical mesh, a rod-shaped, the material of the pole plate is a positive electrode (+ pole) to coat iridium oxide on the titanium base material , Cathode (-pole) is an organic sludge reduction device containing an electrolysis tank, characterized in that using titanium or stainless steel. The method of claim 3, wherein The bioreactor 10-c used in the SBR method includes an anaerobic tank in which electrolytic transport sludge electrolyzed in the electrolysis tank and treated water introduced from the first solid-liquid separation tank are mixed to remove organic substances and release phosphorus; An oxygen-free tank from which organic substances and nitrogen of the discharged water discharged from the anaerobic tank are removed; And An aerobic tank in which untreated organic matter and ammonia in the sludge introduced from the anoxic tank are removed; Organic sludge reduction apparatus comprising an electrolysis tank, characterized in that consisting of a single tank. delete delete delete delete

Images