In the daily chemical industry, daily chemical refers to the chemicals used in daily life (technological chemicals), including skincare products, hair conditionersShampoo, shower gel, cosmetics, etc.
Taking cosmetics processing as an example, in order to achieve the requirements of high stability and good usability of cosmetics, the quality of production water used in the cosmetics processing process will directly affect the quality of the cosmetics production process and the final product. Let's take a look togetherIntroduction to Ultra Pure Water Equipment in the Daily Chemical Industry.
The use of daily chemical industryUltra pure water qualityThe requirement is to meet the hygiene standards for drinking water (GB5749-2006). Depending on the different water quality requirements for cosmetic production water, the daily chemical industry adoptsWater treatment processes can be roughly divided into: deionized water technology, reverse osmosis water treatment technology, mixed bed exchange process, EDI ultra pure water technology, etc.
Deionized water technology:After treatment, the conductivity of the deionized water obtained from cation anion exchange resin can be reduced to below 10us/cm.
(Secondary) Reverse osmosis technology:Raw water (tap water or groundwater) → multi-media filter → activated carbon filter → water softener → intermediate water tank → low-pressure pump → precision filter → primary reverse osmosis → pH adjustment → secondary reverse osmosis → pure water tank → pure water pump → microporous filter → water user;
Mixed bed exchange process:Pre treatment of water treatment process (i.e. sand carbon filter+precision filter)+first stage reverse osmosis+mixed bed process. Reverse osmosis technology can treat water containing 90% of ions that have been added, and the effluent conductivity is below 1 US/cm.
Ultra pure water index in the daily chemical industryThe standard is roughly as follows: pH value: between 5.0 and 7.5; The conductivity of water at 20 ℃ is 1-10 μ s/cm, and the resistivity is 0.1-1 Ω· cm; it is colorless and odorless ultrapure water;