54results about How to "High removal load" patented technology

The invention relates to a rapid start method for an integrated autotrophic denitrification system and belongs to the technical field of treatment of sewage with high ammonia nitrogen. An SBR (Sequencing Batch Reactor) is inoculated with short-cut nitrification sludge and anammox sludge according to the mass ratio of (1: 3) to (1: 1), and the concentration of mixed sludge is 3,000mg / L to 4,000mg / L. The dissolved oxygen is controlled to be 0.3mg / L to 0.5mg / L by adopting an intermittent aeration operating mode, and the accumulation amount of nitrite nitrogen at the end of aeration is 20mg / L to 30mg / L; in each cycle, three aeration and hypoxic stages are set at intervals; each cycle has six stages, i.e., water inlet, aeration / hypoxic reaction, stirred degassing, precipitating, water outlet and standing. In a starting process, the concentration of dissolved oxygen is controlled unchanged, the balance of supply and consumption of nitrite nitrogen is maintained through a method of stagewise prolonging aeration stage time and shortening hypoxic stage time, and the rapid increase of denitrification load is achieved. When the initial ammonia nitrogen concentration in the reactor reaches 300mg / L, the balance of supply and consumption of nitrite nitrogen is maintained by means of shortening the hypoxic stage time. According to the method, the starting speed is high, the total-nitrogen removal load is high, and the operation is stable.

The invention discloses a method for culturing granular sludge by shortcut denitrification. The method comprises the following steps of putting inoculated sludge into an aerobic reactor, and performing enrichment culture on denitrifying sludge by using high ammonia-nitrogen low COD wastewater; then, performing secondary enrichment screening by wastewater simultaneously containing nitrate nitrogen, nitrite and COD in a facultative anaeration reactor, and performing third enrichment screening by wastewater only containing nitrite and COD; and finally acclimating by wastewater simultaneously containing ammonia-nitrogen, nitrite and COD to obtain the denitrified granular sludge with high removal rate on the nitrite when various forms of nitrogen coexist commonly. By the method, the denitrified granular sludge which can survive in a complicated environment and is capable of effectively treating wastewater nitrous nitrogen under proper condition can be obtained, and the shortcut nitrification-denitrification process can be truly applied to actual engineering conveniently.

The invention discloses an integrated efficient autotrophic nitrogen removal reactor. The reactor comprises an inner barrel and an outer barrel which are coaxially arranged, wherein a three-phase separator and a horn barrel which is tightly connected with an expanding part of the diameter at the upper part of the wall of the outer barrel are coaxially mounted at the upper part of the inner barrel in a sleeving manner; a space formed by the inner barrel and the outer barrel is divided into an anaerobic zone and a precipitating zone by utilizing the horn barrel; the inner barrel is taken as an aerobic zone; an annular overflow weir used for isolating the precipitating zone and the anaerobic zone is arranged on the top surface of the inner barrel; short-range nitrification sludge is inoculated in the aerobic reaction zone; a spiral micropore aeration pipe is arranged in the aerobic reaction zone; anaerobic ammonia oxidation sludge is inoculated in the anaerobic reaction zone; granule-state bamboo charcoal fillers are added into the anaerobic reaction zone to serve as a sludge carrier. According to the reactor, the individual culturing of different functional microorganisms in the single reactor is realized, so that the key operation requirements of partial nitrification and anaerobic ammonia oxidation processes can be satisfied; the efficient and stable running of the reactor is ensured. Thus, the reactor disclosed by the invention is suitable for treating wastewater with a high ammonia-nitrogen ratio and a low carbon-nitrogen ratio.

The invention discloses a process for treating epoxy resin production wastewater. The process comprises: removing oils, suspended particle organic matters, a part of high polymers and toluene in high-salinity wastewater through a cavitation air flotation system, transforming macromolecular organic matters in the wastewater into micromolecular organic matters through an iron-carbon micro-electrolysis reactor, then, oxidizing non-biodegradable and non-chemical oxidable organic matters in the wastewater through a catalytic oxidation reactor under the action of an Fenton reagent, carrying out anaerobic biochemical treatment to reduce the chemical oxygen demand and the biochemical oxygen demand in the wastewater, carrying out aerobic biochemical treatment to anaerobically degrade a part of aerobic organic matters incapable of being degraded by aerobiont into biochemically degradable organic matters, finally, conveying the wastewater into a clean-water reservoir, filtering the wastewater through a multi-medium filter, and discharging the wastewater after meeting the standard. The process disclosed by the invention has the advantages of small energy consumption, high removal load and capability of recycling biogas as an energy source, and the purified water quality meets the emission standard so as to protect the ecological environment.

The invention relates to a CANON (Completely Autotrophic Nitrogen removal Over Nitrite) process starting method for an MBR (Membrane Bioreactor) and belongs to the field of the denitrification treatment and regeneration of municipal domestic sewage. According to the method, the MBR is only inoculated with ordinary active sludge, a CANON process is started successfully in 46 days by a nitrosification start-up and stable-operation stage, a CANON process start-up stage and a CANON process load increase stage through adjusting aeration, aeration time and the concentration of inorganic carbon under the condition of limited oxygen, the total nitrogen removal load can reach 0.41kgN / m<3> / d to the maximum and is 0.38kgN / m<3> / d to the average after 76 days, and then, the quick start and efficient and stable operation of the CANON process are successfully realized.

The invention provides a method for deeply treating micro-polluted source water through in-situ enrichment, immobilization and acclimatization of indigenous microorganisms. In-situ enrichment and immobilization of the indigenous microorganisms are carried out in a stuffy aeration manner under an appropriate aeration condition by inoculating underwater bed sediment to be treated and water to be treated and adding nutrient elements; then, the immobilized microorganisms are gradually adapted to the water quality to be treated by arranging automatic water intake / discharge, gradually reducing the concentration of the nutrient elements in intake water and increasing the amount of intake / discharged water. The method disclosed by the invention has the following advantages: 1) under the stuffy aeration condition, loss of the microorganisms is avoided, multiplication of the indigenous functional microorganisms is accelerated, and the start time of the process is greatly shortened; 2) the multiplication of autotrophic nitrobacteria flora is preferably promoted by inoculating the underwater bed sediment having nitrobacteria flora of high abundance, adding ammonia nitrogen and reducing a carbon nitrogen ratio, and the diversity of the inoculated nitrobacteria flora is ensured by inoculating the underwater bed sediment having an appropriate depth, and therefore the operation stability of a system is promoted.

The invention discloses a method for synchronously removing ammonia nitrogen and nitrate nitrogen in a continuous flow USB reactor through a short-range denitrification reinforcement DEAMOX technology, and belongs to the field of sewage treatment. The method comprises the steps that a USB reactor is inoculated with DEAMOX granule sludge, nitrate nitrogen is converted into nitrite nitrogen through an organic carbon source in fed water in short-range denitrification, ammonia nitrogen in the fed water is removed through the in-situ anaerobic ammonia oxidation effect, and the purpose of efficiently removing nitrogen is achieved by optimizing the mass concentration ratio of nitrate nitrogen to ammonia nitrogen in wastewater and controlling and adjusting the flow of organic carbon source in fed water. The problems that treatment of wastewater containing ammonia nitrogen and nitrate nitrogen is low in treating efficiency and high in energy consumption are effectively solved, aeration consumption in the aerobic stage is not needed, the external carbon source consumption is reduced, the residual sludge yield is low, and the follow-up treating cost is greatly reduced; in addition, the DEAMOX technology achieved in the continuous flow USB reactor has the advantages that the reaction speed is high, nitrate nitrogen produced in anaerobic ammonia oxidation process is removed in situ, and the total nitrogen removal rate and the denitrifying load are high.

The invention relates to a technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms, and the technology is applicable to the purification of low-density, indissolvable and nondegradable organic waste gas. A high-density low-speed air suction way and a domestication way of low flow-rate circuiting liquid are adopted; and during the domestication process, a fungus-bacteria composite organism system with pseudomonas as a dominant bacterium is constructed by use of a pH changing way. A composite organism tower combines two microorganisms of fungus and bacteria, and the diversity of microorganisms can be effectively applicable to the requirements of various indissolvable and nondegradable organics on different bacteria; system resistance is reduced by the introduction of a fungus system; water film resistance is reduced effectively and the mass transfer process of the organic waste gas is accelerated by means of low circuiting flow-rate; an integrated type technological structure is adopted to the fungus and the bacteria, so the processing technology is simplified and the investment cost and operating cost are reduced. The system is high in efficiency of removing the indissolvable and nondegradable organic waste gas and load, and has an extensive applicability.

The invention discloses a device and method of urban domestic sewage treatment by strengthened nitrifying-DEAMOX biofilm process, and belongs to the technical field of biological sewage treatment. The device is mainly composed of a raw water tank, a strengthened nitrifying biofilm SBR, a middle water tank, a DEAMOX biofilm SBR and an effluent tank which are in connection in sequence. Urban domestic sewage enters the strengthened nitrifying biofilm SBR first, nitrate of the last cycle is removed by the prepositive anoxic stirring, and the complete nitrification is conduct through the subsequent aeration; effluent with nitrate and the urban domestic sewage enter the DEAMOX biofilm SBR together for denitrification, meanwhile, the nitrate generated through anaerobic ammonia oxidation is reduced to nitrite by shortcut denitrification bacteria, and the nitrite is removed through in situ anaerobic ammonia oxidation. According to the device and method, the problems of low denitrification efficiency of the urban domestic sewage and high effluent TN are solved, carbon source in the domestic sewage is taken full advantage of, and the additional carbon source consumption is reduced; in addition, on the basis of fast reaction rate of DEAMOX biofilm process and high total nitrogen removal rate and denitrification load, the advanced denitrification of the urban domestic sewage can be achieved.

"A device and method for anaerobic ammonium oxidation coupling heterotrophic denitrification of coal chemical wastewater" relates to a device and method for removing ammonia nitrogen in high-ammonia nitrogen coal chemical wastewater through stable and efficient anaerobic ammonium oxidation coupled heterotrophic denitrification, which belongs to In the technical field of biochemical sewage biological treatment, it is suitable for the treatment of coal chemical wastewater and other high-ammonia nitrogen organic industrial wastewater such as anaerobic digestion biogas slurry, aquaculture wastewater, and monosodium glutamate wastewater.

The invention provides a biofilm-based two-stage reinforced half-nitrosofication coupled anaerobic ammonium oxidation treatment device and method for urban domestic sewage, and belongs to the technical field of wastewater biological treatment. The device is mainly formed by connection of a raw water tank, a reinforced half-nitrosofication SBBR reactor, a middle water tank and an anaerobic ammoniumoxidation MBBR reactor in sequence. The method comprises the following steps: the urban domestic sewage firstly enters the reinforced half-nitrosofication SBBR reactor, front anoxic stirring can store an inner carbon source, low-oxygen aeration realizes half-nitrosofication, and the treated urban domestic sewage enters the anaerobic ammonium oxidation MBBR reactor for denitrification. The deviceand method provided by the invention solve the problems of low nitrogen removal efficiency and high effluent water total nitrogen of the urban domestic sewage, make full use of a carbon source in thedomestic sewage without the need for an external carbon source; and in addition, the biofilm-based reinforced half-nitrosofication coupled anaerobic ammonium oxidation process has a high nitrificationspeed and a high nitrogen removal load and total nitrogen removal rate, and can realize deep denitrification of the urban domestic sewage.

The invention discloses a method for forcibly removing nitrogen and phosphorus from a sewage plant by means of in-situ enrichment of nitrifying bacteria coupled with sludge hydrolysis, and belongs to the field of sewage treatment. Specific to the defects of the conventional mainstream nitrogen and phosphorus removing process, two independent serial or parallel reaction tanks namely, an S-NDN tank and an S-HY tank, are arranged on a sludge return line; sludge returning from a sludge return pump room is shunted into the S-NDN tank and the S-HY tank respectively; the other part of return sludge directly returns into a main biological tank; a nitrogen-rich supernatant generated on a sludge treatment segment of the sewage plant is introduced into the S-NDN tank for serving as a nitrogen source for use in a nitration process, and is applied to in-situ enrichment culture of the nitrifying bacteria; active sludge in the S-HY tank undergoes anaerobic hydrolysis and generates soluble chemical oxygen demand (SCOD); and a mud-water mixed solution which is subjected to the biochemical process in the two reaction tanks returns into a main biological tank respectively. By adopting the method, the nitrogen and phosphorus removing efficiencies can be increased remarkably, and sludge reduction can be realized.

The invention relates to a method for removing VOCs (Volatile Organic Chemicals) through a microwave radiation synergistic double-liquid phase biological filtering tower. According to the method, a microsyringe and an electromagnetic air compressor are respectively connected with a microwave radiation device inlet through pipelines; a thermocouple is accessed to an Fe3O4 wave absorption material of a microwave radiation device; a biological tower bottom gas inlet is connected with a microwave radiation device outlet; one end of a double-liquid phase spraying system is connected with a sprayingliquid inlet at the top of a biological filtering tower; nutrient substances are provided to microorganisms in the biological filtering tower from a double-liquid phase spraying liquid flowing in; acontainer in which the double-liquid phase spraying liquid is stored and a metering pump for providing power to a double-liquid phase spraying pipeline are arranged at the other end of the double-liquid phase spraying system; the microsyringe and the air compressor are powered on, then VOCs are mixed with the air, and at the same time a vacuum air sucking pump is powered on. By adopting the method, the biological filtering removal capacity is increased, and waste gases with relatively large VOC concentrations can be relatively rapidly removed.

The invention relates to a treatment method of high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater. The treatment method comprises the following steps that: S100, wastewater enters an anode chamber of a microbial electrolysis cell for anaerobic ammonia oxidation autotrophic nitrogen removal; S200, the wastewater enters an electrochemical advanced oxidation unit after being subjected to denitrification treatment, and refractory organic matters are degraded; and S300, the effluent of the electrochemical advanced oxidation unit enters a cathode chamber of the microbial electrolysis cell for reduction of perchlorate and chlorate so as to reduce the concentration of chlorine by-products in the wastewater. According to the treatment method, ammonia nitrogen removal, (per) chlorate reduction and advanced oxidation of organic matters are organically coupled, a novel microbial electrolysis cell is established by utilizing the electrochemical activity of anaerobic ammonium oxidation bacteria and chlorate reducing bacteria, autotrophic nitrogen removal by a biological anode and (per) chlorate reduction by a biological cathode are synchronously realized, a new technology for treating the high-salt and high-ammonia-nitrogen degradation-resistant organic wastewater through microbial electrolysis cell-electrochemical advanced oxidation is formed, and economic, efficient and green treatment of the wastewater is realized.

The invention relates to a sewage pretreatment device with a slag-removal, coupling and air-driving biological rotating disc integrated structure. The sewage pretreatment device comprises a sewage draining pipeline and a sewage treatment pool. The sewage pretreatment device is characterized in that a partition wall I is arranged in the sewage treatment pool to divide the sewage treatment pool into a slag removal treatment pool and a biological treatment pool from front to back; a water passage I is arranged in the partition wall I, a grid is arranged at the water passage I, and the slag removal treatment pool is communicated with the biological treatment pool through the water passage I; an air-supplanting and oxygen-supplying pipeline and a biological rotating disc are arranged in the biological treatment pool, an air outlet of the air-supplanting and oxygen-supplying pipeline faces to the biological rotating disc, an air inlet of the air-supplanting and oxygen-supplying pipeline is communicated with atmosphere to generate atmospheric pressure difference to drive the biological rotating disc to rotate, and therefore, the biological rotating disc integrated structure with the slag removal, coupling and air driving functions is configured. The sewage pretreatment device is small in occupied area and can be used for effectively separating impurities in sewage and carrying out bio-enzyme catalysis.

The invention provides an integrated device for biological treatment of organic sewage containing COD and nitrogen through an A / O tower. The integrated device comprises a cylinder; a water distribution zone, a filtering zone, a three-phase contact aerobic zone, a nitrification liquid reflux discharge zone and an anoxic zone are sequentially arranged in the cylinder body from top to bottom; the three-phase contact aerobic zone is a normal-pressure high-oxygen biological membrane filler zone in a non-water-accumulation zone; the sewage inlet is formed in the anoxic zone; and a water outlet of the anoxic zone is communicated with a water inlet of the water distribution zone. The device integrates water distribution, filtration, aerobic treatment and anoxic treatment, and the occupied area issaved. The device is high in pollutant removal load per unit volume. The aerobic zone can cooperatively treat odor generated in the anoxic zone; and the removal rate of COD, ammonia nitrogen and totalnitrogen batteries is relatively high.

The invention discloses a production method of a microbial flora for processing ammonia containing wastewater. A microbial flora is placed in a biological reactor to carry out two grade amplification culture. For the first grade amplification culture, ammonium salts and a microbe growth promoter are added in batches. For the second grade amplification culture, at first, ammonium salts are added in batches, then water is changed, ammonium salt addition and water change are carried out alternatively; during ammonium salt addition process, when the concentration of nitration product reaches 3000-6000 mg / L, the water is changed in batches, at the same time, a microbe growth promoter is added; the promoter comprises 40 to 100 parts by weight of metal salts, 5 to 30 parts by weight of polyamine, and 0.5 to 15 parts by weight of inorganic acid hydroxylamine; the metal salts is composed of calcium salts, copper salts, magnesium salts, and / or ferrous salts; and after two grade amplification culture, the bacteria are collected. The production method has the advantages that the culture period is short, the culture efficiency is high, the activity of obtained microbial flora is high, the tolerance is strong, and the ammonia nitrogen containing wastewater can be effectively processed.

The invention discloses a method for forcibly removing nitrogen and phosphorus from a sewage plant by means of in-situ enrichment of nitrifying bacteria coupled with sludge hydrolysis, and belongs to the field of sewage treatment. Specific to the defects of the conventional mainstream nitrogen and phosphorus removing process, two independent serial or parallel reaction tanks namely, an S-NDN tank and an S-HY tank, are arranged on a sludge return line; sludge returning from a sludge return pump room is shunted into the S-NDN tank and the S-HY tank respectively; the other part of return sludge directly returns into a main biological tank; a nitrogen-rich supernatant generated on a sludge treatment segment of the sewage plant is introduced into the S-NDN tank for serving as a nitrogen source for use in a nitration process, and is applied to in-situ enrichment culture of the nitrifying bacteria; active sludge in the S-HY tank undergoes anaerobic hydrolysis and generates soluble chemical oxygen demand (SCOD); and a mud-water mixed solution which is subjected to the biochemical process in the two reaction tanks returns into a main biological tank respectively. By adopting the method, the nitrogen and phosphorus removing efficiencies can be increased remarkably, and sludge reduction can be realized.

The invention relates to the technical field of wastewater treatment, and discloses an ecological treatment device for aquaculture wastewater. The device comprises an adjusting tank and a composite vertical subsurface flow constructed wetland, and the composite vertical subsurface flow constructed wetland is composed of an upstream vertical subsurface flow constructed wetland and a downstream vertical subsurface flow constructed wetland; the composite vertical subsurface flow constructed wetland sequentially comprises an aquatic plant layer, a humic acid modified iron-ore slag filler layer, a fine gravel layer, a volcanic rock layer and a coarse gravel layer from top to bottom; the upstream vertical subsurface flow constructed wetland further comprises an upstream wetland water distribution pipe; and the downstream vertical subsurface flow constructed wetland further comprises a downstream wetland water distribution pipe and a water collection pipe. The invention further provides an ecological treatment process for the aquaculture wastewater. According to the invention, a combined process of the adjusting tank, the composite constructed wetland and a humic acid modified iron-ore slag filler is adopted, and two technologies of a microbiological method and a chemical adsorption method are combined, so that nutrient substances and residual antibiotics in the aquaculture wastewater can be effectively reduced, and the purpose of improving the quality of the aquaculture wastewater is achieved.

The invention discloses a foamed nickel and iron carbon combined biological filler and a preparation method thereof. The foamed nickel and iron carbon combined biological filler includes foamed nickel, and iron carbon particles are wrapped in the foamed nickel; the foamed nickel has an ultrathin knitmesh flaky structure; an iron carbon particle matrix is cylindrical particles, and the outer surface of the matrix is covered with iron spicules fully. The preparation method of the foamed nickel and iron carbon combined biological filler comprises that the iron carbon particles are completely wrapped in the flaky foamed nickel, the product has a shape of sphere, and the foamed nickel is supported on the surface of the iron carbon particles by an iron needle-shaped net. The foamed nickel is prepared by an electrodeposition technology. The foamed nickel is a polyester polyurethane foamed plastic having pores opened by mechanical blasting, and the foamed plastic is composed of dodecahedral structural units with pentagonal windows. By adopting of the foamed nickel and iron carbon combined biological filler and the preparation method thereof, the energy consumption of the waste water and waste gas purification systems can be greatly reduced, the process treatment process does not involve secondary pollution, and the purification efficiency of degradation-resistant organic pollutants canbe fully improved.

The invention discloses a method for producing microorganisms for processing ammonia-containing wastewater. Inoculums are put into a bioreactor for carrying out three-level amplification culture step by step, wherein the inoculums are microorganisms for processing the ammonia-containing wastewater and having strong endurance capacity; the first-level culture adopts a way of supplementing ammoniumsalts in batch, the second-level culture and the third-level culture adopt ways of alternately supplementing materials in batch and changing water in batch; and the microorganisms are collected afterthe three-level amplification to be used for a high ammonia-nitrogen containing wastewater processing system or storage for later use. The method has the advantages of high culture efficiency, large production quantity and the like, and is suitable for largely and commercially producing the microorganisms for processing the ammonia-containing wastewater. The microorganisms can effectively processlow-COD and high ammonia-nitrogen containing wastewater, such as catalyst production wastewater and the like.

The invention discloses a vertical flow artificial wetland. The vertical flow artificial wetland comprises a first-stage vertical flow artificial wetland pond, a second-stage vertical flow artificial wetland pond and a third-stage vertical flow artificial wetland pond which are sequentially connected in series, wherein aerator pipes are arranged in the first-stage vertical flow artificial wetland pond and the third-stage vertical flow artificial wetland pond, filling layers are arranged above the aerator pipes, soil layers are arranged on the filling layers, and aquatic plants are planted on the soil layers; and the aerator pipe is not arranged in the second-stage vertical flow artificial wetland pond, the other inner structure of the second-stage vertical flow artificial wetland pond is same as that of the first-stage vertical flow artificial wetland pond, and a second water inlet pipe is arranged above the second-stage vertical flow artificial wetland. The invention further provides a method for treating nitrogen, phosphorus and tetracyclines in sewage by virtue of the vertical flow artificial wetland. By virtue of the purification capacity of a middle and rear segment of the vertical flow artificial wetland, the removal load is increased, and the occupied area is reduced; and the effluent index of the vertical flow artificial wetland is increased by virtue of aeration, so that the effluent reaches the standards, and a simple and feasible method for the small-scale sewage treatment is provided.

The invention discloses a method for removing nitrate in underground water by utilizing hydrogen autotrophic denitrification granular sludge, which comprises the following steps: inoculating the hydrogen autotrophic denitrification granular sludge into a reactor, taking NO3<-> polluted underground water as reactor inlet water, and treating the NO3<-> polluted underground water by using an SBR operation reactor; the operation conditions of the reactor are as follows: the operation temperature is 15.0+ / -0.3 DEG C to 30.0 + / -0.5 DEG C; wherein the operation period of each SBR is 35-87min, the water feeding time is 3min, the reaction time is 22-72min, the precipitation time is 8min, and the water discharging time is 2min; wherein the drainage ratio is 0.56; wherein the HRT is 1.0 to 2.5 hours;wherein the inlet water NO3<->-N load is 0.15 to 0.40 kgN / (m<3>. D); wherein the flow of H2 is 61.6 L / d; wherein a pH value is 7.0 to 8.5. The results show that the hydrogen autotrophic denitrification granular sludge reactor provided by the invention can realize efficient and stable removal of low-concentration NO3<-> in simulated underground water.

The invention discloses a method for synchronously removing ammonia nitrogen and nitrate nitrogen in a continuous flow USB reactor through a short-range denitrification reinforcement DEAMOX technology, and belongs to the field of sewage treatment. The method comprises the steps that a USB reactor is inoculated with DEAMOX granule sludge, nitrate nitrogen is converted into nitrite nitrogen through an organic carbon source in fed water in short-range denitrification, ammonia nitrogen in the fed water is removed through the in-situ anaerobic ammonia oxidation effect, and the purpose of efficiently removing nitrogen is achieved by optimizing the mass concentration ratio of nitrate nitrogen to ammonia nitrogen in wastewater and controlling and adjusting the flow of organic carbon source in fed water. The problems that treatment of wastewater containing ammonia nitrogen and nitrate nitrogen is low in treating efficiency and high in energy consumption are effectively solved, aeration consumption in the aerobic stage is not needed, the external carbon source consumption is reduced, the residual sludge yield is low, and the follow-up treating cost is greatly reduced; in addition, the DEAMOX technology achieved in the continuous flow USB reactor has the advantages that the reaction speed is high, nitrate nitrogen produced in anaerobic ammonia oxidation process is removed in situ, and the total nitrogen removal rate and the denitrifying load are high.

The invention belongs to the technical field of biological sewage treatment, and particularly relates to a micro filler for water treatment and a preparation method thereof. The micro filler for water treatment comprises a porous micro filler, a metal-based nano-type chemical material and a nitrogen chemical agent. According to the invention, a porous micro filler with proper specific gravity is selected, and a metal-based nano-type chemical material and a nitrogen chemical agent are attached to the surface of the porous micro filler in a dry powder (or solution) mixing and stirring manner by utilizing the characteristic of large specific surface area of the porous filler. The treatment agent has the main functions that the biomass and settleability of the biological tank can be effectively improved; meanwhile, the retention of denitrifying functional bacteria with a relatively long generation period in a water treatment system is facilitated; the flora structure can be adjusted, and the autotrophic nitrogen removal rate of a water treatment biological system is improved; and finally, energy conservation and consumption reduction of a water reclamation plant are promoted.

According to the method for synchronously removing nitrogen and carbon from swine wastewater, denitrification, methanation, short-cut nitrification and anaerobic ammonia oxidation are organically combined through an EGSB-SMD and EGSB-PNA two-stage reactor, the advantages of functional bacteria in the reactor are improved to the maximum extent through the two-stage SMD-PNA system, ammonia nitrogen and organic carbon are almost completely removed, culture is easy, and the method is suitable for industrial production. The whole process is high in stability and controllability. In the EGSB-SMD, the anoxic-anaerobic structure of the granular sludge is beneficial to the synergetic symbiosis of methanogens and denitrifying bacteria, the COD removal load is higher while the removal of NO2-N and NO3-N in raw water and reflux sewage is considered, and an internal reflux device and a PNA external reflux device in the SMD dilute the influent concentration and reduce the substrate inhibition. In EGSB-PNA, an internal reflux device increases the ascending velocity and promotes the formation of granular sludge with larger volume, and soft and semi-soft combined filler in the reactor promotes the formation and tight attachment of a biological membrane, so that the biomass in the reactor is maintained, and the stable operation of a CANON process is maintained.

The invention discloses a foamed nickel and iron carbon combination type biological filler and a preparation method thereof. The foamed nickel and iron carbon combination type biological filler comprises foamed nickle; the foamed nickle is internally coated with iron carbon particles; the foamed nickle adopts an ultrathin netting type sheet structure; and the matrix of the iron carbon particles adopts cylindrical particles, the outer surfaces of the cylindrical particles are distributed with acicular ferrite. According to the preparation method of the foamed nickel and iron carbon combinationtype biological filler, the iron carbon particles are completely coated with the sheet-shaped foamed nickle, and the shape is spherical, and the foamed nickle is supported on the surfaces of the ironcarbon particles through an acicular ferrite net; wherein the foamed nickle is prepared by adopting an electrodeposition technology; the foamed nickle adopts polyester-type polyurethane polyfoam withholes formed by mechanical blasting; and the polyfoam is composed of a dodecahedral structural element with a pentagonal window. By adopting the preparation method provided by the invention, the energy consumption of a purification system of waste water and waste gas is greatly reduced, no secondary pollution is involved during the process treatment, and the efficiency in purifying persistent organic pollutants is fully improved.

The invention discloses a multi-chamber fixed-bed biomembrane reactor and a method for treating perchlorate in sewage using the same. The multi-chamber fixed-bed biomembrane reactor comprises a filler column with a water inlet at the bottom and a water outlet at the upper part, wherein the inner space of the filler column is divided into more than or equal to two reaction chambers communicated up and down by a water distribution plate with a through hole; and a water-in pipe is arranged below each water distribution plate. Traditional one-chamber reactor is divided into more than two reaction chambers by the water distribution plate, and matching water inlets are formed in the two reaction chambers respectively; and moreover, the pollutants fully contact with sulfur particles, single dominant bacterial community is realized in the reactor, thus the utilization rate of sulfur is increased, and the generation of hydrogen sulfide gas and sulfate is reduced.

The invention provides a method for treating high-concentration ammonia nitrogen wastewater, wherein the method comprises: S1, filtering; S2, salinization; S3, impurity removing; S4, biological nitrogen removal; and S5, precipitation. According to the present invention, the method of the present invention sequentially comprises salinization with HCl and impurity removing with NaOH, is different from the conventional method firstly performing metal impurity removing with NaOH, can effectively avoid the pollution caused by the NH3 escaping into the air after the NaOH adding, can respectively obtain high-purity NH4Cl and metal hydroxide solids respectively for agrochemical fertilizers and metal refining and purifying, such that the waste caused by the difficulty in the separation after mixingcan be avoided.