37results about How to "Shorten the film hanging cycle" patented technology

The invention discloses a suspended filler for quick biofilm culturing of microorganisms. The suspended filler is prepared from, by weight, 65-75 parts of high-density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of ferroferric oxide magnetic powder and 0.1-0.3 part of manganese zinc ferrite. The density of the suspended filler for quick biofilm culturing of microorganisms is 0.96-0.98 g/cm3. The biofilm culturing speed is high, disengagement does not occur easily, treatment efficiency is high, and the suspended filler is suitable for treating low-concentration organic matter and ammonia nitrogen in sewage and low-concentration organic waste water. The suspended filler has extremely high hydrophilia and biocompatibility, the filler has high adsorption strength on biological films, biofilm culturing time is remarkably shortened, and the COD and ammonia nitrogen removal rate is increased remarkably.

The invention discloses suspended microbial packing for wastewater treatment and a preparation method thereof. The suspended microbial packing is prepared from, by weight, 65-75 parts of high density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of ferromagnetic oxide powder and 0.1-0.3 part of manganese zinc ferrite. The suspended microbial packing is high in film formation speed, not prone to fall off, high in treatment efficiency and suitable for treatment of low-concentration organic matter and ammonia nitrogen in sewage and low-concentration organic wastewater. The biological packing has the extremely high hydrophilicity and biocompatibility, has the very high adsorption strength to a biological film and is beneficial for interception and accumulation of biomass on a packing carrier, and therefore the packing can better adapt to wastewater treatment under the low concentration condition.

The invention discloses a honeycomb modified biological stuffing applied to water treatment and a preparation method thereof. The stuffing is prepared from a macro molecule base material, the cross section of the stuffing is of a honeycomb structure, and activated carbon particles are embedded in and distributed on the internal and external surfaces of honeycombs of the stuffing. Compared with common biological stuffing in the prior art, the modified honeycomb biological stuffing has the advantages that hydrophily is stronger, the mass transfer performance and the attached biomass are increased, the aeration impact resistance and the load impact resistance are improved, and the microorganisms are easily attached and grow, thereby shortening the biofilm formation period.

The invention discloses a preparation method of a porous carbon reinforced microbial biofilm culturing carrier material. The preparation method specifically comprises the following steps: mixing acidified biomass charcoal, a nano inorganic material, polyacrylamide and an amino starch adhesive, spraying a reaction medium, carrying out surface functional modification granulation, and carbonizing toobtain porous carbon; immersing porous carbon in activated sludge, and carrying out biofilm formation by adopting a continuous cyclic activated sludge supply method to obtain the microbial biofilm formation carrier material which can be applied to removal of nitrogen and phosphorus in a water body. Reaction media such as iron, calcium, lanthanum salt and the like permeate into premixed material molecules through high-temperature and high-pressure impregnation; metal colloid nanometer oxide is generated and loaded on the inner surface and the outer surface of the calcined and carbonized porouscarbon so that the adsorption active sites of the porous carbon and the adsorption capacity of nitrogen and phosphorus pollutants are enhanced, the requirement of biological coating on the surface ofthe carrier can be met within 36-48h in cooperation with the porous structure on the surface of the biochar, and the domestication time of subsequent active microorganisms is shortened.

The invention discloses a hydrophilic biological carrier for wastewater treatment. The hydrophilic biological carrier comprises a hollow stub pipe, a first concentric ring and a second concentric ring, wherein the first concentric ring and the second concentric ring are sequentially arranged on the outer side of the hollow stub pipe in a concentric mode. The hydrophilic biological carrier is prepared from, by weight, 65-75 parts of high density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 part of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin and 0.5-2 parts of magnetic powder. The density of modified MBBR suspended biological stuffing is 0.96-0.98 g/cm3. The hydrophilic biological carrier is high in biofilm culturing speed, not prone to disengagement, high in treatment efficiency, and suitable for treatment of low-concentration organic matter and ammonia nitrogen in sewage and low-concentration organic wastewater. The biological stuffing has extremely high hydrophilia and biocompatibility and has high adsorption strength on a biological film.

The invention discloses modified biological filter packing. The suspended microbial packing comprises a hollow short pipe and a first concentric ring and a second concentric ring which are sequentially and concentrically arranged on the outer side of the hollow short pipe; the hollow short pipe, the first concentric ring and the second concentric ring are connected through connecting ribs, and the surface of the second concentric ring located on the outermost side is in a zigzag shape. The modified biological filter packing is prepared from, by weight, high density polyethylene, slaked lime, Dow powdered activated carbon, light calcium carbonate, maleic anhydride, gelatin, chitin, ferromagnetic oxide powder and manganese zinc ferrite. The modified biological filter packing is high in film formation speed, not prone to fall off, high in treatment efficiency and suitable for treatment of low-concentration organic matter and ammonia nitrogen in sewage and low-concentration organic wastewater and has the very high adsorption strength.

The invention provides a modified biological carrier used for waste water processing. The raw materials comprises the following raw materials, by weight, a basic material: 90-95% of high-density polyethylene, an auxiliary material: 0.2-1% of talcum powder, and modified functional materials: 1-3% of slag powder, 0.5-1.5% of ferric oxide, 0.5-3% of coke and 1-3% of cationic polyacrylamide or polyquaternary salt-10. The modified biocarrier has a density of 0.93-1.05g/cm<3>, the surface is rough, the specific surface area is large, and falling-off of a microbial film adhering to the outer surface of the carrier caused by friction among the carriers can be prevented in water. The biocarrier is mixed with functional materials with positive charges, affinity with microorganisms with negative charges in water can be enhanced and the film culturing cycle is shortened. The biocarrier contains enhanced components of biological enzymes and raises the decomposition capability of pollutants in sewage substantially. The service life of the biocarrier is more than 30 years, and replacing and maintenance are not needed.

The invention discloses a preparation method of a suspended biological carrier for water treatment. The preparation method comprises the following steps: an acetone solution is prepared by dissolving 3-5 parts of maleic anhydride and 0.2-0.6 parts of dicumyl peroxide with 2.5 kg of acetone and then put into a mixer; 55-65 parts of high-density polyethylene, 8-12 parts of low-density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 1.5-3 parts of gelatin, 1-2 parts of chitin and 0.5-2 parts of magnetic powder are added to the mixer and uniformly mixed, and the mixture is taken out and put into an open container, so that acetone can volatilize naturally and becomes solids; the solid materials are put into a double-screw extruder, and granulation is realized through melting extrusion; the prepared granules are put into a 45-model single screw extruder and are extruded to be formed through an extrusion die. The suspended biological carrier has very high adsorption intensity for a biological membrane and facilitates interception and accumulation of biomass on a filler carrier, the membrane forming speed is high, and the filler is not prone to fall.

The invention discloses an intermittent biological sand filtration treatment system. The intermittent biological sand filtration treatment system comprises a water storage container which is communicated with two upper water inlet tanks respectively through a water inlet system, wherein water outlets of the upper water inlet tanks are communicated with water inlets in the upper ends of biological sand filters below the upper water inlet tanks through pipes respectively, and water outlets in the lower ends of the biological sand filters are communicated with a clean water tank through the pipes respectively; a porous water distribution plate is arranged between the water inlet and a filler layer in each biological sand filter; a self-control system is formed by connecting a control device, control valves arranged on the pipes and low and high water level control meters arranged in the upper water inlet tanks, automatic water supplementing and intermittent operation of the upper water inlet tanks can be controlled according to water inlet periods of the upper water inlet tanks, overflow is prevented, and water drainage of the biological sand filters is controlled. The cellar water treatment efficiency of the intermittent biological sand filtration treatment system is improved by 25%-40% compared with that of biological sand filtration, and the maintenance period of the system is prolonged to 1.0-1.25 years from 2-5 months.

The invention discloses an efficient suspension type biological carrier. The hydrophilic biological carrier comprises a short hollow tube as well as a first concentric ring and a second concentric ring which are sequentially concentrically arranged on the outer side of the short hollow tube. The biological carrier comprises components in parts by weight as follows: 65-75 parts of high density polyethylene, 8-12 parts of low density polyethylene, 5-15 parts of slaked lime, 5-20 parts of Dow powdered activated carbon, 6-10 parts of light calcium carbonate, 3-5 parts of maleic anhydride, 0.2-0.6 parts of dicumyl peroxide, 1.5-3 parts of gelatin, 1-2 parts of chitin and 0.5-2 parts of magnetic powder; the density of the modified MBBR (moving bed biological reactor) suspension type biological filler is 0.96-0.98 g/cm<3>. According to the efficient suspension type biological carrier, microorganisms are attached to the carrier more easily, the hydrophilic biological carrier has a large specific surface area and extremely high adsorbability, a microbial film attached to the outer surface of the carrier can be prevented from shedding due to friction of the carriers in water, and the time required for film forming is short.

The invention discloses a coal gas generation furnace phenol-containing wastewater treatment method. According to the present invention, the treatment process is based on a special treatment apparatus; the special treatment apparatus comprises a catalytic oxidation pool, an oxidation stabilization pool, a post-biochemical BAF pool, a clear water pool, a dilution comprehensive tank, a pretreatmentfirst-stage BAF pool, a pretreatment second-stage BAF pool and an effluent pool, wherein the catalytic oxidation pool, the oxidation stabilization pool, the post-biochemical BAF pool and the clear water pool are sequentially connected through a rear-section transmission pipeline, ozone catalytic particles comprise active alumina particles, copper oxide, titanium dioxide, polyethylene glycol and polyvinyl alcohol, and a carrier comprises, by weight, high-density polyethylene, a polypropylene resin, slaked lime, Dow powder active carbon, light calcium carbonate, maleic anhydride, gelatin, chitin, ferroferric oxide magnetic powder and manganese-zinc ferrite; and with the coal gas generation furnace phenol-containing wastewater treatment method, the pollutant conversion speed and the pollutantconversion efficiency in the wastewater can be improved, the adsorption force can be generated, and the adsorption on the surface of the filler can be increased.

The present invention discloses an integrated denitrification and decarbonization aeration biological filtration pool, wherein an anaerobic carrier and an aerobic carrier respectively comprise a hollow short pipe, a first concentric ring and a second concentric ring, the first concentric ring and the second concentric ring are sequentially and concentrically arranged at the outer side of the hollow short pipe, an aerobic pool is vertically provided with an aeration cylinder embedded into the center positions of an upper sieve plate and a lower sieve plate, an aeration head is positioned at thebottom portion of the aeration cylinder, an oxygen pipe for oxygen transmission is positioned in the aeration cylinder and is connected to the aeration head, an aerobic biological filler is positioned between the side wall of the aerobic pool and the aeration cylinder, and a carrier comprises, by weight, high-density polyethylene, slaked lime, Dow powder active carbon, light calcium carbonate, maleic anhydride, dicumyl peroxide, gelatin, chitin, ferroferric oxide magnetic powder and manganese-zinc ferrite. According to the present invention, with the integrated denitrification and decarbonization aeration biological filtration pool, the high BOD5/TN ratio can be maintained, the smooth denitrification nitrogen removal performing can be ensured, and the TN removal rate can reach 80.6%.

The invention discloses a combined biological filter for removing nitrogen and phosphorus. The combined biological filter comprises an anaerobic tank and an aerobic tank; a lower supporting plate, an upper supporting plate and the side wall of the anaerobic tank form an anaerobic chamber; a plurality of anaerobic biological filler is arranged in the anaerobic chamber; the anaerobic biological filler consists of an anaerobic carrier and an anaerobic microbial membrane hanging to and covering the surface of the anaerobic carrier; a lower sieve plate and an upper sieve plate are respectively arranged at the lower part and the upper part of the aerobic tank; the lower sieve plate, the upper sieve plate and the side wall of the aerobic tank form an aerobic chamber; the carrier is prepared from the following components in parts by weight: high density polyethylene, slaked lime, Dow powder activated carbon, light calcium carbonate, maleic anhydride, dicumyl peroxide, gelatin, chitin, ferroferric oxide magnetic powder and manganese zinc ferrite. The combined biological filter pond disclosed by the invention can keep relatively-high BOD5/TN ratio, and ensures smooth operation of denitrification nitrogen removal; the removal rate of TN reaches 80.6 percent.

The invention discloses an aerobic nitrification-anoxic denitrification biological filter tank denitrification system. The aerobic nitrification-anoxic denitrification biological filter tank denitrification system comprises an anaerobic tank and an aerobic tank, wherein a lower support plate, an upper support plate and the side wall of the anaerobic tank form an anaerobic cavity; a plurality of anaerobic biological filler is arranged in the anaerobic cavity and are composed of anaerobic carriers and anaerobic microbial membranes hung on the surfaces of the anaerobic carriers; a lower sieve plate and an upper sieve plate are respectively mounted at the lower part and the upper part of the aerobic tank; the lower sieve plate, the upper sieve plate and the side wall of the aerobic tank form an aerobic cavity; a plurality of aerobic biological filler is arranged in the aerobic cavity; carriers are prepared from the following components in parts by weight: high-density polyethylene, slaked lime, Dow powdered activated carbon, light calcium carbonate, maleic anhydride, diisopropylbenzene peroxide, gelatin, chitin, ferroferric oxide magnetic powder and manganese zinc ferrite. The aerobic nitrification-anoxic denitrification biological filter tank denitrification system is capable of ensuring high ratio of BOD5/TN of the anaerobic filter tank; the removal effect of total nitrogen is totally improved; and the backflow of nitrification liquid is reduced.

The invention discloses a petrifaction comprehensive wastewater treatment device. The treatment device comprises a catalytic oxidation pond, an oxidation stabilization pond, a post BAF (Biological Aerated Filter), a clear water reservoir, a dilution integrated tank, a pretreatment first-stage BAF, a pretreated second-stage BAF and a water draining pond; an ozone generator is connected to the inner part of the catalytic oxidation pond through a gas pipeline; a water inlet hole and a water outlet hole are formed in the clear water reservoir; the water inlet hole of the clear water reservoir is connected with the post BAF through a rear-section transmission pipeline; the post BAF comprises a pond wall, a sieve plate and an aeration channel; a carrier is prepared from the following components in parts by weight: high density polyethylene, polypropylene resin, slaked lime, Dow powder activated carbon, light calcium carbonate, maleic anhydride, gelatin, chitin, ferroferric oxide magnetic powder and manganese zinc ferrite. According to the treatment device disclosed by the invention, low-cost advanced treatment and up-to-standard discharge of wastewater with high salt content and phenol content in the petroleum chemical industry.

The invention discloses a coal gasification phenol water pollution-free circulation treatment method. According to the present invention, the treatment process is based on a special treatment apparatus; the special treatment apparatus comprises a catalytic oxidation pool, an oxidation stabilization pool, a post-biochemical BAF pool, a clear water pool, a dilution comprehensive tank, a pretreatmentfirst-stage BAF pool, a pretreatment second-stage BAF pool and an effluent pool, wherein the catalytic oxidation pool, the oxidation stabilization pool, the post-biochemical BAF pool and the clear water pool are sequentially connected through a rear-section transmission pipeline, ozone catalytic particles comprise active alumina particles, copper oxide, titanium dioxide, polyethylene glycol and polyvinyl alcohol, and a carrier comprises, by weight, high-density polyethylene, a polypropylene resin, slaked lime, Dow powder active carbon, light calcium carbonate, maleic anhydride, gelatin, chitin, ferroferric oxide magnetic powder and manganese-zinc ferrite; and with the coal gasification phenol water pollution-free circulation treatment method, the good effects of wastewater COD removal, decolorization, deodorizing, toxic pollutant degradation and wastewater biodegradability improving can be provided.