JP3248858B2 - Kitchen wastewater treatment agent supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for automatically purifying wastewater from kitchens, particularly wastewater generated from relatively large-scale commercial kitchens such as food factories, hotels and restaurants. To a device for supplying to

[0002]

2. Description of the Related Art Sewage discarded from kitchens to sewerage prevents clogging of sewer pipes, generation of explosive gas such as methane, generation of foul odors, etc., and furthermore, purification of activated sludge in sewage treatment plants. It is necessary to remove liquid fats and oils contained in the sewage, scum, sludge-like solid fats and oils, food residues and the like contained in the sewage in advance so as not to impair the water quality.

[0003] For this reason, conventionally, the chamber drainage is generally introduced into a grease strap through a drainage groove provided on the kitchen floor,
In this grease trap, a method is adopted in which the oil and fat components and food residues contained in the wastewater are separated and removed and then discharged to the sewer.However, since there are many oil and fat components collected in the grease trap, particularly solid oil and fat components, A great deal of labor and time is required for the separation and removal, the work efficiency is low, the processing cost is high, and the solidified oil and fat component adheres to the wall surface in the drainage groove, thus hindering the flow.

[0004] The applicant of the present invention has previously described Japanese Patent Application Laid-Open No. 9-10 / 1990.
No. 757, a quantitative supply device for supplying sewage treatment agent is installed at the most upstream position of the kitchen floor drain, and a grease strap is installed at the most downstream position, and powdery sewage is discharged from the quantitative supply device into the kitchen floor drain. A kitchen floor wastewater purifying apparatus has been proposed in which a treating agent or a liquid obtained by mixing the treating agent with water is intermittently supplied. The sewage treatment agent used here is a powdered enzyme / biological preparation in which several kinds of enzymes and certain bacteria are concentrated and immobilized, and when added to sewage containing oils and fats, the enzymes and bacteria It is known that it has the function of decomposing and consuming fats and oils and thereby reducing the fats and oils components in wastewater. Therefore, by adding this sewage treatment agent to the kitchen wastewater from the above quantitative supply device, the fat and oil component is decomposed and removed or reduced in the wastewater system, thereby generating a solid fat and oil component in the grease trap and the drainage gutter. Can be prevented or suppressed.

In such a kitchen floor drainage purification apparatus, the method of discharging a sewage treatment agent into a drain as a mixed liquid with water, compared with the method of discharging the wastewater as a powder, as compared with a method of discharging the wastewater as a powder, leaves the kitchen wastewater containing enzymes and enzymes. Since the bacteria are easily distributed evenly, the effective utilization rate of the sewage treatment agent is increased. In this case, the powdered sewage treatment agent is stored in the storage tank of the fixed amount supply device, and the metering and discharging mechanism of the measurement supply unit facing the lower opening of the storage tank and the water supply device are intermittently synchronized with each other. When activated, the measured sewage treatment agent and water are brought into contact with each other in a mixing chamber disposed below the metering supply section, so that the mixed liquid is discharged to the drain.

[0006]

However, in the purifying apparatus according to the above-mentioned prior proposal, a sufficient effect cannot be obtained as expected in practical use, and further research has been conducted to investigate the cause. As a result, the following items were found. That is, the bacteria in the sewage treatment agent are in a dormant state in the form of a powdery preparation, and therefore, even when the method of discharging the sewage treatment agent into a drain as a mixed solution with water as described above is used, the kitchen wastewater is discharged. It takes a long time to be fully activated after being added to the inside, it becomes a prey for other various microorganisms living in the drainage system of the kitchen, and it is easy to reduce the number, and finally it is activated to decompose and consume oil and fat components. At the stage of thriving proliferation, the water often flows into the sewer pipe together with the drainage, and the original treatment capacity could not be fully exhibited in the kitchen drainage system.

[0007] Therefore, in the proposed purifying apparatus, in order to sufficiently reduce oil and fat components in the kitchen wastewater in the drainage system and to surely suppress the generation of solid oil and fat components in the grease trap and the drain, it is necessary to treat sewage. It is necessary to increase the supply amount of the agent at one time and to supply the agent frequently, so that the consumption amount of the expensive sewage treatment agent increases and the treatment cost increases.

In view of the above-mentioned circumstances, the present invention provides a kitchen wastewater treatment agent supply device using an oil and fat decomposable wastewater treatment agent, even if the consumption amount and supply frequency of the wastewater treatment agent per one time are small. It is an object of the present invention to provide an oil and fat component in kitchen wastewater which can be decomposed and consumed at a high efficiency to remarkably reduce the amount thereof, thereby greatly reducing the cost of purification treatment of kitchen wastewater.

[0009]

In order to achieve the above object, a kitchen wastewater treatment agent supply apparatus according to a first aspect of the present invention stores a powdery wastewater treatment agent containing a fat-decomposing enzyme and bacteria. A storage tank, a measuring and feeding device which faces a lower opening of the storage tank and measures and discharges a predetermined amount of the sewage treatment agent, and a sewage discharged from the measuring and feeding device which is disposed below the measuring and feeding device. A liquid storage tank for storing a liquid mixture of a treating agent and water, a water supply device for supplying water to the liquid storage tank, and switching between flowing out and stopping the mixed liquid from the liquid storage tank to the kitchen drainage system and switching means, Ri Tsukasa the switching operation of the intermittent motion and said switching means of said metering device and the water supply device, these operating, the畜液Tan
Of the mixed liquid in the tank and the mixed liquid held for a predetermined time
And a control device for controlling the outflow of water.

In the treatment agent supply device having the above-described structure, a predetermined amount of the sewage treatment agent discharged from the metering supply device is mixed with the water supplied from the water supply device, and the mixture stops flowing out of the switching means. After the state is maintained in the liquid storage tank for a certain period of time and the bacteria in the sewage treatment agent are sufficiently activated, the switching means can be supplied to the kitchen drainage system in a flowable state. Therefore, immediately after the mixture is added to the kitchen wastewater, the bacteria of the sewage treatment agent actively decomposes and consumes the fat and oil component to rapidly proliferate, thereby significantly improving the efficiency of removing the fat and oil component.

In the second aspect of the present invention, in the apparatus for supplying a treatment agent for kitchen drainage according to the first aspect of the present invention, the liquid storage tank is provided with a mixing liquid stirring means. In addition, the components of the sewage treatment agent are uniformly dispersed in the liquid, and the bacteria of the sewage treatment agent are activated more quickly.

According to a third aspect of the present invention, in the kitchen wastewater treatment agent supply apparatus according to the second aspect, the stirring means of the liquid storage tank is fitted to the liquid outlet of the liquid storage tank and mixed by rotation. It consists of a propeller having a function of sending the liquid back from the liquid outlet, and this propeller stops the outflow of the mixed liquid from the liquid outlet at the time of rotation driving and enables the outflow of the mixed liquid from the liquid outlet at the time of rotation stop, The switching means is also used. Therefore, it is not necessary to provide an on-off valve such as a solenoid valve which is usually used as the switching means, and the configuration of the apparatus is greatly simplified.

According to a fourth aspect of the present invention, in the kitchen wastewater treatment agent supply apparatus according to any one of the first to third aspects, the liquid level in the storage tank is regulated to a certain level or less. An overflow port is provided. Therefore, even if water exceeding an allowable amount flows into the liquid storage tank due to an erroneous operation, device abnormality, or the like, the liquid level is kept constant by outflow from the overflow port.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a kitchen wastewater treatment agent supply apparatus according to the present invention will be specifically described with reference to the drawings.

FIG. 1 is a plan view conceptually showing the entire kitchen. (1) is a kitchen, in the center of which there are a plurality of counters (2a), around which are a sink (2b) and a dishwasher (2).
c), tableware storage shelves (2e), etc. are arranged.

(3) is a main drainage ditch provided on the floor (1a) of the kitchen (1), which is inclined from one side to the other in the kitchen (1), and controls sewage flowing from a sewage generation source. Direct inflow or once outflow to the floor (1a) surface, then inflow and downstream. (3a) is a tributary drain that merges with the main drain (3), on which the cooking table (2a) is installed. The drains (3) and (3b) are usually covered with a grating except during cleaning.

(4) a treatment agent supply device installed above the floor (1a) near the uppermost stream of the drainage ditch (3), which supplies a powdery sewage treatment agent containing fat-decomposing enzymes and bacteria. It has the function of intermittently discharging water into the drain (3) in a state of being mixed with water.

(5) a grease trap for separating a liquid or solid fat component contained in sewage;
It is installed at the most downstream position of the drain (3). (6) is a miscellaneous drainage tank, which temporarily collects sewage flowing out of the grease trap (5) before discarding the sewage pipe (7), thereby separating down sediment in the sewage. ing.

FIG. 2 is a vertical sectional front view showing the internal structure of the processing agent supply device (4), FIG. 3 is a vertical sectional side view thereof, and FIG. In these figures, reference numeral (10) denotes a supply device main body housed in a housing (11), and a hopper-like storage tank (12) for storing a powdery sewage treatment agent (P) and a lower end opening (12a). ) And a discharge chamber (14) connected below the metering device (13). At the bottom of the housing (11), a skirt-shaped outlet (14a) formed at the lower part of the discharge chamber (14) is provided.
And a discharge line (16) communicating with the liquid outlet (15a).

The storage tank (12) is provided with a leveler (17) for detecting an insufficient storage amount of the powdery sewage treatment agent (P). The leveler (17) includes a vertically rotatable rod-like body (17a) pivotally supported at its base end by a lid plate (18) fitted into the upper end opening (12b) of the storage tank (12). A magnetic sensor (17b) attached to the outside of the side wall of the tank (12) and detecting the magnetic force of a magnet (19) fixed to the free end of the rod-like body (17a). And the rod (17
a) When the free end is placed on the sewage treatment agent (P), the free end rotates downward with the decrease in the storage amount due to the consumption of the sewage treatment agent (P), and finally the free end When a contact is made with the inner surface of the side wall of the storage tank (12) as shown by the imaginary line in FIG. 2, a signal is output from the magnetic sensor (17b). The warning lamp (20a) of the control unit (20) lights up,
Notifies the storage capacity of the sewage treatment agent (P).

The metering device (13) is a storage tank (12)
It comprises a rotary powder discharging and measuring drum (21) arranged to prevent the sewage treatment agent (P) from falling inside. The powder discharging and measuring drum (21) has a concave measuring pocket (21a) on the peripheral surface, and a gear (13b) fixed to one end of a horizontal support shaft (13a) includes a motor (22). ) Is engaged with the drive gear (22a), and when rotated by the drive of the motor (22), the sewage treatment that enters the measuring pocket (21a) due to the sliding contact between its peripheral surface and the peripheral contact wall (23). The agent (P) is cut and weighed, and then the weighing pocket (21)
When a) comes down, the sewage treatment agent (P) naturally falls from the measuring pocket (21a) into the discharge chamber (14).

The motor (21) operates intermittently, and is set so as to rotate the powder discharging and measuring drum (19) by an integer during operation. The supply amount of the processing agent (P) is determined.

In the storage tank (12), a rotary stirring blade (23) is arranged above the lower end opening (12a). The stirring blade (23) has a strip shape fixed to a horizontal support shaft (23a) at an intermediate portion in a longitudinal direction, and a gear (23b) fixed to one end side of the horizontal support shaft (23a) has a motor (22). ) Is engaged with the drive gear (22a), and driven by the motor (22), the powder discharge and measurement drum (21) of the measurement and supply device (13)
It is designed to rotate in the opposite direction in synchronization with.

The discharge chamber (14) has, on a side wall, an inlet (14b) for water supplied from a water supply device (24) installed at the lower side of the supply device body (10). . When the powder discharge metering drum (21) rotates, the water supply device (24) opens the solenoid valve (24a) in synchronization with the rotation of the powder discharge metering drum (21), and connects the water introduced from the introduction hose (25b). The water is fed to the water intake (14a) via the hose (25a). Therefore, a certain amount of the sewage treatment agent (P) and water are simultaneously discharged into the discharge chamber (14), and both are discharged from the discharge port (14).
From a), the mixture enters the liquid storage tank (15) and becomes a mixed liquid (L).

The liquid storage tank (15) is inclined so that the bottom surface thereof becomes lower toward the liquid outlet (15a) having a vertical tubular shape.
A propeller (27) rotatably driven by a motor (26) is fitted concentrically to the liquid outlet (15a). The propeller (27) functions to send the liquid mixture (L) upward by rotation, and during this rotation, the liquid outlet (15)
Since the mixed liquid (L) which is going to flow into a) is sent back, the mixed liquid (L) is agitated in the liquid storage tank (15), and is discharged from the liquid outlet (15a) to the discharge line (16). While the mixture (L) is prevented from flowing out to the propeller (27).
Is stopped, the mixed liquid (L) flows out from the liquid outlet (15a) to the discharge pipe (16).

The discharge pipe (16) has a horizontal pipe (16a) facing the liquid outlet (15a) and a vertical pipe (16) having upper and lower ends open.
b), and the mixed liquid (L) is supplied to the vertical tube (16).
The water is discharged into the drain (3) directly from the lower end of b) or through a suitable pipe connected to the lower end. The upper end of the vertical pipe portion (16b) opens into the liquid storage tank (15) to form an overflow port (15b) for regulating the liquid level of the mixed liquid (L) to a certain height or less. I have. (28) is a plug for closing the open end of the horizontal tube (16a). In addition, (11a) and (11b) shown by virtual lines in FIG. 4 are a water guiding hole and a wiring hole formed in the bottom wall of the housing (11).

The control unit (20) has a built-in microcomputer and sets and supplies in advance the amount of supply of the sewage treatment agent (P) and water and the supply time interval of the mixture (L). By doing so, the motors (22) and (26) and the water supply device (2
The operation timing and duration of each of the solenoid valves (24a) of 4) are automatically controlled. The operation of the motor (22) and the opening of the solenoid valve (24a) are closed during the operation of the motor (26), that is, the liquid outlet (15a) of the storage tank (15) is closed by the rotation of the propeller (27). It is set in advance to be performed while in the state.

As the powdery sewage treatment agent (P) stored in the storage tank (12), so-called enzyme / biological preparations conventionally used for the treatment of sewage containing oils and fat components which are easily solidified can be used. . This formulation is a hygroscopic and biodegradable powder that concentrates and immobilizes several kinds of enzymes and certain human harmless bacteria, decomposes oil and fat components in sewage, and decomposes the protein and sugar. It also has the function of digesting and decomposing quality, and also has the effect of preventing the generation of gas and odor. In addition, as a commercially available product of such a sewage treatment agent (P), for example, a liquid water-soluble agent such as “Prolivac G (manufactured by HEBECO)” may be used.

FIG. 5 is a longitudinal sectional view showing the grease strap (5). (5a) is a strainer that receives sewage flowing from the drain (3) and filters food residues and other contaminants contained in the sewage, (5b) is a weir plate that dams floating oil and fat components, and (5c) is A partition plate for preventing settling sediment from flowing out, and (5d) is a trap tube provided with a drain port (5e) for defining a water level in a body portion.

In the kitchen (1), sewage generated from a cooking table (2a), a sink (2b), a dishwasher (2c), etc.
The fats and oils component, small pieces of food residue, sewage, etc. contained in the sewage flow directly into the drain (3), or once on the floor (1).
a) It flows down to the surface and flows into the drain groove (3), flows downstream through the drain groove (3), and enters the grease trap (5).
Therefore, it is necessary to keep the floor (1a) surface always clean by removing dirt with a large amount of cleaning water, and this cleaning water also adds to the drainage. Therefore, according to the amount of the wastewater, the amount of the sewage treatment agent (P) supplied from the treatment agent supply device (4) to the drainage ditch (3) per one time is, for example, several times to over ten times per day. The supply frequency is set, and this is input to the control unit (20).

When the motor (22) operates, the powder discharging and measuring drum (21) and the stirring blade (23) rotate, and at the same time, the solenoid valve (24a) of the water supply device (24) is opened. Then, the sewage treatment agent (P) in the storage tank (12) enters the measuring pocket (21a) every time one rotation of the powder discharge measuring drum (21) is measured and discharged to the discharging chamber (14). , This release chamber (1
The water is supplied to the liquid storage tank (15) together with the water flowing in from the water intake (14b) of (4). At this time, the propeller (27) disposed at the liquid outlet (15a) of the liquid storage tank (15)
Is rotated, the supplied sewage treatment agent (P) and water are stored in the liquid storage tank (15) as a mixed liquid (L).

The powdery sewage treatment agent (P) is placed above the powder discharge metering drum (21) by the rotation of the stirring blade (23).
Is agitated, the loosening action prevents clumping, facilitates the flow of the sewage treatment agent (P) into the measuring pocket (21a), performs accurate weighing, and further reduces the amount of water in the storage tank (12). Of the sewage treatment agent (P) at the time of the decrease in consumption is also made evenly. The water may be supplied only in an amount sufficient to dissolve the powdered sewage treatment agent (P) to be metered in. However, the powdered sewage treatment agent (P) may be provided on the inner wall surface of the discharge chamber (14). In order to avoid the adhesion and remaining, it is preferable to set so as to continue for a certain period of time after the motor (22) is stopped, that is, after the powder discharge metering drum (21) and the stirring blade (23) are stopped.

The storage time of the liquid mixture (L) in the liquid storage tank (15) is set so that the bacteria of the sewage treatment agent (P) are sufficiently activated.
The stirring action according to 7) continues, and the components of the sewage treatment agent (P) are maintained in a state of being uniformly dispersed in water. When the required storage time has elapsed, the motor (26) stops and the propeller (27) stops, so that the mixture (L) flows out from the liquid outlet (15a) and is supplied to the drain (3). Is done.

When the mixture is supplied to the kitchen wastewater in the drainage ditch (3), it flows down from the supply position to the grease trap (5), and is discharged by the enzymes and bacteria of the sewage treatment agent (P). The fat and oil components are decomposed and consumed, and proteins and carbohydrates are also digested and decomposed. In addition, the digestion and decomposition proceed continuously in the grease trap (5).

In this case, the bacteria in the mixture (L) are as follows:
Since it is sufficiently activated in the liquid storage tank (15) and is in a state of being uniformly dispersed in water, it immediately decomposes and consumes oil and fat components immediately after flowing into the drainage ditch (3), and rapidly multiplies. Since there is no concern that the number of microbial organisms living in the drainage system will be reduced by the prey of other miscellaneous microorganisms, the decomposition and consumption efficiency of the fat and oil components will be extremely high. Therefore, the amount of fats and oils in the wastewater is significantly reduced, and hardly any solidified fats and oils are generated in the grease trap (5), and the labor required for separating and removing the fats and oils and food residues is greatly reduced. . In addition, the oil and fat component adhering to the wall of the drain groove (3) is almost eliminated, and the flow of the drain water becomes smooth, and the generation of gas and odor in the drain groove (3) and the grease trap (5) is also prevented. .

On the other hand, in the processing agent supply device (4) from which the mixed liquid (L) has been released, the motor (26) is driven, the rotation of the propeller (27) is resumed, and the liquid storage tank (15).
The liquid outlet (15a) is closed, and the liquid storage tank (1
The following sewage treatment agent (P) and water are supplied to 5).
The mixed liquid (L) stored in the liquid storage tank (15) is
It is not always necessary to release the whole amount at once, and it may be set to release it in a plurality of times. In addition, the reception of the next sewage treatment agent (P) and water may be performed with a part remaining. It may be performed.

The sewage treatment agent (P) in the storage tank (12) is gradually reduced by the supply to the drain (3).
At a stage when the storage amount has decreased to some extent, the leveler (1
Since the warning lamp (20a) is turned on upon detection of (7), an appropriate amount of the sewage treatment agent (P) may be refilled into the storage tank (12) based on this. Also, even if water exceeding the allowable amount flows into the liquid storage tank (15) due to erroneous operation or device abnormality, etc., the liquid level of the mixed liquid (L) is kept constant by flowing out of the overflow port (15b). There is no concern that the peripheral equipment may get wet with the overflowing liquid mixture (L) and cause malfunction or failure, and the powdery sewage treatment agent (P) in the storage tank (12) may get wet and deteriorate or be supplied. There is no danger of becoming disabled.

In the above embodiment, the treatment agent supply device (4) is installed at the most upstream position of the drain groove (3). However, the treatment agent supply device (4) of the present invention has the Since L) can be supplied in a state where bacteria are sufficiently activated, a high removal rate of fats and oils components can be obtained even when the drainage gutter (3) is installed in the middle or downstream portion of the drainage gutter (3) or the grease trap (5). Can be achieved. Further, depending on the size of the kitchen (1) and the amount of generated wastewater, a plurality of processing agent supply devices (4) may be installed, or the mixture (L) may be supplied from one processing agent supply device (4) to the kitchen drainage system. A configuration for distributing and supplying to a plurality of locations can also be adopted.

On the other hand, in the above embodiment, the metering / supplying device (13)
The rotary drum system is adopted as the means for metering and supplying the sewage treatment agent (P) in the above, but various systems having a constant discharge function, such as a screw system, can also be adopted. Also,
In the above embodiment, the switching means for switching between the outflow and the stop of the mixed liquid (L) from the liquid storage tank (15) to the kitchen drainage system is the propeller (27), that is, the mixed liquid (L) in the liquid storage tank (15). However, in the processing agent supply device according to the first invention, the switching means, for example, an opening / closing valve such as an electromagnetic valve, is provided separately from the stirring means for the mixed liquid (L). May be provided.

Further, in the present invention, the stirring means and the leveler (17) for the powdery sewage treatment agent (P) in the storage tank (12) may be omitted, and the structure of the stirring means and the leveler ( 17) Structure and sensing method, based on this, notification method of insufficient storage of sewage treatment agent (P), operation mechanism of water supply device (24), shape of storage tank (12) and liquid storage tank (15), etc. The design of the detailed configuration can be variously changed in addition to the embodiment.

[0041]

According to the first aspect of the present invention, as a kitchen wastewater treatment agent supply device using an oil and fat decomposable wastewater treatment agent, a mixed liquid of a powdery wastewater treatment agent and water is stored in a storage tank. It can be stored and supplied to the kitchen drainage system with the bacteria of the sewage treatment agent fully activated, so even if the consumption and supply frequency of the sewage treatment agent at one time is small, the oil and fat components in the kitchen wastewater can be reduced. It is possible to provide a product which can be remarkably reduced by high-efficiency decomposition and consumption, thereby significantly reducing the cost of purifying kitchen wastewater and greatly reducing the labor required for separating and removing fats and oils with a grease trap.

According to the second aspect of the present invention, as the above kitchen wastewater treatment agent supply device, the mixed liquid is stirred during storage in the liquid storage tank, so that the wastewater treatment agent component can be uniformly dispersed in the liquid. At the same time, the activation of bacteria in the sewage treatment agent can be accelerated, so that the fats and oils components in the kitchen wastewater can be more efficiently decomposed and consumed, thereby increasing the removal rate.

According to the third aspect of the invention, in the above kitchen wastewater treatment agent supply device, the liquid storage tank agitating means switches the flow of the mixed liquid from the liquid outlet of the liquid storage tank. It is not necessary to provide an on-off valve such as a solenoid valve normally used as this switching means,
There is an advantage that the device configuration is greatly simplified and the manufacturing cost is reduced.

According to the fourth aspect of the present invention, in the above kitchen wastewater treatment agent supply device, the level of the mixed liquid in the liquid storage tank is regulated to a certain level or less by the overflow port. Even if water exceeding the permissible amount flows into the storage tank due to abnormalities, there is no concern that the peripheral equipment may get wet with the overflowing mixed liquid, leading to malfunction or failure, and the powdered wastewater treatment agent in the storage tank may get wet. There is no risk of deterioration or supply failure.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a kitchen provided with a kitchen wastewater treatment agent supply device according to the present invention.

FIG. 2 is a vertical sectional side view showing an embodiment of the treatment agent supply device.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a vertical side view illustrating a grease strap in the kitchen.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Kitchen 1a ... Floor 2a ... Cooking table 2b ... Sink 3 ... Drainage 4 ... Treatment agent supply apparatus 5 ... Grease strap 6 ... Miscellaneous drainage tank 7 ··· Sewer pipe 10 ··· Supply device body 11 ··· Housing 12 ··· Storage tank 12a ··· Lower end opening 13 ··· Metering and supply device 13a ··· Horizontal support shaft 14 ··· Release chamber 14b ··· Water inlet 15 ··· Liquid storage tank 15a ··· Liquid outlet 15b · · · Overflow port 16 ··· Discharge line 17 ··· Leveler 20 ··· Control unit (control device) 21 ... powder discharge measuring drum 21a ... measuring pocket 22 ... motor 23 ... stirring blade 24 ... water supply device 24a ... solenoid valve 26 ... motor 27 ... propeller ( Stirring means, switching means) P ... sewage treatment agent L ··· mixture

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C02F 3/00 C02F 1/00

Claims (4)

(57) [Claims] 1. A storage tank for storing a powdered sewage treatment agent containing an oil-degrading enzyme and bacteria, and a metering device which faces a lower opening of the storage tank and measures and discharges a predetermined amount of the sewage treatment agent. A supply device, a liquid storage tank disposed below the measuring and supplying device for storing a mixture of the sewage treatment agent and water released from the measuring and supplying device, and a water supply for supplying water to the liquid storing tank. a device, and a switching means for switching the outflow and stopping the kitchen wastewater system from蓄液tank of said mixture, Ri Tsukasa the switching operation of the intermittent motion and said switching means of said metering device and the water supply device, Due to these actions
The holding of the mixed liquid in the livestock liquid tank and the predetermined time
A control device for controlling the outflow of the retained mixed liquid, a kitchen wastewater treatment agent supply device comprising: 2. The treatment agent supply device for kitchen drainage according to claim 1, wherein the liquid storage tank is provided with means for stirring the mixed liquid. 3. The stirring means for the liquid storage tank comprises a propeller fitted to the liquid outlet of the liquid storage tank and having a function of rotating and driving the mixed liquid back from the liquid outlet. 3. The kitchen wastewater treatment agent supply device according to claim 2, wherein the outflow of the mixed liquid from the liquid outlet is stopped and the outflow of the mixed liquid from the liquid outlet is stopped when the rotation is stopped. 4. An overflow port for restricting the liquid level of the mixed liquid to a certain level or less in the liquid storage tank.
4. The kitchen wastewater treatment agent supply device according to any one of claims 1 to 3.