Abstract: A method for treatment of sludge with a facultative-organism-adapted membrane bioreactor by providing a sludge treatment system comprising a facultative digestion tank, a membrane module, an aeration system, a sludge pump, and a drainage pump, pumping sludge into the facultative digestion tank via the sludge pump and allowing for digestion, synchronously aerating and scouring the membrane module by the aeration system, pumping the sludge by the drainage pump and filtrating by the membrane module so that sludge and water are separated, and draining the water via the drainage pump. The method can digest sludge completely in the digestion tank, and solves problems existing in conventional sludge treatment methods such as large investment and high transportation cost, even achieves a subject of zero discharge of sludge.

Abstract: A method for removing phosphorus includes at least the steps of: 1) placing lanthanum oxide hydrate (absorbent) into a device for removing phosphorus, and allowing sewage having a phosphorus content of less than 100 mg/L to flow through the device; 2) adding sodium hydroxide (regeneration solution of the absorbent) when the absorption capacity of the device is exhausted, and allowing the regeneration reaction to proceed for between 4 and 12 hours; and 3) collecting eluate from step 2) and recycling phosphorus.

Abstract: A jet aeration apparatus for aerating a membrane bioreactor has a jet aerator and an air supply pipe. The jet aerator is disposed in the membrane bioreactor and includes a water inlet, a pump disposed below a liquid surface of the membrane bioreactor, an air inlet pipe whose air inlet is disposed above the liquid surface of the membrane bioreactor, and a jet pipe having a jet nozzle. The air supply pipe includes a connector; and the connector of the air supply pipe is connected to the jet nozzle of the jet pipe of the jet aerator. A method of using the jet aeration apparatus is also provided. The jet aeration apparatus is easy to install, quiet in operation, and features a high degree of integration.

Abstract: A method for forming a facultative-organism-adapted membrane bioreactor by: providing a membrane bioreactor having a membrane module, aerating intensively the membrane module at a lower part thereof and maintaining the scouring against the membrane module so that an aerobic environment is formed at a middle and lower part of the membrane module, and controlling aeration intensity so that a facultative or anaerobic environment is formed around the membrane module excluding the middle and lower part thereof. The a facultative-organism-adapted membrane bioreactorformed by the method has low energy consumption, low sludge yield coefficient, and high efficiency of nitrogen and phosphorus removal.

Abstract: A method for removing phosphorus includes at least the steps of: 1) placing lanthanum hydroxide (absorbent) into a device for removing phosphorus, and allowing sewage having a phosphorus content of less than 100 mg/L to flow through the device; 2) adding sodium hydroxide (regeneration solution of the absorbent) when the absorption capacity of the device is exhausted, and allowing the regeneration reaction to proceed for between 4 and 12 hours; and 3) collecting eluate from step 2) and recycling phosphorus. The method for removing phosphorus is highly efficient, employs absorbent material having a large absorption capacity and low production cost. The method is simple and convenient to practice, and low in cost.

Abstract: A method for removing phosphorus having steps of a) providing a membrane bioreactor having a membrane module having a lower part; b) aerating intensively the lower part of the membrane module while controlling dissolved oxygen concentration around the membrane module at more than 2 mg/L and dissolved oxygen concentration in the rest zone at less than 1 mg/L so as to form an aerobic zone, a facultative aerobic zone, and an anaerobic zone; and c) introducing sludge having a concentration of between 10,000 mg/L and 30,000 mg/L and having an organic loading of between 0.08 and 0.07 Kg (COD)/(Kg (MLSS)·d) into the membrane reactor so that phosphorus is absorbed in the aerobic zone, released in the facultative aerobic zone, and reduced by phosphine-reducing bacteria into phosphine. The method for removing phosphorus does not include discharging sludge. An apparatus employed for the process does not take up much additional space.

Abstract: A method for forming a facultative-organism-adapted membrane bioreactor by: providing a membrane bioreactor having a membrane module, aerating intensively the membrane module at a lower part thereof and maintaining the scouring against the membrane module so that an aerobic environment is formed at a middle and lower part of the membrane module, and controlling aeration intensity so that a facultative or anaerobic environment is formed around the membrane module excluding the middle and lower part thereof. The a facultative-organism-adapted membrane bioreactorformed by the method has low energy consumption, low sludge yield coefficient, and high efficiency of nitrogen and phosphorus removal.

Abstract: A method for treatment of sludge with a facultative-organism-adapted membrane bioreactor by providing a sludge treatment system comprising a facultative digestion tank, a membrane module, an aeration system, a sludge pump, and a drainage pump, pumping sludge into the facultative digestion tank via the sludge pump and allowing for digestion, synchronously aerating and scouring the membrane module by the aeration system, pumping the sludge by the drainage pump and filtrating by the membrane module so that sludge and water are separated, and draining the water via the drainage pump. The method can digest sludge completely in the digestion tank, and solves problems existing in conventional sludge treatment methods such as large investment and high transportation cost, even achieves a subject of zero discharge of sludge.

Abstract: A method for cleaning a reclaimed water reuse device, the reclaimed water reuse device comprising a clean water supply device, a first aeration device, a backwash device and a membrane module, the method comprising detecting an operating signal of the clean water supply device; enabling the first aeration device or the backwash device according to the operating signal, so as to perform backwash of the membrane module; and completing washing back and restoring to a normal operating state.

Abstract: A jet aeration apparatus for aerating a membrane bioreactor has a jet aerator and an air supply pipe. The jet aerator is disposed in the membrane bioreactor and includes a water inlet, a pump disposed below a liquid surface of the membrane bioreactor, an air inlet pipe whose air inlet is disposed above the liquid surface of the membrane bioreactor, and a jet pipe having a jet nozzle. The air supply pipe includes a connector; and the connector of the air supply pipe is connected to the jet nozzle of the jet pipe of the jet aerator. A method of using the jet aeration apparatus is also provided. The jet aeration apparatus is easy to install, quiet in operation, and features a high degree of integration.

Abstract: A method for cleaning a reclaimed water reuse device, the reclaimed water reuse device comprising a clean water supply device, a first aeration device, a backwash device and a membrane module, the method comprising detecting an operating signal of the clean water supply device; enabling the first aeration device or the backwash device according to the operating signal, so as to perform backwash of the membrane module; and completing washing back and restoring to a normal operating state.

Abstract: Taught herein is a reclaimed water reuse device, comprising a biological reaction tank, a membrane module, a water pool, an inlet-drainage device, an outlet device, a water-generating device, a first aeration device, a backwash device and a membrane filtering pool, wherein the inlet-drainage device feeds water into or drains water from the biological reaction tank; the water generating pipe supplies clean water from the membrane module to the water pool; the first aeration device cleans the membrane module; the membrane module is disposed in the membrane filtering pool; the backwash device is connected to the membrane module via the outlet device; and the backwash device washes back the membrane filtering pool. A method for cleaning a reclaimed water reuse device is also taught herein.

Abstract: Taught herein is a reclaimed water reuse device, comprising a biological reaction tank, a membrane module, a water pool, an inlet-drainage device, an outlet device, a water-generating device, a first aeration device, a backwash device and a membrane filtering pool, wherein the inlet-drainage device feeds water into or drains water from the biological reaction tank; the water generating pipe supplies clean water from the membrane module to the water pool; the first aeration device cleans the membrane module; the membrane module is disposed in the membrane filtering pool; the backwash device is connected to the membrane module via the outlet device; and the backwash device washes back the membrane filtering pool. A method for cleaning a reclaimed water reuse device is also taught herein.

Abstract: The present invention teaches a hybrid aeration membrane bioreactor, comprising a bio-reaction tank; a plurality of membrane modules disposed within the bio-reaction tank; a macropore aeration apparatus comprising a first aeration pipe; a plurality of macropore heads having each a plurality of macropores, the macropore heads being disposed on the first aeration pipe; and a first gas pump; and a micropore aeration apparatus comprising a second aeration pipe; a plurality of micropore heads having each a plurality of micropores, the micropore heads being disposed on the second aeration pipe; and a second gas pump; wherein the first aeration pipe is connected to the first gas pump; the second aeration pipe is connected to the second gas pump; the macropore head is disposed below the membrane module; the micropore head is disposed near the bottom of the bio-reaction tank; and the micropores are smaller in diameter than the macropores.