7results about How to "Improve biodegradation efficiency" patented technology

The present application relates to an MBR integrated sewage treatment system and sewage treatment process, including a biological reactor, a membrane biological reactor and a filtering device. The biological reactor is used to place sludge that can degrade pollutants in sewage, and a water inlet pipe connected to the inside of the biological reactor is provided on one side of the biological reactor; the membrane biological reactor is located on the side of the biological reactor away from the water inlet pipe, the membrane biological reactor is connected to the biological reactor, and a water outlet pipe connected to the membrane biological reactor is provided on the end of the membrane biological reactor away from the biological reactor; the filtering device is located in the membrane biological reactor, and the filtering device includes a plurality of fixed frames, and a plurality of MBR filter membranes are staggered and stacked in the fixed frames. The present application has the effect that the staggered and stacked MBR filter membranes provide a certain support force to each other, thereby reducing the damage of the shear force of the water flow to the MBR filter membrane, thereby reducing the replacement frequency of the MBR filter membrane.

The invention relates to the technical field of sewage treatment, in particular to a biochemical wastewater adjusting tank with built-in filler, which comprises a tank body, a filler frame, biological filler and a driving device.The filler frame comprises at least two support shafts vertically fixed at the bottom of the tank body and two flexible belts wound between the at least two support shafts and parallel to each other; the two flexible belts can synchronously move in the same direction between the at least two supporting shafts; a plurality of rope-shaped biological fillers are connected between the two flexible belts; the driving device is configured to be capable of driving the two flexible belts to synchronously move in the same direction. According to the invention, the contact area between the biological filler and wastewater in the tank body can be increased, the formation of a biological membrane on the biological filler is promoted, the phenomena of mutual winding, clustering and even breakage of the biological filler in the movement process in the tank body are avoided, and the service life of the biological filler is effectively prolonged.

The invention discloses an in-situ layered repair device and method for groundwater in a chlorinated hydrocarbon contaminated site. The device comprises a repair well, an injection assembly and an adjusting motor. A plurality of injection holes of different heights are arranged on the side wall of the repair well. The injection assembly is used to inject an external repair agent into the groundwater in the chlorinated hydrocarbon contaminated site at different depths through the injection holes of different heights. The adjusting motor is used to drive the injection assembly to move up and down inside the repair well. The repair device of the invention has a reasonable structural design. By arranging the injection assembly that can move up and down inside the repair well, it is convenient to inject the repair agent into the groundwater in the chlorinated hydrocarbon contaminated site in layers, which not only improves the diffusion efficiency of the repair agent in the groundwater in the contaminated site, but also can adjust the injection amount of the repair agent according to the contamination degree of the groundwater in the contaminated site, thereby improving the scientific nature of the repair of the groundwater in the chlorinated hydrocarbon contaminated site and being suitable for popularization and use.

The application relates to a Bacillus subtilis strain and an application thereof. The strain (Bacillus subtilis) XY01 is preserved in the China Center for Type Culture Collection on September 5, 2022, and the preservation number is CCTCC M20221379. The Bacillus subtilis XY01 degrades grass plants, is used for manufacturing straw pulp by a biological method, and is used for preparing humic acid by using straw pulp black liquor, realizes resource utilization of agricultural solid waste resources such as straw stalks, the black liquor generated in the pulping process is used for field application, and the production chain does not cause environmental pollution. The Bacillus subtilis is mild in the decomposition condition in the biological manufacturing of straw pulp, short in the production cycle, and friendly to the environment.

The application relates to a degradable polyester fiber layered sound-absorbing board and a preparation method thereof, and belongs to the technical field of sound-absorbing boards; a photosensitive chain extender is prepared, the photosensitive chain extender can participate in ester exchange reaction of polyester fiber synthesis to modify the polyester fiber, and the melt strength of the polyester fiber after melting is improved. The probability of dripping or even breaking of the polyester fiber melt in the spinning process is reduced, and the stretching resonance problem of the polyester fiber melt due to external tension fluctuation in the stretching process is avoided. The modified polyester fiber can be spun into fiber with lower fineness and more uniform thickness, and the sound-absorbing board prepared by using the modified polyester fiber can increase the specific surface area and flow resistance of the board, so that the sound-absorbing efficiency of the sound-absorbing board is improved.

The utility model discloses movable river sludge reduction online treatment equipment which comprises a floating raft, an aeration device and a filter screen box, and the floating raft comprises pedals on two sides and buoys arranged at the lower parts of the pedals; the middle of the pedal is of an open structure, a supporting frame is arranged on the open portion of the pedal, a lifting opening is formed in the middle of the supporting frame, the filter screen box is arranged below the lifting opening, lifting rings are arranged on the two sides of the filter screen box respectively, winding devices are arranged at the corresponding positions, located above the lifting rings, of the supporting frame respectively, and steel wire ropes are wound around the winding devices. The lower end of the steel wire rope is connected; the aeration device comprises a submersible pump mounted in the filter screen box, a microporous aeration head connected with a water outlet pipe of the submersible pump, and an air inlet pipe communicated with the microporous aeration head. The device is convenient to operate and wider in application range, can play an important role in the reduction treatment process of the deposited sludge in the river channel, realizes efficient aeration, saves the cost, improves the biodegradation efficiency, and ensures the sludge reduction effect.

This utility model relates to the field of water purification technology, and more particularly to a slow filtration water purification device based on a biofilm attached to activated carbon. It includes a first shell and a second shell, connected by a connecting pipe. The first shell contains an activated carbon-coated felt anode layer and an activated carbon-coated felt cathode layer. Both the first and second shells contain a quartz sand-modified activated carbon layer. A ring-shaped water distributor is positioned above the quartz sand-modified activated carbon layer, and a lower pad layer is positioned below it. An ultraviolet lamp is also installed inside the second shell. This utility model, by attaching a biofilm to the surface of activated carbon, utilizes the metabolic and biodegradation capabilities of microorganisms. Simultaneously, it combines the treated water flow with the activated carbon, and through the synergistic effect of the biofilm and adsorption, improves the removal rate of harmful substances in the water, enhances the removal capacity for various pollutants, and improves water purification efficiency and quality.