70results about "Water/sewage treatment by sorption" patented technology

The invention discloses a rapid treatment method for a fracturing flowback fluid. The rapid treatment method comprises: (1) pumping a fracturing flowback fluid into an electron beam irradiation chamber, and staying for 20-120 s in the electron beam irradiation chamber; (2) adding a coagulant and a flocculant into the sewage treated by the electron beam irradiation chamber, and clarifying in a flocculation precipitation pool; (3) feeding the water treated by the flocculation precipitation a precision filtration pool, and carrying out fine filtration; and (4) collecting the water filtered by theprecision filtration pool in a clear water pool. According to the present invention, the gel breaking stage uses physical gel breaking so as to achieve clean gel breaking and greatly reduce the sideeffects of external agents, such that the reuse quality of the fracturing flowback fluid is good, and the fracturing flowback fluid is safe; the gel breaking time is shortened from 5-120 min to 20-120s so as to greatly improve the gel breaking speed; and compared with the traditional chemical gel breaking method and the biological gel breaking method, the method of the present invention simplifyfeeding equipment and other supporting equipment, reduces the occupation area, and reduces the complexity of manual operation.

There are provided a chemical treatment cartridge capable of executing various extraction processes with ease and a method of using the same. There are formed recesses, each in a predetermined shape, in the back surface of an elastic member. The recesses create empty spaces between the cartridge substrate and the elastic member, thereby making up a well for receiving a sample, a well for pre-removing unnecessary moisture, a well for accommodating the sample at the time of distillation, a well for storing impurities therein, a well for taking out an object constituent, a flow path interconnecting the side surface of the cartridge and the well, a flow path interconnecting the well and the well, a flow path interconnecting the well and the well, a flow path interconnecting the well and the well and a flow path interconnecting the well and the well.

The invention belongs to the technical field of adsorbing agents and relates to a method for preparing a carbon adsorbing material used for efficiently removing harmful ions from waste water. The method comprises the following step: on the basis of taking the soluble saccharide or furfural as a carbon source and the amino acid or compound containing sulfydryl, carboxyl or amino group as an additive, performing the hydro-thermal reaction on the carbon source and the additive at 160-220 DEG C, thereby generating the carbon solid adsorbing material. The adsorbing material can be used for processing heavy metal ions or transition metal ions in industrial effluent and domestic sewage and the processing effect is excellent. The method has the advantages that the soluble saccharide or furfural is used as a raw material for preparing the carbon solid adsorbing material, the cost of the raw material is low, the preparation process is simple, the solid adsorbing material is synthesized through one step of hydro-thermal reaction, the reaction condition is mild and controllable, and the solid adsorbing material prepared by using the method has excellent stability and contains a large amount of surface groups. The content of the surface groups can be controlled within a large scope without changing the reaction condition. The surface groups have strong interaction with the metal ions, such as sulfydryl and mercury ions, so that the carbon adsorbing material can be used for efficiently removing the harmful ions.

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.

Various embodiments of the present invention are directed to systems and methods for packing chromatography columns. In one described embodiment of the present invention, a compressible resin is combined with a relatively high-viscosity packing solution to form a resin slurry for packing within a chromatography-column tube. In an alternative embodiment of the present invention, a relatively high-viscosity column-compression solution is used to compress a chromatography column initially packed with a dilute aqueous solution.

The invention discloses a method for preparing an absorbing material by using lakebed sludge. According to the method, the absorbing material can be prepared by the following steps of adding bagasse and red soil into solid waste of the lakebed sludge and coal ash which serve as raw materials, and then drying, screening, carbonizing, calcining and drying. The method is simple, easy to operate and wide in application rang. Laboratory tests prove that the absorbing material can remove heavy metal in a water body effectively and can adsorb common dyes well.

A nano-class magnetic particle-palygorskite composition, which can be magnetically controlled and used for cleaning raw materials, water, air, sewage, etc and preparing target medicines, is composed of palygorskite crystals and magnetic nanoparticles carried by said palygorskite crystal. It is prepared from palygorskite clay through suspending in water, adding Fe salt solution, hydrolytic reaction, dewatering, washing, and reductive calcining.

The invention provides a method for removing phenol-based substances from water by using an iron-sulfur supported multi-walled carbon nano-tube reinforced persulfate, and relates to a water treatment method. A purpose of the present invention is to solve the technical defects of high cost, poor removal effect and the like of the existing method for removing phenol-based substances from water. The method comprises: 1, mixing a persulfate and pre-treated water; 2, preparing iron-sulfur supported dual-phase composite multi-walled carbon nano-tubes; 3, pouring the iron-sulfur supported dual-phase composite multi-walled carbon nano-tubes; and 4, filtering the treated water so as to complete the method. With the method of the present invention, the removal rate of the phenol-based substances in the water can achieve 87-98%, and the residual phenol-based substance in the water can be removed.

A water disinfection delivery treatment system first filters the supply by a particle and then a carbon filter. The partially treated flow is split in two and a first part passes through a first cutoff valve and is fed into a disinfection (iodine) chamber, filter or feeder via a flow restricter. The chamber output passes through a second solenoid driven cutoff valve. The second part is fed to a third cutoff valve and this valve's output is summed with the second valve's output and then fed into a holding tank. The tank retain's a volume such that the water remains therein for at least a period sufficient to permit a minimum 3 log reduction of pathogenic microbes. A final carbon filter is downstream of the tank as is a meter and dispenser. A method is also provided for delivering potable drinking water.

The invention discloses a resin-based nano-lanthanum material and a preparation method and application thereof, and belongs to the field of environmentally functional materials. The preparation methodincludes the following steps: 1) dissolving lanthanum chloride heptahydrate and concentrated hydrochloric acid in alcohol, performing mixing, adding a resin polymer, and performing stirring at room temperature; 2) filtering the resin after completion of stirring, and performing drying; 3) adding the resin to a precipitant solution, and performing stirring at room temperature so as to filter out the resin; and 4) washing the product by using water until neutrality, adding a NaCl solution, performing stirring, filtering out the resin, and performing drying so as to obtain the resin-based nano-lanthanum material. Lanthanum is mixed with hydrochloric acid so as to make lanthanum and chloride ions form complex anions, lanthanum in the form of complex anions in alcohol is uniformly adsorbed into anion exchange resin pore channels, then the nano-lanthanum compound is further generated in situ, and the prepared nano lanthanum particles have more uniform distribution, and have a high phosphorus adsorption rate.

The invention relates to the use of sintered article of Sn-Mg-Al ternary hydrotalcite in adsorbing hexavalent chromium in water, the article is obtained through sintering hydrotalcite 3-8 hours at 400-550 deg C and can realize high adsorbent capacity for hexavalent chromium.

The invention provides preparation and application of nano zeolite reinforced xanthan gum composite hydrogel functional microspheres. The method selects a nanoscale zeolite molecular sieve which is synthesized by a template-free and low-cost manner, then premixes the nanoscale zeolite molecular sieve into a xanthan gum-sodium alga acid binary natural polysaccharide aqueous solution to prepare nano zeolite molecular sieve reinforced organic-inorganic composite hydrogel functional microspheres. Corresponding nano zeolite has a clear synergetic heavy metal adsorbing behavior; meanwhile, a corresponding xanthan gum-sodium alga acid binary polysaccharide cross-linking matrix has a richer micro three-dimensional network structure, thus micro channels of the nano zeolite, which are evenly distributed, directionally interact with polysaccharide molecular characteristic functional groups. The prepared microspheres have satisfactory effects of absorbing and removing cobalt ions and nickel ions in simulation nuclear industry wastewater.

The process of eliminating pollutant from underground water with combined nanofiltering membrane includes the following steps: 1. pre-treatment and treating with nanofiltering membrane; 2. analyzing the quality of polluted underground water through measuring Fe and Mn content, potassium permanganate index and relative organic matter molecular weight; 3. determining whether to progress to the following steps through water quality analysis; 4. performing the combined process A or B to treat water to reach drinking water standard in condition of potassium permanganate index not lower than 2.0 mg/l, Fe less than 0.2mg/l and Mn less than 0.05 mg/l; and 5. performing the combined process C or D to treat water to reach drinking water standard in condition of potassium permanganate index not lower than 2.0 mg/l, and Fe less than 0.2mg/l and/or Mn less than 0.05 mg/l. The present invention may be applied widely in water supply of city.

The invention discloses porous modified bentonite with foaming effect. The porous modified bentonite is characterized by being prepared from the following raw materials by weight: 85 to 90 parts of calcium bentonite, 1 to 2 parts of octadecyl trimethyl ammonium chloride, 1 to 2 parts of ammonium bicarbonate, 3 to 5 parts of activated carbon powder, 2 to 3 parts of sodium silicate, 0.8 to 1.3 parts of aminopropyltriethoxysilane, 2 to 2.5 parts of carboxymethyl cellulose, 5 to 7 parts of phenolic resin powder, 2 to 3 parts of crushed phoenix tree leaves and 3 to 4 parts of modified diatomite. According to the invention, a formula is reasonable; since bentonite is modified by adding foaming matters like ammonium bicarbonate and activated carbon powder and surfactants like octadecyl trimethyl ammonium chloride, the modified bentonite has porosity, so good adsorption effect is obtained; moreover, through good dispersion of the modified bentonite and the crushed phoenix tree leaves, the porous modified bentonite in the invention is porous and uniform in dispersion and is applicable as a water purification adsorbent, etc.

The invention relates to the technical field of drinking water purification, in particular to a multi-purpose purifying water filter applicable to military use, family use, and use for individual, unit and field. The water filter comprises a primary purifying water filtration device (A), a special purifying water filtration device (B), an advanced purifying water filtration device (C), a three-way valve (D), a manual or electric pneumatic storage tank water supply device (E), a municipal pipeline water supply device (F) and a manual or electric water pump water supply device (G). The water filter has the advantages that the multi-purpose purifying water filter with excellent effect of purification and filtration and convenience for use of military, family, unit, individual and field is provided. The multi-purpose purifying water filter has simple structural design of products, is convenient and practical and is low in cost, and can achieve the aims of outputting sanitary clean water and kitchen water, directly drinking water on the same purifying water filter respectively, and back flushing a filter element.

A liquid treatment cartridge includes a housing, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing. The connecting head includes at least three liquid ports, each at an end of a respective channel defined by the housing part. The connecting head is configured for insertion into a head part of a liquid treatment system such that the liquid ports of the connecting head are in sealed liquid communication with respective liquid ports in the head part. The liquid treatment cartridge includes at least one separate flow conductor part on the inside of the housing, attached to the housing part and including at least one conduit for conducting liquid so as to separate interior ends of at least two of the channels from those of at least one other of the channels. The at least three liquid ports at ends of respective channels defined by the housing part include at least a fourth liquid port.

The invention discloses an application of modified activated carbon in sewage treatment. The application is characterized in that the modified activated carbon is selected from activated carbon treated with hydrochloric acids and nitric acids of different concentrations, or treated at a high temperature. After the activated carbon used in the invention is treated with hydrochloric acids and nitric acids of different concentrations at different temperatures for a certain period of time, the adsorption capability of activated carbon powder is increased remarkably, and a good treatment effect on sewage containing rhodamine B serving as a dye is achieved particularly.

The invention discloses application of an Mg/Fe oxide modified biochar nano composite material in removing antibiotics, the Mg/Fe oxide modified biochar nano composite material takes biochar as a matrix, and Mg/Fe oxide is loaded on the surface of the biochar; the application method comprises the following steps: mixing the Mg/Fe oxide modified biochar nano composite material with ammonium persulfate and an antibiotic solution, and reacting to complete the removal of the antibiotics. The Mg/Fe oxide modified biochar nano composite material has the advantages of low price, high efficiency, large-scale production, high adsorption capacity, capability of quickly realizing solid-liquid separation, environmental friendliness and the like, is applied to activating persulfate to degrade antibiotic pollution in a water body, and is good in removal effect and high in reaction speed.

The invention discloses sewage and sludge separation treatment equipment, belongs to the technical field of sewage and sludge separation treatment, solves the problem of poor separation treatment effect of existing sewage and sludge treatment equipment. The equipment is technically characterized in that the equipment comprises a first treatment box, wherein sewage and sludge enter the first treatment box, a first motor is started, and reciprocating crushing of a crushing toothed plate is achieved, the crushing roller can perform the crushing again, a magnet can adsorb magnetic iron scraps, and a second cam rotates to achieve reciprocating vibration of a first filter screen; a third motor operates to achieve continuous rotation of stirring blades on a U-shaped stirring rod, the mixing effect is better, water is adsorbed and sterilized through a sterilization and odor suppression layer and a purification and disinfection layer, and discharging is convenient; sludge is placed in a second treatment box through material conveying blades on a first material conveying shaft, a fourth motor drives a crushing cutter on a second stirring shaft to crush, blowing fan blades rotate to generate wind which is blown to an electric heating wire for drying, the material conveying blades on a second material conveying shaft rotate to convey materials, and the sludge separation treatment device has the advantage of being good in separation treatment effect.

The invention provides a sodium alginate adsorption support as well as a preparation method and application thereof, and relates to the field of adsorption materials. The preparation method comprisesthe following steps: preparing a sodium alginate solution with a mass fraction of 2-13% by using sodium alginate as a solute and water as a solvent; then, pouring the sodium alginate solution into a culture plate, standing to remove bubbles, freezing at -35--25 DEG C for 8-12 hours first, and then, carrying out secondary freezing at a60--50 DEG C for 3-5 hours, and carrying out freeze drying in avacuum freeze dryer for 36-60 hours to obtainsodium alginate freeze-dried blocks; soaking the obtained sodium alginate freeze-dried blocks into an ethanol solution, then taking out sodium alginate, removing ethanol attached to the surface, then putting sodium alginate into a calcium chloride solution for a cross-linking reaction, taking out a sodium alginate product after the reaction, and removing calcium chloride on the surface so as to obtain the sodium alginate adsorption support. The sodium alginate adsorption support is low in preparation cost and high in heavy metal adsorption efficiency, and various problems of environmental pollution and production and operation cost are effectively solved.