76results about How to "Guaranteed water effect" patented technology

The invention discloses a low-oxygen aerating control device and method of segment inlet A / O biological denitrifying technique, which contains three control circuits, wherein the first and second circuits adopt DO cascade PI control system; the third circuit uses higher-precision ammonia nitrogen feedforward-feedback control system, which gathers DO density, ammonia nitrogen density of aerobic area and ammonia nitrogen density of last anoxybiotic area to reflect the change of inlet load.

The invention provides an efficient pollutant intercepting device for a gutter inlet. The efficient pollutant intercepting device comprises a box body (7), wherein the upper edge of the box body (7) comprises a retainer which comprises a turnup (8); the box body (7) comprises side surfaces and a bottom surface; the box body (7) also comprises a handle (9); a pollutant intercepting mesh (10) is arranged at the inner side of the box body (7); a filler (5) is loaded between the sides surfaces of the box body (7) and the pollutant intercepting mesh (10). The efficient pollutant intercepting device for the gutter inlet is capable of intercepting pollutants going into the gutter inlet such as leaves, paper scraps and cigarette butts, and preventing the gutter inlet and a pipeline from being blocked; particles in the primary rainfall runoff are removed through a filter material filled in the space reserved at the four sides of the device; when the volume of runoff is large, rainwater is capable of directly going into the bottom space of a gully trap via a filter screen in stead of the filter material layer.

The invention provides a production process for outdoor cloth made from color-cloud low-stretch pongee. The production process includes sewing grey cloth; desizing and dyeing the grey cloth; shaping and widening the grey cloth; preparing glue for a shading bottom surface coating proportionally, coating finished black base cloth with the prepared glue for the shading bottom surface coating, and drying the black base cloth in a drying oven; grinding aluminum paste by a three-roll grinder, feeding the aluminum paste into a dispersion machine to blend the same with other ingredients proportionallyso as to prepare glue for a top surface coating, coating the dried shading bottom surface coating with the prepared glue for the top surface coating, and drying the base cloth in the drying oven. Theproduction process has the advantages that double repeated PU coatings are applied, a color-cloud material is mixed with PU resin to be spread onto the cloth surface evenly under the adhesive actionof the resin, a superstrong metal luster effect is achieved, and added value of products is increased; the produced outdoor cloth has high metal luster, high covering power and a superstrong uvioresistant function; the production cost of the color-cloud material, as a novel colouring material, is reduced by 30% as compared with common pearlescent pigment.

The invention relates to a method and device for synergetically removing multiple heavy metals and polycyclic aromatic hydrocarbon in runoff rainwater. According to the method for synergetically removing the multiple heavy metals and polycyclic aromatic hydrocarbon in the runoff rainwater, filler is adopted and comprises a zero-valent iron ball layer. According to the method, a novel material layer, namely, the zero-valent iron ball layer is arranged, the characteristics of the large specific surface area and the like of zero-valent iron balls are utilized, the zero-valent iron ball layer cooperates with a sand layer, a wood bit layer, a pumice layer and a fine gravel layer, the synergistic effect is achieved, the effect of removing polycyclic aromatic hydrocarbon and the heavy metals is greatly improved, treatment efficiency is improved, and the problems that the removal capacity of traditional filter materials (natural sand, dinas, gravel and the like) for the heavy metals is not as good as the removal capacity for conventional pollutants, and the removal rates of different metal are very different are solved.

The invention discloses a method and a device for realizing the quality-based water supply of a central water purifier. An ultrafiltration unit, which is easy to detach and replace, is integrated on the top part of the filter tank of the central water purifier, and the water purifier is also provided with a water outlet for directly drinking water filtered by an ultrafilter besides the water outlet for common purified water filtered by a filtering material. On the basis of keeping an original filtration path, a flow path from the common purified water to the water outlet is changed by flow channel planning so as to lead the common purified water to the ultrafiltration unit. By setting a reasonable flow channel inside diameter size, the flowing speed of water flowing in the ultrafiltration unit is improved and an ultrafiltration membrane can be cleaned effectively. A curved flow channel is adopted to adapt to the limitation on the length of an ultrafiltration core and the space in the tank. The invention provides a solution and device for channel planning for downflow filtration and reverse flow filtration and the implementation method of the ultrafiltration unit which is easy to detach and replace. In the invention, the quality-based water supply is realized by one set of central water purifier, and heavy-flow living purified water supply and heavy-flow and high-quality directly drinking water supply are realized.

The invention relates to a system for decentralized sewage and sludge biochemical treatment, which comprises a biochemical filtering bed for biochemical treatment for sewage and a sedimentation regulating tank connected with a sewage source, water distribution tubes are arranged on the surface of the biochemical filtering bed and connected with a water pump in the sedimentation regulating tank via a main water distribution tube, a sludge filtering bed is arranged near the sedimentation regulating tank which is provided with a sludge pump, the sludge pump is connected with the sludge bed via tubes, wherein grading of filler in the basement of biochemical filtering bed is reasonable, the filtering bed is fine in water permeability and microbiological survival environment, high in efficiency of sewage processing, and can avoid blocking and crusting, thereby the filtering bed is beneficial to long-term usage, as the drying stabilizing treatment on the sludge in the sedimentation regulating tank is achieved by the sludge filtering bed, pollution to others water source can be avoided, further as the sludge accumulating to a certain amount in the sludge filtering bed, one-time cleaning can be achieved and resourced utilization can be realized, thereby reducing the processing cost.

The invention discloses a water reusing device and method based on an integrated vertical-flow constructed wetland. The water reusing device comprises a constructed wetland, wherein one side of the constructed wetland is provided with a regulation water box and a water storage box from top to bottom, and the other side of the constructed wetland is provided with a clear water box; the constructed wetland sequentially consists of a vegetation layer, a crushed rock layer, a soil layer, a mixed layer of furnace slag and limestone, a sand particle layer and a crushed rock layer from top to bottom; a water distribution tube is connected between the regulation water box and the soil layer; a flow passage hole is formed in the bottom of each crushed rock layer. The water reusing device collects rainwater and domestic wastewater by virtue of a gravity flow without needing to use a water pump and the like to provide additional powder, and thus energy is saved. According to the water reusing device disclosed by the invention, a small-sized aerator can be arranged in the regulation water box and can provide oxygen for subsequent constructed wetland unit treatment according to the needs for water quality, and thus aerobic reaction and facultative reaction are realized, and removal of nitrogen and phosphorus is promoted. Meanwhile, with the adoption of the water reusing device, influences on water treatment caused by water quality fluctuation and weather variation are overcome, and thus effluent effect is ensured.

The invention discloses a packing coupling denitrification device and method for rural domestic sewage treatment. The device comprises an aeration tank, an iron-carbon biological denitrification tankand a sedimentation tank which communicate with one another in sequence; the aeration tank communicates with a sewage inlet pipeline; a biofilm Yulong filler and an iron-carbon filler are respectivelyarranged in the aeration tank and the iron-carbon biological denitrification tank; a flow guide plate is arranged at the communication position of the aeration tank and the iron-carbon biological denitrification tank; an air inlet main pipe separately communicates with the aeration tank and the iron-carbon biological denitrification tank and extends into the bottom of the biofilm Yulong filler and the bottom of the iron-carbon filler; the upper part of the aeration tank and the iron-carbon biological denitrification tank are respectively provided with exhaust holes; and a water outlet pipe and a sludge discharge pipe are arranged on the side wall of the sedimentation tank. Biological agents are respectively adsorbed in the aeration tank and the iron-carbon biological denitrification tankin modes of Yulong filler biofilm and iron carbon filler biofilm, so that particulate phosphorus, suspended solid (SS) and heavy-metal ion pollutants in the sewage are removed. The nitrogen and phosphorus removal effect is good, and influence of low C / N ratio on biological denitrification in a sewage treatment process is avoided.

The invention discloses a sewage filtering system and method suitable for a water source heat pump air-conditioning unit, and belongs to the technical field of water resource treatment of the water source heat pump air-conditioning unit. The sewage filtering system and method aim to solve the problem that because municipal sewage or surface water is directly adopted as a water resource of the water source heat pump air-conditioning unit, the air-conditioning unit will be blocked, and consequently equipment can not operate normally. The sewage filtering system comprises the heat pump air-conditioning unit, a sewage pump, a first liquid flow direction controller, a first electric pilot reversing actuator, a first sewage filter, a second sewage filter, a first one-way valve bank, a second one-way valve bank, a first differential pressure pickup, a second differential pressure pickup and a PLC. According to the method, the PLC controls electric pilot reversing actuators correspondingly according to pressure difference signals collected by the two differential pressure pickups in real time so that liquid can flow along the inlets and the outlets of the corresponding liquid flow direction controllers, and then control over the water flow direction can be achieved. The sewage filtering system and method are applied to sewage filtering for the heat pump air-conditioning unit.

The invention discloses a high-concentration organic wastewater treatment method. The method adopts coagulation sedimentation, electric catalysis, a Fenton oxidation tower, digestion and neutralization, a UBF anaerobic reactor, a high-load aerobic tank and biochar. The method comprises the following steps: oxidizing toxic substances such as sulfide, cyanide and phenol, turning organic pollutants into charged fragment small molecules to remove the organic pollutants to improve the biodegradability of wastewater, putting the wastewater into the anaerobic reactor for aerobic biological treatment,deeply purifying the wastewater through the biochar, and discharging the wastewater. The invention further discloses a treatment system of high-concentration organic wastewater. The treatment methodand system disclosed by the invention are high in high-concentration organic wastewater treatment efficiency, high in wastewater concentration change adaptability, and good in treatment effect on organic wastewater with high COD concentration, high chromaticity, toxicity and degradation resistance, and can realize continuous and stable operation.

The invention discloses an assembled membrane bioreactor. The membrane bioreactor is formed by splicing multiple functional tank bodies communicated through a pipeline, wherein each functional tank body comprises a regulating pool functional tank body, an aerobic pool functional tank body, an anoxic pool functional tank body, and a functional tank body used as a control room; the aerobic pool functional tank bodies and the anoxic pool functional tank bodies are orderly and alternatively arranged in a matrix way. The membrane bioreactor disclosed by the invention is formed by splicing the multiple functional tank bodies, and the number of the aerobic pool functional tank body or the anoxic pool functional tank body can be properly added or reduced and the arrangement way of the aerobic pool functional tank bodies or the anoxic pool functional tank bodies can be changed according to actual demand and water depth demand of the engineering, thereby realizing the regulation of sewage handling capacity, and the field installation is convenient, and the transportation is convenient; a multi-layer membrane component is used in the membrane bioreactor, compared with a single-layer membrane component with the same membrane element number, the floor area of the membrane component is greatly reduced in the premise of guaranteeing the effluent effect; the floor area is reduced by 50%, an aeration rate is reduced by 36%, and the energy consumption and the economic cost are effectively saved.

The invention discloses a semi-automatic opening-closing detergent box assembly and a washing machine with the same. The semi-automatic opening-closing detergent box assembly comprises a water box, and a detergent box arranged in the water box in a sliding mode. A box cover is arranged on the top of the water box. A handle cover is arranged at the front end of the detergent box. The semi-automatic opening-closing detergent box assembly further comprises a locking unit and an automatic popup unit. The locking unit is used for locking the detergent box to the closing position. The automatic popup unit is used for driving the unlocked detergent box to be popped out of the water box. The water box assembly is provided with a guiding structure for ensuring the popup direction of the detergent box. The locking unit alternately and sequentially changes the locking and unlocking state along with pressing. The structure and operation are simple and reliable, the detergent box can be automatically opened on the condition that no excessive cost is added, the comfortable using experience is given to people, complex manual operation is simplified, and the semi-automatic opening-closing detergent box assembly can be applied to full-automatic washing machines or semi-automatic washing machines of any types.

The invention relates to an efficient sewage interception device and an efficient sewage interception operation method for urban road gutter inlets. The efficient sewage interception device comprisesa collecting well body and a water collecting pipe, wherein the collecting well body comprises an upper collecting well body and a lower collecting well body which are detachably connected into a whole vertically by insertion, and the bottom of the lower collecting well body is provided with a microorganism filler layer. A vertically two-section rainwater grate of a hanging-basket structure is mounted at the upper end of the upper collecting well body, and a vertical-flow sand settling device is arranged in the upper collecting well body and comprises a splayed reflecting component, a silt interception component of a rectangular pyramid and an anti-sludge resuspension component of an inverted square frustum structure which are arranged from top to bottom. The efficient sewage interceptiondevice integrating a gutter inlet sewage interception modification technology, the vertical-flow sand settling device and the bottom microorganism filler layer can intercept large solid pollutants, silt and other particles and can ecologically degrade the sludge deposited at the bottom.

The invention provides a device and method for deep denitrification and enrichment of glycogen accumulating organisms and belongs to the technical field of environmental protection. Artificially distributed water enrichment culture is performed according to the required environmental requirements for growth of the glycogen accumulating organisms. Artificially distributed water 1 is pumped into a glycogen accumulating organism enrichment SBR reactor, anaerobic mixing is performed, glycogen decomposition is performed under the anaerobic condition, and energy and reducing power NADH2 are provided for PHAs synthesis; a carbon source is absorbed, synthesized PHAs is stored in cells but does not release phosphorus; after an anaerobic phase finishes, precipitation and drainage are performed, and then artificially distributed water 2 containing no phosphorus nor carbon source is added to execute an aerobic aeration phase; under the aerobic condition, PHA in oxidized cells of the glycogen accumulating organisms is used for glycogen regeneration and microbial proliferation and growth; after the aerobic phase finishes, precipitation and drainage are performed; when the glycogen accumulating organism enrichment SBR reactor operates, sludge discharge is needed to keep the sludge concentration in the range of 2500-4000 mg / L. The method can achieve quick and efficient enrichment culture of the glycogen accumulating organisms.

The invention discloses a building water supply and drainage system and method, and belongs to the technical field of building water supply and drainage. A building water supply and drainage system comprises a filter box, a water inlet and a water outlet are formed in the top and the bottom of the filter box respectively, a discharging cavity and a filter cavity are formed in the filter box and communicated with each other, two supports are fixedly arranged on the inner wall of the filter cavity, and a filter screen is arranged between the two supports. A moving plate is arranged between the top of the filter screen and the top wall of the filter cavity; according to the water supply and drainage system, impurities on the filter screen can be automatically cleaned while water is drained, the labor amount of workers is reduced, reliable, stable and continuous work of the water supply and drainage system is guaranteed, meanwhile, sewage in the impurities is removed, the discharging and recycling amount of the sewage is guaranteed, and peculiar smells emitted when the impurities are cleaned are reduced; therefore, the operation difficulty of workers is reduced.

The invention relates to an anaerobic treatment process of organic wastewater, which comprises the following steps: pretreating the organic wastewater by a pretreatment system, feeding the treated wastewater into an anaerobic fermentation tank, and stirring for anaerobic fermentation; then storing biogas generated in the anaerobic fermentation tank into a biogas storage tank, dehydrating and desulfurizing one part of the biogas in the biogas storage tank through a dehydration and desulfurization device, then recycling the biogas, and aerating the other part of the biogas in a concentration separator; then enabling effluent of the anaerobic fermentation tank to enter a concentration separator, aerating with biogas and carrying out anaerobic biological contact treatment, meanwhile, recyclinganaerobic sludge in the concentration separator back to the anaerobic fermentation tank for repeated fermentation, and discharging and treating sludge at the bottom of the anaerobic fermentation tankat regular intervals; finally, discharging the biogas used for aeration through a gas outlet of the concentration separator and recycling the biogas into the biogas storage tank, and disinfecting effluent separated by the concentration separator by a disinfection tank and then recycling. The process can solve the problems that most anaerobic process inlet water at present is greatly influenced bySS, the internal structure is complex, adding of high-price fillers and the like is needed by some processes.

A mud scraper relates to the field of sewage treatment, in particular to an improvement of a mud scraper for sewage treatment. According to the mud scraper, inflow water stirring is reduced, and the contact time of sewage and a flocculating agent is prolonged, so that the effluent efficiency is guaranteed. The mud scraper comprises a tank body and a working bridge fixed above the tank body. A flowstabilizing cylinder is fixedly arranged on the bottom surface of the working bridge; a water inlet is formed in the upper portion of the flow stabilizing cylinder; a plurality of stabilizing plateslocated below an outlet of a water inlet channel are arranged on the inner wall of the upper portion; one end of each stabilizing plate is evenly fixed to the inner wall of the upper portion, and theother end of the stabilizing plate is fixed to the outer wall of a connecting ring; the connecting ring is arranged on a mud scraping shaft in a sleeving mode; and the stabilizing plates are arrangedobliquely to the horizontal plane. The flocculation effect is improved, and the effluent efficiency is finally ensured.

An irrigation mechanism for tea planting comprises two first supporting columns and two second supporting columns, the first supporting columns and the second supporting columns are arranged in parallel, and a fixing plate is fixedly installed between the first supporting columns and the second supporting columns located on the same side; two symmetrical sliding rods are fixedly mounted between the close side faces of the connecting sleeves located on the two sides, two symmetrical sliding sleeves are fixedly mounted on the outer surfaces of the sliding rods, mounting blocks are fixedly mounted at the bottoms of the sliding sleeves, and second electric push rods are fixedly mounted between the side faces of the spraying and watering box located in the middle and the side faces of the connecting blocks; connecting frames are fixedly installed between the middle sliding sleeve and the outer surfaces of the sliding sleeves on the two sides. The coverage range of spraying water can be enlarged, meanwhile, the rotating direction of the rotating spraying box body is continuously switched, the contact angle of the spraying water and tea leaves is continuously changed, and the spraying irrigation effect is improved.

The invention discloses a key structure of a pulling-type shower head. The key structure of the pulling-type shower head comprises a shower head body, an operation assembly and two switching assemblies. The two switching assemblies are arranged on the shower head body to realize switching between water outlet modes. A pivoting part is formed on the shower head body and is located between the two switching assemblies. The operation assembly comprises a switching key and two movable pieces. The switching key is mounted on the pivoting part and is provided with a moving cavity with an open side facing the pivoting part. The two movable pieces are pivoted on the two sides of the pivoting part separately and are located in the moving cavity, and the two movable pieces are in linkage with the two switching assemblies. Limiting structures are arranged between the two ends of an opening of the moving cavity and the movable ends of the movable pieces. The switching key can rotate and move relative to the shower head body through the pivoting part. A restoration structure is arranged between the moving cavity and the pivoting part. According to the key structure of the pulling-type shower head, linkage and restoration of the two switching assemblies are achieved through the operation assembly so that all functions of the pulling-type shower head can be switched in place, the water outleteffect of the pulling-type shower head is guaranteed, and user experience is improved.

The invention discloses a water taking system for a shallow water river in a water-depleted mountainous area. The system involves an overflow weir, a water taking chamber and a radiation well, whereina spillway grid is arranged at an inlet of the water taking chamber, a floating mushroom head automatic water taking device and an on-line turbidity meter are arranged in the water taking chamber, and a submersible pump is arranged in the radiation well. When flooding does not occur, the overflow weir lifts the water level of the shallow water river, river water flows into the water taking chamber through the spillway grid, and then enters a water conveying pipe from the floating mushroom head automatic water taking device to flow to the radiation well, and finally, the submersible pump conveys the river water to a subsequent water purifying structure; a drought period relies on joint recharge of the above mentioned surface water recharge mode and the seepage of the radiation well; when the on-line turbidity meter in the water taking chamber during a flood period is displayed higher than 5 NTU, the on-line turbidity meter feeds back a signal to a self-control system, an electric butterfly valve mounted on the water conveying pipe is closed, and the radiation well supplies water through the self-seepage; according to the water taking system, the water supply amount of the shallow water river in the water-depleted mountainous area can be ensured, the water quality is reliable, the service life of the water taking system is prolonged, and the water taking cost is reduced.

The invention relates to a wastewater treatment method, and a cross-flow membrane bioreactor ultrafiltration system used therein, and belongs to the technical field of wastewater treatment. The cross-flow membrane bioreactor ultrafiltration system comprises: a ceramic module comprising ceramic substrates for microorganisms to adhere and grow, wherein the ceramic substrates are vertically arranged;a spraying device comprising spraying nozzles and a spraying pipeline; an aerobic tank comprising an aerobic tank body and an aerator, wherein the aerobic tank body is arranged below the ceramic module; and a liquid path system comprising a spraying water pump, an ultrafiltration valve, an ultrafiltration outlet valve and a module pipeline, wherein one end of the module pipeline is communicated with a substrate pipeline, the other end of the module pipeline is communicated with the ultrafiltration outlet valve, and the ultrafiltration valve is arranged on the module pipeline. The cross-flow membrane bioreactor ultrafiltration system integrates a membrane separation technology with a biological treatment technology, is a novel wastewater treatment system mainly based on biochemical treatment and also having a membrane filtration function, and has a high throughout and a good treatment effect on restaurant wastewater.

The invention relates to a reaeration device and reaeration method for constructed wetland. A reaeration pipe is an open-ended tubular structure, one end of the pipe is inserted into a wetland substrate, and the other end is connected to a windmill to receive and accelerate the air flow. The reaeration pipe can also be formed by coaxial telescoping or parallel arrangement of several open-ended reaeration pipes with different pipe diameters and lengths, and the reaeration pipe is connected to the windmill to jointly form the reaeration device. The invention also provides the method for constructed wetland reaeration with the reaeration device. The reaeration device provided by the invention has the characteristics of simple structure, environment-friendly materials, and low cost. The method using the device to perform constructed wetland reaeration has the advantages of simplicity and practicability, energy saving and environmental protection, low maintenance cost, good reaeration effect, high operation efficiency, and wide application scope.

The invention discloses an integrated oxygen-poor intermittent aeration domestic sewage treatment device, comprising a container, a cover body, a fan, a water inlet pipe, a water inlet siphon decanter, a siphon mud removal device, a drain siphon decanter and an aerator pipe. A vertical partition is arranged in the container to divide the container into two parts, namely a pretreatment tank and a biological reaction tank, and the water inlet pipe is communicated with the pretreatment tank. The water inlet siphon decanter supplies water from the pretreatment tank to the biological reaction tank, the siphon mud removal device is used for discharging mud from the biological reaction tank to the pretreatment tank, the drain siphon decanter is used for discharging water out of the container, the aerator pipe is arranged on the bottom of the biological reaction tank, and the aeration pipe is connected with the fan through an air pipe. The device of the invention is embedded under the ground, thereby being convenient for constant temperature and heat preservation and avoiding physical damage and unnecessary safe accidents; and the device has no overflow in rainy days, no germ spread in summer and no noise in operation, no secondary pollution such as odor and the like.

The invention relates to a method for treating and recycling mine wastewater by using purified diatomite; the method comprises the following steps: firstly, the mine wastewater is collected via a water absorbing tank firstly, then the wastewater is evenly stirred by a stirrer, next the wastewater is lifted to a purified diatomite reactor by a submersible sewage pump, at the same time, purified diatomite is added to the wastewater before the submersible sewage pump, and the wastewater and the purified diatomite achieves full contact, adsorption and polymerization through intense stirring of the pump in the lifting process; and in the purified diatomite reactor, suspended matters, oil pollutants, a part of COD and metal ions in the wastewater are subjected to reaction and are evenly mixed for adsorption and polymerization, then the treated wastewater is classified and is subjected to mud water separation in the purified diatomite reactor, and water in a gutter groove is disinfected by ultraviolet rays and then reaches the water quality standard of urban miscellaneous water. The method can realize full-automatic control, has simple process flow, and realizes unmanned management. The method can reuse the resources and realize the purposes of high efficiency, energy saving and resource regeneration.

The invention belongs to the field of submersible pumps, and particularly relates to a suspension device of a submersible pump. The device comprises an annular air bag annularly arranged outside the submersible pump and a connecting structure connected between the annular air bag and the submersible pump, the connecting structure comprises a top ring frame arranged in the annular air bag in a sleeving mode and a lower sleeving part connected to the bottom of the top ring frame and extending downwards to be provided with a sleeving ring part which is connected with a submersible pump main bodyin a sleeving mode, and the outer side of the top ring frame is connected with the annular air bag in a gluing or sleeving mode. According to the suspension device, the submersible pump is verticallyarranged in the central annular cavity area of the annular air bag, the peripheral area for centralizing the submersible pump is greatly increased, so that the buoyancy of the air bag is not only usedfor floating the submerged pump in water, but also used for embosoming the submerged pump and guaranteeing the standing state of the submersible pump, the submersible pump is fixed mainly through thelower sleeving part, so that the submerged pump can be vertically erected in the water as far as possible through the penetrating connection mode, a water inlet can be guaranteed to sink into the water, and the water inlet effect is ensured.

The invention discloses a high salinity wastewater electrolytic oxidation treatment device which is a radial electrode electrolysis reactor. The device consists of a water inlet pipe, an electrolysis column, electrode plates, a center support and a top cover; and the electrolysis device is cylindrical; the electrode plates are arranged radially; and the device is provided with a water charging and distributing device, a water discharging device and a sludge discharging device. All the parts of the device are movable, thus the parts can be assembled, disassembled, cleaned, maintained and changed conveniently; the technical problem that the device is easy to scale and corrode in the high salinity wastewater treatment can be solved; and the area of each electrode plate is large, the decolorization effect is good, the molecular structures of micromolecular organic materials in wastewater can be damaged and the biodegradability of wastewater can be increased. The device disclosed by the invention can well separate the three phases, namely water, gas and bubbles, and sludge; and the water-discharging effect can be ensured. In both continuous flow treatment and batch treatment, the inside of the device disclosed by the invention provides good hydrodynamic conditions, thus the reaction can be performed completely, the treatment efficiency is high, the electricity can be saved and the treatment cost can be reduced.

The invention provides a novel combined hardness remover which comprises a water inlet unit (1), a precipitate generation reaction unit (2), a filtering and separating unit (3), a water quality improvement unit (4) and a clean water tank (5) which are sequentially connected, wherein the water inlet unit (1) is connected with the lower part of the precipitate generation reaction unit (2); the filtering and separating unit (3) comprises an initial separating unit (31), a quartz sand filter layer (32) and a pebble layer (33) which are sequentially connected; the initial separating unit (31) is connected with the precipitate generation reaction unit (2); and the pebble layer (33) is connected with the water quality improvement unit (4). The device has the advantages of compact structure, small occupied area, flexible operation and wide application range, is convenient to use, can well ensure the total hardness removal effect in underground water and the integral effluent water quality, and has favorable popularization and application prospects.

The invention relates to the field of offset printing equipment, in particular to a dampening mechanism for offset printing equipment, and a printing machine. The dampening mechanism comprises part ofmounting frames; a cylinder, a dampening roller, a water distributing roller, a metering roller and a water tank roller are arranged between the mounting frames in a horizontal-rotation mode; the cylinder abuts against the dampening roller, the water distributing roller is arranged on the lower side of the dampening roller and abuts against the dampening roller, and the metering roller is arranged on the side, away from the cylinder, of the dampening roller and abuts against the dampening roller; the water tank roller is connected with the mounting frames through position control assemblies,a liquid storage tank is fixedly arranged on the lower side of the water tank roller, and the water tank roller extends into the liquid storage tank; and a temperature control assembly is arranged inthe liquid storage tank, the cylinder, the dampening roller and the water distributing roller are connected through a first transmission assembly, and the dampening roller, the metering roller and thewater tank roller are connected through a second transmission assembly. The effect of dampening on the cylinder can be additionally achieved, meanwhile the thickness of a water film can be changed, the purpose of meeting different offset printing demands is achieved, meanwhile the influence on the environment can be avoided, and the offset printing effect is further ensured.