CN111392831A - Method for purifying and disinfecting domestic water - Google Patents
Method for purifying and disinfecting domestic water Download PDFInfo
- Publication number
- CN111392831A CN111392831A CN202010296166.8A CN202010296166A CN111392831A CN 111392831 A CN111392831 A CN 111392831A CN 202010296166 A CN202010296166 A CN 202010296166A CN 111392831 A CN111392831 A CN 111392831A
- Authority
- CN
- China
- Prior art keywords
- water
- chlorine dioxide
- reverse osmosis
- osmosis membrane
- purifying
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a method for purifying and disinfecting domestic water, which comprises the following steps of mixing chlorite and two acidic substances in proportion to form a main water purifying material, heating and adhering a reverse osmosis membrane on the surface of a bag made of non-woven fabrics to form a reverse osmosis membrane bag, preparing according to the size of a water body, filling the main water purifying material into the reverse osmosis membrane bag to form a chlorine dioxide slow-release bag, putting the chlorine dioxide slow-release bag into a pre-prepared balance container with the concentration of chlorine dioxide of 1 g/L, extracting 1000ml of liquid from the balance container into 1 ton of domestic water, and keeping the concentration of the chlorine dioxide in the water body to reach 1 mg/L.
Description
Technical Field
The invention belongs to the field of purification and disinfection, and relates to a method for purifying and disinfecting domestic water, in particular to a method for purifying and disinfecting domestic water in cities and towns and rural areas.
Background
At present, although a drinking water safety guarantee technical system is initially constructed in China, the drinking water safety guarantee technical system still needs to be further perfected. The statistical results of the national statistical bureau show that along with the increasing severity of environmental pollution, the treatment of domestic water in villages and towns is concerned more and more. At present, most farmers in rural areas in China are in a scattered living state and are in good management on domestic water, so that a small domestic water purification device suitable for single household or united household is gradually developed into a main technology for domestic water dispersion treatment in China.
The long-term urban and rural binary system causes drinking water safety engineering construction in China to form a pattern of heavy cities, towns and light rural areas, so that drinking water safety in rural areas in China faces more challenges. At present, rural water supply investment in many areas of China is insufficient, infrastructure is lagged, and increasing demands are difficult to deal with. The statistics result of the national statistics bureau in 2018 shows that the proportion of natural villages of drinking water in rural areas of China is only 46.7 percent after centralized purification treatment; 40.8% of farmers in poor areas have no pipeline facilities, only 33.1% use purified tap water, 40.7% use well water and spring water protected step by step, and 17% use unprotected well water or spring water.
At present, more than 500 large water treatment plants in the United states use chlorine dioxide for disinfection, and domestic large water plants are also started to be applied, such as Minnow water works of the Shanghai tap water company. The results of using chlorine dioxide for disinfection show that the sterilizing effect of chlorine dioxide is superior to that of chlorine, and the advantages are many, mainly: high sterilizing efficiency, no odor and odor, improved flocculation, etc.
Because chlorine dioxide is a volatile gas, how to ensure that chlorine dioxide can maintain trace amount in water and has lasting effect to prevent water from being polluted again is a difficult technical barrier to solve.
Disclosure of Invention
In order to overcome the defect that small domestic water purification devices in villages and towns cannot maintain the constant concentration of chlorine dioxide in water, the invention aims to provide the domestic water purification and disinfection method, which can effectively and slowly release the chlorine dioxide in the domestic water, can balance and stabilize the concentration and activity of the domestic water disinfectant, can maintain the reliable time of 1-3 months, and is convenient for popularization and application in towns and remote mountainous areas.
The invention relates to a method for purifying and disinfecting domestic water, which comprises the following steps:
A. mixing chlorite and two acidic substances according to the proportion of (0.5-1.5) to (4-6) to (2-4) to be used as main water purifying materials for later use;
B. heating and adhering the reverse osmosis membrane on the surface of a bag made of non-woven fabric to prepare a reverse osmosis membrane bag;
C. preparing according to the size of a water body, and filling the water purification main material into the reverse osmosis membrane bag to prepare a chlorine dioxide slow release bag;
D. putting the chlorine dioxide slow-release package into a pre-prepared balance container with chlorine dioxide concentration of 1 g/L, and maintaining the chlorine dioxide concentration of the liquid in the container at the level of 1 g/L;
E. and extracting 1000ml of liquid from the balance container to 1 ton of domestic water, and extracting 1000ml of liquid from the balance container to supplement the liquid to the water body every 1 ton of water, wherein the concentration of the chlorine dioxide in the water body is maintained to be 1 mg/L.
Preferably, the chlorite is selected from: sodium chlorite, potassium chlorite, magnesium chlorite.
Preferably, the acidic substance is selected from: citric acid, citrate, boric acid, borate, oxalic acid, phosphoric acid, phosphate, dodecylbenzenesulfonic acid, sodium bisulfate, and sodium bicarbonate.
Preferably, the reverse osmosis membrane is selected from: one of a cellulose acetate reverse osmosis membrane and a polyamide reverse osmosis membrane or a composite membrane thereof.
The method for purifying and disinfecting the domestic water utilizes the chlorine dioxide slow-release bag to slowly release the chlorine dioxide in the domestic water, not only makes up the defects of high investment requirement, high site requirement and high maintenance cost of large-scale water plants, but also can be conveniently popularized in villages and towns and remote areas to effectively solve the problem of domestic water.
Detailed Description
The present invention will be described in further detail with reference to the following examples. The specific embodiments are provided to facilitate a better understanding of the present invention and are not intended to limit the present invention in any way.
The first embodiment is as follows: the invention relates to a method for purifying and disinfecting domestic water
A composite cellulose acetate reverse osmosis membrane is used as a carrier, a mixture of sodium chlorite, citric acid and boric acid is filled in the carrier according to a ratio of 1: 5: 3, and a water purifying main material is prepared according to the size of a drinking water tank so that chlorine dioxide generated by a water body is maintained at 1 g/L.
The method specifically comprises the following steps:
1. mixing sodium chlorite, citric acid and boric acid according to the proportion of 1: 5: 3 is mixed as a main water purifying material for standby;
2. heating and adhering a cellulose acetate reverse osmosis membrane on the surface of a bag made of non-woven fabric to prepare a reverse osmosis membrane bag;
3. preparing according to the size of a water body, and filling the water purification main material into the reverse osmosis membrane bag to prepare a chlorine dioxide slow release bag;
4. putting the chlorine dioxide slow-release package into a pre-prepared equilibrium container with chlorine dioxide concentration of 1 g/L, and maintaining the chlorine dioxide concentration of the liquid in the container at the level of 1 g/L;
5. and extracting 1000ml of liquid from the balance container to 1 ton of domestic water, and extracting 1000ml of liquid from the balance container to supplement the liquid to the water body every 1 ton of water, wherein the concentration of the chlorine dioxide in the water body is maintained to be 1 mg/L.
The time and the usage amount of domestic water used by villagers are uncertain, and the purpose of supplementing 1000ml of the balance container into the drinking water pool is to always maintain the concentration of 1 mg/L of the chlorine dioxide in the drinking water pool to reach the national standard every time the villagers use a 1-ton water sensor and extract the balance container to supplement the drinking water pool.
Example two: the invention relates to a method for purifying and disinfecting domestic water
A composite cellulose acetate reverse osmosis membrane is used as a carrier, a mixture of sodium chlorite, citric acid and boric acid is filled in the carrier according to the proportion of 0.5: 4: 2, and a water purifying main material is prepared according to the size of a drinking water tank so that chlorine dioxide generated by a water body is maintained at 1 g/L.
The method specifically comprises the following steps:
1. mixing sodium chlorite, citric acid and boric acid according to the weight ratio of 0.5: 4: 2 as main water purifying materials for standby;
2. heating and adhering a cellulose acetate reverse osmosis membrane on the surface of a bag made of non-woven fabric to prepare a reverse osmosis membrane bag;
3. preparing according to the size of a water body, and filling the water purification main material into the reverse osmosis membrane bag to prepare a chlorine dioxide slow release bag;
4. putting the chlorine dioxide slow-release package into a pre-prepared equilibrium container with chlorine dioxide concentration of 1 g/L, and maintaining the chlorine dioxide concentration of the liquid in the container at the level of 1 g/L;
5. and extracting 1000ml of liquid from the balance container to 1 ton of domestic water, and extracting 1000ml of liquid from the balance container to supplement the liquid to the water body every 1 ton of water, wherein the concentration of the chlorine dioxide in the water body is maintained to be 1 mg/L.
The time and the usage amount of domestic water used by villagers are uncertain, and the purpose of supplementing 1000ml of the balance container into the drinking water pool is to always maintain the concentration of 1 mg/L of the chlorine dioxide in the drinking water pool to reach the national standard every time the villagers use a 1-ton water sensor and extract the balance container to supplement the drinking water pool.
Example three: the invention relates to a method for purifying and disinfecting domestic water
A composite cellulose acetate reverse osmosis membrane is used as a carrier, a mixture of sodium chlorite, citric acid and boric acid is filled in the carrier according to the proportion of 1.5: 6: 4, and a water purifying main material is prepared according to the size of a drinking water tank so that chlorine dioxide generated by a water body is maintained at 1 g/L.
The method specifically comprises the following steps:
1. mixing sodium chlorite, citric acid and boric acid according to the proportion of 1.5: 6: 4 as main water purifying materials for standby;
2. heating and adhering a cellulose acetate reverse osmosis membrane on the surface of a bag made of non-woven fabric to prepare a reverse osmosis membrane bag;
3. preparing according to the size of a water body, and filling the water purification main material into the reverse osmosis membrane bag to prepare a chlorine dioxide slow release bag;
4. putting the chlorine dioxide slow-release package into a pre-prepared equilibrium container with chlorine dioxide concentration of 1 g/L, and maintaining the chlorine dioxide concentration of the liquid in the container at the level of 1 g/L;
5. and extracting 1000ml of liquid from the balance container to 1 ton of domestic water, and extracting 1000ml of liquid from the balance container to supplement the liquid to the water body every 1 ton of water, wherein the concentration of the chlorine dioxide in the water body is maintained to be 1 mg/L.
The time and the usage amount of domestic water used by villagers are uncertain, and the purpose of supplementing 1000ml of the balance container into the drinking water pool is to always maintain the concentration of 1 mg/L of the chlorine dioxide in the drinking water pool to reach the national standard every time the villagers use a 1-ton water sensor and extract the balance container to supplement the drinking water pool.
The sodium chlorite used in the above examples one to three may be replaced with potassium chlorite or magnesium chlorite.
Citric acid, boric acid, may be replaced by other useful acidic materials such as citrate, borate, oxalic acid, phosphoric acid, phosphate, dodecylbenzene sulfonic acid, sodium bisulfate, sodium bicarbonate.
The cellulose acetate reverse osmosis membrane used in the above-described examples one to three may be replaced with other usable reverse osmosis membranes, such as a polyamide reverse osmosis membrane, or a composite membrane of cellulose acetate and polyamide.
Example four: effect experiment of the method for purifying and disinfecting domestic water
Experimental materials: taking deep well water in rural areas and introducing the deep well water into a drinking water tank.
Experimental groups: deep well water treated by the method of examples one to three.
Control group: naturally pumping deep well water.
The method comprises the following steps: according to the GB5750-85 drinking water standard inspection method, water samples are respectively taken before and after treatment, the chromaticity of the water is detected by a platinum-cobalt standard colorimetric method, the contents of iron and manganese are determined by a phenanthroline spectrophotometry method, the content of chloride is determined by an ammonium persulfate spectrophotometry method, and the total number of bacteria and escherichia coli groups are respectively detected by a nutrient agar plate method and a multi-tube fermentation method.
A contrast detection experiment shows that when deep well water of a control group which is not treated by the purification and disinfection method provided by the invention is placed at room temperature for 30min, the chroma, the content of iron and manganese, the total number of bacteria and coliform groups all exceed the drinking water standard of China (the chroma is not more than 15 ℃, the content of iron is 0.3 mg/L, the content of manganese is 0.1 mg/L, the content of chloride is 250 mg/L, the total number of bacteria is 100 cfu/L, and the coliform groups are 3/L), the deep well water treated by the purification and disinfection method provided by the invention is treated at room temperature for 10 min, and the indexes of the chroma, the content of iron and manganese, the total number of bacteria, the coliform groups and the like of the water all accord with the drinking water standard of China, and can meet the purification requirement of small domestic water in villages.
The treatment method of example one lasts for one month, the treatment method of example two lasts for two months, and the treatment method of example three lasts for three months, and it is determined that the drinking water pool can balance and stabilize the concentration and activity of the disinfectant for domestic water, and can last for 1-3 months or longer.
Claims (4)
1. A method for purifying and disinfecting domestic water is characterized by comprising the following steps:
A. mixing chlorite and two acidic substances according to the proportion of (0.5-1.5) to (4-6) to (2-4) to be used as main water purifying materials for later use;
B. heating and adhering the reverse osmosis membrane on the surface of a bag made of non-woven fabric to prepare a reverse osmosis membrane bag;
C. preparing according to the size of a water body, and filling the water purification main material into the reverse osmosis membrane bag to prepare a chlorine dioxide slow release bag;
D. putting the chlorine dioxide slow-release package into a pre-prepared equilibrium container with chlorine dioxide concentration of 1 g/L, and maintaining the chlorine dioxide concentration of the liquid in the container at the level of 1 g/L;
E. and extracting 1000ml of liquid from the balance container to 1 ton of domestic water, and extracting 1000ml of liquid from the balance container to supplement the liquid to the water body every 1 ton of water, wherein the concentration of the chlorine dioxide in the water body is maintained to be 1 mg/L.
2. The variable color antiseptic gel of claim 1 wherein the chlorite salt is selected from the group consisting of: sodium chlorite, potassium chlorite, magnesium chlorite.
3. The method for purifying and disinfecting domestic water is characterized in that the acidic substance is selected from the following: citric acid, citrate, boric acid, borate, oxalic acid, phosphoric acid, phosphate, dodecylbenzenesulfonic acid, sodium bisulfate, and sodium bicarbonate.
4. The method for purifying and disinfecting domestic water is characterized in that the reverse osmosis membrane is selected from the following components: one of a cellulose acetate reverse osmosis membrane and a polyamide reverse osmosis membrane or a composite membrane thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010296166.8A CN111392831A (en) | 2020-04-15 | 2020-04-15 | Method for purifying and disinfecting domestic water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010296166.8A CN111392831A (en) | 2020-04-15 | 2020-04-15 | Method for purifying and disinfecting domestic water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111392831A true CN111392831A (en) | 2020-07-10 |
Family
ID=71427922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010296166.8A Pending CN111392831A (en) | 2020-04-15 | 2020-04-15 | Method for purifying and disinfecting domestic water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111392831A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104610A (en) * | 1993-12-30 | 1995-07-05 | 中国人民解放军59174部队 | Chlorine dioxide producing bag and its production |
| US6238643B1 (en) * | 1997-11-07 | 2001-05-29 | Engelhard Corporation | Method and device for the production of an aqueous solution containing chlorine dioxide |
| CN1968602A (en) * | 2004-05-17 | 2007-05-23 | 约翰·Y·马松 | Method of treating with chlorine dioxide |
| JP2007145362A (en) * | 2005-11-28 | 2007-06-14 | Toyobo Co Ltd | Bag of which oxygen permeability is controlled |
| WO2017024251A1 (en) * | 2015-08-06 | 2017-02-09 | International Capital Investment Llc | Disinfectant for drinkable water, food contact, industry, spas, swimming pools and air sterilization |
-
2020
- 2020-04-15 CN CN202010296166.8A patent/CN111392831A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104610A (en) * | 1993-12-30 | 1995-07-05 | 中国人民解放军59174部队 | Chlorine dioxide producing bag and its production |
| US6238643B1 (en) * | 1997-11-07 | 2001-05-29 | Engelhard Corporation | Method and device for the production of an aqueous solution containing chlorine dioxide |
| CN1968602A (en) * | 2004-05-17 | 2007-05-23 | 约翰·Y·马松 | Method of treating with chlorine dioxide |
| JP2007145362A (en) * | 2005-11-28 | 2007-06-14 | Toyobo Co Ltd | Bag of which oxygen permeability is controlled |
| WO2017024251A1 (en) * | 2015-08-06 | 2017-02-09 | International Capital Investment Llc | Disinfectant for drinkable water, food contact, industry, spas, swimming pools and air sterilization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102652563B (en) | Deep-seawater containing health-care drinking liquid and preparation method thereof | |
| CN106508160A (en) | Soil improvement method | |
| Yang et al. | Effects of iron plaque on phosphorus uptake by Pilea cadierei cultured in constructed wetland | |
| Lakho et al. | Total value wall: Full scale demonstration of a green wall for grey water treatment and recycling | |
| CN103043803A (en) | Water purifying agent and preparation method thereof | |
| CN103539244A (en) | Water filtering and purifying treatment agent | |
| CN204958614U (en) | Directly drink water purification installation | |
| CN111392831A (en) | Method for purifying and disinfecting domestic water | |
| CN206735970U (en) | Appliance for treating drinking water | |
| CN105217803A (en) | A kind of sewage disposal is with genus bacillus promotor and preparation method thereof | |
| CN104045166A (en) | Compound microorganism bacterium agent and application thereof in eutrophic water body treatment | |
| CN109266573B (en) | Fermentation agent and microbial inoculum for treating landfill leachate and reverse osmosis concentrated solution and treatment method | |
| CN116000048A (en) | Phosphogypsum innocent treatment method | |
| KR100960401B1 (en) | Method for manufacturing water treatment agent used to improve the environment, and water treatment agent made thereby | |
| CN101654656B (en) | Separation and purification method and application of aerobic degradation pure culture of polycyclic aromatic hydrocarbon | |
| CN106219730A (en) | A kind of method of Semen Litchi resource application | |
| CN104445557B (en) | Application of ferrate compound agent in treatment of low-temperature low-turbidity water | |
| CN101418273B (en) | Denitrifying pseudomonas SH12 of industrial effluent biological denitrification and use | |
| KR100955452B1 (en) | Method for manufacturing microbic culture fluid used to remove moss and green algae, and microbic culture fluid made thereby | |
| Sidibe | Comparative study of bark, bio-char, activated charcoal filters for upgrading grey-water | |
| CN102942245A (en) | Purifying agent for water treatment | |
| Lazarek | Structure and productivity of epiphytic algal communities on Lobelia dortmanna L. in acidified and limed lakes | |
| Huang et al. | Influence of powdered activated carbon on gravity-driven ultrafiltration for decentralized drinking water treatment: Insights from microbial community and biofilm structure | |
| CN106237362B (en) | A kind of preparation method of the liquid microbe deodorant of high concentration | |
| Jiang et al. | Phosphorus in drinking water and it's removal in conventional treatment process |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200710 |
|
| WD01 | Invention patent application deemed withdrawn after publication |