CN109133324A - A kind of drinking water treatment equipment and method - Google Patents
A kind of drinking water treatment equipment and method Download PDFInfo
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- CN109133324A CN109133324A CN201811344109.1A CN201811344109A CN109133324A CN 109133324 A CN109133324 A CN 109133324A CN 201811344109 A CN201811344109 A CN 201811344109A CN 109133324 A CN109133324 A CN 109133324A
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- 238000011282 treatment Methods 0.000 title claims abstract description 41
- 239000003651 drinking water Substances 0.000 title claims abstract description 36
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 48
- 238000005189 flocculation Methods 0.000 claims abstract description 40
- 238000004062 sedimentation Methods 0.000 claims abstract description 33
- 230000003647 oxidation Effects 0.000 claims abstract description 29
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 29
- 230000000249 desinfective effect Effects 0.000 claims abstract description 28
- 239000004576 sand Substances 0.000 claims abstract description 18
- 230000001112 coagulating effect Effects 0.000 claims abstract description 16
- 230000015271 coagulation Effects 0.000 claims abstract description 10
- 238000005345 coagulation Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 9
- 239000002244 precipitate Substances 0.000 claims abstract 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 65
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 33
- 239000004155 Chlorine dioxide Substances 0.000 claims description 32
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 30
- 239000000460 chlorine Substances 0.000 claims description 30
- 229910052801 chlorine Inorganic materials 0.000 claims description 30
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 23
- 239000000701 coagulant Substances 0.000 claims description 23
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 23
- 239000000645 desinfectant Substances 0.000 claims description 22
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 18
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 9
- 239000002352 surface water Substances 0.000 claims description 7
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 6
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 230000016615 flocculation Effects 0.000 claims description 4
- 238000004176 ammonification Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 14
- 229940099041 chlorine dioxide Drugs 0.000 description 28
- 230000008569 process Effects 0.000 description 10
- 230000001954 sterilising effect Effects 0.000 description 7
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910001919 chlorite Inorganic materials 0.000 description 3
- 229910052619 chlorite group Inorganic materials 0.000 description 3
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- VCOYRKXQRUGBKS-UHFFFAOYSA-N N.[Cl] Chemical compound N.[Cl] VCOYRKXQRUGBKS-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000855 fungicidal effect Effects 0.000 description 2
- 239000000417 fungicide Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical group ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 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
- 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2303/04—Disinfection
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of drinking water treatment equipment and methods, the equipment includes: central controller, cyclone-flocculation room, sedimentation basin, sand filter, disinfecting tank, clear water reserviors, raw water is conveyed through water-delivery pump into the cyclone-flocculation room, sedimentation basin is flowed into after the raw water of inflow is carried out raw water pre-oxidation and coagulating by the cyclone-flocculation room, after the sedimentation basin precipitates the raw water after pre-oxidation and coagulation, sand filter is sent into be filtered, filtered raw water is flowed into disinfecting tank in the sand filter, the clear water reserviors are pumped by water delivery after filtered raw water is carried out disinfection processing by the disinfecting tank, through the invention, it is few that a kind of disinfection by-products generation can be achieved, drinking water treatment technique with long-acting disinfection effect and economic security.
Description
Technical field
The present invention relates to technical field of drinking water treatment, the drink combined more particularly to a kind of chlorine dioxide with sodium hypochlorite
With water treatment facilities and method.
Background technique
For surface water as one of drinking water source, water quality superiority and inferiority directly influences the selection and water outlet of water factory's treatment process
Water quality.Currently, the treatment process of waterworks mainly has the conventional treatment process based on coagulation, precipitating, filtering, disinfection, and
Using ozone biological activated carbon as the advanced treatment process of representative.Waterworks either uses conventional treatment process or depth
Science and engineering skill, disinfection are all the important process links for ensureing drinking water microbial safety.The most common disinfectant in waterworks at present
It is liquid chlorine, chlorine dioxide, sodium hypochlorite.Not only cost is relatively low for chlorine system disinfectant, but also oxidisability is very strong, in drinking water disinfection
Existing last 100 years history.However, chlorine, as the fungicide being used for a long time, negative effect is also more and more prominent: on the one hand, chlorine
The disinfection by-products such as haloform can be generated applied to drinking water disinfection, these by-products usually have " carcinogenic, teratogenesis, cause it is prominent
The three of change " cause characteristics；On the other hand, since the fungicide is used for a long time, bacterium produces drug resistance, makes the usage amount of chlorine gradually
Increase.With the progress for testing and analyzing technology and toxicologic study, Disinfection Byproducts in Drinking Water to the harm of human health by
To more and more concerns.
In order to control the generation of Disinfection Byproducts in Drinking Water, it is mainly the following method at present: 1) strenuous primary treatment,
Disinfection by-products formation potential concentration in water is reduced, under conditions of not changing disinfectant type and dosage, reduces disinfection by-product
The generation of object, however this method is more demanding to water factory's technological design, operational management, water quality detection, and cannot fundamentally solve
The problem of certainly haloform generates；2) using the ultraviolet and united sterilization method of chlorine, this method is used and is used after ultraviolet disinfection
Combined sterilizing agent can reduce the usage amount of uv dosage and disinfectant simultaneously, reduce the generation of disinfection by-products, but sterilize
Effect is vulnerable to raw water quality, the influence in ultraviolet lamp tube service life, and this method energy consumption is larger, for municipal water supply field apply by
Limit；3) traditional chlorine, sodium hypochlorite are substituted using chlorine dioxide (ClO2), is generated to reduce disinfection by-products
Amount, though however chlorine dioxide can substantially reduce the formation of the chlorinated secondary products such as haloform in water, by chlorine dioxide occur
Preparation process is limited, and the purity of chlorine dioxide of preparation is not high, is easy to introduce the substances such as chlorate, chlorite.
Therefore it is directed to current sterilization process bring disinfection by-products problem, Disinfection Processes in Drinking Water Treatment field is badly in need of one kind and disappears
Toxic byproduct generates less, with long-acting disinfection effect, the drinking water treatment technology of economic security.
Summary of the invention
In order to overcome the deficiencies of the above existing technologies, purpose of the present invention is to provide a kind of drinking water treatment equipment and
A kind of method, to realize that disinfection by-products generates drinking water treatment technique less, with long-acting disinfection effect and economic security.
In order to achieve the above object, the present invention proposes a kind of drinking water treatment equipment, comprising: central controller, cyclone-flocculation room,
Sedimentation basin, sand filter, disinfecting tank, clear water reserviors, raw water are conveyed into the cyclone-flocculation room through water-delivery pump, are wadded a quilt with cotton in the eddy flow
Solidifying room flows into sedimentation basin after the raw water of inflow is carried out raw water pre-oxidation and coagulating, in the sedimentation basin to through pre-oxidation and
After raw water after coagulation is precipitated, it is sent into sand filter and is filtered, filtered raw water is flowed into the sand filter and is contacted
Sterilization pool is pumped into the clear water reserviors by water delivery after filtered raw water is carried out disinfection processing by the disinfecting tank.
Preferably, the chlorine-containing disinfectant type and coagulant according to surface water quality to be processed selection for pre-oxidation,
The chlorine-containing disinfectant and coagulant of selection are added in the cyclone-flocculation room.
Preferably, a certain amount of chlorine dioxide and coagulant is added in the cyclone-flocculation room, to carry out the pre- oxygen of raw water
Change and coagulation.
Preferably, the central controller is wadded a quilt with cotton according to the delivery turbidity of raw water flow of inlet water and sedimentation basin to the eddy flow
The a certain amount of chlorine dioxide and coagulant by calculating are added in solidifying room, to carry out raw water pre-oxidation and coagulating.
Preferably, in the water exit end of the sedimentation basin, water quality in-line meter, the data transmission of the water quality in-line meter are installed
Into the central controller, the dosage of modified coagulant, chlorine dioxide is calculated in real time by the central controller, and anti-
It is fed to the cyclone-flocculation room and data is provided.
Preferably, in the cyclone-flocculation room, in 20-30min, origin or beginning velocity gradient g value is 90 for flocculation time control
~110s-1, tip speed gradient G value is 10~20s-1。
Preferably, it in the disinfecting tank, adds sodium hypochlorite or chloramines and ammonium sulfate carries out disinfection processing.
Preferably, by the central controller controls added amount of chemical, sodium hypochlorite or chloramines are added to disinfecting tank
And ammonium sulfate.
Preferably, in installing online ammonia nitrogen detection instrument, the online ammonia nitrogen detector on the outlet pipe of the sand filter
Data be transmitted to the central controller, the central controller judges whether to need according to the ammonia nitrogen concentration for crossing water after filter
Starting ammonification equipment is to supplement insufficient ammonia nitrogen in raw water, it is ensured that sodium hypochlorite is reacted with ammonia nitrogen generates chloramines, to realize chemical combination
The purpose of chlorination.
In order to achieve the above objectives, the present invention also provides a kind of drinking water treatment method, include the following steps:
Raw water is entered cyclone-flocculation room by water-delivery pump, added into cyclone-flocculation room for pre-oxidation by step S1
Chlorine-containing disinfectant and coagulant, to carry out raw water pre-oxidation and coagulating；
Step S2, raw water flow into sedimentation basin after cyclone-flocculation room comes into full contact with coagulant, chlorine-containing disinfectant and to react；
Step S3, raw water are filtered after sedimentation basin precipitating into sand filter；
Step S4 completes filtered raw water and flows into disinfecting tank, to disinfecting tank add chlorine-containing disinfectant with into
Row disinfection treatment；
The raw water disinfected after the completion is pumped into clear water reserviors by water delivery by step S5.
Compared with prior art, a kind of drinking water treatment equipment of the present invention and method pass through using chlorine dioxide as pre-oxidation
Solidifying medicament is helped, oxygenolysis is carried out to former Organic substance in water using the strong oxidizing property of chlorine dioxide, improves coagulating treatment effect,
And by adding sodium hypochlorite in water after filter, is reacted with ammonia nitrogen in water and generate chloramines, reduced in the way of chemical combination chlorination
Disinfection by-products production quantity, while ensure that certain density chlorine residue in output water, Disinfection Effect is persistently played in pipe network.
Detailed description of the invention
Fig. 1 is a kind of system architecture schematic diagram of drinking water treatment equipment of the present invention；
Fig. 2 is a kind of step flow chart of drinking water treatment method of the present invention.
Specific embodiment
Below by way of specific specific example and embodiments of the present invention are described with reference to the drawings, those skilled in the art can
Understand further advantage and effect of the invention easily by content disclosed in the present specification.The present invention can also pass through other differences
Specific example implemented or applied, details in this specification can also be based on different perspectives and applications, without departing substantially from
Various modifications and change are carried out under spirit of the invention.
Fig. 1 is a kind of system architecture schematic diagram of drinking water treatment equipment of the present invention.As shown in Figure 1, present invention one kind two
Drinking water treatment equipment, comprising: central controller 1, cyclone-flocculation room 2, sedimentation basin 3, sand filter 4, disinfecting tank 5, clear water
Pond 6.
Wherein, raw water is conveyed through water-delivery pump into cyclone-flocculation room 2, and the raw water that cyclone-flocculation room 2 is used to make to flow into carries out former
Flowing into sedimentation basin 3 after water pre-oxidation and coagulating can select in the specific embodiment of the invention according to surface water quality to be processed
It is anti-to carry out raw water pre-oxidation and coagulation to select chlorine-containing disinfectant type and coagulant the addition cyclone-flocculation room 2 for pre-oxidation
It answers, specifically, by the way that a certain amount of chlorine dioxide and coagulant are added in cyclone-flocculation room 2 (in the specific embodiment of the invention
It is middle to use aluminium polychloride), to carry out raw water pre-oxidation and coagulation, further, intake by central controller 1 according to raw water
The delivery turbidity of flow and sedimentation basin 3 adds a certain amount of chlorine dioxide and coagulant by calculating into cyclone-flocculation room 2
(aluminium polychloride), to carry out raw water pre-oxidation and coagulating, in the specific embodiment of the invention, 1 basis of central controller
Raw water turbidity and water to be processed, are computed determining high-pure chlorinedioxide dosage, and dosage range is in 0.3-1.0mg/L
Reach good flocculating effect, in the specific embodiment of the invention, flocculation time control is in 20-30min (preferably, being
25min or so), origin or beginning velocity gradient g value is 90~110s-1(preferably 100s-1), tip speed gradient G value be 10~
20s-1；Sedimentation basin 3 is sent into sand filter 4 and is filtered, in the present invention for precipitating to the raw water after pre-oxidation and coagulation
In specific embodiment, sedimentation basin 3 uses tube settling room；Filtered raw water is flowed into disinfecting tank 5 by sand filter 4；Contact
Filtered raw water is carried out disinfection and by water delivery is pumped into clear water reserviors 6 after processing by sterilization pool 5, in this way by taking in clear water reserviors 6
Water body detected, can quantitative analysis under the conditions of the combined sterilizing, the type and concentration of disinfection by-products in water outlet, this
It can be chlorine-containing disinfectant type used in selection disinfecting process according to surface water quality to be processed in invention specific embodiment,
Specifically, the sodium hypochlorite processing that carries out disinfection can be added in disinfecting tank 5 further to be controlled by central controller 1
Added amount of chemical adds sodium hypochlorite to disinfecting tank, and disinfection time of contact is no less than 2 hours, the chlorine-containing disinfectant
Chloramines can be used, it,, can be simultaneously to connecing when using chloramines disinfection according to water supply scale in the specific embodiment of the invention
Touching sterilization pool adds ammonium sulfate, and chlorine ammonia ratio is set as 3:1；Central controller 1, for according to raw water flow of inlet water and sedimentation basin 3
Delivery turbidity, calculate and control the dosage of the chlorine dioxide and coagulant that add into cyclone-flocculation room 2, at the same control to
The dosage for the sodium hypochlorite that disinfecting tank 5 adds.
Preferably, to obtain the delivery turbidity of sedimentation basin 3 water quality in-line meter 7 can be installed, such as in 3 water exit end of sedimentation basin
The data of transmissometer, pH instrument, the water quality in-line meter are transferred into central controller 1 by data, are that central controller 1 is real-time
The dosage of modified coagulant, chlorine dioxide is calculated, and feeds back to cyclone-flocculation room 2 and data is provided.
Preferably, online ammonia nitrogen detection instrument 8 can be also installed on the outlet pipe of sand filter 4, online ammonia nitrogen detector 8
Data are transmitted to central controller 1, and central controller 1 judges whether to need to start ammonification according to the ammonia nitrogen concentration for crossing water after filter
Equipment is to supplement insufficient ammonia nitrogen in raw water, it is ensured that sodium hypochlorite is reacted with ammonia nitrogen generates chloramines, to realize chemical combination chlorination
Purpose, in the specific embodiment of the invention, chlorine, ammonia ratio general control in 3-4 or so.
Fig. 2 is a kind of step flow chart for the drinking water treatment method that chlorine dioxide is combined with sodium hypochlorite of the present invention.Such as
Shown in Fig. 2, a kind of drinking water treatment method that chlorine dioxide is combined with sodium hypochlorite of the present invention includes the following steps:
Raw water is entered cyclone-flocculation room by water-delivery pump, added into cyclone-flocculation room for pre-oxidation by step S1
Chlorine-containing disinfectant and coagulant, to carry out raw water pre-oxidation and coagulating.Specifically, dioxy can be added into cyclone-flocculation room
Change chlorine and coagulant (aluminium polychloride), to carry out raw water pre-oxidation and coagulating.In the specific embodiment of the invention, in
It entreats controller according to the delivery turbidity of raw water flow of inlet water and sedimentation basin, adds into cyclone-flocculation room by a certain amount of of calculating
Chlorine dioxide and coagulant (aluminium polychloride) carry out raw water pre-oxidation and coagulating, preferably, in order to reach good wadding
Solidifying effect, flocculation time control are 90~110s in 20-30min (preferably, for 25min or so), origin or beginning velocity gradient g value-1
(preferably 100s-1), tip speed gradient G value is 10~20s-1.In the specific embodiment of the invention, central controller root
According to raw water turbidity and water to be processed, it is computed determining high-pure chlorinedioxide dosage, dosage range is in 0.3-1.0mg/L.
Step S2, raw water in cyclone-flocculation room and coagulant (being aluminium polychloride in the specific embodiment of the invention), contain chlorine
Disinfectant (being high-pure chlorinedioxide in the specific embodiment of the invention) flows into sedimentation basin after coming into full contact with reaction.
Step S3, raw water is filtered after sedimentation basin precipitating into sand filter, in the specific embodiment of the invention, is sunk
Shallow lake pond is inclined-tube sedimentation tank.
Step S4 completes filtered raw water and flows into disinfecting tank, to disinfecting tank add chlorine-containing disinfectant with into
Row disinfection treatment, the chlorine-containing disinfectant can be selected according to surface water quality to be processed, described in the specific embodiment of the invention
Sodium hypochlorite can be used in chlorine-containing disinfectant, specifically, is thrown by central controller according to the ammonia nitrogen concentration control medicament for crossing water after filter
Dosage adds sodium hypochlorite to disinfecting tank, and disinfecting tank guarantees that disinfection time of contact is not less than 2h.The chlorine-containing disinfecting
Chloramines can also be used in agent, can be simultaneously when using chloramines disinfection according to water supply scale in the specific embodiment of the invention
Ammonium sulfate is added to disinfecting tank, chlorine ammonia ratio is set as 3:1.
The raw water disinfected after the completion is pumped into clear water reserviors by water delivery by step S5.Take in this way clear water reserviors water body into
Row detection, can quantitative analysis under the conditions of the combined sterilizing, the type and concentration of disinfection by-products in water outlet.
Below by way of illustrating drinking water treatment effect of the invention in specific embodiment:
Embodiment one (winter):
Raw water turbidity 10.3NTU, CODMnConcentration 2.12mg/L, high-pure chlorinedioxide dosage 0.5mg/L, through coagulating sedimentation
After processing, sedimentation basin delivery turbidity 0.52NTU, water after filter sodium hypochlorite dosage 0.6mg/L, output water are discharged residual chlorine concentration
1.2mg/L, chlorite as disinfection by-product 0.106mg/L, chlorate 0.072mg/L, haloform total amount are 0.042mg/L.
Embodiment two (summer):
Raw water turbidity 25.1NTU, CODMnConcentration 2.08mg/L, high-pure chlorinedioxide dosage 0.8mg/L, through coagulating sedimentation
After processing, sedimentation basin delivery turbidity 0.49NTU, water after filter sodium hypochlorite dosage 1.2mg/L, output water are discharged residual chlorine concentration
0.85mg/L, chlorite as disinfection by-product 0.159mg/L, chlorate 0.101mg/L, haloform total amount are 0.065mg/L.
In conclusion a kind of drinking water treatment equipment that chlorine dioxide is combined with sodium hypochlorite of the present invention and method by with
Chlorine dioxide helps solidifying medicament as pre-oxidation, carries out oxygenolysis to former Organic substance in water using the strong oxidizing property of chlorine dioxide,
Coagulating treatment effect is improved, and by adding sodium hypochlorite in water after filter, is reacted with ammonia nitrogen in water and generate chloramines, utilize change
The mode for closing chlorination reduces disinfection by-products production quantity, while ensure that certain density chlorine residue in output water, in pipe network
In persistently play Disinfection Effect.
Compared with prior art, the invention has the following beneficial effects:
1) present invention can be to disappear containing chlorine used in selection pre-oxidation and rear disinfecting process according to surface water quality to be processed
Toxic agent type and concentration can be directed to different source qualities, optimize and revise the dosage of chlorine dioxide, coagulant, sodium hypochlorite.
2) it is determined by experiment medicament optimum dosage, is realized under the premise of guaranteeing Disinfection Effect, it is secondary to reduce disinfection
The purpose of product formation；
2) present invention employs high-pure chlorinedioxides, compared to the chlorine dioxide of conventional on-site preparation, low with residue,
Oxidation effectiveness is good, can long term storage the advantages of.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.Any
Without departing from the spirit and scope of the present invention, modifications and changes are made to the above embodiments by field technical staff.Therefore,
The scope of the present invention, should be as listed in the claims.
Claims (10)
1. a kind of drinking water treatment equipment, comprising: central controller, cyclone-flocculation room, sedimentation basin, sand filter, disinfecting tank,
Clear water reserviors, raw water are conveyed through water-delivery pump into the cyclone-flocculation room, and the raw water of inflow is carried out raw water in the cyclone-flocculation room
Sedimentation basin is flowed into after pre-oxidation and coagulating, after the sedimentation basin precipitates the raw water after pre-oxidation and coagulation,
It is sent into sand filter to be filtered, filtered raw water is flowed into the disinfecting tank in the sand filter, disappear in the contact
Filtered raw water is carried out disinfection and by water delivery is pumped into the clear water reserviors after processing by malicious pond.
2. a kind of drinking water treatment equipment as described in claim 1, it is characterised in that: selected according to surface water quality to be processed
For the chlorine-containing disinfectant type and coagulant of pre-oxidation, be added in the cyclone-flocculation room chlorine-containing disinfectant of selection with
And coagulant.
3. a kind of drinking water treatment equipment as claimed in claim 2, it is characterised in that: be added one in the cyclone-flocculation room
Quantitative chlorine dioxide and coagulant, to carry out raw water pre-oxidation and coagulation.
4. a kind of drinking water treatment equipment as claimed in claim 3, it is characterised in that: the central controller according to raw water into
The delivery turbidity of water flow and sedimentation basin adds a certain amount of chlorine dioxide and coagulation by calculating into the cyclone-flocculation room
Agent, to carry out raw water pre-oxidation and coagulating.
5. a kind of drinking water treatment equipment as claimed in claim 4, it is characterised in that: in the water exit end of the sedimentation basin, peace
Water quality in-line meter is filled, the data of the water quality in-line meter are transferred into the central controller, real by the central controller
When calculate the dosage of modified coagulant, chlorine dioxide, and feed back to the cyclone-flocculation room and data be provided.
6. a kind of drinking water treatment equipment as described in claim 1, it is characterised in that: in the cyclone-flocculation room, flocculation
In 20-30min, origin or beginning velocity gradient g value is 90~110s for time control-1, tip speed gradient G value is 10~20s-1。
7. a kind of drinking water treatment equipment as described in claim 1, it is characterised in that: in the disinfecting tank, add
Sodium hypochlorite or chloramines and ammonium sulfate carry out disinfection processing.
8. a kind of drinking water treatment equipment as claimed in claim 7, it is characterised in that: by the central controller controls medicament
Dosage adds sodium hypochlorite or chloramines and ammonium sulfate to disinfecting tank.
9. a kind of drinking water treatment equipment as claimed in claim 8, it is characterised in that: pacify on the outlet pipe of the sand filter
Instrument is detected mounted in line ammonia nitrogen, the data of the online ammonia nitrogen detector are transmitted to the central controller, the center control
Device judges whether to need to start ammonification equipment according to the ammonia nitrogen concentration for crossing water after filter to supplement insufficient ammonia nitrogen in raw water, it is ensured that
Sodium hypochlorite is reacted with ammonia nitrogen generates chloramines, to realize the purpose of chemical combination chlorination.
10. a kind of drinking water treatment method, includes the following steps:
Raw water is entered cyclone-flocculation room by water-delivery pump by step S1, is added into cyclone-flocculation room for pre-oxidation containing chlorine
Disinfectant and coagulant, to carry out raw water pre-oxidation and coagulating；
Step S2, raw water flow into sedimentation basin after cyclone-flocculation room comes into full contact with coagulant, chlorine-containing disinfectant and to react；
Step S3, raw water are filtered after sedimentation basin precipitating into sand filter；
Step S4 completes filtered raw water and flows into disinfecting tank, to the disinfecting tank add chlorine-containing disinfectant with into
Row disinfection treatment；
The raw water disinfected after the completion is pumped into clear water reserviors by water delivery by step S5.
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| CN201811344109.1A CN109133324A (en) | 2018-11-13 | 2018-11-13 | A kind of drinking water treatment equipment and method |
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