PLANTS FOR ADVANCED TREATMENT OF WASTEWATER

摘要

PURPOSE: An advanced sewage-wastewater treatment apparatus is provided to constantly keep aeration power efficiency and oxygen transferring rate high and to reduce energy needed for operational processes. CONSTITUTION: An advanced sewage-wastewater treatment apparatus includes a reactor module and a solid-liquid separator. The reactor module is composed of n variable reactors, and n variable reactors include aerators and stirring units. Each variable reactor operates in a mode selected from an aerating mode, a non-aerating mode, and an intermittently aerating mode. The aerating mode keeps an aerobic condition. The non-aerating mode keeps an anoxic or anaerobic condition. The intermittently aerating mode alternately repeats an aerating stirring operation and an non-aerating stirring operation according to pre-determined conditions. The variable reactors are serially installed to successively treat sewage-wastewater. 3^n treatment processes are implemented on the basis of the combination of the variable reactors. [Reference numerals] (AA) Introducing water; (BB) Pre-solid-liquid separator; (CC) Variable reactor 1; (DD) Variable reactor 2; (EE) Variable reactor n-1; (FF) Variable reactor n; (GG) Solid-liquid separator; (HH) Leachate