CN111072107A - Domestic drinking water feed water treatment process - Google Patents
Domestic drinking water feed water treatment process Download PDFInfo
- Publication number
- CN111072107A CN111072107A CN201911186976.1A CN201911186976A CN111072107A CN 111072107 A CN111072107 A CN 111072107A CN 201911186976 A CN201911186976 A CN 201911186976A CN 111072107 A CN111072107 A CN 111072107A
- Authority
- CN
- China
- Prior art keywords
- water
- hollow fiber
- membrane
- ultrafiltration membrane
- fiber ultrafiltration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to the field of water treatment, and particularly relates to a water supply treatment process for domestic drinking water; raw water sequentially passes through the enhanced hollow fiber ultrafiltration membrane and the high-precision hollow fiber ultrafiltration membrane. The membrane pores of the separation functional layer of the enhanced hollow fiber ultrafiltration membrane are 80nm to 100 nm; the mechanical strength of the reinforced hollow fiber ultrafiltration membrane is more than 200N. The membrane surface aperture range of the high-precision hollow fiber ultrafiltration membrane is 20nm-60 nm. The treatment device for domestic drinking water feed water adopts double filtration, and can ensure that the water quality of produced water meets the water quality index requirement in the latest implementation 'sanitary Standard for domestic Drinking Water'.
Description
Technical Field
The invention belongs to the field of water treatment, and particularly relates to a water supply treatment process for domestic drinking water.
Background
In China, the sanitary Standard for Drinking Water (7/1/2012), 106 indexes are comprehensively implemented, and a high-quality drinking water standard is provided, but for a long time, the conventional treatment process technology commonly used by domestic water plants cannot completely ensure that the 106 indexes of drinking water of urban and rural residents reach the standard, and the original water treatment process needs to be improved.
The three-stage process, namely the technological process of coagulation, precipitation and filtration (sand filtration or ultrafiltration), is mainly adopted in the field of drinking water in China. The prior art faces the following problems:
① the original process cannot remove two worms (giardia and cryptosporidium) in drinking water;
② the quality of the produced water can not meet the improvement requirement of our country for the quality of drinking water, for example, the water supply requirement of Shanghai drinking water is improved to below 0.05 NTU;
③ with conventional ultrafiltration membranes, the higher the risk of membrane filament breakage with time.
④ the coagulating sedimentation needs to be added with a large amount of medicament, the medicament mainly uses polyacrylamide, which can form embedded pollution to the membrane filaments of the subsequent process section, and the pollution can not be solved by air-water backwashing or cleaning of chemical medicament, thus reducing the water flux of membrane production, shortening the service life of membrane products, and the addition of a large amount of medicament also promotes the engineering operation cost
⑤ the process flow section is complicated, is not easy to operate and maintain, and needs a large amount of floor space, and promotes the engineering construction cost.
The hollow fiber ultrafiltration membrane has the characteristics of simple use process, no need of heating, energy conservation, low-pressure operation, small occupied area of the device and the like, and is widely used in the fields of sewage treatment, water body purification, reclaimed water recycling, substance separation and purification and the like.
Patent ZL201010590152.3 "preparation method of compound enhancement mode liquid separation membrane of polyvinylidene fluoride" provides a compound enhancement mode liquid separation membrane of polyvinylidene fluoride, and this membrane product had both had good mechanical properties, had higher precision of holding back again, and the cortex is difficult to peel off in the use.
Patent ZL201210081941.3 'a preparation method of a hollow fiber composite membrane' provides a preparation method of a hollow fiber composite membrane, which can avoid the influence of a composite process on the stability of casting solutions of two membrane forming systems and the dimensional stability of the hollow fiber membrane.
Patent ZL200710057539.0 "manufacturing approach and apparatus of hollow membrane of enhancement mode combined material" provides a high strength hollow fiber membrane, and this membrane product has good toughness, intensity, water permeability, plays the supporting layer effect, mainly bears external force, can obviously avoid the fracture phenomenon of membrane material in the use.
By utilizing the film product, the water outlet index of a water plant can comprehensively meet the new standard requirement of sanitary Standard for Drinking Water in China by designing and developing the application process of the product and applying the product to the upgrading and transformation of the water plant.
Disclosure of Invention
The invention aims to provide a process for treating domestic drinking water.
In order to achieve the purpose, the invention adopts the following technical scheme:
raw water sequentially passes through an enhanced hollow fiber ultrafiltration membrane and a high-precision hollow fiber ultrafiltration membrane.
The membrane pores of the separation functional layer of the enhanced hollow fiber ultrafiltration membrane are 80nm to 100 nm; the mechanical strength of the reinforced hollow fiber ultrafiltration membrane is more than 200N.
The membrane surface aperture range of the high-precision hollow fiber ultrafiltration membrane is 20nm-60 nm.
The turbidity of the water is more than 10NTU, and the raw water sequentially passes through a pretreatment device, an enhanced hollow fiber ultrafiltration membrane and a high-precision hollow fiber ultrafiltration membrane; the pretreatment device comprises a sedimentation tank and a self-cleaning filter.
Compared with the prior art, the invention has the beneficial effects that:
the treatment device for domestic drinking water feed water adopts double filtration, and can ensure that the water quality of produced water meets the water quality index requirement in the latest implementation 'sanitary Standard for domestic Drinking Water'.
When the turbidity of water entering the treatment device is less than 10NTU, no pretreatment is needed, and the turbidity of water greater than 10NTU only needs to be added with simple pretreatment, so that the construction cost and the operation and maintenance cost are saved; the method has the advantages of simple process flow, convenient operation and maintenance, high system recovery rate, 100% recovery rate of the first ultrafiltration system, more than 90% recovery rate of the second ultrafiltration system and more than 90% recovery rate of the whole system.
The specific implementation mode is as follows:
in order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following preferred embodiments.
Example 1: the turbidity of the incoming water of a certain reservoir is stabilized at about 30NTU throughout the year, because the turbidity is large, a front coagulation sedimentation tank and a conventional self-cleaning filter are required to be arranged during water purification, 9.6mg/L of lime, 978mg/L of soda ash and 10mg/L of PAC (polyaluminium chloride) of a coagulant are added into a front coagulation water distribution unit of the front coagulation sedimentation tank, a medicament is rapidly mixed with the incoming water and then enters a reaction tank of the front coagulation sedimentation tank, 1mg/L of PAM (polyacrylamide) serving as a flocculant is added into the reaction tank, a large alum floc appears in the water, most of suspended solids are precipitated in the front coagulation sedimentation tank and then enter the conventional self-cleaning filter for further filtration, and the turbidity of the outgoing water is reduced to 10 NTU;
pumping pretreated effluent to a first device, wherein a functional membrane is a nylon braided tube reinforced hollow fiber PVDF ultrafiltration membrane (the pore diameter of a surface membrane is 80nm, the mechanical strength is 200N), the operating pressure is 0.02MPa, and the turbidity of the effluent is reduced to about 2NTU after the effluent is treated by the first device;
and (2) pumping the effluent treated by the first device into a second device, wherein the functional membrane is a high-precision hollow fiber PVDF ultrafiltration membrane (the membrane surface pore diameter is 20nm), the operating pressure is 0.02MPa, the turbidity of the produced water is reduced to about 0.1NTU, and the quality of the produced water meets the water quality index requirement in sanitary Standard for Drinking Water, can flow into a municipal pipe network and is supplied for the life of people.
Example 2: the turbidity of the incoming water of a certain reservoir is stabilized at about 10NTU throughout the year, and the incoming water can be directly pumped into the first device because the turbidity meets the water inlet requirement (the turbidity is not higher than 10NTU) of a middle membrane of the first device, wherein the functional membrane is a nylon woven tube reinforced hollow fiber PVDF ultrafiltration membrane (the pore diameter of a surface membrane is 100nm, the mechanical strength is 300N), the operating pressure is 0.02MPa, and the turbidity of the outgoing water is reduced to about 3.5NTU after the treatment of the first device;
and (2) pumping the effluent treated by the first device into a second device, wherein the functional membrane is a high-precision hollow fiber PVDF ultrafiltration membrane (the membrane surface pore diameter is 40nm), the operating pressure is 0.02MPa, the turbidity of the produced water is reduced to about 0.1NTU, and the quality of the produced water meets the water quality index requirement in sanitary Standard for Drinking Water, can flow into a municipal pipe network and is supplied for the life of people.
Example 3: the turbidity of the incoming water of a certain reservoir is stabilized at about 5NTU throughout the year, and the incoming water can be directly pumped into a first device because the turbidity meets the water inlet requirement (the turbidity is not higher than 10NTU) of a first device middle membrane, wherein a functional membrane is a nylon braided tube reinforced hollow fiber PVDF ultrafiltration membrane (the pore diameter of a surface membrane is 90nm, the mechanical strength is 500N), the operating pressure is 0.02MPa, and the turbidity of the outgoing water is reduced to about 1.7NTU after the treatment of the first device;
and (2) pumping the effluent treated by the first device into a second device, wherein the functional membrane is a high-precision hollow fiber PVDF ultrafiltration membrane (the membrane surface pore diameter is 60nm), the operating pressure is 0.02MPa, the turbidity of the produced water is reduced to about 0.1NTU, and the quality of the produced water meets the water quality index requirement in sanitary Standard for Drinking Water, can flow into a municipal pipe network and is supplied for the life of people.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation. The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (4)
1. A treatment process for domestic drinking water supply is characterized in that raw water sequentially passes through an enhanced hollow fiber ultrafiltration membrane and a high-precision hollow fiber ultrafiltration membrane.
2. The process for treating domestic drinking water as claimed in claim 1, wherein the membrane pores of the separation functional layer of said enhanced hollow fiber ultrafiltration membrane are 80nm to 100 nm; the mechanical strength of the reinforced hollow fiber ultrafiltration membrane is more than 200N.
3. The process for treating domestic drinking water as claimed in claim 1, wherein the pore size of the membrane surface of said high-precision hollow fiber ultrafiltration membrane is in the range of 20nm to 60 nm.
4. The process for treating domestic drinking water as claimed in claim 1, wherein when the turbidity of water is greater than 10NTU, the raw water passes through the pretreatment device, the enhanced hollow fiber ultrafiltration membrane and the high-precision hollow fiber ultrafiltration membrane in sequence; the pretreatment device comprises a sedimentation tank and a self-cleaning filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186976.1A CN111072107A (en) | 2019-11-27 | 2019-11-27 | Domestic drinking water feed water treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186976.1A CN111072107A (en) | 2019-11-27 | 2019-11-27 | Domestic drinking water feed water treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111072107A true CN111072107A (en) | 2020-04-28 |
Family
ID=70311932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911186976.1A Pending CN111072107A (en) | 2019-11-27 | 2019-11-27 | Domestic drinking water feed water treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111072107A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2659868Y (en) * | 2003-11-19 | 2004-12-01 | 蔡文军 | Household hollow superfiltering film water purifier |
| CN101531431A (en) * | 2009-04-21 | 2009-09-16 | 李�杰 | Composite and separable physical disinfection method and device of barreled drinking water |
| CN201395538Y (en) * | 2009-03-31 | 2010-02-03 | 上海穆特环保科技有限公司 | Emergency drinking water treatment equipment |
| CN101698544A (en) * | 2009-10-22 | 2010-04-28 | 李�杰 | Method and equipment for preparing citizen safe drinking water and safe domestic water fully physically |
| CN203187485U (en) * | 2013-03-28 | 2013-09-11 | 深圳市汇清科技有限公司 | Control system of multipurpose household water purifier |
| CN203295295U (en) * | 2013-04-22 | 2013-11-20 | 国电龙源南京膜技术有限公司 | Ultra-filtration-based direct drinking water preparation device |
| CN104649438A (en) * | 2013-11-25 | 2015-05-27 | 西安民生电热技术工程有限责任公司 | Two-stage ultrafiltration water treatment structure |
| CN204529402U (en) * | 2015-04-01 | 2015-08-05 | 厦门恒净源水处理设备有限公司 | A kind of ultrafiltration water purifier |
| CN204981266U (en) * | 2015-07-08 | 2016-01-20 | 海天水务集团股份公司 | Ultrafiltration device with adjust running water pressure function |
| CN205099421U (en) * | 2015-11-06 | 2016-03-23 | 山东农业大学 | Low -cost garlic piece waste water processing system |
| US20160176740A1 (en) * | 2013-08-23 | 2016-06-23 | Hitachi Zosen Corporation | Seawater desalination system and seawater desalination method |
| CN206051629U (en) * | 2016-08-30 | 2017-03-29 | 上海东诚环保科技有限公司 | A kind of unified water treating apparatus |
| CN109562964A (en) * | 2016-08-24 | 2019-04-02 | 奥加诺株式会社 | Ultrapure water production device |
| CN208933106U (en) * | 2018-08-22 | 2019-06-04 | 广州京平科技发展有限公司 | A kind of film process drinking water system |
| CN110183016A (en) * | 2019-06-27 | 2019-08-30 | 上海万沣环保科技有限公司 | A kind of full house water purification system of residential quarters centralization |
| WO2019188963A1 (en) * | 2018-03-27 | 2019-10-03 | 野村マイクロ・サイエンス株式会社 | Ultrapure-water production system and operation method for ultrapure-water production system |
-
2019
- 2019-11-27 CN CN201911186976.1A patent/CN111072107A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2659868Y (en) * | 2003-11-19 | 2004-12-01 | 蔡文军 | Household hollow superfiltering film water purifier |
| CN201395538Y (en) * | 2009-03-31 | 2010-02-03 | 上海穆特环保科技有限公司 | Emergency drinking water treatment equipment |
| CN101531431A (en) * | 2009-04-21 | 2009-09-16 | 李�杰 | Composite and separable physical disinfection method and device of barreled drinking water |
| CN101698544A (en) * | 2009-10-22 | 2010-04-28 | 李�杰 | Method and equipment for preparing citizen safe drinking water and safe domestic water fully physically |
| CN203187485U (en) * | 2013-03-28 | 2013-09-11 | 深圳市汇清科技有限公司 | Control system of multipurpose household water purifier |
| CN203295295U (en) * | 2013-04-22 | 2013-11-20 | 国电龙源南京膜技术有限公司 | Ultra-filtration-based direct drinking water preparation device |
| US20160176740A1 (en) * | 2013-08-23 | 2016-06-23 | Hitachi Zosen Corporation | Seawater desalination system and seawater desalination method |
| CN104649438A (en) * | 2013-11-25 | 2015-05-27 | 西安民生电热技术工程有限责任公司 | Two-stage ultrafiltration water treatment structure |
| CN204529402U (en) * | 2015-04-01 | 2015-08-05 | 厦门恒净源水处理设备有限公司 | A kind of ultrafiltration water purifier |
| CN204981266U (en) * | 2015-07-08 | 2016-01-20 | 海天水务集团股份公司 | Ultrafiltration device with adjust running water pressure function |
| CN205099421U (en) * | 2015-11-06 | 2016-03-23 | 山东农业大学 | Low -cost garlic piece waste water processing system |
| CN109562964A (en) * | 2016-08-24 | 2019-04-02 | 奥加诺株式会社 | Ultrapure water production device |
| CN206051629U (en) * | 2016-08-30 | 2017-03-29 | 上海东诚环保科技有限公司 | A kind of unified water treating apparatus |
| WO2019188963A1 (en) * | 2018-03-27 | 2019-10-03 | 野村マイクロ・サイエンス株式会社 | Ultrapure-water production system and operation method for ultrapure-water production system |
| CN208933106U (en) * | 2018-08-22 | 2019-06-04 | 广州京平科技发展有限公司 | A kind of film process drinking water system |
| CN110183016A (en) * | 2019-06-27 | 2019-08-30 | 上海万沣环保科技有限公司 | A kind of full house water purification system of residential quarters centralization |
Non-Patent Citations (2)
| Title |
|---|
| 崔淑霞: "超滤技术在饮用水深度处理上的应用", 《中国农村水利水电》 * |
| 张宇昊等: "花生降血压肽的超滤分离研究", 《中国油脂》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102285736B (en) | Reverse osmosis pre-treatment method for recycling reclaimed water in electric power plant | |
| CN103011524B (en) | Recycling and processing method for printing and dyeing wastewater | |
| CN105541036A (en) | Treating system and method for reusing wastewater in printing and dyeing industry | |
| CN105060636B (en) | A kind of dual treatment dyeing waste water intermediate water reuse system and technique | |
| CN208234724U (en) | Advanced treatment and reuse of dyeing waste water and Zero emission device | |
| CN103351088B (en) | Treatment and regenerative cyclic utilization device for tobacco sheet production wastewater | |
| CN104556437A (en) | Membrane technology-based municipal sewage deep treatment and recovery method | |
| CN201280490Y (en) | Reclaimed water recycling apparatus by full membrane process | |
| CN101585649B (en) | Processing system and processing method for purifying sewerage sludge filtrate | |
| CN102674585A (en) | Combined enhanced treatment process for low-turbidity high-alga raw water | |
| CN104402138B (en) | A kind of pulping wastewater treatment method | |
| CN103342431A (en) | Process for reusing tail water in papermaking and pulping | |
| WO2023040018A1 (en) | Novel low-pressure high-recovery rate nanofiltration system and method | |
| CN204588956U (en) | A kind of low turbidity micro-polluted surface water advanced treatment apparatus | |
| CN103030199A (en) | Method for filtering water | |
| CN202881038U (en) | Electroplating waste water separation and recycling treatment apparatus | |
| CN208234693U (en) | Haline water zero discharge treatment device | |
| CN111072107A (en) | Domestic drinking water feed water treatment process | |
| CN215947010U (en) | Novel low-pressure high-recovery-rate nanofiltration system | |
| CN110002676A (en) | A kind of sewage plant utilized based on sub-prime and steam power plant's water circulation use technique | |
| CN101830599B (en) | Processing method of paper making wastewater | |
| CN112979038B (en) | Zero-discharge treatment process for printing and dyeing wastewater | |
| CN210505913U (en) | Make-up water treatment system suitable for natural gas distributed energy resource station | |
| CN104817205A (en) | Continuous sand filtration-ozone catalytic oxidation combined wastewater treatment equipment and application method thereof | |
| Son et al. | Application of tube-type ceramic microfiltration membrane for post-treatment of effluent from biological wastewater treatment process using phase separation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200428 |
|
| RJ01 | Rejection of invention patent application after publication |