CN104961209A - Efficient chloride-free disinfection system for waste water - Google Patents
Efficient chloride-free disinfection system for waste water Download PDFInfo
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- reaction box
- formic acid
- retention tank
- hydrogen peroxide
- disinfection
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 48
- 239000002351 wastewater Substances 0.000 title claims abstract description 13
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 53
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 235000019253 formic acid Nutrition 0.000 claims abstract description 27
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 6
- SCKXCAADGDQQCS-UHFFFAOYSA-N Performic acid Chemical compound OOC=O SCKXCAADGDQQCS-UHFFFAOYSA-N 0.000 claims description 14
- 239000000460 chlorine Substances 0.000 claims description 14
- 229910052801 chlorine Inorganic materials 0.000 claims description 14
- 230000014759 maintenance of location Effects 0.000 claims description 14
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 12
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- 239000012809 cooling fluid Substances 0.000 claims description 12
- 239000000645 desinfectant Substances 0.000 claims description 12
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- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 230000000249 desinfective effect Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
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- 230000002147 killing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- 208000002177 Cataract Diseases 0.000 description 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 206010036631 Presenile dementia Diseases 0.000 description 1
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- AYNHALSUAFCZMI-UHFFFAOYSA-N acetonitrile;chloromethane Chemical compound ClC.CC#N AYNHALSUAFCZMI-UHFFFAOYSA-N 0.000 description 1
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- 150000001299 aldehydes Chemical class 0.000 description 1
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- 239000007844 bleaching agent Substances 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- MOIPGXQKZSZOQX-UHFFFAOYSA-N carbonyl bromide Chemical compound BrC(Br)=O MOIPGXQKZSZOQX-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- LFHISGNCFUNFFM-UHFFFAOYSA-N chloropicrin Chemical compound [O-][N+](=O)C(Cl)(Cl)Cl LFHISGNCFUNFFM-UHFFFAOYSA-N 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 description 1
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- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- CUILPNURFADTPE-UHFFFAOYSA-N hypobromous acid Chemical compound BrO CUILPNURFADTPE-UHFFFAOYSA-N 0.000 description 1
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- -1 small molecules hydrogen peroxide Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
An efficient chloride-free disinfection system for waste water is characterized by comprising a formic acid storing tank (1), a hydrogen peroxide storing tank (2), a reaction box (5) and an adding measuring pump (6), wherein the input end of the adding measuring pump (6) is connected with the output end of the reaction box (5), the output end of the adding measuring pump (6) extends into the waste water by virtue of a water pipe, peroxide formic acid is quickly dissolved into the water, completes disinfection within 60 seconds and is quickly 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 storing tank (1) and the output end of the hydrogen peroxide storing tank (2). The system provided by the invention has the advantages of high disinfection efficiency, no residue, low running cost and convenient maintenance.
Description
Technical field
The present invention relates to a kind of sewage disposal technology, especially a kind of urban sewage treatment technology, specifically a kind of wastewater efficient 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 municipal sewage treatment exist residual large, efficiency is low, secondary pollution is difficult to solve, high in cost of production series of problems, designs a kind of noresidue, efficient wastewater efficient fast without chlorine disinfectant disinfection system.
Technical scheme of the present invention is:
A kind of wastewater efficient is without chlorine disinfectant disinfection system, it is characterized in that it comprises formic acid retention tank 1, hydrogen peroxide retention tank 2, reaction box 5 and adds volume pump 6, the described output terminal adding the input termination reaction box 5 of volume pump 6, the peroxyformic acid that reaction box generates with the dosage of 5-40PPM by the output terminal adding volume pump 6 is mixed in wastewater inlet end by water pipe, peroxyformic acid dissolves in fast in sewage and in 60 seconds, completes disinfection and be rapidly decomposed into water and carbonic acid gas, the input termination formic acid retention tank 1 of described reaction box 5 and the output terminal of hydrogen peroxide retention tank 2.
Described reaction box 5 is connected with refrigeration system.
Described refrigeration system is made up of cooling fluid retention tank 3 and compressor 4, and cooling fluid flows out from cooling fluid retention tank 3, and pile warp reaction box 5 enters after compressor 4 compresses heat release after absorbing heat and again enters in cooling fluid retention tank 3.
Described reaction box 5 is provided with catalyzer adding set 7.
The add-on of described 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 formic acid and hydrogen peroxide is 1:0.5-2, and temperature of reaction is no more than 10 DEG C.
Described temperature of reaction is 0-4 DEG C.
Beneficial effect of the present invention:
1. disinfecting/sterilizing efficiency is high: under 5-40ppm 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 sewage disposal, 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 wastewater efficient is without chlorine disinfectant disinfection system, it comprises formic acid retention tank 1, hydrogen peroxide retention tank 2, reaction box 5 and adds volume pump 6, as Fig. 1, the described output terminal adding the input termination reaction box 5 of volume pump 6, the output terminal adding volume pump 6 to be stretched in sewage by water pipe and quick being dissolved in sewage by the peroxyformic acid generated in reaction box 5 completed disinfection and be rapidly decomposed into water and carbonic acid gas, the input termination formic acid retention tank 1 of described reaction box 5 and the output terminal of hydrogen peroxide retention tank 2 in 60 seconds.In order to improve the formation efficiency of peroxyformic acid, the present invention also devises for reaction box 5 refrigeration system be made up of compressor 4 and cooling fluid retention tank 3 in the specific implementation, cooling fluid flows out from cooling fluid retention tank 3, pile warp reaction box 5 enters after compressor 4 compresses heat release after absorbing heat and again enters in cooling fluid retention tank 3, the working temperature of reaction box 5 is no more than 10 DEG C, optimal working temp is 0-4 DEG C, simultaneously in order to improve the formation efficiency of peroxyformic acid, utilize sulfuric acid as catalyzer, formic acid retention tank 1 is joined in advance by sulfuric acid catalyst adding set 7, according to the cleanliness factor of former water and the consumption of peroxyformic acid, the add-on of catalyst sulfuric acid (concentration is more than 95%) is the 0.1%-5% of formic acid quality, formic acid concn is 20-40%.In order to improve disinfection effect, when specifically implementing, can set up and multiplely add volume pump 6, segmentation adds up sterilization and disinfection.
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 based on wastewater efficient without the wastewater efficient of chlorine disinfectant disinfection system 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 after stirring under normal temperature 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 5-40PPM, to be rapidly dissolved in 60 seconds in water and to be decomposed into carbonic acid gas and water, sterilization and sterilization is completed in decomposition course, realize the clean of sewage.
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.
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 (7)
1. a wastewater efficient is without chlorine disinfectant disinfection system, it is characterized in that it comprises formic acid retention tank (1), hydrogen peroxide retention tank (2), reaction box (5) and add volume pump (6), the described output terminal adding the input termination reaction box (5) of volume pump (6), the peroxyformic acid that reaction box generates with the dosage of 5-40PPM by the output terminal adding volume pump (6) is mixed in wastewater inlet end by water pipe, peroxyformic acid dissolves in fast in sewage and in 60 seconds, completes disinfection and be rapidly decomposed into water and carbonic acid gas, input termination formic acid retention tank (1) of described reaction box (5) and the output terminal of hydrogen peroxide retention tank (2).
2. system according to claim 1, is characterized in that described reaction box (5) is connected with refrigeration system.
3. system according to claim 2, it is characterized in that described refrigeration system is made up of cooling fluid retention tank (3) and compressor (4), cooling fluid flows out from cooling fluid retention tank (3), again enters in cooling fluid retention tank (3) after entering compressor (4) compression heat release after pile warp reaction box (5) heat absorption.
4. system according to claim 1, is characterized in that described formic acid retention tank (1) is provided with sulfuric acid catalyst adding set (7).
5. system according to claim 4, it is characterized in that the add-on of described catalyzer is the 0.1%-5% of formic acid quality, formic acid concn is 20-40%.
6. system according to claim 1, it is characterized in that the volume ratio of formic acid and hydrogen peroxide in described reaction box is 1:0.5-2, temperature of reaction is no more than 10 DEG C.
7. system according to claim 6, is characterized in that described temperature of reaction is 0-4 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117587A (en) * | 2017-04-18 | 2017-09-01 | 鲁西化工集团股份有限公司 | The add-on system and technique of a kind of stabilizer |
| CN109002688A (en) * | 2018-09-06 | 2018-12-14 | 清华大学 | Based on ozonization/disinfection by ultraviolet light/chlorination method for treating water |
| CN115784393A (en) * | 2022-11-30 | 2023-03-14 | 广东省科学院生物与医学工程研究所 | Use of performic acid solutions for producing disinfectants |
| CN115893610A (en) * | 2022-11-30 | 2023-04-04 | 广东省科学院生物与医学工程研究所 | Preparation method and application of novel environment-friendly water purifying agent |
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| CN107117587A (en) * | 2017-04-18 | 2017-09-01 | 鲁西化工集团股份有限公司 | The add-on system and technique of a kind of stabilizer |
| CN109002688A (en) * | 2018-09-06 | 2018-12-14 | 清华大学 | Based on ozonization/disinfection by ultraviolet light/chlorination method for treating water |
| CN115784393A (en) * | 2022-11-30 | 2023-03-14 | 广东省科学院生物与医学工程研究所 | Use of performic acid solutions for producing disinfectants |
| CN115893610A (en) * | 2022-11-30 | 2023-04-04 | 广东省科学院生物与医学工程研究所 | Preparation method and application of novel environment-friendly water purifying agent |
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Application publication date: 20151007 |