JPS60112684A - Sludge composting treatment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for composting raw sludge.

In recent years, with the spread of sewage systems, sewage sludge continues to be generated all over the country, and the amount thereof continues to increase. A common method for treating such sewage sludge is to dispose of it in a landfill, but considering the progress of urbanization in the future, securing a landfill site will become even more difficult. Sewage Iυ mud is also incinerated, but this requires an incinerator and a large amount of heavy oil, which not only increases costs, but also requires the disposal of incinerated ash. Consideration has therefore been given to composting sewage sludge and using it for green farmland, but conventional composting methods, which simply pile up sewage sludge to form ridges, have the advantage of being low cost. However, due to poor ventilation, it is necessary to activate fermentation by aerobic bacteria.
Composting takes time. On the other hand, in the conventional method of forcing air to circulate through piled iron, ventilation grooves are formed in the concrete floor surface and air is forcibly sucked through the ventilation grooves, resulting in high equipment costs. Another problem is that the upper part of the ridges has insufficient ventilation, and the ventilation grooves are easily clogged with sludge.

Therefore, we provide a method for composting raw sludge that solves the problem of sludge, and its characteristics are that a plurality of frames are arranged face down at appropriate intervals on a predetermined plane, and then A suitable number of flexible pipes having a large number of ventilation holes are arranged on the frame E or its side, and then a traveling type mixing ridge-making device is straddled over one end of the pipe E, and this mixing ridge is The erecting device is run toward the other end of the pipe, and each of the above-mentioned frames after the mixed ridge-raising device has passed is erected to support the pipe, and the mixed ridge-raising device is attached to the portion of the pipe supported by the frame. Raw sludge is dropped from the pipe to form ridges, then an air compressor is connected to the pipe and the air compressor is operated to circulate air through the iron, thereby activating fermentation by aerobic bacteria in the iron. Once the organic matter has been decomposed and the ridges have been composted, the pipes are pulled up in sequence from one end of the pipe, and the frame of the pulled-up area is removed. The purpose of this method is to turn back the pipe-drawn part and transport the turned-over compost to a predetermined location. Since it is a method of forcibly aerating the ridges, fermentation by aerobic bacteria can be activated and composting can be done in a short time. In addition, ventilation is carried out using the frame, the piping, and the air compressor 7, and the equipment cost can be reduced compared to the conventional forced ventilation method. In addition, the entire ridge can be ventilated, and uneven ventilation will not occur. Furthermore, after the pipe is pulled out and the frame is removed, the ridges are cut back and transported to the designated location, so the pipe and frame do not get dirty when cut back, and sludge does not flow into the ventilation groove as in the case of conventional methods. There is no problem of clogging.

Hereinafter, one embodiment of the present invention will be described based on the drawings. (1
) I/'i A frame body arranged at appropriate intervals on a predetermined plane (2), comprising - a triangular part having a horizontal bar-shaped part (3A) of wood and two inclined bar-shaped parts (3B); (3), both ends of the horizontal bar-shaped part (3A) and both inclined bar-shaped parts (3B
) with a U-shaped frame (4) welded to the top. (5)
(7) is a traveling mixer ridge raising device, which includes a trolley (8), It consists of a screw tweeter (9) and a receiving frame Ov of raw sludge (10).
2 is a tank car, α field is an air compressor, 0→ is a traveling type switching device, which is composed of a truck α, a switching section m, a packet conveyor (171), and two belt conveyors (G). qO is a front pipe pulling device, which includes a pair of carts e1) located on both sides of the ridge) and each cart eυ. It consists of a pillar (2) erected by Evc, and a drum with a flange whose both ends are rotatably supported by bearings at the upper end of each pillar (2). (b)F
i) ItJ side connecting rod for connecting the front side pipe pulling device 11 to the switching device @-h
The pillars erected at
7) and a drum (to) with a flange 6 rotatably supported. For both drums) Of □□□,
At least one side is rotated in a lotus pattern by Tanabata.
(5) shall be forcibly pulled. (g) is the rear connecting rod that connects the rear pipe pulling device (2) to the tamp car, and (2) is the tent house.

A method for composting raw sludge αQ will be explained based on the configuration described above. First, as shown in FIG. 1(a), a predetermined plane (2)
Next, arrange the revised frames (1) face down at appropriate intervals. Next, a three-wooden pipe (5) having a large number of ventilation holes (6) is installed in the frame (1).Next, a tashipuka (a) loaded with raw sludge a1 and a mixing ridge-making device ( 7) is crossed over the -y; Each frame (1) after passing through
The U-shaped frame (4) of the frame body (1) is held in the annular groove of the pipe (5) as shown in Fig. 7, thereby raising the center pipe (5) and raising the pipes ( 5) is supported lowly. Next, as shown in Figure 1 (1)), the raw sludge is transferred from the tanker 4 to the part supported by the frame (1) of the pipe (5) via the screw tweeter (9) of the mixing ridge device (7). Drop a0 to form four ridges. Next vJ
Figure 1 (c) As shown in K, the ridges are attached to the tent house (toward).
Cover it with a pipe (5), connect the pipe (5) to the compressor (P) and J (0:4), and operate the false compressor (b).
Suction. As a result, external air passes through the ridges (A) and enters the pipe (5) from the vent (6), activating fermentation by aerobic bacteria in the ridges and decomposing organic matter. Next, once the ridges have been composted, cut off the Esecombresa a husk from the pipe (5) and remove the tent house ■.
A cutting device (1) in which a front pipe pulling device (0) is connected to a position facing one end of the ridge (A) by a front connecting rod (7).
Place the tamp car (b) which connects the rear SS puller device with the rear connecting rod (b), and then move the next VC.
Grasp one end of the pipe (5) and raise it to the drum (c) of the lj+1 pipe puller device 01, then pull the cutter device (1
41 and the tanker @ in the direction of arrow (8),
Cut back the pipe pull E of the ridge (E) at the cut-back part oQ,
The compost that has been turned is loaded onto the loading platform of the packet competition t'aη and the belt competition j' (ll (via l)). (1) is carried out to the side of the ridge (7) to a position where it does not become a device.Once the turning has progressed to a certain extent, the first
As shown in Figure (d), one end of the pipe (5) is hung down onto the plane (2) via the drum of the rear pipe pulling device (2). When the loading platform of the dump truck (6) is full of compost, stop the turning operation, release the connection using the rear connecting rod ■, drive the dump truck (Q) loaded with the compost to the designated location, and place a new All you have to do is bring the tamp truck @ between the rear pipe puller (a) and the turning device α→, connect the rear connecting fixture to the new tanker (6), and start the turning operation again.

As described above, according to the present invention, since the ridges are forcibly aerated, fermentation by aerobic bacteria can be activated and composting can be performed in a short time. In addition, ventilation is carried out using a frame, a pipe, and an air compressor, and the equipment cost can be reduced compared to the conventional forced ventilation method. In addition, ventilation can be carried out throughout the ridges, and uneven ventilation does not occur. Furthermore, after the pipe is pulled out and the frame is removed, the ridges are cut back and transported to the designated location, so the pipe and frame are not used as a device when cutting back, and the ventilation grooves become clogged with sludge, unlike in conventional methods. No problems arise.

[Brief explanation of the drawing]

The figure shows one embodiment of the present invention, @1 figure (a) to (d)
II'i An explanatory diagram explaining the composting method of raw sludge, Fig. 2 Fi is a tr-n arrow view of Fig. 1 (b), Fig. 3 is a tr-n arrow view of Fig.
Fig. 4 is a view taken from the direction of the IV-N arrow in Fig. 1 (d), Fig. 5 is a side view of the main parts, and Fig. 6 is a view taken from the
147 is a view taken along the line ■-■ in FIG. 6. (1)...Frame body, (4)...U-shaped frame, (5)...
Pipe, (6)...Vent, (7)...Mixing ridge device, (14...Raw sludge, (to)...Tamp car,
0... Esecompressa, (141... Cutting device, 4... mfl 1jll r\eve pulling device,
4...ridge, (b)...rear pipe lifting device a Agent Yoshihiro Moriki

Claims (1)

[Claims] 1. Arrange a plurality of frames face down at appropriate intervals on a predetermined plane, then arrange an appropriate number of flexible J\Eves with a large number of ventilation holes on or beside the frames, and then At the same time, the traveling type mixed ridge-making device is straddled over one end of the pipe, and the mixed ridge-making device is moved toward the other end of the pipe, and the E-press frame body is erected after the mixed ridge-making device has passed. to support the pipe, and form ridges by dropping raw sludge from a mixing ridge-making device onto the part of the pipe supported by the frame, and then connect a 1-Yacomple Sosa to the pipe and 11
'7 Operate the kombu tsusa to circulate air in the ridges,
This activates the fermentation in the aerobic box in the ridge and decomposes the organic matter. Next, when the ridge becomes compost, the ferns are pulled out in order from one end and the soil is removed. This method of composting raw sludge is characterized by removing a frame at a location and at the same time, using a traveling cut-back device, to cut back the pipe-drawing portion of the ridge, and transporting the turned-over compost to a predetermined location.