4 results about "Membrane bioreactor" patented technology

The invention discloses a magnetic bioreaction separation device for treating organic wastewater, which comprises a magnetic bioreactor and a rare-earth magnetic disc separation device, wherein the magnetic bioreactor consists of a reaction vessel, and microbe carrier magnetic species or magnetic zooglea formed by the microbe carrier magnetic species, which is placed in the reaction vessel; the magnetic bioreactor is connected with the rare-earth magnetic disc separation device by a flowing discharge pipeline; and the upper part of the rare-earth magnetic disc separation device is provided with a water outlet pipe, and the lower part thereof is provided with a sludge discharge valve. Since the invention utilizes the microbes attached to the microbe carrier magnetic species or magnetic zooglea to decompose the organic matter, while the magnetic zooglea and the treated water can be treated by the rare-earth magnetic disc separation device for solid-liquid separation, not only the cost on the investment and operation is lower than that of the membrane bioreactor, but also the separation efficiency is high, the energy consumption is low, and the effect on denitrification, phosphorous, SS, COD and BOD removal; and the invention is particularly suitable for treating the organic wastewater with large flow and high concentration.

The invention relates to a refuse treatment equipment, specifically to a refuse leachate ammonia nitrogen handling arrangement based on membrane bioreactor. The provided refuse leachate ammonia nitrogen handling arrangement based on membrane bioreactor is provided with a reaction tank, a supporting plate, a composite membrane-cloth bag component, cloth water pipe, cloth gas tube, a mud discharging chamber and a mud valve, wherein, the supporting plate is located below the reaction tank, the composite membrane-cloth bag component is located on the supporting plate, the composite membrane-cloth bag component is provided with a non-woven cloth bag and a guide plate, the non-woven bag is stuffed with oyster shell particles, diaphragms are provided respectively on both sides of the non-woven cloth bag, the guide plate is arranged at the outside of the diaphragm; the cloth gas tube is located above the supporting plate and below the supporting plate, the cloth gas tube is connected to an aerator which loads air in the cloth gas tube; the cloth water pipe is located below the supporting plate, and the cloth water pipe is in external connection to a water inlet pipe; the mud valve is located at the bottom of the mud discharging chamber.

The invention discloses a plate heat exchanger for triple-effect heat energy reusing, and belongs to the technical field of environmental protection machines. The plate heat exchanger structurally comprises heat-exchanging plate sheets, a sealing pad, a sealing ring, a heat-exchanging water inlet, a heat-exchanging water outlet, a heat medium inlet, a heat medium outlet, top plates, two intermediate plates and a screw rod; and the top plates are arranged at the two ends, the two intermediate plates are arranged in the middle, heat-exchanging zones are divided into three sets, the first set ofheat-exchanging zone is arranged on the water inlet side, the second set of heat-exchanging zone is arranged between the two intermediate plates in the middle, and the third set of heat-exchanging zone is arranged on the water outlet side. The plate heat exchanger for triple-effect heat energy reusing is suitable for being used at the water inlet front end of an external membrane bioreactor (MBR)or a nanofiltration or reverse osmosis membrane in sewage treatment, membrane effluent and membrane recirculation water serve as a first-stage heat-exchanging medium and a second-stage heat-exchangingmedium to conduct heat energy in the membrane effluent and the membrane recirculation water into inlet water of the membrane, thus the heat energy is recycled, and water or steam heated by a boiler serves as a third-stage heat-exchanging medium so as to reach the optimum temperature of the inlet water of the membrane.

The invention discloses a biochemical treatment method and device for benzo (a) pyrene in coking wastewater. The method comprises the following steps: S1, introducing coking wastewater into a homogeneous regulation device for homogeneous regulation to obtain first effluent; s2, the first effluent obtained in S1 is introduced into an oil separation device for oil separation treatment, and second effluent is obtained; s3, introducing the second effluent obtained in S2 into a coagulating sedimentation device for coagulating sedimentation treatment to obtain third effluent subjected to coagulating sedimentation treatment; s4, the third effluent obtained in S3 is introduced into a filtering device for filtering treatment, and fourth effluent obtained after filtering treatment is obtained; s5, introducing the fourth effluent obtained in S4 into an MBR (Membrane Bioreactor) for biochemical reaction to obtain fifth effluent and reacted activated sludge; and S6, introducing the fifth effluent obtained in the step S5 into an adsorption device for adsorption treatment. The device is high in activated sludge concentration, simplified in structure and small in occupied area, and the production and manufacturing cost and the use and operation cost of the benzo (a) pyrene-containing sewage treatment device can be reduced.