JP2003251395A - Wastewater control system, terminal, program and charging method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently treat wastewater using microorganisms. <P>SOLUTION: This wastewater control system is constituted so as to control a treatment tank for treating wastewater using microorganisms capable of microbially decomposing a specific compound, and is equipped with a terminal for acquiring the data related to the treatment tank and a central processing unit for performing the communication with the terminal through a network. The terminal has a concentration measuring part for measuring the concentration corresponding to the concentration of the specific compound in the treatment tank and a transmission part for transmitting the concentration value measured in the concentration measuring part to the central processing unit. The central processing unit receives the concentration value of the treatment tank from the terminal. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a wastewater management system, a terminal, a program and a charging method. In particular, the present invention relates to a wastewater management system, a terminal, a program and a charging method for remotely managing a plurality of treatment tanks for treating wastewater.

[0002]

2. Description of the Related Art Generally, the treatment of organic substances in industrial wastewater is carried out by activated sludge treatment. Nowadays, however, compounds which cannot be decomposed by conventional activated sludge treatment, for example, biodegradable chelating agents such as EDTA Organic surfactants such as trihalomethane and trihalomethane, and various surfactants that are nonylphenol derivatives have been discharged into nature and have become a social problem. These compounds are particularly high in concentration (eg 20
If it is 0 ppm or more), in the conventional activated sludge,
Biodegradable is difficult.

For example, the above biodegradable chelating agent is
It is widely used in industrial soap, photographic industry, pulp industry, plating industry, etc. Wastewater containing such a hardly biodegradable substance has a high COD value, but since it is not decomposed by the activated sludge treatment used in conventional wastewater treatment, wastewater treatment methods containing hardly biodegradable substances include wastewater treatment. The most commonly used method is to dilute water with water to reduce the concentration to below the emission control value. In addition, a part of recovery incineration processing is also performed.

[0004]

However, the dilution method is costly for water and does not reduce the total amount of hardly biodegradable substances discharged. Further, the recovery incineration method further increases the cost load. Therefore, as a wastewater treatment method that is low in cost and essentially reduces the total amount of the hardly biodegradable substance contained, a treatment method for degrading the hardly biodegradable substance by microorganisms is being developed. As for the treatment method, it is difficult to control microorganisms and the like. Especially when multiple treatment tanks are installed, it is necessary to control the wastewater treatment by specialists because it is necessary to control the activity of microorganisms in each of the tanks. This is practically difficult to do.

Further, as a business relating to the decomposition of a specific compound by a special microorganism, in the past, a reward was obtained by selling the microorganism, but since the microorganism easily grows under a specific condition, it is once sold. After that, the need for repurchasing will disappear, and the wastewater treatment using such microorganisms has been a problem that is not viable as a business. Therefore, the actual situation is that no active search for microorganisms is performed.

Therefore, an object of the present invention is to provide a management method, a centralized management apparatus, a program, and a charging method by a specialist who can solve the above problems. This object is achieved by a combination of features described in independent claims of the invention. The dependent claims define further advantageous specific examples of the present invention.

[0007]

That is, according to a first aspect of the present invention, there is provided a wastewater management system for managing a treatment tank for treating wastewater by using a microorganism capable of decomposing a specific compound, which relates to the treatment tank. It is equipped with a terminal that acquires data and a centralized control device that communicates with the terminal via a network, and the terminal has a concentration measurement unit that measures the concentration corresponding to the concentration of the specific compound in the treatment tank and the concentration measured by the concentration measurement unit. The central management device receives the concentration value of the processing tank from the terminal. Further, the specific compound is a compound which is difficult to be decomposed by conventional activated sludge. Further, the number of treatment tanks may be two or more.

According to the second aspect of the present invention, there is provided a terminal connected via a network to a central control device for controlling a treatment tank for treating wastewater using a microorganism capable of decomposing a specific compound. A concentration measuring unit for measuring the concentration corresponding to the concentration of the specific compound, and a transmitting unit for transmitting the concentration value measured by the concentration measuring unit to the central control device.

According to a third aspect of the present invention, there is provided a computer program for connecting via a network to a central control device for controlling a treatment tank for treating wastewater using a microorganism capable of decomposing a specific compound, The computer is made to realize a concentration measuring function for measuring the concentration corresponding to the concentration of the specific compound in the processing tank and a transmitting function for transmitting the measured concentration value to the central control device.

According to the fourth aspect of the present invention, when the wastewater treatment system is introduced, the charge is made according to the reduction amount of the cost conventionally required for discharging. Hereinafter, a more preferable form and its details will be shown.

According to the fifth aspect of the present invention, the centralized management device is installed in places physically separated from each other and manages a plurality of treatment tanks for treating wastewater. The difference between the receiving unit that receives the concentration corresponding to the previous specific compound concentration and the concentration corresponding to the specific compound concentration after treatment in association with the treatment tank, and the concentration before treatment and after treatment received by the receiving unit And a density storage unit that stores difference information indicating the difference between the density before processing and the density after processing calculated by the processing unit.

Microorganisms for decomposing substances contained in wastewater are added to each treatment tank, and a microorganism identification information storage unit for storing microorganism identification information for identifying microorganisms in association with the treatment tank, The difference between the concentration before processing and the concentration after processing calculated by the calculation unit may be summarized for each identical microorganism identification information, and the aggregation unit may further include an output unit for outputting the summarized aggregation information. Good.

According to a sixth aspect of the present invention, there is provided a centralized control device for controlling a plurality of treatment tanks for treating wastewater, the predetermined value being determined based on the concentration corresponding to the concentration of the specific compound in each treatment tank. Is stored in association with each processing tank, a receiving unit that receives difference information that specifies the difference between the concentration before processing and the concentration after processing in each processing tank, and the difference received by the receiving unit. The difference between the density before processing and the density after processing specified by the information is compared with a predetermined value stored in the predetermined value storage unit, and is determined in advance based on the comparison result of the comparison unit. And a processing unit that performs processing.

According to a seventh aspect of the present invention, a program for a computer, which is installed in a building physically separated from each other and manages a plurality of treatment tanks for treating wastewater, is a specific compound before treatment. A receiving function to receive the concentration corresponding to the concentration and the concentration corresponding to the specific compound concentration after treatment, a calculation function for calculating the difference between the received concentration before treatment and the concentration after treatment, and the calculated concentration before treatment And a density management function for managing difference information indicating a difference between the processed density and the processed density.

According to the eighth aspect of the present invention, there is provided a computer program for managing a plurality of treatment tanks for treating wastewater, wherein each treatment tank is provided with a predetermined value determined based on the concentration of each treatment tank. A predetermined value management function that manages in association with each other,
A reception function that receives the difference information that specifies the difference between the concentration before treatment and the concentration after treatment in each treatment tank, and the concentration corresponding to the concentration of the specific compound before treatment and the concentration after treatment specified by the received difference information The difference from the concentration corresponding to the specific compound concentration,
The computer is made to realize a comparison function of comparing with a predetermined managed value and a processing function of performing a predetermined process based on the comparison result of the comparison function.

The above summary of the invention does not enumerate all the necessary features of the present invention, and a sub-combination of these feature groups can also be the invention.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The specific compound of the present invention means a compound which is hardly decomposed by conventional activated sludge, for example, a compound having a decomposition rate of 25% or less, further 15% or less, preferably 10% or less. Examples include non-biodegradable chelating agents, organic chlorine compounds, and nonylphenol surfactants. Above all, application to a hardly biodegradable chelating agent is preferable.

The concentration corresponding to the concentration of the specific compound can be determined by analyzing the concentration itself of the specific compound itself by various analytical methods such as liquid chromatography, but other measured values, For example, the COD value can be substituted. Since the automatic analysis is possible in a short time, measuring the COD value is the most preferable method.

As a device for measuring the COD value, for example, OD-1000 / 1100 manufactured by COS Co., Ltd., HORIB
Commercially available devices such as CODA-211 / 212 manufactured by A and Hiranuma fully automatic COD measuring device COD-1500 manufactured by Hitachi High-Technologies Co., Ltd. are included, but are not limited thereto.
Any device that can measure the value may be used.

The concentration is preferably measured by measuring the concentration at both the inlet and outlet of each processing tank. In the case of a two-tank type processing tank, the first tank inlet, the first tank outlet (the same as the second tank inlet),
It is desirable to measure at three locations at the outlet of the second tank. The method of treating with a plurality of treatment tanks is a preferable mode because it is easy to optimize the microorganisms in each treatment tank, and as a result, the decomposition treatment can be performed in a small space and in a short time. Particularly, a two-tank type processing tank is preferable.

INDUSTRIAL APPLICABILITY The present invention is applied to the treatment of wastewater containing a hardly biodegradable substance as described above, but in particular, industrial cleaning water containing a hardly biodegradable chelate, photographic wastewater,
It is preferable to treat a wastewater having a high COD such as a wastewater of the pulp industry or a plating industry with a microorganism. In particular, it is preferably applied to wastewater treatment in the electroless plating industry.

Examples of the hardly biodegradable chelate include ED
Organic aminocarboxylic acids such as TA (ethylenediaminetetraacetic acid), DTPA (diethylenetriaminepentaacetic acid) and PDTA (1,3-propanediaminetetraacetic acid). Especially, the case of EDTA is particularly effective. Not limited to such a biodegradable chelate, any substance having a high COD value can be applied.

The microorganisms to be added include, for example, Bacillus editoridavidus and Bacillus subtilis for decomposing the biodegradable chelating agent.
s), Bacillus megaterium
egaterum), Bacillus sphaericus (B
acillus sphaericus), Bacillus
It is an organic aminocarboxylic acid-degrading bacterium of the genus Bacillus such as Natto (described in JP-A-6-296990). In addition, the microorganism is Pseudomonas of the genus Pseudomonas
No. 43782), and Alcaligenes belonging to the genus Alcaligenes (described in JP-A-58-43782).
Further, Agrobacterium of the genus Agrobacterium may be used. It may also be Mesophyllobacter editor Vidas (described in JP-A-8-289778).

In addition to the bacteria belonging to the genus Pseudomonas, Methylosinus, Methylomonas, Methylobacterium,
Hethylocystis, Alcaligenes, Mycobacterium, Nitroso
monas, Xanthomonas, Spirillum, Vibrio, Bacterium,
Achromobacter, Acinetobacter, Flavobacterium, Chro
mobacterium, Desulfovibrio, Desulfotomaculum, Micr
ococcus, Sarcina, Bacillus, Streptomyces, Nocardi
a, Corynebacterium, Pseudobacterium, Arthrobacte
Microorganisms belonging to the genera r, Brevibacterim, Saccharomyces and Lactobacillus can be used. US431
The microorganisms described in 7885 and 4274954 can also be used.

In the treatment tank for treating the waste liquid, the dry weight of the microorganism is 100 g to 50 kg per 1 cubic meter of the waste water.
Is added. More preferably, 500 g to 5000 g of dry weight of microorganisms are added per cubic meter of wastewater. In the present embodiment, the microorganism may be added directly or may be added in a state of being immobilized on a carrier. Here, the carrier is a medium for immobilizing microorganisms, such as activated carbon particles, carbon fibers, or polymer gel. The use of a carrier is more preferable because the activity of the microorganism is higher. Further, instead of the microorganism, a degrading enzyme in the microorganism may be added.

As a method for entrapping and immobilizing microorganisms, various known methods can be used. Most commonly,
Method of immobilizing synthetic polymer in hydrous gel
No. 263575). Further, a method of immobilizing on activated carbon particles (described in JP-A-11-77074) or a method of immobilizing on carbon fiber cloth (JP-A-11-2)
No. 07379)).

The capacity of the treatment tank for treating wastewater varies depending on the amount of wastewater. For example, the retention time of the waste water in the treatment tank is adjusted to be about 0.2 to 20 days. Particularly, it is preferable to adjust the retention time of the waste water in the treatment tank to about 0.5 to 5 days. A plurality of treatment tanks may be provided. By providing a plurality of treatment tanks, wastewater can be treated more efficiently and in a short time in a small space.

The wastewater treatment device adds the nutrients of the microorganism to the treatment tank when the ability of decomposing the microorganism decreases. Specifically, the wastewater treatment device is a carbon source suitable for the growth of microorganisms,
A nutrient consisting of a nitrogen source or an organic nutrient source inorganic salt is added to the treatment tank. As an organic nutrient source, for example, polypeptone,
Yeast extract, meat extract, molasses, etc. are added. As the inorganic nutrient source, for example, various phosphates and magnesium salts are added. For example, the wastewater treatment device has a capacity of 0.001 to 5
wt% / volume of organic nutrient source and 0.1% of the organic nutrient source
Add ~ 1 wt% / volume of inorganic nutrient source. More preferably, the wastewater treatment apparatus adds 0.01 to 1 wt% / volume of an organic nutrient source and 0.1 to 1 wt% / volume of an inorganic nutrient source of the organic nutrient source.

Further, the waste water treatment device may add microorganisms themselves instead of the nutrients. The types of microorganisms added here are the same as those of the microorganisms added in advance, and thus the description thereof will be omitted. In the wastewater treatment device, the microorganism may be added while being immobilized on the carrier, or the microorganism may be directly added without being immobilized on the carrier.

Here, the wastewater treatment apparatus adds microorganisms of 10 g or more and 50 kg or less in dry weight to the treatment tank per 1 cubic meter of wastewater. More preferably, the wastewater treatment device is
20 g or more of dry weight per cubic meter of wastewater 500
0 g or less of microorganisms are added to the treatment tank.

The wastewater treatment equipment adds nutrients or microorganisms while stirring the inside of the treatment tank. For example, when the nutrients or microorganisms are liquid, the wastewater treatment apparatus adds the nutrients from the solution tank or container by a liquid feed pump or manually while performing aeration in the treatment tank or stirring with a stirrer. When the nutrients or microorganisms are solids such as powders, the wastewater treatment device inputs the nutrients through the input hopper and the transportation device. In this way, by adding nutrients or microorganisms while the wastewater treatment equipment is stirring in the treatment tank,
Microorganisms or nutrients are more evenly dispersed in the treatment tank.

In the wastewater treatment device, both nutrients and microorganisms may be added to the treatment tank. In the most preferable form, the wastewater treatment device is used for several days after adding the nutrients to COD.
Check the change in the value, and add the microorganism if the degree of decrease in the activity of the microorganism is not recovered. At this time, the wastewater treatment device may dilute the wastewater if the reduction of the COD value is not recovered even if the microorganism is further added. As a result, the wastewater treatment device can reliably discharge the wastewater having a reduced COD value.

As a wastewater treatment business for treating wastewater containing such a biodegradable substance using microorganisms,
There is a method of selling microorganisms to users of wastewater treatment destinations. However, when the microorganism grows, once the user purchases the microorganism, additional purchase becomes unnecessary, so it is difficult to continue the business of selling the microorganism, and the business cannot be established. Further, it is preferable to add a management service because it requires specialized management of microorganisms in the treatment tank.

For the user, the merit of introducing this system is that the hardly biodegradable substance is discharged below the regulated concentration.
It is nothing but reducing the amount of diluted water used (saving water) and the cost required for recovery and incineration. Therefore, as a consideration for introducing this system, it is a preferable method to obtain a reward by multiplying the cost reduced as compared with the conventional method by a specific ratio. Further, it is a more preferable method to obtain a reward by multiplying the water saving cost by a specific ratio.

By the way, in the method of decomposing by microorganisms, it is inevitable that the efficiency varies depending on the environmental conditions (air temperature, water temperature, wastewater concentration, etc.). According to this billing method, even if this system does not operate at all for some reason, wastewater can be treated by diluting or recovering and incinerating it as before the introduction of this system. In such a state, the cost burden on the user is zero (same as the state before the introduction), and the user's risk associated with the introduction of this system is eliminated.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the claimed invention, and all combinations of features described in the embodiments are It is not always essential to the solution of the invention.

FIG. 1 shows an outline of a centralized management system.
The factory 40 periodically measures the COD value before and after the treatment of wastewater and the pH value of the treatment tank for treating the wastewater, and the central control device 2
Send to 0. Here, the factory 40 may measure the water temperature, the image, the TOC, the BOD, the measurement date and time, in addition to the COD value and the pH value. In addition, the state of the processing tank is photographed by an image pickup device such as a digital camera, and the image data is periodically collected from the central control device 2
May be sent to 0. In particular, the factory 40 uses the centralized control unit 20 for both the COD value before treatment of wastewater and the COD value after treatment.
It is preferable to send to.

The operator 22 confirms the data received by the centralized management device 20 from the factory 40 and determines whether or not to contact the factory 40. Here, the operator 22 is the factory 4
When contacting 0, information indicating an instruction to the factory 40 may be input to the centralized management device 20, or the factory 40 may be directly contacted by telephone without using the centralized management device 20. For example, the central control device 20 may directly control the pH of the treatment tank by automatic addition of an acid or an alkali by inputting the operator 22, or p of the treatment tank may be controlled.
The H value may be transmitted to the factory 40, information indicating the amount of acid or alkali to be added may be transmitted to the factory 40, and instruction information indicating that the pH value should be controlled is transmitted to the factory 40. You may. The central control device 20 may automatically add nutrients for microorganisms.

FIG. 2 schematically shows a wastewater treatment apparatus having a treatment tank for treating wastewater. Wastewater treatment equipment is the factory terminal 30
And a treatment tank and auxiliary equipment for the treatment tank. Factory terminal 3
0 controls the processing tank by transmitting instruction information to the auxiliary equipment of the processing tank or receiving measurement information from the auxiliary equipment. The wastewater treatment apparatus according to the present invention uses microorganisms to decompose the hardly biodegradable substance contained in the wastewater to reduce the COD concentration of the wastewater. Specifically, the wastewater treatment device is 200
COD of wastewater with COD values from ppm to thousands of ppm
The value is reduced to half or about 100 ppm.

FIG. 3 shows the entire centralized management system according to this embodiment. The centralized management system includes a network 10, a centralized management device 20, a factory terminal 30, and a processing tank 90. The factory terminals 30 are installed in factories 40 that are physically separated from each other. The factory terminal 30 is installed in the factory. Further, the factory terminal 30 is connected to a treatment tank 90 for treating wastewater, acquires wastewater information such as a measured value of COD (chemical oxygen demand), and centralizes the management device 20.
Send to.

The central control device 20 receives the wastewater information from the factory terminal 30 via the network 10 and stores it in the database. Further, the centralized management device 20 transmits processing information indicating processing to be performed by the factory 40 to the factory terminal 30 based on the received wastewater information. The factory terminal 30 performs processing based on the processing information received from the centralized management device 20. The network 10 is a wired communication network, a wireless communication network, or any combination thereof, and includes the Internet, PSTN (Public Switched Telephone Network), LAN, WAN, and the like.

FIG. 4 is a block diagram showing the functional arrangement of the centralized management device 20. The central management device 20 includes a receiving unit 50.
0, an output unit 502, a counting unit 504, a captured image acquisition unit 506, a pH value acquisition unit 508, a determination unit 510,
The COD acquisition unit 512, the calculation unit 514, and the comparison unit 516
It has a processing unit 518, an input unit 520, an image database 532, a measurement value database 534, and a predetermined value database 536.

The image database 532 stores the image data of the image of the state of the processing tank 90 in association with the microorganism ID for identifying the microorganism. Measurement value database 5
34 stores the pre-treatment COD concentration of the waste water before treatment and the post-treatment COD concentration of the waste water after treatment in association with the microorganism ID and the factory number. The predetermined value database 536 is
A COD predetermined value that is a predetermined value regarding the COD concentration and a pH predetermined value that is a predetermined value regarding the pH value are stored. As the predetermined pH value, a value having a range centered on a pH value suitable for the microorganism is stored.

The receiving section 500 receives the factory number for identifying the factory 40, the image data, the pH value, and the COD concentration from the factory terminal 30 for each processing tank. Here, the receiving unit 500
Receives the pre-treatment COD concentration of the waste water before the treatment and the post-treatment COD concentration of the waste water after the treatment as the COD concentration.
The reception unit 500 sends the received image data and factory number to the captured image acquisition unit 506. The receiving unit 500 also sends the received pH value and factory number to the pH value acquisition unit 508.
Further, the receiving unit 500 displays the COD concentration and the factory number by COD.
Send to the acquisition unit 512.

The photographed image acquisition unit 506 associates the received image data with the factory number, and then the image database 532.
To store. The pH value acquisition unit 508 stores the received pH value in the measured value database 534 in association with the factory number. Further, the pH value acquisition unit 508 sends the received pH value and factory number to the determination unit 510. COD acquisition unit 51
2 stores the received COD concentration in the measured value database 534 in association with the factory number. Further, the COD acquisition unit 512 sends the received COD concentration and factory number to the calculation unit 514.

The determination unit 510 extracts from the measurement value database 534 the microorganism ID stored in association with the factory number received from the pH value acquisition unit 508. The microorganism ID is an example of microorganism identifying information that identifies a microorganism. Next, the determination unit 510 determines the predetermined pH value stored in the predetermined value database 5 in association with the extracted microorganism ID.
Extract from 36. Next, the determination unit 510 determines that the pH value received from the pH value acquisition unit 508 is the predetermined value database 5
It is determined whether or not the pH is included in the predetermined value extracted from 36. The determination unit 510 determines that the pH value received from the pH value acquisition unit 508 is the p value extracted from the predetermined value database 536.
When it is determined that it is not included in the H predetermined value, the pH predetermined value, the pH value received from the pH value acquisition unit 508, and the factory number are sent to the processing unit 518.

The processing unit 518 calculates the pH difference by subtracting the intermediate value of the predetermined pH values received from the judgment unit 510 from the pH value. The processing unit 518 calculates the calculated pH.
If the difference is a positive number, an instruction to add an acid to the treatment tank 90 is given. If the calculated pH difference is a negative number, an instruction to add an alkali to the treatment tank 90 is given together with the pH difference. Is transmitted to the factory terminal 30 specified by.

The calculation unit 514 receives the COD concentration and the factory number from the COD acquisition unit 512. The calculation unit 514
Subtract the COD concentration after treatment from the COD concentration before treatment to obtain C
Calculate the OD difference. The calculation unit 514 calculates the calculated COD.
Measured value database 534 by associating the difference with the factory number
To store. Further, the calculation unit 514 sends the calculated COD difference and the factory number to the comparison unit 516.

The comparing unit 516 extracts the microorganism ID stored in association with the received factory number from the measurement value database 534. Next, the comparison unit 516 extracts the COD predetermined value stored in association with the extracted microorganism ID. Next, the comparison unit 516 compares the extracted COD predetermined value with the COD difference received from the calculation unit 514. When the comparison unit 516 determines that the COD difference is less than the COD predetermined value, the comparison unit 516 sends information indicating that the COD difference is less than the predetermined value to the processing unit 518 together with the COD difference and the factory number. The processing unit 518 receives the received information less than the predetermined value and C.
The OD difference is transmitted to the factory terminal 30 specified by the factory number.

The aggregating unit 504 uses the measurement value database 53.
The measured values stored in 4 are summarized for each microorganism ID. Specifically, the totaling unit 504 displays the CO for each microorganism ID.
The D difference is extracted and the average value is calculated. Also, the counting unit 504
May accumulate the COD difference for each microorganism ID. The totaling unit 504 may also calculate the rate of change of the COD difference. In this way, the aggregation unit 504 aggregates the measurement values stored in the measurement value database 534 and sends the aggregation result to the output unit 502.

The output unit 502 outputs the counting result received from the counting unit 504. The output unit 502 also extracts image data from the image database 532 and displays it.
The operator of the centralized management device 20 browses the displayed image. Here, if the operator of the centralized management device 20 finds an abnormality in the displayed image, for example, the input unit 520
Enter the abnormal information indicating the abnormality and the factory number. Upon receiving the abnormality information, the input unit 520 sends the factory number and the abnormality information to the processing unit 518. The processing unit 518 transmits the received abnormality information to the factory terminal 30 specified by the factory number.

FIG. 5 shows an example of the data format of the measurement value database 534. Measurement value database 53
4 has a table and a microorganism ID field for each factory number. The microorganism ID field stores a microorganism ID for identifying a microorganism used for wastewater treatment in a factory. The microorganism ID may be, for example, information indicating the type of microorganism or information indicating a culture lot.

The table has a month and date field, a processing bath 1 field, and a processing bath 2 field. The month date field stores information indicating the month and day. Processing tank 1
The field and the treatment tank 2 field each include a pre-treatment field, a post-treatment field, and a difference field. The pre-treatment field stores information indicating the pre-treatment COD concentration before treating the wastewater in the treatment tank 90 with the microorganism. The post-treatment field is a post-treatment CO after treatment of wastewater with a microorganism in the treatment tank 90.
Information indicating the D density is stored. The difference field stores information indicating the COD difference, which is a value obtained by subtracting the post-treatment COD concentration from the pre-treatment COD concentration.

When the COD concentration before processing and the COD concentration after processing are acquired, the COD acquisition unit 512 stores them in the measured value database 534 in association with the acquired month and date. Further, the calculation unit 514 stores the calculated COD difference in association with the date and time when the COD concentration is acquired by the COD acquisition unit 512. Here, the measurement value database 534 is the microorganism ID.
Is stored for each factory number, the microorganism ID may be stored for each treatment tank instead of this.

FIG. 6 shows an example of the data format of the image database 532. Image database 532
Has a table and a microorganism ID field for each factory number. The microorganism ID field stores a microorganism ID for identifying a microorganism used for wastewater treatment in a factory.

The table includes a month date field and an image field. The month date field stores information indicating the month and day. The image field stores image data. Here, the image field may store the image data itself or information for identifying the image data. Here, the image data means the imaged processing tank 90.
Is image data showing the image. In this way, the captured image acquisition unit 506 stores the image data in association with the date when the image data was created.

FIG. 7 shows an example of the data format of the predetermined value database 536. Predetermined value database 53
6 is a microorganism ID field, a tank field, and CO
It includes a D predetermined value field and a pH predetermined value field. The microorganism ID field stores a microorganism ID for identifying a microorganism. The tank field stores information for identifying the tank. The COD predetermined value field stores information indicating the COD predetermined value. The predetermined pH value field stores information indicating the predetermined pH value.

FIG. 8 is a block diagram showing the functional configuration of the factory terminal 30. The factory terminal 30 is a COD measuring unit 600
, PH measuring unit 602, imaging unit 604, and addition unit 60
6, pH adjustment unit 608, display unit 610, and transmission unit 6
12 and a receiving unit 614.

The COD measuring unit 600 measures the pre-treatment COD concentration of the wastewater before being treated and the post-treatment COD concentration of the wastewater after being treated, and the measured COD concentration is sent to the transmitting unit 61.
Send to 2. The pH measuring unit 602 measures the pH of the treatment tank 90 that treats the wastewater, and sends the measured pH value to the transmitting unit 612. The imaging unit 604 images the state inside the processing tank 90,
The captured image data is sent to the transmission unit 612.

The transmission unit 612 sets the COD concentration received from the COD measurement unit 600, the pH value received from the pH measurement unit 602, and the image data received from the image pickup unit 604 into a factory number for identifying the factory terminal 30. The information is associated and transmitted to the centralized management device 20.

The receiving unit 614 has an instruction to add an acid to the treatment tank 90 and a pH difference, an instruction to add an alkali to the treatment tank 90 and a pH difference, information less than a predetermined value, and information indicating a COD difference.
Alternatively, the abnormality information is received from the central control device 20. Next, the receiving unit 614 sends the received information to the processing unit 616.

When the processing unit 616 receives the instruction to add the acid to the processing tank 90 and the pH difference, it calculates the amount of acid to be added to the processing tank 90 based on the received pH difference. The processing unit 616 sends the amount information indicating the calculated amount of acid to the pH adjusting unit 608. The pH adjusting unit 608 adds the amount of acid specified by the received amount information to the processing tank 90.

When the processing section 616 receives the instruction to add the alkali to the processing tank 90 and the pH difference, the processing section 616 calculates the amount of the alkali to be added to the processing tank 90 based on the received pH difference. The processing unit 616 sends the amount information indicating the calculated amount of alkali to the pH adjusting unit 608. pH adjuster 608
Adds the amount of alkali specified by the received amount information to the processing tank 90.

The processing unit 616 uses the information less than the predetermined value and the CO
When the information indicating the D difference is received from the receiving unit 614, the CO
Based on the D difference, the nutrient amount of the nutrient to be added to the treatment tank 90 is calculated. The processing unit 616 sends nutrient amount information indicating the calculated nutrient amount to the addition unit 606. The addition unit 606 adds the amount of nutrients specified by the nutrient amount information received from the treatment unit 616 to the treatment tank 90.

The processing unit 616 sends the abnormality information received from the receiving unit 614 to the display unit 610. The display unit 610 is
When the abnormality information is received, the fact that an abnormality has occurred in the processing tank 90 is displayed.

FIG. 9 is a schematic view of the processing tank 90 connected to the factory terminal 30. In this embodiment, as an example, a processing tank 90 in which two tanks are arranged in series is used. The processing tank 90 includes an adjusting tank 100, a first COD measuring unit 110, a first processing tank 200, a second COD measuring unit 250, a second processing tank 300, and a third COD measuring unit. It includes 350, a sludge tank 400, and a diluting section 460.

The first COD measuring unit 1 in FIG.
10, the second COD measuring unit 250, and the third COD measuring unit 350 realize the function of the COD measuring unit 600 in FIG. 8. Further, the pH adjusting unit 220 and p in FIG.
The H adjustment unit 320 realizes the function of the pH adjustment unit 608 in FIG. The addition unit 210 and the addition unit 310 in FIG. 9 realize the function of the addition unit 606 in FIG.

The adjusting tank 100 adjusts the wastewater and transfers it to the first processing tank 200. For example, the adjustment tank 100 adjusts the flow rate, pH, and temperature of the wastewater so as to be suitable for the microorganism contained in the first treatment tank 200.

First processing tank 200 and second processing tank 30
The capacity of 0 depends on the amount of waste water. For example, the capacities of the first treatment tank 200 and the second treatment tank 300 are such that the residence time of the wastewater is about 0.2 to 20 days for the first treatment tank 200 and the second treatment tank 300 in total. Adjusted. In particular, the capacities of the first treatment tank 200 and the second treatment tank 300 are such that the residence time of the waste water is 0.5 to 5 days for the first treatment tank 200 and the second treatment tank 300 in total. It is preferably adjusted. The wastewater is moved to the second treatment tank 300 when it stays in the first treatment tank 200 for a predetermined period, and is moved to the sludge tank 400 when it stays for a further predetermined period.

First processing tank 200 and second processing tank 30
At 0, microorganisms are added. The added microorganism decomposes the hardly biodegradable substance contained in the wastewater. The hardly biodegradable substance is, for example, EDTA (ethylenediaminetetraacetic acid), D
TPA (diethylenetriaminepentaacetic acid), PDTA
Organic aminocarboxylic acids such as (1,3-propanediaminetetraacetic acid). Especially, EDTA is particularly effective.

The microorganisms contained in the first treatment tank 200 are acclimated to wastewater having a higher concentration than the microorganisms contained in the second treatment tank 300. For example, the first processing tank 200 is
It contains microorganisms acclimated to wastewater with a COD concentration of 0.5 g / l to 20 g / l. On the other hand, the second processing tank 300
Contains microorganisms acclimated to wastewater having a COD concentration of 0.3 g / l to 14 g / l. In the present embodiment, the first
The microorganisms contained in the treatment tank 200 of Bacillus are
editabidus-1 with polypeptone 0.5
%, Yeast extract 0.1%, Cu-EDTA 0.1%, 1
A conditioned medium was obtained by carrying out stationary culture at 37 ° C. for 7 days in a culture solution of / 30 M phosphate buffer (500 ml), pH 6.0. The microorganisms contained in the second treatment tank 300 are
Bacillus editabidus-1, polypeptone 0.5%, yeast extract 0.1%, Cu-EDT
A 0.01%, 1/30 M phosphate buffer 500 ml, p
It is acclimated by performing static culture in a culture solution of H6.0 at 37 degrees for 7 days.

The first COD measuring section 110 is used in the adjusting tank 10.
Before the wastewater is transferred from 0 to the first treatment tank 200, the COD concentration of the wastewater is measured. The first COD measurement unit 110 is
For example, it is installed near the inlet of the waste water of the first treatment tank 200. Further, the first COD measuring unit 110 may be installed in the adjusting tank 100, and COD of the wastewater before the addition of the microorganisms.
It may be arranged at a position where the concentration can be measured.

The second COD measuring section 250 measures the COD concentration of the waste water immediately before the waste water is transferred from the first treatment tank 200 to the second treatment tank 300. The second COD measurement unit 250 is installed, for example, in the vicinity of the waste water inlet of the second treatment tank 300. In addition, the second COD measuring unit 250 is
May be installed in the treatment tank 200 or the second treatment tank 300, and is placed at a position where the COD concentration of the wastewater can be measured immediately before or immediately after the wastewater is transferred from the first treatment tank 200 to the second treatment tank 300. If you have.

The third COD measuring section 350 measures the COD concentration of the waste water when the waste water is transferred from the second treatment tank 300 to the sludge tank 400. Third COD measuring unit 350
Is installed near the outlet of the waste water of the second treatment tank 300. In addition, the third COD measuring unit 350 is used in the second processing tank 3
00 or the sludge tank 400, as long as the COD concentration of the waste water after being treated in the second treatment tank 300 can be measured.

The first processing tank 200 is further provided with an addition section 21.
0, a pH adjusting unit 220, a stirring unit 230, and a filter 240. The pH adjuster 220 measures the pH of the wastewater in the first treatment tank 200 and adjusts it to a preset pH value. Here, the pH adjusting unit 220
Is a p suitable for the microorganism added to the first treatment tank 200.
Adjust to H. The pH adjuster 220 has, for example, a pH of 6.
The waste water in the first treatment tank 200 is adjusted so as to be about 0. The stirring unit 230 stirs the waste water in the first processing tank 200. The stirring unit 230 may stir the wastewater with a mechanical device. In the present embodiment, the stirring unit 230
Stirs the wastewater by aeration. Filter 24
0 separates the waste water from the carrier and the waste water in which the microorganisms are immobilized in the first treatment tank 200.

The adding section 210 adds the nutrients of the microorganism to the first treatment tank 200 when the ability of decomposing the microorganism is lowered. Specifically, the addition unit 210, when the factory terminal 30 receives information below the predetermined value from the centralized management device 20, adds a nutrient consisting of a carbon source, a nitrogen source or an organic nutrient inorganic salt suitable for the growth of microorganisms. , To the first treatment tank 200. As the organic nutrient source, for example, polypeptone, yeast extract, meat extract, molasses, etc. are added. As the inorganic nutrient source, for example, various phosphates and magnesium salts are added. Here, the addition unit 210 adds to the first treatment tank 200 an amount of nutrients corresponding to the COD difference received from the centralized management device 20 by the factory terminal 30.

Furthermore, the addition unit 210 firstly detects the microorganisms that decompose the hardly biodegradable substance contained in the waste water when the information less than the predetermined value is received from the central control device 20 even after adding the nutrients of the microorganisms. Is added to the processing tank 200 of. Here, in the addition unit 210, the factory terminal 30 has the central management device 20.
The amount of nutrients corresponding to the COD difference received from the first processing tank 200 is added.

In this case, the addition section 210 adds 10 g or more and 50 kg or less of dry weight of microorganisms to the first treatment tank 200 per cubic meter of wastewater. More preferably,
The addition unit 210 uses a dry weight of 20 g or more and 5000 g or less of microorganisms per cubic meter of wastewater in the first treatment tank 20.
Add to 0.

The second processing tank 300 comprises an addition section 310,
pH adjuster 320, agitator 330, and filter 340
Have and. The addition unit 310 adds the nutrients of the microorganisms to the second treatment tank 300 when the ability of decomposing the microorganisms in the second treatment tank 300 decreases. Specifically, the addition unit 31
0 is suitable for the growth of microorganisms when the difference between the COD concentration measured by the second COD measuring unit 250 and the COD concentration measured by the third COD measuring unit 350 is lower than a predetermined value. A nutrient composed of a carbon source, a nitrogen source or an organic nutrient source inorganic salt is added to the second treatment tank 300.

Further, the addition section 310 determines that the difference between the COD concentration measured by the second COD measurement section 250 and the COD concentration measured by the third COD measurement section 350 is When it is lower than a predetermined value, the microorganism itself that decomposes the organic aminocarboxylic acid contained in the wastewater is added to the first treatment tank 200.

Regarding the operations and configurations of the pH adjusting unit 320, the stirring unit 330, and the filter 340, the pH values are adjusted.
The operations and configurations of the adjusting unit 220, the agitating unit 230, and the filter 240 are almost the same, and thus the description thereof will be omitted.

The sludge tank 400 stores sludge contained in the second treatment tank 300, and drains the supernatant of the waste water to the outside. Further, the sludge tank 400 may complement the decomposition processing in the first processing tank 200 and the second processing tank 300. That is, the sludge tank 400 may decompose and remove organic substances and inorganic substances that could not be treated in the first treatment tank 200 and the second treatment tank 300.

Further, the sludge tank 400 has an adjusting section 420, an aeration section 430, and a drainage pump 450. Adjustment unit 4
20 injects into the sludge tank 400 a neutralizing agent for neutralizing the wastewater, a nutrient for the microorganisms in the sludge tank 400, and the like. Aeration section 43
0 is aeration. The drainage pump 450 drains the supernatant of the wastewater in the sludge tank 400 to the outside. Drainage pump 450
May have a drainage inspection unit. The drainage inspection unit inspects the amount of the liquid content drained by the drainage pump 450. The diluting unit 460 dilutes the wastewater drained by the drainage pump 450 with dilution water.

The processing tank 90 according to the present embodiment has two tanks of the first processing tank 200 and the second processing tank 300, but it may be one tank or more tanks. May be.
Further, in the present embodiment, the factory terminal 30 calculates the amount of nutrients or microorganisms to be added based on the COD difference, but either nutrient addition or microorganism addition may be selected based on the COD difference. Good. Further, instead of the factory terminal 30, the central control device 20 may calculate the amount of nutrients or microorganisms to be added based on the COD difference.

FIG. 10 is a block diagram showing the hardware configuration of the centralized management device 20. The central management device 20 is
CPU 700, ROM 702, RAM 704, communication interface 706, display unit 708 as an example of output unit 502, and hard disk drive 710.
And a floppy (registered trademark) disk drive 712
And a floppy disk 714. CPU70
0 operates based on the programs stored in the ROM 702 and the RAM 704. Communication interface 70
6 communicates with the factory terminal 30 via the network 10. Hard disk drive 7 as an example of a storage device
Reference numeral 10 stores setting information and a program for operating the CPU 700. Further, the communication interface 706 may communicate with the factory terminal 30 via a dedicated line. The hard disk drive 710 connects to various databases,
By transmitting or receiving data, data writing, reading, and content updating are performed.

The floppy disk drive 712 reads data or programs from the floppy disk 714 and provides them to the CPU 700. The CD-ROM drive 716 reads data or programs from the CD-ROM 718 and provides them to the CPU 700. The communication interface 706 connects to the network 10 to send and receive data. The display unit 708 displays image data and total results.

The software executed by the CPU 700 is
It is stored in a recording medium such as the floppy disk 714 or the CD-ROM 718 and provided to the user. The software stored in the recording medium may be compressed or uncompressed. The software is installed in the hard disk drive 710 from the recording medium, and the RAM 704
Read out and executed by the CPU 700.

The software stored in the recording medium and provided, that is, the software installed in the hard disk drive 710, has a receiving function,
Output function, totaling function, captured image acquisition function, pH value acquisition function, judgment function, COD acquisition function, calculation function, comparison function,
Processing function, input function, image management function, measurement value management function,
And a predetermined value management function. The processing that each of these functions causes the computer to cause the CPU 700 to perform is as follows.
Since the functions and operations of the corresponding members in the centralized management device 20 according to the present embodiment are the same, the description thereof will be omitted.

A floppy disk 714 or a CD-ROM 718 as an example of a recording medium shown in FIG. 10 stores a part or all of the functions of the centralized management device 20 in all the embodiments described in the present application. can do.

These programs are read directly from the recording medium.
It may be read out to the AM and executed, or once installed in the hard disk drive and then read out to the RAM and executed. Further, the program may be stored in a single recording medium or a plurality of recording media. Further, the modules stored in the recording medium may provide each function in cooperation with the operating system. For example, the operating system may be requested to perform some or all of the functions, and the functions may be provided based on the response from the operating system.

The programs or modules shown above may be stored in an external recording medium. As a recording medium, in addition to a floppy disk, a CD-ROM, a D
An optical recording medium such as VD or PD, a magneto-optical recording medium such as MD, a tape medium, a magnetic recording medium, or a semiconductor memory such as an IC card or a miniature card can be used. In addition, a hard disk or R provided in a server system connected to a dedicated communication network or the Internet
A storage device such as an AM may be used as a recording medium and the program may be provided to the central management device 20 via a communication network.

FIG. 11 is a block diagram showing the hardware configuration of the factory terminal 30. The factory terminal 30 is the CPU 8
00, ROM 802, RAM 804, communication interface 806, various measuring device interface 80
8, a hard disk drive 810, a floppy disk drive 812, and a CD-ROM drive 816
With. The CPU 800 is a ROM 802 and a RAM
It operates based on the program stored in 804. The communication interface 806 communicates with the factory terminal 30 via the network 10. A hard disk drive 810, which is an example of a storage device, includes setting information and a CPU 8
00 stores the operating program. The communication interface 806 may communicate with the factory terminal 30 via a dedicated line. The hard disk drive 810 connects to various databases and sends or receives data to write or read data and update the contents. The various measurement device interface 808 receives or transmits data from various measurement devices 809.
Various measuring devices 809 measure COD value and p in the processing tank.
Measure the H value. Further, the various measuring devices 809 include a function of an image capturing device that captures an image of the state of the processing tank.

The floppy disk drive 812 reads data or programs from the floppy disk 814 and provides them to the CPU 800. The CD-ROM drive 816 reads data or programs from the CD-ROM 818 and provides them to the CPU 800. The communication interface 806 connects to the network 10 and transmits / receives data.

The software executed by the CPU 800 is
It is stored in a recording medium such as the floppy disk 814 or the CD-ROM 818 and provided to the user. The software stored in the recording medium may be compressed or uncompressed. The software is installed in the hard disk drive 810 from the recording medium, and the RAM 804
Read out and executed by the CPU 800.

The software stored in the recording medium and provided, that is, the software installed in the hard disk drive, has a functional configuration including a reception function, a transmission function, a COD measurement function, a pH measurement function, an imaging function, an addition function, It has a pH adjustment function, a display function, and a processing function.
The processing that each of these functions causes the computer to cause the CPU to perform is the same as the function and operation of the corresponding member in the factory terminal 30 in the present embodiment, and thus the description thereof is omitted.

A floppy disk 814 or a CD-ROM 818 as an example of a recording medium shown in FIG. 11 stores some or all functions of the operation of the factory terminal 30 in all the embodiments described in the present application. be able to.

These programs are read directly from the recording medium.
It may be read out to the AM and executed, or once installed in the hard disk drive and then read out to the RAM and executed. Further, the program may be stored in a single recording medium or a plurality of recording media. Further, the modules stored in the recording medium may provide each function in cooperation with the operating system. For example, the operating system may be requested to perform some or all of the functions, and the functions may be provided based on the response from the operating system.

The programs or modules described above may be stored in an external recording medium. As a recording medium, in addition to a floppy disk, a CD-ROM, a D
An optical recording medium such as VD or PD, a magneto-optical recording medium such as MD, a tape medium, a magnetic recording medium, or a semiconductor memory such as an IC card or a miniature card can be used. In addition, a hard disk or R provided in a server system connected to a dedicated communication network or the Internet
A storage device such as an AM may be used as a recording medium and the program may be provided to the factory terminal 30 via a communication network.

Although the present invention has been described with reference to the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various changes or improvements can be added to the above-described embodiment. For example, in the centralized management system according to the present embodiment, the factory terminal 30 is connected to the processing tank 90 to instruct addition of nutrients, but instead of this, the centralized management device 20 directly to the processing tank 90. You may instruct to add nutrients etc. It is apparent from the description of the scope of claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

[0100]

As is apparent from the above description, according to the present invention, wastewater can be efficiently treated using microorganisms.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a centralized management system.

FIG. 2 is a diagram schematically showing a wastewater treatment apparatus having a treatment tank for treating wastewater.

FIG. 3 is a diagram showing an entire centralized management system according to the present embodiment.

FIG. 4 is a block diagram showing a functional configuration of a centralized management device 20.

5 is a diagram showing an example of a data format of a measurement value database 534. FIG.

FIG. 6 is a diagram showing an example of a data format of an image database 532.

FIG. 7 is a diagram showing an example of a data format of a predetermined value database 536.

FIG. 8 is a block diagram showing a functional configuration of a factory terminal 30.

9 is a schematic view of a processing tank connected to a factory terminal 30. FIG.

10 is a block diagram showing a hardware configuration of a centralized management device 20. FIG.

11 is a block diagram showing a hardware configuration of a factory terminal 30. FIG.

[Explanation of symbols]

10 Wastewater treatment equipment 20 Central management device 30 factory terminals 40 factories 110 First COD measurement unit 200 First treatment tank 210 Addition Department 220 pH adjuster 230 Stirrer 240 filters 250 Second COD measuring unit 300 Second treatment tank 310 Addition Department 320 pH adjuster 330 Stirrer 340 filter 350 Third COD measurement unit 500 receiver 502 Output section 504 Totaling department 506 Captured image acquisition unit 508 pH value acquisition unit 510 Judgment section 512 COD acquisition unit 514 operation unit 516 Comparison section 518 Processing unit 520 Input section 532 image database 534 Measurement database 536 predetermined value database 600 COD measuring unit 602 pH measuring unit 604 Imaging unit 606 Addition Department 608 pH adjuster 610 display 612 transmitter 614 Receiver 616 Processing unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Noboru Sasaki             Fuji Photo, 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture             Within Film Co., Ltd. F-term (reference) 4D027 CA07                 4D040 DD03 DD07 DD12 DD14

Claims (6)

[Claims] 1. A wastewater management system for managing a treatment tank for treating wastewater using microorganisms capable of degrading a specific compound, the terminal including a terminal for acquiring data on the treatment tank, and communication with the terminal via a network. A central control unit for controlling the concentration of the specific compound in the treatment tank, and a transmitting unit for transmitting the concentration value measured by the concentration measuring unit to the central control unit. The wastewater management system, wherein the centralized management device receives the concentration value of the treatment tank from the terminal. 2. The wastewater management system according to claim 1, wherein the specific compound is not decomposed by conventional activated sludge. 3. The wastewater management system according to claim 1, wherein the number of the treatment tanks is two or more. 4. A terminal connected via a network to a central control device for managing a treatment tank for treating wastewater using a microorganism capable of degrading a specific compound, the concentration corresponding to the concentration of the specific compound in the treatment tank. A terminal, comprising: a concentration measuring unit that measures the concentration, and a transmitting unit that transmits the concentration value measured by the concentration measuring unit to the centralized management device. 5. A program for a computer, which is connected via a network to a central control device for managing a treatment tank for treating wastewater using microorganisms capable of degrading a specific compound, wherein the concentration of the specific compound in the treatment tank is adjusted. A program for causing the computer to realize a concentration measuring function for measuring a corresponding concentration and a transmitting function for transmitting the measured concentration value to the central control device. 6. A billing method for a wastewater management system, characterized in that a bill is charged according to the amount of reduction in the cost conventionally required for discharging with the introduction of the wastewater treatment system according to claim 1.