A table of comparison between 活性炭 and B3D-G2 for wastewater treatment:

As you can see, B3D-G2 is a more efficient and durable material for wastewater treatment than active carbon. It is also more expensive, but it is recyclable and has a low environmental impact.

Here are some additional details about each material:

• 活性炭 is a material that is made by activating charcoal. It is a porous material with a high surface area, which makes it good for adsorption and filtration. Active carbon is also relatively inexpensive, making it a popular choice for wastewater treatment. However, it is not very durable and can be easily damaged by chemicals.
• B3D-G2 is a newer material that is made by doping graphene with boron and then coating it with 2D layers. Boron doping increases the conductivity of graphene, while the 2D layers improve its durability. This makes B3D-G2 a more efficient and durable material for wastewater treatment than active carbon. However, it is also more expensive and not as widely available.

Overall, B3D-G2 is a more promising material for wastewater treatment than 活性炭. It is more efficient, durable, and recyclable, and it has a lower environmental impact. However, it is also more expensive and not as widely available.