KR101068514B1 - Sludge input device for sewage sludge processing system - Google Patents

Abstract

The present invention relates to a sludge injector for a sewage sludge treatment system, and in particular, a sewage sludge treatment system comprising a sludge mixing facility and a sludge drying facility having a conveyor belt therein to dry and discharge the sewage sludge while moving the sewage sludge. Sludge dosing device installed on the discharge side of the sludge mixing equipment and the input side of the sludge drying equipment and receiving sewage sludge discharged from the sludge mixing equipment to discharge the sewage sludge with a certain thickness on the conveyor belt of the sludge drying equipment. ; A measurement sensor installed in the sludge mixing facility for sensing a storage amount of sewage sludge; A plurality of solenoid valves installed between the sludge mixing facility and the sludge metering unit and opened and closed under external control; And a controller for controlling the amount of sewage sludge introduced into the sludge metering unit by opening and closing each solenoid valve according to the storage amount of sewage sludge measured by the measuring sensor.
According to the present invention as described above, when the sewage sludge is introduced into the sludge drying equipment from the sludge mixing equipment, the input of sewage sludge is easy and the drying efficiency can be relatively increased by injecting the sludge into a flat plate.

Description

Sludge input device for sewage sludge treatment system {SLUDGE INPUT DEVICE FOR SEWAGE SLUDGE PROCESSING SYSTEM}

The present invention relates to a sludge input device for sewage sludge treatment system, and in detail, when the sewage sludge is input from the sludge mixing facility to the sludge drying facility, the sludge is introduced into a flat plate through the sludge metering machine, and the sewage sludge is introduced into the sludge drying facility. The sewage sludge treatment system regulates the input amount to the sludge drying facility through the solenoid valve according to the amount of sewage sludge in the municipal sludge mixing facility, and attaches an ultrasonic sensor to the outlet of the sludge metering device to prevent the blockage of the outlet due to the sewage sludge. Sludge dosing device.

Conventional methods for treating sewage sludge include incineration, landfill, ocean dumping, stabilization using slaked lime, and earthworm treatment.

However, such conventional treatment methods are often limited by environmental regulations. Therefore, it is urgent to develop a new treatment method that can suppress the environmental pollution as much as possible to avoid the above restrictions.

In particular, in the treatment of sewage sludge, drying and weight reduction are important. In the related art, weight reduction is achieved by a simple drying method of simply removing heat by applying heat to sewage sludge. However, in the conventional weight reduction method, since the water of the sewage sludge is removed only by heating by a heat source, a considerable amount of energy is consumed for this purpose, resulting in excessive energy costs for the sewage sludge treatment.

In order to solve this problem, Patent No. 10-0541159 filed by the present applicant (name: sewage sludge treatment apparatus using microwave and heating) has been developed and applied.

The sewage sludge treatment apparatus using microwave and heating uses microwave and heating for drying and reducing weight in the treatment of sewage sludge as shown in FIG. 1. In FIG. 1, reference numeral 10 denotes a sludge drying facility 10 provided in the sewage sludge treatment apparatus. The sludge drying facility 10 includes a microwave generator 11 for generating microwaves and an inside of the sludge drying facility 10. A hot air heater 12 for heating to a predetermined temperature is provided.

In the microwave generator 11, microwaves having a frequency range of 2,450 MHz are generated. At this time, the wavelength of the microwave is within about 5cm. The hot air heater 12 generates high temperature hot air and blows it to sewage sludge.

Sewage sludge is first dewatered to a predetermined degree by the centrifugal concentrator 30 before being introduced into the sludge drying facility 10. At this time, the primary dewatered sewage sludge has a water content of about 75 to 80%. The introduced sewage sludge is placed on the conveyor belt 13 to pass through the sludge drying facility 10. In the microwave generator 11 of the sludge drying facility 10, microwaves are generated and irradiated to the sewage sludge. When microwaves are irradiated on sewage sludge, ions and polar substances (for example, water, pigments, fats, etc.) contained in the sludge are caused by the energy of microwaves to generate molecular vibration by repeating the array conversion at a very high speed. Therefore, the gap water inside the sludge is discharged to the outside in a short time to improve the water content reduction effect.

On the other hand, in addition to irradiating the sewage sludge with microwaves, the sewage sludge is heated by the hot air heater 12. The hot air heater 12 functions as a heat source to send hot hot air to the sewage sludge. That is, heat generated from the hot air heater 12, such as hot air, is applied to the sewage sludge irradiated with microwaves. Therefore, the water is evaporated from the sewage sludge by such heating, and the sewage sludge is dried to form a cake and discharged from the sludge drying facility 10.

On the other hand, before the sewage sludge which is first dehydrated by the centrifugal concentrator 30 and water is removed to a certain degree from the sludge drying facility 10, charcoal and powdered activated carbon are added to the sewage sludge. That is, in Figure 1, the member number 20 is a sludge mixing facility 20, and after mixing the sewage sludge supplied from the centrifugal concentrator 30 with the charcoal and powdered activated carbon in the sludge mixing facility (20) and then the sludge drying facility ( 10) will be put into.

In FIG. 1, reference numeral 40 denotes a condenser 40, and condensed water evaporated during the sludge drying process in the sludge drying facility 10 by the condenser 40, thereby utilizing the condensed water as an external carbon source. do.

The sewage sludge treatment apparatus includes a biofilter 50 as a device for removing odors from gases generated during decomposition, solubilization and reduction of sewage sludge. The gas generated from the sludge drying facility 10 is supplied to the biofilter 50 via the condenser 40. The bio filter 50 includes bacteria (Pseudomonas sp., Thiobacillus thiobacillus sp., Nitrosomonas sp., Bacillus sp. Bacillus sp, etc.) that decompose organic and inorganic matters of microorganisms. Therefore, the odor contained in the gas supplied to the biofilter 50 is removed by the biofilter 50, and the gas is discharged to the outside without the odor. Therefore, occurrence of odor due to sewage sludge treatment can be prevented. In the drawing, reference numeral 51 denotes a fan 51 for blowing gas.

However, in the conventional sewage sludge treatment apparatus using microwave and heating, it is difficult to input the sewage sludge by the free fall method without discharging the sewage sludge from the sludge mixing facility to the sludge drying facility by the free fall method. There is a problem in that the drying efficiency is poor.

The present invention is to solve the above problems, when the sewage sludge is introduced into the sludge drying equipment in the sludge mixing equipment, the input of sewage sludge is easy, and the drying efficiency is relatively increased by injecting the sludge into a flat plate through the quantitative sludge feeder. It is an object of the present invention to provide a sludge dosing device for sewage sludge treatment systems.

In addition, the present invention is to increase the efficiency of the system by adjusting the input amount to the sludge drying equipment through the solenoid valve according to the amount of sewage sludge of the sludge mixing equipment when the sewage sludge is introduced into the sludge drying equipment in the sludge metering equipment, the sludge metering machine Another object of the present invention is to provide a sludge injector for a sewage sludge treatment system to prevent an occlusion of an outlet due to sewage sludge by attaching an ultrasonic sensor to an outlet of the sewage sludge.

Features of the present invention for achieving the above object,

A sewage sludge treatment system comprising a sludge mixing facility and a sludge drying facility having a conveyor belt therein to dry and discharge sewage sludge, which is installed on the discharge side of the sludge mixing facility and the input side of the sludge drying facility. A sludge metering input unit for supplying sewage sludge discharged from the sludge mixing plant to discharge sewage sludge with a predetermined thickness on a conveyor belt of the sludge drying plant; A measurement sensor installed in the sludge mixing facility for sensing a storage amount of sewage sludge; A plurality of solenoid valves installed between the sludge mixing facility and the sludge metering unit and opened and closed under external control; And a controller for controlling the amount of sewage sludge introduced into the sludge metering unit by opening and closing each solenoid valve according to the storage amount of sewage sludge measured by the measuring sensor.

Here, the sludge metering unit is formed in a rectangular box shape of the inside, the top is wider, the body is formed in a narrower toward the bottom; An inlet formed vertically extending from both ends of an upper surface of the main body, and each of the solenoid valves installed and connected to each other by the sludge mixing facility and a conduit; And an outlet formed to protrude vertically from the center of the bottom of the main body in the longitudinal direction.

Here, the main body is further provided with a stirrer in the form of a screw in the longitudinal direction between the inlet and the outlet to discharge the sewage sludge introduced through the inlet to the outlet.

Here, the main body is further attached to the ultrasonic sensor on the outer surface of the outlet to prevent the attachment of sewage sludge.

According to the sludge input device for the sewage sludge treatment system of the present invention configured as described above, when the sewage sludge is introduced into the sludge drying equipment from the sludge mixing equipment, the sewage sludge is easily introduced into the flat form through the sludge metering machine, and the sewage sludge is easily dried. The efficiency can be made relatively high.

In addition, according to the present invention, when the sewage sludge is introduced into the sludge drying facility in the sludge metering unit, the efficiency of the system is increased by adjusting the input amount to the sludge drying facility through the solenoid valve according to the amount of sewage sludge in the sludge mixing facility. An ultrasonic sensor can be attached to the outlet of the device to prevent the blockage of the outlet due to sewage sludge.

1 is a schematic diagram schematically showing the configuration of a conventional sewage sludge treatment apparatus using microwaves and heating.
Figure 2 is a schematic diagram showing a state in which the sludge input device for sewage sludge treatment system according to the present invention is applied to the sewage sludge treatment system.
Figure 3 is a perspective view showing the configuration of the sludge metering device of the sludge input device for sewage sludge treatment system according to the present invention.
4 is a cross-sectional view taken along line AA of FIG. 3.
5 is a cross-sectional view taken along line BB of FIG. 3.

Hereinafter, with reference to the accompanying drawings the configuration of the sludge input device for sewage sludge treatment system according to the present invention will be described in detail.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

2 is a schematic view showing a sludge input device for sewage sludge treatment system applied to the sewage sludge treatment system according to the present invention, Figure 3 is a configuration of the sludge metering device of the sludge input device for sewage sludge treatment system according to the present invention 4 is a sectional view taken along the line AA of FIG. 3. 5 is a cross-sectional view taken along line B-B in FIG. 3. In FIG. 2, the same code | symbol is attached | subjected about the same part as FIG. 1, and the duplication description is abbreviate | omitted.

2 to 5, the sludge injector 100 for sewage sludge treatment system according to the present invention is the sludge metering unit 110, the measurement sensor 120, the solenoid valve 130, the controller 140 It consists of

First, the sludge metering unit 110 is installed on the discharge side of the sludge mixing equipment 20 and the input side of the sludge drying equipment 10 to receive the sewage sludge discharged from the sludge mixing equipment 20, the sludge drying equipment 10 Sewage sludge is discharged to a certain thickness on the conveyor belt (13).

Here, the sludge metering unit 110 is composed of a main body 111, the inlet 113, the outlet 115, the stirrer 117 and the ultrasonic sensor 119 as shown in Figs. .

The main body 111 is formed of a metal or synthetic resin material in the form of an empty rectangular box, the top of which is wider, and is formed in a narrower shape toward the bottom.

The inlet 113 is formed to extend vertically at both ends of the upper surface of the main body 111, the solenoid valve 130 to be described later is provided, respectively, is connected by the sludge mixing facility 20 and the conduit 21, respectively.

The outlet 115 is formed to protrude vertically in the longitudinal direction from the center of the bottom surface of the main body 111.

The stirrer 117 is installed in the longitudinal direction between the inlet 113 and the outlet 115 so as to discharge the sewage sludge introduced through the inlet 113 in the form of a screw to the outlet 115.

The ultrasonic sensor 119 is installed on the outer surface of the discharge port 115 to prevent the sewage sludge is attached to the inside of the discharge port 115 to block. In addition, due to the ultrasonic waves generated by the ultrasonic sensor 119, the fluidity of sewage sludge is increased, and internal voids are generated to increase drying efficiency.

In addition, the measurement sensor 120 is installed in the sludge mixing facility 20 to sense the storage amount of sewage sludge. Here, the measurement sensor 120 may measure the amount of sewage sludge through the volume using an optical sensor, may measure the amount of sewage sludge through the weight using a weight sensor, and the application of various sensors It is possible.

In addition, the solenoid valve 130 is installed between the sludge mixing facility 20 and the sludge metering unit 110 is opened and closed under the control of the controller 140 to be described later.

On the other hand, the controller 140 controls the amount of sewage sludge introduced into the sludge metering unit 110 by opening and closing each solenoid valve 130 according to the storage amount of sewage sludge measured from the measurement sensor 120. At this time, the controller 140 opens only one solenoid valve 130 when the storage amount of sewage sludge measured from the measurement sensor 120 is less than the reference storage amount, and all solenoid valves 130 when the storage amount of the sewage sludge exceeds the reference storage amount. Open) to adjust the amount discharged from the sludge metering unit 110.

In addition, the sludge injector 100 for sewage sludge treatment system of the present invention is installed a separate lifting device for raising and lowering the sludge metering machine 110, or the outlet 115 of the sludge metering machine 110 is It is possible to adjust the thickness of the sewage sludge discharged on the conveyor belt 13 of the sludge drying equipment 10 by raising and lowering the sludge metering unit 110 or the discharge port 115 according to the amount of sewage sludge. .

Hereinafter, with reference to the accompanying drawings the operation and operation of the sludge input device for sewage sludge treatment system according to the present invention will be described in detail.

First, the controller 140 checks the storage amount of sewage sludge in the sludge mixing facility 20 from the measurement sensor 120.

Thus, if the storage amount of sewage sludge is less than the reference storage amount, only one solenoid valve 130 is opened. If the storage amount of sewage sludge exceeds the reference storage amount, all the solenoid valves 130 are opened.

When the solenoid valve 130 is opened, sewage sludge is introduced into the main body 111 of the sludge metering machine 110 through the sludge mixing facility 20 and the conduit 21. At this time, the sewage sludge introduced while the stirrer 117 of the sludge metering unit 110 is rotated is evenly positioned in the main body 111.

Then, the sewage sludge introduced into the main body 111 is discharged on the conveyor belt 13 of the sludge drying facility 10 in a predetermined thickness and a certain amount through the discharge port 115 by its own weight. At this time, since the ultrasonic sensor 119 attached to the outlet 115 is operated, attachment of sewage sludge to the inside of the outlet 115 is blocked. In addition, when the ultrasonic wave is irradiated with sewage sludge, fluidity of the sewage sludge is increased, and internal voids are generated to increase drying efficiency.

As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

10: sludge drying equipment 20: sludge mixing equipment
110: sludge metering machine 111: main body
113: inlet 115: outlet
117 stirrer 119 ultrasonic sensor
120: measuring sensor 130: solenoid valve
140: controller

Claims (4)

delete In the sewage sludge treatment system comprising a sludge mixing facility and a sludge drying facility provided with a conveyor belt therein to dry and discharge sewage sludge,
The inside is formed in the form of an empty rectangular box, the top of which is wider and narrower toward the bottom, and is installed on the discharge side of the sludge mixing plant and the input side of the sludge drying plant to discharge the sewage sludge from the sludge mixing plant. A main body discharging sewage sludge with a predetermined thickness on a conveyor belt of the sludge drying facility, vertically extending from both ends of an upper surface of the main body, and an inlet connected to each other by the sludge mixing facility and a pipeline; A sludge dosing device comprising an outlet formed to protrude vertically in the longitudinal direction from the center of the bottom of the main body;
A measurement sensor installed in the sludge mixing facility for sensing a storage amount of sewage sludge;
A plurality of solenoid valves installed at the inlets of the sludge metering unit and opened and closed under external control; And
And a controller for controlling the amount of sewage sludge introduced into the sludge metering doser by opening and closing each solenoid valve according to the storage amount of sewage sludge measured by the measurement sensor. The method of claim 2,
The main body,
Sludge injector for sewage sludge treatment system, characterized in that it is further provided with a screw-type stirrer in the longitudinal direction between the inlet and outlet to discharge the sewage sludge introduced through the inlet to the outlet. The method of claim 2,
The main body,
Sludge input device for sewage sludge treatment system, characterized in that the ultrasonic sensor is further attached to the outer surface of the outlet to prevent sewage sludge is attached.

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