Water Purification
Guangzhou Longkon Eco-Tech Limited

Well water disinfection

Update Time:2015-02-07 13:52:36

 井水消毒

Well water treatment is mainly for the sake of removing iron and manganese and ammonia nitrogen, harmful material such as sand, scale, and make the processed water quality meet the national drinking water standards.Groundwater, well water treatment at present is mainly in addition to iron and manganese, because in our country, high groundwater Fe Mn content is quite common, far more than drinking water standard (Fe acuities were 0.3 mg/l, Mn 1 mg/l) or less, in addition to iron and manganese mainly adopts aeration filter, filter filter medium usually use quartz sand and manganese sand, later after precision filter to filter, activated carbon, and after treatment, water quality can basically meet the national drinking water standards.In addition to the above to remove excess water minerals, often on well water turbidity purification, the physical filtering is better, primary filter can be used sand cylinder, intermediate filter can choose PP cotton core and ceramic core, deeper level of filter can choose hollow ultrafiltration, precision can reach 0.01 UM, can filter out bacteria and viruses.
Uv sterilizer
Introduction: uv sterilizer is using appropriate wavelength of ultraviolet light to destroy microbial DNA (deoxyribonucleic acid) in the body's cells or RNA (ribonucleic acid), the molecular structure of the growing cell death and (or) regenerative cell death, to achieve the effect of sterilization.Ultraviolet disinfection technology is based on modern epidemic prevention science, medicine and light dynamics, on the basis of using the special design of high efficiency, high strength and long service life of UVC ultraviolet light wavelengths of the water, water to all sorts of bacteria, viruses, parasites, algae and other pathogens directly kill, achieve the purpose of disinfection.
Ultraviolet disinfection is a physical method, it does not increase any material into the water, no side effects, this is the place where it is better than that of chlorination, it is usually associated with other material used, common joint process include UV + H2O2, UV, H2O2 + O3, UV + TiO2, in this way, the disinfection effect will be better.

 

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The sterilization effect:
Sterilization effect is determined by the microbial acceptable exposure dose, at the same time, also the uv output energy, and the type of lamp, light intensity and the use of time, as the light aging, it will lose the strength of the 30% to 50%.Ultraviolet irradiation dose refers to reach a certain rate of bacteria inactivated, need the quantity of a particular wavelength uv: dose (J/m2) = (s) by UVC irradiation time (W/m2) dose intensity, the greater the disinfection efficiency is higher, due to the equipment size requirements, general irradiation time are only a few seconds, as a result, tubes of UVC output intensity is measured ultraviolet onclick = "g (' disinfection equipment ');"> disinfection equipment performance of the main parameters.In urban wastewater disinfection, general average exposure dose in more than 300 J/m2.Lower than this value, may appear light resurrection phenomenon, namely bacteria cannot be completely kill, when the issue from the channel after exposure to visible light, resurrected, reduces the sterilization effect.Bactericidal efficiency is higher, the required the greater the exposure dose.The microbial accept enough uv exposure dose is the main factor light transmittance (254 nm), when the UVC output intensity and irradiation time, the changes of light transmittance will cause microbiological dose of actual change.
Sterilizer:
(1) ultraviolet air disinfector: manufactured low ozone ultraviolet germicidal lamp, can be used for people under the condition of indoor air disinfection.
(2) the surface of uv sterilizer: adopt high strength low ozone ultraviolet germicidal lamp manufacturing, so that it can achieve satisfactory disinfection effect in an instant.
Ultraviolet disinfection tank: adopt high ozone high intensity ultraviolet germicidal lamp manufacturing, using uv and ozone sterilization action on one hand, on the other hand, the part of the ultraviolet light is less than to make use of ozone disinfection.

The specification

紫外线消毒器参数更新.png

紫外线消毒器参数更新.png

The scope and conditions
1. Uv rays can kill all kinds of microorganisms, including bacteria breeding, buds, mycobacterium, viruses, fungi, mycoplasma and rickettsial, all who are above the surface of the microbial contamination, water and air are used ultraviolet disinfection.
2. Ultraviolet irradiation energy is low, penetration is weak, only can kill microorganisms, direct irradiate so disinfection disinfection parts must be fully exposed to ultraviolet light.
3. Use ultraviolet disinfection the rough surface such as paper, cloth, to extend irradiation time, and the two sides should be under irradiation.
4. Ultraviolet disinfection is the most suitable temperature range 20-40 ℃, the temperature too high too low will affect disinfection effect, sterilization time can be appropriately extended, for air sterilization, disinfection environment relative humidity below 80% for good, otherwise should be appropriately extended exposure time.
5. Use ultraviolet light to kill is protection of microbial organic matter, should increase the exposure dose.Air and water suspended particles can also affect disinfection effect.

 


Chlorine dioxide generator for underground water disinfection 

Brief introduction:
As a new kind of oxidant and disinfectant, chlorine dioxide, with its high efficiency, broad spectrum and no residue, no by-products of disinfection capability and decolorization, deodorization, in addition to the peculiar smell such as strong oxidation ability has become a leader in the field of water treatment.

And ultraviolet radiation, ozone, than traditional disinfectant sodium hypochlorite and liquid chlorine, chlorine dioxide has a unique advantage, it become the first choice of the personage inside course of study.
(1) system Of chlorine dioxide reactor with chemical method, the feeder system, response system, security system, automatic control system and absorb the additive composition.

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(2) classification
One kind of high purity chlorine dioxide disinfectant generator, another kind of composite disinfectant chlorine dioxide generator.As the name implies, pure chlorine dioxide disinfector generator products for chlorine dioxide, and composite disinfectant chlorine dioxide generator to generate chlorine dioxide and chlorine gas mixture.
(3) the reaction principle
A class of reaction principle:
5 naclo2 HCL + 4 = 4 clo2 nacl + 5 + 2 h 2 o
Naclo3 + H2O2 + clo2 - H2SO4 = 2 + 2 Na2SO4 + O2 + 2 h2o
2 naclo2 clo2 NaCLO HCL + 2 = 2 + 3 + nacl + H2O
The second class reaction principle:
NaCLO3 + 2
HCL = 1/2 cl2 CLO2 + + NaCL + H2O
High purity hydrate-sulfuric acid reaction principle:
2 naclo3 + H2O2 + clo2 - H2SO4 - > 2 + Na2SO4 + O2 + 2 h2o

(4) the use of raw materials
Systems using ingredients: sodium chlorite, industry firsts, content of 85% or higher) industrial synthesis of hydrochloric acid (31% concentration or greater)
Or sulfuric acid (industrial grade one, the concentration of 83.0 + / - 2.0%) sodium chlorate (industry firsts, content of 99% or higher) hydrogen peroxide (industrial products, content of 27.5% or higher) 10% sodium hypochlorite
Second use of the material: sodium chlorate (industrial grade one, content of 99% or higher) industrial synthesis of hydrochloric acid (31% concentration or greater)
(5) process
2 naclo3 HCL + 4 = 2 clo2 + nacl Cl2 + 2 + 2 h2o
Quantitative injection using hydrochloric acid and sodium chlorate in the reaction kettle, reaction kettle, in the case of heating issued by biochemical reactions to generate chlorine dioxide and chlorine, again through the water ejector suction added to water disinfection.
(6) specifications classification
Of the specifications of the chlorine dioxide disinfector generator according to equipment production of chlorine dioxide (g/h) identified.Of the specifications of the composite disinfectant chlorine dioxide generator according to equipment available chlorine production (g/h) identified.
(7) performance characteristics
A, can be used in A negative pressure aeration technology, positive pressure injection technology to produce chlorine dioxide disinfectant
B, equipment at the core of the reactor with high-temperature corrosion resistance of the composite materials produced, equipment service life is long.Reactor design for multi-stage heating tower structure classification, main reactor temperature as high as 70 ℃, that ensures the CLO2 high levels, and improve the conversion rate of the materials.
C, automatic control system has under voltage, lack of material, over temperature, automatic alarm and protection functions such as water shortage (automatic shutdown)
D, raw material conveying by Germany, Japan, the United States, Italy and other imports of metering pump, stable and reliable running.
E, equipment automatic control system of powerful, dynamic LED display can display the various technological parameters of the equipment operation (temperature, pressure, liquid level, dosing quantity and residual chlorine dioxide water and water flow, etc.), and can be manual and automatic mode switch to each other.More than acceptable standard 4-20 ma out
Chlorine dioxide inflow discharge signal, realizes the on-line closed loop control of residual chlorine dioxide inflow discharge.At the same time can also through the communication interface to realize remote communication function.

(8) application scope
1, all kinds of situations of life, drinking, tap water disinfection;
2, restaurant, hotel, family, the sanitation of disinfection tableware disinfection and air environment.
3, food, beverage factory, fermentation industry equipment, pipelines, containers of final sterilization disinfection.
4, dairy, slaughterhouse sterilization processing of the pipe, facilities and environment;
5, hospital wastewater disinfection treatment;
6, swimming pool, industrial circulating water, bath water disinfection;
7, hospitals, public health, clinical equipment disinfection, sterilization, deodorant, mouldproof processing;
8, family, hotels, restaurants, fruit and vegetables, fish and other food preservation and finally elution disinfection;
9, configuration of various oral disinfectant, deodorant and wound cleaning fluid, etc.
10, wastewater reuse in the sterilization and deodorization;
11, flour and all kinds of food bleach;
Bleaching agents, paper making, printing and dyeing industry;
13, plating broken cyanide bearing cyanide wastewater treatment, decoloring treatment of printing and dyeing wastewater, industrial town hospital sterilization process to remove algae in water.
The technical requirements
1) the chlorine dioxide disinfectant generator
Generator of chlorine dioxide production shall be not less than rating;
Generator, disinfectant solution in the chlorine dioxide (in active chlorine) quality percentage not less than 95% of total available chlorine;
The main raw material such as sodium chlorite conversion rate of no less than 80%.
2) composite disinfectant chlorine dioxide generator
Generator available chlorine production should not under rating;
Generator, disinfectant solution in the chlorine dioxide (in active chlorine) quality percentage not less than 55% of total available chlorine;
Main raw materials such as sodium chlorate and sodium chlorite conversion rate of no less than 60%.
3) under normal conditions, the service life of the generator is not less than five years, average trouble-free working time not less than 8000 h.
4) generator under normal conditions should have good sealing, generator in indoor use, good ventilation, the environment temperature by 5 ℃ to 40 ℃ advisable), chlorine concentration in indoor environment should comply with the provisions of the HJ/T 30, the maximum allowable concentration should be less than 1 mg/m.
5) when used for drinking water, the water after disinfection chlorous acid root, chlorate raw materials such as the amount of residue should be no greater than 0.7 mg/L.