1645 results about "Denitrification" patented technology

The invention discloses a low-temperature sewage deep denitrification treatment method and system based on an AOA process, and relates to the technical field of sewage treatment.The method comprises the steps that multiple types of sensing units are arranged in an anoxic zone and an aerobic zone to obtain multi-zone characteristics, and a low-temperature denitrification collaborative state tensor is constructed through space-time decoupling and correlation analysis; and inputting a denitrification task target, a state tensor and an equipment state into a collaborative decision model, outputting a combined control instruction of gas-liquid distribution, a reflux ratio, aeration intensity and the like through attention fusion, and issuing the combined control instruction to a related unit so as to realize deep denitrification control under a low-temperature condition. The method solves the technical problems of low denitrification efficiency and poor stability caused by the fact that the existing AOA process cannot effectively identify and regulate the coupling denitrification dynamic relationship of multiple reaction intervals under the low-temperature condition, realizes accurate regulation and control of multi-zone denitrification power under the low-temperature condition through multi-zone cooperative control and refined parameter optimization, and improves the denitrification efficiency. The denitrification efficiency and the stability are improved.

The invention provides a low-carbon modular artificial wetland system and a carbon sink collaborative purification method thereof, and relates to the technical field of artificial wetlands, the low-carbon modular artificial wetland system comprises a modular box body, and a water inlet layer, a carbon sink layer and a purification layer which are sequentially arranged in the modular box body from top to bottom; the water inlet layer is used for filtering suspended matters through coarse sand; the carbon sequestration layer is used for adsorbing carbon dioxide through biochar and carbon sequestration microorganisms, and meanwhile, the carbon sequestration capacity is enhanced through the plant-microorganism synergistic effect; the purification layer is used for purifying a water body through an iron-based phosphorus removal material and a zeolite denitrification filler. The technical problems of low-carbon material selection, carbon sink potential excavation, renewable energy source coupling and greenhouse gas emission inhibition of an existing constructed wetland system are solved, the technical effects of efficient sewage purification and carbon emission reduction are achieved, and a carbon emission reduction closed loop of the whole life cycle is achieved.

The utility model provides a low-carbon high-efficiency biochemical system control system. The low-carbon high-efficiency biochemical system control system comprises an internal reflux control module, a carbon source adding module and a precise aeration module, the internal reflux control module is used for refluxing nitrate nitrogen required to be denitrified to the anoxic tank for denitrification; the carbon source adding module is used for giving the current required dosage through online nitrate nitrogen instruments arranged in an anoxic tank and an aeration tank according to dynamic nitrate nitrogen value comparison and variation trend comparison at the tail end of the anoxic tank; and the accurate aeration module reads the real-time numerical value of ammonia nitrogen at the tail end of the aeration tank, performs mean value calculation on the numerical value in each period, performs difference value calculation on the average value of ammonia nitrogen in the current period and the average value of ammonia nitrogen in the last period, and reaches the numerical value of dissolved oxygen through frequency adjustment of an aeration fan to run in a required operation interval. The control method of the low-carbon high-efficiency biochemical system aims to realize low-carbon high-efficiency accurate control of the biochemical system, aeration as required, addition of an external carbon source and control of internal reflux.

The invention relates to the technical field of sewage treatment, and particularly provides a method and a system for realizing beneficiation wastewater N, N-diethyldithiocarbamate-C-N-S synergistic oxidation-reduction coupling treatment by an MABR oxygen layering process. According to the method and the system, a time sequence dissolved oxygen (DO) dynamic regulation and control strategy is innovatively developed: through periodic / pulse type switching anaerobic-hypoxia-aerobic conditions, oxygenolysis and ammonification reaction of N, N '-diethyldithiocarbamate are intensified directionally, and toxicity inhibition of intermediate products on functional bacteria is relieved. Based on the strategy, the system can accurately utilize biological membrane oxygen gradient spatial distribution in a single MABR reactor to realize a cascade reaction of sulfur oxidation-ammonification-aerobic nitrification-anoxic denitrification of ethyl sulfur nitrogen; or aiming at high-concentration diethyldithiocarbamate (gt; 50 mg / L) is coupled with a front anaerobic reactor, and ammoniation detoxification and denitrification nitrogen removal are enhanced.

The utility model aims to provide the nitrogen and phosphorus removal filter with the ozone micro-ecological environment, which is used for removing nitrogen and phosphorus through microorganisms and treating sewage through ultraviolet sterilization. A water inlet is formed in the barrel body, and a water outlet is formed in the barrel body. The mechanical filtering module is arranged on the barrel body, is connected with the water inlet and is used for filtering and primarily treating the sewage; the ozone microorganism module is arranged between the mechanical filtering module and the barrel body and is communicated with the mechanical filtering module, an anaerobic zone, a facultative oxygen zone and an aerobic zone are formed in the ozone microorganism module, and nitrification and denitrification reactions are fully carried out for recirculating aquaculture and nitrogen and phosphorus removal treatment of aquaculture tail water; and the ultraviolet module is arranged on the outer side of the barrel body and is used for sterilizing and disinfecting the culture water or the culture tail water. The utility model is applied to the technical field of nitrogen and phosphorus removal filters.

The invention belongs to the technical field of sewage treatment, and particularly relates to an oxygen gradient self-coupling granular sludge partition reactor which comprises a reactor body, the reactor body is of a vertically-arranged tower structure, and an aeration system, a water distribution system, a partition assembly, a three-phase separator, a gas collection assembly, a water outlet assembly and a sludge discharge port are arranged in the reactor body. Wherein at least one layer of separation assembly is arranged, and the separation assembly divides an inner cavity of the reactor body into a first reaction function area and a second reaction function area which are connected in series up and down; the separation assembly comprises PET geotechnical cloth, and grating supporting plates are arranged on the upper side and the lower side of the PET geotechnical cloth. The functions of aeration, reaction, separation, water outlet and the like are integrated through a vertical tower type structure, high efficiency and energy conservation in the sewage treatment process are achieved, nitrification and denitrification reactions are synchronously completed in a single reactor by utilizing an oxygen gradient self-coupling mechanism in aerobic granular sludge, a traditional nitrification liquid internal reflux and sludge reflux system is not needed, and the cost is reduced. And the energy consumption and the operation cost are obviously reduced.

The utility model provides an algal-bacterial symbiosis synergistic denitrification reaction device based on anaerobic ammonia oxidation, and relates to the technical field of wastewater treatment. The device comprises a reactor and a plurality of biological ribbons arranged in the reactor, a water inlet and a water outlet are formed in the two ends of the reactor respectively, the biological ribbons are vertically distributed in the reactor in the water flow direction and divide the reactor into a plurality of reaction spaces, and the two ends of the tops of the biological ribbons are fixed to the side wall of the reactor; and the height of the biological ribbon is lower than that of the reactor. The anaerobic ammonia oxidation-phycomycete symbiotic system is introduced into the reactor containing the biological ribbons, low-energy-consumption and low-emission treatment of low-C / N urban domestic sewage is achieved, the biological ribbons are selected as a loading material of the reactor, the interior of the reactor is provided with rich pore structures, and the biological ribbons are loaded on the reactor. A large amount of biological attachment surface area is provided for growth and reproduction of algae and other microorganisms in water, and a large amount of attachment sites and powerful growth conditions are provided, so that the sewage treatment effect is improved.

The invention discloses a composite fiber woven net active microbial carrier for treating nitrogen-containing wastewater as well as a preparation method and application of the composite fiber woven net active microbial carrier. The active microbial carrier is formed by weaving titanium wires, rock wool wires, iron-carbon twisted wires and PLA wires, has high biocompatibility and high specific surface area, keeps high mechanical strength, can promote efficient biofilm formation of denitrification sludge, and can promote quick start of a reactor and improve the denitrification effect after successful biofilm formation. According to the application, the requirements of'plastic reduction and plastic forbidding 'are met, the traditional plastic biological filler is replaced, the technical problem that micro-plastic particles are released due to degradation in the use process of the filler is solved, the requirement of green development is met, and remarkable economic and ecological environment values are achieved. Iron wires and carbon fibers in the iron-carbon stranded wires form a primary battery in the reactor, controllable dissolution of iron ions is spontaneously accelerated, driving is not dependent on external potential, and the concept of low carbon and environmental protection is met; additional carbon source adding is reduced through the PLA filaments, and the PLA filaments are further matched with the low-carbon and environment-friendly concept.

The invention discloses a metal element doped MnO2 and MnFe oxide composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of flue gas desulfurization and denitrification. The preparation method comprises the following steps: dissolving potassium permanganate, divalent manganese salt and doped metal salt in water for reaction to prepare metal element doped MnO2; and mixing and reacting with a template agent, ferric salt and sodium salt, drying and roasting to obtain the final catalyst. The MnO2 electronic structure is modulated by doping metal elements, and the three-dimensional porous structure of the MnFe oxide is constructed by using the template agent, so that the catalyst has efficient adsorption and strong catalytic oxidation capacity, NO and SO2 can be synergistically removed at the same time, and the catalyst has desulfurization and denitrification activity in a wide temperature range of 30-300 DEG C, and is suitable for industrial production. And liquid ammonia does not need to be used in the purification process, so that the purification agent is high in safety and is particularly suitable for purification treatment under complex flue gas conditions in the non-electric industry.

The invention discloses an algae species with both efficient denitrification and high free ammonia tolerance and application thereof. The invention provides an inflatedfruit senna herb which is preserved in China General Microbiological Culture Collection Center (CGMCC) on December 11, 2024, and the preservation number of the inflatedfruit senna herb is CGMCC No.46280. The inflatedfruit senna herb has the advantages that the inflatedfruit senna herb is preserved in the China General Microbiological Culture Collection Center (CGMCC); the inflatedfruit senna provided by the invention has efficient assimilation removal capability on NO3 <->-N, NO2 <->-N and NH4 < + >-N, and has relatively strong tolerance on high-concentration free ammonia (FA). A bacterial-algae symbiotic system is constructed by the inflator and activated sludge, and is coupled with a dynamic membrane process, so that the denitrification efficiency of the nitrogen-containing wastewater can be remarkably improved, the addition of exogenous organic matters, the aeration energy consumption and the N2O emission are reduced, meanwhile, high-value microalgae biomass is obtained, and efficient, stable and resourceful treatment of the nitrogen-containing wastewater is realized.

The invention belongs to the technical field of petroleum refining, and relates to a high-purity hydrogen recovery process for improving denitrification efficiency based on a PSA (Pressure Swing Adsorption) device, which comprises the following steps: carrying out primary adsorption impurity removal after pretreatment and pressure regulation on raw material gas, carrying out gas-liquid separation, pretreatment and pressure regulation on the obtained hydrogen-rich gas, and then carrying out membrane separation; the generated hydrogen-rich permeated gas is subjected to pressure regulation and then is sequentially input into a second-stage PSA device and a third-stage PSA device for further adsorption and purification, and finally finished hydrogen with the purity not lower than 99.9% is obtained. The membrane separation technology is adopted for selective separation of hydrogen and nitrogen, the membrane separation unit is arranged at the outlet of the first-stage PSA device, nitrogen is removed from the source, meanwhile, desorbed gas of the third-stage PSA device and retention gas of the membrane separation unit are combined for combustion, nitrogen accumulation in the system is avoided, the nitrogen circulation amount in the system is reduced, and the energy consumption of the system is reduced. The hydrogen recovery rate can be effectively improved while the adsorption efficiency is improved, the process is simple, the investment cost is low, the implementation period is short, and remarkable economic benefits and process advantages are achieved.

The utility model provides an efficient sewage treatment system for high-calcium wastewater, which comprises a biological decalcification unit and a biochemical treatment unit, the bottom of a first anaerobic tank of the biological decalcification unit is communicated with the top of a first anoxic tank, the bottom of the first anoxic tank is communicated with a first aerobic tank, and the first aerobic tank is communicated with a first sedimentation tank; the bottom of a second anaerobic tank in the biochemical treatment unit is communicated with the top of a second anoxic tank, and the bottom of the second anoxic tank is communicated with a second aerobic tank; the first sedimentation tank is communicated with the upper part of the second anaerobic tank. The sewage treatment system is based on two-stage A2O, most of calcium ions in water are removed through first-stage A2O, decalcification treatment is carried out, a basis is provided for COD removal, denitrification and other biochemistry through second-stage A2O, the biological treatment effect of high-calcium wastewater is improved, meanwhile, sludge is screened and concentrated through the cyclone device, residual sludge is subjected to resourceful treatment, and the treatment effect of the high-calcium wastewater is improved. And the effects of reducing the cost, improving the efficiency and recycling resources are achieved.

The invention relates to the technical field of fermentation industrial wastewater treatment, and particularly discloses a white spirit production wastewater treatment process and system. The system comprises a pretreatment unit, an anaerobic treatment unit, a denitrification unit, a multi-stage biochemical treatment unit, an advanced treatment unit, a sludge treatment unit and a backwashing water recovery unit which are connected through a corrosion-resistant pipeline, a variable frequency pump body and a control valve group. The method comprises the following steps: homogenizing water quality and water quantity through an adjusting tank, adjusting the pH value through a neutralizing tank, pretreating through a microfilter and an air flotation device, sequentially feeding into a hydrolysis acidification tank and a two-stage UASB reactor to degrade organic matters, reducing nitrogen concentration through a denitrification unit, deeply degrading pollutants through a multi-stage biochemical system, and finally realizing up-to-standard discharge through magnetic coagulation phosphorus removal and decoloration treatment. The sludge is subjected to resource utilization after being concentrated and dehydrated, and backwashing water and filtrate are recycled and retreated. The system is high in treatment efficiency, low in operation cost, high in resource recovery rate, stable in effluent and suitable for wastewater treatment of various white spirit production enterprises.

The invention discloses an advanced organic wastewater treatment method and treatment device based on an advanced oxidation coupling coagulation denitrification method, and relates to the technical field of landfill leachate treatment, kitchen waste treatment, kitchen garbage treatment and the like, the treatment device comprises a coagulation tank unit, a flocculation tank unit, an air floatation and filter tank unit, an ozone catalysis unit and an activated carbon filter unit which are connected in sequence, the ozone generation unit and the tail gas decomposition unit are connected with the ozone catalysis unit. According to the invention, a traditional nanofiltration membrane advanced treatment process in the industry is replaced by an advanced treatment process of coagulation, flocculation, air floatation, filtration, ozone catalysis and activated carbon filtration, so that the generation of a concentrated solution is avoided; the defect that the biogas yield of an anaerobic digestion system is reduced due to the fact that the sulfate-containing concentrated solution flows back to the anaerobic digestion system of the landfill leachate treatment plant or the kitchen waste treatment plant is overcome, the load of a biogas desulfurization system of the landfill leachate treatment plant and the kitchen waste treatment plant is reduced, and the consumption cost of the concentrated solution is greatly reduced.

The utility model belongs to the technical field of biological denitrification of industrial aquaculture water, and particularly relates to a denitrification device suitable for an industrial aquaculture system. Comprising an aerobic nitrification zone, a carbon source zone, an aerobic denitrification zone and a suspended particle removal zone which are communicated in sequence, a filter material is arranged in the aerobic nitrification zone, and the aerobic nitrification zone is used for carrying out biological oxidation on aquaculture water to generate nitrate; the upper part of the carbon source region is filled with carbon sources; the aerobic denitrification area is used for reducing nitrate in the water body into nitrogen; the suspended particle removal area is used for removing suspended particles in the water body. A water inlet pipe is arranged at the bottom of one side wall of the aerobic nitrification area, an aerobic nitrification area overflow port is formed in the upper part of the other side wall of the aerobic nitrification area, and the internal space of the aerobic nitrification area is distributed in a shape; a water outlet pipe is arranged at the bottom of the side wall of the suspended particle removal area. According to the device, aerobic nitrification, aerobic denitrification and suspended particulate matter removal are organically integrated, intensification and modularization are realized, the device is simple in structure and convenient to operate, and the culture denitrification effect is effectively improved.

The invention relates to the field of sewage treatment, in particular to a method for recycling soybean protein wastewater resources. The soybean protein wastewater recycling method provided by the invention comprises the following steps: 1) mixing soybean protein wastewater, activated carbon and quaternary ammonium salt modified chitosan, stirring, standing and precipitating to obtain a precipitate turbid solution; 2) mixing the precipitate turbid liquid with a fermentation inoculant, carrying out anaerobic acidogenic fermentation, and carrying out centrifugal separation to obtain a carbon source stock solution; 3) heating and denitrifying the carbon source stock solution, mixing with sodium alginate, dissolving, and spray-drying to prepare a sodium alginate-carbon source microcapsule; and 4) preparing a degradable porous suspended filler from polylactic acid, filling the sodium alginate-carbon source microcapsule into pores of the degradable porous suspended filler, and sealing to obtain the slow-release carbon source suspended filler. The method provided by the invention can improve the current soybean protein wastewater utilization rate, reduce resource waste, and solve the problem of final direction of the soybean protein wastewater.

The invention relates to the technical field of sewage treatment, and discloses a low-carbon-nitrogen-ratio ammonia-nitrogen wastewater treatment method, which comprises the following steps: measuring the carbon source concentration, ammonia-nitrogen concentration, flow and temperature of wastewater, inputting the carbon source and ammonia-nitrogen concentration into a prediction model to obtain a microbial activity predicted value, and determining the carbon source dosage based on the difference between the predicted value and an activity threshold value; converting the carbon source feeding amount into a reference feeding rate, and performing compensation correction on the denitrification rate through a temperature correction function to obtain an initial carbon source feeding rate; taking the subsequently monitored nitrogen-containing pollutant concentration of the effluent of the denitrification area as a feedback signal, comparing the feedback signal with the target concentration, and iteratively adjusting the feeding rate. According to the method, accurate matching of the carbon source feeding amount and the microbial metabolism requirement is achieved, the problems of unstable denitrification efficiency and secondary pollution caused by inaccurate carbon source feeding in a traditional process are effectively solved, and the effluent quality guarantee capacity is remarkably improved.

The pure membrane MBBR sewage treatment system comprises an anoxic denitrification zone, an anaerobic ammonia oxidation zone, an aerobic oxidation zone, a high-density sedimentation zone, an MBBR biological filtration zone, a backwashing water tank and an equipment room, the anoxic denitrification region is used for carrying out amination reaction, organic matter hydrolysis reaction and denitrification reaction on the sewage and nitrate and nitrite in the anoxic denitrification region; the anaerobic ammonia oxidation zone is used for reacting the sewage with nitrite to generate nitrogen; the aerobic oxidation zone is used for promoting microorganisms to degrade organic matters in sewage and convert ammonia nitrogen; the high-density settling zone is used for separating muddy water in sewage; the MBBR biological filtration area is used for filtering suspended matters in the sewage; the backwashing water tank is used for providing backwashing make-up water for the MBBR biological filtration area; and the equipment room is used for placing disinfection equipment, a fan and a power distribution control system.

The invention relates to the technical field of biological denitrification, in particular to a nitrogen-doped carbon dot-based microbial electronic control denitrification system and application thereof. The system comprises electron donor microorganisms, electron acceptor microorganisms and nitrogen-doped carbon dots, the nitrogen-doped carbon dots serve as electron mediators outside cells, an efficient extracellular electron transfer network is constructed, and interspecific electron transfer resistance is reduced; meanwhile, the nitrogen-doped carbon dots can regulate and control intracellular electron transport chains and the energy metabolism process, the improvement of the reducing power and the energy level is promoted, and the metabolism mode optimization is realized. By cooperatively regulating and controlling generation, transmission and utilization of electrons under an extreme electron donor limited oligotrophic condition, the system disclosed by the invention can realize efficient denitrification, avoid nitrite accumulation, remarkably inhibit generation of nitrous oxide (N2O), reduce dependence on an external organic carbon source and an electron source, and improve the denitrification efficiency. And a new technical approach is provided for improving the deep denitrification efficiency under the low-carbon condition.

The invention relates to the technical field of sewage treatment equipment, and particularly discloses sludge granulation equipment, sewage biochemical treatment equipment and a sewage treatment processing line. The sludge optimization equipment is used for improving the performance of sludge for sewage treatment and comprises a main tank body, partition blocks are arranged in the main tank body to divide the main tank body into a contact chamber and a hollow chamber, and a circulating part is arranged on each partition block to allow the sludge to pass through; iron shavings are placed in the contact cavity, and the filling ratio of the iron shavings is 0.6-0.9. Sludge optimization equipment taking the iron shavings as a core can be connected into a sewage biochemical treatment process to improve the biochemical characteristics of the sludge in multiple aspects, so that the denitrification nitrogen removal capability of microorganisms in the sludge can be enhanced, the requirement of the microorganisms on an external carbon source is abandoned, the phosphorus removal effect of a whole set of system using an activated sludge method can be improved, and the economic benefit is increased. Meanwhile, aerobic granular sludge with better performance is formed in a continuous flow sewage treatment process, so that the sewage treatment effect is comprehensively improved finally.

This invention relates to the field of flue gas treatment technology. It discloses an integrated flue gas desulfurization, denitrification, and decarbonization method based on a hypergravity reactor. S1: Flue gas is pressurized by a booster fan and then enters a concentration and cooling tower for heat exchange and cooling. S31: If the flue gas detection device fails to meet the requirements, the flue gas enters the secondary thin-plate hypergravity treatment device connected in series via a series return gas branch for secondary treatment. S32: If the flue gas detection device meets the requirements, the flue gas enters the main flue gas emission path via the series return gas branch and the flue gas emission branch. The main flue gas emission path transmits the flue gas to the hypergravity decarbonization reactor. The secondary thin-plate hypergravity treatment device is ultra-thin and divided into multiple vertically distributed sections, ensuring that the grading is performed in the same or nearly identical space, reducing the height of the secondary thin-plate hypergravity treatment device and minimizing energy consumption during initial operation.

The invention relates to the technical field of sewage treatment, and particularly discloses a high-porosity slow-release microelement anti-mineralization sulfur autotrophic denitrification filter material and a preparation method thereof. The sulfur autotrophic denitrification filter material is of a core-shell structure, a complex of sulfur, volcanic rock micro powder and a curing fungicide is used as an inner core, and a hydrophobic polymer coating layer and a porous ceramic bonding layer are sequentially coated on the surface of the inner core; the hydrophobic polymer coating layer is a hydrophobic breathable composite film formed by crosslinking a polydimethylsiloxane prepolymer and calcium alginate. The volcanic rock natural trace elements are utilized to realize waste control by waste, surface mineralization is effectively prevented through the hydrophobic middle layer, the activity of the microbial inoculum is protected in combination with a low-temperature flexible sintering process, and the whole device has the advantages of high porosity, light weight, quick start, long service life, low backwashing energy consumption and the like. Compared with the prior art, the invention has remarkable innovativeness and creativity in the aspects of structural design, material selection and process integration.

The invention provides a temperature prediction and adjustment method for a low-temperature catalytic desulfurization and denitrification device based on deep learning, and belongs to the technical field of temperature prediction based on deep learning. The method comprises the following steps: firstly, acquiring nine types of multi-source time series data such as flue gas inlet parameters, ammonia injection rate, heating power and the like based on a physical decoupling idea, and constructing a temperature characteristic data set; secondly, designing a feature extraction module based on physical decoupling, and respectively modeling convective heat transfer, catalytic heat release and thermal inertia processes through three branch networks; thirdly, constructing a space-time decoding prediction module, fusing multi-physical process characteristics and predicting a future temperature field; and finally, designing a multi-stage risk early warning and intelligent adjusting module, and generating a control instruction in combination with gradient optimization to realize temperature regulation and control. According to the method, the temperature prediction precision and the physical interpretability are improved, advanced risk prediction and adjustment are realized, and the engineering applicability is high.

The invention relates to a preparation method of ultralow-carbon ultralow-sulfur low-nitrogen steel, and belongs to the technical field of ferrous metallurgy. The method comprises the following steps: smelting a raw material containing waste steel in an electric furnace to obtain first molten steel; the first molten steel is subjected to sectional type LF refining, and second molten steel with the preset sulfur content is obtained; wherein the sectional type LF refining comprises LF refining of a light desulfurization section, a slagging-off section and a deep desulfurization section for spraying calcium oxide powder which are arranged in sequence, and the temperature of the first molten steel in the light desulfurization section is controlled; and the second molten steel is subjected to RH vacuum smelting, decarburization and denitrification are conducted, oxygen blowing operation is conducted in the RH vacuum smelting process, and the ultralow-carbon ultralow-sulfur low-nitrogen molten steel is obtained. The ultralow-carbon ultralow-sulfur low-nitrogen molten steel is prepared from the following components in percentage by mass: less than 20 ppm of oxygen, less than 0.0030% of nitrogen, less than 0.0030% of sulfur and less than 0.0020% of carbon.

The invention provides a water quality fingerprint identification and feed-forward addition control method and system, and the method comprises the steps: obtaining a UV254 absorption value and tyrosine-like and tryptophan-like fluorescence peak signal intensity, and carrying out data fusion preprocessing to generate inflow water quality characteristic fingerprint data; through a preset UV254-BOD / COD prediction model and a fluorescence characteristic ratio correction model, outputting a predicted BOD / COD ratio and an effective carbon content; calculating the theoretical carbon source quantity according to a denitrification theoretical model by combining the real-time water inlet flow and the total nitrogen concentration, deducting the effective carbon content to obtain the external carbon source demand quantity, and outputting a carbon source adding quantity predicted value after the time sequence is adjusted; the predicted value is used as a feedforward control signal, effluent total nitrogen monitoring data is used as a feedback control signal, a final control quantity is obtained through a compound control algorithm, and the final control quantity is converted into an operation instruction of the carbon source adding device and executed. According to the invention, the biodegradability is evaluated by rapidly detecting the water quality characteristics of inlet water, the carbon source demand is calculated, and the accurate addition of the carbon source is realized by adopting a feedforward-feedback composite control strategy.

The invention relates to an electrochemistry-assisted high-phosphorus-removal sewage treatment device and a treatment method, the electrochemistry-assisted high-phosphorus-removal sewage treatment device is provided with a biochemical pool, a secondary sedimentation pool located behind the biochemical pool, an electrochemical pool located behind the secondary sedimentation pool and a final sedimentation pool located behind the electrochemical pool, the electrochemical pool is internally provided with an electrode assembly, the electrode assembly releases iron ions after being electrified, and the biochemical pool adopts an A2O process; comprising an anaerobic tank, an anoxic tank and an aerobic tank which are sequentially connected, both the aerobic tank and the electrochemical tank are provided with aerators, the final sedimentation tank is provided with an active liquid backflow pipeline, and clarified liquid in the final sedimentation tank flows back to the anaerobic tank and the anoxic tank so as to form and maintain the concentration of iron ions in the biochemical tank. The method is suitable for automatic operation, is beneficial to reduction of manpower and material resources, reduction of medicament input and a new treatment process technology for enabling the sewage quality to reach the standard, can efficiently utilize iron ions released by the electrode through cooperation of a plurality of treatment procedures, can consider main control indexes of total phosphorus, ammonia nitrogen, total nitrogen, COD and the like, and realizes efficient nitrogen and phosphorus removal.

The utility model relates to the technical field of organic wastewater treatment, and discloses a magnesium-carbon primary battery reaction tank which comprises a reaction tank, a water inlet pipe is arranged inside the left side of the reaction tank, a water outlet pipe is arranged inside the right side of the reaction tank, and a first slag discharge tank and a second slag discharge tank are arranged inside the upper side of the reaction tank. A negative plate magnesium plate and a positive plate carbon plate are arranged in the reaction tank, a sludge scraper is arranged in the reaction tank, and the bottom end of the water inlet pipe is fixedly connected with a sludge accumulation hopper. According to the utility model, magnesium ions react with ammonia nitrogen and phosphate in the wastewater to generate magnesium ammonium phosphate precipitates, so that multiple purposes are realized, the content of hydrogen ions in the wastewater is reduced, the acidity of the wastewater is relieved, the content of ammonia nitrogen and phosphate ions is directly reduced, and the production cost is reduced. The burden of nitrification, denitrification and biochemical phosphorus removal of a subsequent biochemical system is relieved, and meanwhile, the dosage of phosphorus removal in deep treatment is reduced.

The invention relates to a composite carbon source and application thereof in sewage denitrification nitrogen removal, and belongs to the technical field of sewage treatment.The composite carbon source is obtained by forming a gel network through polyvinyl alcohol and sodium alginate, then crosslinking the gel network with calcium ions in calcium chloride to form a three-dimensional framework, and wrapping modified composite powder and polylactic acid in the three-dimensional framework. The three-dimensional skeleton can provide certain mechanical strength, so that the internal carbon source can resist water flow scouring, the porous structure can also enable the internal carbon source to be slowly released, more pores are formed after Na-montmorillonite and iron-carbon powder are compounded, the loading rate of flaky nano-hydroxyapatite on the montmorillonite intercalated iron-carbon powder is further improved, and the adsorption capacity of the montmorillonite intercalated iron-carbon powder is improved. Hydroxyl groups in the flaky nano-hydroxyapatite can form hydrogen bonds with Na-montmorillonite and hydroxyl groups on a three-dimensional skeleton, the interface bonding force is improved, the mechanical strength of the composite carbon source is further improved, polylactic acid serves as a slow-release carbon source and is gradually hydrolyzed under the action of microorganisms, and the release period of the composite carbon source under continuous impact of high-speed water flow is prolonged.

The device comprises a pretreatment unit and a PLC (Programmable Logic Controller), a denitrification reaction unit is arranged on one side of the pretreatment unit, and a deep denitrification unit is arranged on one side of the denitrification reaction unit. According to the utility model, the biogas slurry is flocculated through the flocculation tank, flocculate can be stood and settled through the settling tank, so that part of SS and COD can be removed, the biogas slurry sequentially passes through the three-phase separator, the carrier and the activated sludge to react, primary denitrification is realized, the denitrified biogas slurry can circulate in the reaction tank through the cooperation of the spray header and the transmission unit, and the denitrification effect is improved. The biogas slurry is fully reacted through the composite filler, so that deep denitrification is achieved, by adopting the activated sludge required by anaerobic ammonia oxidation, the carrier adsorbed with the denitrification biological strain and the composite filler, low-carbon-nitrogen-ratio wastewater can be denitrified under the condition that a carbon source does not need to be added, so that the project wastewater can be discharged up to the standard, and the wastewater can be recycled. And the operation cost of wastewater treatment can be saved.

The invention provides a flue gas desulfurization and denitrification ultra-low emission DCS control system, belongs to the technical field of flue gas purification, and solves the technical problems that an existing desulfurization and denitrification DCS control system cannot realize deep synergy of desulfurization and denitrification and cannot perform ultra-low emission with accurate prediction and efficient response. The system comprises a boiler, an SCR denitration reactor connected with a flue gas outlet of the boiler, and an air pre-heater fixedly mounted at an outlet of the SCR denitration reactor, wherein an outlet of the air pre-heater is fixedly connected with a dust remover. According to the invention, through the arrangement of the data acquisition assembly and under the action of the collaborative optimization assembly, the system realizes an ammonia escape feedforward-compensation mechanism, the negative coupling between the denitration control unit and the desulfurization control unit is broken, the blockage of ammonium bisulfate is effectively prevented, the reliability of the desulfurization control unit is improved, and the service life of the desulfurization control unit is prolonged. Data acquisition, working condition identification, prediction and energy efficiency optimization are integrated on a unified DCS platform, and closed-loop intelligent control from sensing to decision making to execution is realized.