①、活性炭过滤器有什么作用？

活性炭过滤器的作用主要是去除大分子有机物、铁氧化物、余氯。有机物、余氯、铁氧化物易使离子交换树脂中毒，而余氯、阳离子表面活性剂等不但会使树脂中毒，还会破坏膜结构，使反渗透膜失效。

②、为什么要对活性炭过滤器进行维护

活性炭过滤器是利用活性炭所具有的丰富的毛细孔对水中的大分子有机物、余氯、铁氧化物等胶体物进行吸附过滤，这种吸附是不可逆的，即活性炭有一定的饱和吸附容量，一旦吸附饱和后，活性炭就失去吸附性能，无法用反冲洗的方法冲去污染物。另外，活性炭吸附有机物后，为细菌提供了丰富的营养，造成细菌在活性炭过滤器内的大量繁殖，水中的微生物含量经活性炭过滤后反而升高。

③、活性炭过滤器如何维护？

在活性炭吸附饱和之前，定期进行反冲洗，以冲出活性炭表面的大量菌团及悬浮固体物。活性炭吸附饱和后，应马上更换新的活性炭，否则会造成反渗透膜不可弥补的损伤。

① What is the function of activated carbon filter?

The main function of activated carbon filter is to remove macromolecular organic matter, iron oxide and residual chlorine. Organic matter, residual chlorine and iron oxide are easy to cause ion exchange resin poisoning, while residual chlorine and cationic surfactant will not only poison the resin, but also destroy the membrane structure and make the reverse osmosis membrane invalid.

② Why should the activated carbon filter be maintained

Activated carbon filter uses the rich pores of activated carbon to adsorb and filter macromolecular organic matter, residual chlorine, iron oxide and other colloidal substances in water. The adsorption is irreversible, that is, the activated carbon has a certain saturated adsorption capacity. Once the adsorption is saturated, the active carbon will lose its adsorption performance and cannot be washed away by backwashing. In addition, the adsorption of organic matter by activated carbon provides rich nutrition for bacteria, resulting in a large number of bacteria in the activated carbon filter, and the microbial content in the water increases after activated carbon filtration.

③ How to maintain the activated carbon filter?

Before the adsorption of activated carbon is saturated, backwashing is carried out regularly to flush out a large number of bacteria and suspended solids on the surface of activated carbon. After the activated carbon is saturated, it should be replaced with a new one immediately, otherwise it will cause irreparable damage to the reverse osmosis membrane.