31 results about "Sedimentation" patented technology

The aqueous clay waste formed during a phosphate or other mineral recovery processes is flocculated in a well which is generally formed in a sedimentation lagoon, the supernatant is taken from the top of well and is recycled to the main flotation or other separation process (generally after running across sediment in the lagoon) and the thickened sediment which is formed in the well is pumped from the base of the well to one or more final lagoons where it is converted to a solid sediment by sedimentation and evaporation.

Treated water with good water quality which can be discharged or reused is obtained by efficiently removing SS, fluorine, cyanogen, selenium, ammonia, and COD components contained in coal gasification wastewater such as gas washing wastewater generated in a coal gasification step. A method of treating coal gasification wastewater comprising steps (1) to (4), wherein the step (1) is performed prior to the step (2): (1) a fluorine removal step in which fluorine is removed by coagulation sedimentation; (2) a cyanogen decomposition step in which cyanogen is decomposed by wet oxidation or thermal hydrolysis; (3) a selenium treatment step in which selenate ions are subjected to a reduction treatment with a metal reductant; and (4) a COD/ammonia removal step in which COD and/or ammonia are/is removed.

The invention discloses a scale advanced treatment method for livestock and poultry farming waste water. The method of the invention comprises the following steps: (1) adding acid to the livestock and poultry farming waste water after biological treatment, and regulating the pH value of the waste water to be less than or equal to 5.0; (2) adding H2O2 and soluble ferrite to the waste water to carry out oxidation reaction, wherein the mol ratio of the H2O2 to the Fe<2+> in the soluble ferrite is between 1:1 to 2:1; and (3) after carrying out reaction for not less than 10 minutes, adding alkali to reaction liquid, regulating the pH of the reaction liquid to be greater than or equal to 6.0, carrying out flocculating and depositing, and then discharging deposit and waste water according with the discharge standard. By controlling the pH value of the reaction system, the adding proportion of the H2O2 to the FeSO4, and the running time, the invention achieves the treatment effect and optimization of energy consumption. The process effectively oxidizes and decomposes the trace organic pollutants (incretion interferents, antibiotics and the like), simultaneously removes various heavy metals and phosphorus by coagulating sedimentation, inactivates pathogenic bacteria in the waste water, and realizes integrated high-efficiency reinforcement treatment of the livestock and poultry farming waste water.

The invention discloses a hospital sewage treatment system which comprises a grating well, a pre-disinfecting tank, a septic tank, a pre-aeration adjusting tank, an anoxic tank, a bio-contact oxidation tank, a vertical flow sedimentation tank, a quantitative tank, a purifier, a contact disinfecting tank and a dechlorination tank which are arranged in the sewage flow direction and communicate with each other through pipelines. The grating well communicates with a hospital sewage drainpipe. Processed hospital sewage passes through the dechlorination tank and is then discharged. The system provided by the invention has high degree of automation, is convenient to manage, and is adopted to reduce operating personnel. In comparison with a traditional sewage station management system, the system provided by the invention has the following advantages: energy is saved; operation time is reduced; work schedule of personnel and labor intensity are decreased; the purifying effect is good; and emission targets after processing reaches the national emission standard.

The invention relates to a preparation method for the composite flocculant of printing and dyeing wastewater mainly treating reactive dyes, comprising the following steps: (1) reactive clay mine, flocculant and fixing agent Y are weighted according to the mass ratio of 10-50:10:0-2 and then thrown and added into the printing and dyeing wastewater; and (2) the throwing and adding sequence is firstly adding the clay mine and then the flocculant, wherein, the flocculant is thrown and added in a form of powder or liquid shape, finally, the liquid-shaped fixing agent Y with the concentration of 2g/L is added, with the rapid stirring 250r/min for 1min of the time, the slow stirring 80-100r/min for 13-8min of the time and 8min of the standing. The composite flocculant improves the printing and dyeing wastewater decolorization rate and the COD removal efficiency, simultaneously enhances the sedimentation performance and the filtration rate, and also reduces the sediment; especially, the removal rate for the reactive dyes waste liquid COD reaches over 60 percent; and the preparation process is simple, the using effect is good, and the pollution to the environment is reduced when the cost is lowered.

The invention provides a transformer substation monitoring device, method and system and relates to the technical field of electric power. The device comprises a sedimentation acquisition unit, a horizontal displacement acquisition unit, a data processor and a display device, wherein the sedimentation acquisition unit is arranged at an underground position of a monitoring point and is used for acquiring sedimentation data of the monitoring point; the horizontal displacement acquisition unit is arranged at a ground surface position of the monitoring point and is used for acquiring horizontal displacement data of the monitoring point; the data processor is used for obtaining the sedimentation data and the horizontal displacement data and displaying the sedimentation data and the horizontal displacement data through the display device, and is also used for sending the sedimentation data and the horizontal displacement data to a remote terminal through a wireless manner so as to carry out analysis and early warning on the sedimentation data and the horizontal displacement data by the remote terminal. According to the transformer substation monitoring device, method and system, the sedimentation data and the horizontal displacement data of a transformer substation foundation can be acquired in real time and the analysis and early warning on the data are carried out by the remote terminal, and hidden dangers can be found in time so that operation safety of an electric power system is ensured.

The invention discloses a method for purifying aescin from a semen aesculi extract. The method can comprise the steps that (1) sedimentation is conducted through acetone, specifically, the semen aesculi extract is dissolved through 3-5 times amount of low mass molecule alcohol, the acetone of the equal volume is added in a suspended status, stewing and sedimentation are conducted at 15-20 DEG C, and yellowish-brown sediment on the lower layer is obtained, decompressed and concentrated to obtain an aescin extract; (2) purification is conducted through macroporous adsorption resin, specifically, the extract is completely dissolved through 1-2 times amount of pure water, adsorption is conducted through the macroporous adsorption resin AB-8 with the sample loading quantity being 5g of the extract per 100 ml of the resin and the flow rate being 0.1-0.3 BV/h, elution is conducted through ethyl alcohol with the elution speed controlled to be 0.5-1 BV/h, and aescin flow is collected; and (3) washing and decoloration are conducted through acetone, specifically, the aescin flow is decompressed and concentrated, and obtained power is washed and decolored through the acetone, and subjected to vacuum drying to obtain an off-white aescin product. By adoption of the method, the aescin can be purified from the semen aesculi extract, and the method has the advantages that technological operation is easy and convenient, and the method is efficient and low in energy consumption, and meets production requirements of large-scale industrial extraction and purification of the aescin.

The invention discloses a method for treating coking wastewater, and relates to the technical field of coking wastewater treatment. A coking wastewater treatment system is adopted for treating, the wastewater treated by the coking biochemical system is pumped into a water distributor, the wastewater is injected into the bottom of an inclined-tube sedimentation tank by the water distributor, the wastewater is blocked by an inclined-tube packing zone in the rising process, the wastewater is discharged from the top of the inclined-tube sedimentation tank after part of suspended matters are removed to enter an upper column liquid tank, the wastewater is pumped to a shallow sand filter group by an upper column liquid pump and filtered and then enters a resin adsorption tower, the wastewater is adsorbed by resin and then the effluent flows into a tail water tank from the tower bottom. By adopting the method, the intercepting efficiency of chroma, COD and total cyanides is high, the yield of concentrated pollutants is low, the water quality stability of discharged tail water is good, the water quality and stability of the tail water are effectively improved, and the water quantity is reduced significantly; and the method has the advantages of short flow, low space occupation, appropriate investment, low operation cost and the like.

The invention discloses a discharge treatment system for the produced water of a polymer flooding oilfield, and belongs to biochemical discharge treatment of tertiary oil recovery polymer-containing sewage of the oilfield. Sulfate reducing bacteria having polyacrylamide degradation ability are cultured and screened; the produced water of the polymer flooding oilfield is treated though a combined process comprising a sulfate reducing bacteria pretreatment unit, a hydrolytic acidification unit and a contact oxidation unit; the sulfate reducing bacteria pretreatment unit is used for partially degrading and removing residual HPAM (Hydrolyzed Polyacryamide) out of the sewage at first, so that the load of the subsequent treatment units is reduced; a low-intensity ultrasonic generator is used for increasing the activity of a microbial enzyme by performing irradiation treatment on the activated sludge so that the capacity of decomposition of microorganisms on organic matters is improved; several techniques are combined to achieve the synergistic effect for improving the overall treatment capacity and the applicability of the process to the produced water of the polymer flooding oilfield. The discharge treatment system provided by the invention is simple in process and easy to implement, and is expected to realize standard discharge of the produced water of the polymer flooding oilfield in combination with auxiliary units such as a sedimentation tank.

The invention discloses a nondestructive detection system for the state of a crude oil tank bottom plate corrosion product. The system comprises an electrochemical impedance spectrum acquisition subsystem (1), an acoustic emission burst information acquisition subsystem (2) and a crude oil tank sedimentation water bottom plate corrosion product state judgment subsystem (3). The generation, dissolution and fracture situations of a corrosion product film on a bottom plate in a crude oil tank under the corrosion environment of sedimentation water are obtained by analyzing electrochemical impedance spectra and acoustic emission energy spectra under the acquisition time, so that the stress corrosion situation and the damage situation of the bottom plate in the crude oil tank can be judged, and the loss of equipment and economy due to stress corrosion is reduced.

The invention provides a different-diameter porous separation membrane. The different-diameter porous separation membrane comprises a flat sheet membrane with two parallel separation layers. A plurality of different-diameter support pores are formed in the middles of the separation layers of the two parallel separation layers. The different-diameter support pores are arranged sequentially to form pore passages. The different-diameter porous separation membrane is of a rectangular structure. The inner pore passages in the middles of the two parallel separation layers form corrugations. The different-diameter support pores are produced in the middles of the two parallel separation layers through spinning plates. The different-diameter porous separation membrane has the advantages that to overcome the defects of small filling area and poor anti-pollution capability of flat sheet membranes, the flat sheet membrane with the two separation layers is formed through the parallel separation layers, and filling area of the flat sheet membrane is increased; the different-diameter support pores are formed in the middles of the two parallel separation layers, the middle pore passages play a support role, flow-out of outlet water is facilitated, turbulences of fluids are increased, sedimentation of particles is reduced, and accordingly, membrane contamination is reduced. Two problems in filling area and anti-pollution capability of flat sheet membrane components are solved sufficiently.

The invention discloses an integrated sewage treatment device, comprising a sludge discharge pipe, a water inlet, an anoxic tank, a first flow passage, an anaerobic tank, a second flow passage, an aerobic tank, a water distribution pipe, a sedimentation tank and a central cylinder; the water inlet is located on a wall surface of the anoxic tank; the anaerobic tank is located outside the anoxic tank, the first flow passage is located on a wall surface between the anaerobic tank and the anoxic tank, and the first flow passage communicates the anaerobic tank and the anoxic tank; the aerobic tankis located outside the sedimentation tank, the aerobic tank is located above the anaerobic tank, the second flow passage is located on a wall surface between the aerobic tank and the anaerobic tank, and the second flow passage communicates the aerobic tank and the anaerobic tank; the sedimentation tank is located above the anoxic tank, the central cylinder is fixedly connected into the sedimentation tank, and the central cylinder is communicated with the aerobic tank through the water distribution pipe; the sludge discharge pipe is connected with the bottom of the sedimentation tank. The device has the effects of compact structure, small floor space, less running auxiliary equipment, uniform flow state and no dead angle of sedimentation.

The invention discloses a chip removal filter device for graphite production, which comprises an annular water pipe and a graphite production and processing box. A sedimentation box is arranged under the graphite production and processing box, and a collection box is arranged on one side of the sedimentation box. A water storage tank is provided on the other side of the tank, and a stainless steel sludge pump is provided between the collection tank and the sedimentation tank. The head realizes the full coverage of the spray water in the graphite production and processing box, and effectively collects the dust and chips generated during graphite processing. The box is connected with the water delivery pipe at the outlet of the spray water lifting pump through the recoil pipe and the tee pipe, and the stainless steel filter screen inside the filter box is cleaned by the backflow water to ensure the filtration efficiency of the stainless steel filter screen.

The invention discloses a sludge-containing wastewater treatment method which comprises the following steps: (1) firstly removing large suspended solids in wastewater; (2) lifting the wastewater into an aerated grit chamber, and removing sand, coal cinder and other particles with high specific gravity in the sewage; (3) enabling the sewage to enter a circular primary sedimentation tank to be pre-treated, and removing fine suspended organic matters; (4) enabling the water to enter an aeration tank, enabling the water to enter a circular secondary sedimentation tank to perform mud-water separation, returning partial activated sludge to the aeration tank, disinfecting the effluent in a chlorination contact tank, and discharging the water into a water body through a Parshall flume; (5) mixing the sludge in the primary sedimentation tank, the aeration tank and the secondary sedimentation tank, and enabling the sludge to enter a sludge thickener; and (6) returning the supernatant in the sludge thickener to the primary sedimentation tank to be treated again, treating the sludge containing organic matters by a sludge digestion tank, dewatering the digested sludge by a belt filter press, airing the sludge, and outward transporting the sludge. The treatment method disclosed by the invention has the beneficial effects that the sludge separation rate reaches 80% or higher, and the wastewater emission is higher than the emission standard.

The invention discloses a small boat-form sedimentation tank device for sewage treatment. The device comprises a boat-form sedimentation tank main body, a sealing cover is installed on the top of theboat-form sedimentation tank main body, a treatment groove is formed in the interior of the boat-form sedimentation tank main body, water inlet pipes are installed on the two sides of the top of the boat-form sedimentation tank main body, water absorbing pipes are installed on the two sides of the boat-form sedimentation tank main body, and a sediment waste residue collecting groove is formed in the bottom of the boat-form sedimentation tank main body. The device is provided with the boat-form sedimentation tank main body, suspension air bags are installed on the two sides of the bottom of theboat-form sedimentation tank main body respectively, through the suspension air bags, the boat-form sedimentation tank main body can be controlled to suspend in a sewage tank, the water absorbing pipes and the water inlet pipes which are communicated with one another are installed on the outer and inner sides of the boat-form sedimentation tank main body respectively, and through the water absorbing pipes and the water inlet pipes, sewage can be subjected to circulating treatment in the boat-form sedimentation tank main body, so that sewage treatment is greatly facilitated.

The invention discloses a method for making an inorganic polymer water purifying agent. The raw materials include pyrite slag, diatomaceous earth, sulfuric acid, hydrochloric acid, oxidizing agent and catalyst. The invention realizes the effective utilization of pyrite slag , turn waste into wealth, solve the problem that pyrite slag is difficult to deal with, and when the water purifying agent is used for water purification, the alum flowers formed during the coagulation process are large, the sedimentation is fast, the sludge dewatering performance is good, and there is no secondary Pollution, has a good purification effect.

An air floatation sewage treatment device based on superoxide nano micro-bubbles comprises a wastewater tank, a dosing storage tank and an air floatation tank, the wastewater tank and the dosing storage tank are communicated with the air floatation tank through a mixing pipeline, and a water inlet pump and a nano microbubble generating device are further arranged on the mixing pipeline; the interior of the air floatation tank is divided into a release area, a sedimentation area and a water outlet area, the release area and the sedimentation area are separated by a first flow guide plate, the sedimentation area and the water outlet area are separated through a second flow guide plate, and a water outlet is formed in the bottom of the water outlet area; the sedimentation area is internally further provided with a slag discharging pond which is used for separating the sedimentation area from the upper part of the sedimentation area, the top of the sedimentation area is provided with a slag floating machine used for scraping floating slag at the upper part of the sedimentation area into the slag discharging pond, a slag discharging hole is formed in the bottom of the slag discharging pond, and a plurality of second sludge discharging hoppers which are sequentially arranged are arranged at the bottom of the sedimentation area. The device is reasonable in design, the generated micro-bubbles are small in diameter and long in retention time in water, particles in water can be effectively adhered and separated, and the sewage treatment effect is good.

The invention discloses a sewage treatment agent. The sewage treatment agent comprises the following components: 10-20 parts of magnetic iron powder, 32-48 parts of polyferric chloride, 10-15 parts ofpolyacrylamide, 18-30 parts of poly aluminum ferric silicate, 24-48 parts of zinc sulfate, 25-40 parts of bentonite and 10-20 parts of activated carbon. The sewage treatment agent provided by the invention can realize sewage treatment by flocculation, magnetization adsorption and physical adsorption, and has a good treatment effect; the magnetic iron powder can effectively attract charged microparticles in the sewage treatment agent and make the charged microparticles agglomerated, the polyacrylamide and the poly aluminum ferric silicate are also used, so that the sewage treatment agent can achieve the purpose of rapid sedimentation, and improve the treatment efficiency; and at the same time, the sewage treatment agent can remove composite pollutants such as organic matter and heavy metals commonly found in water sources, reduce a color and turbidity of water, and further improve the treatment effect.

The invention discloses a modular type movable microorganism expanding culture device. The modular type movable microorganism expanding culture device comprises an oil removal tank, a primary biological expanding culture tank, a secondary biological expanding culture tank, a third biological expanding culture tank, a high-efficiency sedimentation tank and a water outlet tank, wherein the oil removal tank is provided with an oil overflow opening; the primary biological expanding culture tank, the secondary biological expanding culture tank, and the third biological expanding culture tank are sequentially connected with the back part of the oil removal tank, and are of the same internal structure; the high-efficiency sedimentation tank is connected with the back part of the third biological expanding culture tank; the water outlet tank is connected with the back part of the high-efficiency sedimentation tank; a plurality of oilproof anti-blockage aeration heads are arranged at the bottom part of the primary biological expanding culture tank, and are mutually communicated; a filler bracket is arranged above the aeration heads; a dense type biological filler is filled into the filler bracket; an oil isolating baffle plate is arranged above the filler bracket; an adjustable water collecting weir and an oil draining inclined plate are arranged at the inner side of the high-efficiency sedimentation tank; the adjustable water collecting weir is arranged above the oil draining inclined plate.

The invention relates to a wastewater treatment device. The invention provides a novel multimode A<2>/O oxidation ditch. The novel multimode A<2>/O oxidation ditch comprises a coarse screen, a water distribution well, a fine screen and an aeration grit chamber, an A<2>/O oxidation ditch, a secondary sedimentation tank, a contact disinfecting tank as well as a high level well, wherein the coarse screen, the water distribution well, the fine screen and the aeration grit chamber are connected with one another in sequence; the novel multimode A<2>/O oxidation ditch is characterized in that an efficient sedimentation basin is also arranged between the contact disinfecting tank and the high level well. According to the invention, the TP (Total Phosphorous) content in outlet water of a sewage treatment plant is effectively reduced and the TP in the outlet water of the sewage treatment plant is stable and reaches the standards.

The invention shows a method for patch-clamp experiments on cells or similar structures, where at least one cell is inserted into the lumen of a capillary and is positioned inside the capillary so, that a sufficiently tight seal with a resistance exceeding 1, preferably 10 GigaOhm develops between cell membrane and inner surface of the capillary. Along its length said capillary has at least at one position a smaller inner diameter than the outer diameter of said cell. Preferably the cell is inserted and positioned in the capillary by pressure, suction, sedimentation or centrifugation of a suspension or solution containing said cell. An apparatus for performing experiments using this method is described.

The invention relates to a biodiesel refining method which includes the steps: crushing micro-algae: leading harvested micro-algae into a crushing tank, crushing the micro-algae by ultrasonic waves, enabling algae solution to flow into a sedimentation tank by a water pump after the micro-algae is crushed, performing natural sedimentation to form an upper layer and a lower layer, and pumping algae pulp of the lower layer into a reaction tank; in-situ extracting: adding reactants and extraction agents into the reaction tank storing the algae pulp, heating to 70-80 DEG C, stirring all the time, and beginning to perform in-situ extraction; separating and purifying: pumping extracted liquid of the upper layer into a collection tank after extraction is finished, heating and simultaneously stirring, enabling evaporated extraction agents to enter a condenser, and collecting residue substance in the reaction tank to obtain biodiesel. The biodiesel refining method has the advantages that material loss is reduced, the method is simple in step and simple and convenient to operate, and yield rate is close to 100%.

The invention relates to a multifunctional three-stand column hydraulic automatic forming machine special for stone-free non-fired and non-steamed building blocks. The automatic forming machine comprises a three-stand column hydraulic machine which is provided with a cross beam and a base. The multifunctional three-stand column hydraulic automatic forming machine special for stone-free non-fired and non-steamed building blocks is characterized in that a center stand column is arranged between the cross beam and the base, the center stand column is provided with six mold feeding trays, six blank forming molds are placed in six-equally-divided square holes between the mold feeding trays, mold supporting devices are mounted below the two sides of the six-equally-divided square holes respectively, a movable mounting plate is mounted on the lower portion of the cross beam, two upper pressing heads are mounted on the lower portion of the movable mounting plate, the movable mounting plate is provided with three sets of mold lifting devices, the movable mounting plate is further provided with a mold loosening device, two lower pressing heads are fixed on the base, and the base is further provided with a mold floating reinforcing device. The multifunctional three-stand column hydraulic automatic forming machine special for stone-free non-fired and non-steamed building blocks has the advantages that stone cannot be added, only Yellow River sedimentation sand or fine granules which are formed by smashing building debris are used as a mixture of aggregate to be manufactured into non-fired and non-steamed wall bricks, so that materials and cost are saved, and the environment is protected.

The invention provides a building method of a concrete faced rockfill dam in a karst development region. Compared with a conventional dam foundation treatment mode, a mode of the method provided by the invention is characterized in that the dam foundation basic treatment of the mode comprises two types: riverbed section dam foundation treatment and left and right bank dam foundation treatment; fortwo kinds of foundation surfaces, exposed water-eroded groove inner surface soil, loose soil layers and boulder stones need to be cleanly cleared; undisturbed filling soil capable of being cleared inwater-eroded grooves is cleared; and for conditions that the water-eroded grooves are narrow, and filling clay is difficult to clear in a local region, 30cm of reverse filter materials are filled andbuilt on the surface, and compaction treatment is performed. Similar problems of karst development, wide spreading of water-eroded grooves and stalagmites and clints, concrete faced rockfill dam foundation construction treatment of a gryke development region are solved. An obvious treatment mode is provided for conditions of exposed water-eroded grooves, stalagmites and clints and the like of thedam foundation. The treatment mode has the advantages that the treatment effect of the dam foundation basic surface can be effectively ensured; and adverse influence caused by nonuniform sedimentation due to a dam foundation problem on an anti-seepage body and a dam body is avoided.