JPS6029526B2 - Sand separation equipment for sewage sedimentation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for carrying out sewage silt that settles and accumulates in a sewage settling basin and separating and treating sewage into three parts: perishable organic waste, non-perishable inorganic substances, and organic substance-containing sewage. After processing, the so-called garbage and sand are packaged and unloaded in a fixed position calendar for easy transportation.

Conventionally, the following devices have been used to transport the accumulated sand in the settling basin to the surface of the water.

○｝ ``V-bucket conveyor'', in which a bucket is attached to a link belt and conveys bast through its endless drive; [2' grab-bucket type device, in which a large estimated amount is conveyed in batches using a grab-type bucket , {3l A flight is attached to the link belt, and the sand is driven endlessly parallel to the pond bottom to a certain position, or a screw conveyor is used to similarly push the accumulated sediment to a certain position, and the accumulated sediment is transferred to a V bucket conveyor. Or a ``connected conveyance line type device'' that conveys all sediment along with water using a pump, '4}
``Traveling V-bucket conveyor type device'' or ``traveling grab bucket type device'' that enables traveling of the above '1} and (2), '5' ``Various combination types due to external factors'' of the pond sand area .

In addition to the five types mentioned above, there are other types of transporting equipment that can be called applications of industrial machinery, but they do not escape from the so-called transporter, and the separation of sand and moisture is carried out on the way to the surface of the water. In the case of buckets, they are made of perforated plates or silk-like material, and in the case of transport machines where it is difficult to separate moisture during transport, or so-called "draining", the water is drained in the transport line. The current situation is that In this case, if containers such as V-buckets and grab buckets are manufactured using perforated plates or silk-like materials, the manufacturing technology will be difficult, and if special products are used, they will need to be replaced within a short period of time due to maintenance reasons. It is difficult to obtain products. In addition, depending on the nature of the sand, there have been cases where drainage itself has not been possible at all, resulting in unnecessary processing. Furthermore, even if the sediment, which is a waste of sewage, is carried out onto the water, the conveyance line is equipped with a so-called material sliding type moving machine with a drive machine, such as an endless chain conveyor, belt conveyor, or screw conveyor, or a loading belt moving machine. Therefore, it can be said that the belt moving machine requires most of the power, and transportation cannot be carried out unless it requires twice the energy to change the position of the sand itself. Therefore, from the point of view of resource and energy conservation, the movement of materials against each other causes wear and tear and requires surplus power, which is not efficient. On the other hand, as a way to make effective use of potential energy, it is better to apply the principle of inertia Cardalembert to make the pillow sand and its container lightweight and strong, and to make it equipped with wheels that only provide rolling resistance. good.
In this case, there is an advantage that the vehicle can be moved without power on some slopes.
Next, the sedimentary material in the pillow sand pond is called normal sediment, and the suspended material is called screen sludge, but if you analyze the sand and look at the state of aggregation of the solid materials, it can be seen that it is a part of garbage. Thin garbage and microscopic debris of putrefying organic substances are present with moisture, and some are stuck around pure sand, so they are carried out, transported, stored, transported in the same state, driven around the city by transport vehicles, and disposed of. This is not desirable from an environmental and occupational health perspective due to the scattering and adhesion of filth during handling. The sediment that is estimated to have settled under the water surface is high BOD sewage, but it is in a state where it is coated over a substance with a large amount of putrefying organic matter, so the odor level is also directly from the sewage. It is smaller than the original, and since it does not directly touch the eyes, it feels less like dirt. Sand deposits, whose characteristics change depending on the velocity of the sewage in the sand pond, are the accumulation of thin layers due to natural sedimentation, and depend on the age of the inflowing sewage and the lifestyle of the local residents.
The fallout varies depending on changes in morals, etc.

If the layers that have been deposited through natural sedimentation are transferred using conventional secondary sand transporters and transporters, it is difficult to achieve a completely sealed system and it is difficult to call this a good method. It is an object of the present invention to provide a device that eliminates the drawbacks of the conventional devices as described above. The present invention will be explained based on the drawings. FIG. 1 and FIG. 2 are a plan view and a front view, respectively, showing an embodiment of the present invention. In both figures, the traveling girder 5 that spans two or several ponds such as Tsugisuna 1 and 2 is a rail 1 installed at the edge of the pond.
4. Run on top. A transverse truck 6 is movably provided on the traveling girder 5, and a pump 3 is hung thereon, so that the pump 3 can be moved to any position and the structure is such that the pillow sand 16 in the sand storage part can be sucked up. The waste processed by the sand and garbage separator 7 loaded on the traversing trolley 6 is discharged into a garbage pack 10 and a sand pack 9, respectively, and when the capacity is nearly full, they are sealed and removed from the outside air. Cut off. The packs 10 and 9 are loaded on a pack truck 8 that can further travel on the traversing truck 6. The pack trolley 8 is made connectable so that it can be transferred to a ramp 11 for running the trolley if its fixed odor is released. Third
The figure shows an example of the flow of the sand separator 7 loaded on the traversing truck 6, and FIG. 4 is an explanatory diagram of the apparatus of the present invention for explaining the flow of FIG. 3.

The operation of the device of the present invention will be explained with reference to these figures. The sand-containing sewage sucked up by the pump 3 shown in FIGS. 1 and 2 is supplied to the sandbox tank 71 constituting the separator 7, and is strongly ground by a mechanical sandbox 72 to remove sand particles. Separates from the sand mass, disperses, and becomes constantly floating. Next, a coarse mesh lattice 74 is provided in the upstream part of the fixed fine mesh screen 73 to prevent the large mesh from flowing down into the pump basin 75 for pump suction. An inclined chute 76 is provided on the back side of the fine screen 73 at an angle that allows sand to easily fall downward, preventing sand from accumulating on the back side of the screen 73, and preventing separation of sewage containing pillow sand and accumulation of dispersed water. Be sure to shoot to the inlet of the conduit 77 having a cross-sectional area. The sewage discharged from the pump 78 is fed to the cyclone 79, and from the underflow, sand particles with high water content 80, fine dust, organic matter, sludge, etc. are transferred as an overflow 81 of the cyclone 79 to the sand pond 1 in FIG. ，
Let the aqueous humor flow to 2. The garbage blocked by the fine screen 73 is supplied to the garbage pack 10 by a manual or mechanical scraper, and the sand is supplied to the sand pack 9. The garbage pack 10 and the sand pack 9 are each independent, and are attached to the pack cart 8 with a fixing device.
to be loaded. As mentioned above, by installing a sand separator on a traversing truck on a traveling girder and using a pump type sand transporter to feed it, it is possible to absorb sand from any location in terms of environmental hygiene. No separate dilution water or the like is required for processing. In addition, with conventional V-bucket conveyors, operation becomes impossible due to the difference in height of the secondary sand accumulation surface at the bottom of the pond.
During horizontal scraping, there were disadvantages such as a decrease in the carrying out efficiency due to passing through the peaks and troughs of the sand surface, but according to the present invention, the above disadvantages are resolved. Furthermore, the operation is simple and maintenance is simple, and since the number of driving machines can be reduced, the number of various detectors can also be reduced, and therefore the operation sequence can be simplified and the amount of power used can be reduced.

[Brief explanation of the drawing]

1 and 2 are a plan view and a front view, respectively, showing an embodiment of the present invention, FIG. 3 is a diagram showing the flow of the constituent parts of the apparatus of the present invention, and FIG. 4 is an explanatory diagram of the same apparatus. 3: pump, 5: traveling girder, 6: traversing truck, 7: sand separator, 8: pack truck, 9, 10: pack, 11: ramp. 2 figures of soup 3 figures of soup 4 figures

Claims (1)

[Claims] 1. In an apparatus in which a traveling trolley is provided across a sand settling basin, a traveling trolley is provided on the traveling trolley, a sand and garbage separator is loaded thereon, a pump 3 is suspended to suck up the settled sand, and the sand is separated by the separator, The separator is equipped with a mechanical agitation tank, a screen, a pump 78, and a cyclone connected in sequence, and a scraper is installed on the screen to store the garbage in a garbage pack.
This sand separation device for sewage sedimentation is characterized in that the discharged sewage is fed to a cyclone, the sand content is stored in a sand pack, and the garbage pack and sand pack are installed in a pack truck that can run on a traversing truck.