CN109502851B

CN109502851B - Healthy commercial water dispenser of comprehensive accuse bacterial type

Info

Publication number: CN109502851B
Application number: CN201811526782.7A
Authority: CN
Inventors: 肖伟; 刘颖惠; 肖恩佑
Original assignee: Emmanuel Shenzhen Health Water Technology Co ltd
Current assignee: Emmanuel Shenzhen Health Water Technology Co ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2022-05-24
Anticipated expiration: 2038-12-13
Also published as: CN109502851A

Abstract

The invention discloses a comprehensive bacteria-control type healthy commercial water dispenser which comprises a normal-temperature water unit and a heating unit. The normal-temperature water unit is any combination of a ceramic filter element or an ultrafiltration membrane filter element, a first ultraviolet sterilization device, an activated carbon filter element and a second ultraviolet sterilization device; the heating unit comprises a filtering device and a heating device; the filtering device is a reverse osmosis filtering device or a nanofiltration filtering device; the heating device is a heating tank and/or a thick film heating body. Compared with the prior art, the device adopts the processes of ceramic filtration or ultrafiltration filtration, ultraviolet sterilization, active carbon filtration and ultraviolet sterilization filtration, the whole device can comprehensively control harmful microorganisms and dirt blockage, a normal-temperature water system retains mineral substances of drinking water and simultaneously removes harmful substances to the maximum extent, the health of the water is best improved to reach the level of direct drinking, no additional power is added, full-flow filtration is realized, water is saved, and the requirements of environmental protection and energy conservation are met; furthermore, the hot water system adopts a reverse osmosis structure, which mainly eliminates the negative effect of the scaling substances in the water on the heating device.

Description

Comprehensive bacteria-control healthy commercial water dispenser

Technical Field

The invention relates to a comprehensive bacteria-control type healthy commercial water dispenser.

Background

With the development of social industrialization and the increase of the geometric grade of vehicles such as automobiles and the like, a large amount of industrial waste gas, waste water, automobile exhaust and the like are generated, so that artificial pollution and haze exist, the water quality of a reservoir is adversely affected along with the falling of rainwater, the water quality of tap water is not optimistic, and meanwhile, a secondary water supply tank also has some problems, particularly, the total number of bacterial colonies and two insects are specially specified in the national standard of sanitary Standard for Drinking Water (GB 5749-2006), and around the problems, a commercial water dispenser mainly adopts a reverse osmosis filtering technology at present.

Traditional commercial water dispenser is with reverse osmosis technique as the core, and huge commercial water dispenser is taken as an example, and it is through the water treatment process of 2 grades of PP cotton filtration + composite filter core (KDF + active carbon) trinity filter core (silver-carrying active carbon + ACF) + RO machine + ozone, wherein: (1) the PP cotton belongs to precision filtration, and is mainly used for physically filtering granular impurities in water through the pore diameter and the hydrophilicity of materials, so that suspended matters and certain turbidity in water are reduced, and bacteria are removed to a certain extent through smaller pore diameters; (2) the composite filter element is used for adsorbing organic matters in water and simultaneously reacting with residual chlorine in the water, so that a subsequent reverse osmosis membrane is protected from oxidation, and the service life of the reverse osmosis membrane is prolonged; the organic matters and bacteria are adsorbed, so that the biological adsorbent is easy to become a hotbed of microorganisms; (3) the whole process adopts a reverse osmosis device, the reverse osmosis adopts the reverse principle of a permeable membrane, and in turn, pressure is applied to the concentrated water side, so that fresh water is produced; the reverse osmosis membrane with tap water as a water source produces water which is basically pure water and almost contains no mineral substances, and the ratio of reverse osmosis produced wastewater is 1: 1-3, water is not saved.

The water purification process has the following problems:

1) all reverse osmosis processes are adopted, all substances in water are removed completely, and therefore more waste water is generated, and the waste water ratio is up to 1: 1 or even 1: 2.

2) and by adopting excessive active carbon combinations and water tank devices, secondary pollution of microorganisms is easily caused, and the service life of reverse osmosis is also shortened.

3) The filter element, especially the preceding stage filter element, is replaced more frequently.

4) Chemical disinfection, such as ozone disinfection, is widely adopted, the control is not good, and more disinfection byproducts are increased, so that the health is harmed.

The filter element of the common water dispenser is an active carbon filter element. As a first generation porous carbon adsorption material, activated carbon is the most commonly used adsorption material due to the characteristics of wide source, moderate price and the like, but because the characteristics of high ash content, small pore volume, wide micropore distribution, small specific surface area, poor adsorption selectivity and the like of common activated carbon exist, and due to the limitations of surface functional groups and electrochemical properties of the common activated carbon, the adsorption removal effect of the common activated carbon on pollutants is limited, the original granular and powdery activated carbon obviously exposes a plurality of insurmountable defects, and the physical shape of the common activated carbon causes the common activated carbon to be inconvenient in application and operation, poor in engineering adaptability and the like, and along with the improvement of production and living level, the performance requirements of people on the adsorption materials such as the activated carbon and the like are higher and higher, so the activated carbon can not meet the requirements of domestic and foreign markets. The activated carbon fiber is a second generation novel carbon adsorption material, is a porous fibrous adsorption material, and has great difference with activated carbon in structure. The activated carbon fiber has the advantages of small fiber diameter, high specific surface area, developed microporous structure, small pore diameter, narrow distribution, large adsorption capacity, high adsorption and desorption speed, easy regeneration, capability of being prepared into corresponding forms according to specific requirements, such as felt, cloth and the like, convenient use and the like. The matrix material for making the activated carbon fiber is many, such as polyacrylonitrile, polyvinyl alcohol, viscose fiber, phenolic resin fiber, pitch-based fiber, etc. The raw materials are pre-oxidized, carbonized and activated to prepare the activated carbon fiber. Especially, polyacrylonitrile-based activated carbon fiber contains nitrogen functional groups, has special adsorption capacity to sulfur compounds and nitrogen compounds, and has a wide application range. However, the wide use of activated carbon fibers is limited, mainly due to cost and fiber properties, which limits their wide application.

Based on the above problems, there is a need to provide a comprehensive bacteria-control type healthy commercial water dispenser which can solve the problems.

Disclosure of Invention

The invention aims to solve the technical problem of providing a comprehensive bacteria-control type healthy commercial water dispenser.

The invention is realized by the following technical scheme:

a comprehensive bacteria-control healthy commercial water dispenser sequentially comprises a normal-temperature water unit and a heating unit.

The normal-temperature water unit:

sequentially comprises a ceramic filter element or an ultrafiltration membrane filter element and an active carbon filter element;

or sequentially comprises a ceramic filter element or an ultrafiltration membrane filter element, an active carbon filter element and an ultraviolet sterilization device;

or sequentially comprises a ceramic filter element or an ultrafiltration membrane filter element, an ultraviolet sterilization device and an active carbon filter element;

or sequentially comprises a ceramic filter element or an ultrafiltration membrane filter element, a first ultraviolet sterilization device, an active carbon filter element and a second ultraviolet sterilization device; preferably, the ultraviolet sterilization device is an ultraviolet cavity; the active carbon filter element is an ACF filter element filter tank. In an embodiment, the first ultraviolet sterilization device is a first ultraviolet cavity and/or a second ultraviolet cavity; the second ultraviolet sterilization device is a third ultraviolet cavity. The ultraviolet cavity is often used with a ballast in practical use.

And a TOC detection module is arranged in front of the second ultraviolet sterilization device.

Preferably, the TOC detection module is arranged between the activated carbon filter element and the second ultraviolet sterilization device.

The heating unit comprises a filtering device and a heating device;

preferably, the filtering device is a reverse osmosis filtering device or a nanofiltration filtering device; preferably, the heating device is a heating tank and/or a thick film heating body. Preferably, the reverse osmosis membrane filtering device is an RO filtering tank.

In one embodiment of the invention, the comprehensive bacteria control type healthy commercial water dispenser comprises a body, a switch valve is arranged at the position of a water inlet end of the body and connected with a normal-temperature water unit, a TOC detection module is arranged at the position of the inner side of the normal-temperature water unit, the normal-temperature water unit is connected with a normal-temperature water magnetic valve and a pressure switch, the normal-temperature water magnetic valve is connected with a water outlet faucet, a fifth flushing magnetic valve is connected at the position of the bottom of the pressure switch and connected with a booster pump, a water distribution pipe is arranged at the position between the normal-temperature water magnetic valve and the normal-temperature water unit and connected with a fourth flushing magnetic valve, a reverse osmosis heating treatment unit is connected at the position of the intersection point of the fourth flushing magnetic valve and the booster pump, a waste water pipe is arranged at the position of the top surface of the reverse osmosis heating treatment unit, the waste water pipe is connected with a waste water valve, a first water distribution pipe is arranged at a position between the normal-temperature water magnetic valve and the normal-temperature water unit, a first flushing magnetic valve is connected to the position at the bottom of the first water distribution pipe and connected with the waste water valve, and the reverse osmosis heating treatment unit is connected with the water outlet faucet.

Preferably, the normal temperature water unit includes ceramic filter core or milipore filter core, the position department of ceramic filter core or milipore filter core right flank is provided with first ultraviolet cavity and second ultraviolet cavity, the position department on second ultraviolet cavity right side is connected with the second and washes the magnetic valve and the third and wash the magnetic valve, the position department that the magnetic valve right flank was washed to the second is provided with ACF filter core and filters the jar, ACF filter core filter jar with the third cross section of washing the magnetic valve is connected with third ultraviolet cavity.

Preferably, the ACF filter element filter tank is an activated carbon fiber filter element.

Preferably, reverse osmosis heat treatment unit includes that RO filters the jar, RO filters the jar and is provided with two exports, is located the top export connection waste pipe is led, another export connection has the heating jar, the position department of heating jar left surface is connected with the through-flow pump, the position department of through-flow pump output is connected with the thick film heat-generating body, the other end of thick film heat-generating body with it is connected to go out tap.

Preferably, the position department that RO filtered the jar and intake the end is provided with and detects solenoid valve c, RO filter the jar with position department between the waste water valve is provided with and detects solenoid valve a, detect solenoid valve c with position department between the waste water valve is provided with and detects solenoid valve b, detect solenoid valve b with detect solenoid valve a is the side by side relation, the waste water valve with first washing solenoid valve junction is provided with the flow monitoring module, the other end position department of flow monitoring module is provided with TDS detection module.

The operating principle of RO detection is as follows:

setting an RO detection key, and pressing an RO detection key;

1. when the booster pump is in use, the TDS2 and the flow rate Q2 of the concentrated water are detected immediately, after the data are successfully read and stored, the detection solenoid valves a and c are closed, the detection solenoid valve b is opened, the TDS3 and the flow rate Q3 of the inlet water are read, and the water dispenser returns to the use state after the reading is finished.

When the RO membrane has no leakage, Q2/Q3 is more than 0.65, which indicates that the pollution and blockage of the RO reaches the water efficiency limit, the RO membrane needs to be replaced, and an alarm is prompted.

TDS2/TDS3 ═ 1-Q when there is a leak condition_{Leakage of}) And 0.65, in the case of water efficiency limit, when the total leakage amount accounts for 5% of the total water yield, TDS2/TDS1 is 1.5, and the RO leakage standard is used as the RO leakage standard to prompt an alarm.

After comparison, the RO membrane is replaced when the comparison is carried out first.

2. When the booster pump of the water dispenser is stopped, the 'RO detection key' is pressed, the booster pump is started after the 90-second flushing process is finished, the use pressure is reached within 5 seconds, and the process of 1 is repeated.

The working process and principle of the invention are as follows:

one, normal temperature water unit

The purification process of the comprehensive bacteria-control type healthy commercial water dispenser adopts the following technical scheme:

the method comprises the following steps: primary filtering by a ceramic filter element or an ultrafiltration membrane filter element; the method comprises the following steps:

I) leading tap water to a ceramic filter element or an ultrafiltration membrane filter element through a water pipe;

II) intercepting and filtering suspended particles and microorganisms in the tap water by using a ceramic filter element or an ultrafiltration membrane filter element, and forming primary filtered water flow to the ultraviolet cavity after filtering;

III) continuously disinfecting microorganisms intercepted on the surface of the ceramic filter element or the ultrafiltration membrane filter element in real time by residual chlorine carried by tap water;

in this step: although the concentration of residual chlorine in tap water in a tap water plant is low, the disinfection effect of the residual chlorine is related to the product of the concentration and the action time, so that the filtered microorganisms are continuously acted for a long time to kill, and the microbial pollution is reduced to the minimum from the source, thereby forming the self-cleaning effect and being beneficial to repeated use; after the primary ceramic filtration, the water becomes clean and basically has no pollution of pathogenic bacteria and two insects; wherein the second insect is Giardia and Cryptosporidium.

Step two: high-strength ultraviolet sterilization and disinfection: the method comprises the following steps:

I) guiding the water filtered in the step one into an ultraviolet cavity through a water pipe;

II) a low-pressure high-intensity ultraviolet lamp is arranged in the ultraviolet cavity, and the wavelength range of the generated ultraviolet is 253.7 nm; with an irradiation dose of 40mj/cm²The first-stage filtered water flowing through the ultraviolet disinfection cavity entersSterilizing, and effectively killing residual microorganisms and bacterial colonies possibly existing; forming secondary filtered water;

in this step: the pollution degree of the third-level activated carbon fiber filter element from bacterial colonies and nitrate reducing bacteria is further strengthened and protected to the minimum;

step three: and (3) three-stage filtration of the ACF filter element: the method comprises the following steps:

I) guiding the secondary filtered water generated in the step two into the ACF filter element cavity through a water pipe;

II) an ACF cylinder type filter element is arranged in the ACF filter element filtering tank; when the second-stage filtered water passes through the ACF cylinder type filter element, the second-stage filtered water is subjected to deep adsorption purification again; adsorbing organic matters in the secondary filtered water, removing residual chlorine, disinfection byproducts and the like, including trihalomethane, and forming tertiary filtered water;

in this step: the ACF filter core is an activated carbon fiber filter core; the filter element has high iodine value and surface area which are several times of those of a common active carbon filter element, can quickly and efficiently adsorb organic matters in water and remove residual chlorine and disinfection by-products THMs (trihalomethanes), and can ensure that ACF can not become a hotbed of microorganisms while fully playing the high performance of the ACF due to the first and second levels of filtration and ultraviolet irradiation control on the microorganisms, so that the efficient working time is prolonged, the ACF is replaced after adsorption saturation, and the optimal combination condition of high-quality, healthy and safe direct drinking water is provided for one year.

Step four: ultraviolet ray filtration four-stage disinfection: the method comprises the following steps:

I) guiding the three-stage filtered water generated in the step three into an ultraviolet cavity through a water pipe;

II) ultraviolet instantaneous disinfection: the LED ultraviolet lamp is arranged in the ultraviolet cavity, and the ultraviolet lamp is characterized in that the ultraviolet lamp can be started and stopped frequently, the service life of a lamp tube is not influenced, meanwhile, the irradiation dose can be reached by instantaneous lighting, the killing capacity of pathogenic microorganisms such as escherichia coli is 99.9%, and four-stage filtering sterilization water is formed.

III) carrying out secondary ultraviolet disinfection on the three-stage filtered water by using the ultraviolet disinfection lamp in the step II) to form purified water for direct drinking.

In this step: the ultraviolet ray is adopted to reduce the risk of microorganisms to the minimum and reach the water quality level which can be directly drunk.

Meanwhile, the microbial pollution is reduced to the minimum, so that the service life of the reverse osmosis membrane and the nanofiltration membrane is prolonged.

Heating unit

The method comprises the following steps: the water after the pretreatment enters a reverse osmosis filtering device or a nanofiltration filtering device after being pressurized to generate pure water.

Step two: the generated pure water enters a heating tank, the pure water is stored in the heating tank and is electrically heated and insulated, the temperature is controlled to be 70 +/-10 ℃, and the pasteurization capacity and the sterilization capacity are high.

Step three: when a user uses hot water, the water temperature is instantly heated to 98 ℃ through the thick film heating body, and the hot water is supplied to the user.

The heating unit of the invention adopts a reverse osmosis or nanofiltration-electric heating heat preservation-thick film instantaneous heating system, which ensures the water quality to be pure, the heating system is not scaled, and simultaneously, the heating tank has the functions of heating, heat preservation, sterilization and water quantity balancing: meanwhile, the thick film instantaneous heating device is matched, so that energy is saved, and the temperature is quickly and accurately adjusted.

Three, regular flushing unit

The invention effectively avoids the microbial pollution caused by the non-use of the water dispenser at night in a mode of flushing for 6 hours regularly.

Although tap water has the property of national endorsement and the water quality is relatively safe, the water discharged from a tap water plant or entering a secondary water supply water tank meets the sanitary standard for drinking water GB5749-2006, but the high-speed development of economy brings about a certain degree of reduction of the environmental water quality. Based on the above discussion, the present invention is based on the following principles: 1) the principle of saving water and replacing filter element materials to the maximum extent. 2) The beneficial minerals of tap water are preserved as much as possible, and harmful substances and pathogenic bacteria are removed.

The water purification process of the comprehensive bacteria control type healthy commercial water dispenser adopts a plurality of combined filtration processes of a ceramic filter element or an ultrafiltration membrane filter element, an active carbon filter element, a reverse osmosis filtration device or a nanofiltration filtration device, can comprehensively control harmful microorganisms and dirt blockage, adopts a ceramic filtration or ultrafiltration filtration + ultraviolet sterilization + active carbon filtration + ultraviolet sterilization process aiming at active carbon in a normal-temperature water unit, protects the active carbon from being polluted by the microorganisms to the minimum extent, thereby exerting the super-strong adsorption capacity to the maximum extent, realizing the retention of mineral substances of drinking water, removing harmful substances to the maximum extent, improving the water health to the maximum extent, achieving the level of direct drinking, not additionally increasing power, carrying out full-physical full-flow filtration, being very healthy and water-saving, generating the minimum solid and waste water and meeting the requirements of environmental protection and energy conservation.

The heating unit adopts a reverse osmosis or nanofiltration plus heating tank and/or a thick film heating body form, the heating tank is in a pasteurization state for a long time, has strong capability of controlling microorganisms,

meanwhile, the function of automatic flushing is regularly performed every day, so that the growth of microorganisms is inhibited for a long time and powerfully.

A TOC detection module: the TOC detection device in the example employs a real-time online water quality detector model WQM01A, available from bit atom corporation.

Heating a tank: has the capability of electric heating and heat preservation, the temperature is controlled to be 70 plus or minus 10 ℃, the pasteurization capability and the sterilization capability are high.

Thick film heating element: the thick film heating element in the embodiment adopts a flat thick film heating element, and the flat thick film heating element adopts XHD-JPY2 series of Guangdong Jibao electrical appliances science and technology Limited company.

The flow detection module: the flow detection module in the embodiment adopts SEN-HZ06k series of Seisahl electronic technology, Inc. of Changshan, Shunddistrict.

TDS detection module: the TDS detection module in the embodiment adopts a TDS-57L series of Ironlun practical Co Ltd of Dongguan

And (4) an RO filtering tank: the RO filter tank in the example adopts a reverse osmosis membrane element of the Dow TW 30-3012-500.

The invention has the beneficial effects that: the device adopts a plurality of combined filtering processes of a ceramic filter element or an ultrafiltration membrane filter element, an active carbon filter element, a reverse osmosis filtering device or a nanofiltration filtering device, the whole device can comprehensively control harmful microorganisms and dirt blockage, a normal-temperature water system retains mineral substances of drinking water and simultaneously removes harmful substances to the maximum extent, the health of the water is best improved to reach the level of direct drinking, no additional power is added, full-flow filtration is realized, water is saved, and the requirements of environmental protection and energy conservation are met; the hot water system adopts a reverse osmosis or nanofiltration structure, and mainly eliminates the negative influence of the scaling substances in water on the heating device; the modified activated carbon fiber has the advantages of large specific surface area, high adsorption speed, less impurities and the like, can adsorb pollutants such as organic matters, peculiar smell, pigments and the like in water, improves the hydrophilic property, the antibacterial property and the like of the activated carbon fiber, and has wide application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The activated carbon fiber filter element is prepared from modified activated carbon fibers according to a conventional process.

The preparation method of the modified activated carbon fiber comprises the following steps:

heating the viscose fiber to 700-900 ℃ under the protection of nitrogen, introducing water vapor containing hydrogen peroxide for activation, wherein the mass concentration of the hydrogen peroxide in the water vapor of the hydrogen peroxide is 3-10%, and the volume ratio of nitrogen to the water vapor is 1: (0.5-2), stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to obtain the activated carbon fiber;

II, mixing nitric acid and absolute ethyl alcohol according to the weight ratio of (0.5-0.7): 10, stirring at 40-50 ℃, and performing ultrasonic treatment for 10-35min after uniformly stirring to obtain an acid treatment solution; soaking activated carbon fiber in acid treatment solution at 40-50 deg.C for 3-8h, washing with water to neutrality, and drying to obtain modified product;

mixing sodium dodecyl sulfate, silver nitrate and water, wherein the mass ratio of the sodium dodecyl sulfate to the silver nitrate to the deionized water is (0.04-0.07): (0.3-0.8): (15-30), uniformly stirring to obtain a mixed solution, adding a modified product accounting for 3-6% of the mass of the mixed solution into the mixed solution, placing the mixed solution in a constant-temperature shaking box at 30-40 ℃ to shake for 5-20min, adding an antibacterial agent accounting for 1-3% of the mass of the mixed solution, continuing to shake for 120min, performing suction filtration, removing filtrate, and performing washing and drying treatment to obtain the antibacterial agent.

Preferably, the preparation method of the modified activated carbon fiber comprises the following steps:

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of (0.5-0.7): (0.1-0.2): 10, stirring at 40-50 ℃, and performing ultrasonic treatment for 10-35min after uniformly stirring to obtain an acid treatment solution; soaking activated carbon fiber in acid treatment solution at 40-50 deg.C for 3-8h, washing with water to neutrality, and drying to obtain modified product;

More preferably, the preparation method of the modified activated carbon fiber comprises the following steps:

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of (0.5-0.7): (0.1-0.2): 10, stirring at 40-50 ℃, and performing ultrasonic treatment for 10-35min after uniformly stirring to obtain an acid treatment solution; soaking the activated carbon fiber in acid treatment liquid at 40-50 ℃ for 3-8h, then placing the activated carbon fiber in microwave treatment at 40-50 ℃ under the condition that the microwave power is 200-400W for 3-10min, taking out the activated carbon fiber to obtain the activated carbon fiber subjected to microwave treatment, washing the activated carbon fiber with water to be neutral, and drying the activated carbon fiber to obtain a modified product;

Still more preferably, the preparation method of the modified activated carbon fiber comprises the following steps:

i, heating viscose fibers to 700-900 ℃ under the protection of nitrogen, introducing water vapor containing hydrogen peroxide for activation, wherein the mass concentration of the hydrogen peroxide in the water vapor of the hydrogen peroxide is 3-10%, and the volume ratio of nitrogen to the water vapor is 1: (0.5-2), stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to obtain the activated carbon fiber;

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of (0.5-0.7): (0.1-0.2): 10, stirring at 40-50 ℃, and performing ultrasonic treatment for 10-35min after uniformly stirring to obtain an acid treatment solution; soaking the activated carbon fiber in acid treatment liquid at 40-50 ℃ for 3-8h, then placing the activated carbon fiber in microwave treatment at 40-50 ℃ under the condition that the microwave power is 200-; according to the formula (3-5): mixing the phosphomolybdic heteropoly acid ionic liquid and absolute ethyl alcohol according to the mass ratio of 100, uniformly stirring to obtain an impregnation liquid, putting the acid-treated activated carbon fiber into the impregnation liquid with the mass 9-15 times that of the acid-treated activated carbon fiber, soaking for 2-5h at the temperature of 20-30 ℃, taking out to obtain the impregnated activated carbon fiber, and washing and drying to obtain a modified product;

The antibacterial agent comprises carboxylic acid halamine compound and/or carboxymethyl chitosan zinc.

Preferably, the compound is prepared from carboxylic acid halamine compound and carboxymethyl chitosan zinc according to the weight ratio of (1-5): (1-5) in a mass ratio.

The preparation method of the phosphomolybdic heteropoly acid ionic liquid comprises the following steps:

i, according to (2-4): (1-1.5) mixing bromopropane and N-methylimidazole, reacting at 60-70 ℃ for 12-24h, cooling, performing suction filtration, removing filtrate to obtain a reactant A, washing the reactant A with ethyl acetate, and performing rotary evaporation to obtain brominated ionic liquid;

mixing phosphotungstic heteropoly acid and water, uniformly stirring, adding the brominated ionic liquid, and continuously stirring for 1-3h, wherein the mass ratio of the phosphotungstic heteropoly acid to the water to the brominated ionic liquid is (0.05-0.1): (0.02-0.05): 100, carrying out suction filtration, removing filtrate to obtain a reactant B, and washing and drying the reactant B to obtain the catalyst.

The preparation method of the carboxylic acid halamine compound comprises the following steps:

i, according to (1-2): 10, mixing cyanuric acid and water, uniformly stirring to obtain a mixed solution A, adding sodium hydroxide accounting for 5-15% of the mixed solution A by mass, continuously stirring for 20-50min to obtain a mixed solution B, adding chloroacetic acid accounting for 5-25% of the mixed solution B by mass, stirring and reacting for 5-15h at 20-40 ℃, adjusting the pH value to 3-5, performing suction filtration, and removing filtrate to obtain a precursor;

according to the formula 1: (3-6) mixing the precursor and 10-30 wt% of sodium hydroxide aqueous solution, stirring at 20-35 ℃ for 20-50min, adding 5-15 wt% of sodium hypochlorite solution which is 8-16 times of the mass of the precursor, continuously stirring at 20-35 ℃ for reaction for 1-3h, adjusting the pH value to 3-5, performing suction filtration, removing the filtrate, and drying to obtain the catalyst.

The preparation method of the carboxymethyl chitosan zinc comprises the following steps: according to the formula (2-4): 10, mixing carboxymethyl chitosan and water, and uniformly stirring to obtain a carboxymethyl chitosan solution; then adding zinc nitrate with the mass 2-4.5 times that of the carboxymethyl chitosan solution, and reacting for 0.5-3h to obtain reaction liquid; and adding acetone with the volume 5-20 times of that of the reaction solution into the reaction solution, standing, centrifuging, removing supernate, washing, and drying to obtain the product.

Introduction of raw materials and equipment in the examples:

viscose fibres, type 1.33dtex X38 mm, fibre length 38mm and fibre diameter 23 μm, available from Denton chemical fibre group, Inc.

Silver nitrate, CAS number: 7761-88-8, product number: s818267, available from Shanghai Michelin Biochemical technology, Inc.

Cerium ammonium nitrate, CAS No.: 16774-21-3, reagent grade, available from Chishiai (Shanghai) chemical industries development Co., Ltd.

Bromopropane, CAS No.: 106-94-5, model 701, purchased from ChangYu environmental protection Co., Ltd in Shenzhen.

N-methylimidazole, CAS No.: 616-47-7, a premium grade, available from jin ao chemical company, ltd, Anhui province.

The preparation method of the phosphotungstic heteropoly acid refers to the method shown in example 1 in Chinese patent with application number 201110100130.9.

Cyanuric acid, CAS number: 108-80-5 model AAA, purchased from Jinan Tian Shuo chemical Co., Ltd.

The preparation method of carboxymethyl chitosan refers to the method shown in example 1 in Chinese patent with application number 201410565155. X.

Zinc nitrate, CAS No.: 7779-88-6 mesh, 100 mesh, model XX-1208, available from Shandong Shouguangluke chemical Co., Ltd.

Sodium lauryl sulfate, CAS No.: 151-21-3, product number: s817788, available from Shanghai Michelin Biotechnology, Inc.

The activation furnace is a SG-QF1200 type high-temperature atmosphere furnace which is purchased from Shanghai Jiejie electric furnace Co.

The microwave equipment is MAS-II type normal pressure microwave synthesis/extraction reaction workstation which is purchased from Shanghai New Instrument microwave chemistry Co.

The centrifugal equipment is a TGL-16L type high-speed centrifugal machine which is purchased from Beijing Tianlian Harmony instruments and meters Co.

The constant temperature oscillation box is a ZD-85A type digital display gas bath constant temperature oscillator which is purchased from the institute of Instrument and friends of gold Tan, Changzhou city.

Example 1

As shown in fig. 1, the comprehensive bacteria-control type healthy commercial water dispenser comprises a body 1, a switch valve 101 is arranged at the position of a water inlet end of the body 1, the switch valve 101 is connected with a normal-temperature water unit 2, a TOC detection module 5 is arranged at the position of the inner side of the normal-temperature water unit 2, the normal-temperature water unit 2 is connected with a normal-temperature water magnetic valve 102 and a pressure switch 103, the normal-temperature water magnetic valve 102 is connected with a water outlet faucet 104, the position of the bottom of the pressure switch 103 is connected with a fifth flushing magnetic valve 105, the fifth flushing magnetic valve 105 is connected with a booster pump 106, a water distribution pipe is arranged at the position between the normal-temperature water magnetic valve 102 and the normal-temperature water unit 2, the water distribution pipe is connected with a fourth flushing magnetic valve 108, the position of a junction point of the fourth flushing magnetic valve 108 and the booster pump 106 is connected with a heating unit 3, and a waste water pipe is arranged at the position of the top surface of the heating unit 3, the waste water pipe is connected with a waste water valve 110, a first water dividing pipe is arranged at a position between the normal-temperature water magnetic valve 102 and the normal-temperature water unit 2, a first flushing magnetic valve 112 is connected at the bottom of the first water dividing pipe, the first flushing magnetic valve 112 is connected with the waste water valve 110, and the heating unit 3 is connected with the water outlet faucet 104.

In a preferred embodiment of the present invention, the normal temperature water unit 2 includes a ceramic filter element 201, a first ultraviolet cavity 202 and a second ultraviolet cavity 203 are disposed at a right side of the ceramic filter element 201, a second flushing magnetic valve 204 and a third flushing magnetic valve 205 are connected at a right side of the second ultraviolet cavity 203, an ACF filter cartridge filter tank 206 is disposed at a right side of the second flushing magnetic valve 204, and a third ultraviolet cavity 207 is connected at a junction of the ACF filter tank 206 and the third flushing magnetic valve 205.

In a preferred embodiment of the present invention, the ACF cartridge filter tank 206 is an activated carbon fiber cartridge.

In a preferred embodiment of the present invention, the heating unit 3 includes an RO filter tank 301, the RO filter tank 301 has two outlets, the outlet at the top is connected to a waste pipe, the other outlet is connected to a heating tank 302, a direct current pump 303 is connected to the left side of the heating tank 302, a thick film heating unit 304 is connected to the output end of the direct current pump 303, and the other end of the thick film heating unit 304 is connected to the water outlet faucet 104.

In a preferred embodiment of the present invention, a detection solenoid valve c6 is disposed at a position of a water inlet end of the RO filter tank 301, a detection solenoid valve a601 is disposed at a position between the RO filter tank 301 and the waste water valve 110, a detection solenoid valve b602 is disposed at a position between the detection solenoid valve c6 and the waste water valve 110, the detection solenoid valve b602 and the detection solenoid valve a601 are in a parallel relationship, a flow monitoring module 603 is disposed at a junction between the waste water valve 110 and the first flushing solenoid valve 112, and a TDS detection module 604 is disposed at another end position of the flow monitoring module 603.

The working principle of the RO detection key is as follows:

setting an RO detection key, and pressing an RO detection key;

TDS2/TDS3 ═ 1-Q when there is a leak_{Leakage of}) And 0.65, in the case of water efficiency limit, when the total leakage amount accounts for 5% of the total water yield, TDS2/TDS1 is 1.5, and the RO leakage standard is used as the RO leakage standard to prompt an alarm.

2. When the booster pump of the water dispenser stops, the 'RO detection key' is pressed, the booster pump is started after the 90-second flushing process is finished, the use pressure is reached within 5 seconds, and the process of 1 is repeated.

The working process and principle of the invention are as follows:

one, normal temperature water unit

the method comprises the following steps: primary filtering by a ceramic filter element; the method comprises the following steps:

I) leading tap water into the ceramic filter element through a water pipe;

III) continuously disinfecting microorganisms intercepted on the surface of the ceramic filter element in real time by residual chlorine carried by tap water;

in this step: although the concentration of residual chlorine in tap water in a tap water plant is low, the disinfection effect of the residual chlorine is related to the product of the concentration and the action time, so that the filtered microorganisms are continuously acted for a long time to kill, and the microbial pollution is reduced to the minimum from the source, thereby forming the self-cleaning effect and being beneficial to repeated use; after the primary ceramic filtration, the water becomes clean and basically has no pollution of pathogenic bacteria and two insects; wherein the two insects are Giardia lamblia and Cryptosporidium.

II) a low-pressure high-intensity ultraviolet lamp is arranged in the ultraviolet cavity, and the wavelength range of the generated ultraviolet is 253.7 nm; using an irradiation dose of 40mj/cm²Sterilizing the first-stage filtered water flowing through the ultraviolet sterilization cavity to effectively kill residual microorganisms and bacterial colonies; forming secondary filtered water;

I) guiding the secondary filtered water generated in the step two into an ACF filter element tank through a water pipe;

In the step: ultraviolet irradiation is adopted to reduce the risk of microorganisms to the minimum and achieve the water quality level which can be directly drunk.

Meanwhile, the microbial pollution is reduced to the minimum, so that the service life of the reverse osmosis membrane is prolonged.

Heating unit

The method comprises the following steps: the water after the pretreatment is pressurized and then enters a reverse osmosis filter device to generate pure water.

The heating unit of this embodiment adopts reverse osmosis-electric heat preservation-thick film instantaneous heating system, guarantees that quality of water is pure, and heating system does not scale deposit, and simultaneously, the heating tank has the effect of heating heat preservation, disinfecting and balanced water yield concurrently: meanwhile, the thick film instantaneous heating device is matched, so that energy is saved, and the temperature is quickly and accurately adjusted.

Three, regular flushing unit

meanwhile, the automatic flushing function is performed regularly every day, so that the growth of microorganisms is inhibited for a long time and powerfully.

And (3) flushing:

the system automatically tracks, automatically washes once every 6 hours since the last use or last washing, the time is 90 seconds, when automatically washing, the first 30 seconds, the ceramic filter element or the ultrafiltration membrane filter element-the first, the second ultraviolet cavity-the third ultraviolet cavity, the washing water is discharged, the probe of the second ultraviolet cavity records the intensity, strictly forbids the step of washing water to enter the RO filter tank, the middle 30 seconds, the ceramic filter element or the ultrafiltration membrane filter element-the first, the second ultraviolet cavity-the ACF filter tank-the third ultraviolet cavity, the washing water is discharged, the last 30 seconds, the ceramic filter element or the ultrafiltration membrane filter element-the first, the second ultraviolet cavity-the ACF filter tank-the third ultraviolet cavity-the RO filter tank, the low-pressure washing water is discharged, if the use is needed during the automatic washing, the automatic washing is stopped, and (5) switching to normal use, starting timing by the latest use end time for the next automatic flushing, and repeating the steps.

The invention has the beneficial effects that: the device adopts various combined processes of a ceramic filter element or an ultrafiltration membrane filter element, an active carbon filter element, a reverse osmosis filter device or a nanofiltration filter device, the whole device can comprehensively control harmful microorganisms and dirt blockage, a normal-temperature water system retains mineral substances of drinking water and simultaneously removes harmful substances to the maximum extent, the health of the water is best improved to reach the level of direct drinking, no additional power is added, full-flow filtration is realized, water is saved, and the requirements of environmental protection and energy conservation are met; the hot water system adopts a reverse osmosis or nanofiltration structure, and mainly eliminates the negative influence of the scaling substances in water on the heating device.

Example 2

The normal temperature water unit 2 comprises a ceramic filter element 201, a first ultraviolet cavity 202 and a second ultraviolet cavity 203 are arranged at the right side of the ceramic filter element 201, a second flushing magnetic valve 204 and a third flushing magnetic valve 205 are connected at the right side of the second ultraviolet cavity 203, an ACF filter element filtering tank 206 is arranged at the right side of the second flushing magnetic valve 204, and a third ultraviolet cavity 207 is connected at the intersection of the ACF filter element filtering tank 206 and the third flushing magnetic valve 205.

The ACF filter cartridge filter tank 206 is an activated carbon fiber filter cartridge.

Heating unit 3 includes that RO filters jar 301, RO filters jar 301 and is provided with two exports, is located the top export connection waste pipe, another the export connection has heating jar 302, the position department of heating jar 302 left surface is connected with through-flow pump 303, the position department of through-flow pump 303 output is connected with thick film heat-generating body 304, the other end of thick film heat-generating body 304 with it is connected to go out tap 104.

The RO filter tank 301 is provided with detection solenoid valve c6 in the position department of the end of intaking, RO filter tank 301 with position department between waste water valve 110 is provided with detection solenoid valve a601, detection solenoid valve c6 with position department between waste water valve 110 is provided with detection solenoid valve b602, detection solenoid valve b602 with detection solenoid valve a601 is the parallel relation, waste water valve 110 with first washing solenoid valve 112 junction is provided with flow monitoring module 603, the other end position department of flow monitoring module 603 is provided with TDS detection module 604.

i, placing the viscose in an activation furnace at 200cm³Heating to 850 deg.C at 5 deg.C/min under nitrogen protection, introducing water vapor containing hydrogen peroxide obtained by heating and gasifying hydrogen peroxide in water vapor of hydrogen peroxide for 1 hrThe mass concentration of hydrogen peroxide in the water vapor is 3%, and the volume ratio of nitrogen to water vapor is 1: 0.5, stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to 25 ℃ under the protection of nitrogen to obtain the activated carbon fiber;

II, mixing nitric acid and absolute ethyl alcohol according to the weight ratio of 0.6: 10, stirring the mixture for 30min at 42 ℃ at a rotating speed of 250r/min, and then performing ultrasonic treatment for 20min under the conditions that the ultrasonic frequency is 28kHz and the ultrasonic power is 400W to obtain an acid treatment solution; soaking the activated carbon fiber in an acid treatment solution at 42 ℃ for 5h, washing the activated carbon fiber to be neutral by using deionized water, and drying the activated carbon fiber at 75 ℃ for 3h to obtain a modified product;

mixing sodium dodecyl sulfate, silver nitrate and deionized water, wherein the mass ratio of the sodium dodecyl sulfate to the silver nitrate to the deionized water is 0.05: 0.5: 20, stirring for 1 hour at 30 ℃ and 100r/min to obtain a mixed solution, adding a modified product accounting for 3% of the mixed solution in mass into the mixed solution, placing the modified product in a constant-temperature shaking box at 40 ℃ and 200r/min for shaking for 10 minutes, adding an antibacterial agent accounting for 1.2% of the mixed solution in mass, placing the modified product in a constant-temperature shaking box at 40 ℃ and 200r/min for further shaking for 120 minutes, performing suction filtration, removing filtrate, and washing the obtained product with deionized water for 2 times, wherein the mass-to-volume ratio of the deionized water used for washing the product for each time is 1: 15(g/mL) and drying for 8 hours at 85 ℃ under the absolute pressure of 0.08MPa to obtain the product.

The antibacterial agent is a carboxylic acid halamine compound.

according to the formula 1.2: 10, mixing cyanuric acid and deionized water, stirring for 30min at 25 ℃ and 100r/min to obtain a mixed solution A, adding sodium hydroxide accounting for 10% of the mixed solution A by mass, keeping the temperature and the rotating speed unchanged, continuously stirring for 30min to obtain a mixed solution B, adding chloroacetic acid accounting for 10% of the mixed solution B by mass, stirring and reacting for 10h at 25 ℃ and 100r/min, adjusting the pH value to 5 by using 20 wt% hydrochloric acid aqueous solution, performing suction filtration, and removing the filtrate to obtain a precursor;

II, according to the proportion of 1: 4, mixing the precursor and a 30 wt% sodium hydroxide aqueous solution, stirring for 30min at 30 ℃ and 100r/min, adding a 5 wt% sodium hypochlorite solution which is 10 times of the mass of the precursor, continuously stirring for reacting for 2h at 25 ℃ and 100r/min, adjusting the pH value to 5 by using a 20 wt% hydrochloric acid aqueous solution, performing suction filtration, removing the filtrate, and finally drying for 12h at 60 ℃ under the absolute pressure of 0.05MPa to obtain the catalyst.

Example 3

Essentially the same as example 2, except that: the preparation method of the modified activated carbon fiber comprises the following steps:

i, placing the viscose fiber in an activation furnace at 200cm³Heating to 850 ℃ at the speed of 5 ℃/min under the protection of nitrogen gas for/min, introducing water vapor containing hydrogen peroxide for activation for 1h, wherein the water vapor containing the hydrogen peroxide is obtained by heating and gasifying the hydrogen peroxide in the water vapor containing the hydrogen peroxide, the mass concentration of the hydrogen peroxide in the water vapor containing the hydrogen peroxide is 3%, and the volume ratio of nitrogen to the water vapor is 1: 0.5, stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to 25 ℃ under the protection of nitrogen to obtain the activated carbon fiber;

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of 0.6: 0.15: 10, stirring the mixture for 30min at 42 ℃ at a rotating speed of 250r/min, and then performing ultrasonic treatment for 20min under the conditions that the ultrasonic frequency is 28kHz and the ultrasonic power is 400W to obtain an acid treatment solution; soaking the activated carbon fiber in an acid treatment solution at 42 ℃ for 5h, washing the activated carbon fiber to be neutral by using deionized water, and drying the activated carbon fiber at 75 ℃ for 3h to obtain a modified product;

mixing sodium dodecyl sulfate, silver nitrate and deionized water, wherein the mass ratio of the sodium dodecyl sulfate to the silver nitrate to the deionized water is 0.05: 0.5: 20, stirring for 1 hour at 30 ℃ and 100r/min to obtain a mixed solution, adding a modified product accounting for 3% of the mixed solution in mass into the mixed solution, placing the modified product in a constant-temperature shaking box at 40 ℃ and 200r/min for shaking for 10 minutes, adding an antibacterial agent accounting for 1.2% of the mixed solution in mass, placing the modified product in a constant-temperature shaking box at 40 ℃ and 200r/min for further shaking for 120 minutes, performing suction filtration, removing filtrate, and washing the obtained product with deionized water for 2 times, wherein the mass-to-volume ratio of the deionized water used for washing the product for each time is 1: 15(g/mL) and drying for 8h at 85 ℃ and under the absolute pressure of 0.08MPa to obtain the product.

The antibacterial agent is a carboxylic acid halamine compound.

according to the formula 1: 4, mixing the precursor and a 30 wt% sodium hydroxide aqueous solution, stirring for 30min at 30 ℃ and 100r/min, adding a 5 wt% sodium hypochlorite solution which is 10 times of the mass of the precursor, continuously stirring for reacting for 2h at 25 ℃ and 100r/min, adjusting the pH value to 5 by using a 20 wt% hydrochloric acid aqueous solution, performing suction filtration, removing the filtrate, and finally drying for 12h at 60 ℃ under the absolute pressure of 0.05MPa to obtain the catalyst.

Example 4

i, placing the viscose in an activation furnace at 200cm³Heating to 850 ℃ at the speed of 5 ℃/min under the protection of nitrogen gas for/min, introducing water vapor containing hydrogen peroxide for activation for 1h, wherein the water vapor containing the hydrogen peroxide is obtained by heating and gasifying the hydrogen peroxide in the water vapor containing the hydrogen peroxide, the mass concentration of the hydrogen peroxide in the water vapor containing the hydrogen peroxide is 3%, and the volume ratio of nitrogen to the water vapor is 1: 0.5, stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to 25 ℃ under the protection of nitrogen to obtain the activated carbon fiber;

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of 0.6: 0.15: 10, stirring the mixture for 30min at 42 ℃ at a rotating speed of 250r/min, and then performing ultrasonic treatment for 20min under the conditions that the ultrasonic frequency is 28kHz and the ultrasonic power is 400W to obtain an acid treatment solution; soaking the activated carbon fiber in acid treatment liquid at 42 ℃ for 5h, then performing microwave treatment for 5min under the conditions that the temperature is 42 ℃ and the microwave power is 400W, taking out the activated carbon fiber to obtain the microwave-treated activated carbon fiber, washing the activated carbon fiber to be neutral by using deionized water, and drying the activated carbon fiber at 75 ℃ for 3h to obtain a modified product;

The antibacterial agent is a carboxylic acid halamine compound.

Example 5

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of 0.6: 0.15: 10, stirring the mixture for 30min at 42 ℃ at a rotating speed of 250r/min, and then performing ultrasonic treatment for 20min under the conditions that the ultrasonic frequency is 28kHz and the ultrasonic power is 400W to obtain an acid treatment solution; soaking the activated carbon fiber in an acid treatment solution at 42 ℃ for 5h, then performing microwave treatment for 5min at 42 ℃ under the condition that the microwave power is 400W, taking out the activated carbon fiber to obtain microwave-treated activated carbon fiber, and washing the activated carbon fiber to be neutral by using deionized water to obtain acid-treated activated carbon fiber; according to the following steps of 4: 100, mixing phosphomolybdic heteropoly acid ionic liquid and absolute ethyl alcohol, stirring for 2 hours at 25 ℃ and 100r/min to obtain an impregnation liquid, placing the activated carbon fiber subjected to acid treatment into the impregnation liquid with the mass 10 times that of the activated carbon fiber subjected to acid treatment, soaking for 3 hours at 25 ℃, taking out the impregnated activated carbon fiber to obtain the impregnated activated carbon fiber, washing the impregnated activated carbon fiber with deionized water for 2 times, wherein the mass-to-volume ratio of the deionized water used for washing the impregnated activated carbon fiber and each time is 1: 15(g/mL), and drying at 75 ℃ for 3h to obtain a modified product;

The antibacterial agent is a carboxylic acid halamine compound.

according to the formula 3: 1, bromopropane and N-methylimidazole are mixed, the mixture is reacted for 24 hours at 70 ℃ under the condition of 100r/min, the mixture is cooled for 12 hours at 0 ℃, the filtrate is filtered, the reactant A is obtained after the filtrate is removed, ethyl acetate is used for washing the reactant A, the mass of the ethyl acetate is 1.5 times of that of the reactant A, and finally the mixture is subjected to rotary evaporation for 1 hour at 70 ℃ under the condition of 0.08MPa of absolute pressure, so that brominated ionic liquid is obtained;

II, mixing phosphotungstic acid and deionized water, stirring for 2 hours at 25 ℃ and 100r/min, adding the brominated ionic liquid, keeping the temperature and the rotating speed unchanged, and continuing stirring for 2 hours, wherein the mass ratio of the phosphotungstic acid to the deionized water to the brominated ionic liquid is 0.06: 0.03: 100, carrying out suction filtration, removing filtrate to obtain a reactant B, washing with ethanol, wherein the mass of the ethanol is 1.5 times of that of the reactant B, and finally drying for 3 hours at 50 ℃ under the absolute pressure of 0.08MPa to obtain the catalyst.

Example 6

i, placing the viscose in an activation furnace at 200cm³Under the protection of nitrogen, heating to 850 ℃ at the speed of 5 ℃/min, and introducing water vapor containing hydrogen peroxide for activation for 1h, wherein the water vapor containing the hydrogen peroxide is obtained by heating and gasifying the hydrogen peroxide in the water vapor containing the hydrogen peroxide, the mass concentration of the hydrogen peroxide in the water vapor containing the hydrogen peroxide is 3%, and the volume ratio of nitrogen to the water vapor is 1: 0.5, stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to 25 ℃ under the protection of nitrogen to obtain the activated carbon fiber;

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of 0.6: 0.15: 10, stirring at the rotating speed of 250r/min for 30min at the temperature of 42 ℃, and then performing ultrasonic treatment for 20min under the conditions that the ultrasonic frequency is 28kHz and the ultrasonic power is 400W to obtain an acid treatment solution; soaking the activated carbon fiber in an acid treatment solution at 42 ℃ for 5h, then performing microwave treatment for 5min under the conditions of 42 ℃ and the microwave power of 400W, taking out to obtain the microwave-treated activated carbon fiber, and washing the activated carbon fiber to be neutral by using deionized water to obtain the acid-treated activated carbon fiber; according to the following steps of 4: 100, mixing phosphomolybdic heteropoly acid ionic liquid and absolute ethyl alcohol, stirring for 2 hours at 25 ℃ and 100r/min to obtain an impregnation liquid, placing the activated carbon fiber subjected to acid treatment into the impregnation liquid with the mass 10 times that of the activated carbon fiber subjected to acid treatment, soaking for 3 hours at 25 ℃, taking out the impregnated activated carbon fiber to obtain the impregnated activated carbon fiber, washing the impregnated activated carbon fiber with deionized water for 2 times, wherein the mass-to-volume ratio of the deionized water used for washing the impregnated activated carbon fiber and each time is 1: 15(g/mL), and drying at 75 ℃ for 3h to obtain a modified product;

The antibacterial agent is carboxymethyl chitosan zinc.

according to the formula 3: 1, mixing bromopropane and N-methylimidazole, reacting for 24 hours at 70 ℃ under the condition of 100r/min, cooling for 12 hours at 0 ℃, performing suction filtration, removing filtrate to obtain a reactant A, washing the reactant A with ethyl acetate, wherein the mass of the ethyl acetate is 1.5 times of that of the reactant A, and finally performing rotary evaporation for 1 hour at 70 ℃ under the condition of 0.08MPa of absolute pressure to obtain brominated ionic liquid;

II, mixing phosphotungstic heteropoly acid and deionized water, stirring for 2 hours at the temperature of 25 ℃ and at the speed of 100r/min, adding the brominated ionic liquid, keeping the temperature and the rotating speed unchanged, and continuously stirring for 2 hours, wherein the mass ratio of the phosphotungstic heteropoly acid to the deionized water to the brominated ionic liquid is 0.06: 0.03: 100, carrying out suction filtration, removing filtrate to obtain a reactant B, washing with ethanol, wherein the mass of the ethanol is 1.5 times of that of the reactant B, and finally drying for 3h at 50 ℃ under the absolute pressure of 0.08MPa to obtain the catalyst.

The preparation method of the carboxymethyl chitosan zinc comprises the following steps: according to the following steps of 3: 10, mixing carboxymethyl chitosan and deionized water, and stirring for 2 hours at 35 ℃ and 100r/min to obtain a carboxymethyl chitosan solution; adding zinc nitrate with the mass 3 times that of the carboxymethyl chitosan solution, keeping the temperature and the rotating speed unchanged, and continuously reacting for 1 hour to obtain a reaction solution; adding acetone with the volume 6 times of that of the reaction solution into the reaction solution, standing for 90min, centrifuging for 30min at 20 ℃ and 12000r/min, removing supernatant to obtain a product, washing the product with methanol with the mass 1.5 times of that of the product, and finally drying for 5h at 60 ℃ and under the absolute pressure of 0.08MPa to obtain the product.

Example 7

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of 0.6: 0.15: 10, stirring the mixture for 30min at 42 ℃ at a rotating speed of 250r/min, and then performing ultrasonic treatment for 20min under the conditions that the ultrasonic frequency is 28kHz and the ultrasonic power is 400W to obtain an acid treatment solution; soaking the activated carbon fiber in an acid treatment solution at 42 ℃ for 5h, then performing microwave treatment for 5min under the conditions of 42 ℃ and the microwave power of 400W, taking out to obtain the microwave-treated activated carbon fiber, and washing the activated carbon fiber to be neutral by using deionized water to obtain the acid-treated activated carbon fiber; according to the following steps of 4: 100, mixing phosphomolybdic heteropoly acid ionic liquid and absolute ethyl alcohol, stirring for 2 hours at 25 ℃ and 100r/min to obtain an impregnation liquid, placing the activated carbon fiber subjected to acid treatment into the impregnation liquid with the mass 10 times that of the activated carbon fiber subjected to acid treatment, soaking for 3 hours at 25 ℃, taking out the impregnated activated carbon fiber to obtain the impregnated activated carbon fiber, washing the impregnated activated carbon fiber with deionized water for 2 times, wherein the mass-to-volume ratio of the deionized water used for washing the impregnated activated carbon fiber and each time is 1: 15(g/mL), and drying at 75 ℃ for 3h to obtain a modified product;

The antibacterial agent is prepared from carboxylic acid halamine compound and carboxymethyl chitosan zinc according to the weight ratio of 1: 1, and mixing the components in a mass ratio of 1.

II, mixing phosphotungstic acid and deionized water, stirring for 2 hours at 25 ℃ and 100r/min, adding the brominated ionic liquid, keeping the temperature and the rotating speed unchanged, and continuing stirring for 2 hours, wherein the mass ratio of the phosphotungstic acid to the deionized water to the brominated ionic liquid is 0.06: 0.03: 100, carrying out suction filtration, removing filtrate to obtain a reactant B, washing with ethanol, wherein the mass of the ethanol is 1.5 times of that of the reactant B, and finally drying for 3h at 50 ℃ under the absolute pressure of 0.08MPa to obtain the catalyst.

according to the formula 1.2: 10, mixing cyanuric acid and deionized water, stirring for 30min at 25 ℃ and 100r/min to obtain a mixed solution A, adding sodium hydroxide accounting for 10% of the mixed solution A by mass, keeping the temperature and the rotating speed unchanged, continuously stirring for 30min to obtain a mixed solution B, adding chloroacetic acid accounting for 10% of the mixed solution B by mass, stirring and reacting for 10h at 25 and 100r/min, adjusting the pH value to 5 by using 20 wt% hydrochloric acid aqueous solution, performing suction filtration, and removing the filtrate to obtain a precursor;

Comparative example 1

Essentially the same as example 2, except that: essentially the same as example 2, except that: the preparation method of the modified activated carbon fiber comprises the following steps:

i, placing the viscose in an activation furnace at 200cm³/min, heating to 850 ℃ at a speed of 5 ℃/min under the protection of nitrogen, introducing water vapor containing hydrogen peroxide for activation for 1h, wherein the water vapor containing hydrogen peroxide is obtained by heating and gasifying the hydrogen peroxide in the water vapor containing hydrogen peroxide, the mass concentration of the hydrogen peroxide in the water vapor containing hydrogen peroxide is 3%, and the volume ratio of nitrogen to water vapor is 1: 0.5, stopping introducing the water vapor containing the hydrogen peroxide after the activation is finished, and cooling to 25 ℃ under the protection of nitrogen to obtain the activated carbon fiber;

mixing sodium dodecyl sulfate, silver nitrate and deionized water, wherein the mass ratio of the sodium dodecyl sulfate to the silver nitrate to the deionized water is 0.05: 0.5: 20, stirring for 1 hour at 30 ℃ and 100r/min to obtain a mixed solution, adding a product subjected to modification treatment and accounting for 3% of the mass of the mixed solution into the mixed solution, placing the mixed solution in a constant-temperature shaking box at 40 ℃ and 200r/min, continuing shaking for 130min, performing suction filtration, removing filtrate, washing the obtained product with deionized water for 2 times, wherein the mass-to-volume ratio of the product to the deionized water used for each washing is 1: 15(g/mL) and drying for 8h at 85 ℃ and under the absolute pressure of 0.08MPa to obtain the product.

Test example 1

Competitive adsorption experiments: methylene chloride is the most commonly used organic solvent, has a low boiling point and is non-flammable, and is widely used and highly volatile, so that methylene chloride exists in a large amount in the environment, and is widely concerned. Methylene chloride is listed as one of the twelve persistent organic pollutants that are preferentially controlled by the stockholm convention, and is also listed as an environmentally hazardous substance by the european community. In this test example, the adsorption capacity of the modified activated carbon fiber to organic substances in water was determined by testing the competitive adsorption amounts of the modified activated carbon fiber of the present invention and the activated carbon fiber in the control group to water and dichloromethane. 400mL of water and 40mL of dichloromethane are placed in a 1000mL beaker, the mouth of the beaker is sealed by a preservative film, a modified activated carbon fiber circular slice with the diameter of 10mm is respectively taken and suspended in the beaker, the beaker is placed in a thermostatic water bath at 55 ℃, the beaker is taken out after 1h, the amount of the water and the dichloromethane absorbed by the modified activated carbon fiber is measured according to the experimental method in section 1.3 of the article of the journal of Lixiangyan, namely dichloromethane absorption and recovery of secondarily activated carbon fiber, and the specific test result is shown in Table 1.

Table 1: competitive adsorption capacity of modified activated carbon fiber to water and dichloromethane

Sample(s)	Amount of adsorbed methylene chloride g/g	Adsorbed water amount g/g
			Example 2	0.203	0.91
Example 3	0.235	0.78
			Example 4	0.261	0.69
Example 5	0.301	0.59
			Example 6	0.297	0.57
Example 7	0.321	0.52
			Control group	0.035	2.45

According to the test results, the activated carbon fiber is modified by the method of treating acid in cooperation with ammonium ceric nitrate in the example 3, the adsorption capacity of the activated carbon fiber to dichloromethane is higher than that of the activated carbon fiber in the example 2, and the adsorption capacity of the activated carbon fiber to water is lower than that of the activated carbon fiber in the example 2; in example 4, under the action of microwave radiation, the activated carbon fiber is modified by a treatment method of acid in cooperation with ceric ammonium nitrate, so that compared with example 3, the adsorption amount of dichloromethane is obviously increased, and the water adsorption amount is reduced; and in the embodiment 5, the activated carbon fiber is modified by adopting the ionic liquid, so that the adsorption capacity of dichloromethane is further improved, and the water adsorption capacity is reduced. The test result shows that the modified activated carbon fiber has stronger adsorption capacity to organic pollutants such as dichloromethane, and simultaneously does not influence the filtration capacity of water.

Test example 2

And (3) testing the antibacterial performance: according to the antibacterial performance test method of the silver-loaded activated carbon fiber in section 1.2.5 in the published article of the pottery and literature, "structural characterization and antibacterial performance research of silver-loaded activated carbon fiber", the antibacterial performance of the modified activated carbon fiber of the invention is tested, and the specific test results are shown in table 2.

Table 2: bacteriostatic property test result table

Comparing the values in table 2, it can be seen that the bacteriostatic effect of example 7 (the antibacterial agent is formed by mixing carboxylic acid halamine compound and carboxymethyl chitosan zinc) is greater than that of examples 5-6 (the antibacterial agent is formed by one of carboxylic acid halamine compound and carboxymethyl chitosan zinc) and comparative example 1 (no antibacterial agent is added).

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. A comprehensive bacteria-control type healthy commercial water dispenser which is characterized by sequentially comprising a normal-temperature water unit and a heating unit,

the normal-temperature water unit comprises a ceramic filter element or an ultrafiltration membrane filter element, a first ultraviolet cavity and a second ultraviolet cavity are arranged at the position of the right side of the ceramic filter element or the ultrafiltration membrane filter element, a second flushing magnetic valve and a third flushing magnetic valve are connected at the position of the right side of the second ultraviolet cavity, an ACF filter element filtering tank is arranged at the position of the right side of the second flushing magnetic valve, and a third ultraviolet cavity is connected at the intersection of the ACF filter element filtering tank and the third flushing magnetic valve; the ACF filter element filter tank is an activated carbon fiber filter element;

the activated carbon fiber filter element is modified activated carbon fiber;

II, mixing nitric acid, ammonium ceric nitrate and absolute ethyl alcohol according to the weight ratio of (0.5-0.7): (0.1-0.2): 10, stirring at 40-50 ℃, and performing ultrasonic treatment for 10-35min after uniformly stirring to obtain an acid treatment solution; soaking the activated carbon fiber in acid treatment liquid at 40-50 ℃ for 3-8h, then placing the activated carbon fiber in microwave treatment at 40-50 ℃ under the condition that the microwave power is 200-400W for 3-10min, taking out the activated carbon fiber to obtain the activated carbon fiber subjected to microwave treatment, and washing the activated carbon fiber with water to be neutral to obtain the activated carbon fiber subjected to acid treatment; according to the formula (3-5): mixing the phosphomolybdic heteropoly acid ionic liquid and absolute ethyl alcohol according to the mass ratio of 100, uniformly stirring to obtain an impregnation liquid, putting the acid-treated activated carbon fiber into the impregnation liquid with the mass 9-15 times that of the acid-treated activated carbon fiber, soaking for 2-5h at the temperature of 20-30 ℃, taking out to obtain the impregnated activated carbon fiber, and washing and drying to obtain a modified product;

mixing sodium dodecyl sulfate, silver nitrate and water, wherein the mass ratio of the sodium dodecyl sulfate to the silver nitrate to the deionized water is (0.04-0.07): (0.3-0.8): (15-30), uniformly stirring to obtain a mixed solution, adding a modified product accounting for 3-6% of the mass of the mixed solution into the mixed solution, placing the mixed solution into a constant-temperature shaking box at 30-40 ℃ to shake for 5-20min, adding an antibacterial agent accounting for 1-3% of the mass of the mixed solution, continuing shaking for 120min, performing suction filtration, removing a filtrate, and performing washing and drying treatment to obtain the antibacterial agent;

the antibacterial agent comprises carboxylic acid halamine compound and/or carboxymethyl chitosan zinc;

and II, mixing phosphotungstic heteropoly acid and water, uniformly stirring, adding the brominated ionic liquid, and continuously stirring for 1-3h, wherein the mass ratio of the phosphotungstic heteropoly acid to the water to the brominated ionic liquid is (0.05-0.1): (0.02-0.05): 100, performing suction filtration, removing filtrate to obtain a reactant B, and washing and drying the reactant B to obtain the catalyst;

according to the formula 1: (3-6) mixing the precursor and 10-30 wt% of sodium hydroxide aqueous solution, stirring at 20-35 ℃ for 20-50min, adding 5-15 wt% of sodium hypochlorite solution which is 8-16 times of the mass of the precursor, continuously stirring at 20-35 ℃ for reaction for 1-3h, adjusting the pH value to 3-5, performing suction filtration, removing the filtrate, and drying to obtain the sodium hypochlorite aqueous solution;

2. The fully bacteria-controlled healthy commercial water dispenser of claim 1, wherein the heating unit comprises a filtering device and a heating device;

the filtering device is a reverse osmosis filtering device or a nanofiltration filtering device; the heating device is a heating tank and/or a thick film heating body; the reverse osmosis filtering device is an RO filtering tank.

3. The comprehensive bacteria-control type healthy commercial water dispenser as claimed in claim 1, characterized in that: the device comprises a body, wherein a switch valve is arranged at the position of a water inlet end of the body, the switch valve is connected with a normal-temperature water unit, a TOC detection module is arranged at the position of the inner side of the normal-temperature water unit, the normal-temperature water unit is connected with a normal-temperature water magnetic valve and a pressure switch, the normal-temperature water magnetic valve is connected with a water outlet tap, a fifth flushing magnetic valve is connected at the position of the bottom of the pressure switch and is connected with a booster pump, a water distribution pipe is arranged at the position between the normal-temperature water magnetic valve and the normal-temperature water unit, the water distribution pipe is connected with a fourth flushing magnetic valve, a heating unit is connected at the position of a junction of the fourth flushing magnetic valve and the booster pump, a waste water pipe is arranged at the position of the top surface of the heating unit, the waste water pipe is connected with a waste water valve, and a first water distribution pipe is arranged at the position between the normal-temperature water magnetic valve and the normal-temperature water unit, the position department of first water diversion pipe bottom is connected with first washing magnetic valve, first washing magnetic valve with the waste water valve is connected, the heating unit with it is connected to go out tap.

4. The comprehensive bacteria-control type healthy commercial water dispenser as claimed in claim 3, characterized in that: the heating unit includes that RO filters the jar, RO filters the jar and is provided with two exports, is located the top export connection waste pipe, another the export connection has the heating jar, the position department of heating jar left surface is connected with the through-flow pump, the position department of through-flow pump output is connected with the thick film heat-generating body, the other end of thick film heat-generating body with it is connected to go out the tap.

5. The comprehensive bacteria-control type healthy commercial water dispenser as claimed in claim 4, characterized in that: the RO filters the position department of jar end of intaking and is provided with detection solenoid valve c, RO filter the jar with position department between the waste water valve is provided with detection solenoid valve a, detection solenoid valve c with position department between the waste water valve is provided with detection solenoid valve b, detection solenoid valve b with detection solenoid valve a is the side by side relation, the waste water valve with first washing solenoid valve junction is provided with flow monitoring module, flow monitoring module's other end position department is provided with TDS detection module.