公开(公告)号：US20230045679A1

公开(公告)日：2023-02-09

申请号：US17968569

申请日：2022-10-18

Applicant: BL Technologies, Inc.

Inventor： Pierre Lucien COTE ,  John David IRELAND ,  Nicholas William H. ADAMS ,  Steven Kristian PEDERSEN

IPC: C02F3/20 ,  C02F3/12 ,  B01F23/231 ,  B01F23/20 ,  C02F3/28 ,  C02F3/10 ,  B01F23/237 ,  B01F101/00 ,  C02F103/06

Abstract: An apparatus has a plurality of gas transfer membranes. The apparatus floats in water with the membranes submerged in the water. To treat the water, a gas is supplied to the membranes and is transferred to a biofilm supported on the membranes or to the water. Gas is also used to supply mixing or membrane scouring bubbles to the water. The mixing or scouring bubbles can be provided by a cyclic aeration or other gas supply system, which optionally provides gas at a variable pressure to the membranes in parallel or series with an aerator. Condensates can be removed from the membranes, and exhaust gasses from the membranes can be monitored, optionally through one or more dedicated pipes.

公开(公告)号：US20210253460A1

公开(公告)日：2021-08-19

申请号：US16973750

申请日：2018-06-27

Applicant: BL TECHNOLOGIES, INC.

Inventor： Dwight Cornelius HOUWELING ,  John David IRELAND ,  Douglas Joseph THOMPSON ,  Jeffrey Gerard PEETERS

IPC: C02F3/10 ,  C02F3/00 ,  C02F3/20 ,  C02F3/30

Abstract: A hybrid membrane aerated biofilm reactor (MABR) and activated sludge (AS) system and process are described herein. At least a portion of the AS system includes aerobic mixed liquor, for example in an aerobic tank or zone downstream of a tank or zone containing membrane aerated biofilm modules. The flow of air to the membrane aerated biofilm is modulated considering the ammonia loading rate to the system or to the aerobic mixed liquor, for example according to a diurnal cycle. For example, air flow to the membrane supported biofilm can be below an average or initial air flow rate during a period of low ammonia loading. Air flow to the aerobic mixed liquor may remain essentially constants during the same period. Optionally, mixed liquor around the membrane aerated biofilm modules may be aerated during a period of high ammonia loading.