Abstract: A preparation method and application of a red mud-enhanced magnetic straw biochar material includes the following steps of: naturally air-drying or artificial drying straws, and crushing the dried straws; drying red mud from Bayer process, and crushing the red mud into powder; then mixing the crushed straws and the powdery red mud by ball milling to prepare straw-red mud mixed powder; mixing water and biomass ash rich in alkali, and extracting the mixture to obtain a biomass ash extracting solution and dealkalized biomass ash solid residues; and uniformly mixing and stirring the straw-red mud mixed powder and the biomass ash extracting solution to obtain a pasty mixture, carrying out co-pyrolysis on the pasty mixture under a protective atmosphere, and washing magnetic straw biochar produced by co-pyrolysis with water until the magnetic straw biochar is neutral to obtain the red mud enhanced magnetic straw biochar material.

Abstract: Provided are a preparation method and use of a novel copper-metal organic framework (Cu-MOF)-derived magnetic Fe3O4@Cu/C composite for antibiotic degradation. The preparation method of the composite includes: compounding a novel Cu-MOF material obtained in a high-pressure reactor with Fe2O3, and then conducting calcination under an inert gas atmosphere to obtain the magnetic Fe3O4@Cu/C composite.

Abstract: A coupled medium-low temperature flue gas processing apparatus for fly ash washing includes a reactor and scraping rings. In the present disclosure, arranging the scraping rings can scrape the fly ash adhered to the inside of the reactor and bring the scraped fly ash into a mixing liquor to prevent the fly ash from adhering and accumulating, which not only results in the decrease of the fly ash content participating in the reaction, and the difficulty to react with water completely, but also the fly ash adhered to the inside of the reactor will form a thick object after mixing with the water, once the thick object is dried, the adhesive capacity thereof is greatly enhanced.

Abstract: A processing apparatus for removing dioxin in fly ash from domestic waste incineration by using a ball mill includes a grinder as well as a feeding body and a discharging body that are separately arranged at both ends of the grinder. In the present disclosure, an induction coil is electrified by arranging a heating body to generate an alternating magnetic field such that eddies generate on an inner wall of a grinding cylinder in the induction coil, the grinding cylinder is heated by the energy of these eddies, making a grinding ball thermally desorb and decompose a harmful component, that is, dioxin in the fly ash through a high temperature when grinding the fly ash from the domestic waste incineration since a temperature in the grinding cylinder reaches 300-500° C. during grinding.

Abstract: A processing apparatus for treating acid mine wastewater using an activated carbon-loaded microorganism includes a purifying container, a reducing body and an oxygen consumption body. By arranging a fuel gas body, a bottom of a cover disc is in threaded connection with a top of a top pipe after red phosphorus in a bottom cylinder is ignited, air in a feeding chamber enters into the bottom cylinder through gas ports, the oxygen in the air is consumed as the red phosphorus continues to burn, such that an interior of a reaction bin is in an oxygen-free environment, for ease of the microorganism performing the biological reduction reaction on the acid mine wastewater.

Abstract: A processing apparatus for treating acid mine wastewater using an activated carbon-loaded microorganism includes a purifying container, a reducing body and an oxygen consumption body. By arranging a fuel gas body, a bottom of a cover disc is in threaded connection with a top of a top pipe after red phosphorus in a bottom cylinder is ignited, air in a feeding chamber enters into the bottom cylinder through gas ports, the oxygen in the air is consumed as the red phosphorus continues to burn, such that an interior of a reaction bin is in an oxygen-free environment, for ease of the microorganism performing the biological reduction reaction on the acid mine wastewater.

Abstract: A biochemical sludge and physicochemical sludge separate sampling device for identifying attributes of sludge, includes a sludge extraction assembly, and a biochemical reaction tank and a physicochemical reaction tank which are respectively connected to the sludge extraction assembly through connection pipelines. The sludge extraction assembly includes an outer shell, a porous plate clamped to an inner bottom of the outer shell, and a sampling dish. A drain pipe is arranged at a lower end of the outer shell. The sampling dish is provided with a biochemical sludge cavity and a physicochemical sludge cavity. Filter cloth is arranged at inner bottoms of the biochemical sludge cavity and the physicochemical sludge cavity. Electric extrusion stems are arranged at an inner top of the outer shell; and the electric extrusion stems are provided with extrusion plug plates.

Abstract: A production device for preparing a building material using a fine particle silt in iron tailings includes an operation desk and a grinding device. During movement of edge plates, gears are located inside a side groove and keep meshing with toothed grooves, the edge plates will drive various gears to rotate along a same direction and drive grinding balls and connecting shafts to rotate while moving, the grinding balls will perform grinding treatment on the fine particle silt at the inner end of the grinding cabinet while rotating.

Abstract: A system for a sandy soil landfill solid waste polluted river channel, includes a ground water interception and diversion system and a river channel ecological remediation system. The ground water interception and diversion system includes a water intake well arranged upstream of ground water in a landfill area, a buffer pool communicated with the water intake well, and a wastewater treatment system communicated with the buffer pool. The water intake well, the buffer pool, and the wastewater treatment system are communicated through a wastewater pipe. An electric wastewater valve and a variable frequency water pump are arranged on the wastewater pipe in sequence. The river channel ecological remediation system includes an impermeable layer arranged at a bottom of a river channel and ecological bank protections arranged on both sides of a river channel slope.