JPH1118755A - Connected fermentation metal tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a problem that in the conventional fermentation tanks for purifying waste water, the temperature of the waste water does not rise at portions brought into contact with the tanks to cause the insufficient fermentation of the waste water, and require works for raking out substances adhered to the walls and bottoms of the tanks after the discharge of the fermented contents, because the conventional fermentation tanks are made of concrete or concrete blocks which are low in heat conductivity. SOLUTION: This connected fermentation metal tank comprises unit fermentation metal tanks used for receiving and fermenting water and a fermentation material. Therein, steel plate frames excellent in thermal conductivity effect are used for the fermentation tanks. Thereby, the fermentation advances uniformly in the whole inner portion of the tank. Spaces between the tank and the rotors of stirrers can be narrowed due to the improvement in the construction accuracy of the tank. A work for raking out an adhered layer is not required, because the adhered layer is not left after the discharge of fermented products. The connection of the unit steel frame fermentation tanks enables to assemble the fermentation tank having a required volume and achieve the purposes of fermentation and purification treatments.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fermenter for brewery waste liquid or water treatment and sludge treatment.

[0002]

2. Description of the Related Art Conventionally, most fermenters are made of concrete or block, usually starting from a foundation work and requiring a work period of at least 30 days. In order to set a heavy mobile stirrer, it takes about 30 days to cure concrete. A total of about 60 days is definitely required, and a long construction period is required. In addition, various expenses are required due to the extension of the construction period, which is usually expensive.

[0003] It is difficult to improve the construction accuracy of concrete or block fermenters, and the rotor of the stirrer, which is always operating during the fermentation period, the bottom of the tank, and the sides and walls of the stirrer. In between, it is necessary to increase the interval to avoid contact. Therefore, the rotor of the stirrer did not reach, the part where the fermented material could not be stirred remained thick, the temperature could not be controlled, and the unfermented part that stuck thickly after discharging the fermented contents remained. There is.

[0004]

As described above, the conventional fermentation tank for brewing waste liquid is a fermentation tank in which the waste liquid and the fermentation material are stored in a concrete or block tank and stirred at a constant temperature by fermentation heat. The construction cost was high, the construction period was long, and the construction of the waste liquid fermentation treatment equipment required a great deal of time and construction costs.

[0005] If the method of the present invention is used, it would take about 60 days to construct one fermenter according to the present invention, which would have conventionally required about 60 days for the installation of one 20-ton brewery waste liquid processing capacity. It takes only 10 days to complete the construction, and the fermenter can be started immediately after installation to exhibit the processing function.

[0006]

SUMMARY OF THE INVENTION In order to solve this problem, according to the present invention, a metal unit fermenter with a high processing accuracy is prepared in advance and connected to a number satisfying the required storage capacity. In the construction method, the wall surface of the above-mentioned concrete defects, processing accuracy of the bottom surface and the accompanying scraping work,
This was to solve the problems of construction period and construction cost.

The fermenter is made of metal, and one unit is a box of 9 rippo meters and is manufactured and prepared in advance with zinc-plated steel plates of 4 to 5 mm in thickness. The design is such that a structural frame for reinforcement is added to sufficiently withstand the weight and vibration of an approximately 2 ton agitator moving on the tank. Due to metal processing, it is easy to keep the accuracy of the wall and bottom within a maximum of 5 mm or less, and the distance between the agitator rotor and the bottom is reduced to a fraction of that of conventional fermenters. Leaves almost no unstirred layer of fermented material.

[0008] The fermenter made of metal has a constant temperature of the contents due to the excellent thermal conductivity of the tank body, so that a uniform fermentation action can be expected in the entire tank as compared with a fermenter made of concrete. .

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described with reference to FIG. The connection type fermenter is a 4-5mm thick galvanized iron plate with a width of 3m, height of 1.5m, and a length of 2m. The two connecting surfaces of the tank are sandwiched with a sealing material 14 therebetween and fastened with six bolts on one side, and the connecting surface on the bottom surface of the tank is brought into close contact with rubber or a similar sealing material 14 to be placed on a base material.
A rail 5 through which a stirrer 7 reciprocates is attached to the upper edge of the tank. A single fermentation tank is connected to assemble a long fermentation tank. The tanks located at both ends of the connection tank are provided with a metal door 9 which can be opened and closed to seal the contents during the fermentation period.

[0010] Four air blow pipes 13 are incorporated in the bottom of the tank, and are connected to adjacent tanks through air blow pipe through holes 17 previously opened in the rubber seal 14 when the single fermentation tank is connected. Air blow spout 1 on the bottom of each fermenter
5 open three.

The present fermenter is a fermenter having a required capacity by connecting a required number of single units from a small-scale fermenter to a large-scale fermenter according to the installed capacity.

[0012]

Embodiment 1 The structure of the present invention will be described with reference to FIGS. 1, 2 and 3. FIG. Fermenters made of iron plate, 3 meters wide, 1.5 meters high, and 4 meters long, are reinforced with steel beams between the upper and lower edges 2 and 3 on the left and right side walls 1 of each unit fermenter. 4 is welded, and the upper edge 2 serves to reinforce the upper end of the side wall 1 and weld the rail 5 by laying an L angle.
A bottom girder 8 supporting the total weight of the fermenter contents, the tank and the stirrer 7 is welded to the outer wall surface of the fermenter bottom 6. The joint surface between the unit fermenters also serves as the reinforcing beam 4 with an L angle, and is joined by bolting with the sealing material 14 interposed therebetween. The tanks located at both ends of the unit tank are provided with double-opening iron doors 9 and connected to the reinforcing beams 4 by hinges 10. The discharge and cleaning of the contents are open and normally closed by the lock device 11 in a watertight manner. ing.

The stirrer 7 is provided with a rotor 12 which moves back and forth on the stirrer rail 5 by driving wheels 16 and stirs the contents of the fermentation tank below the stirrer 7. It is driven to rotate by an electric motor provided at the top of the machine 7. The bottom surface 6 and the side wall 1 of the iron fermentation tank according to the present invention are machined with an accuracy of a millimeter unit, and the distance between the rotor 12, the bottom surface 6 and the side surface 1 of the iron fermentation tank is narrower to a few centimeters as compared with the concrete tank. This eliminates the necessity of a separate stirring operation for unfermented material due to unstirring remaining on the bottom and side surfaces, which was conventionally performed, and a stirring machine until the fermentation is completed.
The fermentation of the tank can be controlled and the temperature can be controlled only by the automatic stirring operation.

[0014]

According to the combined fermenter of the present invention, there are the following advantages. In the case of concrete or block fermenters, the fermentation of the part facing the outer wall is insufficient, whereas in the case of iron plate, the fermentation heat is generally transmitted more quickly than the outer wall. A higher temperature of about 8 to 10 degrees than that of the concrete or block,
Moreover, the fermentation proceeded smoothly in general, and the fermentation objective was sufficiently achieved in a short period of time.

When the rice bran 2, sawdust 6, and coffee grounds 2 which are currently used as a fermentation material are mixed in a fermentation tank and fermentation is started by the conventional method, the conventional method is used.
In a fermenter made of a centimeter-thick concrete, it took about 18 to 20 hours for the outer wall thickness to reach 70 ° C. due to an obstacle to a rise in temperature, whereas in a fermenter made of iron plate, it took 8 to 12 hours. The temperature reached 70 degrees, and a large change in the rise in temperature appeared.

In addition, the construction period of the tank itself can be shortened. Stirring in the gap between the inside of the tank and the stirrer does not accumulate the remaining unfermented material, enabling continuous automatic operation.There is no interruption in the stirrer operation for the remaining stirrer in the gap and the temperature inside the tank. It is easy to manage, the work is simpler than conventional fermenters, and the tank management is excellent.

[Brief description of the drawings]

FIG. 1 is a side view of a connected fermenter according to the present invention.

FIG. 2 is a plan view of the combined fermenter of the present invention.

FIG. 3 is a sectional view of the combined fermenter according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side wall 2 Upper edge 3 Lower edge 4 Reinforcement beam 5 Stirrer rail 6 Tank bottom 7 Stirrer 8 Bottom girder 9 Iron door 10 Hinge 11 Locking device 12 Rotor 13 Air blow pipe 14 Seal 15 Air blow spout 16 Drive Ring 17 Air blow pipe penetration

Claims (2)

[Claims] 1. A combined fermenter made of metal, comprising a unit fermenter made of metal, for storing waste liquid and fermentation material for fermentation treatment. 2. A connected fermenter made of metal, wherein a unit fermenter is connected to obtain a required capacity.