KR100781123B1 - A Bio-Mechanical Sludge Treatment System - Google Patents

Abstract

In the sludge treatment apparatus using the microorganism and the mechanical device according to the present invention, the sewage sludge and the polymer obtained through the sedimentation tank are put into a stirring tank, and the polymer and the stirred sewage sludge are pressed by a filter press to form an organic sewage sludge cake. The organic sewage sludge cake is automatically put into the organic waste high-speed extinction treatment device and heated at a predetermined temperature while maintaining a constant pressure, and stirred at a low speed so that the aerobic fermentation microorganism rapidly undergoes an exothermic exothermic reaction to improve its decomposition ability. By rapidly cooling the high temperature gas generated from the organic waste high-speed extinction treatment device, the gas component is treated by a water separator and a biofilter, and a small amount of organic matter such as nitrogen and phosphorus contained in the condensed water is treated with condensed water. The condensate passes through the activated sludge calculated for 7 days of HRT. On process, end has passed through the (Embrain Bioreactor) MBR tank is discharged to the composition below the BOD (Biochemical Oxygen Demand) 5ppm.

Sludge and chemical treatment stage. Means of departure. Extinction Product treatment stage. Operation operation stage.

Description

Sludge treatment system using microorganisms and mechanical devices {A Bio-Mechanical Sludge Treatment System}

1 is a schematic diagram showing a sludge treatment apparatus using a microorganism and a mechanical apparatus according to the present invention.

Figure 2 is an exemplary view showing the filtration principle of the filter press installed in the desulfurization means in the sludge treatment apparatus using a microorganism and a mechanical apparatus according to the present invention.

3a to 3d is an exemplary view showing a dehydration process by a filter press installed in the dewatering means in the sludge treatment apparatus using a microorganism and a mechanical device according to the present invention.

Figure 4 is a schematic diagram showing the treatment process of the extinction end and the product processing stage in the sludge treatment apparatus using a microorganism and a mechanical apparatus according to the present invention.

5a to 5c is a front view and a side view showing an organic waste destruction treatment apparatus installed in the extinction end in the sludge treatment apparatus using a microorganism and a mechanical apparatus according to the present invention.

Figure 6 is a processing system showing a treatment process of the organic waste destruction treatment apparatus installed in the extinction stage in the sludge treatment apparatus using a microorganism and a mechanical apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

1: Sludge Treatment Equipment 2: Glue and Chemical Treatment Stage 3: De-Method

4: extinction stage 5: product processing stage 6: automatic operation stage

10: sedimentation tank 11: digester 12: slurry storage tank

20: polymer melting tank 21: polymer storage tank 26: slurry chemical stirring tank

30: filter press 33: air compressor 34: high pressure pump unit

35: pneumatic cylinder 37: screw conveyor 38: crusher

39: belt conveyor 40: organic waste high-speed extinction treatment device

41: stirring vessel 42: condenser 43: aeration tank

44: blower 46: trace heater 47: line heater

The present invention relates to a sludge treatment apparatus using a microorganism and a mechanical device mainly to add microorganisms to the sludge (sludge) generated in the sewage treatment plant to be treated by a mechanical device.

To explain this in more detail, the sewage slurry and the polymer obtained through the settling tank are stirred by putting a stirring tank, the polymer and the stirred sewage slurry are pressed by a filter press to form an organic sewage sludge cake, and the organic sewage sludge cake is formed. It is automatically put into organic waste extinction device and heated at a predetermined temperature while maintaining a constant pressure to stir at low speed to allow aerobic fermentation microorganism to rapidly undergo aerobic exothermic reaction to improve decomposition ability. The gas is rapidly cooled and the gas is treated by a separator or biofilter, and a small amount of organic matter such as nitrogen and phosphorus contained in the condensate is treated with condensate. The condensate is HRT (retention time) for 7 days. Pass through the calculated activated sludge, and at the end, MBR (Embrain Bioreactor) It is intended to provide a sludge treatment apparatus using microorganisms and mechanical devices by discharging the discharge through the tank to less than 5ppm Biochemical Oxygen Demand (BOD).

The total amount of sludge produced in domestic sewage treatment plants is known to be 5,194 tons. The treatment methods are marine dumping (73%), landfilling (12.3%) and recycling (6.3%). Since 2004, the Ministry of Oceans and Fisheries Is regulated by restrictions on imports due to quota adjustments, and the International Maritime Organization (IMO) is tightening more restrictive policies in the future, so that dumping at sea, which has the easiest treatment cost and method, cannot be adopted globally. There is an urgent need for an alternative to deal with this.

In general, in order to incinerate after drying the sludge by heat, the water content of the sludge should be kept below 60%, and in order to recycle it, the moisture content should be kept below 20%. Since hot air is applied to dry, the energy is excessively used, and since the outside air is circulated, bad odors are generated.

In other words, the system adopted by major sewage treatment plants in Korea mainly adopts incineration treatment.

The conventional incineration system is an incineration system installed in a copper sewage treatment plant, which stores or transports sludge dehydrated by a dehydrator to a sludge dryer (dryer), incinerates in a fluid filling furnace, preheats by an air preheater, The preheated sludge is discharged through the waste heat boiler, the incinerator ash processing facility, the reactor and the bag filter.

However, this type of incineration (system) requires a supplementary fuel to evaporate water when sludge has a high moisture content (85%). Therefore, a constant moisture content (50 to 60%) is required before steam is injected into the incinerator. After indirect heating to maintain, it should be incinerated (approx. 850 ℃), and the preheating of the air is supplied to the incinerator by heating the air at room temperature up to about 600 ℃, and supplementary fuel is supplied for 10 ~ 20 hours per hour for energy recovery and dryer. There is a problem with using liters.

Another incineration system is the incineration system adopted by the Gumi Sewage Treatment Plant, which stores or transports the sludge dewatered by the dehydrator to a sludge dryer (dryer), incinerates the fluid incinerator, and preheats the air. And second), and the dust is collected by the cyclone, the incineration ash treatment facility, the electrostatic precipitator, and the wet precipitator, and then discharged.

However, since it adopts the integrated incineration method, when the calories are insufficient, the auxiliary fuel should be put in and maintained at a constant combustion temperature. Therefore, the auxiliary fuel is consumed a lot (about 21 liters per hour or more), which causes a lot of operating costs. .

Another incineration system is the incineration system installed in Gwangju sewage treatment plant, which stores or transports sludge dewatered by dehydrator to sludge dryer (dryer), incinerates in fixed stir incinerator, and hot air passes through incinerator It is to be discharged through cyclone, a moisture cleaner, and deodorization, and the exhaust gas generated during incineration is directly mixed with sludge, and the water content of the sludge is reduced from 80% to 30%. It is characterized by an incineration treatment at a high temperature of.

However, since it adopts a direct drying method, bad odor is severely generated, and incineration at a high temperature requires a large amount of auxiliary fuel (via diesel) per hour (about 267 liters), resulting in a high cost of operation (operation).

In addition, the sludge is generated in a large amount by the microbial treatment method, and the amount is increasing every year.

Sewage sludge is the main substance of microorganisms of very small size (2㎛), and since microorganisms contain a lot of moisture inside the cell wall, it is not easy to remove them. Leachate and odor is generated, there is a problem that a pest and the like to pollute the environment.

In recent years, methods of using solid sludge, compost, and feed have been actively studied using the characteristics of waste sludge.

The present invention is to provide a sludge treatment apparatus using a microorganism and a mechanical device that can solve the above problems.

In the present invention, the sewage sludge and polymers obtained through the settling tank are stirred by putting a stirring tank, the polymer and the stirred sewage sludge are pressed by a filter press to form an organic sewage sludge cake, and the organic sewage sludge cake is organic waste high speed. It is automatically put into the extinction processing device and stirred at low speed while warming to a predetermined temperature while maintaining a constant pressure state so that aerobic fermentation microorganisms rapidly undergo aerobic exothermic reaction to improve the decomposition ability. The hot gas is rapidly cooled to treat gaseous components by a separator or biofilter, and a small amount of organic matter such as nitrogen and phosphorus contained in the condensate is treated with condensate, and the condensate is calculated for 7 days of HRT. Process through one activated sludge tank, and at the end, pass through an MBR (Embrain Bioreactor) tank The purpose of the present invention is to provide a sludge treatment apparatus using microorganisms and mechanical devices as a device for discharging by discharging to less than 5ppm Biochemical Oxygen Demand (BOD).

Another object of the present invention, by eliminating the pre-treatment dehydration process, which is essential in the composting and sampling process, to prevent the secondary contamination by high concentration desorption, and finely crushed solids separated and dehydrated sludge by filter press A fast aerobic fermentation process is carried out by the extinction reactor to generate a reaction product made of water, gas such as carbon dioxide and mercaptan, and the gas is treated by a biofilter to be diluted with outside air to be supplied as aerobic activation air. In addition, the moisture contained in the gas is to provide a sludge treatment apparatus using a microorganism and a mechanical device that can recover the condensed water to significantly reduce the weight after the treatment of sewage sludge.

Still another object of the present invention is to vibrate the internal microorganisms and the fillers and micronized organics and inorganics of the extinction reactor after operating a constant cycle, to reuse the microorganisms and the fillers, to compensate for the shortage, Inorganic materials can be used as compost or cover material, and condensate is treated by an aerobic fire extinguisher to provide a sludge treatment apparatus using microorganisms and mechanical devices that can be reused or discharged based on effluent quality.

The above and other objects of the present invention,

Slurry processing unit (2-1) for injecting sewage slurries obtained through sedimentation and digestion, chemical input unit (2-2) for supplying chemicals, and sewage slurries and chemicals supplied from them are coated with a chemical A slurry and a chemical treatment stage (2) comprising a stirring section (2-3) to be stirred at 26);

Chemical and stirred sewage sludge are pressed by the filter press 30 to form an organic sewage sludge cake 30-1, and the organic sewage sludge cake 30-1 is crushed by a crusher 38 to form a fixed size. Dismantling means 3;

 A stirring blade 41-4 for repair is installed inside the stirring tube 41 by the rotary shaft 41-3, and a trace heater 46 is installed on the outer surface of the stirring tube 41 to warm the line heater 47. ) And an organic sewage sludge cake 30-1 formed in the dewatering means 3 in the conventional organic waste high-speed decay processing apparatus 40 capable of supplying air heated by the blower 44 to the stirring tube 41. A) and automatically put the organic sewage sludge cake (30-1) into the agitation fermentation microorganisms while keeping the inside of the stirring barrel 41 at a pressure of 0.1 to 0.2 bar and warming to a temperature of 40 ° C. or lower. An extinction end (4) to rapidly proceed the exothermic exothermic reaction of the decomposition ability;

The high-temperature gas generated by the organic waste high-speed extinction treatment device 40 of the extinction stage 4 is rapidly cooled while passing through the water separator 51 to separate condensate and gas gas containing a small amount of organic matter such as nitrogen and phosphorus. The product treatment stage (5) for separating and treating, and purifying the BOD 5ppm or less while adding microorganisms by measuring the turbidity of the condensate; It is achieved by the sludge treatment apparatus 1, characterized in that formed to include.

delete

The above and other objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 to 6 show a specific implementation of the sludge treatment apparatus 1 according to the present invention.

Figure 1 is a schematic diagram showing a sludge treatment apparatus 1 according to the present invention, Figure 2 is an exemplary view showing the principle of filtration of the filter press installed in the removal means in the present invention, Figures 3a to 3d is removed from the present invention Figure 4 is an exemplary view showing the dehydration process by the filter press installed in the means, Figure 4 is a schematic diagram showing the treatment process of the extinction end and the product treatment stage in the present invention, Figure 5a to 5c is an organic to be installed in the extinction end in the present invention Figure 6 is a front view and a side view showing a high-speed waste treatment apparatus, Figure 6 is a system flow diagram showing a treatment process of the organic waste destruction treatment apparatus installed in the extinction end in the present invention.

The sludge treatment apparatus 1 according to the present invention includes a slurry and a chemical treatment stage 2 for agitating sewage sludge and chemicals, as illustrated in FIG. 1; Degassing means (3) for pressing chemicals and stirred sewage sludge to form organic sewage sludge cakes (30-1); An extinction stage (4) in which the organic sewage sludge cake (30-1) is stirred at a low speed while warming to a predetermined temperature in a constant pressure state, and the aerobic fermentation microorganism rapidly undergoes an exothermic exothermic reaction to improve the decomposition ability; By rapidly cooling the high temperature gas generated in the extinction stage (4), the gas component is treated by a separator or biofilter, and a small amount of organic matter such as nitrogen and phosphorus contained in the condensate is treated with condensate, and the turbidity of the condensate is measured. A product processing stage (5) for purifying while additionally adding microorganisms at a suitable time (to grasp); The operation operation step (6) for automatically controlling the operation of the process; formed into large divided.

As shown in FIG. 1, the slurry and the chemical treatment stage 2 for stirring the sewage slurry and the chemical are stirred with the slurry treatment unit 2-1 and the chemical input unit 2-2 and the slurry and the chemicals supplied from them. It was formed by the stirring section 2-3.

Slurry treatment unit 2-1 is connected to the settling tank 10 and the digestion tank 11 and the slurry storage tank 12 for storing the slurry supplied from the sludge generated from the sewage treatment plant to obtain only the slurry precipitated In particular, in the slurry storage tank 12, a stirring device in which the stirring blade 14 is operated (rotated) by the geared motor 13 is installed to enable stirring of the stored slurry, and the slurry supply pipe of the slurry storage tank 12 is provided. The valve V3 and the pump P3 were installed in (12-1) so that the supply of slurry could be controlled (controlled).

The chemical injection unit 2-2 is provided with the chemical dissolution tank 20 and the chemical storage tank 21 side by side to communicate with each other by a pipe (supply pipe), each of the chemical dissolution tank 20 and the chemical storage tank 21 is geared Each of the agitator blades 23 and 25 is operated (rotated) by the motors 22 and 24, respectively, and a supply pipe for supplying the chemicals dissolved in the chemical melting tank 20 to the chemical storage tank 21 ( 20-1) and valves V1, V2 and pumps P1 and P2 are respectively installed in the chemical supply pipe 21-1 for supplying the chemicals from the chemical storage tank 21 to the slurry-chemical stirring tank 26. To supply the medicine smoothly and precisely.

The stirring unit 2-3 for stirring (mixing) the slurry and the chemicals and supplying them to the filter press 30 of the decanting unit 3 is formed by a geared motor 27 inside the slurry-chemical stirring tank 26. Rotating (operating) stirring blades (28) were installed so that the slurry and the chemicals supplied through the slurry supply pipe (12-1) and the chemical supply pipe (21-1), respectively, so as to sufficiently form the flocs (mixing) In the chemical mixing slurry supply pipe 26-1 of the slurry-chemical stirring tank 26, a valve V4 and a pump P1 were installed to control (control) the supply of the slurry mixed with the chemicals.

The degassing means 3 which presses the chemical mixing slurry supplied from the slurry and the stirring part 2-3 of the chemical processing stage 2, and shape | molds into the organic sewage sludge cake 30-1 was formed as follows.

A separate air compressor (33) and a pneumatic cylinder (35) operated by a pneumatic pump unit (34) for depressing and pressing the supplied chemical mixing slurry to form the sewage sludge cake (30-1). Compressor), and a slurry inlet pipe (31) provided with a valve is provided on the supply side of the filter press (30) and the chemical mixture slurry supply pipe (26-1) of the slurry-chemical stirring tank (26). It was connected to supply the drug mixture slurry, and the filter press 30 was installed in the filter feed (32: Filfrate Feed) to allow the filter press 30 to operate smoothly.

Since the filter press 30 as described above is a widely used mechanical device, a detailed description of the configuration and operation principle will be omitted.

On the discharge side (discharge port) of the filter press 30, a conventional screw conveyor 37 is installed to transport the sewage sludge cake 30-1 formed and discharged from the filter press 30 to a predetermined position. In the discharge end of the screw conveyor 37, a conventional crusher 38 is mounted to discharge and discharge the sewage sludge cake 30-1, which is supplied (transmitted) to a predetermined size (about 3 mm or less). In the discharge end of the crusher 38, a normal belt conveyor 39 is installed to supply the organic waste quenching device 40 of the extinction end 4.

The organic waste high-speed extinction treatment device 40 of the extinction stage 4 which allows the aerobic fermentation microorganism to rapidly progress the aerobic exothermic reaction in the organic sewage sludge cake 30-1 to improve the decomposition ability is developed by the present invention. It was formed as follows as previously registered in Patent No. 10-515346.

The stirring cylinder 41, the condenser 42, and the aeration tank 43 were provided in the upper side of the support frame 49 in which the usual caster (wheel) was attached to the bottom surface.

A rotary shaft 41-3 having a plurality of stirring blades 41-4 was installed on the inner center line of the stirring tube 41 having the inlet 41-1 having the cover 41-2 formed thereon. On the end of the rotating shaft (41-3) protruding to one side of the stirring tube 41, a sprocket (41-5) is attached to the sprocket (41-6) mounted on the rotating shaft of the motor (41-7) It was connected to the chain (not shown specifically) to rotate the stirring blade (41-4).

A trace heater 46 was installed on the outer surface of the stirring tube 41 to operate when the internal temperature of the stirring tube 41 dropped below the set temperature (limit temperature) so as to be maintained at the set temperature, and the blower 44 In order to supply air to the inside of the stirring tube 41 during operation, the line heater 47 was installed to operate automatically according to the internal temperature condition of the stirring tube 41 and through the blower 44. The air to be supplied is preheated to a predetermined temperature.

The condenser 42 receives steam generated inside the stirring tube 41 through the steam pipe 48 provided on the upper side of one surface of the stirring tube 41, and the internal temperature of the stirring tube 41 is set to the set temperature ( When the temperature rises above the suggested temperature, it operates and cools below the set temperature so that it operates automatically according to the internal temperature of the condenser.

The aeration tank 43 is provided with partition plates having different heights so as to flow from one side to the other side, and each partition chamber has turbidity measuring means 43-1 so as to measure the turbidity of the water inside from outside. .

Oxygen supply control means 45 is to control the supply and shut-off of oxygen to the aeration tank 43 by using an automatic valve such as a solenoid valve, the pipe and line heater 47 connected to the aeration tank 43 The solenoid valves were installed on the pipes connected to the valves so that the solenoid valves could be operated (opened and closed) according to the oxygen demand.

The hot gas generated in the extinction stage 4 is rapidly cooled to treat gaseous components and condensed water by a separator or biofilter, and the turbidity of the condensed water is measured (understood) to purify while adding microorganisms at an appropriate time. The product treatment stage 5 is a gas-liquid separator (51: Gas-Liquide Separator) for separating the gas body containing water vapor supplied from the organic waste high-speed extinction treatment apparatus 40 into a gas and condensate, and the separated gas A gas purifier (52: Bio-Filter) that dissolves and removes odorous components by a microorganism, converts them into a colorless and odorless state, and separates condensed water into a first anoxic tank, a second and a third tank, and a fourth reactor (precipitation tank). In order to form a condensate treatment (54: Treatment Apparatus for Condensed Water) including a blower (56) to be sequentially discharged after the microbial treatment and precipitation to the supernatant.

As illustrated in FIG. 6, the gas separator 51 is installed by passing a circulation coil inside a chamber through which cooling water is circulated, and passing the condenser again to pass the gas. (Gas) and condensate (Liquide), Cooling Water (Cooling Water) is circulated by a feed pump (Ciller) equipped with a compressor (Compressor) and a radiator (Radiator) The zoom ensures that the chamber remains cool at all times.

Gas purifier (52: Bio-Filter), the deodorizing device inside the deodorizing microorganisms immobilized, that is, a microbial carrier prepared by mixing a hydrophilic rock wool (Hydrophilic rook wool) and earthworm stool, the water separator (41: Gas-Liquide Separator) is used to decompose and remove the odor and color of the gas that is separated and supplied.

Condensed water treatment (54: Treatment Apparatus for Condensed Water) is an application of A / O Process method, and the inside of the treatment tank is divided into four reaction tanks to the first anoxic tank, the second and third tanks, and the fourth reaction tank (sedimentation tank). The condensate formed was treated by the microorganisms (K2 microorganisms) in the first anoxic tank and the second and third tanks, and precipitated in the fourth reaction tank (sedimentation tank) to be discharged after being converted into supernatant.

Particularly, in the second and third aeration tanks, organic decomposition and nitrification were performed, and the sludge precipitated in the fourth reaction tank (sedimentation tank) was returned to the second and third tanks, and the treated water was returned to the first by internal circulation. It was introduced into an anoxic tank to allow organic decomposition and denitrification.

In addition, the fourth reaction tank (precipitating tank) was operated as granular activated carbon and was able to respond even if the discharged water quality standard required by HRT control was changed.

The operation driving stage 6 which automatically controls the operation of the processes adopts a PLC control method that is easy to measure and count, and thus, can program the optimal operating conditions to provide the sophistication, reliability, and convenience of operation. In addition, it can be switched manually by driving conditions and driver's request.

In particular, in case of automatic operation, it is operated by the signal input by PLC control method, but it is blow operation time, 1 ~ 2 minutes change of fresh air during operation for a predetermined time (10 minutes), stirrer operation, line and trace. Heat, condensate treatment pump (Pump), blower (chiller) and refrigerating chamber (Chiller) can be operated under the optimal operating conditions. During manual operation and operation, the main unit and auxiliary equipment can be selectively operated.

Hereinafter, the operation relationship of the sludge treatment apparatus 1 according to the present invention will be described.

The operation of the sludge treatment apparatus 1 according to the present invention is operated sequentially by the instruction of the operation operation stage (6).

Briefly summarized the operation process of the sludge treatment apparatus 1 according to the present invention, sewage sludge (water content 97 ~ 98%) → filter press (water content 67 ㅁ 3%) → sewage sludge cake → feeder (feeder) → high speed Dissipation separator (separator) → water separator (after separated into gas, water, and minerals) is operated in order, and the gas separated by the water separator is treated in the order of gas processor → inline heater blower → high speed extinction reactor. Moisture is converted into water by the condensate treatment machine and discharged. The minerals are sorted by an automatic cleaner (vibration screening set) and used as cover material, filling material, and composting aid.

The slurry and chemical treatment stage 2 operates as follows.

Slurry generated in the sewage treatment plant is added to the settling tank 10 of the slurry treatment unit 2-1, and left for a predetermined time to carry out the usual settling process, and the slurry obtained from the settling tank 10 is moved to the digestion tank 11 for normal operation. Fire extinguishing process, the slurry obtained through the settling tank (10) and the digester (11) is introduced into the slurry storage tank (12), and the stirring blade (14) is operated by operating the geared motor (13) of the slurry storage tank (12). Rotate to prevent the charge-filled slurry from solidifying.

Into the chemical dissolving tank 20 of the chemical input part 2-2, the stirring blade 23 is rotated by the geared motor 22 while the polymer is charged and filled as a coagulation solution so that the coagulation solution (former) is not solidified. Dissolve and operate the valve V1 and the pump P1 of the chemical dissolution tank 20 to supply the dissolved flocculation solution (polymer) to the chemical storage tank 21, and the geared motor of the chemical storage tank 21 in which the aggregation solution is stored. The stirring blade 25 is rotated by 24 to keep the stored flocculation solution (polymer) from flocculation (solidification).

The valve V3 and the pump P3 of the slurry storage tank 12 and the valve V2 and the pump P2 of the chemical storage tank 21 are operated for a predetermined time, respectively, to store the slurry and the chemical storage tank stored in the slurry storage tank 12. The flocculation solution (former) stored in (21) was supplied to the slurry-chemical stirring tank 26 of the stirring section 2-3 by the amount set to be necessary for every cycle treatment, and the slurry and the flocculation solution (polymer) were filled. The geared motor 27 of the prepared slurry-chemical stirring tank 26 is operated to rotate the stirring blades 14 to stir the slurry and the flocculating solution (polymer), and the mixture is stirred for a sufficient time to form a floc.

The chemical mixture slurry that is sufficiently stirred with the slurry and the flocculating solution (polymer) is operated by operating the valve V4 and the pump P4 of the chemical mixture slurry supply pipe 26-1 of the slurry-chemical stirring tank 26. It is supplied to the filter press 30 of the deaeration means 3 through the inflow pipe 31.

The filter press 30 of the degassing means 3 into which the chemical mixing slurry is introduced through the slurry inlet pipe 31 is formed by a pneumatic cylinder 35 of the pneumatic pump unit 34 and a separate air compressor 33 (compressor). It works.

It is supplied to the filtration chamber of the filter press 30 by the supply pressure (5-7 kg / cm <2>) of the pump P4 provided in the chemical | medical agent mixing slurry supply pipe 26-1, and interference by the filter filtration and sludge layer by a filter cloth. The solid-liquid separation and dehydration are performed at the same time by filtration, and the dehydration principle is dewatered as smaller particles are collected by the sludge particles stacked after being filtered by the filter cloth as illustrated in FIG. 2.

The filtration theory can be briefly expressed as follows by Darcy's Law.

The flow rate Q of the desorption liquid produced through the filtration membrane is

이다.

to be.

           Q: Desorbent flow rate, K: Permeability coefficient, A: Filtration area

           ΔP: pressure drop of filtration membrane, μ: viscosity coefficient L: filtration membrane thickness

In order to increase the sedimentation and filtration in the above, centrifugal force, compressive force, suction force, vibration, etc. are given.

이다.

to be.

             ΔP: pressure drop L: thickness of cake

             Vs: Velocity component under inlet and outlet average pressure

             μ: viscosity ε: cake porosity

             Dp: diameter of solid particles

As illustrated in FIGS. 3A to 3D, the filter press 30 generates the dewatered cake, that is, the sewage sludge cake 30-1, while repeatedly performing the bonding, pressing, pressing and desorption processes.

Joining process of Fig. 3a: Each filter plate is combined while being battery-operated by the operation of the hydraulic cylinder 35 in the state wrapped in the filter cloth, that is, a space, that is, a chamber is formed.

3b indentation process: when the feed pump P4 is supplied with a chemical mixture slurry in the form of a floc in a state in which a slurry and a flocculant (polymer) are mixed (5 bar), solid particles larger than 1 to 5 μm are trapped. It remains inside, and the liquid is discharged to the outside of the filter plate, and when press-fitted for about 30 to 40 minutes, the liquid is filled by the volume corresponding to the volume of the chamber.

Compression process of FIG. 3c: When the pressure water is supplied at a pressure of 15 to 16 bar into the pressurized fluid supply port inside the filter plate, the inside of the filter is shrunk to squeeze to reach a lower moisture content.

Desorption process of FIG. 3D: The hydraulic cylinder 35 is operated in reverse to disassemble while the filter plate is retracted, and the dewatering cake, that is, the sewage sludge cake 30-1, which is formed in the inner chamber, falls down and is discharged. do.

The sewage sludge cake 30-1 formed and dropped by the filter press 30 is transferred by the screw conveyor 37 to be crushed by the crusher 38, and according to the speed of the screw conveyor 37, The amount supplied to 38, i.e., the amount to be broken by the shredder 38, is determined and supplied to the extinction end 4 by the supply conveyor, i.e., the belt conveyor 39, after the shredding.

In particular, the sewage sludge mass 50mm × 50mm can be sufficiently extinguished within 24 hours, but in order to improve the efficiency, when the double slice cutting type crusher is installed in the lower part of the hopper, the particle diameter is 3mm. It can be crushed to be below.

As the sludge has 67% water content and 300mm × 300mm, it is difficult to break by hand because it keeps strength that is hard to be broken by hand, so that aerobic conditions can be improved and microorganism can easily and effectively penetrate. For this reason, it is preferable to break the thickness to 3 mm or less.

After crushing, it can be supplied to the organic waste high-speed decay treatment apparatus 40 of the extinction end 4 using a vibration or screw feeder.

The organic waste high speed extinction processing device 40 of the extinction stage 4 operates as follows.

Particles of the lower sludge cake 30-1 crushed by the crusher 38 are transferred by the belt conveyor 39 to be introduced into the stirring tube 41 through the inlet 41-1, and the stirring tube ( The motor 41-7 installed in 41 is operated to rotate the rotary shaft 41-3 connected to the sprockets 41-6 and 41-5 by a chain and stir at low speed (stirring) by the stirring blade 41-4. Speed: 4 ~ 5rpm, stirring time: 10 min / hr), the trace heater 46 is operated to warm the internal temperature of the stirring tube 41 to a temperature suitable for the microorganisms to operate.

The heat generated by operating the line heater 47 in order to warm to the high temperature extinguishing temperature range at the beginning of operation is forced by the blower 44 to the inside of the stirring tube 41 at a pressure of 0.1 to 0.2 kg / cm 2. By supplying, the aerobic high temperature fermentation microorganisms in the processing apparatus can rapidly undergo aerobic exothermic reaction.

Stirring cylinder 41 is formed in a cylindrical shape and the air supply is selectively carried out according to the operating conditions in the lower double jacket or axial flow type, it is preferable to supply at a pressure of about 0.1 ~ 0.2bar.

The mass balance according to the extinction reaction is as follows.

○ Mass balance (Mass Balance),

afx + be = −0.076bx + (0.03 + 0.4g) afx + k

In the above formula, a: sewage sludge input amount [kg]

             b: Microbial regulator amount (kg)

             x: days elapsed [day]

             e: specific gravity of microbial regulator

             f: Sewage sludge specific gravity

             g: specific gravity of condensate

             k: other consumption (kg)

○ Experimental Equation of Remain Quantity

z = 0.076ax + b (1-0.007x) .

     In the above formula, z: residual amount in the extinction reactor [kg]

                  a: Sewage sludge dosage [kg]

                  b: Microbial regulator amount (kg)

                  x: days passed (kg)

Oxidation heat is generated as the exothermic exothermic reaction of the microorganism proceeds, and at this time, the internal temperature of the stirring tube 41 is increased, and when the internal temperature of the stirring tube 41 is raised above 40 ° C. As a result, the operation of the line heater 47 is automatically stopped and the intermittent blowing (10 min / hr) is performed to supply the air necessary for extinguishing.

When the stirring is carried out as described above, steam is generated inside the stirring tube 41, and the generated steam rises and is supplied to the condenser 42 through the steam pipe 48, and the condenser 42 enters the steam. Cool down to water.

The contaminated (unpurified) water converted by the condenser 42 is sent to the aeration tank 43, and the water (condensed water) flowing into the aeration tank 43 is transferred to the first anaerobic tank and the second and third tanks. K2 microorganisms) are purified (treated), precipitated in a fourth reaction tank (sedimentation tank), converted into supernatant water, and then discharged to use as waste water.

In particular, since each of the first anaerobic tanks, the second and third tanks, and the fourth reaction tank (sedimentation tank) of the aeration tank 43 is provided with a turbidity measuring means 43-1, the first anoxic tanks, the second and third tanks, respectively. And the turbidity of the fourth reaction tank can be measured from the outside, and the decomposition ability of the microorganism can be measured according to the measured turbidity, so that when the degradation ability is reduced, new microorganisms are introduced to restore the decomposition ability. 43) Acidic and neutral chemicals can be added to control the acidity of water.

In addition, the gas remaining through the condenser 42 is forcibly sent to the inside of the stirring tube 41 by the blower 44. In order to maintain the line heater 47 at a suitable temperature at which microorganisms are most fully active, After letting it pass through, it is added to the stirring tube 41 again.

As described above, the microorganisms that are active in the stirring barrel 41 and the aeration tank 43 inevitably require a certain concentration of oxygen, so the oxygen concentration is detected by the sensor to detect a low oxygen concentration. It operates by forcibly injecting oxygen (outside air).

Gas and water vapor generated while the sewage sludge cake 30-1 is biologically decomposed inside the stirring tube 41 are floated due to the specific gravity difference, and organic waste high speed is moved through a moving pipe (not specifically shown). In the extinction processing device 40, the water separator 51 of the product processing stage 5 is obtained.

The product treatment stage 5 includes a water separator 51 for condensing moisture by rapidly cooling a high temperature gas supplied from the organic waste rapid destruction treatment apparatus 40, and a gas purifier for treating gas components using a biofiller. (52), and a condensate water treatment unit 54 for treating a small amount of nitrogen and organic matter contained in the condensate by aerobic microorganisms, these are as follows by the process illustrated in Figs. Works.

Gas-Liquid Separator (51) operates as follows:

When a high temperature fermentation reaction occurs in the stirring barrel 41 of the organic waste high-speed extinction processing device 40, a large amount of steam and gas are generated, and the generated steam and gas are moved upwards inside the stirring tube 41. , The gas body including water vapor is introduced into the water separation device 51 through a pipe (not specifically shown).

The water separator 51 is a heat exchange (operating temperature: 5 ~ 10 ℃) by a heat exchange method to separate the water in the gas and water mixed gas state to separate the condensate and gas, the separated condensate to the pump Is sent to the condensate processor 54, and the gas is sent to the gas purifier 52.

In general, most third-party fermenters are not equipped with a separate water separator to generate a gas containing moisture. The gas containing moisture has a higher concentration of odor that humans can detect than dry gas. Even though it feels a stronger odor, and if the gas containing moisture passes through the tube through which the refrigerant flows, the heat exchange is made to obtain condensed water by condensation.

In the present invention, it is possible to reduce the load on the separator (41) at the rear end by installing the cooling device developed by the person in the conveying pipe, so that the processing cost is 80 compared to the single treatment by the separator (51). It can save up to%, and in terms of efficiency, it was possible to reduce the separation time to 90%.

In particular, fermentation-decomposing microorganisms are aerobic microorganisms, so in order to facilitate fermentation, the environment in the apparatus must be kept aerobic. In order to decompose 1g of organic matter, the amount of oxygen needs 0.8 to 0.9g and the amount of heat is 8 to 10 ㎉ / g. You will need

Since microorganisms oxidize carbon to obtain energy, oxygen is used to produce carbon dioxide. If oxygen is not supplied sufficiently, it becomes anaerobic and bad odor is generated by lower fatty acids and hydrogen sulfide, while oxygen is supplied excessively. When the heat of oxidation of the microorganism is cooled so that the temperature in the device does not rise, the decomposition rate at low temperature is relatively slower than the decomposition rate at high temperature, the decomposition rate is delayed and the efficiency is reduced.

After separation of the air, the residual gas is diluted and supplied to the fresh air at a ratio of 40: 1 or more. When the ambient temperature is high, such as summer, the aerobic activity may be slowed down, so the outside air is automatically supplied to the suction part of the circulation pipe. It is desirable to attach an injectable device so that external fresh air can be supplied into the device during suction operation with the blower.

The gas purifier 52 (Bio-Filter), while the gas discharged through the water separator 51 passes through the microbial carrier (rock wool + earthworm fecal soil) to which the odor decomposition microorganisms filled in the deodorizing device is fixed to the microorganisms It is decomposed and removed to finally discharge harmless and odorless gas.

The packed microbial carrier was prepared by mixing a very high hydrophilic rock wool (Hydrophilic rock wool) with a specific surface area and a high moisture content of about 340%, and a dung feces, which can supply nutrients in itself. Planting microorganisms were seeded on a carrier by mixing and culturing microorganisms having excellent ability to remove ammonia separated from compost in an aerobic composting facility and microorganisms having gastric organic acid decomposition ability.

Table 1 shows the exhaust gas analysis results by the gas purifier 52 and other equipment according to the present invention.

Table 1

       division        unit AUTO Fermenter   Manual Equipment Fermenter     Factory site boundary       Hexane  Μg / L  ND  4.04       Cyciohexan  ND       MIBK  20.6  72.7  ND       Ethylbenzene  ND  0.46  1.99   1,3dimethylbenzene  ND ND  0.38       MC  10.5 ND  ND       Benzene  ND ND  ND       TCE  ND  3.70  ND       Toluene  8.85  25.7  43.1       mp-xylene  ND  0.97  1.88       Styrene (0.4)  ND ND  1.61       o-Styrene  ND ND  0.38       MEK  196  717  13.1

                                                  ND: Not detected.

As can be seen from Table 1 above, it can be seen that all of the numerical values are suitable for environmental regulation. However, it can be seen that the purification ability of the gas purifier 52 according to the present invention is remarkably superior.

Treatment Apparatus for Condensed Water (54) works as follows:

It is composed of four reactors by A / O Process application method. The first reactor is anoxic tank, the second and third reactors are aerobic tank (aeration tank), and the fourth reactor is precipitation tank.

The water (condensed water) flowing from the water separator 51 is treated by K2 microorganisms in the first reactor, the second reactor, and the third reactor, and is precipitated in the fourth reactor and discharged as supernatant.

In the second and third reactors, which are aeration tanks, organic matter decomposition and nitrification are performed, and the sludge precipitated in the fourth reactor is returned to the second and third reactors, and the treated water is introduced into the first reactor by internal circulation. Organic decomposition and denitrification take place.

The fourth reactor can be operated with granular activated carbon and can easily cope with changing effluent water quality standards required by HRT control.

Table 2 is a result of analyzing the condensate treatment water 54 and other company's condensate treatment water quality according to the present invention.
TABLE 2

delete

 division  unit  Inflow of the present invention  The present invention BOD ₅  Mg / L  744  1.7 COD _MN  261  17.2  Suspended solids  48.0  0.8  T-N  13.4  3.89  T-P  8.02  3.74

As can be seen from Table 2, it can be seen that all of the values are suitable for environmental regulation, but the superior efficacy of the present invention can be confirmed.

In addition, the operation operation stage 6 for automatically controlling the operation of the processes, by adopting a PLC control method that is easy to weigh and count numerically to program the optimum operating conditions can be given the sophistication, reliability and convenience of operation In addition, it can be operated by switching manually according to the driving conditions and the driver's request.

In addition, in case of automatic operation, it can be operated by the signal input by PLC control method.Brown operation time, 1 ~ 2 minutes changing of the machine during operation for a predetermined time (10 minutes), stirrer operation, line And it is possible to operate the trace heat, condensate water treatment pump (Pump), blower (Blower), refrigerating chamber (Chiller) under the optimum operating conditions, and to selectively operate the main unit and auxiliary equipment during manual operation and operation.

In the sludge treatment apparatus using the microorganism and the mechanical device according to the present invention, the sewage sludge and the polymer obtained through the sedimentation tank are put into a stirring tank, and the polymer and the stirred sewage sludge are pressed by a filter press to form an organic sewage sludge cake. The organic sewage sludge cake is automatically put into the organic waste high-speed extinction treatment device and heated at a predetermined temperature while maintaining a constant pressure, and stirred at a low speed so that the aerobic fermentation microorganism rapidly undergoes an exothermic exothermic reaction to improve its decomposition ability. By rapidly cooling the high temperature gas generated from the organic waste high-speed extinction treatment device, the gas component is treated by a water separator and a biofilter, and a small amount of organic matter such as nitrogen and phosphorus contained in the condensed water is treated with condensed water. The turbidity of the condensate is measured (checked) and microorganisms are removed at the appropriate time. Purification is performed with additional input, and by eliminating the pretreatment dehydration process, which is essential for composting and sampling methods, it is possible to prevent secondary contamination due to high concentration of desorption solution, and solid-liquid separated and dewatered sludge by filter press. By finely crushing and carrying out a fast aerobic fermentation process with an extinction reactor, the reaction product of water, gas such as carbon dioxide and mercaptan is generated, and the gas is treated by a biofilter to dilute with outside air to form aerobic activation air. Moisture contained in the gas can be recovered as condensate to significantly reduce the weight after treatment of sewage sludge.

In addition, the present invention, after operating a predetermined cycle, by vibrating the internal microorganisms and fillers and the micronized organics and inorganics of the extinction reactor, reusing microorganisms and fillers, replenish the shortages and compost the microorganisms and minerals Alternatively, it can be used as cover material, and condensate can be reused or discharged by treating the discharged water by the aerobic extinguisher.

delete

Claims (7)

Slurry processing unit (2-1) for injecting sewage slurries obtained through sedimentation and digestion, chemical input unit (2-2) for supplying chemicals, and sewage slurries and chemicals supplied from them are coated with a chemical A slurry and a chemical treatment stage (2) comprising a stirring section (2-3) to be stirred at 26); Chemical and stirred sewage sludge are pressed by the filter press 30 to form an organic sewage sludge cake 30-1, and the organic sewage sludge cake 30-1 is crushed by a crusher 38 to form a fixed size. Dismantling means 3;  A stirring blade 41-4 for repair is installed inside the stirring tube 41 by the rotary shaft 41-3, and a trace heater 46 is installed on the outer surface of the stirring tube 41 to warm the line heater 47. ) And an organic sewage sludge cake 30-1 formed in the dewatering means 3 in the conventional organic waste high-speed decay processing apparatus 40 capable of supplying air heated by the blower 44 to the stirring tube 41. A) and automatically put the organic sewage sludge cake (30-1) into the agitation fermentation microorganisms while keeping the inside of the stirring barrel 41 at a pressure of 0.1 to 0.2 bar and warming to a temperature of 40 ° C. or lower. An extinction end (4) to rapidly proceed the exothermic exothermic reaction of the decomposition ability; The high-temperature gas generated by the organic waste high-speed extinction treatment device 40 of the extinction stage 4 is rapidly cooled while passing through the water separator 51 to separate condensate and gas gas containing a small amount of organic matter such as nitrogen and phosphorus. The product treatment stage (5) for separating and treating, and purifying the BOD 5ppm or less while adding microorganisms by measuring the turbidity of the condensate; Sludge treatment apparatus using a microorganism and a mechanical device, characterized in that formed. The method of claim 1, wherein the slurry and the chemical treatment stage (2) for stirring the sewage slurry and the chemicals; Slurry treatment unit (2-1) formed of a sedimentation tank (10) for storing the sludge generated in the sewage treatment plant to obtain only the slurry precipitated, and a slurry storage tank (12) for storing the slurry supplied from the digestion tank (11) and ; The chemical solution dissolution tank 20 and the chemical storage tank 21, which rotate the stirring blades 23 and 25 vertically installed therein by the geared motors 22 and 24, are installed side by side to form the valve V1 and the pump. (P1) is connected to the supply pipe (20-1), the chemical storage tank 21 is a slurry of the stirring section (2-3) by the chemical supply pipe (21-1) provided with the valve (V2) and the pump (P2) -A chemical input part (2-2) connected to the chemical stirring tank (26) to store the chemical dissolved in the chemical melting tank (20) in the chemical storage tank (21) and supply the slurry-chemical stirring tank (26) by a predetermined amount. )Wow; Inside the slurry-chemical stirring tank 26, the stirring blades 28 rotated by the geared motor 27 are installed to supply the slurry supplied through the slurry supply pipe 12-1 and the chemical supply pipe 21-1, respectively. The medicine is stirred, and the slurry is removed by connecting a chemical mixture slurry supply pipe 26-1 provided with a valve V4 and a pump P1 to the chemical mixture slurry supply pipe 26-1 of the slurry-chemical stirring tank 26. Sludge treatment apparatus using a microorganism and a mechanical device, characterized in that formed; agitator (2-3) to be supplied to the means (3). The decontamination means (3) of Claim 1 which shape | molds the chemical mixing slurry supplied from the stirring part (2-3) of the slurry and the chemical | medical treatment process 2 into the sewage sludge cake 30-1; A separate air compressor 33 and a pneumatic cylinder 35 operated by the pneumatic pump unit 34 to filter the filter mixture 30 to be dewatered and pressed to form the sewage sludge cake 30-1. Operating by; On the supply side of the filter press 30, a slurry inlet pipe 31 equipped with a valve is installed to be connected to the chemical mixing slurry supply pipe 26-1 of the slurry-chemical stirring tank 26 to supply the chemical mixing slurry. With; A screw conveyor 37 which is installed at the outlet of the filter press 30 and transfers the sewage sludge cake 30-1 falling; A crusher 38 installed at the discharge end of the screw conveyor 37 to crush the sewage sludge cake 30-1 discharged to a predetermined size; The belt conveyor 39, which is installed at the discharge end of the crusher 38 and is crushed to a predetermined size, supplies the sewage sludge cake 30-1 to the stirring tube 41 of the extinction end 4. Sludge treatment apparatus using microorganisms and machinery. The product processing stage (5) according to claim 1, further comprising: a product processing stage (5) for rapidly cooling the hot gas generated in the organic waste high-speed extinguishing treatment apparatus (40) of the extinction stage (4) to separate the gas into condensed water and to treat it; A water separator (51: Gas-Liquide) for rapidly cooling a gas body containing water vapor supplied from the organic waste high-speed extinction processing device 40 to separate condensate containing a small amount of organic matter such as nitrogen and phosphorus from a separate gas gas. Separator); A gas purifier (52: Bio-Filter) for decomposing and removing the malodorous component of the separated gas by a microorganism, converting it into a colorless and odorless state; The separated condensate is passed through the first anoxic tank, the second and third tanks where organic decomposition, denitrification, and nitrification is performed by microbial treatment, and then purified.The purified water is supplied to a fourth reactor (precipitation tank). A condensate treatment device (54: Treatment Apparatus for Condensed Water) which is discharged after being precipitated and converted into supernatant water; A blower 56 for discharging the supernatant water converted by the condensate processor 54; Sludge treatment apparatus using a microorganism and a mechanical device, characterized in that formed by. delete The method according to claim 1, Slurry and chemical treatment step (2) for stirring the sewage slurry and the medicine obtained through precipitation and digestion; A sedimentation tank (10) and a digestion tank (11) and a slurry storage tank (12) for storing the slurry supplied from above are installed and connected, and the slurry storage tank (12) is geared to the sludge generated in the sewage treatment plant. A stirring device for operating the stirring blades 14 by the motor 13 is installed, and a valve V3 and a pump P3 are installed in the slurry supply pipe 12-1 of the slurry storage tank 12 to supply the slurry. Controlled slurry treatment section 2-1; The chemical dissolution tank 20 and the chemical storage tank 21 are installed side by side to communicate with each other by a pipe, and each chemical dissolution tank 20 and the chemical storage tank 21 are agitated by the geared motors 22 and 24 with stirring blades 23 ( Agitator 25 is installed (rotating), respectively, and the slurry-chemical stirring in the supply pipe 20-1 and the chemical storage tank 21 for supplying the chemicals dissolved in the chemical melting tank 20 to the chemical storage tank 21. A chemical supply part 2-2 provided with valves V1, V2 and pumps P1, P2 for supplying chemicals to the tank 26; Inside the slurry-chemical stirring tank 26, the stirring blades 28 rotated by the geared motor 27 are installed to supply the slurry supplied through the slurry supply pipe 12-1 and the chemical supply pipe 21-1, respectively. Stirring part (2-3) which allows the medicine to be stirred to form a floc and installs the valve (V4) and the pump (P1) in the chemical mixing slurry supply pipe (26-1) of the slurry-chemical stirring tank (26). Sludge treatment apparatus using a microorganism and a mechanical device, characterized in that formed as. The sludge treatment apparatus using a microorganism and a mechanical device according to claim 1, wherein the size of the sewage sludge cake (30-1) crushed by the crusher (38) of the degreasing means (3) is 3 mm.

Images