Electrolyzed-oxidizing water also named high potential oxidizing ion water,strong acidic water , acidic potential water,acidic electrolyzed water,oxidizing potential water possesses high OR, low PH value,low concentrated ACC,HOCL and active oxygen as the function of rapidly disinfecting.

Here is no harm residue after disinfecting and sterilizing with the physical disinfect as main and the chemical one as minor.EOW invented about 1980 in Japan as the disinfectant for the MREA.Through the many years’ research and practice,people has the common view of advantage alike extensiveness, high-effectiveness,non-toxin and friendly-environment,and advantage alike in the medical domain of infecting hands,endoscope,hemodialysis device,atmosphere and wound.EOW generator entering China in 1990 is accepted by Chinese and received many ideal effect on endoscope,operation room,apparatus and instrument in hospital.EOW as the extensive,high-effective,non-toxin and friendly-environmental approach is accepted into the by health ministry in 2002.Application of OEW in the hospital could be developed into other circles as basis.This article pointed in the course of industry production discusses the cooling disinfect way and milk pipe and container,and pose the new disinfect way-EOW disinfect.it can dramatically lower the cost besides the advantage of cleaning in place.

1.EOW mechanism of producing and killing bacteria

1.1 production

EOW disinfect liquid is generated from the running water(purifying and filtrating)in electrolyzed cell with both filtrate membrane,platinum titanium alloy electrode and a proportion of NACL(0.05%)by the way of electrolysis.Acidic water from positive pole and alkaline water from negative pole.The electrolyzed membrane separates two parts in cell,and make salt water is electrolyzed H+ and OH-.With more steps, here HCLO and CLO2 in positive pole becomes EOW. 1.2property

EOW is transparent,non-colored and non-irritated liquid,whose PH value is 2.3-2.7,and whose concentration of effective chlorine is 50mg/l,and whose ORP is +1100mv.It gradually reduce original water in the air,sunny ray and organic compound condition.

Alkaline water combining with acidic water reduce the water ,alkaline water PH value 11.2-11.5,ORP-870--840mv.

1.3mechanism

In physique including redox potential theory,electronic movement theory and electric conductivity theory.

Before 1994,people overwhelmingly accept the BECKING physique theory in 1960:EOW(PH value below 2.7,

ORP over +1100mv)overpass the living range,and change the membrane potential of microbe cell leading to destroy the cell metabolism and to strengthen cell membrane permeability.here is the killing microbe theory.

In chemistry,Japanese scientist pose the main component in EOW:HCLO,hydrogen peroxide and OH base.It is interesting that these components are same with active oxygen which has the disinfecting function.In more scientific researches, effective chlorine theory in 1998 is proved that effective chlorine in EOW is the main element to kill the pathogen.

According to the generating environment,microbe is alive in the PH value 4-9 and ORP value 400-900 mv.

EOW (PH value -2.3-2.7, ORP value +1000 mv)is over higher than microbe living condition.Because of the effective chlorine50mg/l in EOW,the affective of that is more effective and safe.

Under the mutual function in low PH value,high ORP and effective chlorine,the EOW destroy the microbe living surrounding and enhance the permeability to rapidly lead microbe die.

1.4disinfecting property

EOW has many properties alike spectrum sterilization and rapid disinfection.many researches abroad shows

EOW has the function spectrum sterilization,not only killing virus and microbe generation but also pathogens alike spores.disinfecting result in laboratory shows that EOW could kill MRSA,escherichia,pseudomonas aeruginosa and gonorrhea in 30 seconds,and HBsAg,HIV in 30 seconds,and candida albicans in 10 minutes, and spore of bacillus subtilis in 10-20 minutes.

1.5 safeness

Scientists have proved that EOW is the safe disinfectant through the acute oral toxicity test,skin irritation test , eyes irritation test,animal bone marrow cell micronucleus test and so on.it has no adverse reaction in drinking and contacting because of skin protection.

1.6 reserving way

EOW reduces original water facing with light,organic compound and air.it is 30 reserving days in closet temperature,4 days in open temperature,90 days in cooling and closet temperature.Had better reserve in non-metal reservoir.Over 40 degree temperature could lower the disinfect effect.dairy factory could be correspondent with requirement of EOW disinfect in factual condition.

2.discuss the application of EOW in dairy circle

2.1traditional CIP disinfect

The pipe and partial equipment are adopted by the cleaning system CIP disinfect way in dairy profession.

Here is 5 steps:(1)take water to clean the milk on the pipe and container.

(2)take NAOH(PH value 11)solution clean fat residue out

(3)take water wash alkaline water and substance

(4)nitric acid(PH value 2.0)diluted to 10g/l acidic water to remove protein and residue and disinfect the pipe and container|(5)sterile water wash the acidic water.after disinfecting by CIP way and before producing, high temperature steam keeps warm one hour to begin work. The effect of technology is satisfying.

2.2 EOW disinfect way

Design test need 3 steps to complete the disinfect by use of EOW disinfect way.

(1)take water to clean the milk on the pipe and container.

(2)take NAOH(PH value 11)solution clean fat residue out

(3)acidic water to remove protein and residue and disinfect the pipe and container.Because acidic water mixed with alkaline water reduce the water,acidic water disinfect and clean pipe and container,and no residue in the course of disinfect without sterile water cleaning to avoid from the second pollution.

2.3 the contrast between different disinfect scheme

From test,EOW washing pipe and container in 10 minutes.the number of bacteria in EOW is same with that in traditional way.

2.4the cost of two disinfects

Traditional way:one disinfect cycle time in 1 ton productive line per month about 3.5-5 hours, acid base material 660 yuan/time,each supply by 30% loss,coal 1500yuan/time and water 180 yuan/time.

The disinfect fee is 1878 yuan per day.56340 yuan per month.

EOW disinfect way:one disinfect cycle time in 1 ton productive line per month about 0.5-1 hours,NACL 33yuan/time, electricity depletion6.3KW 115 yuan/time,water 60 ton 100yuan/time.The total is 248 yuan/time.7440 yuan per month.

After calculation,EOW is 13.2% in compare with CIP disinfect.it has much advantage of economizing 50000 cost.

3.Conclusion

EOW disinfect has been added a new technology in dairy industry.it is safe,dependable and economical.In the practice of hospital application.EOW has the basis of theory and practice in the dairy industry.