Method and equipment for preparing citizen safe drinking water and safe domestic water fully physically

Abstract

The invention relates to water treatment technology, in particular to a method and equipment for preparing citizen safe drinking water and safe domestic water fully physically. In the method, pretreated raw water is introduced into a front-stage physical disinfection system for filtering; the water output by the fore physical disinfection system is conveyed to each household, and non-drinking safe domestic water is provided; and the non-drinking safe domestic water provided by a water distribution network is disinfected at any time by a rear-stage physical disinfection system, and the safe drinking water meeting national standard is output. The safe drinking water prepared by the method does not contain any chemical disinfection byproducts, and over 99.9 percent of pathogenic microorganisms can be filtered and killed; and other domestic water also does not contain any chemical disinfection byproducts, and over 99.9 percent of pathogenic microorganisms capable of entering human bodies through skin are filtered. The method and the equipment for preparing the domestic water can ensure that the health of citizens cannot be influenced by drinking and bathing.

Description

technical field [0001] The invention relates to water treatment technology, in particular to a method and equipment for the physical preparation of safe drinking water and safe domestic water for residents. Background technique [0002] my country's National Standards Committee and the Ministry of Health jointly issued the "Drinking Water Sanitation Standard" (GB5749-2006) in 2006, replacing the old national standard (GB5749-85) formulated in 1985. The new national standard came into effect on July 1, 2007. The specified indicators in the new national standard increased from 35 items in the 1985 national standard to 106 items, especially the microbial indicators increased from 2 to 6 items, and the organic compounds in the toxicological indicators increased from 5 items to 53 items. The newly added microbial indicators include microorganisms that are difficult to kill with general doses of chemical disinfectants (such as Giardia and Cryptosporidium); the newly added organic...

AI Technical Summary

Problems solved by technology

Technicians have tried to find other chemical disinfectants such as ozone and chlorine dioxide that can replace chlorine (see "Disinfection Alternatives for SafeDrinking Water", Ch.6, 7; by Edward A.Bryant et al., VAN NOSTRANDREINHOLD, New York , 1992), but later found that all chemical disinfectants have their own series of disinfection by-products, which cannot fully meet the requirements of safe drinking water preparation

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