CN103523975A - Method for treating emergency odor pollution by combining submerged microfiltration/ultrafiltration membrane technology - Google Patents
Method for treating emergency odor pollution by combining submerged microfiltration/ultrafiltration membrane technology Download PDFInfo
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- CN103523975A CN103523975A CN201310495020.6A CN201310495020A CN103523975A CN 103523975 A CN103523975 A CN 103523975A CN 201310495020 A CN201310495020 A CN 201310495020A CN 103523975 A CN103523975 A CN 103523975A
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Abstract
The invention discloses a method for treating emergency odor pollution by combining a submerged microfiltration/ultrafiltration membrane technology, relating to a method for treating emergency pollution of drink water. The method aims to solve the problems that the existing submerged microfiltration/ultrafiltration membrane can not thoroughly remove small-molecular odorous substances and cause the incapability of handling with the emergency odor pollution to drink water. The method comprises the steps of: 1. when the concentration of odorous substances in inflowing water is twice to three times as much as a threshold value, opening a membrane tank aeration system; 2. when the concentration of the odorous substances in inflowing water is three to fifteen times as much as a threshold value, feeding powdered activated carbon, potassium permanganate or chlorine gas according to different odorous substances; 3. when the concentration of the odorous substances in inflowing water is one to fifteen times as much as a threshold value and the combined pollution of a plurality of odorous substances exist, firstly feeding potassium permanganate or chlorine gas into a pretreatment unit, then feeding powdered activated carbon into a membrane tank. The method has the advantages that I. the concentration of the treated odorous substances can be reduced by 70%-95%; II. the response speed is high; and III. the method has strong flexibility. The method can be used for treating emergency odorous pollution.
Description
Technical field
The present invention relates to a kind of method of processing drinking water burst Pollution.
Background technology
The taste of smelling of tap water can be directly by user awareness, and it has a strong impact on water quality and the acceptability of tap water.The taste of smelling of tap water is mainly derived from the micro-volatility containing in water and smells taste material, and these are smelt taste material and are mainly derived from microbial metabolites, mankind's activity waste discharge.The more common taste material of smelling has native smelly element, dimethyl iso-borneol and mercaptan sulfur ethers to smell taste material at present.In tap water, smell the fluctuation of taste material concentration larger, there is sudden and randomness.In May, 2007, by mercaptan sulfur ethers, smell the Taihu Lake tap water crisis that taste material causes and cause serious societal consequence and detrimentally affect.So the smelling taste problem and need give enough attention of tap water.
Immersed microfiltration/ultra-filtration membrane technique can not only effectively be removed particulate matter and pathogenic micro-organism, and energy consumption is low simultaneously, is suitable for water plant's extension and reconstruction, is a kind of drinking water treatment technique with good application prospect.At present, existing tens water factories of China adopt this technique.But because existing micro-filtration/ultra-filtration membrane cannot be held back small-molecule substance, and smell taste material, be small molecules, thus existing immersed microfiltration/ultra-filtration membrane technique in tap water to smell taste material removal effect not good.
Summary of the invention
The object of the invention is to solve existing immersed microfiltration/ultra-filtration membrane and remove not good and cause tackling the sudden problem of smelling taste pollution of tap water smelling taste material small molecules, and the combination providing immersed microfiltration/ultra-filtration membrane art breading should acutely be smelt the method that taste pollutes.
In conjunction with immersed microfiltration/ultra-filtration membrane art breading, should be acute smell the method that taste pollutes, when water inlet, smell taste material concentration while being 1 times～3 times of threshold values, specifically carry out according to the following steps:
1. open ultrafiltration membrane cisterna aerating system, regulating the ratio of air water is (1～10): 1, make aerating system continuous aeration stripping; 2. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
In conjunction with immersed microfiltration/ultra-filtration membrane art breading, should be acute smell the method that taste pollutes, when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being native smelly element and dimethyl iso-borneol, specifically carries out according to the following steps:
1. to the Powdered Activated Carbon that adds 10mg/L～50mg/L in water inlet pipe or membrane cisterna; 2. intermittently open membrane cisterna aerating system, regulating the ratio of air water is (3～5): 1, make aerating system intermittent aeration; 3. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being (6～15): 1.
In conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes, when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being the mixture of thio-alcohol material, sulphur ether material or thio-alcohol material/sulphur ether material, specifically carries out according to the following steps:
1. to the chlorine that adds 0.5mg/L～2mg/L potassium permanganate or 1mg/L～3mg/ in water inlet pipe or membrane cisterna; 2. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
In conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes, when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being the compound substance of native smelly element, dimethyl iso-borneol and mercaptan, sulphur ether material, specifically carries out according to the following steps:
1. to the chlorine that adds 0.5mg/L～2mg/L potassium permanganate or 1mg/L～3mg/ in micro-filtration/ultra-filtration membrane pretreatment unit, make water from micro-filtration/ultra-filtration membrane pretreatment unit to entering the reaction times that has 5min～180min membrane cisterna; 2. to the Powdered Activated Carbon that adds 10mg/L～50mg/L in membrane cisterna; 3. intermittently open membrane cisterna aerating system, regulating the ratio of air water is (3～5): 1, make aerating system intermittent aeration; 4. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being (6～15): 1.
Advantage of the present invention: the method for one, using combination immersed microfiltration/ultra-filtration membrane art breading of the present invention should acutely smell taste pollution is processed and should acutely be smelt taste pollution, and the taste material concentration of smelling after processing has reduced by 70～95%; Two, fast response time of the present invention, aerating system can be opened at any time, and Powdered Activated Carbon and oxygenant that the present invention uses can complete and add within very short time, so can successfully manage the sudden taste of smelling, pollute; Three, the present invention has very strong handiness, for different concns smell taste material, can control dosage and the removal of aeration rate, Powdered Activated Carbon and oxygenant and smell taste material.
The present invention can process and should acutely smell taste pollution.
Embodiment
Embodiment one: present embodiment is should be acute smell in conjunction with immersed microfiltration/ultra-filtration membrane art breading the method that taste pollutes, smells taste material concentration while being 1 times～3 times of threshold values when water inlet, specifically carries out according to the following steps:
1. open ultrafiltration membrane cisterna aerating system, regulating the ratio of air water is (1～10): 1, make aerating system continuous aeration stripping; 2. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard;
The advantage of present embodiment: one, use combination immersed microfiltration/ultra-filtration membrane art breading of present embodiment to answer the acute method processing that smell taste pollution to answer the acute taste of smelling to pollute, the taste material concentration of smelling after processing has reduced by 70%～95%; Two, present embodiment fast response time, aerating system can be opened at any time, and Powdered Activated Carbon and oxygenant that present embodiment is used can complete and add within very short time, so can successfully manage the sudden taste of smelling, pollute; Three, present embodiment has very strong handiness, for different concns smell taste material, can control dosage and the removal of aeration rate, Powdered Activated Carbon and oxygenant and smell taste material.
Present embodiment can be processed and should acutely smell taste pollution.
Embodiment two: present embodiment and embodiment one difference are: open ultrafiltration membrane cisterna aerating system 1., regulating the ratio of air water is (2～8): 1, make aerating system continuous aeration stripping.Other steps are identical with embodiment one.
Embodiment three: present embodiment is should acutely smell in conjunction with immersed microfiltration/ultra-filtration membrane art breading the method that taste pollutes, when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being native smelly element and dimethyl iso-borneol, specifically carries out according to the following steps:
1. to the Powdered Activated Carbon that adds 10mg/L～50mg/L in water inlet pipe or membrane cisterna; 2. intermittently open membrane cisterna aerating system, regulating the ratio of air water is (3～5): 1, make aerating system intermittent aeration; 3. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being (6～15): 1.
It is to precipitate for fear of Powdered Activated Carbon that present embodiment discontinuous is opened the object that membrane cisterna aerating system makes aerating system intermittent aeration.
Embodiment four: present embodiment and embodiment three differences are: 1. to the Powdered Activated Carbon that adds 15mg/L～40mg/L in water inlet pipe or membrane cisterna.Other steps are identical with embodiment three.
Embodiment five: present embodiment is should acutely smell in conjunction with immersed microfiltration/ultra-filtration membrane art breading the method that taste pollutes, when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being the mixture of thio-alcohol material, sulphur ether material or thio-alcohol material/sulphur ether material, specifically carries out according to the following steps:
1. to the chlorine that adds 0.5mg/L～2mg/L potassium permanganate or 1mg/L～3mg/ in water inlet pipe or membrane cisterna; 2. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
Embodiment six: present embodiment and embodiment five differences are: 1. to the chlorine that adds 1mg/L～2mg/L potassium permanganate or 1.5mg/L～2.5mg/ in water inlet pipe or membrane cisterna.Other steps are identical with embodiment five.
Embodiment seven: present embodiment is should acutely smell in conjunction with immersed microfiltration/ultra-filtration membrane art breading the method that taste pollutes, when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being the compound substance of native smelly element, dimethyl iso-borneol and mercaptan sulfur ether material, specifically carries out according to the following steps:
1. to the chlorine that adds 0.5mg/L～2mg/L potassium permanganate or 1mg/L～3mg/ in micro-filtration/ultra-filtration membrane pretreatment unit, make water from micro-filtration/ultra-filtration membrane pretreatment unit to entering the reaction times that has 5min～180min membrane cisterna; 2. to the Powdered Activated Carbon that adds 10mg/L～50mg/L in membrane cisterna; 3. intermittently open membrane cisterna aerating system, regulating the ratio of air water is (3～5): 1, make aerating system intermittent aeration; 4. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being (6～15): 1.
Embodiment eight: present embodiment and embodiment seven differences are: 1. to the chlorine that adds 1mg/L～2mg/L potassium permanganate or 1.5mg/L～3mg/ in micro-filtration/ultra-filtration membrane pretreatment unit, make water from micro-filtration/ultra-filtration membrane pretreatment unit to entering the reaction times that has 10min membrane cisterna.Other steps are identical with embodiment seven.
Adopt following verification experimental verification effect of the present invention:
Test one: should be acute smell in conjunction with immersed microfiltration/ultra-filtration membrane art breading the method that taste pollutes, when water inlet is smelt taste material concentration while being 3 times of threshold values, should acutely smell in conjunction with immersed microfiltration/ultra-filtration membrane art breading the method that taste pollutes and carry out according to the following steps:
1. open ultrafiltration membrane cisterna aerating system, regulating the ratio of air water is 8:1, makes aerating system continuous aeration stripping; 2. after hydraulic retention 20min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
Water inlet dimethyl sulfide concentration is 30.1 μ g/L, in water after overtesting one is processed, dimethyl sulfide concentration is 8.7 μ g/L, and dimethyl sulfide clearance can reach 71.1%, and only uses micro-filtration/ultra-filtration membrane art breading water, dimethyl sulfide concentration is 28.3 μ g/L, and dimethyl sulfide clearance is 6.0%.
Test two: should acutely smell the method that taste pollutes in conjunction with immersed microfiltration/ultra-filtration membrane art breading, when water inlet, smelling taste material concentration is 10 times of threshold values and water inlet when smelling taste material and being sulphur ether material, should acutely smell the method that taste pollutes carry out according to the following steps in conjunction with immersed microfiltration/ultra-filtration membrane art breading:
1. in water inlet pipe, add 1.5mg/L potassium permanganate; 2. after hydraulic retention 20min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
Water inlet dimethyl sulfide concentration is 98.2 μ g/L, in water after overtesting two is processed, dimethyl sulfide concentration is 8.1 μ g/L, and dimethyl sulfide clearance can reach 91.7%, and only uses micro-filtration/ultra-filtration membrane art breading water, water inlet dimethyl sulfide concentration is 93.1 μ g/L, and dimethyl sulfide clearance is 5.2%.
Test three: should acutely smell the method that taste pollutes in conjunction with immersed microfiltration/ultra-filtration membrane art breading, when water inlet, smelling taste material concentration is that 5 times of threshold values and water inlet are smelt taste material for soil smelly when element, should acutely smell the method that taste pollutes carry out according to the following steps in conjunction with immersed microfiltration/ultra-filtration membrane art breading:
1. to the Powdered Activated Carbon that adds 20mg/L in membrane cisterna; 2. intermittently open membrane cisterna aerating system, regulating the ratio of air water is 4:1, makes aerating system intermittent aeration; 3. after hydraulic retention 20min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being 8:1.
The concentration of native smelly element of intaking is 51.3ng/L, in water after overtesting three is processed, the smelly plain concentration of soil is 7.9ng/L, and the smelly plain clearance of soil can reach 84.6%, and only uses micro-filtration/ultra-filtration membrane art breading water, the concentration of the smelly element of soil is 49.5ng/L, and the smelly plain clearance of soil is 3.5%.
Claims (8)
1. in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes, it is characterized in that smelling taste material concentration while being 1 times～3 times of threshold values when water inlet, in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes and carry out according to the following steps:
1. open ultrafiltration membrane cisterna aerating system, regulating the ratio of air water is (1～10): 1, make aerating system continuous aeration stripping; 2. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
2. combination immersed microfiltration/ultra-filtration membrane art breading according to claim 1 should acutely be smelt the method that taste pollutes, described in it is characterized in that 1., open ultrafiltration membrane cisterna aerating system, regulating the ratio of air water is (2～8): 1, make aerating system pipe continuous aeration stripping.
3. in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes, it is characterized in that when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being native smelly element and dimethyl iso-borneol, in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes and carry out according to the following steps:
1. to the Powdered Activated Carbon that adds 10mg/L～50mg/L in water inlet pipe or membrane cisterna; 2. intermittently open membrane cisterna aerating system, regulating the ratio of air water is (3～5): 1, make aerating system intermittent aeration; 3. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being (6～15): 1.
4. combination immersed microfiltration/ultra-filtration membrane art breading according to claim 3 should be acute be smelt the method that taste pollutes, described in it is characterized in that 1. to the Powdered Activated Carbon that adds 15mg/L～40mg/L in water inlet pipe or membrane cisterna.
5. in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes, it is characterized in that when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being the mixture of thio-alcohol material, sulphur ether material or thio-alcohol material/sulphur ether material, in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes and carry out according to the following steps:
1. to the chlorine that adds 0.5mg/L～2mg/L potassium permanganate or 1mg/L～3mg/ in water inlet pipe or membrane cisterna; 2. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard.
6. combination immersed microfiltration/ultra-filtration membrane art breading according to claim 5 should be acute be smelt the method that taste pollutes, described in it is characterized in that 1. to the chlorine that adds 1mg/L～2mg/L potassium permanganate or 1.5mg/L～2.5mg/ in water inlet pipe or membrane cisterna.
7. in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes, it is characterized in that when water inlet, smelling taste material concentration is 3 times～15 times threshold values and water inlet when smelling taste material and being the compound substance of native smelly element, dimethyl iso-borneol and mercaptan sulfur ether material, in conjunction with immersed microfiltration/ultra-filtration membrane art breading, should acutely smell the method that taste pollutes and carry out according to the following steps:
1. to the chlorine that adds 0.5mg/L～2mg/L potassium permanganate or 1mg/L～3mg/ in micro-filtration/ultra-filtration membrane pretreatment unit, make water from micro-filtration/ultra-filtration membrane pretreatment unit to entering the reaction times that has 5min～180min membrane cisterna; 2. to the Powdered Activated Carbon that adds 10mg/L～50mg/L in membrane cisterna; 3. intermittently open membrane cisterna aerating system, regulating the ratio of air water is (3～5): 1, make aerating system intermittent aeration; 4. after hydraulic retention 20min～30min, obtain membrane cisterna water outlet and smell taste material concentration water up to standard; The time of stopping of described aerating system intermittent aeration is than being (6～15): 1.
8. combination immersed microfiltration/ultra-filtration membrane art breading according to claim 7 should acutely be smelt the method that taste pollutes, described in it is characterized in that 1. to the chlorine that adds 1mg/L～2mg/L potassium permanganate or 1.5mg/L～3mg/ in micro-filtration/ultra-filtration membrane pretreatment unit, make water from micro-filtration/ultra-filtration membrane pretreatment unit to entering the reaction times that has 10min membrane cisterna.
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| CN201310495020.6A CN103523975A (en) | 2013-10-21 | 2013-10-21 | Method for treating emergency odor pollution by combining submerged microfiltration/ultrafiltration membrane technology |
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| CN114524550A (en) * | 2022-03-03 | 2022-05-24 | 哈尔滨工业大学 | Gravity-driven drinking water purification device based on near-zero operation and maintenance double-membrane method and method for treating distributed water source water by using same |
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| CN114524550A (en) * | 2022-03-03 | 2022-05-24 | 哈尔滨工业大学 | Gravity-driven drinking water purification device based on near-zero operation and maintenance double-membrane method and method for treating distributed water source water by using same |
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Application publication date: 20140122 |