1. Prevents buildup of tank bottom sludge.

2. Device for removing bottom sludge and/or floating sludge from circular settling basins

3. These substances are water-soluble and can therefore be contained in the effluent as well as trapped in the bottom sludge through its water content and/or solid adsorption.

4. These substances are water soluble and can therefore be contained in the effluent as well as trapped in the bottom sludge through its water content and/or solid adsorption.