56results about How to "Shorten flocculation time" patented technology

The invention discloses an organic polymer heavy metal chelating flocculant as well as a preparation method and an application thereof. The organic polymer heavy metal chelating flocculant is prepared from the following raw materials in parts by weight: 100 parts of carboxymethyl starch, 5-20 parts of a crosslinking agent, 0.05-0.5 part of an initiator, 5-20 parts of acrylamide and 28-60 parts of carbon disulfide, wherein the crosslinking agent is adipic acid, phosphorus oxychloride or sodium trimetaphosphate. The organic polymer heavy metal chelating flocculant has the efficacies of both excellent heavy metal chelating precipitation and flocculation, has the advantages of rapidness in reaction speed, ideal effect of removing heavy metal ions, high treatment efficiency and the like, is low in dosage and cost and is capable of economically and efficiently treating sewage containing the heavy metal ions.

The invention relates to a method for treating acidic fluorine-containing waste water. The method comprises the following steps sequentially: (1) adding calcium-containing substance into the fluorine-containing waste water to be treated and adjusting the pH value of the waste water to be about 4.0 to 9.0; and (2) adding water-soluble gamma-polyglutamic acid serving as a biologic capturing agent into the mixture, fully stirring and standing the mixture, separating the supernatant and collecting the precipitated sludge after the mixture is precipitated and demixed, wherein the calcium-containing substance at least comprises one of calcium hydroxide, calcium oxide or calcium salt. The method overcomes the technical disadvantages in the prior art; the high molecular water-soluble gamma-polyglutamic acid with a molecular weight between 500,000 and 1,500,000 is used in the treatment of the acidic fluorine-containing waste water; and repeated experiments show that the fluorine removing effect is excellent and the treated waste water can meet the national first-class discharge standard; moreover, the method has the advantages of low treatment cost, high efficiency for the treatment process, environment friendliness and no secondary pollution.

The invention relates to a city watercourse drain outlet sewage treatment method. The method mainly comprise the steps of regulation, wherein sewage is introduced into a regulating reservoir for regulation; mixing with flocculant, wherein sewage in the regulating reservoir is led out to be mixed with flocculant; flocculent settling, wherein sewage mixed with flocculant is sequentially introduced into a baffle flocculation reaction tank and a settling tank for sewage flocculation and sludge precipitation separation; denitrification, wherein water discharged from the settling tank and part of water discharged from a nitration aerating filter are introduced into a denitrification filter for denitrification; aerobiotic nitration, wherein water discharged from the denitrification filter is introduced into a nitration aerating filter for nitration; filtration, wherein part of water discharged from the nitration aerating filter is introduced into a filtering device for filtration. The invention further provides a sewage treatment device adopting the method. The sewage treatment device comprises a regulating reservoir, a pipeline mixer, a baffle flocculation reaction tank, an oblique plate settling tank, a denitrification filter, a nitration aerating filter and a clear water pond which are connected in series, wherein a water outlet pipeline of the clear water pond is connected to a filter device.

The invention provides a method for preparing high-filling composite masterbatch through a semi-open type superheated steam spray-drying method, and relates to the field of preparation of high-filling composite rubber masterbatch. Modification treatment is conducted on inorganic filler through a modifying agent, the modified inorganic filler is ground and uniformly dispersed into a rubber emulsion, and then the technology of using a spray-drying technology to prepare the high-filling composite masterbatch is adopted. The technology comprises the steps that inorganic suspension liquid is prepared by adding water, the modifying agent is added for treatment, the fully-ground inorganic suspension liquid is added to the rubber emulsion and stirred to be uniform, spray drying is conducted under the condition without demulsification, and a powder or microbead-shaped composite masterbatch product is obtained. According to the method for preparing the high-filling composite masterbatch through the semi-open type superheated steam spray-drying method, the technology is simple, the rubber component is completely reserved, the problem of high-filling masterbatch is solved, no flocculant is added, pollution does not exist, the drying time is short, human factors are few, continuous production can be achieved, the product quality is stable, and industrialization is easy. By means of the nano composite masterbatch, the inorganic filler can be uniformly dispersed in a rubber matrix in a nano-scaled mode, and the nano composite masterbatch can be applied to the fields such as saloon car tires and engineering tread rubber.

The invention relates to the technical field of water processing, in particular to an integrated flocculent precipitating device, and belongs to the improvement of a water purifying device structure.The integrated flocculent precipitating device comprises a sewage and flocculant injecting device, a mud discharge device and a flocculation reaction and stirring device. The sewage and flocculant injecting device comprises a sewage and flocculant injecting pump and a water inlet pipe. The mud discharge device comprises a first motor, a mud discharge pipe and a mud scraper. The flocculation reaction and stirring device comprises a flocculation reaction barrel, a stirrer, an annular rectifying body and a second motor. The integrated flocculent precipitating device is simpler and more optimal, reasonable and compact in structure, stable in operation, low in operation cost, high in precipitating speed and high in work efficiency and remarkably has a good precipitating technological effect inpractice.

The invention provides a method for preparing small-fraction filling composite masterbatch through a semi-open type superheated steam spray-drying method. The technological method is used for preparing rubber nanocomposites through wet mixing and is less in energy consumption, safe and simple in technology. Rubber latex is selected and used for being mixed with filler slurry, a certain quantity of rubber auxiliary is added and stirred to be uniform, an obtained mixture is dried through a semi-open type superheated steam spray tower at a certain feed rate, the nano composite rubber masterbatch is prepared and collected and passes through a sieve plate, and blocks are formed after rolling is conducted. The method is simple in technology, complete in reaction, safe, free of hidden dangers, less in energy consumption and capable of reducing cost; human factors are few, continuous production can be achieved, the product quality is stable, industrial research is easy, and green and environmental protection is achieved. By means of the rubber masterbatch produced through the method, inorganic filler can be uniformly dispersed in a rubber matrix in a nano-scaled mode, and the rubber masterbatch can be applied to the fields such as saloon car tread rubber and engineering tread rubber.

The invention relates to an electromagnetic coagulation treatment method, and belongs to the field of coagulation treatment of water. According to the invention, a prepared coagulant solution is magnetized through an electromagnetic device and then added to a mixing reaction tank to be coagulated. The coagulant solution prepared at a certain concentration is magnetized by the electromagnetic device through a chemical dosing device and then added to mixing equipment to be mixed, and then a flocculation reaction, sedimentation and subsequent treatment are conducted on the coagulant solution. Under the circumstance that other conditions are the same, when being compared with the coagulation effect of an un-magnetized coagulant solution, the coagulation effect of the magnetized coagulant solution is that the best chemical dosing quantity can be reduced by 25 percent to 35 percent, the sludge moisture content is reduced by 3 percent to 5 percent, the sludge volume can be reduced by 15 percent to 40 percent; and meanwhile, the flocculating constituent forming speed is increased, the sludge sedimentation speed is increased, the flocculation time and the sedimentation time are shortened, the chemical dosing quantity and the sludge volume are greatly reduced, and subsequent sludge transportation and treatment costs are greatly reduced.

The invention discloses a micro-vortex flocculation suspension rapid filtration device, and the device comprises a tank body, wherein an inner cavity of the tank body is divided into a flocculation area, a sedimentation area, a filtration area and a water storage area, and the bottoms of the sedimentation area and the filtration area are communicated to form a sludge discharge area. The cavity of the flocculation area is divided into a plurality of vertical shafts distributed in a grid shape through partition plates, the vertical shafts are vertically staggered and sequentially communicated, so that sewage entering the first vertical shaft flows in a vertical staggered mode in the serial connection direction of the vertical shafts, and the last vertical shaft is communicated with the upper end of the sedimentation area. The vortex flocculation assemblies are arranged in at least part of the vertical shafts and are used for generating tiny vortexes in the penetrating water body, so that the flocculation time is shortened, and the flocculation effect is improved. According to the device disclosed by the invention, the process combination of flocculation, precipitation and filtration is adopted, the high-efficiency flocculation area is arranged at the front end of the device, and a coagulant is added to react with particulate matters in sewage, so that the pollutant removal effect of the precipitation area is greatly improved, the effluent quality is greatly improved, and the operation cycle of the filtration area is prolonged.

The invention discloses a mineral source humic acid and inorganic salt fertilizer complexed product, and a preparation method of the complexed product. The complexed product is prepared from the components by mass: 450-650 g/L of fertilizer effective compositions, 30-40 g/L mineral source humic acid effective compositions, 2-5 g/L medium element fertilizer effective compositions, 1-2 g/L of traceelement fertilizer effective compositions, 0.1-0.5 g/L beneficial element fertilizer effective compositions, and the balance of an ameliorant and a complexing agent. According to the mineral source humic acid and inorganic salt fertilizer complexed product, and the preparation method of the complexed product, the mineral source humic acid is modified, metal ions in inorganic salt and trace elements are complexed, thus the probability of flocculation during product dissolving is greatly decreased or the time of flocculation is delayed, and the industry problem that trickle irrigation cannot beconducted due to the fact that the mineral source humic acid is added into a product is solved; and meanwhile the complexing product can promote root system development of crops, the quality of the crops is improved, and the crop yield is increased very significant.

The invention provides industrial wastewater treatment method based on high-frequency intensified flocculation, and belongs to the technical field of sewage treatment. The treatment method mainly introduces a high-frequency intensified flocculation technique, and through high-frequency equipment, the problems that in the conventional chemical precipitation method for heavy metal ions in industrialwastewater, and floc and iron colloid in water drained from a Fenton oxidizing tower, lots of chemicals are added, and they are difficult to treat are solved. A small amount of PAC and PAM are added,then high-density and high-strength floc can be formed rapidly, the occupied area of a settling pond is reduced, load to follow-up wastewater advanced treatment and a recycling process is relieved, the running cost is reduced, and economic value is created for enterprises.

The invention discloses a sewage treatment system which comprises a sedimentation tank body, a mixing chamber is arranged on one side of the sedimentation tank body, a rotating mechanism is arranged in the sedimentation tank body, a medicine storage box is arranged in the mixing chamber, a medicine control assembly is arranged between the medicine storage box and the mixing chamber, and a mixing assembly is arranged on the inner side of the mixing chamber. The amount of sewage entering the mixing chamber is judged by detecting the flow through the flow detector, the content of impurities in the sewage is judged by detecting the density of flowing sewage through the infrared detection head, the amount of the sewage introduced into the mixing chamber and the content of the impurities are intelligently detected, and then chemicals can be added according to detected data. Then the flow control valve in the medicine control assembly controls the medicine outflow amount of the medicine storage box after the flow detector and the infrared detection head detect the sewage, so that the use of the medicine can be intelligently controlled, and the waste caused by excessive use of the medicine and the poor flocculation effect of the sewage caused by too little use are avoided.

The invention discloses an efficient flocculation and de-coloring device for treating printing and dyeing wastewater. The efficient flocculation and de-coloring device is composed of a wastewater regulation region, a flocculation medicine preparation region and a precipitation region, wherein the flocculation medicine preparation region is provided with a chemical flocculation medicine pot, a biological flocculation medicine pot and a jetting and blending device; the chemical flocculation medicine pot is communicated with a sewage water distribution pipe through a chemical flocculation medicine feeding pipe; the biological flocculation medicine pot is communicated with the sewage water distribution pipe through a biological flocculation medicine feeding pipe; sewage is conveyed into the sewage water distribution pipe through a submersible sewage pump and a sewage feeding pipe; after the sewage is mixed with a chemical flocculation medicine and/or a biological flocculation medicine, a mixture is conveyed into the jetting and blending device; the jetting and blending device is arranged at the upper part of the precipitation region; the precipitation region is provided with a clean water chamber, a tubular filling region and a sludge chamber, which are arranged from top to bottom; a mixed sewage discharging pipe is arranged at the bottom of the clean water chamber; a sludge discharging hole is formed in the bottom of the sludge chamber. According to the efficient flocculation and de-coloring device disclosed by the invention, flocculation agent mixed reaction is carried out through the flocculation medicine preparation region, the solvation and flocculation effect is improved and the flocculation time is shortened; a hexagonal honeycomb inclined tube assembly is arranged so that the precipitation effect is improved.

The invention discloses a grid stirring flocculation reaction device. The grid stirring flocculation reaction device is composed of a plurality of vertical shafts via series connection; the tops of the vertical shafts are provided with a cover plate; the straight groove of every 1 to 3 rows of the vertical shafts is provided with a stirring machine and a plurality of layers of a grid filling material; each stirring machine is composed of a stirring motor and stirring blades; the stirring motors are arranged on the corridor-type cover plate arranged on the tops of the vertical shafts; the grid filling material is penetrated by stirring shafts; the stirring blades are connected with the stirring motors via the stirring shafts. The grid stirring flocculation reaction device is low in head loss and excellent in effects; effective energy consumption ratio is increased, so that needed flocculation time is shortened, and pond volume is reduced; the grid stirring flocculation reaction device is simple in structure; management, installation, and maintenance are convenient; impact resistance is excellent; water flow conditions are improved greatly; pond bottom sludge deposition is not easily caused; growth of algae on grids, and blocking of grid meshes are not easily caused because of continuous stirring.

The invention relates to the technical field of resource environment-friendly recovery, and discloses a deplating process for an ABS plastic surface plating layer. The deplating process includes the following steps of S1, cleaning plating layer plastic, wherein the plating layer plastic is put into isopropyl alcohol to be stirred and cleaned and is then thoroughly spray-washed with deionized waterand dried; S2, performing dissolving and leaching, wherein the cleaned plating layer plastic is completely immersed in deplating liquid to be evenly stirred, then a negative electrode plate and a positive electrode plate are inserted into the deplating liquid and switched on with an alternating current, and deplating is performed for 1-2 h under ultrasonic stirring; and S3, taking out a deplatedplastic piece to be rinsed with clear water and dried so as to complete deplating of the metal plating layer plastic. By means of the deplating process, the deplating procedure of the ABS plastic surface plating layer can be simplified, the time of the deplating process can be shortened, and efficiency is higher.

The invention discloses a method for selectively settling printing and dyeing sewage. The method comprises the following steps of: putting the printing and dyeing sewage into reactor, adding 5 percent of aluminum potassium sulfate, 3 percent of ferrous sulfate, 0.2 percent of cationic polyacrylamide, 2 percent of chitin and 2 percent of palygorskite powder into the reactor, adjusting the pH to between 7.7 and 8.0 and settling the mixture for 3 hours, wherein the removal rate of COD in straw pulp reaches over 95 percent. Compared with the traditional process, the new method provided by the invention for settling the printing and dyeing sewage has the advantages of shorter flocculation reaction time, higher COD removal rate, higher settling speed of the printing and dyeing sewage and better decolorizing effect.