JPS6127120B2 - - Google Patents

Description

Detailed Description of the Invention The present invention relates to a method for treating sludge such as sludge, and its purpose is to dredge sludge and transport it to a predetermined location by a carrier ship. It is an object of the present invention to provide a sludge treatment method that allows easy transport and hardening of sludge.

The drawing shows an example of a device for carrying out the method of the present invention. In this figure, 1 is a cumulative metering and stirring device, and this metering and stirring device includes a metering signal transmitter 2 and a measuring and stirring device placed on the transmitter. A tank 3, a stirring blade 4 provided in the tank, a convection blade 5 provided on the inner circumferential wall of the tank 3, a variable speed motor 6 for rotating the stirring blade 4, and water, gypsum, and solidification retardant in the tank 3. It consists of a device (not shown) for injecting or throwing in agents, etc. In addition, 7 is a mixer, 8 is a stirring blade provided in this mixer, 9 is a cement measuring device, 10, 11
is a pump, 12 is a spreading device, 13 is a clam cell,
14 is a sludge carrier.

To carry out the method of the present invention with the apparatus shown in this drawing, water A is injected into the tank using the water injector while rotating the stirring blade 4 in the metering/stirring tank 3 of the cumulative metering and stirring device 1 with the oil motor 6. When this water reaches a predetermined amount, the weighing signal transmitter 2 is actuated by the weight, and the transmitted signal causes the water injection device to stop pouring water, and while the stirring blades 4 continue to rotate, gypsum B is poured from the feeder. Pour into tank 3. In this way, when the gypsum B is put into the predetermined amount tank 3, its weight causes the weighing signal transmitter 2 to be activated again, and the transmitted signal stops the gypsum from being put in from the gypsum feeder and delays solidification. The agent C is introduced into the tank 3 from the injector, and the rotation of the stirring blade 4 is further continued. In this manner, when the amount of the coagulation retarder etc. reaches a predetermined amount, the weighing signal transmitter 2 is actuated three times according to the weight, and the injection of the coagulation retarder into the tank 3 is stopped by the transmitted signal. When a predetermined amount of the removed gypsum solution has accumulated in the tank 3 in this way, the removed gypsum solution is introduced into the mixer 7 by the pump 10, and a predetermined amount of cement is poured into the mixer from the cement measuring device 9. The removed gypsum solution and cement are stirred and mixed by the rotation of the stirring blades 8, and sent to the spreader 12 by the pump 11, and the spreader spreads the mixture over the entire upper surface of the sludge 15 loaded into the carrier ship 14 as shown at 16. After spreading the sludge uniformly, the clam cell 13 picks up the sludge 15, the hardening agent made of removed gypsum and cement, and shakes it off. By repeating this picking up and shaking off, the removed gypsum is removed. A curing agent made of cement and sludge are uniformly mixed, and before the sludge has hardened, it is sent to a disposal site by a transport ship 14 and hardened.

The method of the present invention is extremely effective as a sludge treatment method because sludge such as sludge can be sent to a predetermined location and hardened by the simple operations described above.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an example of an apparatus for carrying out the method of the invention, and FIG. 2 is a detailed view of the cumulative metering stirring device of this apparatus. 1...Cumulative metering stirring device, 7...Mixer, 1
4...Carrier, 13...Cram cell.

Claims (1)

[Claims] 1. A predetermined amount of water is poured into a cumulative metering and stirring device that is placed on a metering signal transmitter and includes a metering and stirring tank having a rotatable stirring blade inside, while being measured via the metering signal transmitter. , a step of sequentially adding gypsum, a set retardant, etc. and stirring with the stirring blade to generate a removed gypsum solution, and introducing this removed gypsum solution into a mixer together with a predetermined amount of cement that has been added. A step of stirring and mixing, a step of uniformly spreading the stirred and mixed mixture in this step onto the sludge loaded in the carrier ship via a spreader, and then a step of spreading the mixture mixed by stirring in this step onto the sludge loaded in the carrier ship, A sludge treatment method comprising the steps of mixing the sludge and a mixture as a hardening agent to an extent that the mixture does not harden, transporting the sludge to a predetermined location, and hardening the sludge at the location.