JPS5818149B2 - Cleaning equipment for screen residue, dirt, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for continuously cleaning screen sludge captured by screens installed in sewage treatment plants, pumping stations, etc., and sludge settled in sewage settling basins. It is.

That is, the present invention provides a cleaning treatment tank for screen residue, sewage, etc., whose inclination can be changed and whose tilt can cut off a portion of the water stored in the tank, causing a drought condition; Screen residue from this cleaning treatment tank.

A screen installed in advance to remove bulky waste at the input port for waste sand, etc., a transfer means for transferring the screen residue, waste sand, etc. to be introduced into the treatment tank, and a screen installed in advance to remove coarse garbage at the input port for waste sand, etc.; The present invention is characterized by a cleaning treatment device for screen residue, waste sand, etc., which is equipped with a washing nozzle that injects high-pressure fluid directly onto the screen residue, waste sand, etc. in a state, and crushes and washes fragile organic matter.

Generally, garbage contained in sewage at a sewage treatment plant or pumping station is removed using a screen, and the screen residue is transported to a treatment facility such as a dumping site, where it is appropriately treated.

However, this removed screen residue contains a lot of sludge-like substances, human excrement, and other soil-soluble organic matter, and has a very high moisture content.

The same applies to scum collected in sedimentation ponds.

Therefore, when transporting such screen residue, scum, etc. to a treatment plant, the sewage drips during transportation and generates a bad odor, which is unsanitary. It also leaks into groundwater and rivers, causing pollution.

In addition, when incineration is performed, it is difficult to incinerate because of the high moisture content, and the incineration cost is high.

Furthermore, there are many drawbacks, such as the fact that it is difficult to find a dumping site for screen residue or scum near a city due to its foul odor.

The present invention has been made in view of this.

The present invention will be explained below based on examples.

The screen sludge removed by the screens of pumping stations, sewage treatment plants, etc., the scum collected from the sedimentation pond, and the scum settled in the sewage sedimentation basin (hereinafter abbreviated as screen sludge, etc.) are conveyed through a conveyor 1 such as a conveyor. The water is transported to the cleaning treatment tank 2 through the cleaning treatment tank 2.

Before putting this screen residue etc. into the cleaning treatment tank 2,
Before setting up a screen, remove bulky waste beforehand.

This delivery may be carried out intermittently or continuously depending on the processing capacity of the washing tank.

This cleaning treatment tank 2 is supported by a shaft 9 and can be raised or raised about this shaft, so that the inclination of the tank can be changed.

In addition, a screw conveyor, a chain conveyor with a scraper plate, and a screw conveyor are used as transfer means 3 that can transfer the screen residue, etc. in the tank from one end to the other in order to transfer the screen residue, etc. carried into the tank while washing it. establish.

This cleaning treatment tank 2 has a required length to allow the cleaning to be retained for the necessary time, and as shown in the figure, the discharge side of the screen residue etc. after cleaning is raised, so that the inside of the treatment tank is The water has run out in the middle of the tank, creating a drought situation.

Since the washing water is of a closed type with a slope so that it drains on the lower side, it has a deodorizing effect.

The transfer means 3 is driven by a drive device 4 installed at the top of the tank or at an appropriate position.

In addition, a cleaning nozzle 5 is installed above the transfer means 3 of the cleaning treatment tank, and the cleaning water or high-pressure fluid such as air is directly applied to the screen sludge transferred in the tank from the nozzles 5, 5... Spray it to cleanse it.

In particular, as mentioned above, there is a drought situation at the rear of the tank,
The cleaning performed here means that cleaning is performed at a much higher level than when the nozzle is washed underwater.

This injection of high-pressure cleaning fluid is carried out at a required pressure, and the cleaning nozzle 5 is guided from outside the tank and is connected to a cleaning height and pressure fluid supply pipe 6 that is piped over almost the entire length or part of the tank at a required pitch. A large number of holes were drilled.

This high-pressure jetting fluid then crushes fragile organic matter.

The cleaning tank configured as described above is installed on the line that carries out the screen residue scraped up by a dust remover, etc. at a sewage treatment plant, etc., and the bulky waste is preliminarily removed from the screen 7 by a belt conveyor or the like. After being removed, the screen residue, etc. placed in the lower part of the cleaning tank is transferred through the cleaning tank, which is tilted to the front end by the rotation of the screw blade attached to the shaft of the transfer means 3, and is simultaneously transferred to the cleaning tank. They are crushed, agitated and washed by high pressure fluid sprayed from a nozzle attached to a high pressure cleaning fluid supply pipe provided inside, and are transferred to the discharge side of the tank while draining using the slope of the tank.

Since the screen sludge is surrounded by the screw blades, it is prevented from being splashed by high-pressure water and is washed reliably. Also, because the screen sludge is forcibly transferred by the screw blades, there is no short path for the screen sludge, and there is no stagnation required for cleaning. Continuous processing is possible without uneven washing because the accumulation time is ensured.

The screen sludge, etc. after washing from the upper part, which was washed while being transferred by the screw blade, and the screen sludge, etc. discharged from the lower part after the washing water was discharged separately, are further solidified by a drum screen installed at the detection port. It performs liquid separation.

According to the present invention, while the screen residue, etc. is transferred inside the closed cleaning treatment tank, high-pressure cleaning fluid is injected at high pressure from above or from the side, and is sprayed directly onto the screen residue, etc., which causes a foul odor to be removed from the screen. When washing and crushing residue, etc., there is an advantage that no foul odor is released outside the tank, and the residue can be treated continuously and reliably without scattering to the surroundings.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view schematically showing the apparatus of the present invention. Figure 2 is the same side view. 1...Transportation means, 2...Washing treatment tank,
3... Transfer means, 4... Drive device, 5
...Washing nozzle, 6...Washing water supply pipe, 7...Screen for removing coarse dirt, 8...
...Solid-liquid separation means.

Claims (1)

[Scope of Claims] 1. A cleaning treatment tank for dripping screen residue, sewage, etc. whose inclination can be changed, and the inclination can cut off part of the water stored in the tank and cause a drought condition; A screen is provided in advance to remove coarse garbage at the input port for screen residue, dirty sand, etc. of the cleaning treatment tank, and a transfer means for transferring the screen residue, dirty sand, etc. to be input into the treatment tank. ,
During this transfer, high-pressure fluid is injected directly onto screen residue, sludge, etc. that are underwater or in a dry state, crushing fragile organic matter. A cleaning treatment device for screen residue, dirt, etc., which is equipped with a cleaning nozzle for cleaning.