How to make a simple water circulation filter in a courtyard fish pond?

Put a submersible pump in the pool, put three sorting boxes in the water, put cotton filters on the top and punch holes on the bottom.

The second layer is to punch holes in the bottom of the rattan cotton biochemical ball, and the bottom layer can be covered with a fungus room and the like, and water holes can be made.

Submersible pump pumps water to the sorting box layer by layer and then returns to the fish pond.

In addition, if it is too troublesome, the whole set of equipment can be purchased online.

：

With the development of economy and technology, mechanical automation has made rapid development. We have noticed that the biggest cause of environmental load is the cleaning project of manufacturing industry. In the cleaning engineering of manufacturing industry, in order to remove grease and dust on the surface of parts, a large number of solvents and detergents are usually used for cleaning. However, the use of solvents and detergents will inevitably increase the discharge of water, thus greatly increasing the environmental load.

References:

Baidu Encyclopedia-Filter Cycle System