44results about How to "Improve oxygen use efficiency" patented technology

The invention provides a domestic sewage treatment device and method by intermittent aeration contact oxidation process, wherein the device comprises a regulating reservoir (or water collecting tank), an naerobic pool, an intermittent aeration contact oxidation pool, a deposition pool and pipe-lines, water pumps for connecting these pools, a bagger is arranged on the extremity end of the intermittent aeration contact oxidation pool. The intermittent aeration contact oxidation pool can be charged with agents on the tail end as required, the sludge in the bagger returns to the anaerobic pool for treatment.

The invention relates to sewage treatment equipment based on in-situ control of biofilm thickness, and a control method of the sewage treatment equipment. The equipment comprises a water inlet tank, a water feed pump, a reactor and a water outlet valve which are sequentially connected, wherein a non-foam aeration membrane is arranged in the reactor; the equipment further comprises a gas pressure regulating valve for adjusting the oxygen partial pressure and the dissolved oxygen concentration in the membrane; one end of the gas pressure regulating valve is connected with an air compressor, and the other end of the gas pressure regulating valve is connected with the non-foam aeration membrane by means of an intake pipe assembly; after sludge is inoculated into the reactor, the pH value of wastewater is adjusted in advance, and the wastewater containing high ammonia nitrogen enters the reactor; by adjusting the oxygen partial pressure and dissolved oxygen concentration in the membrane of the reactor, a oxygen-contaminated substrate is diffused and transmitted in the opposite direction in the biofilm after the biofilm is formed on the surface of the non-foam aeration membrane, and nitrification and denitrification are carried out synchronously. Compared with the prior art, the sewage treatment equipment reduces the demand of an electronic donor, the membrane device occupies a small area, the cost of sewage treatment is lowered, and low-carbon sewage treatment is realized.

The invention relates to an advanced municipal sewage treatment process which comprises the flows of anaerobic pool, oxidation ditch pool, aerobic pool and MBR (membrane bioreactor) membrane pool. The process has two backflow paths: oxidation ditch pool-anaerobic pool and membrane pool-oxidation ditch pool. The pretreated municipal sewage flows through the anaerobic pool, the oxidation ditch pool, the aerobic pool and the membrane pool in sequence, and finally undergoes membrane filtration to obtain treated water. When the process is used for treating municipal sewage, extra addition of carbon source and phosphorous removal drug is not needed, the total nitrogen removal rate and the total phosphorous removal rate can be up to 95% at the same time, the total nitrogen concentration of effluent is less than 5mg/L, the total nitrogen concentration is less than 0.3mg/L, and the other indexes satisfy the national level-I A discharge standard. In the prior art, the total nitrogen removal rate is 62-80% in general, and the total phosphorous removal rate is 70-96.2% in general.

The invention provides a portable oxygen generator, which comprises a shell, an oxygen generation unit, a sensor unit, a pulse electromagnetic valve, an oxygen outlet joint, a control unit and a power supply module, wherein the oxygen generation unit is connected with the oxygen outlet joint through the pulse electromagnetic valve, the oxygen generation unit comprises a direct-current compressor, a molecular sieve and an oxygen storage tank, the direct-current compressor absorbs air from the outside and compresses the air to the molecular sieve for oxygen and nitrogen separation, then oxygen is fed into the oxygen storage tank, the control unit controls and adjusts the pulse electromagnetic valve according to information of the sensor unit, the sensor unit comprises a respiration sensor, and the control unit adaptively controls the oxygen generation unit and the electromagnetic valve to work through a preset program according to detection information of the respiration sensor so as to control the frequency and flow of pulse oxygen supply. According to the invention, the feedback regulation mechanism of the portable oxygen generator not only adapts to the actual oxygen demand of a user in a plateau environment, but also can effectively save energy and prolong the endurance time of the oxygen generator.

The invention relates to the field of environment protection and discloses an in-situ sludge recycling system device which comprises a vertical non-dynamic spiral stirring biological drying device, avertical sandless jet carbonization furnace, a crushing vacuum liquefaction device, a tail gas wet process treatment device, a dust collector, a heat exchanger and a negative pressure device. According to the in-situ sludge recycling system device, sludge is treated by using a technique of biological drying and carbonization energy-saving resource recycling and in-situ recycling, a truly seamlessclosed loop of sludge treatment and disposal is achieved, meanwhile, development of related industries is promoted, and the requirements of "green, recycling and low-carbon" are truly achieved. The technique is a novel comprehensive sludge treatment and disposal system with a high integration degree, and has the technical advantages of being low in operating cost, small in floor space, high in automation degree, simple in operation management, free of secondary pollution, and the like.

The invention belongs to the field of wastewater treatment, and particularly relates to an automatic aeration-type biological membrane transfer device. The automatic aeration-type biological membrane transfer device disclosed by the invention comprises a water channel, a water inlet, a sludge outlet, and a water outlet, wherein the water inlet and the water outlet are located at the lower side of the center line of a spindle, and distributed in a diagonal line on the water channel; the water inlet, the sludge outlet and the water outlet are arranged at different sides of the water channel; the device also comprises a rotating ring; the rotating ring is arranged inside the water channel through a rotating shaft; and the rotating ring is connected with a drive device. The automatic aeration-type biological membrane transfer device adopts a form of the rotating ring, drives the rotating ring to rotate by virtue of rotation of the rotating shaft, alternatively and fully contacts the air and sewage, and carries out oxygen transfer and mass transfer movement. The automatic aeration-type biological membrane transfer device is integrated with the characteristics of large hang membrane area of an elastic solid filler, high processing load, strong impact resistance and the like, and has the advantages of being simple in structure of a biological turntable, low in construction cost, simple to run and maintain, and the like.

The invention relates to an internal component for strengthening a refining wastewater biochemical mixing mass transfer reaction process. The internal component comprises a barrel body and a water and gas distribution structure. The internal component is characterized in that the water and gas distribution internal component mainly comprises a transmission internal component and a mass transfer internal component. The transmission internal component is composed of a hydraulic lifting device, a central circulating cylinder and a water distributor; and the mass transfer internal component is composed of an auxiliary cylinder and a pressure air releaser. The internal component can realize gas-liquid-solid high-strength mixing, has the characteristics of uniform mixing, high mass transfer rate and high oxygen dissolving efficiency, can adjust the radius of reflux circulating water, remarkably strengthens the mixing and mass transfer effects of biochemical reaction, shortens the hydraulic retention time, can be used for a deep water biochemical device, and reduces the occupied area of the biochemical device.

The invention relates to a water body in-situ purification solar aeration plug flow device which comprises floating discs and floating frames, wherein the floating discs are assembled in an annular manner; the floating frames are arranged inside and outside the floating discs; aquatic plants are planted on the floating discs; photovoltaic plates which are uniformly distributed in a circumferentialdirection are arranged on inner sides of the floating discs; the photovoltaic plates are fixed on a bracket and are higher than a water level; the bracket is connected the upper part of a sleeve pilewhich is inserted into the bottom of a water body; an aeration pump is arranged above the water level; the output end of the aeration pump is connected with a micro nanopore aeration tube which is arranged in the water body; a water pump is arranged inside the water body; the output end of the water pump is connected with one end of a water conveying tube; the other end of the water conveying tube is arranged in a water body outside the area of the whole device; pressure stabilizing controllers are arranged on inner sides of the photovoltaic plates; input ends of the pressure stabilizing controllers are electrically connected with the photovoltaic plates; output ends of the pressure stabilizing controllers are connected with the aeration pump and the water pump. By adopting the device, automatic control can be achieved, energy can be saved, the utilization rate of oxygen can be increased, and a good application effect can be achieved in a sealed water body.

The invention provides a full-amount treatment system and method for leachate of a waste transfer station, and the system comprises an electric flocculation reaction tank, an MBR biochemical reactor, an STRO membrane module, an AOP reaction tower and a BAC reaction tower which are connected in sequence, and also comprises an ozone generator, a pure oxygen preparation device and a sludge dewatering device; the anode of the electric flocculation reaction tank can generate oxygen bubbles or chlorine bubbles, and the cathode of the electric flocculation reaction tank can generate hydrogen bubbles; the MBR biochemical reactor comprises an anaerobic tank, an aerobic tank and an MBR ultrafiltration membrane assembly which are connected in sequence, and the aerobic tank performs pure oxygen aeration in a jet aeration feeding manner and can generate oxygen bubbles with the diameter smaller than 50 microns; the STRO membrane assembly is connected with the MBR ultrafiltration membrane assembly, and the AOP reaction tower is connected with a concentrated solution outlet of the STRO membrane assembly; the ozone generator is connected with the AOP reaction tower, the pure oxygen preparation device is respectively connected with the aerobic tank and the ozone generator, and the sludge dewatering device is respectively connected with the electric flocculation reaction tank and the anaerobic tank. According to the invention, the leachate of the waste transfer station can be effectively discharged up to the standard.