Method and apparatus for the biological treatment of waste water专利检索-活性污泥水处理专利检索查询-专利查询网

Method and apparatus for the biological treatment of waste water

阅读：473发布：2024-02-02

专利汇可以提供Method and apparatus for the biological treatment of waste water专利检索，专利查询，专利分析的服务。并且A system for active sludge waste water treatment comprises an aerating chamber and a clarifying chamber. Raw water is introduced into the aerating chamber where liquid is circulated in a path in the aerating chamber and the liquid is aerated. A portion of the circulating liquid is conveyed to the clarifying chamber where the sludge settles to the bottom. Settled sludge is conveyed from the bottom of the clarifying chamber and introduced into the aerating chamber in a direction substantially the same as the direction of motion of the liquid in the path of circulation in the clarifying chamber. Clarified water is removed from the top of the clarifier and sludge is withdrawn from the aerating chamber.，下面是Method and apparatus for the biological treatment of waste water专利的具体信息内容。

权利要求

2. Apparatus according to claim 1 wherein said sludge conveying conduit means is positioned to introduce said sludge into said aerating chamber in a generally downward direction.

3. Apparatus according to claim 1 including means to maintain the water level in said clarifying chamber higher than in said aerating chamber.

4. Apparatus according to claim 1 including means for removing sludge from said apparatus.

5. Apparatus according to claim 4 wherein said sludge removal means comprises conduit means to convey sludge from the bottom of said aeration chamber to a collecting chamber.

6. Apparatus according to claim 1 wherein said aerating means comprises a surface aerator, and wherein said aerated liquid conveying means comprises a channel disposed within the splash range of said surface aerator above the liquid level of said aerating chamber.

7. Apparatus according to claim 6 wherein said circulating means comprises said surface aerator.

8. Apparatus according to claim 1 comprising A unitary structure including said aerating chamber and said clarifying chamber and including a wall separating said chambers, said wall being inclined such that the cross-sectional area of said clarifying chamber tapers inward downwardly.

9. Apparatus according to claim 1 wherein the cross-sectional area of said sludge conveying conduit means tapers inwardly in the flow direction.

10. Apparatus according to claim 8 wherein the unit comprises two basic units, each unit comprising that portion of the apparatus lying on one side of a plane substantially vertical to said wall, said units being secured together to form said chambers.

11. Apparatus according to claim 10 including additional wall elements interposed between said units and forming with said units an aerating chamber and clarifying chamber of increased size.

12. A method of biologically treating waste water by an activated sludge process which comprises: introducing raw water into an aerating zone; circulating liquid at the surface of liquid in said aerating zone to aerate said liquid and to circulate the liquid in a flow path in said aerating zone; conveying aerated liquid from said aerating zone into a separate clarifying zone the aerated liquid being introduced adjacent the level of the liquid maintained in said clarifying zone; removing clarified liquid from said clarifying zone at a point adjacent the level of liquid maintained in said clarifying zone at a location remote from the introduction of aerated liquid thereto to induce a horizontal flow of liquid across said clarifying zone from the aerated liquid inlet to the clarified liquid outlet adjacent the level of the liquid in said clarifying zone; conveying sludge settled from said aerated liquid in said settling zone into said flow path in said aerating zone in a direction substantially the same as the direction of motion of said liquid circulating in said flow path; and removing sludge from said aerating zone.

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Method and apparatus for the biological treatment of waste water

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