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Activated carbon plays a role in purifying water, and it takes a certain amount of time regardless of physical adsorption or chemical adsorption. Therefore, the water purifier manufacturer should improve the design of the activated carbon filter or activated carbon filter to increase the contact time of water and activated carbon as much as possible. Contact time = length of the carbon column / flow rate of water in the carbon column, increase the length of the carbon column and the amount of activated carbon By reducing the flow rate of water, the contact time between water and activated carbon can be prolonged, and the water purification effect and effluent quality of activated carbon can be improved.
Household activated carbon water purifier
In the urban construction industry standard CJ3023-1993 "activated carbon water purifier", no specific data such as contact time or water flow rate is given, but 5.2.1 stipulates that the ratio of the effective height to the diameter of the filter column of the activated carbon filter is 2~ 6 is appropriate, in fact, it is also to increase the height of the carbon column, extend the contact time of water and activated carbon, and prevent water from penetrating without contact with carbon. Some water purifiers use a multi-stage activated carbon filter, which is also the role. In short, the longer the contact time of activated carbon with water, the better the adsorption effect.
Large activated carbon water quality processor
In the mechanical industry standard JB/T2932-1999 "Technical Conditions for Water Treatment Equipment", the flow rate of water in the activated carbon filter should be ≤20m/h for the purpose of removing free chlorine, and the effluent water quality is residual chlorine<0.1mg/L. For the purpose of removing organic matter, the flow rate of water in the activated carbon filter should be ≤10m/h, and the effluent water quality is CODMn<2mgO2/L. In the pretreatment of large reverse osmosis unit, the residual chlorine and organic matter should be removed, and the flow rate is 10m/h. If the height of the activated carbon filter layer is 1m, the contact time between water and activated carbon is 0.1h, that is, 6 minutes.
15 lights, 30 lights, and 60 lights refer to the number of LED components welded per meter length of the LED strip. Generally speaking, the 1210 specification strip has 60 LEDs per meter, and the 5050 specification strip has 30 LEDs per meter. Special There are 60 LEDs per meter. The price of LED strips with different LED quantities is different, which is also an important factor in distinguishing the price of LED strips.
Color temperature
It refers to heating a standard black body. When the temperature rises to a certain level, the color starts to change from dark red-light red-orange-white-blue. When the color of a certain light source is the same as that of the black body, we call the absolute temperature of the black body at that time Is the color temperature of the light source.
Generally speaking, color temperature is not used as an indicator for evaluating LED strips, but many foreign customers will make a special requirement due to the use environment.
The color temperature of the light source is different, and the light color is also different:
The color temperature is below 3300K, and the light color is reddish to give a warm feeling; it has a stable atmosphere and a warm feeling. It is commonly known as warm color temperature.
The color temperature is in the middle of 3000-6000K, and people have no obvious visual psychological effect under this color, and there is a refreshing feeling; therefore, it is called "neutral" color temperature
The color temperature exceeds 6000K, and the light color is bluish, giving people a cool feeling, commonly known as cool color temperature.
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