15 results about "Sludge fermentation" patented technology

The resource utilization type sewage treatment equipment comprises a box body internally provided with a containing cavity, the box body is provided with a water inlet and a water outlet, three partition plates are arranged in the containing cavity at intervals, and the containing cavity is divided into a primary sedimentation tank, an anaerobic fermentation tank, a sludge fermentation tank and a reuse water storage tank which are sequentially communicated. According to the utility model, the accommodating cavity is divided into the primary sedimentation tank, the anaerobic fermentation tank, the sludge fermentation tank and the recycled water storage tank which are sequentially communicated through the three partition plates, large-particle impurities in sewage are subjected to hydrolytic acidification and sedimentation in the unit through the primary sedimentation tank, and then microorganism-attachable suspended filler is added through the anaerobic fermentation tank; the acidified and hydrolyzed sewage is deeply fermented and decomposed by anaerobic microorganisms in the area and is further purified. And the sludge fermentation tank is divided into an anaerobic sludge fermentation zone, a three-dimensional filter material microbial reaction zone, a microporous ceramsite adsorption zone and gravel filtration plant absorption from bottom to top, so that the ultimate purification of water quality is achieved.

The utility model provides a sludge aerobic fermentation bin, which relates to the technical field of sludge aerobic fermentation, and comprises a sludge fermentation bin body, a bin top cover plate is fastened and fixed on the upper end surface of the sludge fermentation bin body, the middle part of the bin top cover plate is movably connected with a limiting turntable, the outer surface of the limiting turntable is provided with a bull gear, and the bull gear is meshed with the bull gear. A first motor is connected to the right side of the large gear through a small gear, a lifting frame is connected to the upper end of the limiting rotary disc through an electric push rod, a transmission rod is connected to the left side of the lifting frame through a bearing, spiral mud conveying blades are fixed to the surface of the transmission rod, and a second motor is connected to the right end of the transmission rod through a transmission wheel and a transmission belt. A fixing shaft is welded to the center of the lower surface of the limiting rotary disc, and stirring blades are installed on the surface of the fixing shaft at equal intervals. The utility model solves the problem that in the prior art, sludge at the center in the fermentation bin is difficult to turn towards the outer end by rotating stirring blades, so that the temperature in the bin is not well controlled and the fermentation effect is influenced.

The utility model relates to the technical field of sludge fermentation, in particular to a sludge-water separation device for activated sludge fermentation, which comprises a conical barrel and is characterized in that the upper end of the conical barrel is fixedly connected with a barrel cover, and the lower end of the barrel cover is rotatably provided with a rotating rod through a driving part; a plurality of funnels are arranged on the outer wall of the rotating rod from bottom to top in a linear array mode through connecting pieces, the lower ends of the funnels fixedly communicate with round pipes, a stirring piece is arranged on the outer wall of one round pipe, and a round rod is arranged at the position, close to the edge of one side, of the lower end of the barrel cover through an elastic mechanism; a plurality of scraping plates are fixedly connected to the front portion of the outer wall of the round rod from top to bottom in a linear array mode, a limiting piece is arranged between the round rod and the barrel cover, and a feeding port fixedly communicates with the position, close to the edge of the front portion, of the upper end of the barrel cover. According to the settling separation device, the settling separation efficiency is guaranteed, the size of the settling separation device is reduced, and the problem of large occupied space is solved.

The invention relates to the technical field of tailing treatment, and particularly discloses a tailing composite modifier for acid soil treatment and a preparation method thereof.The tailing composite modifier is prepared from, by weight, 30-60 parts of alkaline conditioning materials, 20-50 parts of organic matter materials, 10-30 parts of mineral adsorption materials, 0.5-5 parts of microbial agents and 10 parts of tailing powder. The alkaline conditioning material is selected from one or more of quick lime, slaked lime, calcium carbonate, dolomite powder, steel slag, carbide slag and red mud, and the organic matter material is selected from one or more of humic acid, weathered coal, decomposed straw, decomposed livestock and poultry manure, biochar and organic sludge fermentation products. The mineral adsorption material is selected from one or more of bentonite, sepiolite, zeolite, vermiculite, attapulgite and ardealite. According to the tailing composite modifier for acidic soil treatment and the preparation method of the tailing composite modifier, efficient, stable and long-acting ecological restoration can be carried out on acidic soil.

The present application belongs to the field of oligocarbon source sewage biological treatment technology, in particular to a device and method for fermentation enhanced sewage denitrification and phosphorus removal and sludge reduction, comprising a main stream sewage treatment system and a side stream sludge fermentation system, wherein the main stream sewage treatment system comprises a sequencing batch reactor of cyclic activated sludge method (CASS); a partition plate with water passing holes is arranged in the sequencing batch reactor, and the sequencing batch reactor is divided into a pre-mixing zone and a main reaction zone by the partition plate with water passing holes; the device has a high-efficiency side stream enhancement effect, the side stream sludge treatment capacity is small (only 3% to 20% of the side stream flow rate is used to treat the sludge), and the treatment time is short (the sludge fermentation time is less than 96 h); no chemicals need to be added, and pH and heating need not be controlled during the fermentation process; only anaerobic fermentation of the refluxed sludge at room temperature can improve the main stream denitrification and phosphorus removal efficiency, reduce the total nitrogen and total phosphorus in the effluent, realize the denitrification and phosphorus removal treatment of oligocarbon source (COD / TN<8) municipal sewage to meet the standards, and has the characteristics of economy and high efficiency.

This invention discloses an apparatus and method for achieving deep nitrogen removal and phosphorus recovery through dual short-range coupled anammox fermentation using in-situ sludge fermentation. First, calcium chloride solution is added to the anammox reactor at the rear end of a two-stage PNA process to form recoverable phosphorus crystals such as Ca-P precipitates. Anaerobic ammonia oxidizing bacteria attach to the surface of the precipitates, thereby enriching and retaining them within the anammox reactor. During the continuous formation of anaerobic ammonia oxidizing particles, unfermented waste activated sludge is added to the PNA process. The slow hydrolysis and acidification of the waste activated sludge provide a carbon source for the short-range denitrifying bacteria, completing the transformation from single-stage PNA autotrophic nitrogen removal to dual short-range coupled anammox synergistic nitrogen removal. In this invention, the anaerobic ammonia oxidizing bacteria in the granular sludge after operation can reach 12%, 73% of the sludge exhibits a particle size greater than 200 μm, and the total nitrogen removal rate remains above 90%, with most phosphorus existing in the recoverable form of Ca-P crystals.

The utility model relates to the technical field of sludge fermentation processing, and particularly discloses a sludge aerobic fermentation device capable of deeply dewatering and increasing heat value, which comprises a fermentation tank, a feeding hopper is fixedly mounted on the ground on one side of the fermentation tank, and a driving motor is fixedly mounted on the outer surface of one side of the feeding hopper. A water containing disc is fixedly installed on the outer surface of one side of the feeding hopper, and a separation barrel is fixedly installed on the outer surface of the side, away from the driving motor, of the feeding hopper. According to the sludge aerobic fermentation device capable of deeply dewatering and increasing the calorific value, sludge can be stored through the feeding hopper, a large amount of sludge can be rotated and conveyed through the spiral conveying extrusion blade driven by the rotation of the driving motor, and the sludge can be continuously fed into the separation barrel to be extruded and separated; the sludge can be extruded and compressed to remove a large amount of water in the sludge, so that the reduction of the fermentation quality caused by overhigh water content during the subsequent fermentation of the sludge is reduced.

The utility model discloses a sludge fermentation extrusion forming machine for red brick processing, which relates to the technical field of sludge treatment and comprises a crushing box and a moving platform, a driving mechanism is mounted on the inner side of one end of the crushing box, two crushing rollers are symmetrically and rotatably connected to the inner side of the other end of the crushing box, and a screen is fixedly connected to the inner side of the crushing box. According to the sludge crushing device, the crushing rollers are driven to synchronously and reversely rotate, it is ensured that sludge is fully crushed, particles are uniform, large materials are prevented from influencing subsequent processing, the screen further screens the sludge, impurities are removed, the purity is improved, and the subsequent extrusion forming quality is optimized; the flow guide plate guides the screened sludge to smoothly flow to the discharging port, material accumulation is prevented, the conveying efficiency is improved, finally, the forming mold and the extrusion plate work cooperatively, it is ensured that the sludge is shaped and extruded, products stable in structure and uniform in shape are formed, and the finished product quality and the production stability are improved.

The application discloses an energy-saving and environment-friendly sludge fermentation deodorization device and process, and belongs to the technical field of sludge treatment. The energy-saving and environment-friendly sludge fermentation deodorization device and process comprise a shell, a heat exchange pipe is arranged around the first conveying pipe, the heat exchange pipe is arranged in the shell, the heat exchange pipe is filled with a heat-conducting medium, and the heat-conducting medium is used for absorbing the heat of fermentation materials and transferring the heat to the gas in the first conveying pipe when the temperature of the fermentation materials is higher than the temperature of the gas in the first conveying pipe. The application solves the problem that the biological heat generated by materials is directly discharged with tail gas in the existing fermentation device, and energy is wasted. The heat exchange pipe is arranged around the first conveying pipe in the shell, the heat-conducting medium is filled in the heat exchange pipe, the heat absorption and heat release characteristics of the heat-conducting medium are utilized, the heat-conducting medium is heated, the heated heat-conducting medium releases heat to the fermentation materials through the heat exchange pipe, and the treatment efficiency of solid waste is improved.

The invention discloses a sludge fermentation acid production and resource extraction system which comprises a fermentation reactor, an acidification promotion mechanism, a separation mechanism and a recovery mechanism, the fermentation reactor is sequentially provided with a pretreatment area, a fermentation area and a post-treatment area from top to bottom, and a stirring assembly and a gas distributor are arranged in the fermentation reactor; a feed port and an exhaust port are formed in the top of the reactor, a discharge port and an acidizing fluid inlet are formed in the bottom of the reactor, the acidification promoting mechanism comprises an acidizing fluid injection pipe and an acidizing fluid circulation loop, the acidizing fluid injection pipe is spirally arranged in the fermentation reactor, and the acidizing fluid circulation loop is arranged in the fermentation reactor. The acidizing fluid circulation loop is communicated with the acidizing fluid injection pipe, a pump body is arranged on the acidizing fluid circulation loop, the pump body is communicated with the acidizing fluid inlet, the separation mechanism comprises a primary filter and a secondary ion exchange column, the primary filter is connected with the discharge port, and the secondary ion exchange column is connected with the acidizing fluid injection pipe. The secondary ion exchange column is communicated with the primary filter, the recovery mechanism comprises a heat exchanger and a gas storage tank, and the heat exchanger is respectively connected with the exhaust port and the gas storage tank through pipelines. The sludge fermentation acid production and resource extraction system provided by the invention has the advantages of low energy consumption and deep resource recovery.

The utility model discloses a double-port type sludge fermentation tank. Comprising a frame body and a fermentation tank body fixed on the frame body, a stirring shaft with stirring blades is transversely arranged in an inner cavity of the fermentation tank body in a penetrating mode, the frame body is divided into two parts, and each frame body is provided with a driving mechanism capable of driving the stirring shaft to rotate in the inner cavity of the fermentation tank body. The top and the bottom of the fermentation tank body are respectively provided with a group of opening and closing mechanisms to form a double-port structure for automatically opening and closing a sludge inlet and a sludge outlet of the tank body. According to the double-port type sludge fermentation tank, the opening and closing mechanisms are respectively arranged at the top and the bottom of the fermentation tank body, so that a double-port structure is formed. Compared with a traditional single-port fermentation tank, the sludge can be input and output respectively without rotating the tank body, the problem that the sludge is difficult to output in a single-port structure is avoided, and the material loading and unloading time is greatly shortened.

The utility model discloses environment-friendly sewage treatment equipment which comprises a water inlet, a grating fixedly connected to the lower surface of the water inlet, a water storage chamber fixedly connected to the lower surface of the water inlet, a mud scraping plate movably connected to the inner surface of the water storage chamber, and a filter plate fixedly connected to the inner surface of the water storage chamber. The side surface of the water storage chamber is fixedly connected with a sludge discharge port, and the side surface of the water storage chamber is fixedly connected with an incinerator; the upper surface of the sludge fermentation barrel is fixedly connected with a stirring transmission box, the side surface of the sludge fermentation barrel is movably connected with a drying conveyor belt, and the upper surface of the drying conveyor belt is fixedly connected with a drying chamber. Through the structure, the environment-friendly treatment of sewage and the recycling of resources are realized, the pollution of sludge to the environment is effectively reduced, the total volume of wastes is greatly reduced, harmful substances are decomposed, the harm to the environment is reduced, and the sewage treatment efficiency is improved.

The application discloses a device and method for realizing denitrification of AOA process based on super-long anoxic retention time, and belongs to the field of sewage biological treatment. The anoxic retention time is regarded as super-long anoxic retention time when the anoxic retention time is 16 hours or above. The method is to store part of organic matters in the influent as internal carbon source in an anaerobic stage, then nitrite produced by short-cut nitrification in an aerobic stage enters an anoxic stage, then under the condition of super-long anoxic reaction time, external carbon source is used for external denitrification by external denitrifying bacteria, and then internal carbon source stored by internal denitrifying bacteria is used for internal denitrification to realize denitrification. Due to the super-long anoxic reaction time, sludge fermentation may occur in the system, and small-molecule organic matters produced by fermentation can also be used for denitrification, so that multi-path denitrification is realized to ensure deep denitrification under the condition of long anoxic operation time. The application reduces the carbon source demand for sewage denitrification, and can realize efficient and energy-saving nitrogen removal of low C / N domestic sewage.

The utility model relates to the field of oily wastewater treatment equipment, and discloses an oily wastewater sludge fermentation device which comprises a box body, a top cover is arranged at the top of the box body, and a plurality of layers of stirring mechanisms are arranged in the box body and at the top of the top cover; the multi-layer stirring mechanism comprises two fixing discs, a motor, three second gears and a fixing column, the two fixing discs are fixedly connected to the upper side and the lower side of the interior of the top cover, rack discs are fixedly connected to the interiors of the two fixing discs, and a protection box is fixedly connected to the upper side wall of the top fixing disc. And the bottom wall of the motor is fixedly connected to the inner bottom wall of the protection box. The multi-layer stirring mechanism is arranged, so that the problems that the fermentation reaction is unbalanced and the fermentation effect is influenced can be solved, and the stirring rods are fixedly connected to the outer sides of the bottom ends of the first connecting rods, so that the transmission efficiency of oxygen from a gas phase to a liquid phase is effectively improved, and sufficient oxygen for metabolic activity of microorganisms is ensured.

This invention provides a carbon capture and phosphorus removal apparatus and a carbon capture and phosphorus removal method for wastewater treatment. [Solution] The apparatus comprises a wastewater tank 1, an SBR reactor 2 communicating with the wastewater tank, a denitrification reactor 3 communicating with a drain pipe in the middle of the SBR reactor, and an anaerobic digester 4 communicating with a sludge discharge pipe at the bottom of the SBR reactor. A biochar sludge removal device 6 is provided on the anaerobic digester side. The method includes the steps of S1, water injection and stirring, S2, SBR treatment, S3, circulation, S4, sludge fermentation, and S5, magnetic biochar recovery. In this invention, magnetic biochar is introduced into a high-load contact-stabilized SBR reactor to synchronously promote the adsorption of organic carbon and phosphorus in the wastewater, further enhancing the capture effect of dissolved organic matter, promoting the adsorption of organic carbon and phosphorus in the wastewater, and ensuring a stable and efficient carbon capture and phosphorus removal effect.