KR100976378B1 - Drying of sludge and drying method thereof - Google Patents

Abstract

PURPOSE: A drying apparatus of sludge and drying method thereof are provided to control the percentage of water content of remnants to be a certain level while reducing dusts and odorous gas. CONSTITUTION: A drying apparatus of sludge is comprised of a mixing impeller(175) and a compression impeller(176). The crushing impeller has a pitch which more grows and is installed at one direction of a housing. The mixing impeller is comprised of three type of impeller: a uniform impeller(172); a crushing impeller; and dispersion impeller(174).

Description

Drying apparatus and drying method for producing unrefined soil of sewage and livestock waste

The present invention relates to a drying apparatus and a drying method for the production of decomposed soil of sewage and livestock waste, and more particularly, to a drying apparatus that can reduce the odor gas, the water content of the residue can be constantly adjusted.

Until now, sewage and livestock wastes have been treated with ocean dumping, which has increased sea pollution, which has been a major social problem.

However, in terms of recycling resources, there have been attempts to protect the natural environment by preventing the soil pollution and securing natural greenery by making the soil into mature soil, and the drying apparatus of sewage and livestock waste has been developed by such an attempt.

The conventional apparatus for drying sewage and livestock waste is provided with a housing 10 having a screw 11 with an impeller 12 installed therein as shown in FIG. 1, and sewage and livestock waste injected into the upper portion of the housing 10. The dregs inlet 20 is formed, and the dregs outlet 30 is formed at the bottom of the other side of the housing 10 to discharge the dregs, and at the other side of the housing 10, moisture generated during the drying process of the dregs is discharged. A tally filtrate outlet 40 is formed. At this time, the dregs inlet 20 receives the dregs from the sludge tank 21 and is put therein.

In addition, a gas outlet 50 through which the gas generated in the drying process is discharged, and a deodorizer 51 for purifying and discharging the gas discharged from the gas outlet 50 are installed at an upper portion of the housing 10.

In addition, the upper part of the housing 10 is configured with a thermometer 61 and a pressure gauge 62 connected to the automatic controller 60 by checking the temperature and pressure inside the housing 10.

In addition, the steam boiler 70 is connected to the housing 10, and heat or steam is introduced into the housing 10 to be directly heated and dried.

Alternatively, a decommissioned soil factory in which an electric permeation method for separating and dehydrating intracellular water by applying an electric shock to the organic cells of the debris in the housing 10 is under construction or in operation.

However, the method of using the heat or steam generated in the boiler is gradually losing its reality due to excessive fuel cost, and the electric penetration method is required to be expensive enough that most of the operating cost is spent on power.

And the bigger problem is that the original moisture content of sewage and livestock waste is different from each other, so there is a problem that the water content is not constant after drying depending on the time of residue remaining inside the housing. Management difficulties are occurring.

In addition, a large amount of odor gas and dust is generated during drying, there is a difficulty in treating this.

The present invention has been made to solve the above problems, by installing a special type of impeller to maintain a constant moisture content of the residue, while adjusting the rotational speed and put the residue and a certain proportion of peat moss as the residue The present invention provides a drying apparatus and method for producing unrefined soil of sewage and livestock waste to reduce the generation of dust or odor gas generated by drying microorganisms.

In order to solve the above problems, the drying method according to the present invention,

Pit moss is put together with sewage and livestock waste in the housing where the screw is embedded, and the remaining residue is taken out into the maturation soil while separating the filtrate through the grinding, mixing and compressing process from one side of the housing to the other side by the screw. While supplying and drying together, microorganisms are introduced into the housing, and in order to maintain a constant moisture content of the peat moss, there is provided a method for drying sewage and livestock waste, characterized by controlling the speed of the screw.

In addition, the drying apparatus according to the present invention,

A housing having a screw rotated by the drive motor;

Residue inlets and outlets formed on one side and the other side of the housing for inputting and discharging sewage and livestock waste;

A tallow filtrate outlet formed on the other side of the housing and discharging the filtrate separated from the residue;

A pit moss inlet formed adjacent to the dregs inlet to inject the pit moss into the housing together with the dregs;

A microorganism inlet for introducing microorganisms into the housing;

An exhaust gas outlet for discharging odor gas in the housing;

Heating unit for supplying hot air into the housing; And

An automatic control device for controlling the temperature and pressure in the housing and the rotational speed of the drive motor; provides a decommissioned soil drying apparatus of sewage and livestock waste.

Here, the screw is formed in the spiral crushing impeller of increasing pitch in one direction of the housing, the mixing impeller is erected at right angles is formed in the center portion, the compression impeller is gradually formed in the other direction.

At this time, the mixed impeller is composed of three impellers, one side is a uniform impeller composed of wings having the same torsion angle while a plurality of radially extending, and a plurality of blades in one direction at the ends of the wings extending radially in the center It is composed of a crushing impeller protruding crushing blade of the shape, and a dispersion impeller formed a plurality of radially extending on the other side and a dispersion plate wider than this wing plate at the end of the wing having the same twist angle.

In addition, the heating unit preferably comprises a blower, an electric heater connected to the blower, a discharge pipe header connected to the electric heater, and a discharge pipe branched from the discharge pipe header and connected to various sections of the housing.

The drying apparatus of the present invention as described above has the effect of reducing the dust or odor gas generated in the drying process by the introduction of microorganisms.

In addition, the pit moss is pulverized, mixed, and compressed by three types of impellers, so that the moisture content of the residue can be constantly adjusted.

1 is a drying apparatus for the production of decomposed soil of sewage and livestock waste according to the prior art,
Figure 2 is a drying apparatus for the production of decomposed soil of sewage and livestock waste according to the present invention,
3 is a plan view showing a screw assembly state of FIG.
Figure 4 is a perspective view showing in detail the uniform impeller in the mixing impeller of Figure 3,
5 is a perspective view showing in detail the crushing impeller of the mixed impeller of FIG.
6 is a perspective view showing in detail the dispersion impeller in the mixing impeller of FIG.

Hereinafter, with reference to the accompanying drawings will be described a drying apparatus for the production of sewage and livestock waste according to a preferred embodiment of the present invention.

2 and 3, the drying apparatus 100 according to the present invention includes a housing 110 in which a screw is embedded, and the sewage and livestock waste is introduced into the housing 110 to grind, mix, and compress the filtrate. Are separated and the remaining residue is taken out for use as loam soil.

A residue inlet 111 is formed at an upper portion of one side of the housing 110, and an outlet 112 through which dry residue is discharged is formed at a lower portion of the housing 110.

And one side of the housing 110 is provided with a drive motor 120 to rotate the screw, the drive motor 120 is equipped with a drive pulley 121, the interlocking pulley 122 is mounted on one end of the screw The interlocking pulley 122 and the driving pulley 121 are fastened by the belt 123.

In addition, the other side of the housing 110 is formed with a desorption filtrate outlet 114 for discharging the filtrate separated from the residue by the compression of the screw.

In addition, in the drying apparatus 100 according to the present invention, the pit moss is injected together to use the sewage and livestock waste as decomposed soil, and the pit moss inlet 113 is adjacent to the residue inlet 111 on an upper portion of the housing 110. Formed together.

Drying apparatus 100 according to the present invention injects microorganisms in the housing 110 to reduce the odor gas generated while the sewage and livestock waste and pit moss is dried. The microorganisms are connected to a separate microorganism storage tank 131 on the upper part of the housing 110 to supply the microorganisms into the housing 110 through the microorganism inlet 130. At this time, the microorganism inlet 130 is formed with a microorganism supply pump 132 to smoothly supply microorganisms.

In addition, the drying apparatus 100 according to the present invention has a separate deodorizer 141 of the housing 110 without immediately releasing odor gas generated while the sewage and livestock waste and pit moss are dried in the housing 110. It is connected to the other upper portion is filtered and discharged through the exhaust gas outlet 140. At this time, an exhaust gas automatic valve 142 is formed in the exhaust gas outlet 140.

In addition, the housing 110 of the drying apparatus 100 of the present invention is provided with a thermometer 115 and a pressure gauge 116 protruding outside to check the temperature and pressure therein, the thermometer 115 and the pressure gauge 116. Is connected to a separate automatic control device 160 is controlled.

The automatic controller 160 controls the driving motor 120, the thermometer 115, the pressure gauge 116, the automatic exhaust gas valve 142, the microbial supply pump 132, and the heating unit 150.

The heating unit 150 supplies hot air into the housing 110, and the sewage and livestock waste is dried by the supplied hot air. The heating unit 150 includes a blower 151 installed outside the housing 110, an electric heater 152 connected to the blower 151, and a discharge pipe header 153 connected to the electric heater 152. And branched from the delivery pipe header 153, the delivery pipe 154 is connected to the interior of the housing 110 in various directions, and supplies hot air generated from the blower 151 and the electric heater 152 into the housing 110. Done.

On the other hand, the screw of the drying apparatus 100 according to the present invention is mounted on the screw shaft 170 horizontally installed along the longitudinal direction of the housing 110 in the housing 110 of various impellers.

In the past, the impeller was only to grind and mix sewage and livestock waste while moving from one side of the housing 110 to the other, while in the present invention, by installing various types of impeller to grind, mix and compress It will play a role.

That is, one side of the screw shaft 170 is equipped with a crushing impeller 171 to perform the grinding process, the central portion of the screw shaft 170 is equipped with a mixing impeller 175 to perform the mixing process, the screw shaft 170 The other side of the) is equipped with a compression impeller 176 to perform the compression process. Here, the crushing impeller 171 the impeller spacing (pitch, pitch) is gradually widened so that the residue and pit moss chewy each other, the cracking action is possible, the compression impeller 176 is gradually narrowed impeller spacing Moisture generated while being strongly compressed to be sent to the stripping filtrate outlet 114.

On the other hand, the mixing impeller 175 mounted to the central portion of the screw shaft 170 is formed in three forms again.

The mixing impeller 175 has a uniform impeller 172, a crushing impeller 173, and a dispersing impeller 174 standing at a right angle with respect to the screw shaft 170 from one side. These three types of impellers 172 and 173 174), the debris and peat moss are more effectively crushed and mixed.

That is, the uniform impeller 172 has four radially extending wings 172a as shown in Figure 4 is formed with the same twist to move the residue in the other direction. As shown in FIG. 5, the crushing impeller 173 is integrally formed with a crushing blade 173b protruding like an ax in one direction at the end of four radially extending wings 173a. Finally, as shown in FIG. 6, the dispersing impeller 174 is integrally formed with the dispersing plate 174b wider than the blade 174a plate at the end of the four twisted wings 174a extending radially.

Therefore, the ground and pit moss firstly crushed by the crushing impeller 171 are guided by the uniform impeller 172, more finely broken by the crushing impeller 173, and evenly mixed while spreading by the dispersing impeller 174. do.

In the process of grinding, mixing and compressing the residues, it is necessary to adjust the peat moss mixed with the residues at a certain ratio to maintain the moisture content to some extent, and this moisture content control controls the rotational speed of the driving motor 120 to provide the residues By controlling the mixing ratio of, the moisture content of the pit moss is controlled. At this time, the rotational speed of the drive motor 120 is controlled by embedding an inverter in the automatic control device 160.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims. .

100: drying apparatus 110: housing
111: waste inlet 112: discharge outlet
113: Pitmos inlet 114: Tally filtrate outlet
115: thermometer 116: pressure gauge
120: drive motor 121: drive pulley
122: interlocking pulley 123: belt
130: microorganism inlet 131: microorganism storage tank
132: microbial supply pump 140: exhaust gas outlet
141: deodorizer 142: exhaust gas automatic valve
150: heating unit 151: blower
152: electric heater 153: delivery pipe header
154: transmission pipe 160: automatic control device
170: screw shaft 171: grinding impeller
172: uniform impeller 173: crushing impeller
174: dispersion impeller 175: mixed impeller
176: compression impeller

Claims (5)

delete A housing 110 in which a screw rotated by the driving motor 120 is embedded;
Residue inlet 111 and outlet 112 formed on one side and the other side of the housing 110 to input and discharge the sewage and livestock waste;
A desorption filtrate outlet 114 formed on the other side of the housing 110 to discharge the filtrate separated from the debris;
A pit moss inlet 113 which is formed adjacent to the waste inlet 111 to inject pit moss into the housing 110 together with the residue;
A microorganism inlet 130 for introducing microorganisms into the housing 110;
An exhaust gas outlet 140 for discharging malodorous gas in the housing 110;
A heating unit 150 for supplying hot air into the housing 110; And
And an automatic controller 160 for controlling the temperature and pressure in the housing 110 and the rotational speed of the driving motor 120.
The screw is formed in the spiral crushing impeller 171 that the pitch is gradually increased in one direction of the housing, the mixing impeller 175 is formed at a right angle in the center portion, the compression impeller 176 is gradually smaller in the other direction Is formed,
The mixing impeller 175 is composed of three impellers, a plurality of radially extending on one side of the uniform impeller 172 consisting of wings 172a having the same torsion angle, and a plurality of radially extending wings in the center A fracture impeller 173 having an ax blade-shaped shredding blade 173b protruded in one direction at the end of the blade 173a, and a plurality of radially extending blades at the other side thereof, and a blade 174a having the same twist angle. Sewage and livestock drying apparatus of sewage and livestock waste, characterized in that consisting of a dispersion impeller (174) formed a wider distribution plate (174b) than the wing plate. delete delete The heater 150 of claim 2, wherein the heating unit 150 includes a blower 151, an electric heater 152 connected to the blower 151, a discharge pipe header 153 connected to the electric heater 152, and , A drainage soil drying apparatus of sewage and livestock waste, characterized in that consisting of a discharge pipe 154 branched from the discharge pipe header 153 is connected to the various sections inside the housing (110).

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