Patent ID: 7297273
Filing Date: 2007-11-20
Classification: C02F

Abstract:
1. A method of biological treatment for completely removing compost decomposed from dissolved organic matter (COD) by decomposers, the method biological treatment comprising the steps of: adopting algae and diatoms that are cultivated under special conditions to treat wastewater containing excreta, applying Calcium Salt and Silica Salt to develop a competence cell in said algae and diatoms, removing insoluble compost contained in the wastewater and excreta, after the dissolved organic matter (COD) have been decomposed by the decomposers, and removing pollutants contained in the wastewater through a series of multiple stage treatment tanks, which consist of 3˜1,000 stages each 4˜8 inches in width and sequentially diluting the wastewater under different cultivating conditions.