Method and apparatus for treating wastewater
AssigneeSamsung E&A Co., Ltd.
InventorsJin Wook CHUNG, Ji Yeon HA, Joon Jee JEONG
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Abstract
Provided are a method and apparatus for treating wastewater. The method includes a step (S10) of producing primary treated water by passing wastewater containing ammonia nitrogen (NH4—N) through a first membrane coupled bioreactor and a step (S20) of producing secondary treated water by passing the primary treated water through a second membrane coupled bioreactor, wherein a partial region of the first membrane coupled bioreactor is operated under aerobic conditions and another region of the first membrane coupled bioreactor is operated under anoxic conditions, and the second membrane coupled bioreactor is operated under anoxic conditions.
Claims24
A method of treating wastewater, comprising
- a step (S10) of producing primary treated water by passing wastewater containing ammonia nitrogen (NH4—N) through a first membrane coupled bioreactor,
- wherein a partial region of the first membrane coupled bioreactor is operated under aerobic conditions and another region of the first membrane coupled bioreactor is operated under anoxic conditions.
-8. (canceled)
-12. (canceled)
A method of treating wastewater, comprising:
- a step (S100) of producing primary treated water by passing wastewater containing ammonia nitrogen (NH4—N) through an activated sludge tank;
- a step (S200) of producing secondary treated water and first sludge by passing the primary treated water through a first settling tank;
- a step (S300) of producing tertiary treated water by passing the secondary treated water through a first two-stage membrane coupled bioreactor;
- a step (S400) of producing quaternary treated water and second sludge by passing the tertiary treated water through a second settling tank;
- a step (S500) of producing digested sludge by passing the second sludge through an anaerobic digestion tank;
- a step (S600) of producing first sludge water and third sludge by passing the digested sludge through a sludge dehydration tank;
- a step (S700) of producing second sludge water by passing the first sludge water through a second two-stage membrane coupled bioreactor;
- and
- a step (S800) of mixing the second sludge water with the primary treated water supplied to the step (S200).
-16. (canceled)
An apparatus for treating wastewater, comprising
- a first membrane coupled bioreactor configured to produce primary treated water by treating wastewater containing ammonia nitrogen (NH4—N),
- wherein a partial region of the first membrane coupled bioreactor is operated under aerobic conditions and another region of the first membrane coupled bioreactor is operated under anoxic conditions.
An apparatus for treating wastewater, comprising:
- an activated sludge tank configured to produce primary treated water by treating wastewater containing ammonia nitrogen (NH4—N) and having a chemical oxygen demand (COD);
- a first settling tank configured to produce secondary treated water and first sludge by partial settling of the primary treated water;
- a first two-stage membrane coupled bioreactor configured to produce tertiary treated water by further treating the secondary treated water;
- a second settling tank configured to produce quaternary treated water and second sludge by partial settling of the tertiary treated water;
- an anaerobic digestion tank configured to produce digested sludge by partially digesting the second sludge;
- a sludge dehydration tank configured to produce first sludge water and third sludge by partially dehydrating the digested sludge;
- and
- a second two-stage membrane coupled bioreactor configured to produce second sludge water by further treating the first sludge water.
-30. (canceled)
Dependencies are inferred from the claim text.