Biochemical cotton and filter cotton have both similarities and differences. Filter cotton generally refers to white cotton fiber filter material. The thickness is generally between 3mm and 50mm. It is mainly used to filter dust from the air. fine suspended particles such as paint, etc., while biocotton is a block filter material made of imported thick silk materials that are irregularly twisted and can also be used as a filter material. But biochemical cotton is mainly used as a bacteria house, where nitrifying bacteria can have a bed. With nitrifying bacteria, the ammonia in the aquarium water can be broken down by the bacteria so that the fish do not get sick and die. So there are still differences between biochemical cotton and filter cotton, but they also have things in common.In fact, there won't be much difference except that the gaps in the filter cotton are smaller. The gaps of biochemical cotton are relatively large, because biochemical cotton is used for the reproduction of nitrifying bacteria and other beneficial bacteria, so the gaps should be relatively large. Filter cotton is used to filter impurities, so the gaps are smaller. Actually: if it's not too hard, both can be used in common, and there's basically not much difference. Unless you really want to build a perfect filtering system, you will deliberately single them out.
Although there are power plants that use seawater
The supply water for power plants often comes from surface water, groundwater, coastal areas and areas lacking fresh water. Sea water is the source of water supplyment. This water needs to be treated by high purity water equipment such as precipitation, filtration, desalination and degassing. Seawater is the supply water source and must be treated by seawater desalination equipment before it can enter the water circulation. power plant system.
In the water vapor circulation system of thermal power plants, there are strict water quality requirements for water used as the working fluid and cooling fluid of the thermal system . For example, the high pressure boiler feed water is not used. requires only low hardness, minimal dissolved oxygen, solids and organic matter content. Water content that does not meet water supply standards will make it impossible for the power plant equipment to operate safely and economically. One system, one multiple bed, onemixed bed ion exchange system, ultrapure water treatment equipment, etc. are necessary to manage ultra-pure water treatment equipment in thermal power plants. To this end, quality indicators for different types of water used in thermal power plants have been developed.