57results about How to "Increase the sedimentation area" patented technology

The invention relates to the field of slime water concentration and clarification, in particular to a rake-free thickener with rotary annular channels. The rake-free thickener at least comprises a thickener body, and further comprises rotary annular channels, wherein the rotary annular channels are used for constraining upper-layer ore pulp inside the thickener to do reciprocatory motion; the rotary annular channels consist of a plurality groups of annular channels of which the diameters are increased gradually; adjacent annular channels are mutually communicated through connecting channels; each group of the annular channels comprises an upper annular partitioning plate and a lower inclined settlement plate; overflowing ore pulp is discharged out from overflow weirs; the overflow weirs comprise annular overflow weirs and composite overflow weirs; settled granules are fed into a bottom flow discharge system; the bottom flow discharge system consist of bottom flow collecting cabins, bottom flow holes and corresponding bottom flow pumps; the rake-free thickener further comprises a feeding pipeline and a driving stirring mechanism; a stirring machine is driven by residual power of the feeding pipeline conveying the ore pulp to rotate so as to uniformly mix the ore pulp with medicines. The rake-free thickener has the characteristics of being low in energy consumption, low in repairing workload, low in medicine consumption and free of rake.

The invention provides a sewage filter, which synthesizes a shallow tank theory, a dynamic coagulation theory, an accelerated coagulation theory and an inclined plate technology, effectively solves the problem of easiness in blockage of the traditional inclined plate. The sewage filter is used for subdividing raw motion water through by using filter masks and a plurality of through hole structures; and the raw water forms stable eddies at rear edges of plate holes of filter mask bodies. Under the entrainment action of the eddies, non-fluidic substances in the raw water are collected at centers of the eddies and get in continuous contact and collision with one another in eddy cores to undergo a flocculation reaction, and slides down along the mask bodies under the gravity action to settle into a mud collecting hopper, so that the purposes of removing suspended substances in the raw water and cleaning a water body are achieved. The sewage filter can rotate around an axis of a rotating shaft; and a strongly turbulent shear flow is formed through left and right repeated quick rotation to scour an inclined plate at a high speed and to clean deposits and blockages very conveniently.

This invention relates to pretreatment of sea-water for commercial desalination. In this invention, the seawater from natural sedimentation tank is pumped, and mixed with flocculent which is from flocculent tank and being after meterage by proportioning pump, into a three-step, mechanical agitation, flocculation reaction, tilted plate separator. And bacteriacide, after meterage by proportioning pump, is direct pumped into a mechanical agitating mixing pound. After mixing, flocculation, it overflows into said tilted plate separator. The upper clear liquid overflows into seawater storage tank for further purification. The waste sludge in the bottom of the tilted plate separator is discharged periodically. This invention provides a pretreatment of seawater for commercial desalination which overcomes the prior art shortcomings, with advantages of: simple process, easy operation and low cost.

The computerized water sample pre-treatment system for automatically monitoring sandy river water quality includes computerized central controller, submersed water pump in river, water flow bufferingpond connected to the submersed water pump, inclined pipe deposition pond connected to the bottom of the water flow buffering pond, laminar current deposition pond connected to the water overflow edge of the inclined pipe deposition pond, intermediate water tank connected to the laminar current deposition pond via valve, pressurizing water pump and solid-liquid separator, sampling water tank connected to the intermediate water tank via valve, pressurizing water pump, filter and pipeline, monitoring instrument connected to the sampling water tank, and automatic sampler with the sampling water tank via valve. The present invention can eliminate silt effectively and set reasonable operation parameters and is suitable for sample water supply for automatic water quality monitoring instrument.

The invention discloses an eccentric-type arc movable slant board which can be used for accelerating the deposition process in sewage treatment process, clearing a water body, and improving the sewage treatment effect. According to the invention, thin boards are wound to be arc with different sizes, and are ranked at equal or variable distances so as to form groups; an eccentric shaft is fixed on a rotary shaft; the clearances of adjacent arc boards form a plurality of shallow layer deposition tanks; and treated water bodies and settled deposition objects move mutually and stably in the deposition shallow layers and are separated; the eccentric arc slant boars are rotated to shift radially and tangentially, so that water bodies at the shallow layers are subjected to gradient shearing transformation, and flocculant cores are in mutual contact, collide, adhere and polymerize so as to form dense flocculant bodies so as to be separated from water, and raw water is cleared and purified. The eccentric-type arc movable slant board provided by the invention can rotate around the rotary shaft, forms intense and turbulent shearing flows through rapid and reciprocating rotation left and right, is subjected to the high-speed washing effect, and can be used for eliminating possible deposition and blocking conveniently.

The invention discloses an inclined plate type rotational flow sand setting system. The system which comprises a tank, a sand lifting pipeline vertically arranged in the middle part of the tank and a sand-lifting air-distributing structure is characterized in that: the lower half part of the tank is a sand hopper part, the upper half part of the tank is a sand setting zone, and an inflow port and an outflow port are arranged on the tank; the upper end of the sand lifting pipeline is connected with a sand-water separator; the bottom surface of the sand setting zone is provided with an inclined plate precipitation structure; the tank is provided with an inner wall jet structure; the lower end of the sand lifting pipeline is provided with a sand lifting pipeline inlet structure; and the sand-lifting air-distributing structure comprises a pressure air pipeline which is vertically arranged and is in parallel with the sand lifting pipeline, the lower port of the pressure air pipeline is transversely communicated with the middle part of a horn body, and the position of the lower port of the pressure air pipeline is higher than the position of the lower inlet of the sand lifting pipeline. The inclined plate rotational flow sand setting system of the invention has the advantages of good sand setting effect, high processing efficiency, low enforcement and maintenance cost (close to no maintenance), good operation continuity, and convenient maintenance and servicing.

The invention discloses a sewage treatment device, which comprises: an integrated main treatment device with a coagulating pond, a gravity reinforcement pond, a ripening pond and a tipping clear pond, wherein, connecting the clear pond bottom and pump and separator by pipes; a separator, and a sludge pump. The opposite treatment method comprises: using diatomite as the sped-up medium for clear pond to increase flocculating setting speed and improve water purification ability. This invention also has well denitrification effect, and fits to recovery for output water from urban sewage treatment plant and unstable domestic sewage.

The invention provides an open ground surface water source heat pump water intaking water treatment system, comprising a water intaking system and a filtering system connected in series with the water intaking system; wherein the water intaking system consists of a water intaking head A, the water intaking head B, a water intaking pump a, a water intaking pump b, pipelines and valves; the pipelines of the water intaking head A and the water intaking head B are arranged and connected in parallel; the filtering system is formed by at least two filtering pipelines connected in parallel; and the output end of the filtering system is connected with a heat pump set Z. The system can not only efficiently avoid the blockage of the water intaking head by floating materials, but also efficiently remove sand and algae, thus preventing the floating materials, mud, sand, and the like from blocking and eroding a channel of the heat pump system and preventing the algae and the like from forming biologicalfouling on the pipe wall of the heat pump system. The back washing of the water intaking head of the system is controlled by a valve arranged on a pipeline connecting the water intaking head and a water intaking pump, thus no additional back washing system is necessary; and the back washing of a filter does not need the additional back washing system and can be achieved while the back washing of the filter is controlled by the inlet and outlet valves of the filter. The system can not only save the power consumed by the drainage of the sand and the mud with water, save infrastructure and operation expenses; but also greatly reduce the drainage, erosion and scale formation of the pipeline of the heat pump system and improves the heat exchange efficiency of the open ground surface water source heat pump system.

The invention discloses a glassware processing wastewater treatment technology. The technology comprises the following steps: 1, processing wastewater is discharged to an oil separation pool, and water discharged from the oil separation pool flows to an adjustment pool; 2, wastewater discharged from the adjustment pool is pumped to a coagulation reaction pool, calcium hydroxide is added to wastewater to adjust the pH value to 7.5-8.5, a coagulant PAC and a flocculating agent PAM are added to carry out a coagulation reaction, the obtained wastewater automatically flows to an inclined tube sedimentation pool through a water distribution tank in order to realize solid-liquid separation, and sludge in a bucket is discharged to a sludge pool; 3, water discharged from the sedimentation pool automatically flows to a sand filter for sand filtration, and water discharged from the sand filter flows to a clear water pool; and 4, sludge in the inclined tube sedimentation pool is pumped to a sludge concentration pool through a sludge pump and is concentrated, the obtained sludge concentrate is press-dried to form sludge cakes, the sludge cakes are artificially cleaned and bagged, and a filtrate flows to a wastewater adjustment pool. The technology has the advantages of simplicity, increase of the processing capability of the sedimentation pool by utilizing a laminar flow principle, shortening the sedimentation time by shortening particle settlement distances, and increase of the processing efficiency by increasing the sedimentation area of the sedimentation pool.

The invention relates to a method for dephosphorization of electroplating wastewater. The method includes the following steps: enabling the electroplating wastewater to sequentially pass a hydrolysis acidification tank, an activated sludge system, an inclined tube sedimentation tank, an ozone sedimentation tank, an aerated biological tank, a Fenton coagulating basin and a chemical precipitation tank, and discharging the electroplating wastewater up to the standard. The 'biochemical treatment-advanced oxidation-coagulating sedimentation' processes are integrated for deep treatment of non-positive phosphate in electroplating industry wastewater electroplating plots. By the method, the problem that it is not easy for the phosphorus index of the electroplating plots to reach the standard stably for a long time can be solved, wastewater treatment efficiency and social and economic benefits are improved, and clean production, energy conservation and emission reduction are realized.

The invention discloses an efficient hydraulic circulation clarifier and aims to provide a circulation clarifier which is high in operation stability, reduces chemical and energy consumption, can better adapt to changes of water volume and water quality during actual operation and reduces operation cost of water treatment facilities. The efficient hydraulic circulation clarifier adopts a method implemented according to the following steps: firstly, raw water enters a water inlet pipe at the clarifier bottom, is sprayed into a Venturi tube at a high speed through a spray nozzle and a horn mouth, so that vacuum is formed near the horn mouth in the lower part of the Venturi tube and sucks a large amount of backflow sludge, the backflow sludge and the raw water mix and react fiercely in the Venturi tube, and then a product enters a first flocculation basin and a second flocculation basin; a sludge and raw material mixed solution overflowing from the second flocculation basin is subjected to sludge-water separation in a separation chamber in a settling region, clear water moves upwards and is collected by a water collection tank and drained outward, one part of the settled sludge enters an automatic sludge discharge pipe, and the other part of the settle sludge is sucked by the Venturi tube, enters a reaction system and is recycled continuously.

The invention relates to an improved multi-layer flat unit combined settling pond process which specially aims at urban sewage treatment and also can be used for feed water treatment and industrial wastewater treatment. The process has the most obvious characteristics that a circular settling flat plate and scrapers (scrapers on odd and even layers are different) are integrated into turntables, multiple turntables are overlapped to form units, the scrapers on the odd layers rotate (as being arranged on a central transmission shaft), the scrapers on the even layers are static (as being fixed on a frame of the units), and the settling and scraping functions are realized. The multiple units are arranged in a clarification area of the settling pond, and a settling pond mud scraper is additionally arranged in a concentration area on the lower part of the settling pond. The process has the beneficial effects that a mechanical structure of the multilayer flat unit is simplified, the operating stability is improved, the distance between the flat plates is shortened, and the number of the flat plates is increased, so that the total settling area of the settling pond is increased, the surface hydraulic loading is reduced, high-concentration activated sludge in the system is maintained, and the floor space of the settling pond is obviously saved. Moreover, the turntables can be molded at a time, and the cost is reduced.

The invention provides a sewage filter, which synthesizes a shallow tank theory, a dynamic coagulation theory, an accelerated coagulation theory and an inclined plate technology, effectively solves the problem of easiness in blockage of the traditional inclined plate. The sewage filter is used for subdividing raw motion water through by using filter masks and a plurality of through hole structures; and the raw water forms stable eddies at rear edges of plate holes of filter mask bodies. Under the entrainment action of the eddies, non-fluidic substances in the raw water are collected at centers of the eddies and get in continuous contact and collision with one another in eddy cores to undergo a flocculation reaction, and slides down along the mask bodies under the gravity action to settle into a mud collecting hopper, so that the purposes of removing suspended substances in the raw water and cleaning a water body are achieved. The sewage filter can rotate around an axis of a rotating shaft; and a strongly turbulent shear flow is formed through left and right repeated quick rotation to scour an inclined plate at a high speed and to clean deposits and blockages very conveniently.

The invention discloses an isolator for gaps of heavy metal, comprising an isolator shell, wherein a water inflow structure, a mixing chamber, a first reaction chamber, a second reaction chamber and a separation chamber which are successively communicated are arranged in the isolator shell from bottom to top. A water outlet corresponding to the lower part of the second reaction chamber is furtherprovided with a bevel board reaction zone in which a bevel board assembly for guiding is arranged. A bevel board is used for increasing the settling area under the limited settling volume, thereby enhancing the settling effect.

The invention discloses a multistage precipitating device for industrial sewage treatment. The device comprises an outer barrel, an inner barrel, a water inlet pipe, a sand collecting hopper, a plurality of supporting legs, a discharge valve I, a plurality of short joints, an annular pipe and a water outlet pipe, wherein the water inlet pipe is arranged on one side of the upper portion of the inner barrel and the water inlet pipe is tangentially connected to the inner barrel; the outer barrel is arranged on one side out of the inner barrel; the short joints which are uniformly distributed arearranged on one side of the upper portion of the outer barrel and are connected to the outer barrel in a through manner; and the short joints are connected to the annular pipe, the water outlet pipe is arranged on one side of the short joints, the sand collecting hopper which is funnel-shaped is arranged on one side of the lower portion of the outer barrel, the supporting legs are arranged on oneside of the outer side of the sand collecting hopper, and the discharge valve I is arranged on one side of the lower portion of the sand collecting hopper. The water inlet pipe is tangentially connected to the inner barrel, sand is removed by rotational flow in the inner barrel to remove most precipitates, and precipitation is performed in the outer barrel, so that the sewage precipitating effectis enhanced, and the sewage precipitating efficiency is improved.

The invention relates to the technical field of sewage processing facilities, in particular to a circumferentially-feeding and circumferentially-discharging flow assisting type sedimentation basin. The sedimentation basin comprises a basin body, a water distribution annular well, a water collection annular well and a mud scraping and residue discharging machine. The water distribution annular well is arranged outside the basin body in a surrounding mode. The water collection annular well is arranged outside the water distribution annular well in a surrounding mode. A sludge hopper is arranged at the center of the bottom of the basin body. Multiple layers of sedimentation plates are arranged on the side wall of the basin body in the vertical direction in a surrounding mode, and therefore the sedimentation area is enlarged, the occupied area is greatly reduced under the condition that the processing amount is ensured, guide plates are arranged on the portions, in all sedimentation layers, of the basin body in the circumferential direction in a surrounding mode, a plurality of water collection pipes evenly arranged around the basin body are located on the upper sides of the guide plates respectively, a plurality of water inlet and water distribution pipes evenly arranged around the basin body are located on the lower sides of the guide plates respectively, the water inlet and water distribution amounts and the water outlet amounts between all the sedimentation layers in the basin body are kept consistent, and therefore it is ensured that water flow in all the sedimentation layers is uniform.

The invention discloses a full-automatic high-efficiency inclined tube thickener; wherein, two ends of a bridge frame are fixed on a round concrete pool, and the bottom in the pool is designed to be a taper shape, and a central column provided with an outer wall wrapped by a steel tube is erected at the center of the pool bottom, and the upper end of the central column is connected with the middle of the bridge frame through a central shaft. The central column and the central shaft are respectively connected with the pool bottom and the bridge frame through bearings. An electric-control cabinet and a hydraulic station which are arranged on the bridge frame are connected with the upper end of the central shaft through a driving rake-lifting device. A steady flow barrel is arranged on the outer side of the central shaft, and a shaving-collecting device is fixed on the outer wall of the central column. An inclined brace is extended from the central shaft to be connected with the shaving-collecting device. Inclined tube brackets are arranged along the wall of an inner cavity of the round concrete pool and the whole section face, and then glass reinforced plastic beehive inclined tubes are arranged on the base of the inclined tube brackets. Compared with the prior art, the full-automatic high-efficiency inclined tube thickener of the invention has the beneficial effects that a backwash settlement is adopted and is proper; the occupying area is small and the settlement area is big; three zones are distinct and the settlement effect is better; the settlement time is short and the manufacturing cost can be conserved; accident hidden troubles can be eliminated to guarantee a normal running; the mechanical mechanism is excellent and the running is stable; the glass reinforced plastic inclined tube has high intensity and is anti-aging and anti-corrosion; the management is convenient and automatic control of the whole process can be realized.

The invention discloses a horizontal self-overturning efficient sedimentation tank. A plurality of partition plates are arranged in the tank body to divide the tank body into a plurality of water inlet areas and a plurality of settling areas from left to right; a plurality of water distribution ports are formed in the partition plates; a plurality of horizontal turning plates are arranged in eachsettling area and are positioned at the water distribution port; a rotating shaft is arranged in the settling area close to the partition plates; the rotating shaft is horizontally arranged and parallel to the partition plates; the horizontal turning plate is located on the rotating shaft and can rotate along the rotating shaft, one end of the horizontal turning plate is placed on the partition plates at the water distribution ports, the other end of the horizontal turning plate is a mud falling end, and the area of the horizontal turning plate located at the water distribution port with the rotating shaft as a partition line is smaller than that of the mud falling end. The innovative points of the invention are as follows: the movable settling area is increased in the tank body so that the settling efficiency is increased, and the problem that the inclined pipe filler is blocked due to sludge adhesion is solved by utilizing instantaneous self-overturning sludge discharge.

The invention relates to the field of coal slime water concentration and clarification, in particular to an efficient concentrator with self-cleaning and rake pressing prevention functions.The efficient concentrator at least comprises a concentrator body, a diffuser, a high-pressure dredging pipeline, base flow openings and hydraulic rake lifting devices.The diffuser and the high-pressure dredging pipeline are used for cleaning material layers in the concentrator, the base flow openings are used for draining base flow in the concentrator, and the hydraulic rake lifting devices are used for lifting up a rake frame; the base flow openings include a central base flow opening and side edge base flow openings, the central base flow opening is formed in the center of a circular ring at the bottom of the concentrator, and the side edge base flow openings are formed in a circular ring of the central base flow opening in the perpendicular direction and the horizontal direction.The efficient concentrator has the advantages that materials can be discharged by the aid of the hydraulic rake lifting devices, the high-pressure dredging pipeline and the multiple base flow openings, accordingly, stable concentration of the material layers in the concentrator can be guaranteed, the rake frame can work smoothly, and 'rake pressing' phenomena can be completely eradicated; the efficient concentrator further comprises a driving stirring mechanism and composite overflow weirs, accordingly, ore pulp and chemicals can be uniformly mixed with one another, upper-layer clarified liquid can be timely drained, and the efficient concentrator is low in energy consumption, maintenance and chemical consumption.

The invention discloses an acid liquid collection device for polar plate production. The acid liquid collection device comprises an acid liquid collection mechanism, a preliminary sedimentation mechanism, a filter mechanism and an acid liquid storage mechanism, the acid liquid collection mechanism comprises a collection tank and a guide pipe, the preliminary sedimentation mechanism comprises a sedimentation pond, a mud discharge pipe, a mud discharge valve, a collection box and a first magnetic valve, the filter mechanism comprises a liquid inlet pipe, an acid pumping pump, a filter valve, anacid conveying pipe, a mud discharge pipe and a flowmeter, and the acid liquid storage mechanism comprises an acid liquid storage tank, a third liquid inlet, a second liquid level sensor, an acid outlet and a liquid drain valve. The invention further discloses an operation method of the device. The acid liquid sediments large-particle lead plaster through the sedimentation pond, the sedimented acid liquid is pumped into the filter valve by using the acid pumping pump, small-particle lead plaster is filtered by acid liquid through the filter valve, and is collected in the acid liquid storage tank along the acid conveying pipe, the secondliquid level sensor is arranged in the acid liquid storage tank, and the effect of monitoring the acid liquid reserve can be played. The whole device has high automation degree and high acid liquid collection efficiency.

The invention relates to the technical field of municipal sewage treatment, in particular to a municipal sewage sedimentation tank capable of realizing efficient sedimentation of sewage. The municipal sewage sedimentation tank comprises a raw water tank and a sedimentation tank, and the sedimentation tank comprises a reaction cavity, a filter cavity, an agent assembly, a stirring assembly, a filter screen, a cleaning assembly and a discharge assembly, sewage is discharged into the reaction cavity of the sedimentation tank through the raw water tank, a stored flocculating agent is put into the reaction cavity through the agent assembly, then the flocculating agent and a sewage tank are fully stirred through the stirring assembly, a driving part drives an inclined plate to turn over to fully stir the flocculating agent and the sewage tank, and after the driving part stops, the flocculating agent and the sewage tank are fully stirred. Precipitation is accelerated through the included angle formed by the inclined plate and the water surface, sewage forms floccules through stirring, the floccules are isolated by the filter screen through the water level, the floccules adhering to the filter screen are removed through the cleaning assembly, meanwhile, the floccules can be swept down to the bottom of the reaction cavity, sewage precipitation is accelerated through adsorption of the floccules, and the floccules are sucked and discharged out of the sedimentation tank through the discharge assembly, so that the sedimentation efficiency is improved.

The invention provides a rotary barrel type sewage precipitator with an inclined plate, which can be used for accelerating a precipitation process in sewage treatment, clarifying a water body and improving the sewage treatment effect. According to the rotary barrel type sewage precipitator, a movable barrel which is internally provided with overlapped and arrayed parallel arc-shaped plate sets is eccentrically and fixedly arranged on a rotary shaft; a plurality of shallow-layer precipitation tanks with great length are formed by gaps between the adjacent arc-shaped plates; the water body to be treated and deposited sediments move mutually stably and are separated in a precipitation shallow layer. When the rotary shaft rotates, the radius vectors from a rotary center to all tank walls are different and an eccentric barrel wall carries out displacement in the radial direction (the radial distance from the barrel wall to the rotary center is lengthened or shortened); the shape of the barrel wall enforces fluid to centrifugally or concentrically flow to form continuous fluid layer flow movement; retardation balance is damaged continuously and floc cores are contacted, collided, adhered and polymerized mutually to form dense floc which separated from water; raw mater is clarified and purified. The rotary barrel type sewage precipitator is rotated around the rotary shaft, and shearing flow is formed on the tank walls and has a flushing effect on sludge; the possible sludge and blocks can be cleaned very conveniently.

The invention discloses a cleaning system of a prefabricated part annular production line. The system comprises a first settling pond for cleaning a hopper of a stirring station main engine, a first settling pond set for cleaning a feeding car, and a second setting pond set for cleaning a hopper on a cloth rack. Accordingly, cleaning links are set at three different joints in the concrete transporting process, the production line cleaning pressure is relieved, occupation and waste of the production time is lowered, meanwhile, the settling area is enlarged, concrete sewage is promoted to be settled completely, clean sewage can be recycled, the production takt is not affected, the production links are more efficient and centralized.

The invention discloses an emulsion low-pressure treatment device which comprises a demulsification tank, a primary sedimentation tank, a reaction tank, an advanced oxidizer, a secondary sedimentationtank and a clear water tank in sequential serial connection. Wastewater is primarily treated biochemically in the demulsification tank and the reaction tank, the advanced oxidizer comprises a reactorbarrel, a reflective diversion barrel is arranged in the reaction barrel, a filler area is formed between the reflective diversion barrel and the reactor barrel, a water incoming pipe and an air incoming pipe penetrate the filler area on the lower portion of the reactor barrel, a water distributor and an aerator are arranged at an opening of the bottom of the reflective diversion barrel, and a water discharging pipe is arranged on the upper portion of the reactor barrel; titanium dioxide catalysis plates divide the reflective diversion barrel into a plurality of longitudinal oxidation areas,ultraviolet lamp poles are arranged at the centers of the oxidation areas, the advanced oxidizer sectionally irradiates, the catalysis plates are completely within an optimal catalysis distance of theultraviolet lamp poles, and reflective diversion barrel can reflect ultraviolet emitted from the ultraviolet lamp poles, enhance illumination and improve photocatalysis efficiency.

The invention discloses a lake water purifying treatment system for improving lake water quality. The lake water purifying treatment system comprises a water inlet pump station, a water distribution well, a purifying tank, a water outlet pump station, a sludge tank and a device room. A first lifting pump is arranged in the water inlet pump station and is connected with the water distribution wellthrough a first pipeline, the water distribution well is connected with the purifying tank through a second pipeline, the purifying tank is connected with the water outlet pump station through a thirdpipeline, and a second lifting pump is arranged in the water outlet pump station and discharges purified and treated lake water into a lake through a fourth pipeline. The sludge tank is connected with the purifying tank through a fifth pipeline. The device room comprises a dosing chamber and a fan chamber, wherein a dosing system is arranged in the dosing chamber and is connected with a sedimentation basin through a dosing pipeline, and an air blower is arranged in the fan chamber and is connected with an anoxic pond and an aerobic tank through a sixth pipeline. The lake water purifying treatment system is high in sewage treatment efficiency and good in sewage purifying effect, and meanwhile treated sludge can serve as a fertilizer for reuse.

The invention discloses a wastewater treatment device and technology for mariculture. The device comprises a mixing unit, a microwave flocculation unit and a solid-liquid separation unit. The mixing unit is used for mixing mariculture wastewater with an agent for obtaining a mixed solution; the microwave flocculation unit is used for making contaminant in the mixed solution receive microwaves forgenerating floccule sediment; the solid-liquid separation unit is used for separating floccule in the mixed solution from water. According to the wastewater treatment device and technology for mariculture, after a flocculant is mixed with the mariculture wastewater in the mixing unit, the mixed solution enters the microwave flocculation unit, and under the effect of microwaves, a sludge structureis subjected to destabilization and sufficient flocculation in a short time. Then the mixed solution enters the solid-liquid separation unit, and under the laminar condition, sludge in the wastewateris precipitated on an inclined plate. The whole device is low in cost and small in occupation floor, and continuous treatment of the mariculture wastewater is achieved.

The invention relates to the field of coal slime water concentration and clarification, in particular to a concentrator with low chemical consumption and composite overflow weirs.The concentrator at least comprises a concentrator body.An overflow weir comprises annular overflow weirs and the composite overflow weirs, the annular overflow weirs are arranged on the periphery of the overflow weir, the composite overflow weirs are annularly arranged along the inside of the overflow weir, an inflation adjusting lifting and floating barrier is arranged on a side of each composite overflow weir and is used for adjusting overflow discharge rates, oblique settlement plates are arranged on the lower portions of the composite overflow weirs in fixed connection modes, and final clarification settlement treatment on rising overflow water can be carried out.The concentrator has the advantages that the movement speeds of horizontal flow in the concentrator body can be effectively reduced by the composite overflow weirs, accordingly, favorable settlement conditions can be provided for particles in ore pulp, the peripheral annular overflow weirs and the composite overflow weirs are jointly operated, and effects of obviously improving the processing efficiency of the concentrator and the clarity of the overflow water can be realized; the concentrator further comprises a driving stirring mechanism, the driving stirring mechanism can be driven by ore pulp feeding driving force to rotate, accordingly, the ore pulp and chemicals can be uniformly mixed with one another, and the concentrator is low in energy consumption, maintenance and chemical consumption.

The present invention relates to a water quality automatic monitoring water sample pretreatment system for sandy rivers which realizes multiple water sample processing working modes by computer, which comprises a computer central controller and a submersible pump in the river. The bottom of the flow buffer tank is connected to the inclined tube settling tank, the overflow edge of the inclined tube settling tank is connected to the advection settling tank, the advection settling tank is connected to the intermediate water tank by valves, pressurized water pumps and solid-liquid separators, the intermediate water tank is connected by valves, The pressurized water pump, filter, and pipeline are connected to the sample water tank, the sample water tank is connected to the monitoring instrument, and the sample water tank is connected to the automatic sampler through the valve, which can effectively remove the sediment and set the system working parameters reasonably. The sample water supply for the automatic water quality monitoring instrument of the river with a large range of variation in the amount of sand with the seasons.