185 results about "Sludge settling" patented technology

The invention relates to the technical field of sewage treatment optimization, in particular to an intelligent sewage plant full-process management and control method based on digital twinning, which comprises the following steps: acquiring concentration data to calculate rate clustering fluctuation, setting a threshold value mark stable section to analyze sedimentation association, constructing dynamic threshold value output control information, and adjusting stirring to generate a sludge discharge instruction set. According to the method, through the time sequence clustering of the concentration change rate, the stable section in the sludge sedimentation process is identified, the concentration fluctuation identification precision is improved, the sedimentation hysteresis is judged based on the time difference between the sedimentation track and the standard curve, the particle layering identification capability is improved, and the dynamic threshold matrix is constructed by using the correlation degree and the particle size data; the concentration range, the settling velocity deviation and the particle size distribution dispersion are fused, the multidimensional property of a regulation and control basis is enhanced, the interface position movement trend is combined, the concentration range is matched, a stirring intervention instruction is output, real-time regulation and accurate control of the layered settling process are achieved, and the treatment stability and the reaction time efficiency are improved.

The invention discloses a system and a method for highly automatically detecting sludge sedimentation layering based on color difference, and particularly relates to the field of sewage treatment. Comprising an automatic test box body module, a visual acquisition module, a color analysis processing module, a data management transmission module and a field data analysis module, the automatic test box body module is used for completing filling, discharging and cleaning of a sludge sample, stabilizing a detection environment and supporting a standardized sedimentation test; the visual acquisition module is used for regularly shooting sludge sedimentation images, embedding time, places and biochemical pool serial number information, and retaining traceable visual detection data; and the color analysis processing module is used for identifying digital characteristics of color mutation characteristics in the image and accurately positioning the height of the sludge layering interface. The method has the advantages of being high in interface positioning precision, high in anti-interference performance, high in data visualization and high in expansibility.

The invention relates to the technical field of sewage treatment, and discloses equipment for automatically detecting SV of sludge settlement, which comprises a reading machine and a mounting support plate on one side of the reading machine, a measuring cylinder is arranged on one side, close to the reading machine, of the mounting support plate, and a mounting seat is fixedly connected to one side, close to the mounting support plate, of the measuring cylinder. A first mounting frame is mounted on the side, close to the reading machine, of the mounting supporting plate, a sliding rail mechanism is fixedly connected to the side, close to the mounting supporting plate, of the first mounting frame, a wire groove guide chain mechanism is mounted on the side, away from the measuring cylinder, of the sliding rail mechanism, and a sliding table guide rail for flushing and an SV detection sliding table guide rail are arranged on the side, close to the measuring cylinder, of the sliding rail mechanism. According to the device, after sampling, the device can automatically detect SV30, data are obtained by driving a mechanical structure to move through signals of an optical sensor, the SV30 value is obtained through integration and analysis, the measurement precision can reach 1 ml, a non-contact measurement method is adopted in the mode, and pollution to measurement equipment can be reduced.

The invention discloses an activated sludge fluorescence online detection device based on a flow cell, and relates to the field of activated sludge biomass detection.The activated sludge fluorescence online detection device comprises a fluorescence spectrophotometer and a fluorescence spectrophotometer sample table arranged on the fluorescence spectrophotometer, and the fluorescence spectrophotometer is connected with a processor through a cable; the fluorescence spectrophotometer sample table is connected with a sample cup through a guide pipe, activated sludge is arranged in the sample cup, and a peristaltic pump is arranged on the guide pipe; the activated sludge continuously flows through the fluorescence spectrophotometer sample table through the guide pipe for three-dimensional fluorescence detection through the peristaltic pump, sludge sedimentation in a traditional cuvette is avoided, measurement is simple and convenient, and on-line real-time monitoring of the activated sludge biomass can be achieved.

The invention belongs to the technical field of sewage biochemical treatment, and particularly relates to an internal circulation anaerobic reaction tower and an esterification wastewater treatment method.The internal circulation anaerobic reaction tower comprises a tower body, a rotary water distributor is arranged at the bottom in the tower body, two three-phase separators are arranged in the tower body in the height direction at intervals, and the two three-phase separators communicate with a gas-liquid separation cavity through ascending pipes; the gas-liquid separation chamber is located at the upper end of the tower body, a gas-liquid separation assembly is arranged in the gas-liquid separation chamber, the gas-liquid separation chamber is communicated with one end of the sinking pipe, the other end of the sinking pipe is located above the rotary water distributor, a gas-liquid mixture enters the gas-liquid separation chamber through the ascending pipe by virtue of the three-phase separator, and granular sludge settles and flows back under the action of gravity; after a gas-liquid mixture is stirred by the gas-liquid separation assembly, gas rises and is discharged out of the system, liquid flows back to the position above the rotary water distributor through the sinking pipe under the action of self gravity, stable internal circulation is formed, efficient backflow of sludge can be achieved without additional power, and the reaction efficiency and the treatment capacity are greatly improved.

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.

The application discloses a sewage treatment system in-situ expansion method and device for improving the solid flux separation of a secondary sedimentation tank and a sewage treatment system. The method comprises the following steps: inputting activated sludge in the secondary sedimentation tank into a first separation cavity of a first-stage separation unit, so that the activated sludge is separated through spiral motion in the first separation cavity; according to the operation parameters of the secondary sedimentation tank and the performance of the activated sludge in an aeration tank in a biochemical treatment unit, inputting the activated sludge discharged from one of a first overflow port and a first underflow port of the first-stage separation unit into a second separation cavity of a second-stage separation unit, so that the activated sludge is separated through spiral motion in the second separation cavity, and inputting the activated sludge discharged from one of a second overflow port and a second underflow port of the second-stage separation unit back to the biochemical treatment unit. The method can regulate the solid load and sludge settling performance of the secondary sedimentation tank, increase the solid flux separation of the secondary sedimentation tank, and realize in-situ efficiency improvement and expansion of the sewage treatment system.

The sludge settling separation equipment comprises a tank body, the tank body is internally composed of a gas collecting area, a settling area and a sludge storage area, the gas collecting area is provided with a gas outlet, the side wall of the settling area is provided with a sludge feeding pipe and a water outlet, the sludge storage area is in an inverted cone shape, and the bottom of the sludge storage area is provided with a sludge discharging pipe; the rotational flow inner part is arranged in the settling area, the rotational flow inner part is a cylinder body with the pipe diameter reduced from top to bottom, an opening in the bottom of the rotational flow inner part is a mud outlet, the top of the rotational flow inner part is closed, a clear liquid outlet is formed in the rotational flow inner part, and a feeding hole is formed in the side wall of the rotational flow inner part and is communicated with the sludge feeding pipe; and the baffle inner piece consists of a cylinder and a plurality of groups of baffle plates on the side wall of the cylinder. Compared with the prior art, the sludge settling separation equipment provided by the utility model can effectively improve the flowing and distribution characteristics of sludge and shorten the sludge settling separation time.

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.

The invention provides a wastewater treatment system and method for improving sludge settleability, the wastewater treatment system comprises a first treatment line, the first treatment line comprises an activated sludge tank, a secondary sedimentation tank and a classifier, the outlet of the activated sludge tank is connected with the inlet of the secondary sedimentation tank, the sludge outlet of the secondary sedimentation tank is connected with the activated sludge tank, and the outlet of the secondary sedimentation tank is connected with the classifier. An outlet of the activated sludge tank is connected with an inlet of the classifier, the classifier comprises a light component outlet and a heavy component outlet, and the heavy component outlet is connected with the activated sludge tank; and heavy components sorted by the sorter are conveyed into an activated sludge tank. With the adoption of the technical scheme, the part difficult to settle is separated out through wet separation and discharged as residual sludge, so that the settling performance of suspended biomass is improved, and the treatment capacity of the settling pond and the treatment capacity of the whole treatment system are improved; and the mixed liquid in the activated sludge tank is used as the feed of the classifier, so that compared with the traditional hydrocyclone, the energy consumption is reduced.

The utility model discloses a sludge reflux tank capable of prolonging sludge settling time, which comprises a sludge reflux tank, one end of the sludge reflux tank is communicated with a sewage treatment tank, and the other end of the sludge reflux tank is communicated with a sludge settling tank through a reflux inlet; symmetrical guide rails are arranged on the two sides above the backflow port, connecting rods are slidably connected to the guide rails through guide blocks, baffles are arranged at the bottoms of the connecting rods and used for shielding the backflow port, and the height of the baffles is smaller than that of the backflow port. The reflux inlet is blocked by the baffle plate, and the height of the baffle plate is smaller than that of the reflux inlet, so that the lower-layer sludge is settled in the sludge reflux tank, and the top-layer slightly clear sewage overflows from the baffle plate and flows back to the sludge settling pond to be settled again; compared with an existing direct backflow mode, the mode has the advantages that the sludge backflow grooves can play a role in settling sludge, and a plurality of sludge backflow grooves are connected in parallel to form a large sludge settling pond, so that the sludge settling efficiency is greatly improved.

The utility model relates to a flowing type sludge settling device which comprises a water tank, a partition plate is arranged in the water tank and divides the upper area of the water tank into a water inlet area and a water outlet area, and the bottoms of the water inlet area and the water outlet area are communicated; the water inlet area is provided with a water inlet, and the drainage area is provided with an overflow port; a muddy water discharge port for driving the waterwheel to rotate is formed in the bottom of the water The utility model has the beneficial effects that mud-water mixed liquid settled at the bottom of the water tank is in a flowing state; mud-water mixed liquid can be collected and reused, for example, the mud-water mixed liquid is used for driving the waterwheel to rotate; clear liquid supernatant can be discharged; the device is simple in structure and convenient to use, can discharge, drain and decelerate upwards-overflowing supernatant, slows down the flowing-out process of the supernatant, reserves enough settling time for large-particle sludge left in the supernatant, and can play a role in defoaming the effluent of the supernatant.

The application discloses an electrolytic catalytic biological denitrification reactor and relates to the technical field of sewage treatment. The electrolytic catalytic biological denitrification reactor comprises a reactor body, an external power supply connected to the reactor body, an anaerobic reaction chamber and an aerobic reaction chamber separated by a first partition wall in the inner cavity of the reactor body, and a first drainage hole formed in the first partition wall. A water inlet is formed in the outer side wall of the anaerobic reaction chamber. A unit cathode and a water flow propeller are fixed in the anaerobic reaction chamber. A water outlet is formed in the outer side wall of the aerobic reaction chamber. A unit anode and a water flow propeller are fixed in the aerobic reaction chamber. The unit anode and the unit cathode are connected in parallel through wires, and the wires are connected to the external power supply. The electrolytic catalytic biological denitrification reactor can effectively improve the biological denitrification efficiency, reduce the pollution to the environment, has strong adaptability to water quality changes, has good sludge settling performance, is easy to maintain, manage and operate, has high denitrification efficiency, and has small land occupation.

The utility model relates to the technical field of pipeline dredging equipment, and particularly discloses a device for accelerating the flowing of a medium in a pipeline, which comprises a mounting pipe, a rotating shaft is rotatably arranged in the mounting pipe, two ends of the rotating shaft extend out of the mounting pipe, and a plurality of driving blades are arranged around the part of the rotating shaft in the mounting pipe; a driving piece is arranged outside the mounting pipe and is a motor; the driving part is in transmission connection with one end of the rotating shaft, and when sewage flows from left to right in the mounting pipe, the driving part drives the rotating shaft to rotate anticlockwise; when sewage flows from right to left in the mounting pipe, the rotating shaft is driven by the driving piece to rotate clockwise. The rotating shaft is arranged in the radial direction of the mounting pipe and horizontally arranged in the mounting pipe. A plurality of water injection pipes are arranged on the mounting pipe in a communicating manner, and electromagnetic valves are arranged on the water injection pipes; the problems of blockage, unsmooth circulation and the like of a sludge conveying pipeline caused by sludge sedimentation and drying frequently occur in an existing sludge pipeline are solved.

The utility model provides a comprehensive regulating tank for wastewater treatment, which comprises a tank body, a plurality of gas disturbing pipes are laid on the tank bottom of the tank body, the gas disturbing pipes are connected with gas supply pipes, gas outlets communicated with inner cavities of the gas disturbing pipes are arranged on the pipe walls of the bottom surfaces of the gas disturbing pipes, plugging pieces are arranged at the gas outlets, the plugging pieces are conical, and the gas supply pipes are communicated with the gas disturbing pipes. The blocking piece abuts against the interior of the air outlet from the outer side and seals the air outlet, and the blocking piece is connected with an elastic mechanism. According to the utility model, high-pressure air blown out from the air outlet is used for disturbing sludge at the bottom of the tank, the sludge settled at the bottom of the tank is scattered, and sludge impurities float again under the action of the air, so that the sludge sediment can be effectively reduced. Meanwhile, the blocking piece can block the air outlet when air does not flow out of the air outlet and can be automatically opened in the air outlet process, sewage and sludge impurities can be effectively prevented from entering the air disturbance pipe through the air outlet, the replacement and maintenance period of the air disturbance pipe is prolonged, and the maintenance frequency of the comprehensive adjusting tank is reduced.

According to the sludge settling ratio detector provided by the utility model, the height of the sludge level is monitored and shot in real time through the camera, and the shot height data of the sludge level is uploaded to the PLC processor for analysis and storage, so that the high precision of detection and the traceability of the data are ensured. Through the design of the top water inlet pipe and the bottom water inlet and outlet, a plurality of valves, a vacuum generation device and high-pressure air are matched, and the complete operation process of automatic water inlet, sedimentation, flushing and drainage is achieved. Particularly, pulse air washing is realized through high-pressure air, and deep cleaning of the measuring tool is realized through combination of tap water flushing, so that the cleaning efficiency of equipment is remarkably improved, and the influence of accumulation of residues on the measuring tool on subsequent detection is avoided. Meanwhile, the detector can flexibly adjust detection parameters according to actual requirements, meets the requirements of high-frequency and long-time continuous detection, greatly improves the automation level of sludge sedimentation, and reduces the manual operation cost.

This application discloses a system for enhancing the stable operation of a secondary sedimentation tank, belonging to the field of wastewater treatment technology. The system includes a tank body, an effluent trough fixedly installed at the upper inner side of the tank body, an overflow weir fixedly installed in the tank body and fixedly connected to the inner side of the effluent trough, a baffle fixedly installed in the tank body and fixedly connected to the inner side of the overflow weir, an operating platform fixedly installed on the tank body, a central column rotatably connected to the center of the tank body and located below the operating platform, and a sludge-removing structure installed on the central column for removing sludge from the bottom of the tank body. This system for enhancing the stable operation of a secondary sedimentation tank, by incorporating a dosing structure, allows for the simultaneous addition of flocculants to the tank body during sludge removal, improving sludge settling efficiency, helping to reduce the suspended solids concentration in the secondary sedimentation tank, and enhancing the stability and operational efficiency of the secondary sedimentation tank.

This invention relates to an advanced oxidation-biological co-treatment system and method for mineral processing wastewater. The advanced oxidation-biological co-treatment method for mineral processing wastewater of this invention includes the following steps: S1: Introducing polymetallic mineral processing wastewater into a pretreatment tank and adjusting the pH value for initial sedimentation treatment; S2: Introducing the supernatant into a coagulation sedimentation tank and adding a coagulant for secondary sedimentation treatment; S3: Introducing the supernatant into an ozone catalytic oxidation tower, adding a catalyst, and performing oxidation treatment to remove toxic and recalcitrant substances, and then removing residual ozone; S4: Introducing the wastewater into a biochemical reactor for biological treatment, followed by sludge settling, and discharging the supernatant after it meets the standards. The advanced oxidation-biological co-treatment method for mineral processing wastewater of this invention selectively catalytically oxidizes the wastewater before biological treatment, thereby improving the biodegradability of the wastewater.

The utility model discloses a sludge settlement detection device, which relates to the technical field of sludge settlement detection, and comprises a sampling structure and a cleaning structure, the sampling structure comprises an equipment box, a photoelectric sensor sending end and a photoelectric sensor receiving end which are respectively and fixedly arranged on two inner side walls of the equipment box, and a sampling barrel fixedly arranged on the inner bottom wall of the equipment box, the sewage discharging pipe is fixedly installed at the lower end of the sampling barrel, the sampling assembly is arranged on the surface of the equipment box, and the cleaning structure comprises a cleaning assembly arranged above the sampling barrel and a driving assembly arranged on the upper surface of the equipment box and used for driving the cleaning assembly to move. By arranging the cleaning structure, compared with the prior art, the device can inject clear water into the sampling barrel by matching the stirring component with the water spraying component, and stirs the clear water to generate water flow, so that the interior of the sampling barrel can be cleaned by the water flow, and the defect that the sampling barrel and a piston ring are scratched when a cleaning block and the piston ring are used for cleaning is avoided.

The invention relates to a microbial denitrification wastewater treatment method based on impact aeration, and belongs to the technical field of environmental protection and water treatment. According to the wastewater treatment method, the height-diameter ratio gt is adopted; a cylindrical reactor with the ratio of 5: 1 is adopted, wastewater is subjected to intermittent impact aeration, complete denitrification is achieved, and the method comprises the following steps that 1, activated sludge, iron modified particle filler and biological membrane filler are filled; step 2, introducing wastewater to be treated; step 3, starting a reflux pump; step 4, opening an electromagnetic valve to introduce air into the reactor; 5, closing the electromagnetic valve; step 6, repeating the step 4 and the step 5, so that the wastewater is subjected to multiple times of impact-aeration stopping circulation; 7, closing the reflux pump, and settling the sludge; and step 8, discharging clear liquid from the effluent weir. According to the wastewater treatment system, the height-diameter ratio reactor is adopted, and the air compressor is combined with the surge tank, so that complete denitrification of wastewater under low energy consumption is realized, and the problem of large occupied area of reaction equipment is solved.

The application relates to a sludge sedimentation ratio detection method, system, device, computer equipment and medium. The method comprises the following steps: obtaining a brightness image of an image of sludge in a transparent container after sedimentation in an HSV color space; performing contrast enhancement on the brightness image to obtain an enhanced image; screening out brightness mutation pixel points on each longitudinal pixel line based on the brightness value of each pixel point on the longitudinal pixel line in the enhanced image; each longitudinal pixel line is perpendicular to the horizontal direction of the enhanced image, and the multiple longitudinal pixel lines divide the enhanced image into at least three parts; determining the sludge layer height based on the height information of the brightness mutation pixel points on all the longitudinal pixel lines; and determining the sludge sedimentation ratio based on the sludge layer height and the initial height of the sludge in the transparent container. The method can improve the accuracy of the sludge sedimentation ratio detection result.

The invention discloses an intelligent municipal sludge treatment system, and relates to the technical field of sludge treatment.The intelligent municipal sludge treatment system specifically comprises an intelligent sensing layer, an intelligent execution layer and an intelligent management layer, the intelligent sensing layer, the intelligent execution layer and the intelligent management layer are electrically connected, and the intelligent execution layer comprises a sludge settling pond and a sewage treatment pond; a sewage pretreatment pipe is fixedly mounted on the left side of the upper end surface of the sewage treatment tank, and a filtering assembly is movably mounted on the inner wall of the sewage pretreatment pipe. According to the sewage treatment device, the sewage treatment tank, the sewage pretreatment pipe, the filtering assembly and the mud scraping plate are matched, the mud scraping plate is arranged, so that the effect of scraping sediments generated by mixing sewage falling into the sewage treatment tank with a flocculating agent is achieved, and the mud scraping plate is driven by the moving assembly to move at the bottom of the sewage treatment tank; and sediments accumulated at the bottom of the sewage treatment tank can be pushed to the sewage discharge groove, so that the sediments at the bottom of the sewage treatment tank can be conveniently cleaned.

The invention provides a car washing circulating water sludge dewatering device and a using method thereof.The car washing circulating water sludge dewatering device comprises a multi-stage sedimentation tank, a desilting and drying disc, a desilting pipe, a drainage pipe and a water return pipe, and the multi-stage sedimentation tank comprises treatment boxes from the first treatment box to the Nth treatment box, a silt liquid level instrument, a frame, an air tank and an air outlet spray head; the first to Nth treatment boxes are communicated in sequence, silt liquid level instruments and frames are respectively arranged in the first to Nth treatment boxes, an airflow channel is respectively arranged in each frame, an air outlet nozzle is arranged on the lower surface of each frame, the air outlet nozzles are communicated with the airflow channels, and the airflow channels in the frames are further communicated with the air tank; the air tank is arranged on the outer side wall of the treatment box, the multi-stage sedimentation tank effectively improves the sludge sedimentation efficiency through a multi-stage sedimentation structure, it is ensured that sludge in wastewater is fully deposited at the bottom of the tank, accurate monitoring of the sludge deposition height is achieved through the arrangement of the sediment liquid level instrument, and a reliable basis is provided for automatic sediment discharge.

The invention belongs to the technical field of sewage treatment, and particularly discloses a bacteria-algae complex, a preparation method thereof and a sewage treatment method. The method comprises the following steps: firstly, establishing a short-cut nitrification coupling anaerobic ammonia oxidation system to treat sewage, gradually reducing the ammonia nitrogen concentration of the sewage after stable operation, and enriching sludge in the treatment process; the method comprises the following steps of: firstly, adding microalgae (including Scenedesmus, Chlorella and / or Auxenochlorella) into a treatment system, inoculating the microalgae into sludge, continuously carrying out short-cut nitrification coupled anaerobic ammonia oxidation treatment, gradually reducing the settling time in the treatment process, and separating settled substances in the treatment process to obtain the bacteria-algae complex. According to the present invention, with the application of the bacteria-algae complex, the low ammonia nitrogen concentration sewage treatment can be achieved, the treatment aeration rate can be reduced, the dissolved oxygen distribution can be improved, and the sludge settleability can be improved.

The invention relates to an aeration tank sludge sedimentation ratio prediction method and device based on autoregression decoding. The method comprises the following steps: arranging a sludge sedimentation observation container communicated with an aeration tank; introducing the mixed liquid of the aeration tank into an observation container, and capturing an image frame sequence of the mixed liquid in the observation container from a standing starting stage to a free settling stage; cleaning an observation container and discharging waste liquid, inputting an acquired image frame sequence into a sludge sedimentation ratio prediction model based on ResNet and autoregressive Transformer at the same time to obtain a predicted 30-minute sedimentation dynamic curve, and introducing a causal mask multi-head attention mechanism during prediction; and the prediction process is repeated after the aeration tank mixed liquid is introduced again. According to the method, the 30-minute SV value can be accurately predicted by capturing the short-time dynamic rule at the initial stage of sludge sedimentation, so that the response speed and accuracy of SV value monitoring are improved, and a support is provided for rapid and accurate regulation and control of a sewage treatment process.

The invention relates to the technical field of wastewater purification, and provides a tandem type wastewater purification treatment reaction device which comprises a sludge settling tank for settling sludge, the bottom side of the sludge settling tank is fixedly connected with a sludge discharge barrel, two communicating cores are vertically arranged in the sludge discharge barrel in a sliding mode, and the two communicating cores are communicated with the sludge discharge barrel. The two communicating cores are used for communicating the sludge settling tank and the sludge discharging barrel to guide settled sludge into the sludge discharging barrel, the sludge discharging barrel creates a negative pressure environment in the sludge discharging barrel through a negative pressure assembly to enhance the flowability of the sludge, and one side of the negative pressure assembly is connected with the two communicating cores through a connecting frame. Multifunctional linkage cooperation of negative-pressure sludge discharge, aeration area expansion, automatic increase of the air supply amount and inflow water interception is achieved, the overall efficiency of the system is remarkably improved, the sludge fluidity is greatly enhanced, the sludge discharge speed is increased, the aeration coverage range is expanded, the dissolved oxygen concentration is increased in cooperation with the dosage air supply device, and the aeration efficiency is improved. The anaerobic fermentation and activity reduction of the sludge during the sludge discharge period are effectively prevented.

The utility model discloses heavy metal wastewater treatment equipment, which belongs to the technical field of wastewater treatment and comprises a box body, the interior of the box body is divided into a precipitation cavity, a water storage cavity, a metal treatment cavity and an instrument cavity, and the metal treatment cavity is composed of a PAM dosing cavity, a PAC dosing cavity, a heavy metal reaction cavity and a PH adjusting cavity. The PH adjusting cavity, the heavy metal reaction cavity, the PAC dosing cavity and the PAM dosing cavity perform dosing through a dosing module arranged in the instrument cavity; in the specific implementation process, wastewater is introduced into the PH adjusting cavity from the water inlet for PH adjustment, then sequentially enters the heavy metal reaction cavity, the PAC dosing cavity and the PAM dosing cavity and then enters the bottom of the sedimentation cavity through the uniform water distribution system, and the wastewater is subjected to sludge sedimentation through a sedimentation inclined plate and then enters the water storage cavity for storage. The box body only needs to be placed at a proper position when the box body needs to be used, and the box body only needs to be carried away when the box body needs to be disassembled.

This application discloses a pulse aeration device for preventing sludge accumulation in the flocculation zone of a high-efficiency sedimentation tank, belonging to the field of wastewater treatment technology. It includes a high-efficiency sedimentation tank, with a mixing zone, a flocculation zone, and a sedimentation zone arranged sequentially from left to right inside the tank. This application utilizes the coordination of an aeration device, an air distribution pipe, a pulse control valve, and a perforated aeration pipe to periodically aerate the flocculation zone. The pulse control valve periodically opens and closes, generating pulsating bubbles from the aeration holes of the perforated aeration pipe. The rising bubbles drive the surrounding water flow, forming local turbulence, enhancing the mixing effect and slowing sludge settling. Furthermore, the intermittent release of the pulsed airflow avoids the damage to the flocs caused by continuous aeration. A drive unit drives a threaded rod to rotate, causing a moving plate to move along the movable groove, adjusting the position of the stirring blades. Driven by a stirring motor, the threaded rod drives the stirring blades to rotate, forming a complementary mixing mode with the pulse aeration, further improving the flocculation effect.

The invention relates to a coking wastewater intermittent biochemical treatment device which comprises a reaction tank, a rotatable shaft rod and an aeration device are arranged in the reaction tank, a plurality of stirring rods are arranged on the shaft rod, the reaction tank is of a barrel-shaped structure with an open top surface, and the shaft rod and the reaction tank are coaxially arranged; a conical plate is arranged at the bottom of the inner side of the reaction tank, an opening of the conical plate faces downwards, a gap is formed between the top of the conical plate and the bottom of the shaft rod, and the conical plate can vertically move; an annular air bag is arranged on the outer edge of the conical plate; a gap is formed between the annular air bag and the side wall of the reaction tank in a non-inflated state. Sludge and clarified water can be separated after sludge sedimentation is completed, the clarified water can be conveniently and rapidly discharged, and the sludge content of discharged water is not increased.