279results about How to "Carbon saving" patented technology

The invention discloses a system and method for treating municipal sewage through short-cut denitrification-anaerobic ammonia oxidation after short-cut nitrification-anaerobic ammonia oxidation and belongs to the field of sewage biological treatment. The system comprises a raw water tank, an organic matter removal and dephosphorization SBR reactor, a short-cut nitrification SBR reactor, an anaerobic ammonia oxidation granular sludge UASB reactor, a second regulating water tank and a short-cut denitrification-anaerobic ammonia oxidation UASB reactor. All functional floras are subjected to advantageous culture in different reactors according to respective growth characteristics, so that a sludge age contradiction between denitrification and dephosphorization is solved, and stability of the treatment system is enhanced; real-time control is applied to the short-cut nitrification SBR reactor to solve the problem that short-cut nitrification with a low ammonia and nitrogen level is hard to maintain stably; water discharged from the short-cut nitrification reactor and water discharged from the organic matter removal reactor are mixed to solve the problem that continuous flow half short-cut nitrification is hard to maintain; short-cut denitrification-anaerobic ammonia oxidation is used for further treatment of water discharged from the anaerobic ammonia oxidation reactor to solve the problem that nitrate nitrogen is generated during anaerobic ammonia oxidation.

The invention discloses a SBR alternant aerobic/anaerobic technology for biological denitrification and real time control device and method thereof which consists of, dividing the waste water to be treated into three portions, loading each portion into a reactor, alternatively carrying out the operating mode of aerobic aeration and anoxybiotic agitating under real time procedure control, so as to realize the organics degradation and nitrogen-containing compound removal.

The invention provides a process for treating domestic sewage with low CN (Carbon-Nitrogen) ratio by use of an anaerobic/aerobic SNDPR (Simultaneous Nitrification and Denitrification Phosphorus Removal) system capable of enriching phosphorus-accumulating bacteria and belongs to the field of biological sewage treatment. After the domestic sewage enters into an SNDPR SBR (Sequencing Batch Reactor), delayed anoxic/anaerobic stirring is carried out firstly, nitrogen removal by denitrification is performed on NO3<-1>-N and NO2<-1>-N left in last cycle by use of denitrifying bacteria and by utilizing organic carbon sources in the sewage, the anaerobic phosphorus release is realized by use of the phosphorus-accumulating bacteria and by utilizing the organic carbon sources in the sewage, and stored substances are synthesized in the cells of the phosphorus-accumulating bacteria. Due to delayed anaerobic treatment, after PAOs phosphorus release is finished, the denitrifying flora in the system is still capable of taking full advantage of organic matters in the sewage and storing the organic matters as an internal carbon source. Hereafter, aerobic aeration stirring is performed; as the concentration of dissolved oxygen is controlled, endogenous SNDPR of the denitrifying flora can be realized while phosphorus absorption of the phosphorus-accumulating bacteria is guaranteed. The method process for treating the domestic sewage with low CN ratio by use of the anaerobic/aerobic SNDPR system capable of enriching phosphorus-accumulating bacteria has the advantages that deep nitrogen and phosphorus removal of the sewage with low CN ratio is realized in one reactor, the process is simple, no external carbon source needs to be added, and the oxygen consumption and the energy consumption are reduced.

The invention discloses a device which can realize the shortcut nitrification of sludge-digestion liquid through the combined control of FA and FNA. The device is provided with a raw water box, a shortcut nitrification reactor, a sedimentation tank and a water tank; the shortcut nitrification reactor is divided into a hypoxia stirring area and an aerobic zone, and a DO/pH online controller is arranged in the aerobic zone; an air-blast-head is arranged at the bottom of the reactor; a method utilizing the device to realize the shortcut nitrification comprises the following steps: firstly, a system is started; and secondly, the adjustment is carried out in running; the invention is applicable to the nitrification of the sludge-digestion liquid of a sewage treatment plant, the structure of the device is simple, the process of the method is simple, the operation is convenient, a plurality of carbon sources are saved, the nitrification speed is fast, and the effect is good.

The invention relates to a biology processing apparatus capable of processing sewage at low-temperature with low carbon-nitrogen-ratio in a cold region and a method for processing sewage at low-temperature with low carbon-nitrogen-ratio in the cold region, which relates to the biology processing apparatus for processing sewage and the method for processing sewage. According to the invention, problems that the ratio of carbon source and nitrogen source of sewage in winner at the cold region is low, the synchronization nitrogen and phosphorus removal efficiency in the current sewage processing technology is low, the index of nitrogen and phosphor in a processed effluent can not reach the standard can be solved. The apparatus comprises a water storage tank, a pre-conditioning hypoxia pool, an anaerobic pond, an anoxic pool, an aerobic tank, a sedimentation basin, an aeration head, a filling material, a stirrer, a water inlet pump, a reflux pump, a valve, an outlet pipe, a sludge discharge pipe and a residual sludge discharge pipe; The method comprises the following steps: 1)culturing microbe on a filling material; 2)adjusting operation parameter; 3)adjusting reflux ratio parameter; 4)passing the sewage through the pre-conditioning hypoxia pool, the anaerobic pond, the anoxic pool, the aerobic tank and the sedimentation basin for processing to obtain the processed water. The apparatus and the method can be used for construction and reconstruction of the sewage processing technology at low-temperature with low carbon-nitrogen-ratio in a north region.

The invention provides a method for treating livestock and poultry breeding waste water. The method mainly comprises the following steps of solid-liquid separation treatment, efficient nitrogen-phosphorus biochemical circulation treatment, modified oxidation ditch treatment, sludge reflux treatment, filtration and sterilization treatment and the like. The invention aims to provide the method for treating the livestock and poultry breeding waste water, which is high in capability of removing ammonia nitrogen, total nitrogen and total phosphorus and low in investment cost and running cost, and is easier to manage. The waste water treated by adopting the method provided by the invention can meet the requirement of the national Discharge standard of water pollutants for livestock and poultry breeding GB18596-2001; not only can the up-to-standard discharge requirement in the waste water treatment of the livestock and poultry breeding industry be effectively met, but also the difficult problem of removing the ammonia nitrogen while an organic matter is degraded is also solved; and the method is suitable for the waste water treatment of breeding farms on different breeding scales, similarly, is also suitable for the treatment of municipal domestic waste water and waste water with a high COD (chemical oxygen demand) or high ammonia nitrogen characteristic, and is wide in application prospect.

The invention relates to a device and method for treating low-carbon domestic sewage through single-stage SBBR short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation and belongs to the field of biological sewage treatment. The domestic sewage enters a short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation reactor through a water feed pump. In the short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation reactor, phosphorus accumulating bacteria achieve anaerobic phosphorus release by making full use of an organic carbon source in raw water; part of NH4<+>-N in the raw water is converted into NO2<->-N by ammonia oxidizing bacteria, one part of the NO2<->-N and the NH4<+>-N remaining in the raw water are subjected to an anaerobic ammonia oxidation action so as to achieve autotrophic denitrification, and the other part of NO2<->-N and a small amount of NO3<->-N resulting from the anaerobic ammonia oxidation action are utilized by denitration phosphorus accumulating bacteria so as to achieve synchronous deep denitrification and dephosphorization. According to the method, short-range nitration, anaerobic ammonia oxidation and denitration dephosphorization are applied to the biological treatment on the domestic sewage in a coupled manner, so that the synchronous deep denitrification and dephosphorization of the domestic sewage can be achieved on the basis of saving energy and making full use of the carbon source.

The invention discloses a real-time control method for denitrification by an enhanced circulating activated sludge method, which belongs to the field of biological denitrification of sewage and is suitable for advanced treatment of urban sewage. The effect of circulating activated sludge method on nitrogen and phosphorus removal is not ideal. The steps of the present invention: open the agitator in the main reaction zone at the same time as entering the water, and carry out the denitrification process under the anoxic condition, and stop stirring when a maximum value appears on the pH value curve and an inflection point appears on the ORP curve; Oxygen is supplied to the mixed solution to degrade organic matter and nitrify nitrogenous compounds, and stop aeration when a minimum value appears on the pH curve; repeat the above steps until the end of the water inflow stage, and react with the aerobic aeration stage end of period. The following process is similar to the traditional CAST method. It enters the sedimentation, drainage, and idle stages in turn, repeating all steps in turn and discharging sludge regularly. The whole process is completed by a real-time control system, which is easy to operate, low in cost, strong in impact load resistance, and not prone to sludge bulking.

The present invention relates to an A2/O oxidation channel process synchronous nitrification and denitrification control method and its equipment, belonging to the field of domestic sewage biodenitrogenation technology. It is characterized by that said method includes the following steps: utilizing DO on-line monitoring apparatus to monitor the macroscopic aerobic-anoxic environment formed in oxidation channel aeration basin; utilizing ORP on-line monitoring apparatus to monitor the microscopic aerobic-anoxic environment formed in oxidation channel aeration basin; and utilizing computer to control frequency conversion air blower to control aeration quantity so as to ensure that the macroscopic and microscopic nitrification reaction and denitrification reaction can be simultaneously implemented.

The invention discloses an energy-saving consumption-reducing short-range nitration dephosphorizing coupling technique with synchronous denitrification and a device thereof, belonging to technical field of domestic and industrial sewage treatment. A metal carrier bed is installed in an aerobic section with integrated reaction, and is made of iron wood shaving washed through acid cleaning; and the outer part of the iron wood shaving is covered by wire netting. Under conditions of normal temperature and low dissolved oxygen, the aims of short-range nitration and synchronous denitrification can be realized; an anaerobic section is used for finishing phosphorous releasing; the aerobic section is used for finishing short-range nitration, an anoxic section is used for finishing denitrification for removing phosphorous, a fast aerobic section is used for removing remaining ammonia and nitrogen and phosphorous. The invention uses iron wood shaving with low cost to realize stable accumulation of nitrite; the aerating amount is small, the carbon source is saved, and denitrification for phosphorous removing is carried out by taking the nitrite produced via short-range nitration as electron donor, thus the nitrogen and phosphorous can be removed synchronously; and the problem that the nitrite in water could damage the environment and has toxicity is solved. The invention can realize the aims of saving energy and reducing consumption to the largest extent, and is suitable for purifying and treating domestic sewage continuously for a long time.

The short-path deep biological denitrogenation method for city garbage percolate belongs to the field of sewage treating technology. The short-path deep biological denitrogenation process is one two stage UASB+A/O process including the reflowing short-path denitrification in the first UASB stage, the methane generating reaction in the second UASB stage and the short-path nitrification in the A/O reactor. The short-path nitrification is realized through regulating water reflux ratio of water based on the C/N ratio of influent water to make the anoxic area in the A/O reactor possess free ammonia concentration of 30-70mg/L to inhibit NO2-N oxidizing bacteria, rather than NH4+-N oxidizing bacteria and oxidize 90-99%of NH4+-N, and controlling the aeration time effectively and accurately with the 'ammonia valley' to maintain stable short-path nitrification. Then, the short-path biological denitrification is completed through treating refluxed water and refluxing sludge.

The invention discloses a device and method for combination of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation and belongs to the technical field of municipal sewage treatment. The device mainly comprises an anaerobic/anoxic reactor (A2SBR) and a short-cut nitrification reactor (N-SBR). The method comprises that raw water is fed into the A2SBR reactor, PAO decomposes polyphosphate and glycogen under the anaerobic conditions, provides energy for absorbing external carbon in sewage and transforming the external carbon into PHA stored in vivo, and releases phosphorus, the liquid is stood and discharged, the supernatant rich in ammonia nitrogen is fed into the N-SBR reactor, based on pH and DO real-time control strategy, short-cut nitrification is kept, after the short-cut nitrification, the nitrification liquid is returned into the A2SBR reactor and undergoes short-cut denitrification phosphorus removal and anaerobic ammonia oxidation reactions in an anoxic zone, and after the reactions, the product water satisfying the standard is discharged. The device and method have advantages of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation, save energy and a carbon source and realize low C/N ratio domestic sewage deep denitrification.

The present invention relates to preparation process and application of metal-carbon nanometer composite material. The present invention prepares metal-carbon nanometer composite material by using furfural or its derivative as carbon source and metal salt as the furfural polymerizing catalyst, and through a hydrothermal or solvent thermal process and a carbonizing process. Thus prepared metal-carbon nanometer composite material has controllable appearance, hollow structure and great specific surface area as well as homogeneous distribution of metal on the carbon carrier. The preparation process has the advantages of facile material, simple operation, short period, low cost, etc. and is suitable for industrial production. The obtained metal-carbon nanometer composite material is used as the precursor for high activity catalyst, adsorbent, high grade ink, etc.

The invention provides an integrated anaerobic ammonia oxidation reinforced endogenous denitrification SBBR advanced nitrogen removal method, and belongs to the field of biological treatment of sewage. The system comprises a domestic sewage tank and an SBBR. The method is characterized in that domestic sewage enters the SBBR; the organic matter in sewage is utilized for removing nitrate nitrogen produced by previous reaction cycle through denitrification by denitrifying bacteria; the rest organic matters are stored in bacteria to be synthesized into an internal carbon source; aeration is carried out after the reaction is finished; the integrated anaerobic ammonia oxidation reaction (synchronous short-process nitrifying anaerobic ammonia oxidation reaction) is performed on a biomembrane, thus ammonia nitrogen in sewage can be removed, and little nitrate nitrogen can be produced; the stirring is carried out after the reaction is finished, and the denitrifying bacteria are subjected to internal carbon source denitrification, so as to further reduce the concentration of nitrate nitrogen in water. According to the method, the advantages of the integrated anaerobic ammonia oxidation method and a sequencing batch biofilm reactor process are played; meanwhile, the organic matters in incoming water are fully utilized. Therefore, advanced nitrogen removal of the low-carbon-nitrogen-ratio domestic sewage can be achieved through single system; the operation is simple; the energy is saved.

The invention discloses a device and a method for a low-C/N ratio municipal wastewater short-cut denitrification/short-cut nitrification anaerobic ammonia oxidation biofilm process, belonging to the field of biological sewage treatment. The method comprises the following steps: allowing municipal wastewater and one part of supernatant subjected to short-cut nitrification anaerobic ammonia oxidation in the previous cycle to simultaneously enter a short-cut denitrification bio-membrane reactor, performing anaerobic stirring, performing short-cut denitrification by fully utilizing a carbon source in raw water, and reducing NO3<-> into NO2<->, so that the influence of organic matters in the raw water on microbes in the subsequent short-cut nitrification anaerobic ammonia oxidation bio-membrane reactor; and pumping the supernatant containing NH4<+> and NO2<-> into the short-cut nitrification anaerobic ammonia oxidation bio-membrane reactor through a peristaltic pump for carrying out an anaerobic ammonia oxidation reaction, performing short-cut nitrification and anaerobic ammonia oxidation on the residual NH4<+> in an intermittent aeration and intermittent stirring manner, and finally draining. According to the method disclosed by the invention, the carbon source does not need to be added, advanced nitrogen removal of the low-C/N ratio municipal wastewater is realized, and the method has the advantages of energy consumption, small treatment amount of residual sludge, and the like.

The invention discloses a device and a method for coupling short-cut denitrification phosphorus removal with anaerobic ammonia oxidation, and belongs to the field of biological sewage. The method comprises the following steps: performing anaerobic phosphorus release on phosphorus-accumulating bacteria by utilizing organic carbon sources in domestic sewage after municipal sewage flows into an A2O-SBR reactor and synthesizing into a PHA storage body; enabling a portion of nitration liquid in an N-SBR reactor to flow back to the A2O-SBR reactor for performing oxygen deprivation reaction; performing micro-aeration on the A2O-SBR reactor after the oxygen deprivation reaction is finished so as to complete the absorption of surplus phosphorus and air stripping of nitrogen; standing and precipitating; introducing a portion of drained water of the A2O-SBR reactor into the N-SBR reactor to finish short-cut denitrification; keeping stand and precipitating after short-cut reaction; enabling a portion of supernate to flow back to an oxygen deprivation section of the A2O-SBR reactor and introducing the other portion of supernate and the other portion of drained water of the A2O-SBR reactor into an Anammox-SBR reactor for performing anaerobic ammonia oxidation. According to the device and the method, the carbon sources are reduced, the aeration rate is reduced, the nitrogen and phosphorus removal efficiency is increased, the yield of sludge is reduced, the device and the method are suitable for municipal sewage with low C/N ratio, and the synchronous depth nitrogen and phosphorus removal requirement is met.

The invention discloses a device and a method for realizing sludge digestion fluid short-cut nitrification of continuous flow suspending media. The device is provided with a raw water tank, a denitrification filtering column, a suspending media reactor, a secondary basin and a water outlet tank, wherein the raw water tank is an open casing, the denitrification filtering column is a cylindrical tube, cubic suspending sponge filling materials are filled in the denitrification filtering column, the suspending media reactor is an open basin body with inner cavity divided into a plurality of grid chambers, cubic suspending sponge filling materials are filled in the grid chambers, further the suspending media reactor is equipped with a gas pump, a gas flow meter and an aerated conduit, the secondary basin is a column, and the water outlet tank is a open casing. The method for realizing sludge digestion fluid short-cut nitrification comprises starting the system and adjusting operation in running. The device and the method can save a large amount of denitrification carbon sources, increase denitrogenation efficiency of sewage disposal plants, and achieve the purpose of saving energy and lowering energy consumption.

The invention discloses an AAO (Anaerobic-Anoxic-Oxic)-biological contact oxidation strengthened denitrification and dephosphorization device and a real-time control method of low C/N sewage treatment. The system is mainly composed of a raw water tank, an AAO reactor, an intermediate sedimentation tank, a biological contact oxidation tank, a settling zone, a discharged water tank, an online control box and a computer. The real-time control method is as follows: a DO sensor online collects concentrations of dissolved oxygen in grid cells of the biological contact oxidation tank, and the computer calculates and outputs the concentrations to control the nitrification process; a NH<4+> sensor, a NO<3-> sensor, a NO<2-> sensor and a TP sensor online collect the concentrations of ammonia nitrogen, nitrate, nitrite and total phosphorus in the discharged water tank, and the computer calculates and outputs according to the signals collected by the sensors to adjust the aeration amount, the reflux ratio of nitrifying liquid and water intake C/N. By adopting the online real-time control equipment, the system operation is optimized, the energy is saved, the consumption is reduced, the carbon source and the aeration amount are saved and the residual sludge is reduced.

The invention relates to an ammonia-contained waste water high-efficiency biochemical processing method which comprises the following steps of: firstly putting an inoculant into a bioreactor for extensive culture, wherein the inoculant is a microbial flora of Nitrosomonas sp., Denitrobacter sp., Rhodanobacter sp. and the like, and high ammonia nitrogen and high pH value are used as the conditions of the extensive culture; throwing the microbial flora after the extensive culture or a mixture of the microbial flora and aerobic activated sludge of a sewage plant into a nitration reaction pond to process high-ammonia nitrogen low-COD waste water. The processing method has nonstrict requirements for a temperature range and dissolved oxygen concentration. The method not only has the advantages of energy consumption reduction, carbon source saving, sludge production capacity decrease and the like, but also has the characteristics of high volume loading of ammonia nitrogen removal, good processing effect, strong impact resistant capability, stable system operation and the like and is a processing method with stronger synthesis.

The invention discloses a method for preparing a mesoporous carbon material for an electrochemical capacitor by using rice hulls as raw materials, and belongs to the technical field of carbon materials and microwave chemistry. The method comprises the following steps of: activating the hulls serving as a carbon source by using zinc chloride serving as an activating agent through microwave auxiliary heating to obtain the mesoporous carbon material in one step, wherein the specific surface area of the obtained mesoporous carbon material is between 1,409 and 1,738m<2>/g, the total pore volume is between 0.71 and 2.14cm<3>/g, the average pore size is between 1.99 and 6.08nm, the ratio of the volume of a non-micro pore to the total pore volume is between 66.2 and 99.5 percent, and the mesoporous carbon yield is between 30.4 and 37.0 percent. The method for preparing the mesoporous carbon material is simple, efficient and energy-saving; and the prepared mesoporous carbon material has a higher ratio of the volume of the non-micro pore to the total pore volume, and has extremely high quick charging and discharging performance when used as an electrode material of the electrochemical capacitor.

The invention discloses a sewage treatment method which comprises the following steps: treating sewage after pre-treatment through an anaerobic pond, an anoxic pond, an aerobic pond and a pre-anoxic pond, then enabling the sewage to enter a membrane biological reactor (MBR) membrane pond to be treated, and discharging the sewage. By adopting the sewage treatment method provided by the invention, by additionally arranging the pre-anoxic pond in the traditional A2O+MBR process flow and changing the refluxing pattern, carbon sources can be saved, blast aeration amount can be reduced, and energy consumption can be reduced by more than 10%.

The invention mainly belongs to the technical field of a treating method for high temperature flue gas and a device thereof and specifically relates to a method and a device for removing dioxin from high-temperature flue gas. The method comprises the following steps: firstly, recycling the waste heat of the high-temperature flue gas, removing dust and de-acidifying and then quickly cooling, removing the dust for the second time, entering into a photo-decomposing purifying tower for decomposing dioxin and then emitting. The resynthesis of dioxin is restrained in the manner of recycling the waste heat of the high-temperature flue gas, removing dust and de-acidifying and then quickly cooling and the ultraviolet ray is utilized to catalytically decompose dioxin, so that the simple and efficient removal of the dioxin in the high-temperature flue gas is realized. The method and the device for removing the dioxin according to the invention have the characteristics of simplicity, high efficiency, and the like, and are easy for industrial application.