How can purified water equipment control the growth of microorganisms

After the purified water equipment is put into use, in order to produce stable and continuous water quality that meets the requirements of the standard, it is particularly important to effectively control the growth of microorganisms in its equipment
.

We can control it in the following ways: 1, regular disinfection with heating, that is, pasteurization, the united States Pharmacopoeia indicates that organic matter is killed above 60 ° C, and most of the treated organic matter will not proliferate
.

When the temperature is greater than 80 ° C will all kill, the disinfection time at this temperature is 1-2 hours, and the total cycle time including heating and cooling time may be 4-8 hours
.

The specific temperature and duration need to be determined according to the characteristics of a particular component or equipment, and the method of thermal disinfection (pasteurization) is usually used
in filters as well as distribution systems.

Thermal disinfection (pasteurization) of our water treatment equipment adopts plate heat exchanger in the front end of pretreatment, and the distribution system adopts a double-tube plate heat exchanger to heat the water temperature to 80 °C, so as to achieve the sterilization effect, thereby effectively preventing the growth of microorganisms
.

Figure 1 Purified Water Equipment 2, UV Lamp Irradiation Disinfection: UV lamp treatment is a very popular form
of control microorganisms and disinfection.

Water is exposed to UV lamps at a controlled flow rate, which inactivates the DNA of microorganisms and prevents their genes from replicating to reduce bacteria
.

In dispensing systems, when microorganisms are ineffective or not feasible in thermal, ultraviolet disinfection and sterilization
can be used.

It should be noted that the feed water entering the ultraviolet light must be free of suspended solids, because they can "mask" the bacteria to prevent the full contact of ultraviolet light, and its disinfection effect is only effective
when the ultraviolet light can directly contact microorganisms.

3, ozone disinfection method: ozone is a broad-spectrum fungicide, in a certain concentration can quickly kill can kill bacterial propagules and spores, viruses, fungi, etc.
, and destroy botulinum toxin
.

It does not have any toxic residue, does not form secondary pollution, and is known as "the cleanest oxidant and disinfectant"
.

In addition, the purification water equipment distribution system can also adopt the circulating pipeline mode to effectively prevent cross-contamination
.

At the same time, understanding and mastering the correct cleaning and maintenance methods of purified water equipment is also one
of the effective ways to control the growth of microorganisms.