CN104944540A - Intelligent disinfection and sterilization system for chloride-free tap water - Google Patents
Intelligent disinfection and sterilization system for chloride-free tap water Download PDFInfo
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- CN104944540A CN104944540A CN201510401402.7A CN201510401402A CN104944540A CN 104944540 A CN104944540 A CN 104944540A CN 201510401402 A CN201510401402 A CN 201510401402A CN 104944540 A CN104944540 A CN 104944540A
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- formic acid
- reaction box
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- hydrogen peroxide
- acid
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Abstract
The invention discloses an intelligent disinfection and sterilization system and method for chloride-free tap water. The system is characterized by comprising a formic acid storage box (1), a hydrogen peroxide storage box (2), a reaction box (5), an addition metering pump (6), a cooling device and an intelligent control device, wherein the input end of the addition metering pump (6) is connected with the output end of the reaction box (5), the output end of the addition metering pump (6) extends into a water outlet of a tap water plant through a water pipe, performic acid with low dosage is rapidly dissolved into water, achieves disinfection and sterilization within 60 s and rapidly decomposed into water and carbon dioxide, and the input end of the reaction box (5) is connected with the output end of the formic acid storage box (1) and the output end of the hydrogen peroxide storage box (2). The intelligent disinfection and sterilization system is high in disinfection and sterilization efficiency, has no residue, and is low in running cost and convenient to maintain.
Description
Technical field
The present invention relates to a kind of water technology, especially a kind of water treatment technology, specifically a kind of intelligent tap water is without chlorine disinfectant disinfection system.
Background technology
Disinfection technology is widely used in water treatment field, is one of important means of water technology.Existing disinfection technology mainly contains following a few class:
1. there is chlorine disinfectant sterilization.As: chlorine, clorox, dioxide peroxide etc.
2. ultraviolet ray sterilization bactericidal.
3. ozone disinfecting-sterilizing
4. hydrogen peroxide disinfection.
5. other disinfection modes: photocatalysis technology, electric field disinfection technology, (copper silver) alloy disinfection technology etc.
The subject matter that above-mentioned disinfection technology exists is:
1. there is chlorine disinfectant sterilization technology.
This is a kind of technology being widely used in city tap-water disinfection.Wherein:
Disinfection by chlorine sterilization can generate the carcinogenic substances such as haloform.And chlorine inherently has poison gas, storing or using all needs strict control.
Hypochlorite disinfectant's sterilization generally adopts hydrochloric acid (HCl) to add sodium chlorate (Na
2clO) reaction forms.Because hydrochloric acid belongs to hazardous substance and precursor chemicals, the buying in market and shipping storage all require higher.
Disinfection by chlorine dioxide sterilization generally by electrolytic saltwater and obtaining, efficiency is lower but consume energy very large.
Several above have chlorine disinfectant bactericidal assay all can produce the meta-bolites endangered human body or physical environment, and in its final product, chlorion endangers very large in industrial production, and it can to the generation such as pipeline, equipment corrosive nature.Because of the stability of its chemical structure, chlorion is difficult to be removed
2. ultraviolet ray sterilization bactericidal technology.
Ultraviolet ray sterilization bactericidal utilizes the DNA(thymus nucleic acid in suitable wavelength destroy microorganisms cell) and RNA(Yeast Nucleic Acid) molecular structure and play sterilization and in use have following shortcoming:
(1) without Continuous sterilization ability, can be able to again pollute after ultraviolet disappears.
(2) in turbidity and water, suspended substance has considerable influence to ultraviolet ray sterilization bactericidal, reduces sterilization effect.
(3) the easy fouling of UV-lamp sleeve pipe, affects appearing and sterilization effect of ultraviolet.
(4) relative energy consumption is larger.
3. ozone sterilizing disappears bacterium
The ozone sterilizing bacterium that disappears utilizes its strong oxidizing property to carry out destruction to bacterium, cell walls and inner DNA, RNA to play killing action, in use has following shortcoming:
(1). the main Problems existing of ozone disinfecting-sterilizing is that production unit (spark-discharge method) is huge, flow process is complicated, needs higher operation and management level.Ozone generation rate lower (1 ~ 2%), power consumption is large, and building equipment investment is comparatively large, cost is very high, is not suitable for the disinfection technique that the water yield is larger.
(2) ozone is a kind of gas of instability, easily decomposes in water, adopts separately ozone disinfecting-sterilizing to be difficult to the effect ensureing to continue.
(3) there are some researches show that ozone and organism reaction can generate unsaturated aldehydes, the toxic substances such as dual oxide compound, can produce carinogenicity product: main degradation products has organism in containing a small amount of bromide: methenyl bromide, acetonitrile methyl chloride, 1-1 bis-bromoketone etc.Inorganic nature product has bromate, hypobromous acid etc.Wherein will importantly bromate, its maximum acceptable concentration is extremely low, and USS is 0.01mg/L.
(4) chlorination or chloramines can generate trichloronitromethane respectively and mauguinite all has larger harm again after ozonize.
4. hydrogen peroxide disinfection
The hydrogen peroxide virus killing bacterium that disappears also is utilize its strong oxidizing property to play sterilization, and its shortcoming is:
(1). hydrogen peroxide (H
2-O
2) human body gene (DNA) damage and transgenation can be caused, be related closely with various pathology.
(2). hydrogen peroxide can cause the animal such as mouse and rabbit carcinogenic, thus may possess danger to the mankind.
(3). hydrogen peroxide may accelerate mankind aging's process, itself and senile dementia especially presenile dementia generation and develop closely related, as strong oxidizer by antioxidant in consume body, make resistance of oxidation low, resistibility declines and causes various disease further.
(4). hydrogen peroxide may cause or increase the weight of the eye diseases such as cataract, can cause injury of lung by respiratory tract, and multiple-contact can cause human hair to bleach, xanthoderma etc.
(5). small molecules hydrogen peroxide per os is taken in and is easy to enter cells in vivo and tissue, can cause the numerous disease relevant to free radical by freedom of entry radical reaction chain.
5. other disinfection modes-
---
Limitation due to himself: the factors such as too low in efficiency, energy consumption is too large, investment is too high and stability is inadequate can not be accepted extensively by water treatment market.
Summary of the invention
The object of the invention is for existing water treatment exist residual large, efficiency is low, the problem that cost is high, designs a kind of noresidue, efficient tap water fast without chlorine disinfectant disinfection system.
Technical scheme of the present invention is:
A kind of intelligent tap water, without chlorine disinfectant disinfection system, is characterized in that it comprises:
One reaction box 5, this reaction box 5 is for generating the peroxyformic acid needed for disinfection;
One adds volume pump 6, and this adds volume pump 6 for delivering in pending tap water by the peroxyformic acid generated in reaction box 5 by the requirement of technological process and dosage pump;
One formic acid retention tank 1, has deposited formic acid in this formic acid retention tank 1, it by volume pump in reaction box 5 pumping reaction needed for formic acid;
One hydrogen peroxide retention tank 2, has deposited in this hydrogen peroxide retention tank with oxygen water, it by volume pump in reaction box 5 pumping reaction needed for hydrogen peroxide;
One refrigeration plant, this refrigeration plant is made up of cooling fluid retention tank 3 and compressor 4, and compressor is used for the cooling fluid after by heat absorption and cools, and cooling fluid is cooled reaction box 5 by pipeline, makes the temperature of reaction in reaction box 5 control below 10 DEG C;
One intelligent controlling device, it is for controlling formic acid volume pump, hydrogen peroxide dosage pump, adding the work of volume pump and compressor, by controlling the unlatching of formic acid volume pump and hydrogen peroxide dosage pump to ensure raw material supply required in reaction box, produce sterilization and the peroxyformic acid needed for sterilization, by controlling to add volume pump, guarantee that the amount of the peroxyformic acid added in tap water meets the input dosage of sterilization and the 5-20PPM needed for sterilization, to ensure that the peroxyformic acid entered in tap water completed disinfection and is rapidly decomposed into water and carbonic acid gas in 60 seconds.
Described it is characterized in that is provided with liquid level sensor in described formic acid retention tank 1, with the amount of formic acid in convenient formic acid retention tank 1 lower than can to intelligent controlling device automatic alarm during set(ting)value.
In described hydrogen peroxide retention tank 2, liquid level sensor is installed, with the dioxygen water yield in convenient hydrogen peroxide retention tank 2 lower than can to intelligent controlling device automatic alarm during set(ting)value.
Be provided with temperature in described reaction box 5 and pass device and liquid level sensor, temperature sensor is used for the automatic control compressor work when the temperature in reaction box 5 is greater than set(ting)value, freezes to cooling fluid; Liquid level sensor, for controlling the amount of the peroxyformic acid in reaction box, controls formic acid volume pump when the peroxyformic acid of reaction box reaches set(ting)value and hydrogen peroxide dosage pump quits work automatically.
Described formic acid retention tank 1 is provided with sulfuric acid catalyst adding set 7.
Described sulfuric acid catalyst adding set 7 adds pump by catalyzer and add sulfuric acid catalyst in formic acid retention tank 1, and the add-on of catalyzer is the 0.1%-5% of formic acid quality, and formic acid concn is 20-40%.
In described reaction box, the volume ratio of reaction formic acid and hydrogen peroxide is 1:0.5-2, and temperature of reaction is no more than 10 DEG C, and optimal reaction temperature is 0-4 DEG C.
Beneficial effect of the present invention:
1. disinfecting/sterilizing efficiency is high: under 10ppm condition, and in 60S, bacterial destruction rate reaches 99.8%.
2. final meta-bolites is CO
2with H
2, there is not harmful product in O, can not produce corrosion to equipment, pipeline etc.
3. do not affect as temperature, turbidity etc. by water body environment and reduce disinfecting/sterilizing efficiency.
4. device structure is simple, service rating is little, compares electrolytic process, ultraviolet method, ozonizer etc. and can save space about 50%, save running cost 70 ~ 80%.
5. can meet the extensively water treatment field such as nature water factory, municipal wastewater treatment plant.
6. structure of the present invention is simple, manufactures, easy for installation, and maintenance operation cost is low.
Accompanying drawing explanation
Fig. 1 is system of the present invention composition structural representation.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment one.
As shown in Figure 1.
A kind of intelligent tap water is without chlorine disinfectant disinfection system, and it comprises:
One reaction box 5, this reaction box 5 is for generating the peroxyformic acid needed for disinfection, temperature sensor and liquid level sensor are installed in reaction solution, when the temperature of reaction in reaction box higher than set(ting)value (as 4 Celsius and time), then sensor notifies that intelligent controlling device starts compressor and freezes immediately, when the amount of the peroxyformic acid in reaction box 5 exceedes setting liquid level, liquid level sensor notifies that intelligent controlling device closes formic acid transferpump and hydrogen peroxide transferpump stops in reaction box, supply the raw material formic acid needed for reaction and hydrogen peroxide immediately;
One adds volume pump 6, this adds volume pump 6 for delivering in pending tap water by the peroxyformic acid generated in reaction box 5 by the requirement of technological process and dosage pump, the input amount adding volume pump is different according to water quality difference, general between 5-20PPM, add volume pump can singlely arrange, also can multiple stage arrange, as first killing of a larger dose can be carried out before original tap water enters factory, then once added again before tap water dispatches from the factory, to guarantee insect killing effect, can realize very soon killing Sum decomposition according to formic acid owing to crossing, therefore corrosion and damage can not be caused to transport pipe,
One formic acid retention tank 1, has deposited formic acid in this formic acid retention tank 1, it by volume pump in reaction box 5 pumping reaction needed for formic acid; In sour retention tank 1, a liquid level sensor can be installed, with the amount of formic acid in convenient formic acid retention tank 1 lower than can to intelligent controlling device automatic alarm during set(ting)value.Simultaneously in order to improve the growing amount of peroxyformic acid, can before formic acid enter reaction box reaction, make formic acid be acid by adding sulfuric acid as catalyzer, the add-on of sulfuric acid catalyst is the 0.1%-5% of formic acid quality, and formic acid concn is 20-40%; Experiment proves the reaction effect of peroxyformic acid can be made to reach 90% by the effect of low temperature and catalyzer.
One hydrogen peroxide retention tank 2, has deposited in this hydrogen peroxide retention tank with oxygen water, it by volume pump in reaction box 5 pumping reaction needed for hydrogen peroxide; In hydrogen peroxide retention tank 2, liquid level sensor is installed, with the dioxygen water yield in convenient hydrogen peroxide retention tank 2 lower than can to intelligent controlling device automatic alarm during set(ting)value.
One refrigeration plant 8, this refrigeration plant is made up of cooling fluid retention tank 3 and compressor 4, and compressor is used for the cooling fluid after by heat absorption and cools, and cooling fluid is cooled reaction box 5 by pipeline, make the temperature of reaction in reaction box 5 control below 10 DEG C, optimal reaction temperature is 0-4 DEG C;
One intelligent controlling device 9, it is for controlling formic acid volume pump, hydrogen peroxide dosage pump, adding the work of volume pump and compressor, by controlling the unlatching of formic acid volume pump and hydrogen peroxide dosage pump to ensure raw material supply required in reaction box, produce sterilization and the peroxyformic acid needed for sterilization, by controlling to add volume pump, guarantee that the amount of the peroxyformic acid added in tap water meets the input dosage of sterilization and the 5-20PPM needed for sterilization, to ensure that the peroxyformic acid entered in tap water completed disinfection and is rapidly decomposed into water and carbonic acid gas in 60 seconds.This intelligent controlling device 9 can adopt normal signal detection control circuit or its combination to be realized.
Principle of work of the present invention is:
Formic acid and hydrogen peroxide react and generate peroxyformic acid (or claiming peroxidation formic acid)
HCOOH+H
2O
2→HCOOOH+H
2O
HCOOOH→H
2O+CO
2↑
Peroxyformic acid is strong oxidizer, and its disinfection principle is: utilize its strong oxidizing property to destroy the cytolemma of bacteriophage and DNA, RNA to reach sterilization.
Peroxidation formic acid is colourless liquid, is dissolved in benzene, chloroform and water, ethanol, ether etc. miscible, volatile.
After peroxyformic acid contacting metal, metal oxide and reductibility thing or distillation time explosive, so the device such as storage, reaction, conveying in the embodiment of the present invention all adopts PP material.
Experiment proves, is only 20 ~ 30%, but (dissolves in H in formic acid in acid condition as only produced peroxyformic acid efficiency with formic acid and hydrogen peroxide reaction
2s0
4carry out catalysis), when cooling environment (temperature 0 ~ 4 DEG C), its reaction efficiency is 90%.
Embodiment two.
As shown in Figure 1.
A kind of Intellectualized sewage water is efficient without chlorine disinfectant method for disinfection, get 0.1-3 rise concentration be more than 95% sulfuric acid to add 100 liters of concentration be send in reaction box 5 after stirring in the formic acid of 30%, the hydrogen peroxide being 30% with 100 liters of (also can be 50 liters or 200 liters) concentration reacts within the scope of 0-4 DEG C, generate peroxyformic acid (through measuring and calculating reaction efficiency be 90%), peroxyformic acid is added in sewage by the dosage of 5-20PPM, to be rapidly dissolved in 60 seconds in water and to be decomposed into carbonic acid gas and water, in decomposition course, complete sterilization and sterilization, realize the clean of tap water.
Accommodation should be made according to the ratio of the present embodiment when the concentration of formic acid, hydrogen peroxide and sulfuric acid changes during concrete enforcement.
In each raw material and reaction member, corresponding sensor is all installed to provide required control judgment signal for intelligent controlling device, be both to improve sterilization effect, also can arrange at different positions as required and add volume pump 6, implement segmentation and add up to kill.
Peroxidation formic acid is colourless liquid, is dissolved in benzene, chloroform and water, ethanol, ether etc. miscible, volatile.After peroxyformic acid contacting metal, metal oxide and reductibility thing or distillation time explosive, so each storage case of the present invention, reaction box, pump, pipeline etc. all should adopt PP material to be manufactured.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (8)
1. intelligent tap water is without a chlorine disinfectant disinfection system, it is characterized in that it comprises:
One reaction box (5), this reaction box (5) is for generating the peroxyformic acid needed for disinfection;
One adds volume pump (6), and this adds volume pump (6) for delivering in pending tap water by the peroxyformic acid generated in reaction box (5) by the requirement of technological process and dosage pump;
One formic acid retention tank (1), has deposited formic acid in this formic acid retention tank (1), it by volume pump to the formic acid in reaction box (5) needed for pumping reaction;
One hydrogen peroxide retention tank (2), has deposited in this hydrogen peroxide retention tank with oxygen water, it by volume pump to the hydrogen peroxide in reaction box (5) needed for pumping reaction;
One refrigeration plant, this refrigeration plant has cooling fluid retention tank (3) and compressor (4) composition, compressor is used for the cooling fluid after by heat absorption and cools, and cooling fluid is cooled reaction box (5) by pipeline, makes the temperature of reaction in reaction box (5) control below 10 DEG C;
One intelligent controlling device, it is for controlling formic acid volume pump, hydrogen peroxide dosage pump, adding the work of volume pump and compressor, by controlling the unlatching of formic acid volume pump and hydrogen peroxide dosage pump to ensure raw material supply required in reaction box, produce sterilization and the peroxyformic acid needed for sterilization, by controlling to add volume pump, guarantee that the amount of the peroxyformic acid added in tap water meets the input dosage of sterilization and the 5-20PPM needed for sterilization, to ensure that the peroxyformic acid entered in tap water completed disinfection and is rapidly decomposed into water and carbonic acid gas in 60 seconds.
2. system according to claim 1, is characterized in that described it is characterized in that is provided with liquid level sensor in described formic acid retention tank (1), with the amount of formic acid in convenient formic acid retention tank (1) lower than can to intelligent controlling device automatic alarm during set(ting)value.
3. system according to claim 1, is characterized in that being provided with liquid level sensor in described hydrogen peroxide retention tank (2), with the dioxygen water yield in convenient hydrogen peroxide retention tank (2) lower than can to intelligent controlling device automatic alarm during set(ting)value.
4. system according to claim 1, it is characterized in that being provided with temperature in described reaction box (5) passes device and liquid level sensor, temperature sensor is used for the automatic control compressor work when the temperature in reaction box (5) is greater than set(ting)value, freezes to cooling fluid; Liquid level sensor, for controlling the amount of the peroxyformic acid in reaction box, controls formic acid volume pump when the peroxyformic acid of reaction box reaches set(ting)value and hydrogen peroxide dosage pump quits work automatically.
5. system according to claim 1, is characterized in that described formic acid retention tank (1) is provided with sulfuric acid catalyst adding set (7).
6. system according to claim 5, it is characterized in that described sulfuric acid catalyst adding set (7) adds pump by catalyzer and add sulfuric acid catalyst in formic acid retention tank (1), the add-on of catalyzer is the 0.1%-5% of formic acid quality, and formic acid concn is 20-40%.
7. system according to claim 1, it is characterized in that the volume ratio of reaction formic acid and hydrogen peroxide in described reaction box is 1:0.5-2, temperature of reaction is no more than 10 DEG C.
8. system according to claim 7, is characterized in that described temperature of reaction is 0-4 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401402.7A CN104944540A (en) | 2015-07-10 | 2015-07-10 | Intelligent disinfection and sterilization system for chloride-free tap water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401402.7A CN104944540A (en) | 2015-07-10 | 2015-07-10 | Intelligent disinfection and sterilization system for chloride-free tap water |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994020424A1 (en) * | 1993-03-12 | 1994-09-15 | Kemira Peroxides B.V. | Method for disinfecting water such as drain water in horticulture, and appliance to be used therewith |
| US6049002A (en) * | 1994-03-09 | 2000-04-11 | Kemira Chemicals B.V. | Method for the preparation of aqueous solutions containing performic acid as well as their use |
| CN1709061A (en) * | 2005-06-30 | 2005-12-21 | 兰州益生化工有限公司 | Compound peroxide acid sterilizing agent and its processing method |
| CN2923680Y (en) * | 2006-05-19 | 2007-07-18 | 淄博华润科贸有限责任公司 | Stable chlorine dioxide fully-automatic activating medicine feeder |
| CN101268045A (en) * | 2005-09-13 | 2008-09-17 | 凯米罗总公司 | Process for the preparation of peroxy acids |
| CN104973666A (en) * | 2015-07-10 | 2015-10-14 | 江苏鸿佑环保有限公司 | Intelligent sewage chlorine-free disinfection sterilization system |
-
2015
- 2015-07-10 CN CN201510401402.7A patent/CN104944540A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994020424A1 (en) * | 1993-03-12 | 1994-09-15 | Kemira Peroxides B.V. | Method for disinfecting water such as drain water in horticulture, and appliance to be used therewith |
| US6049002A (en) * | 1994-03-09 | 2000-04-11 | Kemira Chemicals B.V. | Method for the preparation of aqueous solutions containing performic acid as well as their use |
| CN1709061A (en) * | 2005-06-30 | 2005-12-21 | 兰州益生化工有限公司 | Compound peroxide acid sterilizing agent and its processing method |
| CN101268045A (en) * | 2005-09-13 | 2008-09-17 | 凯米罗总公司 | Process for the preparation of peroxy acids |
| CN2923680Y (en) * | 2006-05-19 | 2007-07-18 | 淄博华润科贸有限责任公司 | Stable chlorine dioxide fully-automatic activating medicine feeder |
| CN104973666A (en) * | 2015-07-10 | 2015-10-14 | 江苏鸿佑环保有限公司 | Intelligent sewage chlorine-free disinfection sterilization system |
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Application publication date: 20150930 |
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