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

The invention discloses a hydrophilic carrier for microbial biofilm formation. The hydrophilic carrier comprises a hollow short tube, and a first concentric ring and a second concentric ring which are sequentially concentrically arranged outside the hollow short tube, wherein the surface of the outermost second concentric ring is toothed; and the microbial filler is composed of the following components in parts by weight: high-density polyethylene, low-density polyethylene, white lime, Dow powder activated carbon, light calcium carbonate, maleic anhydride, dicumyl peroxide, gelatin, chitin, ferroferric oxide magnetic powder and manganese-zinc ferrite. The density of the microbial filler is 0.96-0.98 g / cm<3>. The hydrophilic carrier for microbial biofilm formation prolongs the contact time between microbes and organic matters, so that the organic matters are degraded quickly and thoroughly; and the biological oxidation can restore the surface adsorption capacity of the activated carbon.

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 provides a preparation method of a suspended packing bioreactor. The preparation method comprises the following steps: (1) uniformly mixing 0.2-0.6 part by weight of magnetic powder, 7-10 parts by weight of recycled rubber powder, 3-12 parts by weight of zeolite, 2-8 parts by weight of maleic anhydride, 0.2-0.8 part by weight of dicumyl peroxide, 0.5-2 parts by weight of chitin, 3-5 parts by weight of powdered coke and 1-2 parts by weight of slag powder, adding 70-75 parts by weight of high density polyethylene, and stirring at high speed; (2) adding the above mixed materials into a screw pelletizer and pelleting; (3) putting the pelleted particles into a screw extruder and carrying out extrusion molding, carrying out vacuum setting, cooling, carrying out mechanical holing, and carrying out cutting forming; and (4) finally irradiating the packing bioreactor by short wave ultraviolet. According to the invention, hydrophily of the suspended packing bioreactor is greatly enhanced, surface adsorbing capacity is increased, biofilm adsorption strength is raised, biofilm culturing period is shortened, and the biofilm is not easy to fall off. The suspended packing bioreactor is suitable for processing low concentration organic wastewater and phenolic wastewater.

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 belongs to the technical field of sewage treatment and inorganic fiber modification, and relates to surface modification of basalt fibers, in particular to a preparation method of a hydrophilic chitosan modified basalt fiber support. The method comprises the following steps: firstly, etching is performed on the surfaces of the basalt fibers with alkali liquor, and the fibers are washed with deionized water to be neutral, dried and activated; then physical coating is performed, chitosan is taken as a modifier, the etched and dried basalt fibers are soaked in a chitosan solution, and the hydrophilic polymer modified basalt fiber support material is prepared. The method is simple in process, convenient to operate, suitable for industrial production and easy to popularize. The prepared modified basalt fiber support can keep original properties such as high specific surface area, excellent mechanical property, acid-base resistance and the like of the basalt fibers; a contact angle can be reduced, hydrophilicity of the basalt fibers is improved, adhesion of microbes on support surface is promoted, growth of a biofilm is accelerated, a biofilm formation period is shortened,capacity and activity of the microbes are increased, water purification efficiency is increased, and higher reuse rate is realized.

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 present invention discloses a 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 pre-treatment first-stage BAF pool, a pre-treatment second-stage BAF pool and an effluent pool, wherein the dilution comprehensive tank, the pre-treatment first-stage BAF pool, the pre-treatment second-stage BAF pool and the effluentpool are sequentially connected through a front-section transmission pipeline, an ozone generator is connected to the interior of the catalytic oxidation pool through a gas pipeline, ozone catalyticparticles 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, dicumyl peroxide, gelatin, chitin and magnetic powder; and with the phenol-containing wastewater treatment method, the difficulty-degraded macromolecule organic matter is oxidized into the easily-biodegradable small molecule organic matter, such that the biodegradability of the effluent is improved.

The invention discloses a preparation technology of suspended filler for rapid microbial biofilm formation. The preparation technology comprises the following steps; an acetone solution is prepared from 3-5 parts of maleic anhydride and 0.2-0.6 parts of dicumyl peroxide through dissolution with 2.5 kg of acetone and placed in a mixer; 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, 1.5-3 parts of gelatin, 1-2 parts of chitin, 0.8-2 parts of Fe3O4 magnetic powder and 0.1-0.3 parts of manganese-zinc ferrite are added to the mixer and uniformly mixed, acetone volatilizes naturally after a mixture is taken out and placed in an open container, and the mixer becomes a solid; the solid material is fed into a twin-screw extruder and subjected to melt-extrusion and granulation; granulated granules are fed into a type 45 single-screw extruder and is subjected to extruding molding through an extrusion mold. The biofilm formation speed is high, a biofilm is not prone to falling, the treating efficiency is high, and the preparation technology is suitable for treating low-concentration organic matters and ammonia nitrogen in sewage.

The invention discloses an electrophilic suspended bio-carrier and a preparation method thereof. The electrophilic suspended bio-carrier comprises the following raw materials in parts by mass: 100-250 parts of high-molecular interstitial substance, 2-15 parts of electrophilic functional material, 2-20 parts of auxiliary material 1; 2-20 parts of auxiliary material 2 and 1-10 parts of auxiliary material 3. The electrophilic suspended bio-carrier is formed by the raw materials through mixing, granulation, screw extrusion, cooling and cutting. The electrophilic suspended bio-carrier provided by the invention is convenient to prepare, and the density of the electrophilic suspended bio-carrier is controllable within 0.91-0.97 g / cm<3>; according to the property that microbes have negative electricity in water, the electrophilic suspended bio-carrier is mixed with the positively charged functional material to endow the surface of the electrophilic suspended bio-carrier with positive charge to enhance the compatibility between the microbes and the electrophilic suspended bio-carrier. The electrophilic suspended bio-carrier is favorable for apposition growth of microbes and easy for biofilm culturing, has a short period, large biomass, high ammonia nitrogen removal efficiency and good effluent quality; the sludge settling property is good, and equipment operation is free from a sludge blockage phenomenon; the service life of the electrophilic suspended bio-carrier is long and manual replacement 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 relates to a circulating water pollution emission standard-reaching treatment device, mainly aiming at solving the problems of an existing sewage deep treatment technology that the treatment effect is not ideal, the emission requirements cannot be met and the operation cost is high. The circulating water pollution emission standard-reaching treatment device is characterized in that afilter (16) is connected into a catalytic oxidation tank (1) through a water inlet pipeline (7); the bottom of the catalytic oxidation tank (1) is connected with an ozone generator (8); the catalyticoxidation tank (1) is connected with an oxidization stabilization tank (2), a post-biochemical BAF tank (3) and a clean water tank (4) in sequence; the clean water tank (4) is provided with a water inlet hole and a water outlet hole; the water inlet hole of the clean water tank (4) is connected with the post-biochemical BAF tank (3); the water outlet hole (42) of the clean water tank (4) is connected to one end of a backwashing pump (11); and the other end of the backwashing pump (11) is connected into the catalytic oxidation tank and the post-biochemical BAF tank respectively through a reflowing pipeline (10). By adopting the circulating water pollution emission standard-reaching treatment device, the requirements of first-grade emission standards can be met and the operation cost is low.

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 combined biological filter for removing nitrogen and phosphorus. A lower supporting plate and an upper supporting plate are respectively arranged at the lower part and the upper part of an anaerobic tank; the lower supporting plate, the 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; an aerobic tank is vertically provided with an aeration tube embedded into the center of a lower sieve plate and the center of an upper sieve plate; 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 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 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 invention discloses a microbial culture carrier assembly for treating sewage, which comprises a grid row arranged on the surface of the sewage and a fiber biological rope hung below the grid row and used as a microbial carrier, wherein a plurality of aquatic plants are planted on the grid row, and the fiber biological rope is made of activated carbon fibers. The microbial culture carrier assembly is a material which is low in cost, environmentally friendly and recyclable, and has good economic benefits.

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 chemical wastewater recycling device. The chemical wastewater recycling device comprises a catalytic oxidation tank, an oxidation stabilization tank, an after-biochemical BAF tank and a clear water tank which are successively connected with each other through a transmission pipeline, wherein a filter is connected to the inside of the catalytic oxidation tank through a water inlet pipeline; an ozone generator is connected to the inside of the catalytic oxidation tank through a gas pipeline; a water inlet hole, a water outlet hole and a reflowing hole are formed in the clear water tank; the water inlet hole of the clear water tank is connected with the after-biochemical BAF tank through the transmission pipeline; the water outlet hole of the clear water tank is connected to one end of a backwashing pump; carriers are prepared from the following components in parts by weight: high-density polyethylene, polypropylene resin, slaked lime, Dow powdered activated carbon, light calcium carbonate, maleic anhydride, diisopropylbenzene peroxide, gelatin, chitin and magnetic powder. According to the chemical wastewater recycling device, the removal rate of ammonia nitrogen is greater than 92%; the removal rate of COD is greater than 78%; the chemical wastewater recycling device is highly applicable to wastewater treatment under low-concentration condition.

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 a distributed sewage bio-flocculation reinforcement device and a treatment method. The device comprises a reinforcement reaction tank, a fixing rack, bio-flocculation reinforcement carriers, a water inlet flow-guide pipe, a water outlet flow-guide pipe and a sludge discharge pipe. The front-end tank wall of the reinforcement reaction tank is connected to the water inlet flow-guide pipe. The fixing rack is arranged on the tank wall at a position lower than the water outlet flow-guide pipe. Two ends of steel bars of the fixing rack are connected with fixing hooks on the inner wall of the reinforcement reaction tank. Propylene filament suspension balls are fixed on the steel bars. The bio-flocculation reinforcement carriers are combinations of the propylene filament suspension balls and flocculating bacteria inoculation particles. The inoculation particles are modified fiber balls absorbing flocculating bacteria. A mixture of nutrients and sodium alginate is embedded on the surfaces of the fiber balls. The sludge discharge pipe is arranged at the center of the bottom of the reinforcement reaction tank. As a result of experiment, the removal rate of suspended matters in sewage is stabilized at 78.2-91.5%, which meets the requirement of a national standard. With the device and method provided by the invention, flocculating bacteria film-forming period can be shortened by 5-15 days, and flocculating agent dose can be reduced by 30-60%. Therefore, operation cost can be reduced, and countryside water environment can be protected.

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 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 relates to a preparation method of modified biologically-activated filter fillings, comprising the following steps of: (1) cleaning an inorganic carrier with the grain diameter of 3-8 millimetres, sequentially carrying out acid cleaning, alkaline cleaning and drying to obtain dry fillings; (2) adding the dry fillings to a metal salt solution to carry out soaking and ultraphonic, drying and sintering to obtain sintering charges; (3) naturally cooling and drying the sintering charges to obtain dry sintering charges; (4) adding the dry sintering charges to a polymeric hydrogel solution containing trace elements and nutrient salts, carrying out soaking and ultraphonic and reacting in a saturated boric acid solution or a 3% calcium chloride solution so as to obtain crosslinked fillings; and (5) drying and naturally cooling the crosslinked fillings so as to obtain the modified biologically-activated filter fillings. The invention has the advantages of simple process and easy implementation; and in addition, the obtained modified biologically-activated filter fillings can increase the activity and the number of biomembranes, shorten the membrane-forming periods of biological aerated filter fillings and enhance the sewage treatment efficiency and the stability of a biological aerated filter.

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.

The invention discloses a method for preparing a porous carbon-strengthened microbial film-hanging carrier material, which specifically comprises the following steps: after mixing acidified biomass carbon, nano-inorganic materials, polyacrylamide and amino starch binder, spraying a reaction medium to perform surface function Modified granulation and carbonization to obtain porous carbon; the porous carbon is immersed in activated sludge, and the method of continuous circulating supply of activated sludge is used to form a film, that is, a carrier material for microbial film hanging is obtained, which can be applied to nitrogen in water. Removal of phosphorus; In this application, the reaction medium iron, calcium, lanthanum salts, etc. are penetrated into the molecules of the premixed material through high temperature and high pressure impregnation, and the inner and outer surfaces of the porous carbon after calcination and carbonization are formed and loaded with metal colloidal nano-oxides, which strengthens the porous carbon. The adsorption active sites and the adsorption capacity of nitrogen and phosphorus pollutants, in conjunction with the porous structure of the biochar itself, can complete the biofilm requirements on the surface of the carrier within 36-48 hours, and accelerate the subsequent acclimation time of active microorganisms.