WASTEWATER TREATMENT APPARATUS CAPABLE OF PERFORMING BOTH INITIAL RAINWATER OVERFLOW TREATMENT AND PRIMARY TREATMENT, AND WASTEWATER TREATMENT METHOD ACCORDING TO SAID APPARATUS

摘要

A wastewater treatment apparatus performs both initial rainwater overflow treatment and primary treatment. A wastewater treatment method according to the apparatus, the apparatus modifying an existing primary depositing reservoir to an up-flow high-speed filtration facility, the apparatus using a floating filter and biological filter paper applied to an existing depositing reservoir to perform an initial rainwater treatment. The apparatus can be applied to an existing wastewater treatment facility to eliminate the necessity of installing an additional facility for an initial rainwater treatment facility. The apparatus is further capable of adjusting the flow rate into a biological treatment facility to achieve a target water quality. The apparatus comprises: an up-flow high-speed filtration facility for filtering floating matter contained in wastewater using a floating filter; a sludge holding tank; a biological treatment facility for removing dissolved organic matter contained in the water discharged from the up-flow high-speed filtration facility; and a concentrator.

主权项

1. A wastewater treatment apparatus capable of performing both of an initial rainwater overflow treatment and a primary treatment, comprising:
an up-flow high-speed filtration facility configured to filter floating matter contained in wastewater using a floating filter; a sludge holding tank configured to hold intermittently generated backwash water and thus equalize a flow rate and a load of a follow-up concentrator; a biological treatment facility configured to remove dissolved organic matter contained in water discharged from the up-flow high-speed filtration facility; and a concentrator configured to increase a concentration of backwash sludge of the sludge holding tank before the backwash sludge is injected into a sludge treatment process.