What standards does the pig farm implement for water quality?

In order to ensure the safety of water quality, make the water quality meet the sanitary requirements, and ensure the safety of pig drinking water and pig farm water, the following purification measures must be taken for pig farm water.

1. Precipitation

The surface water often contains suspended solids and colloidal substances such as sediment, which makes the water turbid. When the water flow slows down or stops, the large suspended substances in the water can gradually sink due to gravity, so that the water can be preliminarily clarified. However, most of the tiny colloidal particles suspended in water have negative charges, and colloidal particles repel each other, so they cannot be condensed into larger particles, so they can be suspended for a long time without precipitation. At this time, water treatment equipment is needed to solve suspended solids and colloidal substances such as sediment.

2. Filtering

Filtration is to purify drinking water by passing water through the filter. The principle of filtering purified water is as follows: first, the blocking effect. The suspended solids in the water that are larger than the pores of the filter material cannot be blocked through the filter layer. The other is sedimentation and adsorption. Objects in the water smaller than the sand gap, such as bacteria and colloidal particles, can not be blocked by the filter layer, but can be deposited on the surface of the filter material when they pass through the filter layer. The filter material surface can form a colloidal biofilm due to the growth of some non pathogenic bacteria. This membrane has adsorption power, which can adsorb micro particles and pathogens in water. Through filtration, more than 80% of bacteria and about 99% of suspended solids, schistosoma cercariae and amoeba cysts can be removed.

3. Disinfection

In order to prevent the waterborne transmission of infectious diseases and ensure the safety of large-scale pig water, the water needs to be disinfected: the commonly used disinfection methods include physical disinfection and chemical disinfection. Physical disinfection methods include boiling disinfection, ultraviolet disinfection, ultrasonic disinfection, etc. Since centralized water supply is mostly used in pig industry, and because of large water consumption in production, such technologies cannot be used for water disinfection in pig farms. Therefore, more chemical methods or disinfection equipment are used to disinfect water in pig farms.