CN107324586A - Halo aldehydes disinfection by-products formation potential removal device and method - Google Patents
Halo aldehydes disinfection by-products formation potential removal device and method Download PDFInfo
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- CN107324586A CN107324586A CN201710551826.0A CN201710551826A CN107324586A CN 107324586 A CN107324586 A CN 107324586A CN 201710551826 A CN201710551826 A CN 201710551826A CN 107324586 A CN107324586 A CN 107324586A
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- water
- disinfection
- formation potential
- filter tank
- products formation
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- -1 Halo aldehydes Chemical class 0.000 title claims abstract description 67
- 239000006227 byproduct Substances 0.000 title claims abstract description 53
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 53
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 140
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000005273 aeration Methods 0.000 claims abstract description 56
- 238000002156 mixing Methods 0.000 claims abstract description 53
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 47
- 230000003647 oxidation Effects 0.000 claims abstract description 45
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 31
- 239000004155 Chlorine dioxide Substances 0.000 claims abstract description 30
- 235000019398 chlorine dioxide Nutrition 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 239000000945 filler Substances 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims abstract description 18
- 230000015556 catabolic process Effects 0.000 claims abstract description 14
- 238000006731 degradation reaction Methods 0.000 claims abstract description 14
- 244000005700 microbiome Species 0.000 claims abstract description 10
- 239000003814 drug Substances 0.000 claims description 29
- 239000007788 liquid Substances 0.000 claims description 21
- 238000011001 backwashing Methods 0.000 claims description 20
- 230000002262 irrigation Effects 0.000 claims description 20
- 238000003973 irrigation Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 16
- 239000002243 precursor Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical class 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 150000001299 aldehydes Chemical class 0.000 claims 1
- 230000000295 complement effect Effects 0.000 abstract description 4
- 239000005416 organic matter Substances 0.000 description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 238000005660 chlorination reaction Methods 0.000 description 6
- 239000003651 drinking water Substances 0.000 description 5
- 235000020188 drinking water Nutrition 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 241000195493 Cryptophyta Species 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- OQVYMXCRDHDTTH-UHFFFAOYSA-N 4-(diethoxyphosphorylmethyl)-2-[4-(diethoxyphosphorylmethyl)pyridin-2-yl]pyridine Chemical compound CCOP(=O)(OCC)CC1=CC=NC(C=2N=CC=C(CP(=O)(OCC)OCC)C=2)=C1 OQVYMXCRDHDTTH-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003864 humus Substances 0.000 description 2
- 229920000344 molecularly imprinted polymer Polymers 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
-
- 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
- C02F2101/36—Organic compounds containing halogen
Landscapes
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of halo aldehydes disinfection by-products formation potential removal device and method, the device includes：For mixing potassium permanganate, chlorine dioxide and pending raw water, compound pre-oxidation is carried out using potassium permanganate and chlorine dioxide to raw water, remove the dosing mixing pit reaction system of a part of halo aldehydes disinfection by-products formation potential in the raw water, and the aeration biological filter chamber treatment system of the halo aldehydes disinfection by-products formation potential in the water after compound pre-oxidation is further removed for the suction-operated using filler and the degradation of microorganism, the dosing mixing pit reaction system is connected with the aeration biological filter chamber treatment system by pipeline.The present invention technique component characteristics of compact layout, floor space it is few, and between each technique it is mutually coordinated, have complementary functions, effectively remove halo aldehydes disinfection by-products formation potential, so as to reduce halo aldehydes DBPs risk of exceeding criterion.
Description
Technical field
Removed the invention belongs to technical field of drinking water treatment, more particularly to a kind of halo aldehydes disinfection by-products formation potential
Device and method.
Background technology
Chlorine system disinfectant is still use ratio highest disinfectant in current drinking water treatment, and chlorination is ensureing drinking water
While microbial safety, it can be reacted with the organic matter in drinking water, generate a variety of Chlorination Disinfection By-products.Send out at present
Existing Chlorination Disinfection By-products have more than 700 kinds, and health is constituted and seriously endangered.Halo aldehydes DBPs in drinking water
Content is only second to haloform, halogen acetic acid, is the third-largest class DBPs, and halogen acetaldehyde to the harmfulness of human body considerably beyond
Haloform and halogen acetic acid.
With the economic rapid growth developed rapidly with population, substantial amounts of sanitary sewage, the waste water such as industry, cultivation without
Processing is entered directly into water source reservoir, is directly resulted in each water source reservoir and is substantially at eutrophic state, DBPs precursor
The increase of thing content, causes halo aldehydes DBPs to have higher risk of exceeding criterion.
Oxidation is, come oxidation Decomposition or conversion water pollutant, to weaken simultaneously using the higher oxidant of oxidation potential
To the adverse effect of conventional treatment process, strengthen the decontamination efficiency of conventional treatment process.Oxidation is in water removal is gone simultaneously
Organic matter and control Chlorination Disinfection By-products in terms of also have certain application study.
BAF combines filling adsorption retention and microbial degradation dual-use function, can effectively go in water removal
The micro polluting substance, the biological stability increased water quality such as organic matter, ammonia nitrogen and disinfection by-products formation potential.
But, oxidation is not enough to organic matter permineralization due to the oxidability of oxidant, will can only be divided greatly
Sub- oxidation operation is decomposed into small organic molecule, and these small organic molecules are likely to halo aldehydes DBPs
Precursor, therefore preoxidation technique, which is used alone, may increase the generation gesture of halo aldehydes DBPs.
If BAF is directly as the pretreating process of raw water, larger particles impurity, suspension in raw water
Filler may be blocked, declines BAF discharge capacity, so as to reduce the work period in filter tank, increase the recoil in filter tank
Frequency is washed, so as to increase the operating cost of water factory.
The content of the invention
, will it is a primary object of the present invention to provide a kind of halo aldehydes disinfection by-products formation potential removal device and method
Oxidation is combined with biological pre-oxidation, is more beneficial for removing the precursor of halo aldehydes DBPs, effectively control
Halo aldehydes risk.
To achieve the above object, a kind of halo aldehydes disinfection by-products formation potential removal device that the present invention is provided, including：
For mixing potassium permanganate, chlorine dioxide and pending raw water, raw water is carried out using potassium permanganate and chlorine dioxide compound pre-
Oxidation, removes the dosing mixing pit reaction system of a part of halo aldehydes disinfection by-products formation potential in the raw water, and
The halo in the water after compound pre-oxidation is further removed for the suction-operated using filler and the degradation of microorganism
The aeration biological filter chamber treatment system of aldehydes disinfection by-products formation potential, the dosing mixing pit reaction system is given birth to the aeration
Thing filter tank processing system is connected by pipeline.
Wherein, the halo aldehydes disinfection by-products formation potential removal device also includes：For being filtered to the aeration and biological
The air-water backwashing system that filter tank in the processing system of pond is backwashed, the air-water backwashing system and the aeration and biological
Filter tank processing system is connected by pipeline.
Wherein, the dosing mixing pit reaction system includes：Dosing mixing pit, potassium permanganate medicine liquid irrigation, chlorine dioxide medicine
Liquid is filled, magnetic drive pump, and the agitator being placed in the dosing mixing pit；Wherein：
The dosing mixing pit is provided with water inlet and delivery port, delivery port and the aeration and biological of the dosing mixing pit
Filter tank processing system is connected by pipeline；
The potassium permanganate medicine liquid irrigation is connected by chemical feed pipe with the water inlet of the dosing mixing pit, the chlorine dioxide
Medicine liquid irrigation is connected by chemical feed pipe with the chemical feed pipe of the potassium permanganate medicine liquid irrigation, and together connects entering for the dosing mixing pit
The mouth of a river；
The chemical feed pipe of the chemical feed pipe of the potassium permanganate medicine liquid irrigation and the chlorine dioxide medicine liquid irrigation goes out with magnetic drive pump
Water pipe is connected, and raw water is well mixed with medicament in pipeline section, and is entered by the water inlet in dosing mixing pit.
Wherein, each chemical feed pipe is provided with diaphragm metering pump and valve.
Wherein, the water inlet is arranged on the upper end of the dosing mixing pit side, and the delivery port is arranged on described add
The bottom of the water inlet opposite side of medicine mixing pit.
Wherein, the aeration biological filter chamber treatment system includes：Water inlet pipe, outlet pipe, discharge bay, filter tank, filler, overflow
Pipe, wherein：
The water inlet pipe, outlet pipe and overflow pipe are separately positioned on the filter tank, and the water inlet pipe is located at the filter tank
Side upper end, the outlet pipe be located at the filter tank bottom, the overflow pipe be located at the filter tank opposite side upper end；
The filler is arranged in the filter tank；
The delivery port of the dosing mixing pit is connected with the water inlet pipe on the filter tank；
The discharge bay is connected with the outlet pipe on the filter tank.
Wherein, the aeration biological filter chamber treatment system also includes：Aeration tube and it is arranged on the aeration tube end
Aeration head, the aeration tube is located at one end of aeration head and inserted in the filter tank, and the aeration head is located under the filler；
The other end of the aeration tube connects the air-water backwashing system.
Wherein, the air-water backwashing system includes：Air compressor, backwash pump, backwash water pipe, air compression
Machine, backwash tracheae, wherein：
The backwash water pipe is connected between the bottom in the discharge bay and the filter tank；
The backwash tracheae is connected between the bottom in the air compressor and the filter tank；
The other end of the air compressor also with the aeration tube is connected, and the air compressor passes through the backwash
Tracheae and the aeration tube blast air to the filter tank and carry out air purge；
The backwash pump is connected on the backwash water pipe, and the backwash pump draws water from discharge bay, and by
Backwash water pipe feeding filter tank is washed, and the water after backwash is drained by the overflow pipe.
The present invention also proposes a kind of halo aldehydes disinfection by-products formation potential minimizing technology, comprises the following steps：
Raw water is obtained, the raw water, potassium permanganate and chlorine dioxide are put into dosing mixing pit reaction system, is added described
Compound pre-oxidation is carried out using potassium permanganate and chlorine dioxide to raw water in medicine mixing pit reaction system, removed in the raw water
A part of halo aldehydes disinfection by-products formation potential；
Water after compound pre-oxidation is put into aeration biological filter chamber treatment system, in the aeration biological filter chamber treatment system
In, the halogenated aldehyde in the water after compound pre-oxidation is further removed using the suction-operated of filler and the degradation of microorganism
Class disinfection by-products formation potential.
Wherein, the halo aldehydes disinfection by-products formation potential minimizing technology also includes：
The filter tank in the aeration biological filter chamber treatment system is backwashed by air-water backwashing system.
The beneficial effects of the invention are as follows：The halo aldehydes DBPs that a kind of chemistry is combined with Biological Pretreatment is provided
Precursor removal device, compound pre-oxidation is carried out using potassium permanganate and chlorine dioxide, and potassium permanganate is used as a kind of traditional oxygen
Agent is widely used in clean water treatment, and on the one hand it can aoxidize the organic matter in water, by larger molecular organicses oxidation point
Solution into the small organic molecule for being easy to microbial degradation, while the nascent state manganese dioxide of potassium permanganate oxidation generation have it is huge
Specific surface area, have very strong suction-operated, larger Molecularly Imprinted Polymer can be formed in water, and play between colloidal solid frame
Bridge is acted on, and is combined together water-borne glue body, plays enhanced coagulation effect so that a part of halo aldehydes DBPs precursor
Thing is removed in dosing mixing pit.Chlorine dioxide is as pre-oxidation agent, compared with liquid chlorine, and it has with organic pollution reaction
High selectivity, and it is main based on oxidation reaction with organic matter reaction, do not occur chlorination reaction with organic humus substantially, because
This can reduce the generation of halo aldehydes DBPs.In addition, chlorine dioxide can effectively control the numerous of the aquatiles such as algae
Grow, promote colloid and algae de- steady, flco is had more preferable settleability, these are all conducive to halo aldehydes DBPs precursor
The removal of thing.Water after oxidation enters back into BAF and is further processed, and utilizes the suction of filler
The degradation of attached effect and microorganism makes halo aldehydes disinfection by-products formation potential further remove.Technique component arrangement is tight
Gather, floor space it is few, and between each technique it is mutually coordinated, have complementary functions, pre-oxidation process eliminates larger in raw water
Graininess impurity, suspension, are that BAF creates good working environment, while BAF will pre-oxidize work
The small molecule halo aldehydes disinfection by-products formation potential that skill can not be removed further is removed, so as to reduce halo aldehydes sterilization by-product
Thing risk of exceeding criterion.
Brief description of the drawings
Fig. 1 is halo aldehydes disinfection by-products formation potential removal device structural representation of the present invention.
Drawing reference numeral：
(1) it is water inlet, (2) are delivery port, and (3) are chemical feed pipe, and (4) are agitator, and (5) are dosing mixing pit, and (6) are
Potassium permanganate medicine liquid irrigation, (7) are chlorine dioxide medicine liquid irrigation, and (8) are magnetic drive pump, and (9) are diaphragm metering pump, and (10) are water inlet
Pipe, (11) are outlet pipe, and (12) are discharge bay, and (13) are filter tank, and (14) are filler, and (15) are overflow pipe, and (16) are aeration head,
(17) it is aeration tube, (18) are backwash pump, and (19) are backwash water pipe, and (20) are air compressor, and (21) are backwash
Tracheae.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention is considered：Oxidation is not enough to organic matter permineralization due to the oxidability of oxidant, only
Can be small organic molecule by larger molecular organicses oxidation Decomposition, and these small organic molecules are likely to the sterilization of halo aldehydes
The precursor of accessory substance, therefore preoxidation technique, which is used alone, may increase the generation gesture of halo aldehydes DBPs.
If BAF is directly as the pretreating process of raw water, larger particles impurity, suspension in raw water
Filler may be blocked, declines BAF discharge capacity, so as to reduce the work period in filter tank, increase the recoil in filter tank
Frequency is washed, so as to increase the operating cost of water factory.
Therefore, oxidation is combined with biological pre-oxidation, is more beneficial for removing halo aldehydes DBPs
Precursor, effectively control halo aldehydes risk.
Specifically, the present invention proposes a kind of halo aldehydes disinfection by-products formation potential removal device, including：For mixing height
Potassium manganate, chlorine dioxide and pending raw water, carry out compound pre-oxidation using potassium permanganate and chlorine dioxide to raw water, remove institute
The dosing mixing pit reaction system of a part of halo aldehydes disinfection by-products formation potential in raw water is stated, and for utilizing filler
Suction-operated and the halo aldehydes that further removes in the water after compound pre-oxidation of degradation of microorganism sterilize by-product
The aeration biological filter chamber treatment system of thing precursor, the dosing mixing pit reaction system and the BAF processing system
System is connected by pipeline.
Thus, the technique being combined by using oxidation with biological treatment, gives full play to the peculiar work(of each technique
Can, at the same it is mutually coordinated between technique, have complementary functions, pre-oxidation process eliminate graininess impurity larger in raw water, suspension
Thing, is that BAF creates good working environment, while what BAF can not remove pre-oxidation process
Small molecule halo aldehydes disinfection by-products formation potential is further removed, so as to reduce halo aldehydes DBPs risk of exceeding criterion.
Further, the halo aldehydes disinfection by-products formation potential removal device also includes：For being given birth to the aeration
The air-water backwashing system that filter tank in the processing system of thing filter tank is backwashed, the air-water backwashing system and the aeration
Biological filter chamber treatment system is connected by pipeline.
Air-water backwashing system is mainly eluted the organic matter retained in filtrate by air-water backwashing, and with anti-
Rinse current to drain, so as to reach the purpose of filtering layer regeneration.
Specifically, as shown in figure 1, the dosing mixing pit reaction system includes：Water inlet (1), delivery port (2), dosing
Manage (3), agitator (4), dosing mixing pit (5), potassium permanganate medicine liquid irrigation (6), chlorine dioxide medicine liquid irrigation (7), magnetic drive pump (8),
Diaphragm metering pump (9), wherein：
Water inlet (1) is provided with the upper lateral part of dosing mixing pit (5) one, chemical feed pipe (3) is connected with magnetic drive pump (8) outlet pipe
Connect, raw water is well mixed with medicament in pipeline section, and entered by water inlet (1) in dosing mixing pit (5)；
Agitator (4) is provided with dosing mixing pit (5), raw water is further fully reacted with medicament, in dosing mixing
The relative side bottom of pond (5) water inlet (1) is provided with delivery port (2), and well mixed water sample flows out from delivery port (2), in height
The decoction of concentration needed for being prepared in potassium manganate medicine liquid irrigation (6) and chlorine dioxide medicine liquid irrigation (7), and by dosing diaphragm metering pump
(9) medicament is put into magnetic drive pump (8) outlet pipe；Dosing mixing pit reaction system is used to being sufficiently mixed medicament and raw water,
Reaction is complete, and larger molecular organicses are broken into small organic molecule.
Aeration biological filter chamber treatment system include water inlet pipe (10), outlet pipe (11), discharge bay (12), filter tank (13), fill out
Expect (14), overflow pipe (15), aeration head (16), aeration tube (17), delivery port (2) and the aeration and biological of dosing mixing pit (5) are filtered
The water inlet pipe (10) in pond (13) is connected, and diaphragm metering pump (9) gives birth to the complete water sample feeding aeration of reaction in mixing pit (5)
In thing filter tank (13), the filler (14) used in filter tank (13) is haydite, and the water sample after being handled through filtering ponds (13) is by outlet pipe
(11) be drained into discharge bay (12), aeration head (16) be placed in haydite layer lower section 0.6m at (value can be according to actual conditions
Selection is set), air is blown into filter tank (13) by air compressor (20) by aeration tube (17)；BAF processing
System mainly uses the degradation of the absorption of haydite and the microorganism being attached on haydite, by having for being remained in front and continued technique
Machine thing is further removed.
Air-water backwashing system includes backwash pump (18), backwash water pipe (19), air compressor (20), backwash
Tracheae (21), backwash water pipe (19) and backwash tracheae (21) are all arranged on filter tank (13) bottom, and air compressor (20) leads to
Cross backwash tracheae (21) and aeration tube (17) and blast air to filter tank (13) and carry out air purge, backwash pump (18) is from discharge bay
(12) draw water, and washed by backwash water pipe (19) feeding filter tank (13), the water after backwash is drained by overflow pipe (15)；
Air-water backwashing system is mainly eluted the organic matter retained in filtrate by air-water backwashing, and with backwash current
Drain, so as to reach the purpose of filtering layer regeneration.
The principle of halo aldehydes disinfection by-products formation potential removal device of the present invention detailed below is as follows：
Raw water into water factory is extracted into dosing mixing pit (5) by magnetic drive pump (8), while opening dosing diaphragm metering pump
(9) permanganic acid for, making it extract the required concentration prepared from potassium permanganate medicine liquid irrigation (6) and chlorine dioxide medicine liquid irrigation (7)
Potassium, ClO 2 solution are sent in magnetic drive pump (8) outlet pipe, raw water is sufficiently mixed with potassium permanganate, ClO 2 solution,
Under the impetus of magnetic drive pump (8), mixed water sample is entered in dosing mixing pit (5), in order that water sample it is well mixed and
Reaction is complete, and hydraulic detention time of the water sample in dosing mixing pit (5) is at least 30 minutes, is stirred while opening agitator (4)
Mix, the water sample after pre-oxidation treatment is sent to BAF (13) by diaphragm metering pump (9) and handled, in order to strengthen micro- life
The activity and degradation of thing, air compressor (20) constantly blast air by aeration tube (17) in filter tank (13), pass through
Water after BAF (13) processing is drained into discharge bay (12) as backwashing water by outlet pipe (11),.Aeration
After the operation a period of time of biofilter (13), filler has retained large amount of organic in (14), declines filter tank (13) discharge capacity
And filter tank (13) effluent quality is deteriorated, it is therefore desirable to periodically filter tank (13) are backwashed, filter tank (13) are closed during backwash
Water intaking valve and outlet valve, successively open backwash tracheae (21) intake valve and air compressor (20) carry out air purge, air purge
The water intaking valve and backwash pump (18) for opening backwash water pipe (19) successively after finishing are washed, and backwashing wastewater passes through
Overflow pipe (15) is drained, and filter tank enters next work period after backwash is finished.
Compared with prior art, the present invention provides the halo aldehydes DBPs that a kind of chemistry is combined with Biological Pretreatment
Precursor removal device, compound pre-oxidation is carried out using potassium permanganate and chlorine dioxide, and potassium permanganate is used as a kind of traditional oxygen
Agent is widely used in clean water treatment, and on the one hand it can aoxidize the organic matter in water, by larger molecular organicses oxidation point
Solution into the small organic molecule for being easy to microbial degradation, while the nascent state manganese dioxide of potassium permanganate oxidation generation have it is huge
Specific surface area, have very strong suction-operated, larger Molecularly Imprinted Polymer can be formed in water, and play between colloidal solid frame
Bridge is acted on, and is combined together water-borne glue body, plays enhanced coagulation effect so that a part of halo aldehydes DBPs precursor
Thing is removed in dosing mixing pit.Chlorine dioxide is as pre-oxidation agent, compared with liquid chlorine, and it has with organic pollution reaction
High selectivity, and it is main based on oxidation reaction with organic matter reaction, do not occur chlorination reaction with organic humus substantially, because
This can reduce the generation of halo aldehydes DBPs.In addition, chlorine dioxide can effectively control the numerous of the aquatiles such as algae
Grow, promote colloid and algae de- steady, flco is had more preferable settleability, these are all conducive to halo aldehydes DBPs precursor
The removal of thing.Water after oxidation enters back into BAF and is further processed, and utilizes the suction of filler
The degradation of attached effect and microorganism makes halo aldehydes disinfection by-products formation potential further remove.Technique component arrangement is tight
Gather, floor space it is few, and between each technique it is mutually coordinated, have complementary functions, pre-oxidation process eliminates larger in raw water
Graininess impurity, suspension, are that BAF creates good working environment, while BAF will pre-oxidize work
The small molecule halo aldehydes disinfection by-products formation potential that skill can not be removed further is removed, so as to reduce halo aldehydes sterilization by-product
Thing risk of exceeding criterion.
In addition, the present invention also proposes a kind of halo aldehydes disinfection by-products formation potential minimizing technology, based on said apparatus
Implement, this method comprises the following steps：
S1, obtains raw water, the raw water, potassium permanganate and chlorine dioxide is put into dosing mixing pit reaction system, in institute
State in dosing mixing pit reaction system and compound pre-oxidation is carried out using potassium permanganate and chlorine dioxide to raw water, remove the raw water
In a part of halo aldehydes disinfection by-products formation potential；
S2, aeration biological filter chamber treatment system is put into by the water after compound pre-oxidation, in BAF processing
In system, the halogen in the water after compound pre-oxidation is further removed using the suction-operated of filler and the degradation of microorganism
For aldehydes disinfection by-products formation potential.
Further, the halo aldehydes disinfection by-products formation potential minimizing technology also includes：
S3, is backwashed by air-water backwashing system to the filter tank in the aeration biological filter chamber treatment system.
The principle that halo aldehydes disinfection by-products formation potential of the present invention is removed, refer to said apparatus embodiment, herein not
Repeat again.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize
Equivalent structure or the flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of halo aldehydes disinfection by-products formation potential removal device, it is characterised in that including：For mix potassium permanganate,
Chlorine dioxide and pending raw water, carry out compound pre-oxidation using potassium permanganate and chlorine dioxide to raw water, remove the raw water
In a part of halo aldehydes disinfection by-products formation potential dosing mixing pit reaction system, and for using filler absorption
The degradation of effect and microorganism further removes the halo aldehydes DBPs precursor in the water after compound pre-oxidation
The aeration biological filter chamber treatment system of thing, the dosing mixing pit reaction system passes through with the aeration biological filter chamber treatment system
Pipeline is connected.
2. halo aldehydes disinfection by-products formation potential removal device according to claim 1, it is characterised in that the halo
Aldehydes disinfection by-products formation potential removal device also includes：For being carried out to the filter tank in the aeration biological filter chamber treatment system
The air-water backwashing system of backwash, the air-water backwashing system is connected with the aeration biological filter chamber treatment system by pipeline
Connect.
3. halo aldehydes disinfection by-products formation potential removal device according to claim 2, it is characterised in that the dosing
Mixing pit reaction system includes：Dosing mixing pit, potassium permanganate medicine liquid irrigation, chlorine dioxide medicine liquid irrigation, magnetic drive pump, and be placed on
Agitator in the dosing mixing pit；Wherein：
The dosing mixing pit is provided with water inlet and delivery port, delivery port and the BAF of the dosing mixing pit
Processing system is connected by pipeline；
The potassium permanganate medicine liquid irrigation is connected by chemical feed pipe with the water inlet of the dosing mixing pit, the chlorine dioxide decoction
Filling is connected by chemical feed pipe with the chemical feed pipe of the potassium permanganate medicine liquid irrigation, and together connects the water inlet of the dosing mixing pit
Mouthful；
Outlet pipe of the chemical feed pipe of the chemical feed pipe of the potassium permanganate medicine liquid irrigation and the chlorine dioxide medicine liquid irrigation with magnetic drive pump
It is connected, raw water is well mixed with medicament in pipeline section, and is entered by the water inlet in dosing mixing pit.
4. halo aldehydes disinfection by-products formation potential removal device according to claim 3, it is characterised in that each chemical feed pipe
It is provided with diaphragm metering pump and valve.
5. halo aldehydes disinfection by-products formation potential removal device according to claim 3, it is characterised in that the water inlet
Mouth is arranged on the upper end of the dosing mixing pit side, and the delivery port is arranged on the water inlet of the dosing mixing pit with respect to one
The bottom of side.
6. halo aldehydes disinfection by-products formation potential removal device according to claim 3, it is characterised in that the aeration
Biological filter chamber treatment system includes：Water inlet pipe, outlet pipe, discharge bay, filter tank, filler, overflow pipe, wherein：
The water inlet pipe, outlet pipe and overflow pipe are separately positioned on the filter tank, and the water inlet pipe is located at the one of the filter tank
Side upper end, the outlet pipe is located at the bottom in the filter tank, and the overflow pipe is located at the upper end of the opposite side in the filter tank；It is described
Filler is arranged in the filter tank；
The delivery port of the dosing mixing pit is connected with the water inlet pipe on the filter tank；
The discharge bay is connected with the outlet pipe on the filter tank.
7. halo aldehydes disinfection by-products formation potential removal device according to claim 6, it is characterised in that the aeration
Biological filter chamber treatment system also includes：Aeration tube and the aeration head for being arranged on the aeration tube end, the aeration tube are located at
One end of aeration head is inserted in the filter tank, and the aeration head is located under the filler；The other end of the aeration tube connects
Connect the air-water backwashing system.
8. halo aldehydes disinfection by-products formation potential removal device according to claim 7, it is characterised in that the air water
Backwashing system includes：Air compressor, backwash pump, backwash water pipe, air compressor, backwash tracheae, wherein：
The backwash water pipe is connected between the bottom in the discharge bay and the filter tank；
The backwash tracheae is connected between the bottom in the air compressor and the filter tank；
The other end of the air compressor also with the aeration tube is connected, and the air compressor passes through the backwash tracheae
And the aeration tube blasts air to the filter tank and carries out air purge；
The backwash pump is connected on the backwash water pipe, and the backwash pump draws water from discharge bay, and by recoiling
Wash water pipe feeding filter tank is washed, and the water after backwash is drained by the overflow pipe.
9. a kind of halo aldehydes disinfection by-products formation potential minimizing technology, it is characterised in that comprise the following steps：
Raw water is obtained, the raw water, potassium permanganate and chlorine dioxide are put into dosing mixing pit reaction system, it is mixed in the dosing
Close in the reaction system of pond and compound pre-oxidation is carried out using potassium permanganate and chlorine dioxide to raw water, remove one in the raw water
Divide halo aldehydes disinfection by-products formation potential；
Water after compound pre-oxidation is put into aeration biological filter chamber treatment system, in the aeration biological filter chamber treatment system,
The halo aldehydes in the water after compound pre-oxidation is further removed using the suction-operated of filler and the degradation of microorganism
Disinfection by-products formation potential.
10. halo aldehydes disinfection by-products formation potential minimizing technology according to claim 9, it is characterised in that the halogen
Also include for aldehydes disinfection by-products formation potential minimizing technology：
The filter tank in the aeration biological filter chamber treatment system is backwashed by air-water backwashing system.
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