CN104310516B - The burst of reply tap water causes the aeration stripping system and method smelling Substances Pollution - Google Patents
The burst of reply tap water causes the aeration stripping system and method smelling Substances Pollution Download PDFInfo
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- CN104310516B CN104310516B CN201410591530.8A CN201410591530A CN104310516B CN 104310516 B CN104310516 B CN 104310516B CN 201410591530 A CN201410591530 A CN 201410591530A CN 104310516 B CN104310516 B CN 104310516B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
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Abstract
The invention discloses a kind of tackle tap water burst cause the aeration stripping system and method smelling Substances Pollution, this system comprises the aeration post for simulating water body, the bottom of aeration post is provided with bottom support bracket, the sidewall of aeration post sets gradually from bottom to up water outlet and some thief holes, aeration head is provided with in aeration post, and aeration head is arranged on bottom support bracket, aeration head is connected with the pneumatic pump be arranged on outside water body by aeration stripping flexible pipe.The present invention makes to cause by aeration and smells material and to be transferred to gas phase from aqueous phase and to remove, and can tackle the ground depth, dimethyl iso-borneol etc. that exceed standard in tap water and cause and smell material; Required gas-water ratio depends in water the times of ultra standard causing and smell material; The present invention is simple to operate, and running cost is cheap, can not affect the normal operation of waterworks, is convenient to water factory's application, can efficiently, safety, tackle tap water economically and happen suddenly and differently smell problem.
Description
Technical field
The invention belongs to water treatment field, be specifically related to a kind of tackle tap water burst cause the aeration stripping system and method smelling Substances Pollution.
Background technology
Smelling taste is a sensory properties index important in water quality standard for drinking water, although the prescribed limits not about this index in quality standard for surface water; But one when drinking water source be subject to containing a large amount of cause the pollution of smelling material time, the limitation of conventional water-purifying process causes tap water to have smelling the water quality grade of taste exception, and City Water Supply Enterprise just has to face process and causes a difficult problem of smelling material containing what exceed standard.Can be used for the method that tap water smells taste process at present and mainly contain powder electroless plating method and chemical oxidizing agent oxidation style two kinds, but there is the high or inefficient problem of cost all in various degree.
Powder electroless plating method utilizes the porosity characteristic of gac prosperity to make to cause and smell species adsorbs in solid surface, thus reaches to be separated and cause the object of smelling material.The main drawback of this method is: do not have good Powdered Activated Carbon recovery and reusing and recycling method at present, can only single use, costly, is not suitable for municipal tap water factory, especially big-and-middle-sized waterworks.
Potassium permanganate oxidation method utilizes the oxidisability of itself to carry out causing in oxidizing water to smell material, make it reach the object of decomposition.The shortcoming of this method is that the oxidisability of potassium permanganate is strong, causes the removal effect of smelling material poor to typical case in water; If when dosage is too much, remaining potassium permanganate can continue react with other materials in the pipe network of municipal tap water, makes the appearance of user's water,tap be tawny, and a series of adverse consequences such as easily make dress material painted; The price of food grade potassium permanganate is higher.
Dioxide peroxide has stronger oxidisability, is a kind of wide-spectrum bactericide, still has very strong sterilizing ability in the basic conditions, also have good killing action to algae.Dioxide peroxide makes water-band have the material of mud raw meat strange taste as the different borneol of 2-methyl etc. to some, has certain removal effect.But the main drawback of this method is liquid and the gas extremely unstable of dioxide peroxide, just may explode when concentration is 10% in atmosphere, up to the present, all effort of dioxide peroxide liquefied storage are not all had extremely successful, can only in the on-the-spot interim preparation of use.In addition, the dioxide peroxide be added to the water has 50% ~ 70% to change ClO into
2 -, ClO
3 -, these inorganic byproduct also can cause infringement red blood cell, disturb the Absorption And Metabolism to iodine, make Blood Cholesterol rising etc. be unfavorable for healthy problem.
The oxidation capacity of ozone is relatively strong, is slightly better than potassium permanganate and dioxide peroxide although remove except causing the ability of smelling material; But there is the deficiency that in situ preparation difficulty, use cost are high.
In water, typical case causes and smells material such as ground depth and dimethyl iso-borneol and belong to half volatile material, the method for aeration stripping can be adopted in theory to remove it, and aeration stripping systems approach is easy to implement, with low cost; But the patent application had not yet to see in this respect and mandate.
Summary of the invention
The object of the invention is to for existing deficiency of smelling taste control techniques, provide a kind of tackle tap water burst cause the aeration stripping system and method smelling Substances Pollution, with realize water body sudden smell taste pollute time, economic, safety, efficiently guarantee Urban water supply normal water supply, source water cannot be tackled cause the excessive problem of smelling species contamination to solve current tap water conventional treatment process.
For achieving the above object, the present invention adopts following technical scheme:
The burst of reply tap water causes the aeration stripping system of smelling Substances Pollution, comprise the aeration post for simulating water body, the bottom of aeration post arranges bottom support bracket, the sidewall of aeration post sets gradually from bottom to up water outlet and some thief holes, aeration head is provided with in aeration post, and aeration head is arranged on bottom support bracket, aeration head is connected with the pneumatic pump be arranged on outside water body by aeration stripping flexible pipe.
The present invention further improves and is, micro-hole diameter of aeration head is 1mm ~ 3mm, and its paving location is 40cm apart from water surface elevation.
The present invention further improves and is, the sidewall of aeration post is provided with from bottom to up the first water outlet and the second water outlet, wherein, and the first water outlet distance 30cm place, aeration column bottom, the second water outlet distance 10cm place, aeration column bottom.
The burst of reply tap water causes the aeration stripping method of smelling Substances Pollution, comprises the following steps:
When water body burst cause smell Substances Pollution time, build an aeration stripping system:
First install a pneumatic pump outward at water body, measure aeration rate with gas meter, unit is L/min;
Then a bottom support bracket is installed in water bottom and is arranged on the aeration post on bottom support bracket, the sidewall of aeration post sets gradually from bottom to up water outlet and some thief holes, and an aeration head is set in aeration post, and aeration head is arranged on bottom support bracket, aeration head is connected with the pneumatic pump be arranged on outside water source by aeration stripping flexible pipe;
After pneumatic pump inserts power initiation, by adjustment aeration head go out airshed, the water source smelling class material is caused to burst and carries out aeration stripping process, wherein, cause and smell class material and comprise ground depth, dimethyl iso-borneol, sulfur alcohol and NSC 97324, the concentration of class material in water source and the corresponding limit value of national Drinking Water hygienic practice is smelt, gas-water ratio required in adjustment water body in real time according to causing.
The present invention further improves and is, in water source, ground depth and dimethyl iso-borneol concentration do not exceed the occasion of 40ng/L and 20ng/L respectively, namely in source water, ground depth and dimethyl iso-borneol concentration over-standard multiple are no more than the occasion of 3 times and 1 times respectively, and the gas-water ratio adopted is 30.
The present invention further improves and is, the sidewall of aeration post is provided with from bottom to up the first water outlet and the second water outlet, wherein, and the first water outlet distance 30cm place, aeration column bottom, the second water outlet distance 10cm place, aeration column bottom.
Compared with prior art, the present invention has following technique effect:
1, existing experimental result shows, aeration stripping process can successfully manage ground depth in tap water, dimethyl iso-borneol etc. and cause and smell material;
2, when comparatively economical gas-water ratio 30, the 40ng/L ground depth exceeded standard in water and 20ng/L dimethyl iso-borneol can be removed by application aeration stripping method preferably;
3, aeration stripping system device, simple to operate, running cost is cheap, can not affect waterworks water production rate, is convenient to water factory's application;
4, water body can be realized efficiently, safely, economically and cause the urban safety water supply of smelling when material exceeds standard, also can be applicable to Treatment of Industrial Water.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention tackles that tap water burst causes the aeration stripping system of smelling Substances Pollution.
Wherein: 1, aeration post; 2, aeration head; 3, the first thief hole; 4, the second thief hole; 5, water outlet; 6, bottom support bracket; 7, pneumatic pump; 8, aeration stripping flexible pipe.
Fig. 2 is the graph of a relation of ground depth residual concentration and gas-water ratio in water.
Fig. 3 is the graph of a relation of dimethyl iso-borneol residual concentration and gas-water ratio in water.
Fig. 4 is the enforcement schematic diagram of aeration stripping device in source water.
Wherein: 11, gas blower; 12, aeration flexible pipe; 13, seal tube; 14, fence.
Fig. 5 is the enforcement schematic diagram of water purification plant's internal mix pond or clean water basin aeration stripping device.
Wherein: 11, gas blower; 12, aeration flexible pipe; 13, seal tube; 15, buttress.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
See Fig. 1, the present invention tackles tap water burst and causes the aeration stripping system of smelling Substances Pollution, comprise the aeration post 1 for simulating water body, the bottom of aeration post 1 arranges bottom support bracket 6, the sidewall of aeration post 1 sets gradually from bottom to up water outlet 5 and some thief holes, be provided with aeration head 2 in aeration post 1, and aeration head 2 is arranged on bottom support bracket 6, aeration head 2 is connected with the pneumatic pump 7 be arranged on outside water body by aeration stripping flexible pipe 8.
Wherein, micro-hole diameter of aeration head 2 is 1mm ~ 3mm, and its paving location is 40cm apart from water surface elevation.The sidewall of aeration post 1 is provided with from bottom to up the first water outlet 3 and the second water outlet 4, wherein, the first water outlet 3 is apart from 30cm place bottom aeration post 1, and the second water outlet 4 is apart from 10cm place bottom aeration post 1.
The present invention tackles tap water burst and causes the aeration stripping method of smelling Substances Pollution, comprises the following steps:
When water body burst cause smell Substances Pollution time, build an aeration stripping system:
First install a pneumatic pump 7 outward at water body, measure aerate flux with gas meter, unit is L/min;
Then actual water body is simulated with aeration post 1, a bottom support bracket 6 is installed in aeration column bottom, the sidewall of aeration post 1 sets gradually from bottom to up water outlet 5, first thief hole 3 and the second thief hole 4, and an aeration head 2 is set in aeration post 1, and aeration head 2 is arranged on bottom support bracket 6, aeration head 2 is connected with the pneumatic pump 7 be arranged on outside water source by aeration stripping flexible pipe 8;
After pneumatic pump 7 inserts power initiation, by adjustment aeration head 2 go out airshed, the water source smelling class material is caused to burst and carries out aeration stripping process, wherein, cause and smell class material and comprise ground depth and dimethyl iso-borneol, the concentration of class material in water body is smelt, gas-water ratio required in adjustment water source in real time according to causing.
Below in conjunction with specific embodiment, the present invention is described in further details:
1, the present invention adopt aeration stripping method to process respectively to cause smell material ground depth and dimethyl iso-borneol concentration be the water body of 25ng/L time, be under the condition of 3 in gas-water ratio, second thief hole 4 and first thief hole 3 at 10cm and 30cm place above bottom aeration post 1, the clearance of ground depth is respectively 20.82% and 9.55%; Be under the condition of 3 in gas-water ratio, second thief hole 4 and first thief hole 3 at 10cm and 30cm place above bottom aeration post 1, the clearance of dimethyl iso-borneol is respectively 7.67% and 9.76%.
2, the present invention adopt aeration stripping method to process respectively to cause smell material ground depth and dimethyl iso-borneol concentration be the water body of 50ng/L time, be under the condition of 3 in gas-water ratio, second thief hole 4 and first thief hole 3 at 10cm and 30cm place above bottom aeration post 1, the clearance of ground depth is respectively 17.72% and 15.63%; Be under the condition of 3 in gas-water ratio, second thief hole 4 and first thief hole 3 at 10cm and 30cm place above bottom aeration post 1, the clearance of dimethyl iso-borneol is respectively 6.28% and 14.47%.
3, the present invention adopt aeration stripping method to process respectively to cause smell material ground depth and dimethyl iso-borneol concentration be the water body of 100ng/L time, be under the condition of 3 in gas-water ratio, second thief hole 4 and first thief hole 3 at 10cm and 30cm place above bottom aeration post 1, the clearance of ground depth is respectively 11.96% and 9.12%; Be under the condition of 3 in gas-water ratio, second thief hole 4 and first thief hole 3 at 10cm and 30cm place above bottom aeration post 1, the clearance of dimethyl iso-borneol is respectively 6.05% and 3.86%.
4, the present invention is when adopting aeration stripping method process ground depth and dimethyl iso-borneol concentration to be respectively the water of 25ng/L, 50ng/L, 100ng/L, when gas-water ratio is respectively 6,9,15,30,60, the removal effect of ground depth and dimethyl iso-borneol respectively as shown in Figures 2 and 3.
As can be seen from above-mentioned laboratory water distribution test-results, for ground depth and dimethyl iso-borneol concentration be respectively 25ng/L, 50ng/L, 100ng/L by causing the water body smelling Substances Pollution, when adopting aeration stripping method to process it, only as the non-25ng/L of dimethyl iso-borneol concentration in former water, after process, in water, dimethyl iso-borneol residual concentration remains on about 12ng/L; Cause the residual concentration smelling material in water after all the other process all to reduce with the increase of gas-water ratio.According to gas-water ratio 30 economic suitable in Practical Project, adopt simplex aeration stripping to remove in water to cause when smelling material, in former water, ground depth and dimethyl iso-borneol concentration respectively should not higher than 40ng/L and 20ng/L; When ground depth in former water and dimethyl iso-borneol concentration are respectively higher than 40ng/L and 20ng/L, aeration stripping and other should be taked to smell taste measure of control and to match, to guarantee that effluent quality is up to standard.
5, the present invention tackles tap water burst and causes the aeration stripping system and method smelling Substances Pollution, and the implementation step in actual engineering of water treatment is as follows
The present invention is applicable to the dissimilar application scenario such as source water inside and water factory inside, should take different embodiments for dissimilar application scenario.
1) for source water internal implementation mode:
For source water inside, the tap water burst aeration stripping system and method embodiment caused when smelling Substances Pollution is: aerating apparatus should in intake front.According to source water interior environmental conditions, fence 14 is set on intake both sides, guides current to pass through to flow into intake from the water-in that fence 14 is formed, aerating apparatus is set in water inlet.Generally can lay effective aerating apparatus in certain altitude place bottom direct range source water, concrete height is advisable with 2m, in order to avoid cause benthal deposit to float affect water quality, and be connected with gas blower 11 on the bank by aerating apparatus by seal tube 13, and seal tube 13 is connected with the aeration flexible pipe 12 be arranged in fence 14; Should according to the stripping characteristic of respective substance in actual enforcement, reasonable adjusting aerate flux, effectively removes to cause and smells material, ensure drinking water source water quality safety.
2) for water factory's internal implementation mode:
For water factory inside, the tap water burst aeration stripping system and method embodiment caused when smelling Substances Pollution is: aerating apparatus can be arranged at water factory's mixing pit or clean water basin.
Scheme one: according to water factory's internal medium, aerating apparatus can be set at water factory's mixing pit, generally directly can lay effective aerating apparatus apart from At The Height suitable bottom mixing pit, concrete height is advisable with 0.2m, so that the I&M of aerating apparatus upgrades, wherein, installs aeration flexible pipe 12 in water factory's mixing pit by some buttresses 15, aerating apparatus is connected with gas blower 11 on the bank by seal tube 13 by aeration flexible pipe 12; Should according to the physics-chem characteristic of respective substance in actual enforcement, reasonable adjusting aerate flux, effectively removes to cause and smells material.
Scheme two: according to water factory's internal medium, also can arrange aerating apparatus in water factory's clean water basin water inlet.Generally can directly bottom distance clean water basin 0.2m At The Height lay effective aerating apparatus, wherein, install aeration flexible pipe 12 in water factory's mixing pit by some buttresses 15, aerating apparatus is connected with gas blower 11 on the bank by seal tube 13 by aeration flexible pipe 12; Should according to the physics-chem characteristic of respective substance in actual enforcement, reasonable adjusting aerate flux, effectively removes to cause and smells material.
Claims (1)
1. tackle tap water burst and cause the aeration stripping method of smelling Substances Pollution, it is characterized in that, comprise the following steps:
When water body burst cause smell Substances Pollution time, build an aeration stripping system:
First install a pneumatic pump (7) outward at water body, measure aeration rate with gas meter, unit is L/min;
Then at the aeration post (1) that water bottom is installed a bottom support bracket (6) and is arranged on bottom support bracket (6), the sidewall of aeration post (1) sets gradually from bottom to up water outlet (5) and some thief holes, and an aeration head (2) is set in aeration post (1), and aeration head (2) is arranged on bottom support bracket (6), aeration head (2) is connected with the pneumatic pump be arranged on outside water source (7) by aeration stripping flexible pipe (8);
After pneumatic pump (7) inserts power initiation, by adjustment aeration head (2) go out airshed, the water source smelling class material is caused to burst and carries out aeration stripping process, wherein, cause and smell class material and comprise ground depth, dimethyl iso-borneol, sulfur alcohol and NSC 97324, the concentration of class material in water source and the corresponding limit value of national Drinking Water hygienic practice is smelt, gas-water ratio required in adjustment water body in real time according to causing;
In water source, ground depth and dimethyl iso-borneol concentration do not exceed the occasion of 40ng/L and 20ng/L respectively, and namely in source water, ground depth and dimethyl iso-borneol concentration over-standard multiple are no more than the occasion of 3 times and 1 times respectively, and the gas-water ratio adopted is 30;
The sidewall of aeration post (1) is provided with from bottom to up the first water outlet (3) and the second water outlet (4), wherein, 30cm place, first water outlet (3) distance aeration post (1) bottom, 10cm place, the second water outlet (4) distance aeration post (1) bottom.
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| CN201410591530.8A CN104310516B (en) | 2014-10-28 | 2014-10-28 | The burst of reply tap water causes the aeration stripping system and method smelling Substances Pollution |
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| CN201410591530.8A CN104310516B (en) | 2014-10-28 | 2014-10-28 | The burst of reply tap water causes the aeration stripping system and method smelling Substances Pollution |
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Effective date of registration: 20210112 Address after: 210017 1021, Nanyuan building, 58 nanhu road, Jianye District, Nanjing City, Jiangsu Province Patentee after: Nanjing yangshuiyuan Environmental Technology Co.,Ltd. Address before: 710055 No. 13, Yanta Road, Shaanxi, Xi'an Patentee before: XI'AN University OF ARCHITECTURE & TECHNOLOGY |