Grease and scum removal in a filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials
AssigneeSiemens Water Technologies Corp.
InventorsEdward John Jordan, Robert Elefritz
Life of this patent
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Abstract
The invention relates to a membrane bioreactor process combined with an advanced biological sludge digestion process that provides significant improvements in sludge digestion by reducing the costs and resources required for disposing of digested sludge. The offline treatment vessel is used to solubilize the organic material by operating in a very low oxygen environment. Digested process fluid is transferred back to the membrane bioreactor. The processes and apparatus substantially reduce the production of waste sludge. The device includes one or more weirs operable to remove grease and scum.
Claims27
A membrane bioreactor for wastewater purification comprising:
- a biological purification system;
- an immersed membrane purification system;
- a downstream channel for fluid flow from the biological purification system to the membrane purification system;
- a return channel for fluid flow from the membrane purification system to the biological purification system;
- an overflow weir on the downstream channel to remove overflow and floating impurities from the downstream channel.
A membrane bioreactor for wastewater purification comprising:
- a biological purification system;
- an immersed membrane purification system;
- a downstream channel for fluid flow from the biological purification system to the membrane purification system;
- and
- an overflow weir on the downstream channel to remove overflow and floating impurities from the downstream channel.
A membrane bioreactor for wastewater purification comprising:
- a biological purification system;
- an immersed membrane purification system;
- a return channel for fluid flow from the membrane purification system to the biological purification system;
- an overflow weir on the return channel to remove overflow and floating impurities from the membrane purification system.
Dependencies are inferred from the claim text.