339 results about "Nitrification" patented technology

The invention discloses a nitrifying bacterium agent suitable for aquarium, fishpond and other aquatic industries, the strain of the nitrifying bacterium agent is Glutamicacter nicotianae TJ-X, the nitrifying bacterium agent is preserved in Guangdong Microbial Culture Collection Center on February 12, 2025, and the preservation number is GDMCC NO.65877. The invention further discloses a preparation method of the nitrifying bacterium agent. The nitrifying bacteria TJ-X strain suitable for the aquarium industry can perform heterotrophic nitrification and aerobic denitrification under the condition that the salt content is 5wt%, under the condition of laboratory pure culture, within 8 hours, the removal rate of ammonia nitrogen, nitrite nitrogen and nitrate nitrogen is 99% or above, the COD degradation rate is 81%, the nitrifying bacteria TJ-X strain is suitable for the environment where organic matter, ammonia nitrogen, nitrite and nitrate coexist, and the nitrifying bacteria TJ-X strain can be applied to the aquarium industry. The microbial agent has the functions of degrading organic matters such as excrement of ornamental fish and fish food, converting organic nitrogen into inorganic nitrogen, and simultaneously degrading inorganic nitrogen such as ammonia nitrogen, nitrite nitrogen and nitrate nitrogen into nitrogen. And the strain is high in biological safety, high in environmental adaptability and high in growth density, can be applied to water industries with high organic matter content and inorganic nitrogen, such as the aquarium industry and aquaculture, and has a wide application prospect.

The invention discloses a membrane filtration sewage treatment system based on fine control, relates to the technical field of sewage treatment, and solves the technical problems of delayed response to water quality and water quantity fluctuation and extensive biochemical reaction control caused by water inlet load impact in an existing sewage treatment system. The system comprises an inflow water pretreatment module used for predicting inflow water quality in real time by using a water quality prediction model based on a neural network, and carrying out water quantity balance and water quality adjustment on inflow water according to a prediction result to obtain a first water body; the biochemical reaction module is used for cooperatively controlling external carbon source addition, nitrification liquid backflow and aeration intensity in the biological reaction process of the first water body by utilizing a multivariable model predictive control method to obtain a second water body after biochemical reaction; and the deep purification module is used for carrying out solid-liquid separation and deep purification on the second water body to obtain an effluent water body, and triggering cleaning and maintenance operation of the membrane based on a prediction result of the membrane pollution characteristics.

The utility model relates to a denitrification strengthening device based on AOA process coupling MABR membrane, which comprises a water distribution system, a biological reaction system and a sedimentation tank, the water distribution system comprises a water inlet pipeline, and the water inlet pipeline is provided with two branches, namely a water distribution pipeline I and a water distribution pipeline II; the water distribution pipeline I and the water distribution pipeline II are both connected with the biological reaction system; the biological reaction system comprises an anaerobic tank, an aerobic tank and an MABR membrane tank which are communicated in sequence, and an MABR membrane assembly is arranged in the MABR membrane tank; the MABR membrane tank is communicated with the sedimentation tank, the sedimentation tank is provided with a sludge return pipe which is connected to the front end of the anaerobic tank, and the sedimentation tank is also provided with a water outlet pipeline and a sludge discharge pipeline. The AOA process is coupled with the MABR membrane, so that the occupied area and the use amount of the MABR membrane are reduced, the two denitrification processes are superposed, the denitrification effect of sewage treatment is enhanced, and the denitrification efficiency is improved by more than 30%; the anoxic tank part of the AOA process is provided with the MABR membrane tank, and the MABR membrane tank can be used for synchronously carrying out denitrification and nitrification and denitrification under the condition of low carbon nitrogen ratio, so that efficient denitrification is realized.

The invention relates to the field of biological environmental protection, in particular to a heterotrophic nitrification immobilized engineering bacterium for efficient denitrification and a preparation method and application thereof.According to the heterotrophic nitrification immobilized engineering bacterium for efficient denitrification and the preparation method and application of the heterotrophic nitrification immobilized engineering bacterium, polyethylene glycol-glucan two-aqueous-phase concentration and trehalose protection liquid are adopted for synergistic effect, the bottleneck of cell damage caused by a traditional flocculation method can be avoided, trehalose molecules can wrap bacterial cells, and the bacterial cells can be effectively degraded; the immobilized particles can resist osmotic pressure impact and pollutant invasion, the survival rate of thalli is higher than 95%, so that the immobilized particles always keep ultrahigh denitrifying enzyme activity in various sewage environments, honeycomb-shaped pores are formed in an ethyl cellulose matrix, a microenvironment with a high specific surface area is provided for thalli attachment, and the built-in nano zeolite continuously and slowly releases Cu < 2 + > and Zn < 2 + > trace elements, so that the immobilized particles can be recycled. A thallus metabolism enzyme system is synergistically activated, and the denitrification pathway function is enhanced; the chitosan-polydopamine outer coating layer strongly captures the nitrogen-containing pollutants, so that the removal efficiency of the nitrogen-containing pollutants is improved; through triple protection, the density of unit granular bacteria is up to 109 cells / cm, the service life is prolonged, and the denitrification performance is improved by more than 40%.

The invention provides a domestic sewage treatment method and system based on shortcut nitrification and anaerobic ammonia oxidation of Anammox bacteria preposed alkali reduction, and relates to the technical field of sewage treatment. The method comprises the following steps: anaerobic treatment: converting an organic suspended solid into an easily degradable carbon source through hydrolytic acidification bacteria; the carbon source is absorbed by denitrifying phosphorus-accumulating bacteria and denitrifying glycogen-accumulating bacteria and is stored as an intracellular carbon source; primary anoxic treatment: reacting ammonia nitrogen with nitrite through Anammox bacteria, and synchronously reducing alkalinity; aerobic treatment: under the condition of low alkalinity, in combination with low dissolved oxygen control, Comamox bacteria oxidize ammonia nitrogen into nitrite and accumulate the nitrite; and secondary anoxic treatment: denitrifying residual oxidation nitrogen into nitrogen by using intracellular carbon through denitrifying glycogen-accumulating bacteria. Through the synergistic effect of the hydrolytic acidification bacteria, the denitrifying phosphorus-accumulating bacteria, the Anammox bacteria, the Commox bacteria and the denitrifying glycogen-accumulating bacteria, efficient nitrogen and phosphorus removal is realized.

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 the technical field of environmental microbial resource development and sewage denitrification. The invention discloses an efficient denitrification strain Paracoccus sp.N21 with a flocculation characteristic, which is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.34710. The invention further discloses a preparation method of the efficient denitrification strain Paracoccus sp.N21. The strain obtained by the invention can completely remove ammonia nitrogen within 12 hours and thoroughly remove nitrate nitrogen within 48 hours, the removal rate reaches 100%, and ammonia nitrogen is preferentially degraded in a mixed nitrogen source. The method has the unique advantages that the flocculation rate in the nitrification process and the flocculation rate in the denitrification process exceed 93.9%, and the usage amount of a flocculating agent can be greatly reduced. When actual kitchen wastewater is treated, the ammonia nitrogen removal rate reaches 100%, and the removal rate reaches up to 7.51 mg / (L.h). The application of the strain can effectively reduce the volume of a reactor, reduce energy consumption and operation cost, provides a new solution for simplifying a biological denitrification process, is particularly suitable for treating high-ammonia-nitrogen kitchen wastewater, and has remarkable environmental and economic benefits.

The invention discloses an online monitoring and regulating system for inhibiting nitration reaction by thiourea for sewage treatment, and relates to the technical field of sewage treatment. Comprising an on-line monitoring module which monitors and obtains nitrification parameters and environmental parameters in the nitrification activity process through an on-line analyzer and a sensor network, and adjusts parameter monitoring frequency according to the nitrification parameters; the intelligent control module is used for determining optimal parameters of a PID (Proportion Integration Differentiation) controller through a virtual reference model according to the nitrification parameters and the environmental parameters, and determining the addition amount of a thiourea solution according to the optimal parameters; and the thiourea adding unit is used for adding the thiourea solution at an adding point through adding equipment according to the adding amount of the thiourea solution. According to the method, excessive inhibition possibly caused by a traditional control model based on historical data is avoided, the risk that fragile nitrifying flora is thoroughly killed is effectively prevented, success of the bacterium cultivation process is ensured, and the system starting time is shortened.

The invention provides a method for inhibiting sludge bulking through hypoxia-anoxic intermittent aeration. The method comprises the following steps: inoculating activated sludge into a sequencing batch reactor, introducing sewage to be treated, mixing, and carrying out intermittent aeration treatment; wherein the intermittent aeration treatment comprises at least one cycle formed by alternation of a low-oxygen treatment time period and an anoxic treatment time period; and in the low-oxygen treatment period, the dissolved oxygen concentration in the reactor is controlled to be higher than that in the anoxic treatment period through aeration. According to the method, through low-oxygen-oxygen-deficiency alternate environment regulation and control, efficient nitrification and denitrification are achieved, meanwhile, filamentous bacterium growth is selectively inhibited, flora structure optimization is promoted, the sludge settling performance is rapidly recovered, the system denitrification efficiency is improved, and the method has the advantages of being simple in process, environmentally friendly and low in operation cost.

This utility model relates to a wastewater treatment device for chloroamine production, belonging to the field of wastewater treatment technology. It includes a treatment tower with a dividing funnel in the upper middle part that separates it into an upper aerobic zone and a lower anoxic zone. The upper aerobic zone contains multiple fluidized bed packings, and an effluent weir is located at the top of the upper aerobic zone. An overflow pipe is located on the outer side of the bottom of the effluent weir on the treatment tower, connecting to the lower anoxic zone. The lower anoxic zone consists of a biological packing layer, a filter layer, and a filter plate from top to bottom. An effluent pipe is located at the bottom of the treatment tower. This utility model integrates the upper aerobic zone and the lower anoxic zone vertically within the treatment tower, significantly saving floor space. After entering the treatment tower, the wastewater first undergoes nitrification in the upper aerobic zone under aeration, and then overflows through the effluent weir into the lower anoxic zone, where denitrification occurs due to the anaerobic bacteria on the biological packing layer. This ensures more thorough contact between microorganisms and water, resulting in higher wastewater treatment efficiency.

The invention provides a low-cost nitrogen and phosphorus removal treatment process for kitchen wastewater, belongs to the technical field of kitchen wastewater treatment, and aims to overcome the defects that an existing nitrogen and phosphorus removal process for kitchen wastewater is long in flow, high in energy consumption, high in cost, unstable in effect and the like. According to the process, a combined process of pretreatment, short-cut nitrification, anaerobic ammonium oxidation and chemical auxiliary phosphorus removal is adopted, modified suspended filler, an anaerobic ammonium oxidation bacteria immobilized carrier and a modified fly ash composite phosphorus removal agent are matched, and intermediate water quality regulation and sludge backflow design is combined. The method realizes efficient and synchronous removal of nitrogen and phosphorus, simplifies the process flow, reduces energy consumption and medicament cost, improves operation stability, adapts to the characteristics of water quality fluctuation of kitchen sewage, and is high in practicability.

The utility model discloses an integrated nitrification and denitrification biochemical pool, which comprises a reaction unit, the reaction unit comprises a biochemical pool and a partition plate vertically fixed in the center inside the biochemical pool, the partition plate divides the biochemical pool into a nitrification area and a denitrification area, one side of the biochemical pool is fixedly communicated with a drainage pipe, a valve is sleeved on the drainage pipe, and the valve is communicated with the nitrification area and the denitrification area. The reaction unit further comprises a water supply assembly used for conveying sewage in the nitrification area to the denitrification area and a depth-adjustable aeration unit arranged in the nitrification area of the biochemical pool, the depth-adjustable aeration unit comprises an aeration part and a driving part, and the aeration part is used for aerating the nitrification area. According to the utility model, the sewage can be nitrified and denitrified in the biochemical pool, and during nitrification, the driving part can drive the aeration part to adjust the aeration range according to the water volume, so that the aeration range covers the whole water body, and the increase of useless aeration power consumption at a low water level is reduced.

The invention discloses an intelligent regulation and control domestic sewage and initial rainwater cooperative treatment system and method, and the method comprises the steps: S1, separating the severely polluted initial rainwater from clean middle and later rainwater, and guiding the initial rainwater to a regulation and storage pool; s2, storing the seriously polluted initial rainwater in the regulation and storage tank, and homogenizing the water quantity and the water quality; s3, directly introducing the homogenized initial rainwater into the tail end of a sewage treatment system, namely a biochemical treatment unit; s4, the introduced initial rainwater and domestic sewage from the front end of the sewage treatment system are fully mixed in a biochemical treatment unit, subjected to nitrification, denitrification and organic matter degradation together and then enter a subsequent secondary sedimentation tank to be subjected to mud-water separation, and supernate obtained through sedimentation is disinfected and then discharged or recycled after reaching the standard; the initial rainwater is directly introduced into the biochemical treatment unit, so that the ineffective circulation of the initial rainwater in the front-end physical treatment unit is avoided, and the strong pollutant degradation capability of the biochemical treatment unit is fully utilized.

The utility model belongs to water quality purification technical field provides a kind of purification device, circulating water aquaculture water quality purification system, the device includes by first filter bag, second filter bag and third filter bag that inner layer nest together outward, water flow gap is provided between adjacent filter bag;Water hole is opened on first filter bag, second filter bag and third filter bag, water source entering purification device forms axial-radial-axial flow path in water flow gap by water hole, finally reaches the water purification effect of denitrification and filtration.This purification device can filter organic particulate matter in water source and the whole process device stability is high;And have filtration function and adsorb particulate function;Based on the assembly of purification device, the water oxygen content gradient of the present purification system can be reduced to anaerobic state, thereby causing short-range nitrification reaction to remove nitrogen from water body;And the system has the characteristics of low energy consumption, good purification effect and compact system, thereby reducing the total investment cost.

The invention discloses a double-sludge and double-circulation membrane biological sewage treatment device and a double-sludge and double-circulation membrane biological sewage treatment method. Comprising an anaerobic zone, an anoxic zone, an aerobic zone and an MBR (Membrane Bioreactor) pre-anoxic zone which are arranged in sequence, and further comprises a cylindrical shell and a treatment tank at the center of the shell, a rotary gallery is arranged in the shell on one side of the treatment tank; a snakelike coiled gallery is arranged in the shell on the other side of the treatment tank; the anaerobic zone is arranged in the rotary gallery; the anoxic zone and the aerobic zone are jointly arranged in a snakelike coiled corridor, and the aerobic zone is divided into four continuous sections, namely a first aerobic zone, a second aerobic zone, a third aerobic zone and an aerobic nitrification zone; sewage is lifted by a through-wall pump to enter an MBR pre-anoxic zone, and the MBR pre-anoxic zone is divided into an upper section and a lower section; a cylindrical membrane biofilter is arranged in the MBR filtering area; and the cylindrical membrane biofilter is driven by a variable frequency motor to rotate. By arranging the double-circulation galleries, the circulation multiples of the anaerobic zone and the anoxic and aerobic zone can be controlled respectively, and the target removal rate of pollutants is achieved.

The invention discloses an endogenous acidification device and method applied to a high-pH semiconductor wastewater anaerobic ammonia oxidation system, the device comprises a water distributor, the water distributor comprises a main water pipe, a water distribution tank and a water diversion tank which are connected in sequence, the water distribution tank is connected with an acid-base dosing mechanism, each branch water pipe is connected with the water diversion tank through a flow control module, and the flow control module is connected with the water distribution tank; the water outlet end of each branch water pipe is arranged close to the bottom wall of the tank body and is 0.5-1.0 m away from the bottom wall of the tank body, the first monitoring system is used for monitoring the pH of the water outlet end of each branch water pipe, and the second monitoring system is used for monitoring the pH of the part, which is more than 1.0 m horizontally away from the water outlet end of each branch water pipe and is uniformly aerated and mixed, in the tank body. The device utilizes the endogenous acidification effect generated by nitrification at each water inlet point in the tank to neutralize the high pH value of the inlet water, realizes the effect of adjusting the water quality in the tank through the inlet water, ensures the water distribution uniformity and the overall stability of the whole water quality, avoids the local water quality unbalance in the tank, and prevents the inhibition on functional bacteria.

The invention relates to the technical field of sewage treatment, in particular to a greenhouse gas emission control method and system applied to sewage nitrification treatment.The greenhouse gas emission control method is implemented in an aerobic treatment unit in a sewage digestion treatment system, and in the aerobic treatment unit, the sewage is subjected to nitrification treatment; arranging a front-section measuring point and a rear-section measuring point along the main flow direction of the mixed liquid, and periodically acquiring a first nitrite concentration time sequence at the front-section measuring point and a second nitrite concentration time sequence at the rear-section measuring point respectively; respectively configuring a front-section oxygen supply device and a rear-section oxygen supply device based on the front-section measuring point and the rear-section measuring point, controlling an oxygen supply base line of the front-section oxygen supply device based on the change trend of the first nitrite concentration time sequence and the second nitrite concentration time sequence, and controlling a short-time oxygen reduction control window of the rear-section oxygen supply device; wherein the oxygen supply base line is a preset oxygen supply level executed by the front-section oxygen supply device, and the short-time oxygen reduction control window carries out oxygen supply reduction or intermittent time arrangement for the rear-section oxygen supply device.

The invention provides a nutrient retention agent as well as a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: preparing the modified composite powder, forming the retention carrier, preparing the biological source inhibitor, preparing the synergistic liquid, preparing the regulation and control substrate, spraying the retention carrier for three times in a fluidized bed, and drying to obtain the nutrient retention agent. The invention also provides a nutrient retention agent and an application of the nutrient retention agent in a compound fertilizer. According to the nutrient retention agent provided by the invention, a regulation and control matrix is constructed through sodium carboxymethyl cellulose, carboxymethyl chitosan and zeolite, the soil adaptation range is wide, the effect attenuation rate in different soils is low, the production and use processes are simplified, and the popularization threshold is reduced; through the layered coating design, the activity of nutrients such as nitrogen in the fertilizer is effectively retained, the loss of a large amount of nutrients is effectively avoided, and soil nitrification can be effectively inhibited.

The utility model discloses a scattered household black water treatment and resource utilization device which comprises an anaerobic fermentation tank, an aerobic nitrification tank, a denitrification nitrogen removal tank, a biological aerated filter, a cascade artificial wetland and a water storage tank which are sequentially communicated, a discharging device for discharging biological fertilizer is arranged on one side of the bottom of the anaerobic fermentation tank, and a water outlet higher than the discharging device is formed in one side of the anaerobic fermentation tank. According to the technical scheme provided by the utility model, germs, parasitic ova and the like are killed through anaerobic fermentation, meanwhile, high-quality organic fertilizer can be generated, then the technologies of aerobiotic treatment, anoxic treatment, biofilter treatment, constructed wetland treatment and the like are combined, pollutants in black water are further degraded, the quality of effluent water is improved, and the effluent water is reused for irrigation of vegetable fields, farmlands, forest lands and the like. And the organic fertilizer is recycled to the farmland to improve the soil fertility, so that the effective treatment and resource cyclic utilization of the black water of the scattered households are realized.

The invention relates to a photocatalytic short-cut nitrification coupling anaerobic ammonia oxidation device and a high-ammonia-nitrogen degradation-resistant organic wastewater treatment system. The device comprises an outer cylinder, an inner cylinder, a flow guide assembly, a flow pushing assembly, an aeration assembly, a crushing assembly and a photocatalytic assembly, the inner cylinder is communicated with the outer cylinder; the photocatalytic assembly is arranged in the inner cylinder; the flow guide assembly is communicated to the axial bottom end of the inner cylinder, and sieve holes are formed in the upper end; the flow pushing assembly is arranged on the inner side of the sieve hole; the aeration assembly is arranged below the plug flow assembly; and the crushing assembly is arranged below the flow guide assembly. On the basis, a high-ammonia-nitrogen degradation-resistant organic wastewater treatment system is developed by taking the device as a core, and the effect of firstly removing carbon and then removing nitrogen is realized.

The utility model relates to an anoxic tank stirring device in integrated equipment, which comprises a cuboid equipment shell, the equipment comprises an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, an equipment feed port is connected with the anaerobic tank, the anaerobic tank is connected with the anoxic tank through a water passing hole, the anoxic tank is internally provided with a stirring device for preventing sludge sedimentation, and the aerobic tank is connected with the secondary sedimentation tank through a water passing hole. The anoxic tank stirring device is connected with the nitrification liquid return pipe through a pipeline, the anoxic tank is connected with the aerobic tank through a water passing hole, the aerobic tank contains an aeration pipeline and an aeration device connected with the aeration pipeline, the aerobic tank is connected with the secondary sedimentation tank through a water passing hole, the secondary sedimentation tank contains a sludge return pipe, and the equipment discharge port is connected with the secondary sedimentation tank. The anaerobic tank, the anoxic tank, the aerobic tank and the secondary sedimentation tank all comprise artificial crawling ladders and inspection manholes; in the equipment, an anoxic tank stirring device is connected with a nitrification liquid reflux pipe, and a nitrification liquid reflux pump is used for providing power for the stirring device.

The invention discloses a culture and domestication method of a salt-tolerant heterotrophic nitrification and denitrification microbial agent, and belongs to the technical field of environmental microorganisms. Comprising the following steps: inoculating a heterotrophic nitrification culture medium with a halomonas seed solution, and culturing until a strain reaches a stable growth period to finish domestication. The Halomonas sp. SOB56 strain provided by the invention can be used for effectively removing nitrogen-containing substances in high-salinity wastewater such as mariculture wastewater and the like, and can be adapted to high-salinity wastewater with different salinity through domestication. The removal rates of the strain on ammonia nitrogen and nitrate nitrogen are 99.6% and 94.22% respectively within 36 hours when the strain enters a logarithmic phase under the condition that the temperature is 30 DEG C and the salinity is 5%. The biological nitrogen removal method belongs to the technical field of novel biological nitrogen removal, nitrate nitrogen and nitrite nitrogen are not generated in the ammonia nitrogen removal process, and the biological nitrogen removal method has a good application prospect in actual application of high-salinity wastewater such as mariculture wastewater.

A low-temperature-resistant heterotrophic nitrification and aerobic denitrification bacteria is used for wastewater denitrification method, relates to a kind of biological bacteria for wastewater denitrification method, the bacteria is Pseudomonas umsongensis BK17, belongs to Pseudomonas, is preserved in China typical culture preservation center, and the preservation number is CCTCC M 20242924, and the preservation date is December 27, 2024.The strain is a heterotrophic nitrification-aerobic denitrification bacteria, can efficiently remove inorganic nitrogen pollution in water body, and still has good denitrification performance under low temperature stress, and has strong low temperature tolerance.The strain can efficiently treat nitrogen-containing wastewater at 10 DEG C, and the removal efficiency can reach more than 99%.In the inorganic nitrogen pollution treatment and application of various water bodies such as domestic sewage in cold regions of China, it has great potential.

The application provides a simulation device for nitrogen migration and transformation, which comprises an input unit, a simulation unit, a biological unit, a regulation unit and a data processing unit, the input unit is used to simulate the migration of nitrogen source input from a downstream river to a surrounding area; the simulation unit comprises a river channel simulation mechanism, a confluence triangular area simulation tank, a first side bank simulation tank of a main stream and a second side bank simulation tank of the main stream, the biological unit controls aerobic / anaerobic partition and nitrification / denitrification partition by regulating carbon source, oxygen and controlling soil structure / particle, the regulation unit is arranged in the confluence triangular area simulation tank, the first side bank simulation tank of the main stream and the second side bank simulation tank of the main stream, and is used to regulate dissolved oxygen, PH and conductivity, and the data processing unit is used to give a prediction result. The application solves the problem that a traditional water tank cannot simulate the interaction of two rivers, and improves the accuracy of simulation experiment.

The invention relates to the technical field of sewage treatment, in particular to an AOO municipal sewage treatment method. According to the method, the municipal sewage is subjected to primary carbonization treatment, secondary carbonization treatment and nitrification treatment, so that the concentration of COD (Chemical Oxygen Demand) in effluent can be reduced to be below 50mg / L, ammonia nitrogen is controlled to be below 1mg / L, total nitrogen is controlled to be below 15mg / L, and the treatment requirements can be met; meanwhile, in the method, a high linear speed is adopted in the denitrification reactor, on one hand, no bubble enrichment exists in a filler layer, on the other hand, the treatment efficiency is greatly improved, the denitrification time can be controlled within 1 h, and through a subsequent natural oxygenation method, energy consumption caused by aeration of a traditional air blower is avoided, more energy is saved, and the method is suitable for large-scale popularization and application. Meanwhile, the secondary carbonization rate of COD and the nitrification rate of ammonia nitrogen are high, the whole treatment process is faster and more efficient, more energy is saved, the environment is better protected, and the method has extremely high research value and wide application and popularization prospects.

The present application relates to the field of wastewater treatment, and particularly relates to a method for advanced denitrification of low carbon-nitrogen ratio wastewater based on short-cut nitrification and denitrification and anaerobic ammonia oxidation, which establishes an activated sludge bioaugmentation system by adding biochar immobilized ZB403 strain into an SBR activated sludge system, and domesticates the activated sludge bioaugmentation system by adjusting the component and content of simulated wastewater and optimizing the operation conditions of the bioaugmentation system, and optimizes the biological community structure in the system. The activated sludge bioaugmentation system is used for treating low carbon-nitrogen ratio wastewater, the inorganic nitrogen removal rate is above 99%, the COD removal rate is above 97%, and the sludge yield coefficient Yobs is 0.27-0.29 kgVSS / kgCOD.

The utility model provides a mode-adjustable sewage treatment system and relates to the technical field of sewage treatment. The system comprises an anaerobic tank, an anoxic tank, a facultative tank, an aerobic tank and a sedimentation tank which are sequentially communicated, wherein a facultative tank aeration device and a facultative tank submersible stirrer are arranged in the facultative tank; the system further comprises a control unit and a water quality detector, and the control unit is arranged to open or close the facultative tank aeration device and the facultative tank submersible stirrer according to a detection signal of the water quality detector. According to the mode-adjustable sewage treatment system disclosed by the utility model, the facultative tank is arranged, and nitration reaction and denitrification reaction are flexibly switched and changed, so that the phenomenon of unstable effluent caused by unstable quality and quantity of inlet water and large fluctuation of the integrated sewage treatment equipment is effectively improved and promoted; the sewage treatment effluent is stable and meets the effluent quality requirement.

The invention discloses an integrated breeding sewage treatment device and process. The device comprises a first-stage nitrification reactor, a first-stage nitrification sludge interception tank, a first-stage denitrification reactor, a first-stage denitrification sludge interception tank, a second-stage nitrification reactor, a second-stage nitrification sludge interception tank, a second-stage denitrification reactor, a second-stage denitrification sludge interception tank, a coagulation reactor, a flocculation reactor, a final sedimentation tank and a disinfection tank which are connected in sequence. According to the device and the process, multifunctional efficient treatment and low-power-consumption operation of the aquaculture sewage can be realized, and the stability of the effluent quality can be effectively guaranteed.

The application discloses a kind of intelligent regulation and control domestic sewage and initial rainwater collaborative processing system and method, comprising: S1, seriously polluted initial rainwater is separated from clean middle and late rainwater, and initial rainwater is guided to regulation and storage pool;S2, seriously polluted initial rainwater is stored in the regulation and storage pool, and water quantity and water quality are homogenized;S3, after homogenization, initial rainwater is directly introduced into the end of sewage treatment system, i.e.biochemical treatment unit;S4, introduced initial rainwater and domestic sewage from the front end of sewage treatment system are fully mixed in biochemical treatment unit, after experiencing nitrification, denitrification and organic matter degradation process, enter subsequent secondary sedimentation tank for mud-water separation, and the supernatant obtained by precipitation is discharged or reused after disinfection;By directly introducing initial rainwater into biochemical treatment unit, it avoids ineffective circulation in front-end physical treatment unit, and fully utilizes the powerful pollutant degradation capacity of biochemical treatment unit.

This invention belongs to the field of wastewater denitrification technology, specifically an integrated zoned denitrification method based on anaerobic ammonia oxidation reaction, comprising the following steps: S1, removing high concentrations of organic matter and suspended solids from wastewater through coagulation sedimentation or chemical oxidation pretreatment to avoid inhibition of subsequent Anammox treatment; S2, dividing the integrated reactor into zones, setting up a short-cut nitrification zone and an Anammox reaction zone; S3, partially recirculating the effluent from the Anammox reaction zone back to the short-cut nitrification zone to replenish nitrite and balance the carbon-nitrogen ratio; recirculating Anammox granular sludge to the reaction zone through a sedimentation zone to maintain biomass concentration and reaction efficiency; S4, setting up a secondary sedimentation tank or an internal sedimentation zone to achieve sludge-water separation, discharging excess sludge and ensuring effluent meets standards. This invention ensures stable denitrification efficiency by dynamically adjusting the dissolved oxygen in the short-cut nitrification zone and the pH value in the Anammox reaction zone.