4results about How to "Improve biodegradation efficiency" patented technology

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.