439results about How to "Improve sedimentation efficiency" patented technology

A method for the removal and sequestration of ammonia nitrogen from anaerobic fermentation effluent while producing a higher BTU biogas. The method includes the steps of removing the slurry from the digester, stripping the ammonia from the slurry or portion thereof with a high BTU biogas, blending the stripped ammonia with the digesters biogas to remove the carbon dioxide and precipitate ammonium bicarbonate / carbonate as a solid while producing a high Btu biogas, a portion of which is used to strip the ammonia and CO2 from the slurry. The process removes ammonia nitrogen from the digester effluent while producing a high Btu biogas and a solid ammonium bicarbonate / carbonate product. Ammonia stripping is accomplished with a recycled stripping gas deficient in CO2 and ammonia that is capable of removing the CO2 and ammonia from solution by virtue of the lower partial pressures of CO2 and ammonia in the stripping unit.

The invention discloses a magnetic separation method for a mine water underground treatment. The method comprises: removing large particle impurities and floating substances in mine water; adding a magnetic seed and a coagulant; stirring for 1-2 min at a rotation speed of 200-250 rotation / min; adding an auxiliary coagulant; stirring for 1-2 min at a rotation speed of 20-50 rotation / min; stirring for 3-5 min at a rotation speed of 10-20 rotation / min; conveying the water with the magnetic flocculation treatment to a precipitation tank; and carrying out nature precipitation through the floc weight, wherein the upper layer clear water can be subjected to standard discharge or be reused, the precipitated magnetic sludge is dispersed, the magnetic seed is separated to be recycled, and the remaining non-magnetic sludge is dewatered and then is conveyed to the on-well, wherein a water content of the dewatered sludge is less than 60%. The invention further discloses a magnetic separation apparatus for the mine water underground treatment, wherein the apparatus is designed according to the method. According to the present invention, the method and the apparatus are matched appropriately, an integration degree is high, an occupation area is small, energy consumption is low, operation cost is low, a treatment effect is good, and the method and the apparatus are especially suitable for construction under the mine.

The invention discloses a small-sized rapid-precipitation environment-friendly sewage treatment device, which comprises a sedimentation tank, a driving motor and a filter tank; A brush plate; a drive shaft is provided under the filter plate, and spiral blades in opposite directions are provided on the left and right sides of the drive shaft. The present invention is equipped with reverse spiral blades and trapezoidal material guide plates to horizontally stir and mix the sewage and flocculants, so that the flocculants can be rapidly diffused and mixed, improving the efficiency of flocculation and sedimentation, and at the same time reducing the impact on the settled sludge. Stir to improve the efficiency of sedimentation; the present invention is provided with a reciprocating brush to avoid clogging of the filter holes and ensure normal filtering; the present invention is provided with a filter plate, a sandstone packing plate and an activated carbon packing plate that are easy to disassemble, and has better Excellent purification effect, easy to disassemble and clean.

The invention relates to a synthetic method and the application of a macromolecule chelating agent with polyvinyl alcohol as a fundamental chain. The hydroxyl is used in a polyvinyl alcohol structure unit to react with halogenating alkylene oxide under the acid condition to produce etherified polyvinyl alcohol, and then is reacted with organic amine under the alkaline condition, and then the amido polyvinyl alcohol ramification is obtained through the crosslinking and of chain increasing halogenating alkylene oxide or dihaloalkane or epoxy resin. The amido polyvinyl alcohol ramification has reaction with carbon bisulfide under the alkaline condition to produce a macromolecule chelating agent having good absorption property to heavy-metal ion. The polyvinyl alcohol which is macromolecule is used, and the polyvinyl alcohol has a plurality of hydroxyl as the fundamental chain in order to increase the product molecular weight and the effective group content, thereby improving the collecting efficiency and the precipitation effect to the heavy-metal ion. The macromolecule chelating agent of the invention deals with the heavy-metal ion in various waste liquor, thereby having high collecting efficiency, complete eliminating, bulky and compact garrulous body, rapid sinking, etc.

The invention discloses a heavy metal precipitator. It conquers the disadvantages of low utilization factor of raw material, and weak complexation ability, incompact wadding and slow speed to deposit existed in the heavy metal precipitator in existing.Especially for the stability complexation heavy metal ion wasting water, it can remove stability heavy metal ion. Moreover, it has decolor function and can be used in the process for heavy metal ion.

The invention provides a catalytic oxidation-compound flocculation integrated treatment process which aims to solve the problem that organic comprehensive waste water is difficult to treat because the organic comprehensive waste water contains organic substances difficult to biologically degrade. The treatment process integrates catalytic oxidation, Fenton oxidation, compound flocculation, high-efficiency precipitation and other technical advantages; a high-efficiency catalyst is used to improve the treatment efficiency or biodegradability; and a compound flocculant is used as the core to simplify the treatment process and ensure the stable treatment effect, thereby achieving the catalytic oxidation-compound flocculation integration. The invention has the characteristics of concise technical line, high treatment efficiency and simple operation process.

The invention discloses a method for treating reverse osmosis concentrate. The method comprises the step of sequentially carrying out crystallization and membrane distillation on the reverse osmosis concentrate. The method is carried out at a normal pressure and a low temperature, and has the characteristics of simplicity in operation and convenience in management. The concentration of scaling ions in the reverse osmosis concentrate is reduced through induced crystallization softening, the membrane distillation concentration process can be carried out under the condition of lower membrane pollution, high-quality industrial pure water is obtained when the reverse osmosis concentrate is greatly reduced, and can be recycled in industrial production, thus the problem of treating the reverse osmosis concentrate is successfully solved, and a wide application prospect is achieved.

The invention discloses a repair method of chromium-contaminated soil, which belongs to the technical field of environment engineering. The method comprises the following steps: reducing hexavalent chromium in the chromium-contaminated soil, removing trivalent chromium and performing sewage treatment. Ferrous sulfate is added into the chromium-contaminated soil, and the reaction environment is adjusted, so that the efficiency for reducing the hexavalent chromium in the chromium-contaminated soil into the trivalent chromium is improved, and conditions are provided for removing chromium; chromium in the soil is extracted by adopting disodium ethylenediamine tetraacetate, the removal rate of the chromium in the soil is increased by adopting microwave heating, and the reaction time is shortened; sodium sulphide is added into chromium sewage, and the reaction environment is adjusted, so that the settling efficiency of heavy metals in the sewage is improved; and additionally, the sewage is converted into disodium ethylenediamine tetraacetate solution, so that resource recovery and utilization are realized. According to the method, the hexavalent chromium is converted into the trivalent chromium to be treated, so that the environmental risk in the repair process is reduced; the chromium-contaminated soil is converted into chromium sewage for treatment, so that the treatment efficiency is improved, and the treatment effect is guaranteed; and the method has the characteristics of no secondary pollution, high efficiency, rapidity, high resource utilization rate and the like.

The invention discloses a wastewater sludge recovery treatment device. The device comprises a base and a sludge recovery bin, wherein the sludge recovery bin is fixed to the base through a supportingcolumn, a sewage inlet pipe is connected with one side wall of the sludge recovery bin, a first driving motor is fixed to the center part of the top of the sludge recovery bin through bolts, a stirring shaft is rotatably connected with the bottom of the first driving motor, a filtering cover is fixed to the interior of the sludge recovery bin, water outlet pipes are connected with the outer surface wall of the bottom of the sludge recovery bin, and a first sludge discharging pipe is connected with the center part of the bottom of the filtering cover. In the wastewater sludge recovery treatmentdevice, the sludge recovery bin, a dehydration box and a second sludge discharging pipe which is provided with electric heating pipes and used for drying are arranged, thus sludge in wastewater can be directly recovered, dehydrated and dried, the integration level is high, functions are complete, use is convenient, the sludge subjected to recovery treatment can be directly transferred, and duringtransferring, no sewage percolates, so that the environment is protected.

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 a turn-back flow high-efficiency rectangular double-layer settling pond. In the settling pond, the body of the pond is divided into an upper layer and a lower layer by a partition board which is arranged horizontally, wherein a high-efficiency lateral flow inclined plate is arranged in a lower layer settling area so as to strengthen the suspended matter trapping efficiency according to a shallow pond principle; sewage mixed solution enters an upper layer settling area from a water hole in one end of the partition board for further solid-liquid separation by tranquilflow settling, and the effluent is collected in and flows out from a water collection tank arranged at a water outlet end; and the settled sludge is scraped and absorbed by a chain-plate type mud scraper or mud scraper and absorber which can adapt to the unique structure of the settling pond, and at the same time, scum is scraped into a scum collection device. Compared with the prior part, the settling pond has the advantages of avoiding the phenomena such as short flow, obvious dead water area and sludge floating in a common settling pond, along with high settling efficiency, smaller floor area and lower operation cost.

The invention discloses a river channel segmental desilting construction method, and belongs to the technical field of river channel regulation. According to the river channel segmental desilting construction method, a river channel is segmented, flexible dams are constructed respectively, silt deposition ditches are excavated in front of dam bodies, and silt at the bottom of the river channel is treated by using the water head difference generated after dam construction and water flow impact force generated after water gates are opened for drawing off water. The structural form of the self-floating type dam bodies is adopted in the river channel segmental desilting construction method, the flexible dams can descend automatically according to variations of the river water level, then segmental treatment is conducted, and therefore deposition conditions of the silt can be improved easily; the drainage gates are used in cooperation with the segmental silt deposition ditches, so that the silt deposition efficiency is improved while the water is drained; net-shaped cover plates are arranged above the silt deposition ditches to be used for shielding impurities and protecting personal security; inorganic composite agents are added for conducting innocent treatment on the silt, so that secondary pollution is prevented from being caused to the environment in the process of recycling the soil body; water drainage and solidification of the silt are accelerated, so that the treatment efficiency of the silt is improved.

The invention provides a coagulation sedimentation method for advanced treatment of printing and dyeing wastewater, which belongs to the field of organic wastewater advanced treatment. After the biochemical treatment, the printing and dyeing wastewater flows into a coagulation sedimentation tank where the wastewater is thoroughly mixed with the coagulant agent and the sludge in the mixing region and then the mixture undergoes the coagulation sedimentation in the coagulation region; the sludge is returned after the coagulation sedimentation and mixing; the wastewater, the coagulant agent and the returned sludge are subjected to the mixed treatment; and the effluent is collected and then discharged. The coagulation sedimentation method enhances the effect of coagulation sedimentation treatment, reduces the consumption of coagulant agent and increase the coagulation sedimentation efficiency. The water quality of the effluent is significantly better than that of the effluent from the coagulation sedimentation free of return tank, and the sedimentation efficiency is also improved. The biochemical tail water of the printing and dyeing wastewater after the coagulation sedimentation treatment has high water quality of the effluent, meets the national discharge standard of pollutants, and has high economic, social and environmental benefits.

The invention relates to the field of city rainfall regulation and storage control, in particular to a rainwater particle separation and regulation and storage system. The rainwater particle separation and regulation and storage system comprises a regulation tank. A first overflow plate and a second overflow plate are parallelly disposed in the regulation tank at intervals. The first overflow plate and the second overflow plate cut the regulation tank into a rainwater channel on the right of the first overflow plate, a sedimentation tank between the first overflow plate and the second overflow plate and a draining tank on the left of the second overflow plate. A plurality of sedimentation plates made of plastic plates are parallelly disposed in the sedimentation tank. The inclination angles of the sedimentation plates are changed through hydraulic power. A sediment washing device and a sediment accumulation tank for collecting particles such as sediment are further disposed in the sedimentation tank. The sediment accumulation tank is located at a low position at the bottom of the sedimentation tank. A submersible sewage pump for discharging the particles such as the sediment is disposed in the sediment accumulation tank. The rainwater particle separation and regulation and storage system is simple in structure, convenient to operate, high in automation level and worthy of popularization.

The invention discloses intensive integrated water purification equipment. The equipment is separated into five sections according to difference of water purification units, and the five sections are connected through flanges; and the equipment is provided with a mud collecting area, a primary flocculation area, an inner-cylinder clustering flocculation area / and an outer-cylinder sludge concentration area, a sludge separation area, an inclined tube sedimentation area, a backwashing gas distribution area, a filtration area, and a clear water area from bottom to top. The equipment is provided with devices such as an agitator blade used for particles to form agglomerated floc, a rotary gas distribution plate used for gas-water backwashing of a filter material, small-space spiral sloping panels used for concentrating sludge and the like; and the whole equipment is simple in structure, water purification functional units are compactly connected, the flat plane utilization rate is high, and the equipment is convenient to operate, can maximize the water purification function, and has important practical significance for medium and small water supply systems.

The invention relates to an oil refining catalyst wastewater zero-discharging treatment method. The oil refining catalyst wastewater zero-discharging treatment method comprises the following steps that (1) oil refining catalyst wastewater is treated in a high-density sedimentation tank to obtain sedimentation wastewater; (2) the sedimentation wastewater is fed into a multi-media filter to obtain produced water of the multi-media filter; (3) the produced water of the multi-media filter is fed into an ultra-filtration system and is further treated to obtain ultra-filtration water; (4) the ultra-filtration water is regulated to be weak-acidic and then is fed into a sea water desalination type reverse-osmosis system, and reverse-osmosis concentrated water is obtained through treatment; (5) the reverse-osmosis concentrated water is fed into an efficient electrodialysis system for concentration or into a conventional reverse-osmosis system for reverse osmosis respectively according to the salt content of the reverse-osmosis concentrated water; (6) the electrodialytic concentrated water is fed into a mechanical vapor compression (MVR) evaporator for concentration, the concentrated liquid is fed into a waste heat multiple-effect evaporative crystallization system, further evaporative concentration and crystallization are conducted on the concentrated wastewater, centrifugal dewatering is conducted on the concentrated liquid to obtain solid salt for recycling, and the produced water is reused. The oil refining catalyst wastewater zero-discharging treatment method is obvious in treatment effect and low in operation cost.

The invention discloses a water coagulation treatment method. The method comprises that: a coagulating agent is adopted to carry out coagulation treatment on water; and in the process of water coagulation treatment, a catalyst and an oxidant are thrown into the water. Through the addition of the catalyst and the oxidant in the process of the water coagulation treatment, the catalyst forms a solid-liquid reaction interface in the water; and the oxidant undergoes rapid oxidation reaction on the interface and oxides organisms to destroy the protective function of the organisms on suspended particles. The adsorptive action of the catalyst can combine with colloid particles in the water to form a microfloc nucleus so as to increase the concentration of particles in the water and be favorable for the formation and growth of floc in the coagulation reaction.

The invention relates to the improvement of a separation inclined pipe and a clarifying / precipitating device for clarifying and precipitating in a water treatment process, which is characterized in that parallel opposite wave plates which form an inclined pipe are oppositely and adjacently arranged at intervals; the adjacent space is provided with separated inclined plate strips which are arranged up and down at intervals; and the water inlet and outlet of the inclined pipe and the separated inclined plate strips are parallel or approximately parallel. Compared with the mud-water separation of an incongruous flow of the existing inclined plate and inclined pipe, the inclined pipe provided by the invention has higher surface load, higher mud-water separation efficiency and better mud-waterseparation effect and can effectively separate tiny suspended matters which can not be precipitated and separated originally, the quality of the separated water is better, the muddy matters are removed completely, and the treatment is more stable. The clarifying / precipitating device provided by the invention can enhance the efficiency by above 30% and can obviously improve the water quality. The invention adopts grid turbulence flocculation, can be beneficial to improvement of the quality of the clarified / precipitated water and can realize basically powerless flocculation. The separation inclined pipe and the clarifying / precipitating device provided by the invention can be used for clarifying in various water supply treatments and recycled water treatments and for precipitating in sewage treatment.

Provided is an inclined plate sedimentation tank. The inclined plate sedimentation tank comprises a sedimentation tank body and a plurality of inclined plates arranged to be parallel to each other at intervals in the sedimentation tank body. A fixing table is arranged in the inner sides of the sedimentation tank body. A frame is arranged on the fixing table. Two ends of each of the inclined plates are respectively hinged with two sides of the frame along the width direction. The top of each inclined plate is connected with a pulling rod. The extension direction of the pulling rod is the arrangement direction of the inclined plates. Vibration devices are arranged on the frame. The inclined plate sedimentation tank can avoid obstruction of the inclined plates when the sedimentation efficiency is raised.

The invention provides a method for separating enriched palladium from a waste Pd / Al2O3 catalyst chloride leaching solution. The method mainly comprises the steps of adjusting pH in advance, performing sulfide precipitation, and acidizing to remove impurities. A waste Pd / Al2O3 catalyst is chloridized and dissolved so as to obtain a leaching solution, firstly, a NaOH solution is added, so that Al<3+> in the leaching solution exists in forms of meta-aluminic acid radical ions, other alkali metal ions are precipitated in the form of hydroxide, then a Na2S solution is added, so that [PdCl4]<2> in the leaching solution is converted into PdS, and finally, hydrochloric acid is added, so that the hydroxide is dissolved, and palladium sulfide is effectively separated from alkali metal impurities. The palladium recovery rate reaches 100%, and the purity is more than 95%. The method has the advantages of good selectivity, simplicity in operation, high enrichment efficiency, economy and environmental friendliness, toxic gas H2S cannot be generated, additionally, aluminum and palladium can be recycled, and the method is suitable for mass production.

The invention discloses a method for quickly extracting fungal DNA for PCR amplification, which comprises the steps of: (1) culturing fungi to obtain fungal mycelia; (2) placing the fungal myceliua into a centrifugal tube filled with a lysate; (3) alternately freezing and thawing the centrifugal tube; and (4) centrifuging the thawed fungal mycelia, taking a supernatant, adding 95 percent ethanol into the supernatant, mixing the mixture evenly, quickly freezing the mixture by liquid nitrogen, centrifuging the mixture, removing a supernatant, and air-drying a precipitate to obtain the fungal DNA. The method has simple operation, is time-saving and labor-saving, reduces the loss of the fungal DNA during the grinding, does not need phenol and chloroform for extraction, and avoids the contact of a toxic reagent. The DNA extracted by the method has good integrity, high purity and high yield, can be directly used for a PCR amplification reaction, and can efficiently amplify a target product for cloning and sequencing. The method improves the extraction efficiency of the fungal DNA, reduces the cost for the extraction of the fungal DNA, and can effectively improve the molecular identification and detection efficiency of the fungi.

The invention relates to a sulfate reducing bacterium capable of achieving heavy metal settling and an application of the sulfate reducing bacterium. The sulfate reducing bacterium is separated from a paddy field. The sulfate reducing bacterium is collected in China Center for Type Culture Collection on April 19, 2015, with a collection number of CCTCC NO (China Center for Type Culture Collection number): M2015243 and a name of the sulfate reducing bacterium SRB-L (desulfovibrio sp. SRB-L). The bacterium has good heavy metal settleability and can be used for removing heavy metal ions from soil and waste water.

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 belongs to the technical field of sewage treatment and in particular relates to a precipitant solution spraying device for precipitating sewage of a swimming pool. Aiming at solving the technical problems, the invention provides the precipitant solution spraying device for precipitating the sewage of the swimming pool, which has the capabilities of reducing the labor intensity of workers, improving the precipitation efficiency of impurities and saving raw materials of a precipitant. In order to solve the technical problems, the precipitant solution spraying device for precipitating the sewage of the swimming pool, provided by the invention, comprises a base and the like; the right side of the top of the base is connected with a liquid containing box through a bolt; a spraying device is arranged at the front side of the liquid containing box; the top of the base at the right side of the liquid containing box is connected with an inclined rod through a bolt; the top of the inclined rod is connected with a sliding sleeve through a bolt; a spraying pipe is arranged in the sliding sleeve. According to the precipitant solution spraying device for precipitating the sewage of the swimming pool, a precipitant solution in the liquid containing box is sprayed into the spraying pipe through the spraying device and the precipitant solution is sprayed out from the spraying pipe through a liquid outlet hole and then enters water of the swimming pool.

The invention discloses a sludge sedimentation tank. The sludge sedimentation tank comprises a tank body and a water inlet and a water outlet which are formed in the two ends of the tank body, whereinmultiple sludge hoppers are arranged on the bottom of the tank body in a direction from the water inlet to the water outlet in an array mode, at least one flow baffle is arranged between the adjacentsludge hoppers, and sewage flowing openings are formed in the top ends or the bottom ends of the flow baffles. In the sludge sedimentation tank, by arranging the flow baffles, the flow rate of sewagecan be reduced, so that the sedimentation efficiency is greatly improved; the sludge hoppers are used for collecting the sludge in front of the flow baffles.

The invention relates to a method and a device for treating oil and gas field fracturing flow-back fluid by adopting ceramic membrane, and belongs to the technical field of water treatment. The method comprises the following steps: first, conducting gel breaking flocculation treatment on the gel-containing fracturing flow-back fluid; carrying out an ozonation process to reduce the viscosity of the fracturing flow-back fluid; carrying out fine filtration according to a ceramic membrane filter technology. The method has the advantages that not only can the flux of the ceramic membrane and the operational stability be improved, but also the treating time and the technological process are shortened, and the treating cost of the fracturing flow-back fluid is reduced.

The invention provides an integrated system and process for treating domestic sewage of villages and towns and belongs to the technical field of environment protection and sewage treatment. Main body parts of the system comprise four space parts including an adjusting tank, an anaerobic pre-reaction tank, a main biochemical reaction tank and an inclined tube sedimentation basin; the four parts are combined and integrated into a process unit by adopting a separation plate; other parts of the system comprise a grid, a disinfection device and a PAP metering device. The adjusting tank is used for adjusting the water quantity of input water and homogenizing the water quality. Modified suspension packing is added into the anaerobic pre-reaction tank and the anti-impact load of the process is enhanced, so that the pre-reaction treatment effect is better. The main biochemical reaction tank has a simple structure and physical regions are not formed in the tank; a water input and water distribution pipe and a disc type micro-pore aeration device are crossly distributed at the bottom of the tank and an overflowing weir is used for discharging the water, so that the treatment efficiency on pollutants is high; and a sludge reflowing system is not arranged and a process is flexible to operate. The inclined tube sedimentation basin adopts a polyvinyl chloride plastic hexagonal inclined pipe, so that the occupied space is small, hydropower staying time is short and the sedimentation efficiency of the pollutants is high.

The invention discloses an efficient sewage sedimentation tank, comprising a sedimentation tank body; pi-shaped fixed bases are fixed on the side wall of the sedimentation tank body in an inserting sleeving way; T-shaped guide rail grooves are respectively formed in the two side walls of each fixed base; a vertical T-shaped guide rail is inserted and connected in the each guide rail groove of thecorresponding fixed base; a connecting block is fixed between the two T-shaped guide rails on each fixed base; the connecting blocks are distributed at the upper sides of the fixed bases; support lugsare respectively molded at the bottom ends of the T-shaped guide rails arranged at the inner side of the sedimentation tank body; a horizontal porous plate is inserted and connected in the sedimentation tank body; a plurality of hinge joint seats are molded at one side of the porous plate; the hinge joint seats arranged on the porous plate are hinged with the support lugs of the T-shaped guide rails by means of hinge joint shafts; a plurality of support seats are fixed on the porous plate; a horizontal first transmission shaft is hinged on the connecting blocks of the T-shaped guide rails; coiling wheels are fixed on the first transmission shaft in an inserting sleeve way; one ends of rope belts are fixed on the support seats, and the other ends of the rope belts are fixed on the coilingwheels; the two ends of the first transmission shaft are respectively and fixedly connected with a rotating shaft of a coiling motor by means of a coupling. The efficient sewage sedimentation tank canaccelerate the sedimentation speed, so that the sedimentation efficiency of the sedimentation tank is increased.