JP2001145876A - Method and apparatus for treating pickles waste liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that there is a feature enabling the reutilization of salt or a refined liquid for pickling with salt in a conventional treatment method but operation is complicated and skill is required and cost increases because many kinds of various chemicals are used and, if the use of chemicals is reduced, many tanks become necessary and a process becomes complicated and a long time is required in treatment. SOLUTION: A pickles waste liquid is stirred at about 40-50 deg. in a primary tank in which enzyme is charged and moisture is evaporated to form a treated waste liquid which is, in turn, heated to 80-100 deg.C in a secondary tank in which enzyme is charged to be stirred and moisture is evaporated to form a secondary treated waste liquid increased in the concentration of salt and this secondary treated waste liquid is separated into a salt compoment and water by a separator. Therefore, by easy and simple operation requiring no experience, that is, by the heating operation of the enzyme added waste liquid, the treatment of the waste liquid of this kind can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating pickled waste liquid,
And a processing device.

[0002]

2. Description of the Related Art Conventionally, a method of treating this kind of pickle waste liquid (pickled waste liquid) is a method of discharging water as it is or a method of discharging water after salt treatment with simple demineralized water or chemicals. Have been. However, the salt concentration in the pickle waste liquid is relatively high, and an increase in the salt concentration in rivers or salt damage to animals and plants is avoided. Therefore, in the industry, for various methods and devices, etc.
It is in the direction of research or execution. However, in reality, no results have been achieved.

[0003] As a part of the improvement, there is a literature on waste liquid of plum dried. Japanese Patent Application Laid-Open No. Hei 11-179342 discloses an apparatus for correcting BOD and COD in waste liquid by umeboshi processing and separating bases (literature).
After adsorbing and removing D, COD, and odor, the adsorbent is precipitated and separated, and the treated liquid is sent to a distillation concentration tank and heated to evaporate water. Is removed, and the steam evaporated from the distillation concentration tank is converted into distilled water via the cooling tank, until the separated salt, distilled water, and the generated concentrated liquid can be effectively used as harmless food. The purpose is to increase the purity. Japanese Patent Application Laid-Open No. 11-197664 discloses rationalization of umeboshi processing and purification of wastewater (literature). After oxidative decolorization, it is diluted and released with water to improve pollution drainage, and electrolytic treatment is used for food, feed, medical products, bath additives,
The purpose of the present invention is to effectively use the plating solution to improve the productivity of umeboshi. As described above, it is an object of the present invention to eliminate pollution and reuse the processing solution. Japanese Patent Application Laid-Open No. Hei 11-221011 discloses a method for effectively utilizing the waste liquid of umeboshi processing (literature). Add to battery, and 10
Salts up to 10,000 PPM and umenic acid up to PH3 were desalted and deoxidized by dialysis and electrodialysis.
It is a composition for effectively using amino acids, spices and the like as a health medicine or a harmless food, and aims to improve water pollution, utilize waste liquid resources, and develop new industries.

[0004]

The above publications are improvements over conventional methods of discharging water after treatment such as untreated water discharge or demineralized water, and are useful in terms of pollution and secondary pollution, or It can be reused as salt, salted purified liquid, etc. However, in the literature,
Since various types of chemicals are used, there are problems such as difficult operation, skill required, and high cost. In the literature, although the use of chemicals is small, since a number of tanks are required, problems such as complicated processes, long processing time, and large installation area are considered. Can be

[0005]

According to the first aspect of the present invention, an enzyme is added to a waste liquid, and the waste liquid (enzyme-added waste liquid) to which the enzyme is added is agitated and / or heated. It is an object of the present invention to be able to process this kind of waste liquid by unnecessary operation, or to simplify and reduce the cost of a pickle waste liquid processing apparatus (processing apparatus).

A first aspect of the present invention is that a waste liquid for pickles is transferred to a primary tank, and an enzyme is charged and agitated at room temperature while stirring and mixing to evaporate water. Sending the treated waste liquid to a secondary tank, charging the enzyme, and then raising the temperature of the treated waste liquid to about 30 to 90 ° C. to increase the water evaporation and the salt water concentration; and the water evaporation and the salt water concentration. The secondary processing waste liquid generated in the step of raising the heat, a heat exchanger, or sent to a separator such as a centrifugal separator, the separation process of separating salt and moisture through this separator, This is a method for treating waste liquid.

A second object of the present invention is to simplify and reduce the cost of the processing apparatus.

A second aspect of the present invention is a storage tank for pickled waste liquid, a primary tank communicating with the storage tank, a secondary tank provided with heating means communicating with the primary tank, and a primary tank and a secondary tank. An exhaust means provided in at least the secondary tank, a heating device for supplying a medium such as hot air or hot water to the heating means, and a heat exchanger or a centrifugal separator for separating salt and water communicating with the secondary tank. And the like, and a device for treating pickled waste liquid.

[0009] The invention of claim 3 intends to achieve the effect of the invention of claim 2 more simply and quickly (with good workability and reduction of work time).

[0010] Claim 3 includes a storage tank for pickled waste liquid, and a primary and secondary tank provided with a heating means communicating with the storage tank.
Of the primary and secondary tanks, at least an exhaust means provided in the secondary tank, a heating device for supplying a medium such as hot air or hot water to the heating means, and a salt and moisture communicating with the secondary tank are separated. And a heat exchanger, or a separator such as a centrifugal separator.

[0011] The invention of claim 4 intends to eliminate the bad smell of the exhaust air (exhaust gas).

[0014] In the fourth aspect, activated carbon is provided in the exhaust means of the secondary tank.
This is a device for treating pickled waste liquid, which is provided with a deodorizing section for bamboo charcoal and other chemical methods.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Waste liquid is supplied from a storage tank to a primary tank through control of a liquid supply horn by automatic operation. Upper and lower limit sensors are provided in the primary tank, and adjust the liquid level in the primary tank. Enzymes are added to the introduced waste liquid, and the preferable mixing ratio is a treatment by stirring and mixing at room temperature while adding 1 liter to 1 ton of waste liquid, or heating (preferably heating to about 40 to 45 ° C). Slurry) The waste liquid and the enzyme are sufficiently stirred and mixed by a process such as stirring and mixing, so that the waste liquid and the enzyme are brought into the state of colloid, thereby improving the salt concentration and promoting the evaporation of water. The supply and discharge from the primary tank can be either a continuous type or a batch type, and is selected according to, for example, the amount of waste liquid, the degree of salt concentration, or the type and size of the processing apparatus.

[0014] The primary treated waste liquid treated in the primary tank is supplied from the primary tank to the secondary tank via a liquid supply hood. This secondary tank is also provided with upper and lower limit sensors, and adjusts the liquid level in the secondary tank. Enzymes are added to this introduced waste liquid (there may be no addition of enzymes), but the preferred mixing ratio is 1 liter per 1 ton of waste liquid while heating (preferably heating to about 80 to 100 ° C). The mixture is stirred (sometimes without a stirrer / stirring device), and the waste liquid and the enzyme are sufficiently stirred and mixed to form a colloidal state so as to improve salt concentration and promote evaporation of water. Other configurations are substantially the same as those of the primary tank.

[0015] The salt and a small amount of water treated in the secondary tank are introduced into the heat exchanger from the secondary tank via a drain hood, and crystallized using heat exchange, vacuum suction and cooling, and Separated into water. This salt is recycled. In addition, a centrifuge, a vacuum boiler,
In some cases, a filter separating means or the like is used. After the treatment in the secondary tank, a cooling means such as a correction cooling or a cooling in the air may be employed.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

A storage tank 1 stores waste liquid for pickles. The storage tank 1 communicates with a vacuum-type primary tank 2 through a pipe 100 and a liquid supply horn 101 (a transporter such as a water supply horn or a horn). Have been.

The primary tank 2 has a stirring blade provided on the tank body 200.
201, a heater 202 (steam coil heater, other heater, etc.) provided as required, a lid 203, a motor 204, a deceleration key 204a, a temperature control sensor 205, an upper / lower sensor (not shown), an inflow port 206,
It comprises a discharge port 207 and a drain 208. The primary tank 2 is connected to a vacuum type secondary tank 4 via a pipe 300 and a liquid supply horn 301. Although not shown, the primary tank 2 may be provided with an exhaust pipe provided with a deodorizing unit such as activated carbon, bamboo charcoal, or other chemical methods.

The secondary tank 4 has a stirring blade provided on the tank body 400.
401, heater 402 (steam coil heater, other heaters, etc.), lid 403
, A motor 404, a deceleration key 404a, a temperature control sensor 405, upper and lower limit sensors (not shown), an inlet 406, an outlet 407, and a drain 408. In the figure, reference numeral 409 denotes an exhaust pipe provided with a deodorizing section using activated carbon, bamboo charcoal, or other chemical methods. The secondary tank 4 is connected to a heat exchanger 6 (separator) via a pipe 500 and a discharge horn 501.

The heat exchanger 6 includes a medium inlet pipe 601 provided in a switchable main body 600, a salt discharge section 602, and a water suction pipe 60.
3 and a filter 604. Also this heat exchanger 6
Is provided with a vacuum device 7. In the figure, reference numeral 8 denotes a heating device.
Note that, instead of the heat exchanger 6, examples of a centrifugal separator, a sedimentation separator, a vacuum separator, a compressor, and the like are also possible.

Incidentally, in addition to the primary tank 2 and the secondary tank 4, a configuration in which a plurality of tanks such as a tertiary tank and the like, and a configuration in which only the primary tank 2 is used in some cases is possible. Although not shown, various safety devices are provided in the primary tank 2 and the like.

[0022]

According to the first aspect of the present invention, the waste liquid for pickles is charged in an enzyme in a primary tank and the water is evaporated by a process of stirring and mixing at room temperature to evaporate the water. A step of raising the temperature to about 80 to 100 ° C. by adding an enzyme and stirring to evaporate water to increase the concentration of salt water, and separating the secondary-treated waste liquid into salt and water by a separator. It consists of a separation step. Therefore, this kind of waste liquid can be treated by an easy, simple and inexperienced operation of stirring and / or heating the enzyme-added waste liquid, or the processing apparatus can be simplified and reduced in cost. , Etc.

The invention according to claim 2 is characterized in that a primary tank communicating with a storage tank for pickled waste liquid, a secondary tank provided with a heating means, an exhaust means provided in at least the secondary tank, It is composed of a heating device for supplying a medium such as hot water, and a separator for separating salt and water that communicate with the secondary tank. Therefore, there is a feature that the treatment device for the pickle waste liquid can be simplified and the cost can be reduced.

The invention according to claim 3 is characterized in that a primary / secondary tank provided with a heating / stirring means communicating with a storage tank for pickled waste liquid, an exhaust means provided in at least the secondary tank, hot air is supplied to the heating means. It is composed of a heating device for supplying a medium such as hot water, and a separator for separating salt and water that communicate with the secondary tank. Therefore, there is a feature that the effect of the invention of claim 2 can be achieved more easily and quickly (with better workability and shorter work time).

According to a fourth aspect of the present invention, the exhaust means of the secondary tank is provided with a deodorizing section such as activated carbon, bamboo charcoal, and other chemical methods. Therefore, there is a feature that the odor of the exhaust air (exhaust) can be eliminated.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating the concept of the present invention.

FIG. 2 is a plan view showing the whole of the present invention.

FIG. 3 is an enlarged sectional view of a primary tank.

FIG. 4 is an enlarged sectional view of a secondary tank.

[Explanation of symbols]

 1 Storage tank 2 Primary tank 200 Tank body 201 Stirrer blade 202 Heater 203 Lid 204 Motor 204a Key 205 Temperature control sensor 206 Inlet 207 Outlet 208 Tren 9 300 Piping 301 Supply liquid 4 Secondary tank 400 Tank body 401 Stirrer blade 402 Heater 403 Lid 404 Motor 404a Keyer 405 Temperature control sensor 406 Inlet 407 Outlet 408 Tren 409 Exhaust pipe 500 Piping 501 Feeding hood 6 Heat exchanger 600 Exchanger body 601 Medium inlet pipe 602 Salt outlet 603 Water suction pipe 604 Filter 7 Vacuum Device 8 Heating device

Claims (4)

[Claims] 1. A waste liquid for pickles is transferred to a primary tank, and a water evaporation step for evaporating water by stirring and mixing at room temperature while adding and stirring an enzyme; and a treated waste liquid generated in the water evaporation step is provided. , Sending the enzyme to the secondary tank and charging the enzyme, and then raising the temperature of the treated waste liquid to about 30 to 90 ° C. to increase the water evaporation and salt water concentration, and the water evaporation and salt water concentration step A separation step of sending the secondary-treated waste liquid generated in the above step to a separator such as a heat exchanger or a centrifugal separator, and separating the salt and moisture through the separator. Method. 2. A storage tank for pickled waste liquid, a primary tank communicating with the storage tank, a secondary tank including heating means communicating with the primary tank, and at least two of the primary and secondary tanks. Exhaust means provided in the next tank, hot air to the heating means,
An apparatus for treating pickled waste liquid, comprising: a heating device for supplying a medium such as hot water; and a heat exchanger or a centrifugal separator for separating salt and water communicating with the secondary tank. 3. A storage tank for pickled waste liquid, a primary / secondary tank provided with a heating means communicating with the storage tank, and an exhaust means provided in at least the secondary tank among the primary / secondary tanks. A heating device that supplies a medium such as hot air or hot water to the heating unit, and a heat exchanger that separates salt and moisture communicating with the secondary tank, or a separator such as a centrifugal separator. Pickle waste liquid treatment equipment. 4. The pickled waste liquid treatment apparatus according to claim 1, wherein the exhaust means of the secondary tank is provided with a deodorizing section such as activated carbon, bamboo charcoal, and other chemical methods.