34results about How to "Short film setting time" patented technology

The invention discloses a method for treating coking wastewater, which belongs to the field of wastewater treatment. The method comprises the following steps that: wastewater of a coking plant enters a regulating reservoir for the adjustment of water quality and water amount, and orderly enters a hydrolytic tank, an anaerobic tank, a preaeration tank, a preliminary sedimentation tank, an aerobic tank, a secondary sedimentation tank and a coagulation reaction tank for treatment, wherein the hydrolytic tank and the preaeration tank are filled with a bio-cord filler; the sludge of the preliminary sedimentation tank refluxes into the hydrolytic tank and the anaerobic tank respectively; a clarifying solution of the secondary sedimentation tank refluxes into the anaerobic tank; and the aerobic tank adopts a moving bed bio-film reactor. The bio-cord filler adopted in the invention has short film formation time and high biomass, does not need repeated washing, and has strong shock resistance; and the moving bed bio-film reactor can fix a large amount of nitrobacteria with long generation time, and has no the problem of blocking. The method can remove high-concentration ammonia nitrogen and organic substances in the coking wastewater, and the COD and the ammonia nitrogen of treated effluent can synchronously achieve the primary standard of the national integrated wastewater discharge standard (GB9878-1996).

The invention provides a hydrophilic biological carrier for wastewater treatment. The hydrophilic biological carrier comprises base materials, hydrophilic functional materials and auxiliary materials, the base materials include high-density polyethylene, the hydrophilic functional materials include iron trioxide, coke and slag powder or polyvinyl alcohol, and the auxiliary materials include talcum powder. The density of the hydrophilic biological carrier for wastewater treatment is 0.93-1.05g/cm<3>, the biological carrier is rough in surface, large in specific surface area, short in membrane hanging time and high in impact resistance, can prevent microbial membranes attached to the outer surface of the carrier from falling off due to friction between the carriers in water, contact angles of sewage and the carrier are reduced, the hydrophilicity of the carrier is improved, so that microorganisms are more easily attached to the carrier, the biological carrier is provided with enhanced components of biological enzyme, the catalytic action of the biological enzyme is facilitated, the enhanced components are high in biological activity and fast in metabolism, the decomposition capacity of contamination in the water can be remarkably improved, the biological carrier contains ultraviolet-resistant components, the service life of the biological carrier is longer than 30 years, and replacement and maintenance are omitted.

The invention discloses a high-efficiency suspended filler and a preparation method thereof. The high-efficiency suspended filler comprises hydrophilic non-woven cloth, wherein the hydrophilic non-woven cloth comprises a hydrophilic fiber layer and a repellent macromolecular polymer layer which are laminated together; the repellent macromolecular polymer layer is adhered to a rigid support. The preparation method comprises the following steps: melting a repellent macromolecular polymer and spraying out the repellent macromolecular polymer from a high-temperature melting shower nozzle to form fiber attached to the surface of the rigid support; spraying out hydrophilic fiber from a hydrophilic fiber shower nozzle and uniformly distributing the hydrophilic fiber on the surface of the repellent macromolecular polymer fiber; sizing the two kinds of fiber on the rigid support to form a cloth shape by a hot-pressing process, wherein a part of the repellent macromolecular polymer fiber and the rigid support are fused into supporting points; preparing the sheet-like filler into various required shapes by a cutting, sewing or hot-melting process. The high-efficiency suspended filler has the advantages of short film-forming time, long life and high cost performance.

The invention relates to a Black Locust particle/polyvinyl formal composite filler and a preparation method thereof, and belongs to the environmental engineering material field. The composite filler is obtained through compounding polyvinyl formal (PVFM) foam tissues as a matrix with a disperse phase; and the disperse phase comprises Black Locust particles having particle sizes of 60-120 meshes, and the Black Locust particles are obtained through peeling natural Black Locust particle branches, boiling in an alkali, and crushing. The preparation method of the composite filler comprises the following steps: dissolving polyvinyl alcohol in water, adding a surfactant and the Black Locust particles at 40-80DEG C, uniformly stirring, adding an acid for adjusting the pH value to 1-3, adding formaldehyde or paraformaldehyde, and carrying out high speed stirring while reacting for foaming the obtained system until the volume is not expanded; and dumping the obtained system to a foam die, and carrying out heat insulation curing at 50-65DEG C for 10-24h. The composite filler provided by the invention has the advantages of high biocompatibility, superior film hanging performance, and maintenance of many excellent characteristics of the PVFM, such as low density, high specific surface area, high poriness, good elasticity, wear resistance, corrosion resistance and the like.

The invention discloses an efficient dephosphorization composite filler and a preparation method thereof, and the preparation method comprises the following steps: step 1, stirring and dissolving polyvinyl alcohol in water at 95 DEG C to form a stable solution; step 2, bonding and forming a chemical phosphorus removal agent by using a polyvinyl alcohol aqueous solution, drying in a drying oven at 105 DEG C, and crushing to obtain phosphorus removal agent particles with the particle size of 20-200 meshes; step 3, adding phosphorus removal agent particles, a catalyst, a surfactant, a cross-linking agent and sodium bicarbonate into the polyvinyl alcohol aqueous solution, stirring at a high speed, foaming for 2 minutes, pouring into a mold, and preserving heat at 65 DEG C, curing and shaping; and step 4, demolding, cleaning, drying, and cutting into blocks with corresponding sizes according to needs to obtain the phosphorus removal composite filler. The preparation process is simple, and the filler is stable in chemical property, easy to form a film, large in porosity, high in mechanical strength, excellent in adsorption efficiency and adsorption capacity and excellent in phosphorus removal performance.

The invention provides a nutritional type bio-carrier for wastewater treatment. The base material is high density polyethylene, the nutritional functional material is starch, ferric oxide, coke and slag powder, and the auxiliary material is talcum powder. The nutritional type bio-carrier for wastewater treatment provided by the invention has density of 0.93-1.05g/cm<3>, and has rough surface, large specific surface area and strong impact resistance, and can prevent the drop of a microbial film attached to the carrier outer surface in water due to friction between carriers. After film formation, the dehydrogenase activity and biomass on the carrier surface are more than twice those of the high density polyethylene directly made carrier. The bio-carrier contains the enhancement components of bio-enzyme, can promote the catalytic effect of bio-enzyme, has high bioactivity and fast metabolism, and can significantly enhance the decomposition ability of pollutants in water. Containing antiultraviolet components, the bio-carrier has a service life of over 30 years, and has no need for replacement and maintenance.

The invention relates to a manufacturing method of a flow-separated ball carrier for sewage treatment. The manufacturing method of the flow-separated ball carrier for sewage treatment comprises the following steps of (1) according to the weight percentage, mixing 77 to 86 percent of red soil, 7 to 12 percent of ground hydrated lime, 4 to 7 percent of hemihydrate gypsum powder, and 3 to 5 percent of cement, and uniformly stirring to obtain a mixture; (2) adding water with the weight being 0.3 to 0.4 times of the weight of the mixture into the mixture, and preparing to obtain a pug; (3) placingthe pug in a hollow part in a flow-separated ball mould with a steel needle, pulling out the steel needle through extrusion or compression moulding, and obtaining a flow-separated ball carrier finished product with recesses, honeycomb holes and a channel space; and (4) naturally drying the flow-separated ball carrier finished product for 14 to 21 days at room temperature, and obtaining the flow-separated ball carrier with a structure with different honeycomb hole and micro-hole sizes. The manufacturing method of the flow-separated ball carrier for sewage treatment provided by the invention issimple in production process and low in cost; and a prepared flow-separated ball filler is short in membrane-forming time, easy to form a membrane, and capable of realizing automatic membrane-formingsince no any activated sludge is added for bacterium cultivation in the experimental process.

The invention discloses a preparation method of a straw filler for sewage treatment. The preparation method comprises the following steps: step a, washing crop straws with water, drying, and crushing into straw particles; step b, adding polyvinyl alcohol into water, stirring, and heating to form a stable solution; step c, adding straw particles, inorganic mineral particles, a catalyst and a cross-linking agent into the stable solution, and uniformly stirring and mixing; and step d, performing papermaking forming by adopting a filter screen, performing negative pressure extraction on redundant pulp under the filter screen, then conveying the pulp to a heating environment for curing, and cutting the pulp into cubic blocks. The invention also discloses the straw filler which is prepared by adopting the preparation method. According to the straw filler for sewage treatment and the preparation method of the straw filler, crop waste is utilized in a high-value mode, meanwhile, the function of slowly releasing a carbon source is achieved, additional carbon sources can be reduced in the sewage treatment process, the filler is good in hydrophilic performance and high in porosity, attachment and survival of microorganisms are facilitated, and the sewage treatment effect is ensured.

The invention discloses a high salinity wastewater drainage and treatment system. The high salinity wastewater drainage and treatment system comprises a catalysis oxidation pond, an oxidation stabilization pond, an after-biochemical BAF pond, a clean water pond, a diluting comprehensive tank, a pretreatment primary BAF pond, a pretreatment secondary BAF pond and a water outlet pond, the catalysisoxidation pond, the oxidation stabilization pond, the after-biochemical BAF pond and the clean water pond are connected in sequence through a rear transmission pipeline, and the catalysis oxidation pond is filled with ozone catalysis particles in the form of a static bed; the ozone catalysis particles are composed of activated aluminum oxide particles, copper oxide, titanium oxide, polyethylene glycol and polyvinyl alcohol; a carrier is prepared from, by weight, high-density polyethylene, polypropylene resin, low-density polyethylene, bamboo charcoal powder, wood powder, lignin, dichloromethane, diethyl guanidine sulfate, N,N'-ethylene bis stearamide, maleic anhydride, dicumyl peroxide and gelatin. The high salinity wastewater drainage and treatment system has the good effects of removingCOD, removing color, removing odor, degrading poisonous pollutants for wastewater and maintaining the biodegradability of the wastewater.

The invention discloses an organic wastewater treatment system. An ozone generator is connected into a catalytic oxidation tank through a gas pipeline, a clean-water tank is provided with a water inlet hole and a water outlet hole, the water inlet hole of the clean-water tank is connected with a post-biochemical BAF tank through a rear-section transmission pipeline, the clean-water tank is connected to one end of a backwashing pump, the other end of the backwashing pump is connected to the catalytic oxidation tank and the inside of the post-biochemical BAF tank through a rear-section backflowpipeline, the catalytic oxidation tank is filled with ozone catalyzing particles in a stationary bed mode, a plurality of biological packings are put in the post-biochemical BAF tank, each biologicalpacking consists of a carrier and a microbial film formed on the surface of the carrier, and the carrier is prepared from, by weight, high-density polyethylene, polypropylene resin, low-density polyethylene, bamboo charcoal powder, wood powder, lignin, dichloromethane, diethyl guanidine sulfate, N,N'-ethylene bis-stearamide, maleic anhydride, dicumyl peroxide and gelatin. The biodegradability of effluent is improved by adopting the system, the purpose of efficiently degrading organic pollutants is achieved, and toxic pollutants are degraded.

The invention relates to the technical field of sewage treatment, and especially relates to an aerobic carrier for domestic sewage treatment, and a preparation method and an application thereof. The aerobic carrier is of a spherical framework structure formed by a first cylinder, a second cylinder, a third cylinder and plate-shaped connecting ribs, wherein the outer diameters of the first cylinder, the second cylinder and the third cylinder are sequentially increased. The aerobic biological carrier not only has good mechanical strength and wear resistance, but also has excellent specific surface area and fluidization performance, the energy consumption can be reduced, the surface contact angle is small after the components of the carrier are further modified, microorganism attachment is facilitated, the biofilm culturing time is greatly shortened, the pollutant removal efficiency of the carrier is high, and the performance is excellent.

The invention discloses an electroplating wastewater biochemical treatment device. The biochemical treatment device comprises a raw water bucket and biochemical pools, and the raw water bucket is connected with the biochemical pools through a lifting pump; the number of the biochemical pools is not less than 4; biofilm culturing biochemistry is conducted in the biochemical pools through biochemical filler, the biochemical filler is composed of a nylon net and chemical fiber cotton, the chemical fiber cotton is fixed to the nylon net through nylon net clamps, and the use amount of the chemicalfiber cotton is 150-500g/m<2>; in the same biochemical pool, the distance between every two adjacent nylon net clamps is 15-25mm, and the distance between every two adjacent mycoderm is 100-200mm; themounting direction of the mycoderm is parallel to the water inlet direction in the biochemical pools, the distance between the top of the mycoderm and the water surface is 100-150mm, and the distancebetween the bottom of the mycoderm and an aeration head of each biochemical pool is 150-100mm; and the distances from the mycoderm to the four side surfaces of the biochemical pools are respectively100-150mm. The invention also discloses application of the biochemical treatment device.

The present invention discloses a phenol-containing wastewater biological treatment apparatus, wherein a dilution comprehensive tank, a pre-treatment first-stage BAF pool, a pre-treatment second-stageBAF pool and an effluent pool are sequentially connected through a front-section transmission pipeline, a catalytic oxidation pool, an oxidation stabilization pool, a post-biochemical BAF pool and aclear water pool are sequentially connected through a rear-section transmission pipeline, the effluent pool is connected to the interior of the catalytic oxidation pool through a water inlet pipeline,an ozone generator is connected to the interior of the catalytic oxidation pool through a gas pipeline, ozone catalytic particles comprise active alumina particles, copper oxide, polyethylene glycol,polyvinyl alcohol, titanium dioxide, hydroxypropyl cellulose and manganese dioxide, and a carrier comprises, by weight, high-density polyethylene, a polypropylene resin, slaked lime, Dow powder active carbon, light calcium carbonate, maleic anhydride, dicumyl peroxide, gelatin, chitin and magnetic powder. According to the present invention, with the phenol-containing wastewater biological treatment apparatus, the difficulty-degraded macromolecule organic matter is oxidized into the easily-biodegradable small molecule organic matter, and the final effluent is less than 30 mg/L, such that the combination process of the present invention is economical and efficient.