Activated sludge plant
阅读：854发布：2021-10-20
专利汇可以提供Activated sludge plant专利检索，专利查询，专利分析的服务。并且A sewage treatment apparatus adapted to handle sewage loading, the apparatus designed for aerobic decomposition of fresh sewage and comprising in series: a digester tank, a plurality of aeration tanks, a settling tank, and a final aeration tank, wherein a raw sewage influent passes through an activated sludge process and is discharged as a purified water effluent.，下面是Activated sludge plant专利的具体信息内容。
1. An activated sludge plant connected to an influent pipe, the activated sludge plant comprising: a digester tank having an intake opening and an exhaust opening, said intake opening fluidly connected to the influent pipe; a plurality of aerating tanks fluidly interconnected in series, each said aerating tank having an inlet opening and an outlet opening with said inlet opening of the first said aerating tank fluidly connected to said digester tank exhaust opening, said outlet opening of said first and intermediate aerating tanks fluidly connected respectively to the inlet opening of the next adjacent aerating tank; a settling tank having an inlet hole and an Outlet hole, said inlet hole fluidly interconnected to said last aerating tank outlet opening, said settling tank provided to permit scum and sludge to separate from the liquid with the scum floating to the top and the sludge settling to the bottom thereof; an inlet conduit disposed in said settling tank and fluidly connected on one end to said inlet hole with the other end thereof disposed adjacent the bottom of said settling tank; a scum board disposed in said settling tank proximate said outlet hole, said scum board operable to substantially prevent the scum from flowing through said outlet hole; a final aeration tank having an inlet opening and an outlet opening formed thereon, said inlet opening fluidly connected to said outlet hole and said outlet opening operable to discharge effluent from said final aerating tank; and air supply means mounted in each said aerating tank and operable to emit air into each said aerating tank; wherein fresh sewage flows into said digester tank, from said digester tank through said plurality of aeration tanks wherein it is aerated, from the last said aeration tank into said settling tank, from said settling tank into said final aeration tank where it is again aerated, and then out of said final aeration tank as substantially purified water effluent.
2. An activated sludge plant as defined in claim 1 including an open topped trough mounted on the wall of said settling tank between said scum board and said outlet hole wherein said trough is fluidly connected to said outlet hole and provides a passage in which the liquid in said settling tank flows to said outlet hole.
3. An activated sludge plant as defined in claim 1 including a sludge conduit having one end disposed in said settling tank adjacent the bottom thereof and the other end disposed in said first aerating tank, and a sludge pump fluidly connected to said sludge conduit and operable to pump sludge from said settling tank to said first aerating tank.
4. An activated sludge plant as defined in claim 1 including a scum conduit having one end disposed in the upper portion of said settling tank and the other end disposed in the upper portion of said digester tank, and a scum pump fluidly connected to said scum conduit and operable to pump the scum from said settling tank to said digester tank.
5. An activated sludge plant as defined in claim 4 including an open topped container mounted in said settling tank which is adapted to receive the scum which floats in said settling tank, said scum conduit one end disposed therein, and control means operably connected to said scum pump to activate said scum pump to pump the contents in said container to said digester tank.
6. An activated sludge plant as defined in claim 1 wherein said air supply means comprises an air pump; a feed line fluidly connected to said pump and extending adjacent said aerating tanks; downcomers extending from said feed line to the lower portion of each of said aerating tanks; perforated longitudinals fluidly connected to each of said downcomers and extending along one wall of each said aerating tanks; a valve disposed at the top of each downcomer and adaptable to regulate the amount of air being delivered to each longitudinal.
7. An activated sludge plant as defined in claim 6 wherein said valves are so regulated as to successively decrease the amount of air being delivered, respectively, in said successive aerating tanks.
8. An activated sludge plant as defined in claim 7 wherein the bottom wall of each said aerating tanks is sloped downwardly toward said longitudinals.
9. An activated sludge plant as defined in claim 1 wherein the bottom wall of said settling tank is hopper-shaped, sloping downwardly towards it center. 10 An activated sludge plant as defined in claim 7 including an open topped trough mounted on the wall of said settling tank between said scum board and said outlet hole wherein said trough is fluidly connected to said outlet hole and provides a passaGe in which the liquid in said settling tank flows to said outlet hole, said trough having a V-shaped bottom with the apex thereof disposed in adjacent the lower edge of said outlet hole and the upper edges of the trough bottom are disposed outwardly from said apex and above said outlet hole outer edge, and the upper outer edge of said trough is corrugated with V-notches.
11. An activated sludge plant as defined in claim 10 including a timer device operably connected to said scum pump wherein said pump will operate at predetermined times.
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