Moving bed membrane bioreactor
AssigneeUniversity of Regina
InventorsStephanie Young, Alex Munoz
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Abstract
This disclosure relates to a moving bed membrane bioreactor. The moving bed membrane bioreactor package plant comprises a pre-treatment system, a moving bed membrane bioreactor, and a post-treatment system. This disclosure further relates to mechanical devices and operational processes for a moving bed membrane bioreactor package plant for greywater and wastewater reclamation and reuse. This disclosure further relates to a bioreactor for greywater reclamation that integrates biofilm carriers with a hollow fibre membrane module and dual aeration system.
Claims28
A moving bed membrane bioreactor package plant for greywater reclamation or wastewater treatment and reuse, comprising;
- a. Pre-treatment system,
- b. Moving bed membrane bioreactor, and
- c. Post-treatment system.
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A process from treating wastewater or greywater in a moving bed membrane bioreactor comprising the steps of:
- a. Feeding wastewater to the bottom of a bioreactor tank where biological processes reduce wastewater contaminants to such a low levels that permit effluent reuse;
- b. Integrating suspended growth and attached growth activated sludge process in conjunction with membrane filtration process to provide an equivalent mixed liquor suspended solids of 15,000 mg, MLSS/L;
- c. Providing nitrogen removal in a single bioreactor tank;
- d. Providing upwards wastewater flow through the bioreactor;
- e. Providing one or more membrane modules submerged into the mixed liquor so that the hollow fibre membranes can separate the permeate from the sludge under negative pressure provided by a pump;
- f. Proving air scour bubbles to dislodge sludge accumulated on the surface of the membrane fibres;
- g. Providing continuous circulation of oxygen enriched sludge from the surface of the membrane to the bottom of bioreactor;
- h. Providing a perforated pipe for mixing and aeration, and
- i. Providing automated control of membrane filtration and backwash units.
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Dependencies are inferred from the claim text.