Beijing secondary water supply inspection property secondary water supply inspection

  Secondary water supply refers to the form that units or individuals store and pressurize the water supply of urban public water supply or self built facilities, and then supply it to users or their own use through pipelines
Therefore, secondary water supply is the way of high-rise water supply
Secondary water supply equipment is usually divided into water tank frequency conversion equipment and non negative pressure frequency conversion equipment
Secondary water supply is that the property requires all residential areas and office buildings to carry out secondary water supply quality testing, and provide relevant departments with secondary water supply testing reports
There are 21 testing items: 17 physical and chemical indicators, including nitrate, nitrite, chroma, turbidity, odor and taste, visible to the naked eye, pH value, iron, manganese, copper, lead, chloride, sulfate, total hardness, oxygen consumption, volatile phenols There are 4 indicators of ammonia nitrogen microorganism: including total coliform, heat-resistant coliform, Escherichia coli and total number of colonies
Generally, Tongzhou requires 31-33 items of secondary water supply testing, and 21 or 22 items in other areas
Quantity: Normally, there are several sets of non negative pressure equipment or several sets of water tank