JP3340083B2 - Continuous treatment equipment for sewage sludge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for continuously treating sludge generated in sewage treatment facilities ( including sewage treatment facilities for human waste treatment sludge, food manufacturing industry, livestock waste, etc.).

[0002]

2. Description of the Related Art The scale of sewage treatment facilities is increasing (as is the case with human waste treatment facilities and various sewage treatment facilities), and the amount of generated sludge is also increasing, which poses a problem in treatment. In order to solidify into useful building materials, etc., there is a problem that strength is not obtained due to mainly organic substances and there is a problem of smell. Attempts have been made to use fertilizer (Japanese Patent Application No. 9-280460).
No.), the amount of fertilizer produced is large, and the current situation is overproduction.

[0003]

The sludge generated in sewage treatment sludge, human waste treatment facilities and various kinds of sewage treatment facilities can be effectively used, but incineration is also an option as a waste treatment means. One. However, at the time of incineration, measures against the generation of dioxin are required, and a heating source is also required. Therefore, the present inventor studied a continuous sludge treatment apparatus such as sewage treatment capable of continuously treating a large amount of sludge generated in a sewage treatment facility or the like.

[0004]

As a result of studying the above-mentioned problems, a mixer for mixing sewage treated sludge and carbide and a device for facilitating the combustion of sewage treated sludge are provided to a device for carbonizing organic matter such as sludge. The granulated part and the continuous carbonized part are sequentially arranged, and the continuous carbonized part has an object supply part on the upper part thereof, and continuously treats by adding a carbon-containing auxiliary agent to sludge or organic waste containing organic matter. An apparatus , wherein a means for feeding back the carbide obtained by the continuous carbonization unit is provided between the supply unit for the object to be treated in the continuous carbonization unit and the carbide outlet at the lower part, and continuously converts the carbide from the sewage sludge or the organic waste. Sewage treatment sludge characterized by continuous use of sewage sludge or organic waste by using it by feeding it back to the carbonization unit
A continuous mud treatment device was used.

[0005] The sewage treatment sludge of the continuous processing apparatus has a object to be processed supply portion thereon has a continuous carbonization section, an apparatus for continuous treatment with the addition of carbon-containing auxiliaries sewage sludge < a sewage sludge granulation / drying section to be supplied to the treatment object supply section, and a means for feeding back the carbide obtained by the treatment as a means for supplying a carbon-containing auxiliary agent is continuously carbonized. The sewage sludge is continuously treated by feeding the carbide from the sewage sludge back to the continuous carbonization section, provided between the target object supply section of the section and the lower carbide outlet. An organic gas collecting unit is provided in the continuous carbonizing unit, and the organic gas collecting unit is guided to a combustion device that burns the collected organic gas, or cools the collected organic gas to add wood vinegar or other vinegar. It is feasible to collect organic gas.

[0006]

Figure 1 DETAILED DESCRIPTION OF THE INVENTION is a side view of a continuous <br/> connection processor configuration of wastewater treatment sludge of the present invention. The wastewater treatment sludge communicating <br/> connection processing apparatus has a object to be processed supply portion 5 to the top of the continuous carbide portion 4, adding carbon-containing auxiliaries sewage sludge in the left in FIG. to a device that continuously carbonized in the continuous carbonization unit 4. A granulating unit 19 and a drying unit 20 for facilitating combustion of the sewage sludge to be supplied to the supply unit 5 are provided. Almost all of the carbide obtained in the continuous carbonization section 4 is fed back as a supply means of the carbon-containing auxiliary agent. The feedback means 18 converts the sewage sludge and the carbide from the carbide outlet 6 of the continuous carbonization section. It is designed to carry to the mixing machine 21 for mixing. Mixing machine
It is sent by a conveyor from 21 to the granulating unit 19. The carbides from the sewage sludge are fed back to the continuous carbonization unit and used to continuously treat the sewage sludge.

[0007] Figure 2 is a continuous process instrumentation sewage sludge of the present invention
It is a carbonized part longitudinal cross-sectional view of an installation . FIG. 3 is an enlarged view of a portion A in FIG. In carbonized part in the wastewater treatment sludge in continuous processing apparatus has a cylindrical casing 2 on the machine base 1,
A continuous carbonized portion 4 having an inner cylinder 3 is provided, the upper part of which is an object supply section 5, and the lower part of the continuous carbonized portion 4 is a tapered carbide outlet 6 having a narrow lower portion. A suction duct 8 for an organic gas collecting unit 7 is provided below the continuous carbonizing unit 4. This suction duct 8 is connected to an exhaust fan 9, but in the example shown in FIG. Organic gas such as wood vinegar generated as a result of carbonization is forcibly sucked by the exhaust fan 9, and is cooled by the cooling water tank 10.
Collected by The carbide (activated carbon) discharged from the carbide outlet 6 is re-used as an auxiliary material by a feedback means 18 (shown by a one-dot chain line) of a conveyor (not shown) so that the carbide (activated carbon) discharged from the carbide supply port 6 is fed back between the processing object supply units 5. Is being used.

[0008] Normally, when carbonized in a reducing atmosphere to obtain a carbide, wood vinegar and other organic gases are generated. When the organic gas collecting unit 7 is provided below the carbonization unit 4 and suction is performed as in the apparatus of the present invention, the lattice is clogged in a device in which a lattice is simply provided below the carbonization unit 4 and hinders continuous processing. . Therefore, the sewage treatment sludge of a continuous processing apparatus of the present invention, is shown in detail in FIG. 3, below the continuous carbonization unit 4 includes a plurality of passage holes 11a,
An upper opening plate 11 having 12a and a lower opening plate 12 are provided.
The upper and lower passage holes 11a and 12a are located at the same position in the vertical direction depending on the position where the upper opening plate 11 and the lower opening plate 12 are present, so that the carbide 4 can drop. A downward scraping plate 11b is provided on the bottom surface of the upper opening plate 11 in order to promote the falling. The upper opening plate 11 is connected to a cylinder 15 provided on the machine base 1 side as a swinging means 14, and is swingably suspended from the inner wall of the inner cylinder 3 by a suspension band 13.

Next, an example of continuous treatment of sludge will be described. As shown in Table 1, 4,880 g of sludge generated by the microbial activation treatment of the food processing facility was fed with 1,440 g of the carbide obtained in the previous step as an auxiliary and fed back. The average moisture of the mixture is 7
0.6%, and the amount of sewage sludge in 6,320 g
It is 855g. The mixture was thoroughly mixed and stirred, granulated using a granulator, and then dried. This was put in the carbonized part 4 and a burner flame was caused to act on the carbonized part 4 until the initial carbonization was stabilized. Carbonization of the reducing atmosphere was performed in a state where there was almost no supply of air, and the carbide was dropped downward by periodically moving the upper opening plate 11 left and right by the rocking means 14. At this time, the exhaust fan 9 was turned to forcibly remove the organic gas such as wood vinegar generated as a result of carbonization from the suction duct 8.

[0010]

[Table 1]

FIG. 4 shows a diagram of the carbonization process in the apparatus of the present invention. As a result of carbonization by this reducing atmosphere,
948 g of carbide were obtained from g of sludge + carbonization, which means that 907 g of wood vinegar was volatilized. By feeding back and using a total amount of 948 g of the obtained carbide,
It could be processed continuously. In addition, it is also possible to commercialize a part as carbide in view of the balance. Table 2 shows the analysis results of an example of the obtained carbide. Some adsorption capacity is observed in the adsorption test. It is considered that the activation treatment further enhances the adsorption ability.

[0012]

[Table 2]

As shown in FIG. 5, it is also possible to forcibly suck an organic gas such as wood vinegar generated as a result of carbonization from the suction duct 8 with an exhaust fan 17 and burn and dispose it in a combustion furnace 16.

[0014]

According to the present invention, sludge, buckwheat husks, coffee grounds, and the like generated in human waste treatment facilities and various sewage treatment facilities, which are generated in large quantities and are difficult to dispose of, can be disposed of by continuous operation. The sewage treatment sludge of a continuous processing apparatus, do not occur any trouble occurring time, which enables the discharge-free stable operation of incineration ash or residue like.

[Brief description of the drawings]

1 is a side view of a sewage treatment sludge of a continuous processing apparatus of the present invention.

2 is a longitudinal sectional view of a carbonization of sewage sludge in a continuous processing apparatus of the present invention.

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is a carbonization process diagram.

FIG. 5 is a longitudinal sectional view of the continuous waste disposal apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Machine stand 2 Casing 3 Inner cylinder 4 Continuous carbonization part 5 Processing object supply part 6 Carbide take-out port 7 Organic gas collection part 8 Suction duct 9 Exhaust fan 10 Cooling water tank 11 Upper opening plate 11a Passing hole 12 Lower opening plate 12a Passage hole 13 Suspension band 14 Swing means 15 Cylinder 16 Combustion furnace 17 Exhaust fan 18 Feedback means 19 Granulation unit 20 Drying unit 21 Mixer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C02F 11/06 ZAB

Claims (2)

(57) [Claims] 1. A mixer for mixing sewage treatment sludge and carbide, a granulating unit for facilitating combustion of the sewage treatment sludge, and a continuous carbonization unit are sequentially arranged, and the continuous carbonization unit is provided at an upper portion thereof. has a object to be processed supply portion, an apparatus <br/> continuous process by adding a carbon-containing additive in the sludge or organic waste containing an organic, a plurality of passage holes under the continuous carbide portion Have
It consists of an opening plate and a lower opening plate, and the upper and lower passage holes are
The same position in the vertical direction depending on the position of the lower opening plate
It allows the carbide to fall, and a downward scratch
Set up plate and set upper plate as swinging means on machine side
Coupled to the cylinder, provided between said successive object to be processed supply portion of the carbonization unit thus carbides means for feeding back the obtained continuous carbonization unit and the lower carbide outlet, from sewage sludge or organic waste carbides are allowed to use the feedback to the continuous carbonization unit, a continuous processing apparatus of sewage sludge, characterized in that the continuous process the sewage sludge or organic waste. 2. An organic gas collecting section is provided below the continuous carbonizing section.
The organic gas collected by the organic gas collecting section is sent to a combustion device.
The continuous treatment of sewage sludge according to claim 1, wherein the sludge is guided and burned.
Equipment .