CN114230066A - Rural drinking water disinfection method - Google Patents

Rural drinking water disinfection method Download PDF

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Publication number
CN114230066A
CN114230066A CN202111632555.4A CN202111632555A CN114230066A CN 114230066 A CN114230066 A CN 114230066A CN 202111632555 A CN202111632555 A CN 202111632555A CN 114230066 A CN114230066 A CN 114230066A
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CN
China
Prior art keywords
disinfection
chamber
chemical
drinking water
water
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Pending
Application number
CN202111632555.4A
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Chinese (zh)
Inventor
赵正灵
王海军
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Ningxia Shangzelong Water Conservancy And Hydropower Engineering Co ltd
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Ningxia Shangzelong Water Conservancy And Hydropower Engineering Co ltd
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Priority to CN202111632555.4A priority Critical patent/CN114230066A/en
Publication of CN114230066A publication Critical patent/CN114230066A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325Irradiation devices or lamp constructions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/76Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02Non-contaminated water, e.g. for industrial water supply
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection

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  • 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)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses a rural drinking water disinfection method, which comprises a water delivery pipe, wherein the drinking water disinfection method comprises physical disinfection and chemical disinfection; the filtering layer is connected with the water conveying pipe; the filter layer is connected with a sterilizing chamber, the top of the sterilizing chamber is provided with a plurality of ultraviolet disinfectors, and the ultraviolet disinfectors release 240-280 nm wave bands; the sterilizing chamber is connected with a first chemical sterilizing chamber, and chlorine-containing preparations are put into the first chemical sterilizing chamber; the first chemical disinfection chamber is connected with a second chemical disinfection chamber, and chlorine dioxide is placed in the second chemical disinfection chamber; the second chemical disinfection chamber is connected with a third chemical disinfection chamber, and ozone passes through the third chemical disinfection chamber; the physical disinfection of water can be realized by heating, filtering, ultraviolet rays, radiation disinfection and other methods; the boiling is most common, simple and convenient, and the effect is reliable; complete disinfection conveniently and quickly, achieve better disinfection effect and create social benefits.

Description

Rural drinking water disinfection method
Technical Field
The invention relates to a disinfection method, in particular to a disinfection method for drinking water in rural areas.
Background
(1) The hidden danger of water quality, rural water supply equipment in China is not more than a city, water supply facilities are simple and crude, and the hidden danger of water quality is influenced by production activities of people in recent years, so that industrial polluted water sources are more, most rural areas lack of water purification and disinfection facilities, harmful mineral components in drinking water are serious in standard exceeding, the problem of water quality shortage is serious, the safety of drinking water of common people cannot be guaranteed, and even the health of people is possibly influenced. (2) The water resource is in short supply, the natural weather of China is unstable, many rural areas are arid throughout the year, the water supply guarantee rate is low, and the drinking water difficulty can reappear when continuous drought occurs. (3) Water pollution is serious, a lot of waste water pollutes underground water, water filtering equipment in rural areas is not sophisticated, even a lot of people directly take water from rivers, warehouses and pools for drinking, and water sources which do not meet the national sanitary standard of drinking water threaten the health of people.
Disclosure of Invention
The invention provides a rural drinking water disinfection method for solving the problems, which comprises a water delivery pipe, wherein the drinking water disinfection method comprises physical disinfection and chemical disinfection;
the physical disinfection comprises:
the water conveying pipe is connected with a filter layer, the filter layer is detachably connected with the water conveying pipe and comprises a filter cavity, a filter element is inserted into the filter cavity, and the filter element is a sand filter, an asbestos filter plate or a fiber ester filter membrane;
the filter layer is connected with a sterilizing chamber, a plurality of ultraviolet disinfectors are arranged at the top of the sterilizing chamber, and the ultraviolet disinfectors release wave bands of 240 nanometers to 280 nanometers; the bottom of the sterilizing chamber is provided with a sundry pushing device, the sundry pushing device comprises a telescopic sundry pushing rod, and the sundry pushing rod is connected with a material pushing plate;
the chemical decontamination comprises:
the sterilizing chamber is connected with a first chemical sterilizing chamber, a chlorine-containing preparation is put into the first chemical sterilizing chamber, the chlorine-containing preparation comprises bleaching powder, calcium hypochlorite, chloramine or sodium dichloroisocyanurate, and the chlorine-containing preparation is added so that the addition amount of chlorine is 0.5 mg/L to 2.5 mg/L;
the first chemical disinfection chamber is connected with a second chemical disinfection chamber, and chlorine dioxide is placed in the second chemical disinfection chamber;
the second chemical disinfection chamber is connected with a third chemical disinfection chamber, ozone passes through the third chemical disinfection chamber, the ozone amount is 0.5-6 mg/L, and the ozone introducing time is 4-6 minutes;
and stirring devices are arranged in the first chemical disinfection chamber, the second chemical disinfection chamber and the third chemical disinfection chamber.
Further, the ultraviolet sterilizer is a straight-flow type or a sleeve type.
Further, the chlorine-containing preparation is added so that the amount of chlorine added is 1 mg/l to 2 mg/l.
Further, the third chemical decontamination chamber includes an ozone generator.
Further, the amount of ozone is 1 mg/l to 4 mg/l.
Furthermore, the sterilizing chamber is made of transparent materials.
Compared with the prior art, the invention has the beneficial effects that:
1. a drinking water sterilizing method for rural area features that the physical sterilization of water can be realized by heating, filtering, ultraviolet ray and radiation. The boiling is most common, the operation is simple and convenient, and the effect is reliable.
2. A method for disinfecting drinking water in rural areas can safely disinfect drinking water in rural areas, can kill most pathogenic microorganisms harmful to human bodies in water, and prevent diseases from being infected through drinking water. The invention aims to conveniently and quickly complete all disinfection, achieve better disinfection effect and create social benefit.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without making any inventive changes.
Fig. 1 is an overall structural view of the present invention.
FIG. 2 is a view showing the structure of a filter layer of the present invention.
The corresponding device and equipment names are marked in the attached drawings:
in the figure, 1-a water conveying pipe, 2-a filter layer, 201-a filter cavity, 202-a filter element, 3-a sterilization chamber, 4-an ultraviolet sterilizer, 5-a first chemical sterilization chamber, 6-a second chemical sterilization chamber, 7-a third chemical sterilization chamber, 8-an impurity pushing device, 801-an impurity pushing rod, 802-a material pushing plate and 9-a stirring device.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings.
As shown in fig. 1 and 2, the invention relates to a rural drinking water disinfection method, which comprises a water delivery pipe 1, wherein the drinking water disinfection method comprises physical disinfection and chemical disinfection;
the physical disinfection comprises the following steps:
the water conveying pipe 1 is connected with a filter layer 2, the filter layer 2 is detachably connected with the water conveying pipe 1, the filter layer 2 comprises a filter cavity 201, a filter element 202 is inserted into the filter cavity 201, and the filter element 202 is a sand filter, an asbestos filter plate or a fiber ester filter membrane;
the filter layer 2 is connected with a sterilizing chamber 3, a plurality of ultraviolet disinfectors 4 are arranged at the top of the sterilizing chamber 3, and the ultraviolet disinfectors 4 release 240-280 nm wave bands; the bottom of the sterilizing chamber 3 is provided with a sundries pushing device 8, the sundries pushing device 8 comprises a telescopic sundries pushing rod 801, and the sundries pushing rod 801 is connected with a sundries pushing plate 802;
the chemical disinfection comprises the following steps:
the sterilizing chamber 3 is connected with a first chemical sterilizing chamber 5, a chlorine-containing preparation is put in the first chemical sterilizing chamber 5, the chlorine-containing preparation comprises bleaching powder, calcium hypochlorite, chloramine or sodium dichloroisocyanurate, and the chlorine-containing preparation is added so that the addition amount of chlorine is 0.5 mg/L to 2.5 mg/L;
the first chemical disinfection chamber 5 is connected with a second chemical disinfection chamber 6, and chlorine dioxide is placed in the second chemical disinfection chamber 6;
the second chemical disinfection chamber 6 is connected with a third chemical disinfection chamber 7, ozone passes through the third chemical disinfection chamber 7, the ozone amount is 0.5 mg/L to 6 mg/L, and the ozone introducing time is 4 minutes to 6 minutes;
stirring devices 9 are arranged in the first chemical disinfection chamber 5, the second chemical disinfection chamber 6 and the third chemical disinfection chamber 7.
Specifically, the ultraviolet sterilizer 4 is a straight type or a sleeve type.
Specifically, the chlorine-containing preparation is added so that the amount of chlorine added is 1 mg/l to 2 mg/l.
In particular, the third chemical decontamination chamber 7 comprises an ozone generator.
Specifically, the amount of ozone is 1 mg/l to 4 mg/l.
Specifically, the sterilizing chamber 3 is made of transparent material.
The invention comprises the following steps: the purpose of drinking water disinfection is to kill most of the pathogenic microorganisms harmful to human health in water, including bacteria, viruses, protozoa, etc., to prevent diseases from being transmitted through drinking water. Because the disinfection treatment can not completely kill all microorganisms in water, the disinfection treatment can minimize the risk of water-mediated infectious diseases caused by drinking water to reach a completely acceptable level under the condition of meeting the microbiological standard of the drinking water quality. The current drinking water disinfection technical means is single, not only is difficult to carry out effective disinfection to complicated water, but also wastes manpower and material resources, and can not conveniently and rapidly complete the steps of drinking water disinfection. Therefore, the research on the disinfection integration technology can greatly improve the water purification efficiency and ensure the safety of drinking water.
(1) Physical disinfection
The physical disinfection of water can be achieved by heating, filtering, ultraviolet radiation, radiation disinfection, etc. The boiling is most common, simple and convenient, has reliable effect and is suitable for treating a small amount of water. The filtering method is simple and effective, but only sterilization is performed, and sand filtration, asbestos filter plates, cellulose ester filter membranes and the like are commonly used. The ultraviolet ray wave band of 240-280 nanometers has the strongest bactericidal power and is suitable for treating small amount of water. Straight-through and double-pipe uv disinfectors 4 are commonly used.
(2) Chemical disinfection
Refers to the disinfection of water with chemical disinfectants. The drinking water disinfectant commonly used at home and abroad mainly contains halogen, in particular chlorine disinfectant.
A chlorine-containing preparation: the chlorine-containing drinking water disinfectants are various, such as bleaching powder, calcium hypochlorite, chloramine, sodium dichloroisocyanurate and the like. The water quality of the water source is different, the chlorine adding amount is determined according to a chlorine demand test, and the chlorine adding amount of the water subjected to coagulation, precipitation and filtration or the clean underground water is 0.5-1.5 mg/L. When the water quality is poor, 1.0-2.5 mg/L (or 1-4 mg/L) is added. Whether the chlorine addition is appropriate or not may require assistance from a local disease prevention and control center.
Chlorine dioxide: chlorine dioxide is called fourth generation disinfectant, is the safest chemical agent recommended by WHO for treating drinking water, and is a renewal product of disinfectant. Has better effects than chlorine in many aspects of disinfection, deodorization, iron removal and the like, and does not generate chloroform carcinogenic substances. When it is used to disinfect water, it is less affected by water temp. and has better disinfecting effect on poor water than chlorine.
Thirdly, ozone disinfection: ozone is a strong oxidant and has broad-spectrum and high-efficiency sterilization effects. The sterilization speed is 600-3000 times faster than that of chlorine. The device is mainly used for disinfection of drinking water, air disinfection, fresh-keeping of food and the like. Ozone disinfection methods generally produce ozone by passing dry air or oxygen through a high voltage electric field in an ozone generator. During disinfection, the absorption liquid dissolved with ozone is fully mixed with water. Generally, the odorizing oxygen is 0.5-1.5 mg/L for 5 minutes, the residual ozone concentration in water is kept at 0.1-0.5 mg/L, and the odorizing oxygen is 3-6 mg/L for seriously polluted water. In recent years, ozone generators for electrolyzing water have been developed, which have simple structure, small volume, light weight and no noise, and the products have no harmful chloride and can be directly used for drinking water disinfection.
The invention can safely disinfect drinking water in rural areas, can kill most of pathogenic microorganisms harmful to human bodies in the water, and prevents diseases from being transmitted through the drinking water. The invention aims to research a method capable of conveniently and quickly completing all disinfection, achieving a better disinfection effect and creating social benefits.
The drinking water in rural areas is safe, which means that residents in rural areas can timely and conveniently obtain sufficient, clean and affordable domestic drinking water. The rural drinking water safety comprises 4 evaluation indexes of water quality, water quantity, water use convenience degree and water supply guarantee rate.
(1) Water quality: the drinking water should meet the requirements of sanitary Standard for Drinking Water (GB 5749). The drinking water safety in rural areas firstly refers to the safety of drinking water. The safe drinking water is drinking water which does not cause harm to health and is drunk by a person for the lifetime, and according to the definition of the world health organization, the drinking water for the lifetime is calculated according to the base number of 70 years of life per person and 2L of drinking water per person per day. In addition, safe drinking water should also contain daily personal hygiene water, i.e., water for washing the face, bathing, gargling, and the like. If the water contains harmful substances, the substances may enter the human body through skin contact, breath absorption, etc. during bathing and gargling, thereby affecting the health of the human body.
(2) Water quantity: can meet the reasonable drinking water requirement of people. The drinking water for farmers is taken as the main water, the water for raising livestock and poultry, the water for the second industry and the third industry and the like are considered comprehensively, and the drinking water conforms to relevant standard regulations of village and town water supply engineering design standards and the like.
(3) The water use convenience degree is as follows: centralized water supply engineering in plain areas and shallow mountainous areas requires all water supply to enter households in principle; the mountainous area, the pastoral area and the like which do not have the condition of entering the home are supplied with water by centralized water supply points or decentralized projects, and the round trip time of manually getting water is not more than 10 min.
(4) Water supply guarantee rate: the water supply guarantee rate of over ten million people (the daily water supply scale is 1000m3/d or 10000 people benefiting the population) water supply projects is not lower than 95 percent, and the water supply guarantee rate of other water supply projects is not lower than 90 percent.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.

Claims (6)

1. A drinking water disinfection method in rural areas comprises a water delivery pipe and is characterized in that the drinking water disinfection method comprises physical disinfection and chemical disinfection;
the physical disinfection comprises:
the water conveying pipe is connected with a filter layer, the filter layer is detachably connected with the water conveying pipe and comprises a filter cavity, a filter element is inserted into the filter cavity, and the filter element is a sand filter, an asbestos filter plate or a fiber ester filter membrane;
the filter layer is connected with a sterilizing chamber, a plurality of ultraviolet disinfectors are arranged at the top of the sterilizing chamber, and the ultraviolet disinfectors release wave bands of 240 nanometers to 280 nanometers; the bottom of the sterilizing chamber is provided with a sundry pushing device, the sundry pushing device comprises a telescopic sundry pushing rod, and the sundry pushing rod is connected with a material pushing plate;
the chemical decontamination comprises:
the sterilizing chamber is connected with a first chemical sterilizing chamber, a chlorine-containing preparation is put into the first chemical sterilizing chamber, the chlorine-containing preparation comprises bleaching powder, calcium hypochlorite, chloramine or sodium dichloroisocyanurate, and the chlorine-containing preparation is added so that the addition amount of chlorine is 0.5 mg/L to 2.5 mg/L;
the first chemical disinfection chamber is connected with a second chemical disinfection chamber, and chlorine dioxide is placed in the second chemical disinfection chamber;
the second chemical disinfection chamber is connected with a third chemical disinfection chamber, ozone passes through the third chemical disinfection chamber, the ozone amount is 0.5-6 mg/L, and the ozone introducing time is 4-6 minutes;
and stirring devices are arranged in the first chemical disinfection chamber, the second chemical disinfection chamber and the third chemical disinfection chamber.
2. The rural drinking water disinfection method of claim 1, wherein the ultraviolet sterilizer is a straight-flow type or a sleeve type.
3. The rural drinking water disinfection method of claim 1, wherein the chlorine-containing preparation is added so that the amount of chlorine added is 1 mg/l to 2 mg/l.
4. The rural drinking water disinfection method of claim 1, wherein the third chemical disinfection chamber includes an ozone generator.
5. The rural drinking water disinfection method of claim 1, wherein the amount of ozone is 1 mg/l to 4 mg/l.
6. The rural drinking water disinfection method of claim 1, wherein the sterilizing chamber is made of transparent material.
CN202111632555.4A 2021-12-29 2021-12-29 Rural drinking water disinfection method Pending CN114230066A (en)

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Application Number Priority Date Filing Date Title
CN202111632555.4A CN114230066A (en) 2021-12-29 2021-12-29 Rural drinking water disinfection method

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045773A1 (en) * 2006-09-26 2008-04-03 Peter Koch Water Purification System
CN101607771A (en) * 2008-06-17 2009-12-23 中山大学 Multi-source ultraviolet light catalyzed chlorine disinfection method for drinking water
CN203360196U (en) * 2013-07-03 2013-12-25 同济大学 Disinfection system for degrading bromization disinfection byproduct
CN106365367A (en) * 2016-10-19 2017-02-01 天津泰达津联自来水有限公司 Multi-stage combined disinfection method for domestic drinking water
CN212050934U (en) * 2020-04-29 2020-12-01 铸神科技无锡有限公司 Movable sewage treatment equipment
CN214457397U (en) * 2021-01-14 2021-10-22 青岛中宇环保科技集团有限公司 Filtering and sterilizing equipment for purifying underground water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045773A1 (en) * 2006-09-26 2008-04-03 Peter Koch Water Purification System
CN101607771A (en) * 2008-06-17 2009-12-23 中山大学 Multi-source ultraviolet light catalyzed chlorine disinfection method for drinking water
CN203360196U (en) * 2013-07-03 2013-12-25 同济大学 Disinfection system for degrading bromization disinfection byproduct
CN106365367A (en) * 2016-10-19 2017-02-01 天津泰达津联自来水有限公司 Multi-stage combined disinfection method for domestic drinking water
CN212050934U (en) * 2020-04-29 2020-12-01 铸神科技无锡有限公司 Movable sewage treatment equipment
CN214457397U (en) * 2021-01-14 2021-10-22 青岛中宇环保科技集团有限公司 Filtering and sterilizing equipment for purifying underground water

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Application publication date: 20220325