GEA 2H TUBEdek® lamella settlers: more efficient settling due to equidistant chevron-shaped tubes

The outstanding performance of GEA 2H TUBEdek® lamella settlers has been demonstrated in more than 1000 wastewater or potable-water plants worldwide – some of them serving populations of more than 500,000 with potable water.

Unlike other tube-settler products, the GEA 2H TUBEdek® lamella settler combines equidistant settling with chevron-shaped channels – product properties that enable highly efficient effects.

For example: At a paper mill in Brazil, several settling tanks for biosolids are operated in parallel. All process lines are operated under virtually identical conditions. The only difference is that one tank operates with equidistant tubes from GEA, whereas the other tanks are equipped with triangular multidistant channels. In the triangular settler, some of the channels were totally blocked because the sludge was stuck in the lower triangular section, resulting in clogging of entire channels or in heavy sludge deposit in the acute angles of the triangular channels. In contrast, the chevron shape allows the sludge to travel in the direction of the center line of the channel, where it slides downward and exits the settler toward the bottom.