CN109081499A - Waste water treatment system and wastewater treatment method - Google Patents
Waste water treatment system and wastewater treatment method Download PDFInfo
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- CN109081499A CN109081499A CN201810134197.6A CN201810134197A CN109081499A CN 109081499 A CN109081499 A CN 109081499A CN 201810134197 A CN201810134197 A CN 201810134197A CN 109081499 A CN109081499 A CN 109081499A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present invention obtains a kind of waste water treatment system, can control ozone usage amount the yield of excess sludge changes, so that steadily meeting the water standard of discharge water and obtaining best reducing sludge volume effect.Waste water treatment system determines that sludge extracts flow based on the sludge concentration of the mixed liquor in biological treating tank (1) and preset Treatment of Sludge ratio, and extracts the product of flow according to sludge concentration and sludge to determine the ozone usage amount in ozone treatment.Furthermore, suitable Treatment of Sludge is found out than the convergency value with ozone injection rate based on water quality data more than any one in the sludge concentration of mixed liquor and mixed liquor, processing water (W3) and discharge water (W4), and adjust sludge and extract flow and ozone usage amount, to meet calculated suitable Treatment of Sludge than the convergency value with ozone injection rate.
Description
Technical field
The present invention relates to the use of ozone makes the waste water of the excess sludge volume reduction generated by the biological treatment of organic wastewater
Processing system and wastewater treatment method.
Background technique
As the method for processing organic wastewater, the processing that microorganism is utilized in conventional actived sludge etc. is widely used.?
It is utilized in the processing of microorganism, along with processing, microbes breeding is to generate comprising activated sludge and other floating materials
Excess sludge.Since excess sludge is sludge not needed in water process, is burned, filled out as trade waste
Bury processing.In the processing of such excess sludge, ensure to need huge energy and cost including waiting comprising new land used,
Therefore it is required that reducing the yield of excess sludge.
As one of the method for yield for reducing excess sludge, it is known to the sludge reduction processing of ozone be utilized.
This be the excess sludge comprising microorganism etc. is decomposed using ozone come make its is solubilized, to make excess sludge volume reduction
Processing.Excess sludge carries out effect, the i.e. reducing sludge volume effect of volume reduction according to the treating capacity of excess sludge and used smelly
Oxygen amount and change.In the case where the treating capacity of excess sludge or insufficient ozone usage amount, expected sludge can not be obtained
Volume reduction effect.Conversely, if above-mentioned amount excessively if microbes by excessive decomposition, facilitate under the microbial activity of wastewater treatment
Drop, therefore the water quality for handling water is possible to be deteriorated.
Therefore, in waste water treatment system, it is appropriate that research, which controls the treating capacity of excess sludge or ozone usage amount,
The method of value.Such as in patent document 1, according to the sludge concentration of the mixed liquor of biological treating tank and mixing liquid measure and solid-liquid
The sludge concentration and separated sludge amount of the separated sludge of separating tank carry out the holding sludge quantity in arithmetic system, and based on calculated
Sludge quantity and target is kept to keep the difference of sludge quantity to find out the increase and decrease amount for modifying sludge, thus to from mixed liquor or separated sludge
The set amount of the sludge extracted is increased and decreased.
In addition, the amount of sludge is sent back to by controlling in patent document 2, so that maintaining regulation always in biological treating tank
The MLSS (Mixed Liquor Suspended Solids: mixed liquor suspended solid, MLSS) of concentration, to improve the effect of biological treatment
Rate, and reduce the load of ozone treatment.Also, in patent document 3, determined whether based on the water quality data of waste water or discharge water
It needs height to handle, in case of need, based on waste water or discharges water quality and the water of water to determine the behaviour of ozone generator
Make condition.
Existing technical literature
Patent document
Patent document 1: Japanese Patent Laid-Open 2007-253011 bulletin
Patent document 2: Japanese Patent Laid-Open 9-99292 bulletin
Patent document 3: Japanese Patent Laid-Open 7-251186 bulletin
Summary of the invention
The technical problems to be solved by the invention
As described above, it is previous, various control methods are studied, so that the treating capacity of excess sludge and ozone usage amount become suitable
When value, however due to the yield of excess sludge with flow into biological treating tank organic wastewater water, water quality and temperature
Deng variation and change, both to meet the water standard of preset discharge water therefore, it is difficult to control ozone usage amount
(such as by the prepared discharge water standard in various countries), best reducing sludge volume effect of getting back.
In patent document 1, holding sludge quantity and setting in monitoring system suitably extract sludge quantity, however for being directed to
The ozone amount for extracting sludge and injecting is not controlled.In addition, in patent document 2, determine treating capacity with by biological treating tank
Interior MLSS maintains normal concentration, however ozone usage amount is not controlled, and only describes every sludge SS weight
10%~20% is more appropriate.
Therefore, in method documented by patent document 1,2, COD (the Chemical oxygen in biological treating tank
Demand: COD) etc. in the case that variation has occurred in water quality, ozone necessary to the decomposition of activated sludge can not be coped with
The variation of amount, it is difficult to meet discharge water standard.In addition, even if being able to satisfy discharge water standard, it is contemplated that provide excessive smelly
The case where oxygen, the problem of being got higher there is also cost.
In addition, determining the operation item of ozone generator based on the water quality data of waste water or discharge water in patent document 3
Part, however be difficult to determine ozone usage amount corresponding with the amount of the excess sludge to change in this method, it is difficult to it obtains most
Good reducing sludge volume effect.Also, in above patent document 1-3, do not take some countermeasures to the raising of ozone treatment efficiency, there are smelly
The problem of oxygen is more using quantitative change, operating cost becomes larger.
The present invention was completed to solve the above problem, and its object is to obtain a kind of waste water treatment system and waste water
Processing method also can control ozone usage amount even if the yield of excess sludge changes, and set in advance so that steadily meeting
The water standard of fixed discharge water, and obtain best reducing sludge volume effect.
Technical scheme applied to solve the technical problem
Waste water treatment system according to the present invention includes: biological treating tank, and the biological treating tank is right under aerobic condition
Organic wastewater carries out biological treatment, and generates the water containing Treatment of Sludge comprising activated sludge；Separation of solid and liquid portion, the separation of solid and liquid portion
Water containing Treatment of Sludge generated in biological treating tank is separated into thickened sludge and processing water；Ozone reaction portion, the ozone are anti-
It answers portion to extract flow with defined sludge and extract in water containing Treatment of Sludge generated in biological treating tank or separation of solid and liquid portion to divide
The thickened sludge separated out carries out ozone treatment, and treated water containing Treatment of Sludge or thickened sludge are returned to biological treatment
Slot；Ozone generator, the ozone generator generate ozone and provide ozone reaction portion；Sludge concentration determination unit, the sludge
Concentration mensuration unit is measured the sludge concentration comprising the mixed liquor including the water containing Treatment of Sludge in biological treating tank；Water
Matter determination unit, water-quality determination unit measurement mixed liquor, the discharge water for handling water and being obtained after carrying out disinfection to processing water
Respective water quality；And operation and control device, the operation and control device determine sludge based on the sludge concentration of mixed liquor
Flow is extracted, the ozone usage amount in ozone treatment is determined based on the sludge concentration of mixed liquor and the product of sludge extraction flow,
And made based on water quality data more than any one in mixed liquor, processing water and discharge water to adjust sludge extraction flow and ozone
Dosage.
In addition, wastewater treatment method according to the present invention includes: biologic treatment process, the biologic treatment process is aerobic
Under the conditions of to organic wastewater carry out biological treatment, and generate include activated sludge water containing Treatment of Sludge；Solid-liquid separation process, should
Water containing Treatment of Sludge generated in biologic treatment process is separated into thickened sludge and processing water by solid-liquid separation process；And change
Matter process, the modification process with defined sludge extract flow extract biologic treatment process generated in water containing Treatment of Sludge,
Or the thickened sludge isolated in solid-liquid separation process carries out ozone treatment, the wastewater treatment method is based on comprising at biology
The sludge concentration of the mixed liquor including water containing Treatment of Sludge in science and engineering sequence come determine sludge extract flow, the dirt based on mixed liquor
Mud concentration and sludge extract the product of flow to determine the ozone usage amount in ozone treatment, and based on mixed liquor, processing water and
Water quality data after carrying out disinfection to processing water more than any one in obtained discharge water adjusts sludge extraction flow and smelly
Oxygen usage amount.
Invention effect
Related waste water treatment system according to the present invention, sludge concentration and dirt based on the mixed liquor in biological treating tank
Mud extracts the product of flow to determine the ozone usage amount in ozone treatment, and based in mixed liquor, processing water and discharge water
Water quality data more than any one extracts flow and ozone usage amount to adjust sludge, thus even if the yield of excess sludge
It is changed with the variation of the water, water quality and temperature of the organic wastewater for flowing into biological treating tank, also can control ozone usage amount,
So that steadily meeting the water standard of preset discharge water, and obtain best reducing sludge volume effect.
In addition, wastewater treatment method involved according to the present invention, the sludge based on the mixed liquor in biologic treatment process
Concentration and sludge extract the product of flow to determine the ozone usage amount in ozone treatment, and based on mixed liquor, processing water and
Water quality data more than any one in discharge water extracts flow and ozone usage amount, therefore even if excess sludge to adjust sludge
Yield with flow into biologic treatment process organic wastewater water, water quality and temperature variation and change, also can control
Ozone usage amount so that steadily meeting the water standard of preset discharge water, and obtains best reducing sludge volume effect.
Detailed description of the invention
Fig. 1 is the schematic diagram for showing the structure of waste water treatment system involved in embodiment of the present invention 1.
Fig. 2 is that the sludge shown in waste water treatment system involved in embodiment of the present invention 1 extracts flow and ozone usage amount
Determining method figure.
Fig. 3 is the schematic diagram for showing the structure of waste water treatment system involved in embodiment of the present invention 2.
Fig. 4 is the figure for showing the relationship between ozone concentration and the convergency value of ozone injection rate.
Fig. 5 is the schematic diagram for showing the structure of waste water treatment system involved in embodiment of the present invention 3.
Specific embodiment
Embodiment 1.
Hereinafter, being based on attached drawing, waste water treatment system involved in embodiment of the present invention 1 and wastewater treatment method are said
It is bright.Fig. 1 is the schematic diagram for showing the structure of waste water treatment system involved in present embodiment 1.Involved in present embodiment 1
Waste water treatment system is configured to comprising biological treating tank 1, air-diffuser 2, solid-liquid separation tank 7, sterilization pool 8, ozone reaction
Slot 9 and ozone generator 12 etc..In addition, W1 is treated water i.e. waste water in Fig. 1, W2 is water containing Treatment of Sludge, and W3 is place
Water is managed, W4 indicates discharge water.
In addition, wastewater treatment method involved in present embodiment 1 mainly includes biologic treatment process, solid-liquid separation process
And modification process.In biologic treatment process, biological treatment is carried out to organic wastewater W1 under aerobic condition, and generate comprising living
The W2 of water containing Treatment of Sludge of property sludge.In solid-liquid separation process, by the water containing Treatment of Sludge generated in biologic treatment process
W2 is separated into thickened sludge and processing water W3.In addition, extracting flow in modification process with defined sludge and extracting in biological treatment
The W2 of water containing Treatment of Sludge generated in process (or the thickened sludge isolated in solid-liquid separation process) is simultaneously carried out at ozone
Reason.
When carrying out above-mentioned operation, based on including the mixed liquor including the W2 of water containing Treatment of Sludge in biologic treatment process
Sludge concentration extracts the product of flow based on the sludge concentration of mixed liquor and sludge to determine sludge extraction flow to determine ozone
Ozone usage amount in processing.In addition it is also possible to more than based on any one in mixed liquor, processing water W3 and discharge water W4
Water quality data extracts flow and ozone usage amount to adjust sludge.
Processing, effect in each section for constituting waste water treatment system involved in present embodiment 1 is illustrated.It is raw
Object treatment trough (aeration tank) 1 carries out biological treatment to waste water W1 under aerobic condition, and generates mainly comprising by aerobic microbiological
Aggregate constitute activated sludge including the W2 of water containing Treatment of Sludge.That is, in biological treating tank 1, there are waste water W1 with contain
The mixed liquor of Treatment of Sludge water W2, biological treatment are more in progress, then the ratio of the W2 of water containing Treatment of Sludge in mixed liquor becomes higher.
Gas diffuser 2 provides the air sent out by air supplying device 3 in biological treating tank 1, to will give birth to
Object treatment trough 1 is set as aerobic condition.As air supplying device 3, air blower or compression are used according to required air offer amount
Machine etc..In addition, sludge concentration determination unit i.e. sludge concentration analyzer 4 is provided in biological treating tank 1, at biology
The sludge concentration of mixed liquor in reason slot 1 is measured.Also, in biological treating tank 1, it is provided with water-quality determination unit i.e. water
Matter analyzer 5a, to be measured to the water quality of the mixed liquor in biological treating tank 1.
The W2 of water containing Treatment of Sludge generated in biological treating tank 1 is transported to separation of solid and liquid portion i.e. solid-liquid via piping 6a
Separating tank 7.As solid-liquid separation tank 7, using terminal precipitation tank or UF membrane slot etc., by what is generated in biological treating tank 1
The W2 of water containing Treatment of Sludge is separated into thickened sludge and processing water W3.The a part for the thickened sludge isolated is sent via thickened sludge
The piping 6b of reuse is sent back to biological treating tank 1.It is piped in 6b, is connected with pump (the diagram province for sending thickened sludge back to
Slightly).
Processing water W3 after separating in solid-liquid separation tank 7 with thickened sludge is transported to sterilization pool 8 via piping 6c.Match
In pipe 6c, it is provided with the water quality detector 5b being measured to the water quality of processing water W3.Processing water W3 is sterilized in sterilization pool 8
Afterwards, rivers and creeks etc. is disposed to as discharge water W4 via piping 6d.Discharge water W4 needs to meet the prepared discharge water in various countries
Water standard (in the case where Japan, for by the discharge water standard etc. that is lauched Dow process defined) is provided with pair in piping 6d
The water quality detector 5c that the water quality of discharge water W4 is measured.
In addition, being extracted to make the excess sludge volume reduction in biological treating tank 1 via the piping 6e of sludge extraction
The W2 of water containing Treatment of Sludge of biological treating tank 1.Be piped 6e in, be provided with measurement sludge extract flow sludge stream meter 10a with
And sludge draw-off pump 11a.The W2 of water containing Treatment of Sludge being extracted carries out ozone treatment in ozone reaction portion, includes microorganism
Deng excess sludge be decomposed.Ozone reaction portion has ozone reaction slot 9, make to extract from biological treating tank 1 containing from sludge
It manages the piping 6g of water circulation and ozone is injected to the injector (injector) 17 of the water containing Treatment of Sludge.
Quotient obtained from excess sludge yield of the ozone treatment sludge quantity of every day divided by every day is " Treatment of Sludge
Than " sludge that is determined by sludge stream meter 10a extracts flow and determine.Sludge draw-off pump 11a is extracted with the sludge determined
Flow extracts the W2 of water containing Treatment of Sludge, to make it set Treatment of Sludge ratio, and is delivered to ozone reaction slot 9.Sludge
The size of draw-off pump 11a according to the Treatment of Sludge number etc. of excess sludge yield, Treatment of Sludge when every day by being calculated
Sludge out extracts flow, the setting position of sludge draw-off pump 11a and lift caused by the crushing because being piped 6e etc. to determine
It is fixed.
The lower part of ozone reaction slot 9 is connected with the piping 6f that sludge is sent back to, thus by sludge is contained after ozone treatment
Processing water returns to biological treating tank 1.Pump etc. can be used in sending back to for the water containing Treatment of Sludge, however configures in ozone reaction slot 9
In the case where the top of biological treating tank 1, nature decline can use to be sent back to.In addition, about Treatment of Sludge ratio with
Sludge extracts the setting method of flow, is described in detail later using the flow chart of Fig. 2.
Ozone generator 12 apply ac high voltage between opposite electrode via dielectric make electric discharge constantly generate,
And pass through oxygen in the discharge space, to generate ozone gas.In the dense of the ozone as caused by ozone generator 12
In degree measurement, use general ozone concentration meter (diagram is omitted).Ozone concentration meter can be set in the piping of ozone injection
14a can also be assembled into ozone generator 12.In addition, the flow of ozone is piped the ozone gas flow meter 16 of 14a by being set to
To be measured.
In ozone generator 12, it is connected with power supply device, raw material provides device and cooling device (equal illustration omitted).It mentions
The raw material of the ozone of ozone supply generator 12 is not particularly limited, however other than liquid oxygen, can also use pass through
PSA (Pressure Swing Adsorption: pressure-variable adsorption) or PVSA (Pressure Vacuum Swing
Adsorption: Vacuum Pressure Swing Adsorption) and the oxygen of generation.It, can also be according to being mentioned in addition, in order to ensure efficiency of ozone generation
The nitrogen of the oxygen flow setting addition 0.05%~0.5% of confession or the addition gas offer portion of air etc..
To ozone generator 12 carry out cooling cooling device include make cooling medium recycle refrigerant circulation pump and
Cooling cooler is carried out to the cooling medium after the heat as caused by ozone generator 12 is absorbed.It, can as cooler
To use heat exchanger, condenser or refrigerator etc..As cooling medium, in addition to tap water, can also use be mixed into ion
Exchanged water, anti-icing fluid, scale remover or water of preservative etc..
The ozone generated by ozone generator 12 is fed to the gas of injector 17 via the piping 14a of ozone injection
Suction port.Injector 17 is set to the piping 6g for being mounted on the sludge circulation of side of ozone reaction slot 9, for anti-from ozone
It answers slot 9 to extract and the injection of ozone of water containing Treatment of Sludge that recycles and makes its contact ozone in piping 6g.It is piped in 6g, in addition to
Injector 17 is additionally provided with sludge stream meter 10b and sludge circulation pump 11b.
Water containing Treatment of Sludge after being filled with ozone by injector 17 is from the lower part for the ozone reaction slot 9 for being connected with piping 6g
The inside for flowing into ozone reaction slot 9, is moved upward and returns with the extraction of the water containing Treatment of Sludge from biological treating tank 1
Return piping 6g.Mixing effect is obtained by making the circulation of water containing Treatment of Sludge as a result, so as to improve the sludge in injector 17
With the reaction effect of ozone.The discharge ozone being stored in ozone reaction slot 9 is transported to via the piping 14b of ozone discharge
Ozonolysis equipment 18 is discharged.Discharge ozonolysis equipment 18 carries out after ozone resolution process will be discharged and be oxygen to atmosphere
Discharge.
Data used in the operation that data storage device 19 carries out operation and control device 21 store, this
In embodiment 1, storage include at least sludge concentration analyzer 4, water quality detector 5a, 5b, 5c, sludge stream meter 10a, 10b,
And the data including the measured value of ozone gas flow meter 16.Data storage device 19 respectively with sludge concentration analyzer 4, water
Matter analyzer 5a, 5b, 5c, sludge stream meter 10a, 10b and ozone gas flow meter 16 carry out signal connection, and with online
Mode collects the data including the measured value comprising above-mentioned component.
Experimental data input unit 20 store comprising mixed liquor sludge concentration, water quality and temperature and ozone usage amount or
Various experimental datas including related data between reducing sludge volume effect.It is input to the experiment number of experimental data input unit 20
According to obtaining in the following manner, it may be assumed that for waste water W1, mixed liquor, processing water W3 and discharge water W4, it is assumed that various situations, i.e.
Sludge concentration, water quality, temperature etc. implement ozone treatment experiment or verification test with practical or same generation sludge.
Specifically, following data etc. are input to experimental data input unit 20: the sludge concentration of the water containing Treatment of Sludge
Related data between (MLSS or organic concentration) and ozone usage amount or reducing sludge volume effect；The COD of the water containing Treatment of Sludge,
BOD (Biochemical oxygen demand: biochemical oxygen demand), TOC (Total Organic Carbon: total organic
Carbon) etc. related data between water quality datas and ozone usage amount or reducing sludge volume effect；Water quality data or row with discharge water
The data for the ozone usage amount corresponding with the discharge differential data of water standard that discharges water；The dirt of water containing Treatment of Sludge or thickened sludge
Mud concentration；The concentration of the ozone injected relative to primary datas such as COD and the data of amount；With the gas-liquid flow-rate ratio of injector 17
The achievement data of the corresponding Biodegradable for indicating organic matter of the value of (ozone flow/sludge circulation flow, be denoted as G/L below)
The data etc. of the variation of (COD, absorbance etc.).
Operation and control device 21 and data storage device 19, experimental data input unit 20, sludge draw-off pump 11a, dirt
Mud circulating pump 11b and ozone generator 12 carry out signal connection respectively.Operation and control device 21 are from data storage device 19
Obtained with experimental data input unit 20 and data and execute operation necessary to operation, determining not only to meet discharge water standard but also
The sludge of available best reducing sludge volume effect extracts flow and ozone usage amount.In addition, operation and control device 21 control
Sludge draw-off pump 11a, sludge circulation pump 11b and ozone generator 12, to make it the sludge that is determined extract flow with
Ozone usage amount.
Then, using the flow chart of Fig. 2, the sludge carried out to operation and control device 21 extracts flow and ozone uses
The determining method of amount is illustrated.Firstly, in step sl, obtaining from data storage device 19 and being surveyed by sludge concentration analyzer 4
The sludge concentration for the mixed liquor in biological treating tank 1 made.In addition, due to the sludge in biological treating tank 1 precipitability compared with
Height, therefore the measurement of the sludge concentration for being carried out by sludge concentration analyzer 4, before extracting the W2 of water containing Treatment of Sludge when
It carves, is carried out again after the mixed liquor being sufficiently stirred in biological treating tank 1.That is, the mixing that sludge concentration analyzer 4 determines
The sludge concentration of liquid and the sludge concentration of the W2 of water containing Treatment of Sludge are roughly equal.
Then, in step s 2, on the basis of preset Treatment of Sludge ratio, based on the Treatment of Sludge ratio and in step
The sludge concentration got in S1 come determine sludge extract flow.Treatment of Sludge is more negative than according to the microorganism in biological treating tank 1
Lotus and excess sludge yield set suitable value, and are input to experimental data input unit 20.
The decomposition amount for the microorganism in activated sludge realized when Treatment of Sludge is than less than 2.0 by ozone treatment is not
Sufficiently, it is possible to surplus sludge volume can not be made to be substantially reduced.In addition, ozone treatment can excessive decomposition activity dirt if more than 4.0
The water quality of the microorganism of mud, the decline of microbial activity degree, processing water W3 is possible to be deteriorated.Therefore, suitable Treatment of Sludge ratio
Value is set as 2.0 or more 4.0 hereinafter, being preferably set to 3.0 or less.
Then, in step s3, according to the sludge concentration of the mixed liquor got in step S1 with determine in step s 2
Sludge extract flow product, determine ozone treatment in ozone usage amount.Herein, for preset Treatment of Sludge ratio,
The data of the ozone injection rate referring to needed for per certain sludge quantity, and the product of flow is extracted with sludge to determine according to sludge concentration
Determine ozone usage amount.In addition, the data of ozone injection rate needed for per certain sludge quantity are stored in experimental data input unit
20。
Then, in step s 4, determined respectively from the acquisition of data storage device 19 by water quality detector 5a, 5b, 5c
Mixed liquor, processing water W3 and the water quality data for discharging water W4.Then, in step s 5, from be stored in experimental data input dress
The related data and water quality data and ozone set between 20 sludge concentration and ozone usage amount or reducing sludge volume effect use
In related data between amount or reducing sludge volume effect, referring to the sludge concentration got in step sl and in step
The associated related data of the water quality data got in S4.
Specifically, referring to get in step s 4 mixed liquor, processing water W3 and discharge water W4 in it is any one
A above associated related data of water quality data is adjusted sludge based on the water quality data and extracts flow and ozone use
Amount.For example, the COD value of the water quality data of the mixed liquor got in step s 4 is than extracting and joining in the case where usually high
According to the related data between the COD for being stored in experimental data input unit 20 and ozone usage amount or reducing sludge volume effect.
Then, in step s 6, the related data based on institute's reference, for the sludge concentration that gets in step sl with
The water quality data got in step s 4 finds out suitable Treatment of Sludge than the convergency value with ozone injection rate by calculating
(value when stablizing).The convergency value of ozone injection rate is the dirt by the product of ozone concentration and ozone flow divided by the water containing Treatment of Sludge
Mud concentration and sludge extract to be worth obtained from the product of flow, is indicated with following formula (1).
X=(C (O3)·F(O3))/(C(SS)·F(SS))(1)
Herein, X is the convergency value (mgO of ozone injection rate3/ gSS), C (O3) it is ozone concentration (mgO3/ L), F (O3) it is flow of ozone
It measures (L/min), C (SS) is the sludge concentration (gSS/L) of the water containing Treatment of Sludge, and F (SS) is that sludge extracts flow (L/min).
In addition, decomposing the sludge in water containing Treatment of Sludge, the excess sludge in abundant decomposing organism treatment trough 1 simultaneously from abundant
Inhibit because of caused by the injection of excessive ozone from the perspective of unreacted ozone increase, preferably the convergency value of ozone injection rate
In 20mgO3/ gSS or more 50mgO3/ gSS or less.In addition, it is contemplated that the ozone that can be generated using current ozone generator 12
Concentration, and from the Biodegradable for improving the sludge in water containing Treatment of Sludge and promote excess sludge in biological treating tank 1
From the perspective of volume reduction, preferably ozone concentration is in 100mg/L or more 400mg/L or less.
For determine every day of Treatment of Sludge ratio excess sludge yield with flow into biological treating tank 1 waste water
The variation of water, water quality, organic loading and the temperature of W1 etc. and change.Therefore, best reducing sludge volume effect in order to obtain,
Need sludge concentration (MLSS, organic concentration) based on the mixed liquor in biological treating tank 1, COD, BOD, TOC, DO
Water quality datas, water and the temperature such as (Dissolved Oxygen: dissolved oxygen), pH, phosphorus concentration, nitrogen concentration are suitable to determine
Sludge nursing than and ozone injection rate convergency value.
For example, the convergency value of suitable Treatment of Sludge when ozone injection rate is in the case of waste water treatment and civil
It is different in the case where the drainage sunk well of plant chimney stalk.In the value that COD the coexists civil work bigger than public waste water treatment plant
In the case where the waste water of the case where factory's waste water or the substance comprising being easy consumption ozone, it is found through experiments that smelly compared with sludge
Oxygen first reacts with the substance for being easy consumption ozone, reacts again with sludge later, the convergence of suitable ozone injection rate
It is big that value becomes the case where than common waste water treatment plant.Accordingly, for sludge concentration and sludge extraction flow based on mixed liquor
Product and the ozone usage amount that determines, need to determine additional ozone amount based on the water quality data (COD etc.) of mixed liquor.
In addition, when processing water W3 is disposed to rivers and creeks etc. as discharge water W4 via sterilization pool 8, it is necessary to meet discharge water
Matter standard.Between the water quality of the mixed liquor in biological treating tank 1 and the water quality of final discharge water W4, in the biography that water quality changes
Pass that middle there are several days or so time differences, it is therefore desirable to determine Treatment of Sludge appropriate than the convergency value with ozone injection rate, with
So that the water quality data of discharge water W4 meets discharge water standard.
Then, in the step s 7, adjustment sludge extracts flow and ozone usage amount, is found out in step s 6 with satisfaction suitable
When Treatment of Sludge than the convergency value with ozone injection rate.If determine the convergency value of ozone injection rate appropriate, sludge concentration,
And sludge extracts flow, then utilizes above-mentioned formula (1), finds out ozone usage amount (ozone concentration and ozone appropriate by calculating
Flow).
Specifically, the automatic Treatment of Sludge for meeting and finding out in step s 6 that calculates is than the convergency value with ozone injection rate
Optimal parameter (sludge extracts flow, ozone usage amount, the time of implementation ozone treatment and number etc. in one day), and it is based on this
A little state modulator sludge draw-off pump 11a, sludge circulation pump 11b and ozone generator 12.
The example of flow and ozone amount is extracted for the water quality data adjustment sludge in the step s 7 based on discharge water W4
It is illustrated.Operation and control device 21 are for discharging any project (such as COD value) of the water quality data of water W4 and discharging water
Differential data between matter standard, referring to the related data between the COD value and reducing sludge volume effect for discharging water, to determine not surpass
The sludge for crossing discharge water standard extracts the setting value of flow.Sludge draw-off pump 11a is controlled in a manner of being no more than the setting value
Output, and the flow determined by sludge stream meter 10a is maintained to the value smaller than setting value.Sludge draw-off pump 11a's
Output can for example be controlled by using inverter.
In addition, operation and control device 21 be for discharging the differential data between the COD value of water W4 and discharge water standard,
Referring to the related data between the COD value and ozone usage amount for discharging water, to determine that the ozone for being no more than discharge water standard makes
The setting value of dosage.The ozone concentration and ozone flow of ozone generator 12 are controlled in a manner of being no more than the setting value, and will
Ozone usage amount in ozone treatment maintains the value smaller than setting value.
In addition, being extracted for adjusting sludge based on the water quality data of the mixed liquor in biological treating tank 1 in the step s 7
The example of flow and ozone amount is illustrated.In experimental data input unit 20, the mixed liquor that is stored in biological treating tank 1
Water quality data and ozone additional quantity between related data.Operation and control device 21 determine to be suitble to referring to the related data
The ozone additional quantity of the water quality data of mixed liquor, and adjust ozone concentration and ozone flow.
In addition, in the step s 7, can also be taken out according to time and the number for implementing ozone treatment in one day to adjust sludge
Take flow and ozone usage amount.For based on Treatment of Sludge than suitably determining one come the processing sludge quantity of the every day determined
It number of processes and time.The known time interval for implementing ozone treatment can have an impact the water quality of sludge, if processing time
Number is more, interval is too short, then water quality has the tendency that variation.Accordingly it is also possible to the water based on discharge water standard and discharge water W4
The difference of prime number evidence come determine implement ozone treatment time and interval.
As the method for the time and interval for determining to extract the W2 of water containing Treatment of Sludge from biological treating tank 1, it is referred to defeated
Enter to the dissolved organic matter concentration of experimental data input unit 20 and in one day between the time and number of implementation ozone treatment
Related data determine to be stored in the value of the dissolved organic matter concentration of the mixed liquor of data storage device 19.In addition, passing through
Sludge circulation pump 11b is set to extract the time of the W2 of water containing Treatment of Sludge and variation occurred at intervals, so as to adjust ozone injection rate.
In addition, the method for adjustment as the ozone usage amount in step S7, exist in injector 17 ozone flow with
The method that G/L is adjusted.G/L in injector 17 can sufficiently decompose the sludge in water containing Treatment of Sludge, not
It is particularly limited to, but is set as that ozone is made efficiently to react with sludge, and inhibit because of caused by the injection of excessive ozone not
The increase of the ozone of reaction.
Relationship between value for the G/L in injector 17 and the convergency value of ozone injection rate is tested (260nm
Absorbance measurement), as a result, it is possible to confirm, the smaller then ozone treatment efficiency of the value of the G/L in injector 17 is higher, ozone
The convergency value of injection rate becomes smaller.According to the experimental result, preferably operation and control device 21 is taken out based on the sludge determined
Take flow and ozone usage amount come to the smelly of the flow of the water containing Treatment of Sludge and injecting jet device 17 recycled in piping 6g
The concentration and flow of oxygen are controlled, so that the value of the G/L in injector 17 becomes minimum value.Specifically, G/L is set in
0.01 or more 0.3 hereinafter, and be preferably set to 0.2 or less.
Waste water treatment system involved in present embodiment 1 is not limited to structure shown in FIG. 1, can carry out various changes
Shape.For example, in Fig. 1, solid-liquid separation tank 7 and 1 separate configuration of biological treating tank, however also can use configuration in biological treating tank
Solid-liquid separation membrane in 1 is separated into thickened sludge and processing water W3.
In addition, extracting the W2 of water containing Treatment of Sludge generated in biological treating tank 1 in Fig. 1 and being delivered to ozone reaction slot
9, however the thickened sludge isolated in solid-liquid separation tank 7 can also be extracted and be delivered to ozone reaction slot 9.In this case, base
It is determined with preset Treatment of Sludge ratio in the sludge concentration of the thickened sludge of solid-liquid separation tank 7 from solid-liquid separation tank 7
Sludge extract flow.Furthermore it is possible to according to the W2's of water containing Treatment of Sludge for being delivered to solid-liquid separation tank 7 from biological treating tank 1
The cocnentration factor of sludge concentration and solid-liquid separation tank 7 finds out the sludge concentration of the thickened sludge of solid-liquid separation tank 7.
In addition, ozone reaction portion has ozone reaction slot 9 in Fig. 1, however it may not possess ozone reaction slot 9.This
Outside, injector 17 has been used as the method for implanting of ozone, however can also be using modes such as air-leakaging type, mechanical agitation types.This
Outside, data storage device 19 is collected with online mode comprising sludge concentration analyzer 4 and each water quality detector 5a, 5b, 5c etc.
Data including measured value, however part or all of above-mentioned data can also be inputted by operator.
As described above, waste water treatment system and wastewater treatment method involved in 1 according to the present embodiment, at biology
The sludge concentration and sludge of mixed liquor in reason slot 1 extract the product of flow to determine the ozone usage amount in ozone treatment, and
Based on mixed liquor, processing water W3 and discharges the water quality data in water W4 more than any one and extract flow and smelly to adjust sludge
Oxygen usage amount, thus even if water, water quality and the temperature of the adjoint waste water W1 for flowing into biological treating tank 1 of the yield of excess sludge
Variation and change, also can control ozone usage amount, so that steadily meeting discharge water standard, and obtain best sludge and subtract
Hold effect.
In addition, the sludge concentration and water quality data for mixed liquor determine ozone usage amount appropriate, therefore can prevent
The excessive offer of ozone.Also, flow is extracted based on the sludge determined and ozone usage amount is controlled, so that injector 17
In G/L value become minimum value, to improve ozone treatment efficiency.Thus, it is possible to meet row with less ozone usage amount
It puts water standard and obtains best reducing sludge volume effect, and operating cost can be inhibited.
Embodiment 2.
Fig. 3 is the schematic diagram for showing the structure of waste water treatment system involved in embodiment of the present invention 2.In addition, in Fig. 3,
Identical label is marked to part identical with Fig. 1.In waste water treatment system involved in present embodiment 2, ozone injection is used
Piping 14a in include ozone inspissator 13 and ozone gas pressure gauge 15.Ozone generator 12 and ozone inspissator 13 are by oxygen
The piping 14c of pneumatic transmission reuse is attached.Processing, effect and the above embodiment in structure and each section in addition to this
1 is identical, therefore omits the description herein.
Generated ozone in ozone generator 12 can be concentrated in ozone inspissator 13, and generate 400mg/L with
Upper, maximum 2000mg/L high-concentrated ozone.Ozone inspissator 13 includes that inside includes by refrigerant silica gel after cooling etc.
The adsorption tower of adsorbent and refrigerator for cooling down refrigerant.Ozone inspissator 13 mainly utilizes the attraction of injector 17
Oxygen is discharged from the adsorbent for being adsorbed with ozone to improve the ozone concentration in adsorption tower in power.It can also replace spraying with vacuum pump
Emitter 17.The high-concentrated ozone generated by ozone inspissator 13 is fed to injector 17 via the piping 14a of ozone injection
Gas suction port.In addition, oxygen unadsorbed in ozone inspissator 13 is sent back to ozone generator via piping 14c
12, and recycled.
In present embodiment 2, data storage device 19 respectively with sludge concentration analyzer 4, water quality detector 5a, 5b,
5c, sludge stream meter 10a, 10b, ozone gas pressure gauge 15, ozone gas flow meter 16 and it is set to ozone inspissator 13
The thermometer (diagram omit) of adsorption tower carry out signal connection, and store the data including the measured value comprising above-mentioned component.
In addition, operation and control device 21 and data storage device 19, experimental data input unit 20, sludge draw-off pump
11a, sludge circulation pump 11b, ozone generator 12 and ozone inspissator 13 carry out signal connection respectively.Operation and control dress
It sets 21 and obtains data necessary to operation from data storage device 19 and experimental data input unit 20, to determine both to meet discharge
Water standard and the sludge of available best reducing sludge volume effect extraction flow and ozone usage amount.
In addition, operation and control device 21 control sludge draw-off pump 11a, sludge circulation pump 11b, ozone generator 12, with
And ozone inspissator 13, to make it the extraction mud discharge and ozone usage amount determined.For example, operation and control device
21 obtain the temperature and the measured value of ozone gas pressure gauge 15 of the adsorption tower of ozone inspissator 13 from data storage device 19, and
Feedback control is carried out, so that the convergency value for the ozone injection rate injected to injector 17 becomes determined value.Ozone as a result,
Inspissator 13 can obtain optimal adsorption and desorption conditions, can generate the ozone of desired concentration.
Fig. 4 shows the concentration of ozone for being injected into the water containing Treatment of Sludge and between the convergency value of ozone injection rate
Relationship tested after obtained from result.In Fig. 4, horizontal axis is concentration of ozone gas (mgO3/ L), the longitudinal axis is ozone injection
Convergency value (the mgO of amount3/gSS).In addition, the convergency value of the ozone injection rate of the longitudinal axis is by concentration of ozone gas 50mgO3When/L
The convergency value of ozone injection rate is set as relative value when 1.By the result tested it has been confirmed that the concentration of the ozone injected is higher
Then the convergency value of ozone injection rate is smaller, and required ozone usage amount is fewer.
According to the experimental result, preferably operation and control device 21 extract flow based on the sludge determined and ozone uses
Measure come the concentration of the ozone to the flow of the water containing Treatment of Sludge and injecting jet device 17 recycled in piping 6g and flow into
Row control, so that the gas-liquid flow-rate ratio in injector 17 becomes minimum value and ozone concentration becomes peak.
According to the present embodiment 2, other than effect identical with above embodiment 1, by making in ozone treatment
With high-concentrated ozone, so that the raising of ozone treatment efficiency can also be further realized compared with above embodiment 1, and reduce smelly
Oxygen usage amount.Can inhibit as a result, comprising including ozone generator 12 initial cost and ozone generate, the operation of injection at
This.In addition, oxygen unadsorbed in ozone inspissator 13 is returned to ozone generator 12 and is recycled, therefore can be into
One step reduces operating cost.
Embodiment 3.
Fig. 5 is the schematic diagram for showing the structure of waste water treatment system involved in embodiment of the present invention 3.In addition, in Fig. 5,
Identical label is marked to part identical with Fig. 1.Waste water treatment system involved in present embodiment 3 include nozzle diameter not
Same multiple injector 17a, 17b, 17c (being referred to as injector 17) and the injector liquid being connected with each injector 17
Circuit switching valve 22 and injector gas line switching valve 23.The processing in structure and each section in addition to this, effect with it is upper
It states embodiment 1 and embodiment 2 is identical, therefore omit the description herein.
In present embodiment 3, operation and control device 21 respectively with injector liquid line switching valve 22 and injector
Gas line switching valve 23 carries out signal connection.Identically as above embodiment 1, operation and control device 21 are stored from data
Device 19 obtains sludge concentration and water quality data of the mixed liquor in biological treating tank 1 etc., and defeated referring to experimental data is stored in
The related data for entering device 20 calculates suitable Treatment of Sludge than the convergency value with ozone injection rate, to determine that sludge extracts stream
Amount with ozone usage amount, with meet calculated suitable Treatment of Sludge than the convergency value with ozone injection rate.
In addition, operation and control device 21 determine to be most suitable for determined sludge from multiple injector 17a, 17b, 17c
The injector 17 of flow and ozone usage amount is extracted, and switches injector liquid line switching valve 22 and is cut with injector gas line
Valve 23 is changed, to provide circulating sludge and ozone to the injector 17.
According to the present embodiment 3, other than effect identical with above embodiment 1 and embodiment 2, by having
Nozzle diameter different multiple injector 17a, 17b, 17c, so that the flow that can be carried out the circulating sludge of reply can also be expanded
Range.Even if variation as a result, in water, water quality and temperature of waste water W1 etc. for flowing into biological treating tank 1 is larger, remaining dirt
In the biggish situation of the variation of the yield of mud, it also can steadily meet discharge water standard, and obtain best reducing sludge volume
Effect.In addition, the present invention can be freely combined each embodiment in its invention scope, or suitable to each embodiment
Locality is deformed, is omitted.
Industrial practicability
The present invention can carry out volume reduction as the excess sludge of generation when making to carry out organic wastewater biological treatment using ozone
The waste water treatment system of change is utilized.
Label declaration
1 biological treating tank
2 gas diffusers
3 air supplying devices
4 sludge concentration analyzers
5a, 5b, 5c water quality detector
6a, 6b, 6c, 6d, 6e, 6f, 6g piping
7 solid-liquid separation tanks
8 sterilization pools
9 ozone reaction slots
10a, 10b sludge stream meter
11a sludge draw-off pump
11b sludge circulation pump
12 ozone generators
13 ozone inspissators
14a, 14b, 14c piping
15 ozone gas pressure gauges
16 ozone gas flow meters
17,17a, 17b, 17c injector
18 discharge ozonolysis equipments
19 data storage devices
20 experimental data input units
21 operations and control device
22 injector liquid line switching valves
23 injector gas line switching valves
Claims (16)
1. a kind of waste water treatment system characterized by comprising
Biological treating tank, which carries out biological treatment to organic wastewater under aerobic condition, and generates comprising activity
The water containing Treatment of Sludge of sludge；
Water containing Treatment of Sludge generated in the biological treating tank is separated into concentration dirt by separation of solid and liquid portion, the separation of solid and liquid portion
Mud and processing water；
Ozone reaction portion, which is extracted flow and extracted with defined sludge contains generated in the biological treating tank
The thickened sludge isolated in Treatment of Sludge water or the separation of solid and liquid portion carries out ozone treatment, and will treated containing dirt
Mud processing water or thickened sludge return to the biological treating tank；
Ozone generator, the ozone generator generate ozone and are supplied to the ozone reaction portion；
Sludge concentration determination unit, the sludge concentration determination unit exist to comprising the water containing Treatment of Sludge in the biological treating tank
The sludge concentration of interior mixed liquor is measured；
Water-quality determination unit, water-quality determination unit measurement mixed liquor, processing water and obtains after carrying out disinfection to processing water
Discharge the respective water quality of water；And
Operation and control device, the operation and control device determine that sludge extracts flow, base based on the sludge concentration of mixed liquor
The product of flow is extracted in the sludge concentration and sludge of mixed liquor to determine the ozone usage amount in the ozone treatment, and based on mixed
It closes liquid, processing water and discharges the water quality data of any one in water or more and extract flow and ozone usage amount to adjust sludge.
2. waste water treatment system as described in claim 1, which is characterized in that
At the time of the sludge concentration determination unit is before extracting water containing Treatment of Sludge from the biological treating tank, sufficiently stirring
After having mixed the mixed liquor in the biological treating tank, the measurement of the sludge concentration of mixed liquor is carried out.
3. waste water treatment system as claimed in claim 1 or 2, which is characterized in that
The operation and control device for based on mixed liquor sludge concentration and sludge extract the product of flow and the ozone that determines
Usage amount determines added ozone amount based on the water quality data of mixed liquor.
4. waste water treatment system as described in any one of claim 1 to 3, which is characterized in that
Have to the ozone inspissator being concentrated by ozone generator ozone generated, the ozone inspissator is to institute
It states ozone reaction portion and the ozone after concentration is provided.
5. waste water treatment system as claimed in claim 4, which is characterized in that
The operation and control device are based on the ozone usage amount determined, to determine the ozone adsorption tower of the ozone inspissator
Pressure and the injection ozone reaction portion ozone flow.
6. such as described in any item waste water treatment systems of claim 1 to 5, which is characterized in that
The ozone reaction portion has and makes the water containing Treatment of Sludge that extracts from the biological treating tank or from the separation of solid and liquid
The piping and be set to the piping and injected to water containing Treatment of Sludge or thickened sludge that the thickened sludge that portion extracts recycles
The injector of ozone.
7. waste water treatment system as claimed in claim 6, which is characterized in that
The ozone reaction portion has the different multiple injectors of nozzle diameter, the operation and control device based on being determined
Sludge extracts flow and ozone usage amount, and used injector is determined from the multiple injector.
8. waste water treatment system as claimed in claims 6 or 7, which is characterized in that
The operation and control device are based on the sludge extraction flow determined and ozone usage amount, to control in the piping
The concentration and flow of the ozone of the water containing Treatment of Sludge of circulation or the flow of thickened sludge and the injection injector, so that
The gas-liquid flow-rate ratio obtained in the injector becomes minimum value.
9. such as described in any item waste water treatment systems of claim 1 to 8, which is characterized in that
Have the data storage device that data used in the operation carried out to the operation and control device are stored,
The data storage device storage includes at least the sludge concentration determination unit, the water-quality determination unit, measurement sludge and takes out
Take the survey of the ozone gas flow meter of the flow of the sludge stream meter of flow and the ozone in the measurement injection ozone reaction portion
Data including definite value.
10. waste water treatment system as claimed in claim 9, which is characterized in that
The data for being stored in the data storage device are collected with online mode.
11. waste water treatment system as claimed in claim 9, which is characterized in that
Part or all for being stored in the data of the data storage device is inputted by operator.
12. such as described in any item waste water treatment systems of claim 9 to 11, which is characterized in that
The operation and control device find out Treatment of Sludge ratio and ozone based on the data got from the data storage device
The convergency value of injection rate, and calculate automatically and meet parameter of the calculated Treatment of Sludge than the convergency value with ozone injection rate.
13. such as described in any item waste water treatment systems of claim 9 to 12, which is characterized in that
Have an experimental data input unit of storage experimental data, the experimental data include sludge concentration and ozone usage amount or
Related data between related data and water quality between reducing sludge volume effect and ozone usage amount or reducing sludge volume effect,
The operation and control device are for the sludge concentration and water quality data that get from the data storage device, referring to being stored in
The experimental data of the experimental data input unit extracts flow and ozone usage amount to adjust sludge.
14. such as described in any item waste water treatment systems of claim 1 to 13, which is characterized in that
The operation and control device adjustment sludge extract flow and ozone usage amount, so that the water quality data of discharge water meets
The water standard of preset discharge water.
15. such as described in any item waste water treatment systems of claim 1 to 14, which is characterized in that
The operation and control device are based on the ozone usage amount determined, to determine to inject ozone into the ozone reaction portion
Time and interval.
16. a kind of wastewater treatment method characterized by comprising
Biologic treatment process, which carries out biological treatment to organic wastewater under aerobic condition, and generates and include
The water containing Treatment of Sludge of activated sludge；
Water containing Treatment of Sludge generated in the biologic treatment process is separated by solid-liquid separation process, the solid-liquid separation process
Thickened sludge and processing water；And
Process is modified, which extracts flow with defined sludge and extract generated in the biologic treatment process containing dirt
In mud processing water or the solid-liquid separation process it is separated go out thickened sludge carry out ozone treatment,
The wastewater treatment method is based on the dirt comprising the mixed liquor including the water containing Treatment of Sludge in the biologic treatment process
Mud concentration determines that sludge extracts flow, extracts the product of flow based on the sludge concentration of mixed liquor and sludge to determine the ozone
Ozone usage amount in processing, and appoint based on mixed liquor, processing water and to handling in the discharge water obtained after water carries out disinfection
More than one water quality data anticipate to adjust sludge and extract flow and ozone usage amount.
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| CN112919751A (en) * | 2019-12-06 | 2021-06-08 | 三菱电机株式会社 | Sludge treatment system and sludge treatment method |
| TWI813437B (en) * | 2022-03-24 | 2023-08-21 | 日商三菱電機股份有限公司 | Water treatment control system and control method of water treatment device |
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| CN113382969B (en) * | 2019-02-15 | 2023-05-05 | 三菱电机株式会社 | Water treatment system and water treatment method |
| CN113772912B (en) * | 2021-11-11 | 2022-03-22 | 临沂朝日电子有限公司 | Environmental protection sludge separation device |
| WO2024100831A1 (en) * | 2022-11-10 | 2024-05-16 | 三菱電機株式会社 | Solubilization apparatus and solubilization method |
| CN115677020B (en) * | 2022-12-07 | 2023-12-05 | 如东深水环境科技有限公司 | Method for treating organic wastewater by combining ozone oxidation and biological activated carbon |
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| JP6877255B2 (en) | 2021-05-26 |
| JP2019000781A (en) | 2019-01-10 |
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