Oxidation ditch with solid-liquid separation accelerator

• Main Authors: JU SUWEI, CHEN YUWEI, HOU TENGQUAN
• Format: Patent
• Language: English
• Published: 22.10.2014
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model relates to an oxidation ditch with a solid-liquid separation accelerator, which aims to enhance the wastewater treatment efficiency and facilitate the silt cleaning and belongs to the technical field of wastewater biological treatment. The oxidation ditch is characterized in that a stirring drum is provided with an upper opening and a lower opening and is in an inverted conical structure with a bigger upper part and a smaller lower part; the stirring drum is vertically arranged in the oxidation ditch body; a guide shell and the stirring drum are arranged coaxially and perpendicularly; the guide shell is arranged on the outer side of the stirring drum; the inner side surface of the stirring drum is fixed with an end point of the furcation on the lower end of a shell shaft bracket center shaft in a welding mode; and the upper end of the shell shaft bracket center shaft is connected with a rotating shaft of a variable-speed motor. When the stirring drum rotates, an ascending water flow is generated between the stirring drum and guide shell; after the stirring drum stops, the precipitation of the wastewater in the stirring drum is accelerated, thereby increasing the solid-liquid separation speed; and a silt hopper is arranged below the stirring drum, and a sludge suction pump is connected with a discharged sludge concentration tank outside the oxidation ditch body through a sludge delivery pipe, thereby enhancing the treatment efficiency of the wastewater in the oxidation ditch and prolonging the desilting period.