CN103796957A - Organic sewage collection processing device and collection processing method - Google Patents
Organic sewage collection processing device and collection processing method Download PDFInfo
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- CN103796957A CN103796957A CN201280043871.0A CN201280043871A CN103796957A CN 103796957 A CN103796957 A CN 103796957A CN 201280043871 A CN201280043871 A CN 201280043871A CN 103796957 A CN103796957 A CN 103796957A
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- 239000010865 sewage Substances 0.000 title abstract 6
- 238000003672 processing method Methods 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 155
- 239000012528 membrane Substances 0.000 claims abstract description 91
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 44
- 238000000926 separation method Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 238000004064 recycling Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 45
- 238000001914 filtration Methods 0.000 claims description 43
- 238000011084 recovery Methods 0.000 claims description 31
- 238000011001 backwashing Methods 0.000 claims description 25
- 238000000108 ultra-filtration Methods 0.000 claims description 24
- 239000003814 drug Substances 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000007667 floating Methods 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 8
- 238000011033 desalting Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 5
- 230000004907 flux Effects 0.000 abstract description 25
- 230000007774 longterm Effects 0.000 abstract description 7
- 230000004520 agglutination Effects 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 19
- 239000007787 solid Substances 0.000 description 17
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 235000011128 aluminium sulphate Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron trichloride Chemical compound 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/08—Specific process operations in the concentrate stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/26—Further operations combined with membrane separation processes
- B01D2311/2688—Biological processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
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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
- C02F2303/20—Prevention of biofouling
-
- 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
- C02F3/12—Activated sludge processes
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Activated Sludge Processes (AREA)
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
An objective of the present invention is to avoid film flux deterioration in a collection processing assembly and sustain reliable operation over the long term when collecting and recycling biologically processed water of organic sewage which is processed with a filter device and a reverse osmosis membrane separation device. An organic sewage collection processing device biologically processes organic sewage, filters the obtained biologically processed water with a filter device (2), and thereafter desalinates the resulting filtered biologically processed water with a reverse osmosis membrane separation device (4). When supplying the reverse washed sewage of the filter device (2), the chemically washed sewage of the filter device (2), and the concentrated water of the reverse osmosis membrane separation device (4) to a biological processing device (1) for biological processing, the water which is supplied to the biological processing device (1) is processed with an agglutination/solid-liquid separation device (5) before being supplied to the biological processing device (1).
Description
Technical field
The present invention relates to recycling and processing device and the recovery and treatment method of drained organic water, at length, relate to the problem of the membrane flux reduction that does not have recovery and processing system, and can continue recycling and processing device and the recovery and treatment method of the drained organic water of long-term steady running.
Background technology
Make in a large number in the field of water in electronic industry, food, paper pulp industry etc., can discharge a large amount of drained organic waters.General drained organic water of discharging from these fields, by the biological treatment of activated sludge process, carrier organism method, nitrated denitrogenation, anaerobic treatment method etc., the BOD in draining or N composition are decomposed to removal in biology mode, it is down to and releases below benchmark value,, then release then.In recent years, for water conservation, to part or all of biological treatment of water processed and recycling again.
In this biological treatment of water, conventionally contain some thalline that produce by the decomposition of biological treatment.In the time of recycling biological treatment of water, remove these thalline in order to separate, first filter with strainer or with the membrane filter appts that possesses ultrafiltration (UF) film or secondary filter (MF) film, process with activated carbon tower as required afterwards, then, carry out desalting treatment (for example, patent documentation 1) with reverse osmosis (RO) membrane separation unit again.
Fig. 2 is the system diagram that represents the recycling and processing device of drained organic water in the past described above.Drained organic water is processed with biological treatment device 1, part or all of biological treatment of water processed with the order of filtration unit 2, activated carbon tower 3 and RO membrane separation unit 4, and the water that sees through of RO membrane separation unit 4 recycles as recycle-water.The situation of a part for recycling biological treatment of water, the nubbin of biological treatment of water is released.The former water that the condensed water of RO membrane separation unit 4 is recycled to biological treatment device 1 imports side, carries out a biological disposal upon together with drained organic water.
The situation that filtration unit 2 is strainer, (about 1 time/1 day) carries out water back washing normally termly.The situation of UF or MF membrane filter appts, except water back washing, in the time that flux significantly reduces, the medicine that also carries out acid and/or alkali cleans.Also carry out water back washing for activated carbon tower 3.These back washing drainings or medicine clean draining, also import side with the former water that is sent to biological treatment device 1 together with the condensed water of RO membrane separation unit 4, carry out a biological disposal upon together with drained organic water.
[prior art document]
[patent documentation]
[patent documentation 1] Japanese kokai publication hei 6-328070 communique
Summary of the invention
[inventing problem to be solved]
In the recycling and processing device of above-mentioned drained organic water in the past, use in the situation of strainer as filtration unit 2, the membrane flux in the RO of rear class membrane separation unit 4 can reduce.
If filtration unit possesses the membrane filter appts of UF film or MF film, though can prevent that the membrane flux of RO membrane separation unit 4 from reducing, and now has following problem.
,, in UF membrane filter appts or MF membrane filter appts, if continued running, membrane flux can reduce significantly.And from running start through some months, even if carry out medicine cleaning, medicine clean after flux can reply, but thereafter between 1 day～a few days flux can again reduce.Also cannot be returned to the flux that can maintain steady running degree even if finally carry out medicine cleaning.
Problem of the present invention is to provide a kind of recycling and processing device and recovery and treatment method of drained organic water, and it can prevent that in the recovery and processing system of above-mentioned drained organic water in the past, membrane flux reduces, and sustainable long-term steady running.
[solving the method for problem]
The inventor, found that of studying with keen determination in order to solve above-mentioned problem, the reason that in the recovery and processing system of drained organic water, membrane flux reduces is: the gluey organic matter (the Organic material trickleer than thalline) that is included in biological treatment of water and is brought into recovery and processing system producing because of biological treatment with and accumulate intrasystem.
That is, while using strainer as filtration unit 2, this glue organic matter cannot be removed with strainer, makes the RO film of rear class RO membrane separation unit 4 cause flux to reduce because gluey organic matter stops up.The condensed water of this RO membrane separation unit 4, be recycled processing at biological treatment device 1, but the gluey organic matter being concentrated in this condensed water, cannot decompose and remove with biological treatment, and also cannot fully discharge outside system discharge excess sludge in biological treatment system time.Therefore, if continued running, gluey organic matter is accumulated in recovery and processing system, and the problem that RO membrane flux reduces becomes more serious.
While using UF membrane filter appts or MF membrane filter appts as filtration unit 2, the gluey organic matter in biological treatment of water can be removed by these membrane filter apptss, and therefore, the membrane flux of rear class RO membrane separation unit 4 can not reduce.But, can stop up because gluey organic matter causes UF film or MF film, the flux of UF film or MF membrane filter appts is reduced.
Gluey organic matter is concentrated in UF membrane filter appts or MF membrane filter appts, and is comprised in back washing draining or medicine cleaning draining.Thereby, clean draining owing to processing back washing draining or medicine at biological treatment device 1, gluey organic matter is accumulated in recovery and processing system, because of high density the gluey organic matter accumulated cause the membrane flux of UF film or MF film to reduce.
In order to prevent reducing because the gluey organic matter in biological treatment of water causes membrane flux, consider to carry out the pre-treatment of aggegation processing as filtration unit 2.But even if carried out the pre-treatment of aggegation processing, result still has the gluey organic matter of missing and is accumulated in recovery and processing system, thereby cannot fully prevent that membrane flux from reducing.
The inventor finds, so gluey organic matter accumulating in recovery and processing system in biological treatment of water, can be carried out aggegation solid-liquid separation and be prevented by the back washing draining of the condensed water of the RO membrane separation unit to being recycled processing or filtration unit, medicine cleaning draining.Also find by so processing, to promote the water quality of the recycle-water obtaining again.
The present invention completes according to above-mentioned knowledge and discovery, is below its main idea.
[1] recycling and processing device for drained organic water,
It has:
The biological treating equipment that drained organic water is carried out a biological disposal upon,
Comprise and import from the filtration unit of at least a portion of the biological treatment of water of this biological treating equipment and import the recycling equipment of the reverse osmosis membrane tripping device of the filtered water of this filtration unit, and
The medicine of the back washing draining of this filtration unit, this filtration unit is cleaned in the condensed water of draining and this reverse osmosis membrane tripping device at least a kind and sends the former water of above-mentioned biological treating equipment back to and import the loopback equipment of side,
It is characterized in that,
It has at least a portion to importing the water of side loopback by from this loopback equipment to the former water of above-mentioned biological treating equipment and carries out carrying out after aggegation processing again aggegation treatment facility and the solid-liquid separating equipment of solid-liquid separation, and the processing water of this solid-liquid separating equipment is sent to above-mentioned biological treating equipment.
[2] recycling and processing device of the drained organic water as described in [1], wherein, it has the activated carbon tower of the filtered water that is imported into above-mentioned filtration unit, and the processing water of this activated carbon tower is imported into above-mentioned reverse osmosis membrane tripping device.
[3] recycling and processing device of the drained organic water as described in [1] or [2], wherein, above-mentioned filtration unit is ultrafiltration membrane filter device or secondary filter membrane filter appts.
[4] recycling and processing device of the drained organic water as described in any one in [1] to [3], wherein, above-mentioned solid-liquid separating equipment is pressurization floating tripping device or precipitation treatment device.
[5] recovery and treatment method for drained organic water,
It has:
The biologic treatment process that drained organic water is carried out a biological disposal upon,
After being filtered by filtration unit, at least a portion of biological treatment of water from this biologic treatment process carries out again the recycling operation of desalting treatment by reverse osmosis membrane tripping device, and
By at least a kind of loopback operation that returns to above-mentioned biologic treatment process and carry out a biological disposal upon in the condensed water of the medicine cleaning draining of the back washing draining of this filtration unit, this filtration unit and this reverse osmosis membrane tripping device,
It is characterized in that,
In this loopback operation, at least a portion of the water that is recycled to above-mentioned biologic treatment process is carried out carrying out solid-liquid separation after aggegation processing again, then the processing water obtaining is recycled to above-mentioned biologic treatment process.
[6] recovery and treatment method of the drained organic water as described in [5], wherein, after the filtered water of above-mentioned filtration unit is processed by activated carbon tower, then carries out desalting treatment by above-mentioned reverse osmosis membrane tripping device.
[7] recovery and treatment method of the drained organic water as described in [5] or [6], wherein, above-mentioned filtration unit is ultrafiltration membrane filter device or secondary filter membrane filter appts.
[8] recovery and treatment method of the drained organic water as described in any one in [5] to [7], wherein, above-mentioned solid-liquid separation is that pressurization floating separates or precipitation process.
[invention effect]
According to the present invention, can prevent the reduction of the membrane flux in the recovery and processing system of drained organic water being carried out a biological disposal upon and biological treatment of water is processed and reclaimed, and can continue long-term steady running.The present invention, can reach following i)-effect iv).
I) when filtration unit is UF membrane filter appts or MF membrane filter appts, can maintain higher membrane flux, and medicine cleaning frequency is reduced.
Ii) reduce because of medicine cleaning frequency, the running efficiency of lifting gear, and reduce medicine and clean cost.
Iii), when filtration unit is UF membrane filter appts or MF membrane filter appts, can prevent the obstruction of this membrane filter appts.When filtration unit is strainer, in the RO of rear class membrane separation unit, can prevent the obstruction of film.Thereby, can reduce running pressure (water flowing pressure), can significantly reduce expenditure on power (electricity charge).
Iv) reduce the concentration of the gluey organic matter in the water in recovery and processing system.Thus, the water quality of recycle-water (RO membrane separation unit pass through water) promotes, and particularly can significantly reduce TOC concentration, can significantly expand the purposes of recycle-water.
Accompanying drawing explanation
Fig. 1 is the system diagram that represents an example of the embodiment of the recycling and processing device of drained organic water of the present invention.
Fig. 2 represents the system diagram of the recycling and processing device of drained organic water in the past.
Embodiment
Describe the recycling and processing device of drained organic water of the present invention and the embodiment of recovery and treatment method in detail below with reference to accompanying drawing.
Fig. 1 is the system diagram that represents the embodiment of the recycling and processing device of drained organic water of the present invention, it is provided with: the back washing draining to filtration unit 2 and medicine clean the aggegation equipment for separating liquid from solid 5 that draining, the back washing draining of activated carbon tower 3 and the condensed water of RO membrane separation unit 4 are processed, recycling and processing device at drained organic water in the past represented from Fig. 2 aspect this is different, and other aspects are identical formation.In Fig. 1, the parts that reach identical function for parts that can be represented with Fig. 2 give same-sign.
Handled drained organic water in the present invention, the TOC(total organic carbon of discharging at semi-conductor, liquid crystal, other electronic industry fields, food, paper pulp industrial field etc.) draining of about 1～500mg/L, so first drained organic water is imported into biological treatment device 1, carries out a biological disposal upon by activated sludge process, carrier organism method, nitrated denitrogenation, anaerobic treatment method etc.The water quality of this biological treatment of water is generally TOC0.2～10mg/L, SS(suspended substance) 1～400mg/L left and right.
Part or all of this biological treatment of water is imported into filtration unit 2 and removes the SS(suspended substance of thalline etc.).Recycling biological treatment of water a part of time, nubbin is released.
Filtration unit 2 is to use strainer or UF film or MF membrane filter appts.In the device of Fig. 1, the processing water of filtration unit 2, after activated carbon tower 3 is processed, then carries out desalting treatment at RO membrane separation unit 4.This activated carbon tower 3 is not necessity, can omit this operation yet the processing water of filtration unit 2 is directly imported to RO membrane separation unit 4.
The water that sees through of RO membrane separation unit 4 is taken out as recycle-water, recycle in each field of employment.The condensed water of RO membrane separation unit 4, after being sent to aggegation equipment for separating liquid from solid 5 described later and processing, carries out circular treatment at biological treatment device 1.The water rate of recovery in this RO membrane separation unit 4 is preferably 50～90% left and right.
Use strainer as the situation of filtration unit 2, strainer is (for example, 1 time on the 0.5th～2 left and right) termly, or pressure reduction is while having rising trend, carries out water back washing.In the situation that uses UF film or MF membrane filter appts as filtration unit, except above-mentioned water back washing, (for example, 1 time on the 7th～30 left and right) termly, or flux is while showing reduction, uses the medicine of acid and/or alkali to clean.The draining of these water back washings and medicine clean draining, after being sent to aggegation equipment for separating liquid from solid 5 described later and processing, then deliver to biological treatment device 1 and carry out a biological disposal upon.
Also identical with strainer for activated carbon tower 3, (for example, 1 time on the 1st～2 left and right) termly, or pressure reduction is while having rising trend, carries out water back washing.The water vent of the water back washing of this activated carbon tower 3 is sent to aggegation equipment for separating liquid from solid 5 described later process after, then deliver to biological treatment device 1 and process.
Below, back washing draining, medicine cleaning draining, the back washing draining of activated carbon tower 3 and the condensed water of RO membrane separation unit 4 of the filtration unit 2 that is imported into aggegation equipment for separating liquid from solid 5 are called to " loopback water ".
In the present invention, for the kind of the type (model) of aggegation equipment for separating liquid from solid 5 or the agglutinant of use, be not particularly limited.Be imported in the loopback water of aggegation equipment for separating liquid from solid 5, be included in accumulating in recovery and processing system and can cause the gluey organic matter having problems, therefore, for this glue organic matter is carried out to aggegation, solid-liquid separation, preferably using the aluminium such as polymerize aluminum chloride (PAC), Tai-Ace S 150 (aluminium sulfate) as agglutinant is agglutinant; Or the iron such as iron trichloride, bodied ferric sulfate is one kind or two or more in the inorganic agglutinant of agglutinant etc.
The addition of inorganic agglutinant, conventionally, is preferably 50～500mg/L left and right.
As aggegation equipment for separating liquid from solid 5, can use general device.For fear of the problem that causes film to stop up because of gluey organic matter, as equipment for separating liquid from solid, preferably do not use the equipment for separating liquid from solid of film, but use pressurization floating tripping device or precipitation treatment device.As aggegation equipment for separating liquid from solid 5, for example, can adopt: 1) aggegation treatment trough and settling bath; 2) aggegation treatment trough and pressurization floating separator tank; 3) coagulation sedimentation groove; 4) aggegation pressurization floating separator tank; Deng.
At aggegation equipment for separating liquid from solid 5, loopback water is carried out to the solid-liquid separation water that aggegation solid-liquid separation obtains, comprise hardly the gluey organic matter of the reason that becomes membrane flux reduction.By the processing water of this aggegation equipment for separating liquid from solid 5 is delivered to biological treatment device 1, can prevent that gluey organic matter from accumulating in system, prevent the reduction of membrane flux in recovery and processing system, and can continue long-term steady running.
Fig. 1 represents an example of embodiments of the present invention, only otherwise exceed purport of the present invention, is not limited in figure represented.
As mentioned above, also can omit activated carbon tower.2 grades of above RO membrane separation units also can be in series set.Treatment unit beyond device shown in Fig. 1, for example, also can arrange UV irradiation equipment, heat exchanger, de-gassing vessel etc.Also can be used for flowing into water and be adjusted to the pH adjustment equipment etc. of suitable pH condition in the inlet side setting of each device.
[embodiment]
Below enumerate embodiment and comparative example the present invention is more specifically described.
[embodiment 1]
Using food be drained organic water (TOC:100mg/L) as former water, carry out recovery (the former water yield: 15m of water with the device representing in Fig. 1
3/ hour (hr), the recovery water yield: 10m
3/ hour).
As shown below, the water quality that is imported into the biological treatment of water of the filtration unit 2 of recovery and processing system is the specification of each device, TOC:10mg/L, SS:80mg/L.
Biological treatment device 1: thermopnore carrier organism treatment unit (バ イ オ マ イ テ ィ SK, Biomighty SK), Kurita Water Industries Ltd manufactures.
Filtration unit 2:UF membrane filter appts " PF-15G " (working pressure: 0.1MPa), Kurita Water Industries Ltd manufactures.
Activated carbon tower 3: fixed-bed type, water flowing SV=20hr
-1
RO membrane separation unit 4: ultralow pressure RO membrane separation unit " KROA-2032 " (the water rate of recovery: 66%), Kurita Water Industries Ltd manufactures.
Aggegation equipment for separating liquid from solid 5: the aggegation treatment trough of PAC and the pressurization floating upward groove of importing aggegation processing water that add 300mg/L as inorganic agglutinant
In UF membrane filter appts 2 and activated carbon tower 3, carry out water back washing with the frequency of 1～2 hour 1 time (UF membrane filter appts) and 1 time on the 1st～2 (activated carbon tower) respectively, carry out aggegation, solid-liquid separation processing by delivering to aggegation equipment for separating liquid from solid 5 together with the condensed water of back washing draining and RO membrane separation unit 4,, then deliver to biological treatment device 1 then.Be sent to the processing water yield average out to 17m of the aggegation equipment for separating liquid from solid 5 of this biological treatment device 1
3/ hour.
Its result, starts, about 1 month, can days (day) carry out steady running take the membrane flux of UF membrane filter appts 2 as 2m/ from running.Again, the TOC concentration of the recycle-water that obtains (RO membrane separation unit 4 see through water) is 0.2～0.5mg/L, has significantly good water quality.
[comparative example 1]
In embodiment 1, aggegation equipment for separating liquid from solid 5 is not set, except the condensed water of the back washing draining of UF membrane filter appts 2 and activated carbon tower 3 and RO membrane separation unit 4 is directly delivered to biological treatment device 1, other carry out identical processing.Its result, starts approximately 1 month from running, and the membrane flux of UF membrane filter appts 2 is 1m/ days (day), roughly stable, but has on long terms the tendency of reduction.Again, the TOC concentration of the recycle-water of gained (RO membrane separation unit 4 see through water) is 1.0～3.0mg/L, poorer than embodiment 1.
Learnt by above result, according to the present invention, can make the recycling and processing device of drained organic water continue long-term steady running.
Use specified scheme to have been described in detail the present invention, but to those skilled in the art, only otherwise depart from the intent of the present invention and scope can be carried out various changes.
Again, the application proposes according to the Japanese patent application (Patent 2011-225993) that on October 13rd, 2011 proposes, and now by reference it is all incorporated herein.
Claims (10)
1. a recycling and processing device for drained organic water,
It has:
The biological treating equipment that drained organic water is carried out a biological disposal upon,
Comprise and import from the filtration unit of at least a portion of the biological treatment of water of this biological treating equipment and import the recycling equipment of the reverse osmosis membrane tripping device of the filtered water of this filtration unit, and
The medicine of the back washing draining of this filtration unit, this filtration unit is cleaned in the condensed water of draining and this reverse osmosis membrane tripping device at least a kind and sends the former water of above-mentioned biological treating equipment back to and import the loopback equipment of side,
It is characterized in that,
It has at least a portion to importing the water of side loopback by from this loopback equipment to the former water of above-mentioned biological treating equipment and carries out carrying out after aggegation processing again aggegation treatment facility and the solid-liquid separating equipment of solid-liquid separation, and the processing water of this solid-liquid separating equipment is sent to above-mentioned biological treating equipment.
2. the recycling and processing device of drained organic water as claimed in claim 1, wherein, it has the activated carbon tower of the filtered water that is imported into above-mentioned filtration unit, and the processing water of this activated carbon tower is imported into above-mentioned reverse osmosis membrane tripping device.
3. the recycling and processing device of drained organic water as claimed in claim 2, wherein, the back washing draining of this activated carbon tower is sent to above-mentioned aggegation treatment facility.
4. the recycling and processing device of drained organic water as claimed in claim 1, wherein, above-mentioned filtration unit is ultrafiltration membrane filter device or secondary filter membrane filter appts.
5. the recycling and processing device of the drained organic water as described in any one in claim 1 to 4, wherein, above-mentioned solid-liquid separating equipment is pressurization floating tripping device or precipitation treatment device.
6. a recovery and treatment method for drained organic water,
It has:
The biologic treatment process that drained organic water is carried out a biological disposal upon,
After being filtered by filtration unit, at least a portion of biological treatment of water from this biologic treatment process carries out again the recycling operation of desalting treatment by reverse osmosis membrane tripping device, and
By at least a kind of loopback operation that returns to above-mentioned biologic treatment process and carry out a biological disposal upon in the condensed water of the medicine cleaning draining of the back washing draining of this filtration unit, this filtration unit and this reverse osmosis membrane tripping device,
It is characterized in that,
In this loopback operation, at least a portion of the water that is recycled to above-mentioned biologic treatment process is carried out carrying out solid-liquid separation after aggegation processing again, then the processing water obtaining is recycled to above-mentioned biologic treatment process.
7. the recovery and treatment method of drained organic water as claimed in claim 6, wherein, after the filtered water of above-mentioned filtration unit is processed by activated carbon tower, then carries out desalting treatment by above-mentioned reverse osmosis membrane tripping device.
8. the recovery and treatment method of drained organic water as claimed in claim 7, wherein, delivers to above-mentioned aggegation treatment facility by the back washing draining of this activated carbon tower.
9. the recovery and treatment method of drained organic water as claimed in claim 6, wherein, above-mentioned filtration unit is ultrafiltration membrane filter device or secondary filter membrane filter appts.
10. the recovery and treatment method of the drained organic water as described in any one in claim 6 to 9, wherein, above-mentioned solid-liquid separation is that pressurization floating separates or precipitation process.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011225993A JP5879901B2 (en) | 2011-10-13 | 2011-10-13 | Organic wastewater recovery processing apparatus and recovery processing method |
| JP2011-225993 | 2011-10-13 | ||
| PCT/JP2012/076192 WO2013054810A1 (en) | 2011-10-13 | 2012-10-10 | Organic sewage collection processing device and collection processing method |
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| CN103796957A true CN103796957A (en) | 2014-05-14 |
| CN103796957B CN103796957B (en) | 2016-07-06 |
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| JP (1) | JP5879901B2 (en) |
| KR (1) | KR101985037B1 (en) |
| CN (1) | CN103796957B (en) |
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| CN106630503A (en) * | 2017-03-24 | 2017-05-10 | 苏州林信源自动化科技有限公司 | Biological treatment apparatus for water |
| CN112028378A (en) * | 2019-06-04 | 2020-12-04 | 伟泰科技（无锡）有限公司 | Integrated treatment system for semiconductor industrial wastewater |
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| CN103332827B (en) * | 2013-06-06 | 2015-05-06 | 宁夏宝塔石化集团有限公司 | Desalination and organic matter degradation recycling technology for RO (reverse osmosis) concentrated water |
| CN104418472A (en) * | 2013-09-11 | 2015-03-18 | 三菱丽阳株式会社 | Treatment device and treatment method of wastewater containing organic matters |
| JP6443016B2 (en) * | 2014-12-02 | 2018-12-26 | 三浦工業株式会社 | Water treatment system |
| JP2017109162A (en) * | 2015-12-16 | 2017-06-22 | 株式会社オメガ | Water treatment method |
| JP6830811B2 (en) * | 2016-12-27 | 2021-02-17 | オルガノ株式会社 | Treatment method and treatment equipment for thickening polysaccharide-containing water |
| EP3372302B1 (en) * | 2017-03-06 | 2022-12-21 | B. Braun Avitum AG | Water treatment method |
| JP7224753B2 (en) * | 2017-05-30 | 2023-02-20 | オルガノ株式会社 | Cohesive membrane filtration method and cohesive membrane filtration device |
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| TW201321309A (en) | 2013-06-01 |
| TWI545087B (en) | 2016-08-11 |
| WO2013054810A1 (en) | 2013-04-18 |
| CN103796957B (en) | 2016-07-06 |
| KR101985037B1 (en) | 2019-05-31 |
| KR20140077885A (en) | 2014-06-24 |
| JP5879901B2 (en) | 2016-03-08 |
| JP2013085983A (en) | 2013-05-13 |
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