Advanced dyeing wastewater treatment and reclaimed water reuse system and method thereof

2009 
The invention relates to an advanced dyeing wastewater treatment and reclaimed water reuse system and a method thereof. The system consists of a regulating tank (2), a coagulation tank (3), a preliminary sedimentation tank (4), an acidification hydrolysis tank (5), a deep well (6), a deaeration tank (7), a secondary sedimentation tank (8), a biological activated carbon tank (9), a sludge concentration tank (10), a sludge dewatering tank (11), a filter tank (12) and an ozone oxidation tank (13). The method comprises the following steps: wastewater is sent to the regulating tank, the coagulation tank and the preliminary sedimentation tank, then sludge is returned to the coagulation tank, excess sludge is discharged to the sludge concentration tank, clarified water flows to the acidification hydrolysis tank, is sent to a deep well aeration tank and then sent to the secondary sedimentation tank; and the obtained clarified water is discharged after meeting the standard, or flows to the biological activated carbon tank and is treated for production. The system and the method have the advantages of simple process, low operating cost, high stability and reliability, convenient operation, and realization of automation control. Most of the wastewater discharged is reused in production after the treated wastewater meets the standard, thus reducing emission of pollutants, being capable of eliminating environmental pollution resulting from the wastewater and protecting environment.
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