Primary and secondary clarifier's effluent launder dam

摘要

A method and apparatus is provided for converting a conventional waste water treatment plant for use with BPR and/or BPNR processes downstream of a clarifier. The effluent launder is flooded by means of a dam installed in the effluent launder, and waste water is guided to the outlet of the effluent launder by means of a sluice, thereby minimizing air entrainment and turbulence of the waste water downstream of the dam. Benefits obtained by means of the present invention include reduced noise, reduced emission of noxious and malodorous gasses, reduced losses of VFAs from the waste water, and reduced uptake of oxygen into the waste water. In addition, growth of algae within the clarifier is greatly reduced.