Waste water treatment equipment

摘要

A sewage treatment apparatus comprises a first stage equipment for treating sewage feed to obtain a first effluent and a second stage equipment for treating the first effluent to obtain a second effluent. The second stage equipment comprises a mixer (VI) for mixing the first effluent and a flocculation agent to obtain the first effluent containing the flocculation agent and a flocculation-clarification equipment (VII) comprises a first flocculation reaction chamber (A), into which the first effluent containing the flocculation agent is entered and subjected to flocculation reaction to form a mixture of water and dreg; a first separation chamber (C), into which the mixture of water and dreg from the first flocculation reaction chamber (A) is entered and separated to obtain a first part of the second effluent and a first dreg; and a second separation chamber (D), into which part of the first dreg is entered and separated to obtain a second part of the second effluent and a second dreg.

主权项

1. A sewage treatment apparatus, comprising:
a primary stage for treating a sewage feed to obtain a first water effluent, and a secondary stage for treating the first water effluent to obtain a second water effluent,
wherein the secondary stage comprises a mixing device for mixing the first water effluent with a flocculation agent to obtain the first water effluent containing flocculation agent, and a flocculation clarification device,the flocculation clarification device comprises a flocculation reaction chamber allowing the entrance and flocculation reaction of the first water effluent containing flocculation agent to form a mixed liquor of dreg and water, a first separating chamber allowing the entrance and separation of the mixed liquor of dreg and water from the flocculation reaction chamber to obtain a first part of the second water effluent and a first dreg, and a second separation chamber allowing the entrance and separation of a first part of the first dreg to obtain a second part of the second water effluent and a second dreg,wherein the flocculation reaction chamber comprises: a first flocculation reaction chamber and a second flocculation reaction chamber, wherein the first flocculation reaction chamber is disposed to allow the entrance and flocculation reaction of the raw sewage containing flocculation agent and the first part of the mixed liquor of the second flocculation reaction chamber to form the mixed liquor of the first flocculation reaction chamber, the second flocculation reaction chamber is disposed to allow the entrance and flocculation reaction of the mixed liquor of the first flocculation reaction chamber and a second part of the first dreg to form the mixed liquor of the second flocculation reaction chamber, and the second part of the mixed liquor of the second flocculation reaction chamber as a mixed liquor of dreg and water enters into the first separation chamber,wherein the first flocculation reaction chamber is a rotational flow generator comprising a tangential inlet that allows the sewage containing flocculation agent to enter and to form a rotational flow, an opening that allows the first part of the mixed liquor of the second flocculation reaction chamber to enter, and a reaction chamber in which the flocculation reaction occurs, wherein the tangential inlet and the opening are disposed to allow the sewage containing flocculation agent and the first part of the mixed liquor of the second flocculation reaction chamber to mix in the rotational flow generator.