Abstract: Coating compositions that include one or more epoxy resin compositions, one or more metal-containing compound and one or more curing agents are described. The compositions can be applied to steel substrates, including steel substrates such as steel pipe to resist attack by sour gas. When applied to a substrate and cured, these coating compositions demonstrate reduced permeability to hydrogen sulfide.

Abstract: Conversion and passivation coatings and methods for metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise an aqueous sol of cerium oxide and/or silica particles and a ureido silane compound. The methods of the invention comprise contacting the requisite metal surface with the coating composition.

Abstract: A preparation method of a Decoy nucleic acid cationic liposome carrier including: (1) mixing dioleoyl phosphoethanolamine and (2,3-dioleoyl-propyl)-trimethylamine in a mass ratio of 4:1 to 1:4, and adding an organic solvent to obtain a mixed solution through dissolution; (2) completely evaporating the organic solvent in the mixed solution obtained in step (1), dissolving the remaining solid fraction by using an HEPES buffer solution, firstly hydrating the solution for 30 to 60 min, and then ultrasonically processing the solution for 30 to 60 min; (3) filtering the mixed system obtained after processing in the step (2) by a membrane of 0.4 to 0.8 ?m, then filtering the mixed system by a membrane of 0.03 to 0.2 ?m, and preparing uniformly to distributed blank liposome with small grain size; and (4) mixing the blank liposome with protamine and Decoy nucleic acid according to a mass ratio of (50 to 120):(10 to 20):1, and incubating for 12 to 24 h at the temperature of 2° C. to 8° C.

Abstract: Coating compositions that include one or more epoxy resin compositions, one or more metal-containing compound and one or more curing agents are described. The compositions can be applied to steel substrates, including steel substrates such as steel pipe to resist attack by sour gas. When applied to a substrate and cured, these coating compositions demonstrate reduced permeability to hydrogen sulfide.

Abstract: Conversion and passivation coatings and methods for treating metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise a silane and a stabilizing agent. The methods herein comprise contacting the requisite metal surface with the coating composition.

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 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 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 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: Conversion and passivation coatings and methods for treating metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise a silane and a stabilizing agent. The methods herein comprise contacting the requisite metal surface with the coating composition.

Abstract: Conversion and passivation coatings and methods for metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise an aqueous sol of cerium oxide and/or silica particles and a ureido silane compound. The methods of the invention comprise contacting the requisite metal surface with the coating composition.