24results about How to "Reduce aeration" patented technology

The invention provides a sewage treatment progress monitoring method and system, and the method comprises the steps: collecting and processing a first water quality parameter value of a key node of a sewage treatment facility in a historical time period, constructing a dynamic model of a sewage treatment process through a deep neural network, and introducing a genetic algorithm to optimize the structure and parameters of the dynamic model. An optimized dynamic model is obtained, the optimized dynamic model is used for predicting the sewage treatment effect, and a prediction result and operation data of the sewage treatment facility are obtained; using a fuzzy logic control algorithm to adjust the operation parameter setting value of the sewage treatment system, and using a support vector machine algorithm to classify and identify the fault mode of the sewage treatment system to obtain a fault classification result; based on the prediction result, the operation data, the optimized operation parameter setting value and the fault classification result, a comprehensive monitoring management system based on the cloud platform is constructed; according to the invention, comprehensive monitoring and fault identification of the sewage treatment process are realized, and efficient, stable and reliable operation of sewage treatment is ensured.

The invention provides a low-carbon ultra-deep denitrification method and device for town sewage, belongs to the field of sewage treatment, and is used for town sewage treatment. In a continuous flow anaerobic-aerobic anoxic alternating-post anoxic process, town sewage and refluxed heavy sludge enter an anaerobic zone of a biochemical pool, refluxed light sludge and added hydroxylamine enter an aerobic anoxic alternating zone of the biochemical pool, and a sludge-water mixed solution flowing out of a post anoxic zone of the biochemical pool enters a secondary sedimentation tank for sludge-water separation; and discharging the supernatant as effluent, separating the precipitated sludge into heavy sludge and light sludge in a cyclone separator, refluxing the heavy sludge and part of the light sludge into the process according to the mode, and discharging part of the light sludge as residual sludge. Microorganisms in the sludge store an internal carbon source in an anaerobic zone of the biochemical pool, short-cut nitrification-endogenous denitrification is realized in an aerobic-anoxic alternating zone of the biochemical pool, and ultra-deep endogenous denitrification nitrogen removal is realized in a rear anoxic zone of the biochemical pool. According to the invention, low-carbon ultra-deep nitrogen removal of town sewage can be realized.

The invention belongs to the field of sewage treatment processes. The front pollutant enrichment sludge discharge energy-saving AAO process comprises the following steps: step 1, carrying out sewage filtration treatment; 2, the pretreated sewage enters an anaerobic tank, and a stirrer is arranged in the anaerobic tank for stirring; 3, the sewage above the side drainage tank enters an anoxic tank, and a stirrer is arranged in the anoxic tank for stirring; 4, the sewage treated in the step 3 enters a settling pond, sludge is settled to the bottom through the settling pond, and treated clear water on the upper layer is discharged; all sludge in the sedimentation tank flows back into the anaerobic tank, part of the sludge after adsorption and absorption of carbon source organic substances enters the side discharge tank, and the side discharge tank discharges the sludge regularly; the process is simple to operate, low in cost and better in economic benefit, the incoming water load of a biochemical unit can be reduced, and the impact on a biochemical system caused by large fluctuation of the incoming water concentration can be relieved.

The utility model discloses an aquaculture wastewater up-to-standard discharge treatment device which comprises a sludge storage tank, a solid-liquid separator, a stock solution tank, a regulating tank and an integrated aquaculture wastewater treatment device, the integrated culture wastewater treatment device comprises an up-flow anaerobic granular sludge treatment unit, an activated sludge treatment unit, a short-cut nitrification-anaerobic ammonia oxidation treatment unit and a contact oxidation treatment unit, wherein the short-cut nitrification-anaerobic ammonia oxidation treatment unit improves the sludge activity by forming hydroxyapatite carrier type anaerobic ammonia oxidation granular sludge, and realizes synchronous nitrogen removal and phosphorus recovery. The inclined tube assemblies and the hollow folded plate type precipitators are arranged in the units of the integrated treatment device, so that the precipitation water conservancy condition is improved, the precipitation effect is improved, and the effluent can meet the discharge standard of pollutants in the livestock and poultry industry. The integrated device has the advantages of compact structure, small occupied area, small aeration rate, low sludge yield and synchronous low-carbon nitrogen removal and phosphorus resource recovery.

The invention discloses an aquaculture integrated anaerobic ammonia oxidation denitrification device and a process thereof, and relates to the technical field of sewage treatment.The aquaculture integrated anaerobic ammonia oxidation denitrification device comprises a tank body, an exhaust port is formed in the top of the tank body, a drain outlet is formed in the bottom of the tank body, and a water outlet and a water inlet are formed in the side wall of the tank body; the interior of the tank body is divided into a clear water area, a PD / A reaction area, an anaerobic reaction area, a vertical flow precipitation area and a sewage collection area from top to bottom, and water quality detection ports are formed in the side walls, located in the anaerobic reaction area and the PD / A reaction area, of the tank body. Breeding tail water enters the tank body from the vertical flow sedimentation area and passes through the anaerobic reaction area and the PD / A reaction area, clear water enters the clear water area to be discharged, and sludge enters the sewage collection area to be discharged. And the defect that the traditional nitrification and denitrification nitrogen removal reaction process is not suitable for large-flow and low-nitrogen pollution load aquaculture water treatment is overcome.

The utility model provides a kind of etching cavity for realizing process gas quick switching, and etching cavity includes plasma source chamber and reaction chamber, and the upper surface of reaction chamber is equipped with the gas inlet of process gas;Quick gas replacement device includes the gas pipeline, gas control assembly and gas inlet pipeline that are sequentially communicated along process gas gas inlet direction;Gas pipeline is communicated with process gas gas source, and gas inlet pipeline is communicated with gas inlet;Gas control assembly includes the input, gas inlet valve, flow controller, process gas branch and output that are sequentially communicated along process gas gas inlet direction;Input is communicated with gas pipeline, and output is communicated with gas inlet pipeline;Gas control assembly is also equipped with fixed plate, and fixed plate is installed in plasma source chamber, and the input, gas inlet valve, flow controller, process gas branch and output are sequentially installed in the fixed plate.The utility model solves the problem that deposition gas and etching gas are difficult to quickly switch and accurately control in quick alternate process.

The utility model discloses a short-cut nitrification coupling anaerobic ammonia oxidation integrated reactor, a perforated plate is arranged in the reactor, and a first part for short-cut nitrification and a second part for anaerobic ammonia oxidation are respectively distributed on the upper side and the lower side of the perforated plate; sludge of nitrite bacteria is attached to the interior of the first part through a first filler so as to fix aerobic bacteria, and the first part is connected with an aeration source; anaerobic ammonia oxidizing bacteria are fixed in the second part through a second filler; the size of the filler is greater than the hole size of the perforated plate; the second part is provided with a muddy water backflow and separation module; the muddy water backflow and separation module comprises the muddy water separation area and a sludge backflow area which is integrally connected with the muddy water separation area; a water outlet pipe is connected into the mud-water separation area and is used for separating and discharging aged sludge. The reactor can stabilize the growth of dominant bacteria and improve the denitrification treatment effect.

The invention belongs to the technical field of sewage treatment, and particularly relates to integrated intelligent anaerobic denitrification equipment which comprises an equipment main body, an aeration pipe and an inclined plate filler, a water inlet pipe is arranged at the top of one side of the equipment main body, and the equipment main body is connected with an external wastewater supply mechanism through the water inlet pipe; a backflow pipe is arranged at the bottom of the equipment body, a thermometer is arranged at the top of the equipment body, a dissolved oxygen meter is arranged on one side of the thermometer, an aeration pipe is arranged on one side in the equipment body, and an aeration disc is arranged at the bottom of the aeration pipe. By arranging the aeration disc, the aeration pipe, the inclined plate filler, the guide plate, the biological filler, the reflux pipe and the reflux pump, the equipment consists of three groups of areas, namely an aeration area, a settling area and an ammoxidation biological deoxidation area, and the equipment adopts multifunctional subareas to create an environment suitable for efficient growth of ammoxidation bacteria; the mass-propagated ammonia oxidizing bacteria can form biological cenobium, compared with the traditional process, the volume load is greatly improved, the denitrification efficiency is improved through a biological method, and meanwhile, the operation cost is saved.

The invention discloses a biochemical tower equipped with a high-efficiency cyclone aerator and a sedimentation tank, comprising an outer cylinder of the biochemical tower, wherein an arched cover plate is arranged on the top of the outer cylinder of the biochemical tower, and an observation hole, a breathing valve and an exhaust gas outlet are arranged on the arched cover plate; a sewage inlet, an air inlet, a sludge outlet, a water outlet and a manhole are respectively arranged on the side walls of the outer cylinder of the biochemical tower; an inner cylinder is arranged in the outer cylinder of the biochemical tower, and the inner cylinder is arranged on the central axis of the outer cylinder of the biochemical tower, and the inner cylinder comprises a cylinder and a cone bucket, the cylinder is connected to a cone, the cone is arranged in the lower section of the outer cylinder of the biochemical tower, and the cone is arranged in the bottom of the outer cylinder of the biochemical tower through a support; the bottom of the cone is connected to the sludge outlet through a sludge discharge pipe; a guide pipe is arranged in the inner cylinder, a guide channel is arranged on the top of the guide pipe, a water distributor is arranged on the bottom of the guide pipe, a water outlet weir is arranged on the inner cylinder, and the water outlet weir is connected to the water outlet through a pipeline.

The invention relates to a process for synchronously realizing deep denitrification and in-situ sludge reduction, and belongs to the field of biological sewage treatment. A device involved in the process mainly comprises a water inlet barrel, a UASB reactor, a middle water tank and an SBR reactor which are connected in sequence; wherein the UASB reactor is respectively provided with two water inlets, raw water enters from the first water inlet, the first water inlet is positioned at the bottom of the UASB reactor, and the second water inlet is arranged on the side wall of the UASB reactor; and outlet water of the SBR is connected with the UASB reactor through a second water inlet by a water outlet bucket. The UASB reactor is divided into an anaerobic zone and an anoxic zone due to the position of the second water inlet; and low-oxygen aeration is adopted in the SBR reactor to realize synchronous nitrification and denitrification. According to the process, organic matters in raw water can be effectively utilized to achieve the purpose of deep denitrification, and in-situ reduction of sludge can be realized by synchronous nitrification and denitrification in the SBR reactor.

The invention discloses a device for controlling the pH value of feedwater raw water through micro-nano bubble liquid generated by reinforcing carbon dioxide dissolution coupling cold energy recovery, and belongs to the technical field of feedwater treatment. The device comprises a cold water tank, a pressure pump, a dissolved air tank, a pressure relief tank, a pH regulating tank, a water inlet and outlet system and a PLC control box, according to the device, water and carbon dioxide are efficiently mixed through sudden change of the flow rate and pressure of liquid in a venturi tube of a dissolved air tank; according to the device, the water temperature is reduced through cold energy released during heat absorption gasification of liquid carbon dioxide for subsequent gas dissolving in the gas dissolving tank, and the cold energy released during gasification of the carbon dioxide is fully utilized to reduce the water temperature to promote gas dissolving; according to the device, the gas dissolving amount under the pressure reduction condition is further guaranteed through the pressure relief tank and the venturi tube, so that gas dissolving water rich in carbon dioxide micro-nano bubbles is stably generated and used for being mixed with raw water of a water supply plant according to different proportions, then pH control is achieved, and the utilization rate of carbon dioxide is increased.

The utility model relates to the technical field of wastewater treatment, in particular to a low-carbon biological treatment system which comprises a pretreatment module, a decarbonization module and a biological denitrification module, the pretreatment module comprises an adjusting tank and a pretreatment section, the adjusting tank is used for homogenizing and homogenizing wastewater entering the adjusting tank, and the pretreatment section is used for removing toxic and harmful pollutants which cannot be biologically degraded; the decarburization module comprises an aeration tank and a sedimentation tank and is used for removing organic matters in the wastewater. An MABR reaction zone and an anaerobic ammonia oxidation reaction zone are integrated into an up-flow reactor, an MABR reaction layer and an anaerobic ammonia oxidation reaction layer are formed in the reactor, multifunctional pollutant removal can be achieved, meanwhile, a pipeline for sludge dredging and discharging is arranged, it is guaranteed that the two processes can complement each other, partition reaction can be achieved, and the effect that the two processes can be recycled is achieved. And the function is not influenced by integrated design.

The present invention discloses a decentralized low-carbon sewage treatment device and method based on anaerobic ammonia oxidation, the device includes a sewage inlet tank for receiving external raw water, which can transport the raw water to a UASB reactor and a continuous flow reactor respectively in proportion; the UASB reactor is used to convert organic matter in the raw water into methane; a suspended anaerobic ammonia oxidation bacteria filler is added in the continuous flow reactor, and raw water denitrification is achieved through short-range nitrification / anaerobic ammonia oxidation and short-range denitrification / anaerobic ammonia oxidation, and the hydraulic retention time in the anoxic zone is extended to achieve synchronous in-situ fermentation of sludge, and a check gate is set to solve the problem of sludge back mixing; the secondary sedimentation tank precipitates the raw water after denitrification, and returns part of the sludge to the continuous flow reactor. The present invention does not need to add additional carbon sources, effectively solves the problem of back mixing in the reaction zone, realizes the resource utilization of decentralized sewage organic matter and sludge reduction generated in highway service areas, etc., and has the characteristics of high denitrification efficiency, stable performance and effective reduction of carbon emissions.

The application discloses a kind of multistage cooperative biological denitrification and nitrous oxide control system and method.The system includes sequentially connected urban sewage raw water tank, AMOA reactor and sedimentation tank, wherein AMOA reactor includes sequentially communicated anaerobic zone, MABR membrane zone, aerobic zone and post-anoxic zone.The method includes: urban sewage with carbon-nitrogen ratio ≤4 is passed into system, MABR membrane zone is controlled to use periodical exhaust mode to carry out bubbleless aeration, dissolved oxygen concentration of aerobic zone is controlled to be 1.5-2.5 mg / L, hydraulic retention time is controlled to be 7.8 h and continuously operated.The application is under the condition that the carbon-nitrogen ratio of influent is ≤4, total nitrogen in effluent is stably lower than 10 mg / L (average 6.4 mg / L), removal rate reaches more than 80%;without additional carbon source, only single-stage sludge return is retained, aeration energy consumption is reduced by more than 38%, N2O emission is reduced by more than 96%;hydraulic retention time is only 7.8 h, which is shortened by more than 35% compared with traditional process;and can be based on existing AAO process in situ modification, with significant investment, short cycle, has obvious popularization and application prospect.

The utility model belongs to the field of membrane equipment, and particularly relates to an integrated curtain type membrane fixing support and curtain type membrane equipment. The integrated curtain type membrane fixing support comprises a support body and a plurality of curtain type membrane connecting structures which are arranged on the support body and connected with a curtain type assembly. The curtain type membrane connecting structure comprises a sliding chute fixed on the bracket main body; the curtain type membrane component comprises water collecting boxes which are arranged up and down and a membrane tow which is arranged between the two water collecting boxes; a sliding rail matched with the sliding groove is arranged on the water collecting box. According to the integrated curtain type membrane fixing support, the sliding grooves matched with the curtain type membrane assemblies are formed, so that the integrated curtain type membrane fixing support has the guiding and hanging functions, the installation difficulty of the membrane assemblies is reduced, and the manpower and hoisting machine cost is effectively reduced.

The present invention belongs to the technical field of environmentally friendly sewage and waste gas treatment equipment, specifically a high-efficiency full-process denitrification reactor. A separate reaction room can most stably maintain and enhance the short-range denitrification reaction process, a recovery mechanism can recover dissolved oxygen, and a control and sensing mechanism can enhance precise control. It includes a full-type biological reaction tower and a strong reaction type reactor, and the strong reaction type reactor includes a main reaction tank, a bell-type mixing chamber, an oil filter absorber, and a reaction oxygen supplier; a reaction filter frame surrounded by a biological reaction microfiltration membrane is arranged in the center of the main reaction tank, and the reaction filter frame divides the entire main reaction tube into an inner high-oxygen reaction chamber inside the reaction filter frame and an equivalent reaction chamber outside the reaction filter frame. An oil filter absorber is arranged at the bottom of the main reaction tank, and a repeated jet suction filter head of the oil filter absorber is inserted at the bottom of the main reaction tank; the bell-type mixing chamber is arranged in the inner high-oxygen reaction chamber.

The invention provides a biological contact oxidation method and a biological contact oxidation system, which are applied to the technical field of water pollution control and treatment, and the method comprises the following steps: introducing sewage into a reaction tank of the biological contact oxidation system, and treating the sewage based on an iron-carbon filler and activated sludge in the reaction tank; wherein microorganisms in the iron-carbon filler and the activated sludge are subjected to a coupling reaction to jointly treat the sewage. According to the biological contact oxidation method and system provided by the invention, an acidic biofilm is formed on the surface of the iron-carbon filler by using microorganisms to provide an acidic environment and promote the generation of micro-electrolysis, decomposed iron ions can enhance the settling performance of activated sludge and enhance the sewage dephosphorization effect, and activated carbon can adsorb pollutants in sewage, so that the sewage treatment effect is improved. The sewage purification effect is improved. The iron-carbon filler has the effect of promoting short-cut nitrification and denitrification of microorganisms, the required aeration rate is low, and energy conservation and consumption reduction are facilitated. The whole process does not need to add an acid-base agent, so that the process is simplified, and the influence on the sewage purification effect is avoided.

The invention discloses a device and a method for strengthening efficient denitrification of oxytetracycline pharmaceutical wastewater by coupling integrated short-cut nitrification with post-denitrification, belongs to the field of biological sewage treatment, and is used for treating the oxytetracycline pharmaceutical wastewater. The oxytetracycline wastewater treatment system comprises an oxytetracycline wastewater inlet water tank, a water inlet pump, a water inlet pipe, a sequencing batch reactor, a mechanical stirrer, a pH value and dissolved oxygen tester, a temperature control system, a sampling port, a drain valve, a mud valve, a gas flowmeter, an air compression pump and an aeration head, and the discharge standard of fermentation type pharmaceutical wastewater can be met. The method has the characteristics of quick start, no external carbon source, good denitrification effect, simple operation and low cost, and is suitable for denitrification treatment of oxytetracycline biopharmaceutical wastewater.

This invention relates to a high NH4 content + ‑N, high NO3 — -N and high F — The high-efficiency, low-consumption treatment process for photovoltaic wastewater involves initially removing fluoride from the wastewater, which then enters a synergistic short-cut denitrification tank. Through the synergistic effect of heterotrophic short-cut denitrification and sulfur autotrophic short-cut denitrification in the tank, NO3... — -N denitrification reaction controlled at NO2 — This step, involving the addition of nitrogen (N), avoids full-scale denitrification by combining the effluent from short-cut denitrification with high NH4 levels. + -N silane wastewater is mixed in an intermediate tank and then undergoes efficient denitrification via an anaerobic ammonia oxidation (AAO) reactor. The effluent from the AAO reactor enters the MABR (Maintenance-Based Bioreactor) tank. The unique layered structure of the MABR biofilm ensures that nitrification / short-cut nitrification, AAO, and denitrification / short-cut denitrification reactions occur in the same reactor, achieving deep denitrification and removal of residual COD. This process achieves acid-base balance during the biochemical reactions, saving 100% of the acid and alkali dosage. Sludge production is only 10% of that of traditional denitrification processes under the same load, significantly reducing operating costs.

The single-tower multi-stage self-circulation sewage treatment device with the built-in partitions comprises a tower body, a water inlet pipe, a water outlet pipe and a cross-shaped partition plate, the tower body is divided into an aeration area, an aerobic area, an anoxic area and an anaerobic area by the cross-shaped partition plate, and an aeration disc is arranged at the bottom of the aeration area; the aerobic zone, the anoxic zone, the anaerobic zone and the aeration zone are communicated through the first circulating column, the second circulating column, the third circulating column and the fourth circulating column, and granular sludge is inoculated in the aerobic zone, the anoxic zone and the anaerobic zone. The sewage treatment method comprises the following steps: a) self-circulation; b) carrying out denitrification reaction; c) aeration reaction; d) carrying out aerobic reaction; and e) carrying out anoxic reaction. According to the single-tower type multi-stage self-circulation sewage treatment device with the built-in partitions and the method, the whole device adopts a single-tower body, so that the space utilization rate is high, the arrangement is convenient, and an external power source is not needed; and a corresponding control strategy is adopted, so that the removal effect of ammonia nitrogen and organic matters in the sewage is ensured.

The invention provides a treatment method of petrochemical alkali residue wastewater. The treatment method comprises the following steps: (1) adding inorganic acid into the alkali residue wastewater for neutralization; (2) adding sewage into the neutralized alkaline residue wastewater for dilution so as to reduce the COD value of the alkaline residue wastewater; (3) carrying out primary biochemical degradation on the diluted alkaline residue wastewater, wherein a treatment system for the primary biochemical degradation comprises an MABR unit; and (4) enabling effluent of the MABR unit to enter a sedimentation tank, and carrying out secondary biochemical degradation on supernate of the sedimentation tank. According to the treatment method provided by the invention, the aeration membrane of the MABR unit reduces the gas-liquid mass transfer resistance and improves the oxygen utilization rate; oxygen in a biological membrane of the MABR unit and a substrate are transmitted in different directions, the biological membrane is high in adhesive force and not prone to falling off, the microbial activity is high, the pollutant removal efficiency is high, and the system is high in impact resistance and stable in operation; bubble-free aeration is realized, the aeration quantity is small, and the energy consumption is low; and the discharge amount of waste gas is greatly reduced.

The present invention relates to the technical field of sewage treatment, and in particular to a low-power rural sewage treatment system based on wind-solar complementary power generation, comprising a multifunctional anoxic tank, a fixed-bed biofilm anoxic tank, a fixed-bed biofilm aerobic sedimentation tank and a fan connected in sequence; the fan is connected to the fixed-bed biofilm anoxic tank and the fixed-bed biofilm aerobic sedimentation tank through pipelines, and a two-position five-way solenoid valve is provided on the pipeline, and the two-position five-way solenoid valve is used to connect the fixed-bed biofilm anoxic tank with the fan or connect the fixed-bed biofilm anoxic tank with the atmosphere or connect the fan with an aeration device. The present invention sets two stirring modes of "natural water inlet stirring" and "pulse pressure circulation stirring" in the fixed-bed biofilm anoxic tank, which improves the stirring efficiency while reducing energy consumption; at the same time, the fixed-bed biofilm aerobic sedimentation tank adopts air pressure gas water inlet, which greatly reduces energy consumption compared with traditional water pump air lift, reduces dissolved oxygen introduction, and improves carbon source utilization.

This invention provides a method and apparatus for low-carbon, ultra-deep denitrification of urban wastewater, belonging to the field of wastewater treatment and applied to urban wastewater treatment. In a continuous flow anaerobic-aerobic-anoxic alternating-post-anoxic process, urban wastewater and returned heavy sludge enter the anaerobic zone of a biological treatment tank. Returned light sludge and added hydroxylamine enter the aerobic-anoxic alternating zone of the biological treatment tank. The sludge-water mixture flowing out of the post-anoxic zone of the biological treatment tank enters a secondary sedimentation tank for sludge-water separation. The supernatant is discharged as effluent, and the settled sludge enters a hydrocyclone separator to be separated into heavy sludge and light sludge. The heavy sludge and part of the light sludge are returned to the process as described above, and part of the light sludge is discharged as excess sludge. Microorganisms in the sludge store internal carbon sources in the anaerobic zone of the biological treatment tank. Short-cut nitrification and endogenous denitrification are achieved in the aerobic-anoxic alternating zone of the biological treatment tank. Ultra-deep endogenous denitrification is performed in the post-anoxic zone of the biological treatment tank. This invention can achieve low-carbon, ultra-deep denitrification of urban wastewater.

The invention discloses a low-oxygen nitrification and denitrification synchronous domestic sewage treatment system and method, which are mainly driven by whole-course nitrifying bacteria to complete a nitrification process and synchronously promote the realization of a denitrification process, realize the synchronous treatment of nitrification and denitrification of domestic sewage in the same reaction device, improve the denitrification efficiency of a single tank, and improve the denitrification efficiency of the single tank. The energy consumption and the operation cost are reduced. The system mainly comprises a water inlet tank, a low-oxygen nitrification and denitrification synchronous reaction tank, a DO control unit and a mud-water separation device. The DO value in the low-oxygen nitrification and denitrification synchronous reaction tank is controlled to be not greater than 0.5 mg / L. The device has the advantages of being simple in structure, saving investment cost and operation cost and the like.