This should be based on the quality of the activated carbon you use, and water quality indicators to determine the normal water treatment with activated carbon 1 year replacement. In fact, the specific replacement time of activated carbon is not specified, generally activated carbon loss of adsorption saturation can be thrown away, replaced by a new one. Simple test saturation: put the activated carbon into the water, look at the water there are a lot of small bubbles, if the amount of bubbles is small (compared with the new activated carbon), that saturation is full, need to be replaced or regenerated in order to make the sewage to reach the drainage of a certain body of water or reuse of the water quality requirements of its purification process. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, food and beverage and other fields, but also more and more into the daily life of ordinary people. In fact, the specific replacement time of activated carbon is not specified. Simple test saturation: put the activated carbon into the water, look at the water, there are a lot of small bubbles, coal activated carbon prices, large wholesale more favorable, if the amount of bubbles is small (compared with the new activated carbon), the saturation is full, need to be replaced or regeneration. My company sells high-quality coconut shell activated carbon retail price: 6 yuan / pound, and water quality indicators to determine the normal water treatment with activated carbon 1 year to replace this according to the quality of the activated carbon you use, the general loss of adsorption of activated carbon saturated after the loss of it can be thrown away, replaced by a new; activated carbon cycle, there are a lot of factors, first of all, look at the activated carbon you buy to deal with the water, or to deal with the exhaust, according to the frequency of use of the activated carbon The quality of the water is good or bad, or the amount of waste gas treatment, but also the quality of the activated carbon itself is good or bad, in general, the waste gas treatment should be replaced in three months or so, the water treatment for a year or so, the specific use of the cycle should also be based on the actual situation to be determined.