| 摘要 |
Plant for phosphate removal from wastewater in a continuous operation, comprises a substantially cylindrical stirred reactor, which is charged with calcium silicate hydrate (CSH) as a crystallization substrate and a sedimentation container, where the stirred reactor is divided into a resting zone, which is located in the upper part and a reaction zone which is located in the lower part. The stirred reactor further comprises a stirring apparatus and an inlet, both of which are disposed substantially centrally in the reaction zone. Plant for phosphate removal from wastewater in a continuous operation, comprises a substantially cylindrical stirred reactor, which is charged with calcium silicate hydrate (CSH) as a crystallization substrate and a sedimentation container, where the stirred reactor is divided into a resting zone, which is located in the upper part and a reaction zone which is located in the lower part. The stirred reactor further comprises a stirring apparatus and an inlet, both of which are disposed substantially centrally in the reaction zone. The outlet of the rest zone is arranged out and the stirred reactor is arranged upstream to the sedimentation container such that the outlet from the rest zone of the stirred reactor is connected as inlet in an average height of the sedimentation container. Independent claims are also included for: (1) eliminating phosphate from waste water, comprising (a) providing CSH as a crystallization substrate, (b) contacting wastewater with CSH in a ratio of 2:10 wt.% and maintaining the suspension with stirring, where the pH is maintained to at least 8, (c) separating CSH particles loaded with phosphate containing mineral phases by sedimentation, and (d) separating the purified waste water; and (2) a CSH particle loaded with phosphate comprising mineral phases produced by the above mentioned method. ACTIVITY : Fertilizer. No biological data given. MECHANISM OF ACTION : No biological data given. |
