55 results about "Sludge fermentation" patented technology

The invention relates to the technical field of organic fertilizer preparation and waste recycling, in particular to a food industrial park wastewater recycling and sludge resourceful treatment method which comprises the following steps: step 1, dynamically partitioning wastewater and cooperatively separating grease, monitoring the conductivity and turbidity of wastewater at water outlets of all workshops in real time, and dynamically dividing wastewater load grades according to monitored values; step 2, coupling biological treatment and carbon source circulation, inputting the effluent in the step 1 into an anaerobic reactor according to a real-time COD load ratio, adding a sludge glycolysis solution as a carbon source supplement, and dynamically adjusting the adding amount based on the ratio of volatile fatty acid to alkalinity; step 3, catalytic oxidation-membrane coupling advanced treatment: carrying out catalytic ozonation on aerobic effluent through sludge-based activated carbon, and adjusting the filling amount of a catalyst in a stepped manner along with characteristic parameters of organic matters in the effluent; 4, directional glycolysis of the sludge and closed-loop utilization of products. Through monitoring and dynamic adjustment, the problems of high energy consumption, low treatment efficiency, resource waste and the like in a traditional wastewater treatment method are effectively solved.

The invention relates to the technical field of environmental protection, and particularly discloses an efficient intensive sludge fermentation system which comprises a fermentation bin and a workshop, the workshop is divided into a plurality of layers, the topmost layer is a pretreatment workshop, the middle layers are culture workshops, hermetia illucens are cultured in the culture workshops, and the bottommost layer is an integrated workshop; the plurality of fermentation bins are uniformly distributed and tightly surround the periphery of the workshop, the plurality of fermentation bins work circularly, each fermentation bin performs independent fermentation, and a second discharge pipe and an air outlet pipe are arranged between the culture workshop and each fermentation bin. Sludge is placed in different fermentation bins one by one at intervals of one day to be subjected to closed and stacked fermentation, it can be guaranteed that fermented sludge is put into the culture workshop every day, and due to the fact that the multiple fermentation bins are evenly distributed and tightly surround the periphery of the workshop, the occupied space is small, and cost is low. And waste insect sand generated by culturing hermetia illucens in a culture workshop is utilized in fermentation of sludge, no system waste is generated and discharged, and the purposes of reducing cost and improving efficiency are achieved.

The utility model provides a sludge fermentation treatment agent adding assembly, and belongs to the technical field of sludge treatment equipment. The sludge fermentation treatment agent adding assembly comprises a bottom plate and a cleaning assembly. A pesticide barrel is installed on the surface of the bottom plate, a stirring piece is connected to the bottom of the pesticide barrel, the cleaning assembly comprises a supporting rod and a rotating rod, the rotating rod is rotatably installed on the upper surface of the supporting rod, a lifting plate is slidably arranged on the upper surface of the rotating rod, and a lead screw is connected to an output shaft of the first motor. The surface of the lead screw is sleeved with a scraping piece in a threaded mode, and the scraping piece is attached to the inner wall of the medicine adding pipe. According to the sludge fermentation treatment device disclosed by the utility model, the stirring piece is beneficial to mixing of a sludge fermentation treatment agent, the scraping piece is attached to the inner wall of the agent adding pipe through the cooperation of the supporting rod, the rotating rod and the lifting plate, and then the scraping piece moves downwards along the inner wall of the agent adding pipe through the cooperation of the first motor and the screw rod; and the possibility that the medicament is easy to adhere to the pipe wall of the dosing pipe is reduced.

The utility model discloses a small-scale test device for research on anaerobic fermentation of granular sludge. The small-scale test device comprises a fermentation bottle, a granular sludge feeding component, a granular sludge sampling component, an exhaust component and a stirring and mixing device, the granular sludge feeding and sampling component comprises a sample feeding pipe and a sampling pipe which penetrate through the sealing rubber plug of the fermentation bottle, the sample feeding pipe and the sampling pipe enter the fermentation liquid in the fermentation bottle, the feeding pipe is provided with a manual ball valve, and the sampling pipe is provided with a manual ball valve and a check valve. The exhaust component comprises an exhaust pipe, a manual ball valve and an air collecting bag, the exhaust port is connected with the air collecting bag, and a closed environment is kept. The stirring device comprises a stirring rotor and a magnetic stirrer which are arranged in the fermentation bottle, and fermentation liquor is kept uniform in the sampling process. According to the small-scale test device for the granular sludge anaerobic fermentation research, the difficulty in a granular sludge fermentation test can be solved, the device is simple to assemble, the sampling is uniform and sufficient, and the anaerobic environment is stable.

The invention discloses a method for enhancing release-conversion of phosphorus in anaerobic fermentation of excess sludge by humus. In order to relieve the current situation of phosphorus resource shortage and depletion at present, the invention aims to improve the residual sludge fermentation phosphorus release performance by adding humus exogenous to the anaerobic fermentation process. The method comprises the following steps: 1, pretreating the excess sludge with low-temperature heat and acid to strengthen the disintegration and lysing efficiency of extracellular polymeric substances of the excess sludge, so as to provide sufficient substrates for subsequent anaerobic fermentation acid production and improve the release efficiency of phosphorus; 2, the pretreated sludge is subjected to anaerobic fermentation, humus is added to improve the solubility of Fe-P (Fe < 3 + > is reduced into Fe < 2 + >), and the humus and metal ions are competitively complexed to improve the release efficiency of soluble phosphorus. Compared with the method for reinforcing the release-conversion of the phosphorus in the excess sludge by the humus, the method has the advantages of low cost, no secondary pollution risk and the like, can achieve an ideal phosphorus release-conversion effect, and has important significance for realizing the recovery and recycling of phosphorus resources in the sludge.

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.

A method and device for combining in-situ and ex-situ remediation of black and odorous water body sediments belongs to the field of sludge treatment technology. The device consists of an interconnected sludge suction pump, a sludge concentration tank, a sludge fermentation tank, a tailwater treatment tank, a clear water tank, a plate and frame filter press, a tailwater storage tank, and a chemical injector. The sediment is salvaged from the river channel, gravity concentrated, and fermented in an alkaline environment to fully release the pollutants in the sediment. After fermentation, the sediment is conditioned and dehydrated to complete the ex-situ remediation of the sediment. The tailwater generated by sediment concentration and dehydration is aerobically treated, and the purified tailwater is injected into the sediment. The nitrates, calcium ions, and iron ions in the purified tailwater are used to achieve in-situ remediation of the sediment. The deficiencies of each technology can be compensated for, reducing secondary pollution from ex-situ remediation of sediment, while also reducing the cost of chemicals for in-situ remediation.

The utility model belongs to the technical field of sludge treatment, and particularly relates to sludge aerobic fermentation equipment which comprises a fermentation tank body, an upper bearing seat is arranged in the middle of an upper cover at the top of the fermentation tank body, and an upper flange is arranged above the upper bearing seat; the stirring main shaft is hollow, a hot oxygen inlet is formed in the bottom of the stirring main shaft, stirring blades are arranged outside the stirring main shaft, and hot oxygen discharge holes are formed in the shaft wall; the upper end of the stirring spindle is connected with an upper bearing seat; a lower bearing seat connected with the lower end of the stirring main shaft is arranged in the middle of the base; the lower end of a thrust shaft in the thrust bearing seat bracket is connected with the upper flange through a universal coupling; a retaining pawl and a retaining ratchet wheel are arranged on the retaining pawl frame; the retaining ratchet wheel is fixedly connected with the thrust shaft; the ratchet wheel assembly is positioned below the lower bearing seat and comprises a ratchet wheel cover and a rocker arm; the end, away from the rotating spindle, of the rocker is connected with a hydraulic pushing mechanism. According to the sludge fermentation device, a heat source and oxygen can be uniformly distributed in a material, the sludge fermentation efficiency is effectively improved, and the sludge fermentation device has a relatively good market application prospect.

The present invention discloses a method for preparing sludge biomass fuel particles by mixing municipal sludge with sawdust, comprising: taking a municipal sludge sample and dividing it into I portions; adding each of the municipal sludge samples into I culture vessels; controlling the culture temperature of each of the culture vessels to correspond to I culture temperature intervals [T i‑L ,T i‑H ], in response to the colony density of the fermentation microorganisms in the culture vessel reaching a preset density, a sludge fermentation agent Y is obtained. i Put the municipal sludge into the fermentation tower, and add sawdust according to the water content of the municipal sludge to keep the water content of the municipal sludge at 45-60%; according to the temperature in the fermentation tower, inoculate the sludge fermentation agent Y i In response to the colony density of the fermentation microorganisms corresponding to the last added sludge fermentation agent reaching a preset requirement, the municipal sludge is removed and granulated to obtain biomass fuel pellets. The present invention improves the fermentation efficiency of municipal sludge, thereby improving the production efficiency of biomass fuel pellets.

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 present invention discloses a device and method for treating excess sludge, comprising an excess sludge nitrogen-phosphorus separation unit, a nitrification unit, an anaerobic ammonium oxidation unit, and an advanced treatment unit; the excess sludge undergoes anaerobically phosphorus release in the excess sludge nitrogen-phosphorus separation unit, and the phosphorus in the supernatant is reused for farmland as phosphate fertilizer; the dephosphorized excess sludge undergoes sludge fermentation in the excess sludge nitrogen-phosphorus separation unit; the sludge fermentation product enters the nitrification unit and the anaerobic ammonium oxidation unit for decarbonization and nitrogen removal; and after further purification in the advanced treatment unit, the tail water is returned to the natural water system. The present invention has the distinct characteristics of being ecologically friendly, economically efficient, and can achieve sludge reduction, stabilization, harmlessness, and resource utilization. Nitrogen-phosphorus separation and agricultural use of phosphorus prior to sludge fermentation not only help to simultaneously address the current increasing phosphorus demand and excess sludge treatment volume, but also reduce the phosphorus load of subsequent treatment units, facilitating the long-term stable operation of the device, and having practical significance and engineering value.

The invention belongs to the technical field of sewage sludge treatment and recycling, and provides a method and a device for producing a high-quality carbon source for short-cut denitrification by directional regulation and fermentation of sludge. The method comprises the following steps: (1) adding sludge with the solid content of 2-5% into a reaction tank of a device for producing short-cut denitrification by directional regulation and control of sludge fermentation, sealing the reaction tank, and aerating the sludge in the reaction tank under a stirring condition to realize directional fermentation; the aeration flow is controlled to be 6-120 L / (kg VSS.h), the gas introduced by aeration is air, and the pressure intensity of the reaction tank is controlled to be normal pressure; and (2) carrying out solid-liquid separation on the fermentation liquor obtained after directional fermentation in the step (1) to obtain a liquid phase which is the high-quality carbon source for short-cut denitrification and contains volatile fatty acid with acetic acid as a main component. According to the method, directional acetic acid production through sludge fermentation can be realized on the basis of not additionally adding medicaments, the medicament cost is reduced, the process operation is simplified, and the yield of volatile fatty acid and the acetic acid proportion during sludge fermentation are improved.

The invention provides a flowing capacitive deionization system and method for selectively recovering carbon, nitrogen and phosphorus in alkaline fermentation broth, and relates to the field of alkaline fermentation broth treatment.The flowing capacitive deionization system comprises a first collector plate, a first anion exchange membrane, a second anion exchange membrane, a cation exchange membrane and a second collector plate which are sequentially distributed in parallel from left to right; the area between the first collector plate and the second anion exchange membrane is an anode flow electrode chamber, the area between the cation exchange membrane and the second collector plate is a cathode flow electrode chamber, and the area between the second anion exchange membrane and the first anion exchange membrane is an acid liquid membrane chamber; through the innovative structure that the acid liquid membrane chamber is clamped by the two membranes, efficient selective separation and synchronous recycling of carbon, nitrogen and phosphorus in the sludge fermentation liquid are achieved for the first time, no chemical additive is added in the whole process, and an industrialized technical path is provided for solving the contradiction between carbon source shortage and nitrogen and phosphorus pollution of a sewage plant.

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.

The invention discloses a method for repairing a slag yard by in-situ fermentation of bagasse sludge, and relates to the technical field of slag yard repairing, the method comprises the following steps: pretreatment and mixing of raw materials: collecting fresh bagasse and sludge dehydrated by a plate-and-frame filter press; the bagasse and the sludge are cooperatively utilized, recycling of resources is achieved, the pressure of waste on the environment is greatly relieved, meanwhile, the remediation cost is greatly reduced, through the innovative sectional type in-situ fermentation technology, the temperature, humidity, oxygen and other key conditions are monitored in real time and precisely regulated and controlled through a high-precision sensor, and the remediation efficiency is improved. The microbial activity can be fully stimulated, bagasse and sludge fermentation and decomposition can be accelerated, efficient and rapid repairing of the slag field is achieved, the repairing period is shortened, in the whole repairing process, a large number of chemical agents are not used, the risk of secondary pollution is effectively reduced, and fermentation products can improve the soil structure of the slag field, improve fertility and further reduce the activity of heavy metal; and environment-friendly restoration is realized.

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.

An apparatus and method for synchronously removing nitrogen and recovering phosphorus from domestic sewage based on enhanced A₂N process by shortcut nitrification-anaerobic ammonium oxidation, belonging to the field of biological sewage treatment. Domestic sewage enters the A₂N-SBR system, undergoes anaerobic reaction in A₂-SBR, and denitrifying phosphorus-accumulating bacteria store extracellular carbon source as intracellular carbon source (PHA) and release phosphorus. After the anaerobic reaction, the supernatant enters N-SBR for shortcut nitrification; the effluent of the previous cycle of N-SBR enters A₂-SBR for anoxic anaerobic ammonium oxidation (Anammox) and denitrifying phosphorus removal (DPR); in N-SBR, nitrifying bacteria convert ammonia nitrogen into nitrite, and a small amount of remaining NH₄⁺-N provides substrates for Anammox and DPR in the anoxic section of A₂-SBR in the next cycle. The supernatant of sludge fermentation is regularly added to the influent of A₂-SBR, and Ca²⁺ is added in the anoxic section to promote the formation of crystals mainly composed of hydroxyapatite, effectively retaining anaerobic ammonium oxidation bacteria. The combination of DPR and biological induced crystallization phosphorus recovery realizes the deep nitrogen and phosphorus removal of domestic sewage while recovering phosphorus resources.

The application discloses a kind of municipal sewage treatment systems based on sludge activity regulation and control device optimization, belong to municipal sewage biological treatment technical field.The system includes biological treatment unit, sludge activity intelligent sorting device, sludge activity multistage conditioning tank unit, resource regeneration pond and intelligent central control platform.Biological treatment unit receives to be treated municipal sewage.Sludge activity intelligent sorting device carries out mud-water separation and activity classification to sludge mixture, and the high-activity sludge obtained enters sludge activity multistage conditioning tank unit, low-activity sludge enters resource regeneration pond, anaerobic fermentation is carried out in resource regeneration pond, and the sludge fermentation liquor produced is backflowed to sludge activity multistage conditioning tank unit by pipeline.Intelligent central control platform controls dynamic sludge pressure overflow ratio, sludge retention time, dissolved oxygen concentration, sludge fermentation liquor flow rate and other operating parameters by real-time monitoring, improves the denitrification efficiency of system and reduces operating energy consumption.

The invention discloses a device and a method for efficiently treating petrochemical wastewater and nitrate industrial wastewater by combining co-metabolism driven by sludge fermentation liquor with PD-Anammox, and belongs to the field of sewage treatment. Sludge fermentation liquor and petrochemical wastewater are jointly introduced into an anaerobic co-metabolism sequencing batch reactor, microorganisms are driven by rich small-molecular organic acid to perform co-metabolism, and toxic and refractory organic matters are degraded and mineralized; effluent of the reactor and nitrate industrial wastewater enter a PD-Anammox up-flow anaerobic fluidized bed, denitrifying bacteria fully utilize degradable organic matters to produce a nitrite substrate, anaerobic ammonium oxidation bacteria finish autotrophic nitrogen removal by utilizing nitrite, petrochemical wastewater and ammonia nitrogen in sludge fermentation liquor, and a byproduct nitrate nitrogen can be further utilized by the denitrifying bacteria. The method provided by the invention solves the problems of poor microbial toxicity resistance and lack of carbon sources in the traditional biological treatment process of petrochemical wastewater, and can synchronously realize high-efficiency and low-consumption removal of carbon and nitrogen pollutants in petrochemical wastewater, sludge fermentation liquor and nitrate industrial wastewater.

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 present application relates to the sewage treatment technical field, particularly to a kind of sludge fermentation driven biological denitrification process intensification method based on anammox bacteria ultra-high speed in-situ enrichment.The present application is aimed at sludge fermentation driven biological denitrification (SFBNR) process, through the operation strategy of " short-term HRT promotion + biological carrier dosing", in the in-situ fermentation-denitrification continuous stirred reactor (SIFD-CSTR) in the process, a kind of hydrogen-producing functional strain JABWBG01sp013360575 is cultivated directionally, high-energy H2 produced by the strain is used to expand the nitrogen metabolism electron pool of anaerobic ammonia oxidation bacteria (AnAOB), to accelerate carbon sequestration and its driven cell component synthesis, realize AnAOB ultra-high speed in-situ enrichment, to promote the effluent NH4 + Efficient removal, thereby optimizing the overall denitrification effect of SFBNR process.

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 invention discloses a method for preparing a high-concentration liquid carbon source based on primary sludge fermentation, which is characterized by comprising the following steps: adding soluble sugar into primary sludge to prepare a mixture with the C / N ratio of (15-25): 1, then sequentially carrying out micro-aerobic fermentation and anaerobic fermentation, taking clear liquor, carrying out adsorption reaction to remove nitrogen and phosphorus components, and then carrying out dehydration treatment to obtain the high-concentration liquid carbon source. The method provided by the invention can realize recycling of the primary sludge, and has the advantages of high fatty acid yield and high recycling efficiency of biomass resources in the sludge.

The utility model provides an anaerobic tank for sludge fermentation, which relates to the technical field of sludge fermentation tanks and comprises a fermentation tank, a clamping cover is arranged at the upper end of the fermentation tank, a rotating motor is arranged at the middle upper end of the clamping cover, a rotating cutter is connected to the lower end of the rotating motor, and a feeding component is arranged at the upper end of the clamping cover; the feeding assembly comprises a feeding frame, a sealing cover and a medicine discharging nozzle, the feeding frame is arranged at the upper end of the clamping cover, the sealing cover is installed on the outer surface of the feeding frame, and the medicine discharging nozzle is arranged at the bottom end of the feeding frame. The materials are uniformly discharged in the fermentation tank by utilizing the discharging nozzles for uniform distribution treatment, so that the working efficiency of the fermentation tank for uniformly feeding the materials is greatly improved, the frequency of stirring the materials by the rotary cutter is reduced, and the materials are fermented in the fermentation tank.

The invention relates to the technical field of purification, in particular to a method for advanced treatment of municipal sewage by adopting a sludge fermentation coupling OA process, and the method comprises the following steps: sequentially introducing municipal sewage in a raw water tank into a high-speed activated sludge tank and a nitrification tank of an aerobic zone, and removing organic matters and ammonia nitrogen to obtain a primary purification solution; introducing the primary purification liquid into a secondary sedimentation tank for precipitation separation to obtain supernate and bottom mud of the secondary sedimentation tank; introducing supernate of the secondary sedimentation tank into a regulating tank, mixing the supernate with fermentation liquor in the regulating tank, and performing optimization treatment to obtain mixed liquor of the regulating tank; introducing the mixed solution in the regulating tank into an anoxic zone to perform short-range and / or whole-range dissimilatory reduction of nitrate into ammonium coupled anaerobic ammonia oxidation reaction so as to remove nitrogen element; and introducing the mixed solution without the nitrogen element into a chemical phosphorus removal unit to remove the phosphorus element so as to obtain a purified solution.

The invention belongs to the technical field of biological treatment of sewage with few carbon sources, and particularly relates to a device and a method for enhancing nitrogen and phosphorus removal and sludge reduction of sewage by fermentation, the device comprises a mainstream sewage treatment system and a side flow return sludge fermentation system, the mainstream sewage treatment system comprises a sequencing batch reactor of a cyclic activated sludge process (CASS); a partition plate with water passing holes is arranged in the sequencing batch reactor, and the sequencing batch reactor is divided into a premixing area and a main reaction area by the partition plate with the water passing holes; the device has an efficient lateral flow enhancement effect, the lateral flow sludge treatment amount is small (only 3%-20% of lateral flow return sludge is treated), and the treatment time is short (the sludge fermentation time lt; in the fermentation process, chemicals are not required to be added, pH and heating are not required to be controlled, and the main flow nitrogen and phosphorus removal efficiency can be improved, the total nitrogen and total phosphorus of effluent can be reduced and an oligocarbon source (COD / TNlt) can be realized by only relying on anaerobic fermentation of the returned sludge at room temperature; and 8) the nitrogen and phosphorus removal treatment of the urban sewage reaches the standard, and the method has the characteristics of economy and high efficiency.

The invention discloses a device and a method for treating sludge digestion liquid by coupling short-cut nitrification / anaerobic ammonia oxidation-sludge in-situ fermentation with short-cut denitrification / anaerobic ammonia oxidation. Sludge digestion liquid firstly enters the short-cut nitrification coupling anaerobic ammonia oxidation reactor to be subjected to anoxic stirring, and residual nitrate nitrogen in the last period is removed through denitrification of organic matter in raw water; after the anoxic stirring is finished, aeration stirring is performed, ammonia nitrogen in the sewage is converted into nitrite nitrogen by short-cut nitrification, the generated nitrite nitrogen and the residual ammonia nitrogen in the sewage are subjected to anaerobic ammonia oxidation reaction to generate nitrate nitrogen, precipitation and drainage are performed after the reaction is finished, and wastewater containing nitrate nitrogen enters a middle water tank. Water in the middle water tank and a part of the sludge digestion liquid enter the sludge in-situ fermentation coupling short-cut denitrification / anaerobic ammonium oxidation reactor together, and deep denitrification is realized under the combined action of hydrolytic acidification bacteria, denitrifying bacteria and anaerobic ammonium oxidation bacteria in the granular sludge. The method does not need additional carbon sources, saves aeration energy consumption, and is low in sludge yield.

The invention provides dynamic bacteriostatic equipment for sludge treatment, which comprises a frame body and a storage bin mounted on the frame body, the storage bin comprises a shell inner layer, a shell middle layer and a shell outer layer, a plurality of connecting parts are arranged between the shell inner layer and the shell middle layer, and the shell inner layer and the shell middle layer are divided into a plurality of groups of air passages by the connecting parts. Multi-dimensional bacteriostasis is achieved through the synergistic effect of a low-temperature environment, a nitrogen environment and ultrasonic waves, the semiconductor chilling plate set, the temperature sensor and the PID temperature controller are matched, the temperature in the storage bin is controlled to be 4 + / -1 DEG C, protein synthesis of mesophilic bacteria is effectively inhibited, the reproduction rate of the mesophilic bacteria is reduced, nitrogen is sprayed out of micropores in the bin wall to form a dynamic gas film layer, a low-oxygen environment is created, and the low-oxygen environment is improved. And low-frequency ultrasonic waves generated by the ultrasonic transducer destroy a microbial biofilm structure and interfere flora aggregation by utilizing a cavitation effect, so that the sludge fermentation decay is comprehensively delayed, and the sludge storage quality is improved.