308 results about "Oxidation pond" patented technology

The invention provides an environment-friendly fabric printing and dyeing wastewater treatment system and method, and belongs to the technical field of wastewater treatment. An environment-friendly fabric printing and dyeing wastewater treatment system at least comprises a water storage tank, two flocculation tanks, two sedimentation tanks, a transition tank, an oxidation tank, a secondary sedimentation tank, a BAF tank, a disinfection tank and a discharge tank which are connected in sequence, the two flocculation tanks are connected to the water storage tank at the same time, the two sedimentation tanks are connected to the two flocculation tanks in a one-to-one correspondence mode, and the two sedimentation tanks are connected to the BAF tank in a one-to-one correspondence mode. The two sedimentation tanks are connected to the transition tank at the same time; adding a flocculating agent and magnetic powder into the flocculation basin at the same time; each sedimentation tank is internally provided with a treatment mechanism for accelerating sedimentation of magnetic flocs and rapidly removing suspensions, each sedimentation tank is internally provided with a water outlet assembly capable of being adjusted in height, and the water storage area of the transition tank is lower than the water outlet assembly. The sewage treatment device has the advantage of improving the sewage treatment efficiency.

The invention relates to the technical field of electrocatalytic oxidation devices, and discloses an electroplating rinse sewage complex breaking electrocatalytic device based on titanium-based nano conductive ceramics, which comprises an oxidation pond and an acquisition module, the acquisition module acquires catalytic liquid information in real time, and the catalytic liquid information comprises components and state data of a catalytic liquid. And the catalysis module is responsible for treating a catalytic liquid and destroying a complex by utilizing an electro-catalysis reaction. The central control module analyzes complex components of a catalyst through a convolutional neural network (CNN) and a recurrent neural network (RNN), and dynamically adjusts electro-catalysis parameters on the basis of a fuzzy control algorithm in combination with historical data and real-time information so as to optimize the catalytic effect. And the early warning module monitors the changes of the catalytic liquid and the electro-catalysis parameters, judges whether early warning needs to be given out or not by comparing the changes with a preset threshold value, and takes corresponding measures according to the risk level. Through real-time data analysis and intelligent control, the accuracy and efficiency of the catalysis process are improved, and the safety and stability of the treatment process are ensured.

The invention belongs to the technical field of wastewater treatment, and particularly relates to an activated sludge water treatment system and method.The activated sludge water treatment system comprises a contact oxidation pond, an intelligent filter and a control system, a microbiological treatment system comprises a microbiological community monitoring module and a microbiological regulation and control module, and the microbiological community monitoring module comprises a high-throughput sequencing analysis unit and an early warning trigger unit. The early warning trigger unit comprises an early warning data receiver and an alarm. The microbial regulation and control module comprises a microbial data collection unit and a microbial agent adding unit. The microbial agent adding unit comprises a microbial agent storage tank, a microbial agent blending module and an adding and conveying module. According to the activated sludge water treatment system provided by the invention, the high-throughput sequencing analysis unit, the early warning trigger unit, the microbial data collection unit and the microbial agent adding unit work cooperatively, so that the whole-process intelligent management from real-time monitoring of microbial communities, imbalance early warning to precise regulation and control is realized, and the water environment quality is improved.

The invention discloses a method for deeply removing total nitrogen in water through autotrophic-heterotrophic sulfur denitrification and application, and relates to the technical field of sewage treatment deep deamination. Comprising the following steps: S1, putting a suspended sulfur carrier into a biological contact oxidation pond; s2, sulfur autotrophic denitrification strains are added into the biological contact oxidation pond, the adding amount of the strains is 2-5 kg / m < 3 > of a carrier, and stuffy aeration is conducted for 48-240 hours after water is fed; s3, after changing the water, adding a sulfur heterotrophic denitrification strain into the biological contact oxidation pond according to the addition amount of 2-3 kg / m < 3 > of the carrier, and carrying out stuffy aeration for 24-48 hours; s4, group sensing factors are added into the biological contact oxidation pond, the adding amount is 0.01-0.03 / kg / m < 3 >, and stuffy aeration is conducted for 24 h; and S5, introducing to-be-treated sewage for denitrification. According to the sewage treatment method disclosed by the invention, under the condition that the organic matter content (COD value) is relatively low, a carbon source does not need to be additionally added to remove total nitrogen, so that the effluent reaches the IV-class standard of surface water.

The utility model relates to an oilfield produced water treatment system which comprises two stages of air floatation tanks, a coagulating sedimentation device, an oxidation tank, a high-power concentration membrane device and a forced evaporation device which are connected in sequence, a floating oil water outlet of a first-stage air floatation tank is connected with a second-stage air floatation tank, and a clear liquid water production port is connected with the coagulating sedimentation device; the coagulating sedimentation device comprises a tubular membrane system and a solid-liquid separation device, a liquid inlet of the tubular membrane system is connected with the primary air floatation tank, a mud-containing water outlet is connected with the solid-liquid separation device, and a permeated water production port is connected with the oxidation tank; the oxidation pond is provided with two stages, and an outlet of the second-stage oxidation pond is connected with the high-power concentration membrane device; the high-power concentration membrane device comprises a disc-type reverse osmosis membrane and a disc-type nanofiltration membrane, an inlet of the disc-type reverse osmosis membrane is connected with the secondary oxidation pond, a concentrated water outlet is connected with the disc-type nanofiltration membrane, and an outlet of the disc-type nanofiltration membrane is connected with the forced evaporation device; according to the oil field produced water treatment device, advanced oxidation and disc-type membrane processes are coupled, and oil field produced water can be effectively treated and can be recycled.

The invention relates to the technical field of sewage treatment, in particular to a system for efficiently treating livestock and poultry breeding sewage by utilizing algal-bacterial symbiosis, which comprises a solid-liquid separation module arranged on the ground, the solid-liquid separation module comprises a water inlet pipe, a separation box and a filter basket, a nitrification and denitrification tank is arranged on the top of the ground, and a stirring assembly is arranged in the nitrification and denitrification tank; the chemical phosphorus removal module comprises a coagulation, flocculation and sedimentation tank and a stirring assembly, the coagulation, flocculation and sedimentation tank is arranged on the ground, and the stirring assembly is arranged in a coagulation and flocculation area in the coagulation, flocculation and sedimentation tank; according to the system for efficiently treating the livestock and poultry breeding sewage by utilizing the bacterial-algae symbiosis, compared with an existing method for removing the total nitrogen content in the sewage by independently utilizing microorganisms, pollutants in the sewage are synergistically removed in the oxidation pond by utilizing a bacterial-algae symbiosis structure, microalgae and bacteria, so that the energy consumption and the carbon source are saved, and the environmental pollution is reduced. Meanwhile, the sewage treatment effect is improved.

The invention relates to the field of sewage treatment, and discloses a sewage treatment method based on desulfurization and denitrification, which comprises the following steps: S1, magnetic flocculation-electro-catalysis pretreatment: adding a polyaluminum chloride-magnetic powder composite flocculant into sewage through a magnetic flocculation reactor to form a magnetic floc, removing suspended matters through a permanent magnetic separation device, and then entering an electro-catalysis oxidation pond, carrying out electrolysis by taking titanium-based lead dioxide as an anode and active carbon fiber as a cathode; and S2, performing synchronous desulfurization and denitrification on the three-dimensional electrode fluidized bed, feeding pretreated effluent into a three-dimensional electrode fluidized bed reactor, filling activated carbon particles as a third electrode, and adding a composite flora of thiobacillus and denitrifying bacteria. The efficient removal of sulfides, total nitrogen, total phosphorus and chemical oxygen demand in the sewage is realized through a multi-stage synergistic process of magnetic flocculation-electrocatalysis pretreatment, synchronous desulfurization and denitrification of a three-dimensional electrode fluidized bed, deep denitrification and dephosphorization of a denitrification filter tank and catalytic ozonation-membrane separation combined deep treatment.

The utility model discloses a high-salt organic wastewater ozone catalytic oxidation system, and particularly relates to the technical field of wastewater treatment.The high-salt organic wastewater ozone catalytic oxidation system comprises an ozone generator and an ozone oxidation pond assembled on one side of the ozone generator, an ozone concentration monitor is installed on one side of a rotor flow meter, and one side of the ozone concentration monitor is connected with a three-way pipe; an air pump is connected to the rear end of the three-way pipe, a filtering mechanism is mounted on one side of the three-way pipe, a first electromagnetic valve is mounted at the joint of the three-way pipe, the ozone concentration monitor and the filtering mechanism, and a first aeration pipe and a second aeration pipe which are staggered with each other are connected to one side of the air pump through shunt pipes respectively. According to the utility model, the first electromagnetic valve is mounted, so that gas conveyed by the gas pump can be controlled according to treatment requirements by controlling the first electromagnetic valve during use, and the aeration treatment effect is improved; wastewater at different positions in the ozone oxidation pond can be treated by utilizing the first aeration pipe and the second aeration pipe at different positions.

The present invention proposes a water treatment system that couples anoxic biofilters with artificial wetlands, belonging to the field of water treatment technology. The key technical points are: sewage is collected through a pipe network and flows into a water collection pool, and then enters a regulating / anoxic pool through a lift pump. The solid carbon source in the pool provides a carrier for microorganisms while achieving slow-release supplementation of the carbon source, thereby strengthening the denitrification reaction to remove total nitrogen. The system is then transported to a biofilter and a contact oxidation pool by a lift pump, and COD and ammonia nitrogen are removed through carbon oxidation and nitrification reactions. The effluent enters a high-efficiency clarifier, and after most of the total phosphorus and SS are removed through chemical phosphorus removal and coagulation and sedimentation, the overflow enters an artificial wetland, and is subjected to a comprehensive treatment of plant-microorganism-filler to deeply purify the pollutants and meet the discharge standards. Using the water treatment method of the present application, the effluent water quality can be improved to the Class B emission standard.

The embodiment of the invention discloses an aeration fan control method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring historical oxygen demand and historical ammonia nitrogen concentration of a contact oxidation pond in a sewage treatment system in a first time period; determining a target oxygen demand of the contact oxidation pond in a second time period based on the historical oxygen demand, the historical ammonia nitrogen concentration and an oxygen demand prediction model; based on the current ammonia nitrogen concentration, the current reaction temperature and the current oxygen mass transfer coefficient corresponding to the current collection moment in the second time period of the contact oxidation pond, determining the incidence relation between the fan frequency and the dissolved oxygen concentration corresponding to the current collection moment; and the current fan control strategy corresponding to the current acquisition moment is determined based on the association relationship between the fan frequency corresponding to the current acquisition moment and the dissolved oxygen concentration and the target oxygen demand, so that dynamic control of the aeration fan can be accurately and conveniently realized, the control accuracy of the dissolved oxygen concentration is improved, and the operation cost is saved.

The utility model discloses a printing and dyeing and industrial wastewater purification and micro-nano plastic removal device. The device comprises a pH regulating tank, an oxidation tank, a filtering assembly, a stirring assembly and an adsorption assembly, sodium sulfate is added into the pH adjusting tank; the oxidation pond is provided with sodium hypochlorite, the filtering assembly comprises a filtering tank body, and wastewater is filtered through a filtering layer in the filtering tank body; the filtered wastewater enters the stirring assembly; a stirring motor in the stirring assembly is used for controlling a stirring shaft to rotate, turbine blades are driven to rotate and stir, and micro-nano plastic in water is fully adsorbed in a stirring mode in cooperation with a micro-nano plastic adsorbent added into a stirring container; by electrifying the electromagnet on one side of the stirring container and recycling the magnetic micro-nano plastic adsorbent, the micro-nano plastic and the added magnetic adsorbent in the wastewater can be removed, the wastewater purification and the micro-nano plastic removal can be efficiently realized at the same time, and the recycling and reutilization of water resources can be realized.

The invention relates to the technical field of wastewater advanced treatment and zero emission, in particular to an ozone catalytic oxidation and degassing wastewater advanced treatment system and process. The wastewater treatment system comprises an ozone catalytic oxidation system and an activated carbon degassing system. The advanced wastewater treatment process comprises the following steps: conveying wastewater to a catalytic ozonation pond, adding ozone into the pond in stages, enabling the wastewater to enter the catalytic ozonation pond again through a secondary mixing device, and carrying out catalytic oxidation reaction under the action of ozone; pretreated sewage automatically flows into an activated carbon filter tank, an activated carbon loaded manganese dioxide catalyst is adopted as a filter material in the activated carbon filter tank, and meanwhile, an ultraviolet or near-infrared irradiation device is arranged and cooperates with activated carbon and electromagnetic waves to treat residual ozone. The ozone catalytic oxidation and activated carbon degassing combined advanced wastewater treatment process adopted by the invention is advanced and mature, small in occupied area, low in operation cost, simple in process, high in automation degree and extremely low in sludge yield, and can realize comprehensive and efficient removal of pollutants in high-salinity wastewater; valuable technical support and engineering instance reference can be provided in the field of wastewater advanced treatment and zero emission.

The utility model provides a concrete admixture production sewage treatment system which comprises sewage treatment equipment, a PLC (Programmable Logic Controller) and an oxygen storage tank, the sewage treatment equipment is arranged outside a concrete admixture processing plant, and a sealing cover is arranged at the top of the sewage treatment equipment; a plurality of reaction areas such as a grating tank, a regulating tank, a sludge tank, a clean water tank, an oxidation tank, a coagulation reaction tank, a coagulation sedimentation tank, a secondary reaction tank, a secondary sedimentation tank, an intermediate tank I and an intermediate tank II are arranged in the device. According to the system disclosed by the utility model, a partitioned module design is adopted, different module functions can be flexibly customized and designed according to different water qualities, the applicability of the system is improved, and sewage treatment equipment is simple in structure, small in occupied area and low in cost. The sewage treatment equipment with integrated design and the internal treatment units are mutually connected, so that the connection of pipelines is greatly reduced, communication can be realized only by punching holes in the inner wall, and the sewage treatment cost is greatly saved.

The invention relates to an ecological balance water circulation system and a water quality monitoring method, and relates to the technical field of water resource treatment.The system comprises a pretreatment module, a biochemical treatment module, an advanced treatment module and a recycling module which are sequentially connected; the pretreatment module comprises a grating channel, a regulating tank and a sedimentation tank which are connected in sequence; the biochemical treatment module comprises a hydrolysis acidification tank, a biological contact oxidation tank and a sedimentation tank which are connected in sequence; the deep treatment module comprises a coagulative precipitation tank, a sand filter tank and an activated carbon adsorption tank which are connected in sequence; and the recycling module comprises a clean water tank and a recycling pipeline which are connected in sequence. The method comprises the following steps: S1, collecting a water sample; s2, pretreating a water sample; s3, water quality index detection; and S4, data analysis and processing. According to the invention, cyclic utilization of water resources can be realized, waste of the water resources is reduced, water quality can be monitored in real time, and safety of the water quality is ensured.

One embodiment provides a method for measuring the amount of total organic fluoride content of a PFAS-containing sample, the method comprising: placing a sample comprising a PFAS compound into a measurement device, where the measurement device comprises an oxidation pond and a non-oxidation pond, where the oxidation pond comprises a boron-doped diamond electrode; measuring the amount of total inorganic fluoride of the sample prior to oxidation using the measuring device; applying an electric potential to a portion of the sample in the oxidation pond, wherein the electric potential oxidizes the PFAS compound; measuring an amount of total organic fluoride of the sample after the oxidation using the measuring device to provide a measurement signal of the total organic fluoride; and determining a first derivative of the measurement signal of the total organic fluoride. Other aspects are described and claimed.

The utility model relates to the technical field of wastewater treatment equipment, and particularly discloses a catalytic ozonation pond device for wastewater treatment, which comprises a wastewater treatment pond body provided with a cover plate at the top, an exhaust pipe is arranged on the cover plate, and the interior of the pond body is divided into at least two ozonation ponds which are connected in series for use. An ozone catalyst packing layer is arranged in the middle of each grid of ozone oxidation pond, the ozone oxidation pond comprises a water inlet end ozone oxidation pond connected with a water feeding pipe and a water outlet end ozone oxidation pond connected with a water discharging pipe, and a perforated branch pipe connected with the water feeding pipe is arranged at the bottom in the water inlet end ozone oxidation pond; a rectification part is arranged between every two adjacent ozone oxidation ponds, is communicated with the upper part of the front ozone oxidation pond and is communicated with the bottom of the rear ozone oxidation pond; the water discharging pipe is connected with the water feeding pipe through an ozone dissolved gas pipe which is also connected with an ozone generator. Ozone enters the ozone oxidation pond in the form of ozone-containing water, the ozone and the wastewater are mixed more uniformly, and the catalytic efficiency of an ozone catalyst is improved.

The utility model discloses a device for treating DDNP (dinitrodiazophenol) wastewater by a combined process. The device comprises a screening filter, a regulating tank, a sedimentation tank, an oxidation tank and an electrolytic tank, the screening filter is used for filtering the entering DDNP wastewater; the regulating tank is connected with the screening filter tank, and is used for regulating the pH of the DDNP wastewater subjected to filtration treatment to be acidic; the sedimentation tank is connected with the regulating tank, is used for carrying out sedimentation treatment on the DDNP subjected to acid regulation treatment and removing visible suspended matters in a water body, and comprises a sedimentation chamber, a dosing tank which is connected with the sedimentation chamber and is used for adding a water purifying agent into the sedimentation chamber, a filter screen arranged in the sedimentation chamber and a stirring part which is connected with the filter screen and extends downwards; the oxidation pond is connected with the settling chamber and is used for converting and decomposing part of soluble organic matters in the entering supernate into inorganic matters; the electrolytic tank is connected with the oxidation tank and is used for carrying out electrolytic reaction on the entering DDNP wastewater; through the composition of the limiting device, the DDNP wastewater is deeply treated, so that high-chroma and a large number of toxic organic matters in the DDNP wastewater can be deeply removed, and the effluent meeting the emission standard requirement is obtained.

The utility model discloses a jet flow gas distribution ozone oxidation device, which belongs to the field of sewage treatment and comprises an ozone supply unit, a water inlet unit, a primary jet flow oxidation unit, a secondary jet flow oxidation unit, a water outlet tank and a tail gas treatment device, the ozone supply unit comprises an ozone generator, an ozone flowmeter and a pressure control valve; the water inlet unit comprises a water inlet tank, a water inlet jet pump and a water inlet pump, the first-stage jet oxidation unit comprises a jet ozone feeder and a first-stage jet oxidation tank, a water inlet jet mixer and an ozone jet mixer are arranged in the first-stage jet oxidation tank, and the ozone jet mixer is connected with an outlet of the jet ozone feeder; and the second-stage jet flow oxidation unit comprises a vacuum induced draft fan, a second-stage jet flow oxidation pond, a jet flow oxidizer and a second-stage jet flow oxidation pump. According to the device, the ozone utilization rate of the system and the contact frequency of ozone and pollutants can be effectively improved through multiple times of jet flow gas distribution mixing, so that the energy consumption of the system is reduced, and the pollutant removal rate of the system is improved.

The invention provides a black membrane oxidation pond-MBR combined system and method suitable for winter and summer dual-mode treatment of pig manure water in a cold region, and aims to solve the problems of low treatment efficiency, poor seasonal adaptability and low resource utilization rate of the pig manure water in the cold region. The system comprises a pretreatment unit, a black membrane oxidation pond unit, an MBR treatment unit, a winter and summer mode switching unit and a tail water utilization / discharge unit, by optimizing a heat preservation structure and MBR process parameters of the black membrane oxidation pond, tail water can be used for farmland resource irrigation after reaching the standard in a summer mode, and pollutant removal is enhanced in a winter mode so as to meet the emission standard. The problems of low pig manure water treatment efficiency, high cost and poor seasonal adaptability in the cold region are solved, both resource recovery and environmental safety are considered, and technical support is provided for sustainable treatment of livestock and poultry breeding wastewater in the cold region. The invention belongs to the technical field of livestock and poultry breeding wastewater treatment.

The invention provides a water treatment system combining a coupled anoxic biological filter and a constructed wetland, which belongs to the technical field of water treatment, and has the technical key points that sewage is collected by a pipe network, flows into a water collecting tank and then enters a regulating / anoxic tank through a lifting pump, a carrier is provided for microorganisms through a solid carbon source in the tank, and slow-release supplement of the carbon source is realized at the same time; then, the sewage is conveyed to a biological filter and a contact oxidation pond through a lifting pump after the denitrification reaction is enhanced to remove total nitrogen, COD and ammonia nitrogen are removed through a carbon oxidation reaction and a nitration reaction, effluent enters an efficient clarification pond, most of total phosphorus and SS are removed through chemical phosphorus removal and a coagulation precipitation method, the effluent overflows into an artificial wetland, and the effluent is subjected to plant-microorganism-filler comprehensive treatment, so that the effluent is subjected to denitrification treatment. And pollutants are deeply purified and discharged after reaching the standard. By adopting the water treatment method provided by the invention, the effluent quality can be improved to the first-grade B emission standard.

The utility model discloses an oxidation ditch for sewage treatment, which relates to the field of sewage treatment and comprises an oxidation pond, a water pumping pipe and a water inlet pipe are respectively arranged on two sides of one end of the oxidation pond, mounting sleeves are fixed on two sides of one end of the oxidation pond and in the middle of one side of the oxidation pond, and the water pumping pipe and the water inlet pipe are connected with the mounting sleeves; a filter part is arranged in one side of one end of the oxidation pond, and a biological treatment assembly is arranged at the other end of the oxidation pond and is used for treating sewage in the oxidation pond; a sludge pumping assembly is arranged on one side of the filtering part, is arranged on one side of the oxidation pond and is used for pumping and treating sludge settled in the oxidation pond. According to the sewage treatment device, the filtering piece is arranged in the oxidation pond, and the coarse filtering plate on the filtering piece plays a role in preliminarily filtering sewage, so that large foreign matters in the sewage can be filtered out, and workers can intensively fish out the large foreign matters conveniently.

According to the advanced treatment process for the thiourea-containing wastewater, multi-stage pretreatment is performed through iron-carbon micro-electrolysis, three-dimensional electrochemical oxidation and ozone oxidation, so that long-chain organic matters are degraded, organic nitrogen is directly converted into nitrogen, and the biodegradability of the wastewater is improved; then adjusting the pH value, and sequentially carrying out biochemical treatment through an IC tower and a biological contact oxidation pond; and biochemical effluent is finally subjected to ozone contact oxidation to ensure that the standard is reached. According to the invention, iron-carbon micro-electrolysis, three-dimensional electrochemical oxidation and ozone oxidation are sequentially adopted to carry out multi-stage pretreatment on the wastewater, so that long-chain organic matters are efficiently degraded, organic nitrogen is directly converted into nitrogen, and the biodegradability of the wastewater is remarkably improved; then adjusting the pH value of the wastewater to be neutral, and sequentially introducing the wastewater into an IC tower and a biological contact oxidation pond to realize degradation of short-chain organic matters and efficient biological denitrification; and finally, residual refractory pollutants are further removed through ozone contact oxidation, so that stable and thorough purification of high-toxicity, high-ammonia-nitrogen and high-COD thiourea-containing wastewater is realized.

The invention discloses a treatment system for synergistically removing odor substances and a new pollutant PFAS in water and a treatment method thereof. The treatment system comprises a pre-oxidation unit, an algae removal, adsorption and clarification unit, a membrane separation and concentration unit and a destruction unit which are connected in sequence. The pre-oxidation unit is provided with an oxidation pond with a transverse reciprocating dynamic aeration assembly, so that the ozone mass transfer efficiency is improved. The algae removal, adsorption and clarification unit enables a suspended carbon mud bed to periodically expand and contract through a pulse generator so as to strengthen adsorption. The membrane separation and concentration unit adopts a modified polyether sulfone conical-end filtering membrane and is matched with an online cleaning mechanism, so that PFAS is efficiently intercepted, and secondary pollution is avoided. The destroying unit is used for carrying out synergetic high-temperature incineration on the membrane separation concentrated water and the waste carbon mud, and PFAS is thoroughly decomposed at the temperature higher than or equal to 900 DEG C; by optimizing ozone aeration, pulse adsorption, fluorine-free membrane separation and collaborative incineration, efficient collaborative removal of odor substances and new pollutant PFAS and harmless treatment of waste are achieved, the system integration degree is high, the treatment effect is good, and the risk of secondary pollution is avoided.

The utility model discloses an aeration system of a sewage oxidation pond, which belongs to the technical field of sewage treatment and comprises an oxidation pond body, a vertical mounting frame is fixedly mounted on the side wall of the oxidation pond body, a lifting driving component is mounted on the inner wall of the vertical mounting frame, and a lifting connecting plate is mounted on the lifting driving component. The lifting connecting plate is attached to the inner wall of the oxidation pond body and inserted into the oxidation pond body, a bearing block is fixedly installed at the bottom of the lifting connecting plate, an aeration frame is placed on the bearing block and fixedly connected with the lifting connecting plate through a bolt connecting assembly, and an aeration pipe is fixedly installed on the inner wall of the aeration frame; the aeration frame and the aeration pipe can be conveniently maintained and cleaned, the convenience of replacement and maintenance is greatly improved, meanwhile, the aeration pipe can be accurately located at the proper depth of sewage, oxygen is better supplied to microorganisms, pollutant decomposition is efficiently promoted, and the sewage purification effect is improved.

The present application relates to a kind of wood pulp white card processing wastewater treatment device and its working method, including initial filter device, adjusting pool, primary sedimentation tank, UASB reactor, aeration tank, chemical oxidation tank, activated carbon adsorption machine, concentration tank and filter press, the initial filter device includes support, two The support is equipped with support crossbeam, two The support crossbeam one end is equipped with support arm, the support arm is equipped with a plurality of ring type seats, two The support crossbeam other end is equipped with transmission case;First filter mechanism, second filter mechanism and third filter mechanism are provided to carry out hierarchical filtration, while first filter mechanism, second filter mechanism and third filter mechanism have inside to outside speed ratio increase, dynamic adjustment of the rotational speed of drum screen significantly improves the retention efficiency and reduces energy consumption, matches the retention needs of different length fibers, realizes the hierarchical retention and fine recovery of fiber.

This invention relates to the field of wastewater comprehensive utilization technology and discloses a water purification processor for power plant circulating cooling water. The processor comprises, in sequence, a denitrification tank, a secondary sedimentation tank, a flocculation sedimentation tank, an ozone contact oxidation tank, a BAF booster tank, a BAFDN tank, a BAFDC tank, a BAF permeate tank, a fiber disc filter, and a purified water tank. The denitrification tank is connected to the circulating water discharge via a pump, and a submersible mixer is fixedly installed inside the denitrification tank. To stably and efficiently remove total nitrogen from wastewater and ensure stable and controllable denitrification, this water purification processor for power plant circulating cooling water installs a submersible mixer in the denitrification tank, along with a first carbon source dosing device, to precisely control the dissolved oxygen (DO) in the tank to ≤0.5 mg / L, creating an anoxic environment. Simultaneously, a sludge return pump from the secondary sedimentation tank returns activated sludge to the denitrification tank to maintain a stable sludge concentration, thereby achieving stable total nitrogen removal and laying the foundation for subsequent advanced treatment.

The invention discloses a maintenance method of a contact oxidation pond. The maintenance method is characterized by comprising the following steps: (1) water temperature control; (2) PH value control; (3) controlling dissolved oxygen; (4) water quality condition control: pre-treating inorganic suspended matters and mud sand in the sewage before the sewage enters the contact oxidation pond; (5) hydraulic retention time control; (6) air volume control; (7) pool sludge control; and (8) biological membrane control. Compared with the prior art, the maintenance method has the advantages that the problems in the background technology can be greatly reduced, good economic benefits are obtained no matter the maintenance method is applied to treatment of industrial wastewater, aquaculture wastewater and domestic wastewater, and the maintenance method plays a key role in further treatment of water quality in the later process.

The application provides a sewage treatment biochemical reaction tank, and relates to the technical field of sewage treatment, which comprises a biochemical tank, wherein the biochemical tank is communicated with a water distribution tank, a plurality of filter material oxidation units are arranged in the biochemical tank, adjacent filter material oxidation units are communicated, sewage enters from one end of the biochemical tank, sequentially passes through a plurality of adjacent filter material oxidation units, and finally enters a sedimentation tank, the filter material oxidation unit comprises a filter material bin and an oxidation tank, the filter material bin is filled with granular calcium carbonate dephosphorization filter material so as to remove phosphate ions in sewage, an aeration pipe is arranged below the oxidation tank, a plurality of aeration holes are formed in the aeration pipe, a curtain type filler is arranged above the aeration pipe, and the curtain type filler is attached with an aerobic microbial membrane; the filter material bin is arranged adjacent to the oxidation tank, and the oxidation tank is communicated with the filter material bin. The application has the advantages of high dephosphorization and denitrification efficiency and good sewage treatment effect.

The utility model discloses an oxidation pond in the technical field of sewage treatment, which comprises a pond body, and an upper cover is arranged at the upper end of the pond body. The stirring assembly is arranged in the center of the tank body and is used for stirring liquid in the tank body. An oxygen supply device is wound on the outer side of the stirring assembly, the oxygen supply device comprises a spiral pipe and jet heads, the spiral pipe surrounds the stirring assembly, the jet heads are installed on the side, facing the stirring assembly, of the spiral pipe, and the jet heads face the central axis of the spiral pipe. An ozone supply assembly is arranged on the outer side of the tank body and is communicated with the spiral pipe. Vertical ultraviolet sterilization devices are arranged at four corners in the tank body and are used for sterilizing liquid in the tank body. The ozone utilization efficiency and the sewage treatment efficiency are high, and the disinfection and sterilization effects are good.

This utility model discloses a centrifugal wastewater collection device for the production of sodium dichloroquinoline-8-quinoline carboxylate, belonging to the field of wastewater collection technology. It includes a centrifugal filtration device, a distillation tower, an oxidation tank, a membrane filtration system, an activated carbon adsorption box, and a recovery water tank arranged sequentially. The activated carbon adsorption box includes a box body with several symmetrically arranged support legs at the bottom. An outlet is located at the top of the box body, an inlet is located on the bottom side wall, and a wastewater outlet is located at the center of the bottom. The box body has a water distribution layer, a coarse-particle activated carbon layer, and a fine-particle activated carbon layer distributed sequentially from bottom to top. This centrifugal wastewater collection device for the production of sodium dichloroquinoline-8-quinoline carboxylate purifies the wastewater after centrifugation, allowing it to be reused as process water or cooling water, reducing the amount of fresh water required.