KR102086720B1 - Device to ferment sewage sludge - Google Patents

Abstract

The present invention relates to fermentation of sludge from which moisture is removed when treating contaminated water and, specifically, comprises: a sludge extraction unit (100) for separating sludge from contaminated water; a moisture control unit (200) for controlling the moisture of the sludge discharged from the sludge extraction unit; and a fermentation unit (300) for fermenting the sludge discharged from the moisture control unit. The present invention facilitates fermentation of sludge, and contents generated and discharged in the fermentation process can be reused as compost.

Description

Sludge Fermenter {Device to ferment sewage sludge}

The present invention relates to sludge fermentation in which water is removed during contaminated water treatment.

Patent invention 001 relates to a device for fermenting livestock manure and sewage sludge using soil microorganisms, and a fermentation compost manufacturing method using the same. A hot air injector configured to inject hot air into the fermentation apparatus for drying the fermentation compost raw material, a stirring device for stirring and mixing the fermentation compost raw material and soil microorganism together with the hot air injected from the hot air spraying device, In the fermentation device consisting of a discharge device provided for discharging the fermented compost raw material dried at the bottom, and an exhaust pipe provided to escape the steam and dust generated in the fermentation device to the outside, the stirring device is a rotary shaft The stirring blade has a screw shape that forms a certain cycle at regular intervals, An apparatus for fermenting livestock manure and sewage sludge with a constant rotational speed using soil microorganisms and a method for producing fermentation compost using the apparatus are provided.

The present invention relates to a fermentation treatment method of sewage sludge, and more particularly, to a method of fermentation of sewage sludge by aerobic microorganisms by reducing moisture in sewage sludge to prevent aggregation of sludge and increasing air permeability. Fermentation treatment method of sewage sludge of Patent Invention 002 is a mixing step of adding 10 to 12 parts by weight of pearlite, 5 to 6 parts by weight of ocher ceramic balls to a mixing tank and then adding and mixing the fermentation strain with respect to 100 parts by weight of sludge, and the mixing A fermentation step of putting the mixture obtained in the step into a fermenter and then fermenting the sludge for 60 to 100 hours while stirring under aerobic conditions; A first conveyance step of returning the fermentation mixture discharged from the fermentation tank to the mixing tank after completion of the fermentation step, and a discharge adjustment step of adjusting the discharge by injecting the remaining fermentation mixture except the fermentation mixture returned to the mixing tank into a discharge adjustment tank; A sorting step of separating the ocher ceramic balls contained in the fermentation mixture by introducing a fermentation mixture discharged from the discharge adjustment tank into a sorting unit, and a second conveying step of returning the ocher ceramic balls separated in the sorting step to the mixing tank; And a carrying out step of carrying out the fermented sludge from which the ocher ceramic balls are removed in the sorting step.

Patent invention 003 relates to a sewage sludge composting facility using an electric dehydrator, a primary dehydrator for receiving the sewage sludge to dewater the sewage sludge so that the water content of the sewage sludge becomes a first set moisture content; A conveyor belt for transporting the sewage sludge dewatered from the primary dehydrator; A secondary dehydrator connected to the conveyor belt and configured to electrically dewater the sewage sludge so that the water content of the sewage sludge introduced through the conveyor becomes a second set moisture content; And a crushing means connected to the secondary dehydrator and pulverizing the sewage sludge when the sewage sludge discharged from the secondary dehydrator flows into the drying bag for fermenting the sewage sludge.

Patent invention 004 refers to a sludge fermentation drying apparatus for reducing the volume of sludge cakes by fermentation and drying of sludge cakes such as sewage / wastewater and debris, firstly dehydrated through a centrifugal dehydrator, through hot water and warm air.

KR 10-1029764 B1 (Registered date April 11, 2011) KR 10-1279135 B1 (Registration date June 20, 2013) KR 10-1750062 B1 (Registration date June 16, 2017) KR 10-1599989 B1 (Registered February 26, 2016)

The present invention relates to sludge fermentation in which water is removed during contaminated water treatment.

The present invention is an invention for a sludge fermentation apparatus, specifically, sludge extraction unit 100 for separating the sludge from the contaminated water; Moisture control unit 200 for adjusting the water of the sludge discharged from the sludge extraction unit; It consists of a configuration comprising; fermentation unit 300 for fermenting the sludge discharged from the moisture control unit.

The present invention is an invention for a sludge fermentation apparatus, in the above-described invention, a container-shaped sludge extraction container 110; formed on one side of the sludge extraction container, the contaminated water supply port 120 for supplying contaminated water; It is formed on one side of the sludge extraction container, the flocculant inlet 130 for supplying a flocculant; The sludge extraction container is formed on the other side, the sludge discharge port 140 to discharge the sludge; includes.

The present invention is an invention for a sludge fermentation apparatus, in the above-described invention, the water control unit is a first moisture control unit 210 for adjusting the water to be accommodated by pressing or centrifugation ;, The first water control unit separated from It includes; a second moisture control unit 260 for controlling the combined water of the sludge.

The present invention is an invention for a sludge fermentation apparatus, in the above-described invention, the fermentation chamber 310 is injected into the dried sludge to form a closed space; is formed on one side of the fermentation chamber, the sludge is Sludge inlet 311 to be injected ;, The biochip inlet 312 is formed on the fermentation chamber side, the biochip inlet 312, The discharge port is formed on the fermentation chamber side, the discharge port 313 is discharged; .

The present invention has the effect of enabling the separation of process water and sludge in the treatment of contaminated water. The present invention has the effect of facilitating fermentation by controlling the moisture of the sludge discharged from the sludge extraction unit. The present invention facilitates the fermentation of sludge, and has the effect of reusing the contents generated and discharged in the fermentation process as compost.

1 is an overall conceptual view of the sludge fermentation apparatus of the present invention.
Figure 2 is a conceptual view of the sludge extraction unit of the present invention sludge fermentation apparatus.
Figure 3 is a conceptual view of the centrifugal moisture control unit of the present invention sludge fermentation apparatus.
Figure 4 is a schematic view of the operation of the compression type moisture control unit of the present invention sludge fermentation apparatus.
Figure 5 is a conceptual view of the fermentation operation of the sludge fermentation apparatus of the present invention.

Hereinafter, the most preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. In the following example, the citation relationship is merely a number provided to assist in technical understanding, and other examples which are not cited may be cited. Even if the configuration is not specified in the following examples can be substituted for the object having a similar purpose and effect. Sub-concept constructs not specified in the following examples are considered to be specified.

[Example 1-1] The present invention relates to a sludge fermentation apparatus, specifically, a sludge extracting part 100 for separating sludge from contaminated water; and water control for adjusting the water of sludge discharged from the sludge extracting part. Part 200 ;, Fermentation unit 300 for fermenting the sludge discharged from the moisture control unit; consists of a configuration comprising a.

For contaminated water treatment, process water and sludge separation processes are required, and the separated sludge is converted to fermented compost and recycled. Specifically, since the sludge contains a large amount of water, the moisture control unit should be adjusted to the appropriate amount of water and binding water. The sludge from which moisture is removed is fermented in the fermentation section.

[Example 2-1] The present invention relates to a sludge fermentation apparatus, and in Example 1-1, the sludge extraction portion is a container-shaped sludge extraction container 110; and is formed on one side of the sludge extraction container and contaminated water. Contaminated water supply port 120 for supplying; is formed on one side of the sludge extraction container, flocculant inlet 130 for supplying a flocculant ;, Sludge discharge port 140 formed on the other side of the sludge extraction vessel, discharge sludge It includes;

The present invention relates to a sludge extraction container 110, when contaminated water and flocculant are introduced into the sludge extraction container 110, the contaminated water chemically reacts with the flocculant to form sludge. The sludge extraction container 110 ) Is collected in the lower portion, and is discharged through the sludge outlet 140. Specifically, one side of the sludge extraction container 110 communicates the contaminated water supply port 120 and the coagulant inlet 130, and the contaminated water and the coagulant introduced into the contaminated water supply port 120 and the coagulant inlet 130 are sludge. Create The sludge of the sludge extraction container 110 is discharged through the sludge discharge port 140.

Example 2-2 The present invention relates to a sludge fermentation apparatus, and in Example 2-1, a blade 111 accommodated in the sludge extraction container and guides agglomerated sludge to a sludge discharge port is included. .

The agglomerated sludge takes the shape of a rice cake. The high viscosity of the sludge makes magnetic discharge impossible. In order to discharge the sludge, the blade 111 is formed inside the sludge extraction container. The blade 111 is discharged to the sludge outlet by moving the aggregated sludge. The blade uses motor power and has a flat plate shape.

Example 2-3 The present invention relates to a sludge fermentation apparatus and, in Example 2-1, includes a first flow rate control valve 121 formed at the polluted water supply port.

Example 2-4 The present invention relates to a sludge fermentation apparatus, and in Example 2-1, a coagulant container 131 communicating with the coagulant inlet; a fixed-quantity feeding device formed between the coagulant container and the coagulant inlet. 132; includes;

For optimal sludge production, the amount of contaminated water and flocculant must be metered in. That is, the introduced contaminated water and flocculant should be maintained at a constant ratio. The first flow control valve controls the contaminated water supply. The contaminated water regulates the opening and closing amount by the opening and closing time and the flow rate control of the first flow control valve. The flocculant in solid form is controlled by the metering device. The control device controls the input amount of the first flow rate control valve and the fixed quantity supply device. The first flow rate control valve 121 and the fixed-quantity supply device 132 are driven by the automatic concentration control to adjust the input amount by detecting the concentration of the mixed contaminated water and flocculant.

Example 2-5 The present invention relates to a sludge fermentation apparatus, and in Example 2-1, a process water discharge pipe 150 is formed at one side of the sludge extraction container and discharges process water; Located, and the process purification filter 151 for purifying the process water.

The process water separated from the contaminated water is discharged through the process water discharge pipe 150. The process water contains residual contaminants that are not aggregated with flocculants. In order to remove residual contaminants, a process water purification filter 151 is formed at one side of the process water discharge pipe 150, and the process water flows, and the residual pollutants are filtered by the purified water filter.

Example 2-6 The present invention relates to a silage fermentation apparatus, and in Example 2-1, the sludge extraction container 110 has a cohesive space 10 formed in a cone shape at a lower portion thereof; And a baffle 112 coupled to the sludge extraction container, wherein the contaminated water supply port is formed in an inclined direction.

The condensation space 10 of the cone shape is formed below the sludge extraction container 110. This is to collect the sludge at the bottom. Sludge has a higher specific gravity than water, so it is seated in the lower part, and sludge is collected in the center of the cone shape. The inside of the cone shape is formed in plural, plate-shaped baffles are formed. The baffle is intended to prevent turbulence of contaminated water, and contaminated water turbulence is aimed at collecting stable sludge.

The contaminated water supply port forms an inclined direction. Contaminated water is introduced at a constant speed, and when it is inclined, contaminated water in the sludge extraction container forms a vortex. The sludge of the weight is concentrated in the center of the vortex.

 Example 2-7 The present invention relates to a sludge fermentation apparatus, and in Example 2-6, wherein the baffle is formed of a plurality of plate members and is formed in a donut shape.

Example 2-8 The present invention relates to a sludge fermentation apparatus, and in Example 2-6, the baffle is formed in a spiral form.

The baffle is formed in a plurality of donut-shaped plate and / or spiral form. Because, when the contaminated water is introduced to fall through the baffle to generate a water flow to facilitate the lower entry.

Example 2-9 The present invention relates to a sludge fermentation apparatus, and in Example 2-6, a sludge discharge pipe 140 formed at the sludge discharge port; and a process water discharge pipe 150 branched from the sludge discharge pipe. It includes; three-way valve 160 formed in the process water discharge pipe and the sludge discharge pipe.

The bottom of the cone-shaped cohesion space connects the sludge outlet, and the sludge outlet discharges the sludge and the process water. The lower part of the sludge extraction container fills sludge with high specific gravity, and the upper part of the sludge fills process water. A three-way valve 160 is mounted in the middle of the sludge discharge pipe 140, and the sludge and the process water are selectively separated according to the operation of the three-way valve 160.

Example 2-10 The present invention relates to a sludge fermentation apparatus, and in Example 2-9, the process water purification pipe is formed in the process water discharge pipe and includes a process water purification filter 151 for purifying process water.

The process water separated from the contaminated water is discharged through the process water discharge pipe 150. The process water has residual contaminants that are not aggregated with the flocculant. To remove the residual pollutants, one side of the process water discharge pipe 150 A process water purification filter 151 is formed, and process water flows, and residual pollutants are filtered by the purified water filter.

Example 2-11 The present invention relates to a sludge fermentation apparatus, and in Example 2-9, formed in the sludge discharge pipe, a turbidity measurement gauge 170 for measuring the turbidity of the sludge; It includes; three-way valve controller 171 for adjusting the three-way valve according to the result.

The three-way valve selectively opens the sludge discharge line or the process water discharge line. For automatic control, a turbidity gauge is fitted to the sludge discharge line. Turbidity measuring gauge measures the turbidity of the sludge discharge pipe, controls the 3-way valve according to the measurement result, and separates the sludge and process water. The three-way valve opening and closing is made through the three-way valve controller 171.

 [Example 3-1] The present invention relates to a sludge fermentation apparatus, and in Example 1-1, the moisture control part includes a first moisture control part 210 for adjusting the water to be compressed or centrifuged; It includes; a second moisture control unit 260 for controlling the combined water of the sludge separated from the moisture control unit.

The present invention relates to a water control unit, wherein the water control unit is formed of the first water control unit 210 and the second water control unit 260, thereby controlling the water in multiple stages. The first moisture control unit 210 physically removes water, which aims to remove the water contained in the sludge. The second moisture control unit 260 controls the amount of water in a drying manner, which has the purpose of adjusting the amount of bonding water.

 Example 3-2 The present invention relates to a sludge fermentation apparatus, and in Example 3-1, the first moisture control part forms a sludge accommodating space and a plurality of dehydration vessels forming a plurality of through holes 211a. 211; and a dehydration rotor 212 for rotating the dehydration container.

The sludge discharged to the sludge discharge port 140 is accommodated in the dehydration vessel 211. The dehydration vessel 211 rotates at high speed and separates water by centrifugal force. The separated water is discharged through the through hole 211a. The dehydration vessel is rotated by the dehydration rotor 212, and the dehydration rotor preferably utilizes the power of the electric motor.

[Example 3-3] The present invention relates to a sludge fermentation apparatus, and in Example 3-1, the first moisture control unit seats sludge, and a sludge conveyor 221 for continuously transporting sludge; and the sludge conveyer. Then, the corresponding rotation, the pressing conveyor 222 for pressing the sludge, the heater 223 to increase the temperature at a position corresponding to the sludge conveyor and the pressing conveyor; includes.

If the sludge is discharged continuously, the water removal must be carried out continuously. To implement this, a sludge conveyor and a pressing conveyor are used. The sludge is seated in the sludge conveyor and transported, and the sludge being transported is physically compressed by the press conveyor. By the compression, the water contained in the sludge is discharged outside. The sludge conveyor and the pressing conveyor rotate at the same feed rate and are formed at positions facing each other. In order to improve the compaction effect, the compaction conveyor takes an inclined form. This is to increase the amount of compression according to the transport distance.

To improve the sludge compacting effect, the sludge temperature is improved during the compacting process. This is to cause a decrease in the surface tension of moisture. The temperature increase is composed of a heater 223. The heater temperature is maintained at 40 ° C. The heater is fixed around the conveyor or attached to the surface of the sludge conveyor (or press conveyor).

 Example 3-4 The present invention relates to a silage fermentation apparatus, and in Example 3-1, the second moisture control part includes a drying chamber 261 forming an inlet on one side and an outlet on the other side; It includes.

For the second moisture control of the sludge, the sludge is dried inside the drying chamber 261. The sludge is conveyed through the conveyor. The drying chamber 261 forms an enclosed space. An inlet and an outlet are formed at both ends of the enclosed space, and the inlet and outlet are opened only when sludge is input and discharged.

Alternatively, when the sludge is continuously supplied, a flexible door is formed, and the flexible door is formed of an electromagnetic shielding material. Doors are mounted to the inlet and outlet of the drying chamber 261. Various operation means may be applied to the operation of the door. In addition, the inlet and outlet to form an electromagnetic shielding space, to block the external radiation.

Example 3-5 The present invention relates to a sludge fermentation apparatus and, in Example 3-4, an electromagnetic wave oscillator 262 mounted to the drying chamber and oscillating a microwave.

In order to supply electromagnetic waves inside the drying chamber, the drying chamber forms an electromagnetic oscillator 262. The electromagnetic oscillator 262 generates electromagnetic waves to dry the water of the sludge. Inside the drying chamber forms an electromagnetic wave sealing means. This is to prevent unintentional emission of electromagnetic waves.

 Example 4-1 The present invention relates to a sludge fermentation apparatus, and in Example 1-1, a fermentation chamber 310 into which the dried sludge is introduced and forming a sealed space; Sludge inlet 311 formed on one side of the fermentation chamber, the sludge is injected ;, Biochip inlet 312 is formed on one side of the fermentation chamber, the biochip is introduced into the fermentation chamber; Formed on the other side of the fermentation chamber, the fermented sludge is discharged It includes; outlet 313.

Sludge is converted to compost by fermentation. In order to implement this, the sludge is introduced into the fermentation chamber 310, to form a fermentation condition, the sealed fermentation chamber maintains a constant temperature and humidity. The dry sludge inside the fermentation chamber 310 is mixed with the organic biochip and fermented. A sludge inlet sludge inlet 311 and a biochip inlet biochip inlet 312 are formed at one side of the fermentation chamber 310. For savings, moisture control agents can be added. After the fermentation is completed, the fermentation sludge is discharged through the outlet 313 of the fermentation chamber.

[Example 4-2] The present invention relates to a sludge fermentation apparatus, and according to Example 4-1, an air outlet port 321 communicating with the fermentation chamber and discharging air; Air filter 322 for purifying ;, includes.

In the fermentation process, fermentation gas (ammonia, methane gas, etc.) is generated, and in order to improve fermentation effect and secure fermentation chamber safety, the fermentation gas must be discharged to the outside of the fermentation chamber. To this end, the fermentation chamber forms an air outlet 321. The air outlet 321 is selectively opened and closed by mounting a valve. In order to prevent the odor emission of the fermentation gas, the air outlet 321 is equipped with an air filter 322, preferably equipped with a scrubber.

[Example 4-3] The present invention relates to a sludge fermentation apparatus, and in Example 4-1, the heat supply device 330 is formed in contact with the fermentation chamber and the temperature control of the fermentation chamber; And a temperature and humidity measuring device 331 for measuring temperature and humidity; and a temperature controller 332 for receiving a signal from the temperature and humidity device and controlling the heat supply device.

To achieve optimum fermentation conditions, the fermentation chamber maintains a constant temperature and humidity in real time. For this purpose, a heat supply device, a temperature and humidity measuring device, and a temperature controller are mounted. The heat supply device allows the heated water to flow in the water jacket outside the fermentation chamber, or adjusts the temperature of the fermentation chamber through a hot wire. The temperature controller 332 adjusts the temperature of the heat supply device 330. The temperature controller controls the operation of the heat supply device by detecting information of the temperature and humidity measuring device.

[Example 4-4] The present invention relates to a sludge fermentation apparatus, and according to Example 4-1, a biochip container 340 formed at the biochip inlet and accommodating a biochip; between the biochip container and the fermentation chamber. It is formed in, and the biochip supply device 341 for controlling the biochip input amount; includes.

The fermentation chamber inside accommodates sludge and biochips. The biochip is accommodated in the biochip container, and is introduced into the fermentation chamber through the biochip inlet. In order to improve the fermentation effect, sludge and biochips are supplied at a predetermined ratio, and a biochip supply device 341 is formed between the biochip inlet and the fermentation chamber.

[Example 4-5] The present invention relates to a sludge fermentation apparatus, and according to Example 4-1, a mixing blade 350 formed inside the fermentation chamber and mixing sludge and biochips; and rotating the mixing blade. It comprises a; mixing drive device 360 to.

In order to smoothly mix the sludge and the biochip, the inside of the fermentation chamber forms a plurality of mixing blades 350. The mixing blades 350 are mounted on a plurality of main shafts. The mixing blade forms a plate-shaped pressing plate and compresses the mixture (sludge and biochip) during the rotation process. The main shaft is connected to the mixing drive 360, the mixing blade is rotated by the power transmission of the mixing drive. The mixing drive 360 receives the rotational force of the electric motor through the power transmission means. The rotating means may be replaced with an object having the same purpose and effect as an electric motor.

10: coagulation space 100: sludge extraction unit
110: sludge extraction container 111: blade
112: baffle 120: contaminated water supply port
121: first flow control valve 130: flocculant inlet
131: coagulant container 132: fixed-quantity supply device
140: sludge outlet 150: process water discharge pipe
151 process purification filter 160 three-way valve
170: Turbidity measurement gauge 171: 3-way valve controller
200: moisture control unit 210: first moisture control unit
211: dehydration container 212: dehydration rotor
221: sludge conveyor 222: crimping conveyor
223: heater 260: second moisture control unit
261 drying chamber 262 electromagnetic wave oscillator
300: fermentation 310: fermentation chamber
311: sludge inlet 312: biochip inlet
313: outlet 321: air outlet
322: air filter 330: heat supply device
331: temperature and humidity measuring device 332: temperature controller
340: Biochip container 341: Biochip supply device
350: mixing blade 360: mixing drive device

Claims (4)

In the sludge fermentation apparatus,
Sludge extraction unit 100 for separating the sludge from the contaminated water;
A water control unit 200 for adjusting the water of the sludge discharged from the sludge extraction unit;
Fermentation unit 300 for fermenting the sludge discharged from the moisture control unit;
The moisture control unit is a first moisture control unit 210 for adjusting the water received by pressing or centrifugation;
A second moisture control unit 260 for controlling the combined water of the sludge separated from the first moisture control unit;
The sludge conveyor 221 seats the sludge and continuously transports the sludge;
A pressing conveyor 222 corresponding to the sludge conveyor and compressing the sludge;
The second moisture control unit forms an inlet on one side, the outlet on the other side, drying chamber 261 consisting of a closed space;
Electromagnetic shielding space formed in the inlet and outlet ;,
An electromagnetic wave oscillator 262 mounted to the drying chamber and oscillating microwaves;
A sludge extraction container (110) formed in the sludge extraction unit;
An agglomeration space 10 formed in the shape of a cone at the bottom of the sludge extraction container 110;
And a baffle (112) coupled to the sludge extraction vessel (110) in the agglomeration space and formed in a plurality of donut-shaped plates and / or spiral shapes.
The method according to claim 1,
Is formed on one side of the sludge extraction container, polluted water supply port 120 for supplying contaminated water;
Is formed on one side of the sludge extraction container, flocculant inlet 130 for supplying a flocculant;
Sludge fermentation apparatus comprising a; sludge extraction container is formed on the other side, the sludge discharge port 140 for discharging the sludge.
delete The method according to claim 1,
The fermentation unit is a dried sludge is injected into the inside, the fermentation chamber 310 to form a sealed space; formed on one side of the fermentation chamber, a sludge inlet 311 is introduced into the sludge; formed on one side of the fermentation chamber And a biochip inlet 312 into which the biochip is introduced; and a discharge port 313 formed at the other side of the fermentation chamber and discharging the fermented sludge.

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