266 results about "Trickling filter" patented technology

The invention discloses a method for treating waste gas with a biological trickling filter tower: the waste gas is passed through the bottom of the biological trickling filter tower, treated by the biological trickling filter tower, and the treated waste gas is discharged from the top, and the biological trickling filter tower is composed of The bottom of the tower with exhaust gas inlet, the tower body, and the top of the tower equipped with exhaust gas outlet are composed. The tower body is composed of several biological treatment units stacked from bottom to top, and the biological treatment units on adjacent layers are arranged There is a liquid interlayer, and the air vents for the adjacent layers are arranged on the liquid interlayer, and each layer of biological treatment units is independently equipped with a nutrient solution spray system and a temperature control device from top to bottom. Biological packing layer and nutrient solution receiving pool; the invention increases the processing load of the unit packing; improves the plugging problem of the packing layer, avoids the occurrence of channeling phenomenon, and has uniform and sufficient gas-liquid contact; packing replacement and backwashing are more convenient; the process Economical, suitable for the purification treatment of complex volatile organic mixed pollutants.

The invention provides a process and complete equipment for producing high-performance porous ceramsite from construction waste, which aims at solving the existing conditions that abandoned construction waste in China has a large output, occupies too much land, causes too much harm to the environment and is difficult to recycle. The invention is characterized in that special pretreatment, compounding, granulating, heat treatment and shaping procedures are established on the basis of composition characteristics of the construction waste. By controlling the preparation, the introducing mode and the addition of a pore forming agent and adopting appropriate heat treatment equipment, the invention establishes pertinent heating-up, thermal insulation and cooling systems to produce high-quality ceramsite. The produced ceramsite is mainly used as a biological film carrier in a sewage treatment plant, a filler in an odor treatment trickling filter, a filler of a light-weight high-strength construction material and a thermal and sound insulation material.

The invention discloses a method of removing ammonia nitrogen in landfill leachate, pertaining to the wastewater treatment field. The method mainly comprises the steps that magnesium salts and phosphates are first added into the landfill leachate, regulating the pH value and the mole ratio of the magnesium salts and the phosphates and the ammonia nitrogen, which are mixed and stirred so as to produce deposit of magnesium ammonium phosphate; supernatant and the deposit are next separated and precipitation and dehydration are then carried out; blast furnace slag is then added into the dehydrated magnesium ammonium phosphate, the weight ratio of the magnesium ammonium phosphate and the blast furnace slag is controlled, mixed by adding water, and then the magnesium ammonium phosphate is treated with pyrolysis with pyrolysis time and temperature being controlled; ammonia gas generated by the pyrolysis is treated by bio-trickling filter bed and a solid product by the pyrolysis is recovered and recycled in the treatment of the ammonia nitrogen. The invention can not only remove the ammonia nitrogen by recycling chemical precipitation agent with charges saved, but also realize reclamation utilization of the blast furnace slag. The concentration of effluent of the ammonia nitrogen can decrease below 100mg/ l after being treated by the invention, which greatly improves conditions for consequent biochemical treatment.

The invention is concerned with a method to remove sulfur dioxide of gas and smoke through bio-trickling filter tower with bamboo-carbon filler. The nutrient source spray on the filling inside the tower form the top of bio-trickling filter tower and run into the filling from up to down and enter the circulation gutter on the bottom of tower, then go back to the top of tower by circulation gutter. Meanwhile the gas and smoke with sulfur dioxide enter form the bottom of tower, during the rising process, it is cleaned by the bio-film with fixed desulfuration bacteria and discharged form the top of tower. The filling is the pretreatment bamboo-carbon and it is fit for getting Ferrous Sulfate desulfuration byproduct. The bamboo-carbon owns developed holes and strong adsorption ability to form steady and high active bio-film and to remove the sulfur dioxide. It has wide application future to callback sulfur with low cost.

The invention discloses a bio-trickling filtration device for treating organic waste gases. The device comprises a bio-trickling filter, a base, a liquid circulating device and a gas distribution system, wherein the bio-trickling filter is provided with a gas outlet at the top and a gas inlet at the bottom and is filled with fillers; the base is arranged at the bottom of the bio-trickling filter; the liquid circulating device is connected with the top and bottom of the bio-trickling filter respectively; and the gas distribution system comprises an electromagnetic gas pump, waste gas preparation control branches and a buffer bottle, which are sequentially connected in series. The bio-trickling filtration device has the advantages of good stability, convenience in operation, reusability and the like. The invention also discloses a bio-trickling filtration method for treating organic waste gases. The method comprises the steps of pellicle preparation and organic waste gas treatment and has higher organic waste gas treatment efficiency. The method has the following advantages that by adding the nonionic surfactant Tween 60 to a circulation liquid, the organic pollutant removal efficiency is greatly improved; and the retention time of gases in the empty filter is shorter and the removal load and efficiency are high.

The invention relates to a combined rural sewage treatment process and system. The process comprises the following steps: 1) efficient anaerobic treatment of wastewater; 2) multi-filler biological filtration; and 3) artificial wetland purification. In the system, an outlet of a grating well is connected with an inlet of an efficient anaerobic pond through a grit basin; the outlet of the efficient anaerobic pond is communicated with a spraying system on the upper part of a multi-filler biological trickling filter through a pump; the outlet of the multi-filler biological trickling filter is communicated with an artificial wetland through a secondary sedimentation tank; and the artificial wetland discharges standard purified water. By the process, most of the CODcr, BOD5, NH3-N and the like in the wastewater are removed, wherein the removal rate of CODcr can reach 80-85%, the removal rate of BOD5 can reach 90-95%, and the removal rate of NH3-N can reach 70-80%.

The invention belongs to the technical field of environmental pollution, in particular to a method for enhancing the petroleum pollution removing effect of seawater. The method comprises the following steps of: culturing high-yield biological surfactant bacteria and efficient petroleum degrading bacteria cultured and screened in a biological trickling filter in a mixed way by taking chitosan as a carrier, and performing freeze drying to obtain a microbial agent (bacterial powder); and treating petroleum pollution simulation seawater with the bacterial powder, wherein three days later, the initial concentration is 1,700 mg/L, the salinity is 3 percent, the removing rate of total petroleum hydrocarbon in the simulation seawater is over 95 percent, and the total petroleum hydrocarbon concentration in the seawater is lower than the primary standard in the Effluent Standards for Oil-Bearing Waste Water from Offshore Petroleum Development Industry. In the method, chitosan is taken as a carrier, so that microorganisms better float on the sea level and are tightly contacted with pollutants on the surface of seawater, and the petroleum removing rate is increased; moreover, the treatment cost of oil stains is reduced greatly; and the production process of the bacterial powder is safe, the application method is simple, and secondary environmental pollution is prevented.

The invention discloses composite ecological fillers and a preparation method of the composite ecological fillers. Adsorption functions of steel slag, anthracite and zeolite to nitrogen and phosphorus substances in sewage are utilized to optimize three types of fillers and enable the fillers to have a modularized characteristic. The composite ecological fillers are applicable to a trickling filter bed, an anaerobic biological filter tank, a filter tank, an aeration biological filter tank, a high-load biological filter tank, an active biological filter tank and the like, and can be used for river and lake slope protection materials.

The invention relates to a composite biological trickling filter for denitrification and dephosphorization, belonging to the technical field of sewage treatment. The biological trickling filter is cylinder-shaped and comprises a water distributing area, a stuffing layer and a water catch area from top to down; wherein, the water distributing area comprises a plurality of rollers, a rotary water distributor, a water inlet pipe, a water pipe, a water sprayer and tracks; the water inlet pipe is connected with the rotary water distributor, the rotary water distributor is connected with the water pipe which is provided with a water outlet, the water sprayer is positioned below the water pipe and is connected with the rollers; five layers of grid frames are arranged vertically in the stuffing layer, and the grid frames separate the stuffing layer into a grid structure, so that the stuffing layer is successively separated from bottom to top into a stone and sand layer, a composite steel slag stuffing layer, a plaster stuffing layer, a sawdust stuffing layer and a coke layer; the water catch area comprises a header tank, a water outlet pipe and a water catch plate, wherein, the header tank is positioned at the bottom of the trickling filer, and the water outlet pipe is connected with the header tank. By introducing the grid frames, the composite biological trickling filter has the advantages of eliminating the problems of the filter blockage, water accumulation and other defects, effectively improving the aerobic bacteria processing performance of the composite biological trickling filter, efficiently removing COD and simultaneously achieving the effects of denitrification and dephosphorization.

The invention provides a distributed sewage treatment device and method suitable for the country. The distributed sewage treatment device comprises a grille water collecting well unit, an anaerobic pool unit, a combined biological filter unit and an active biological filter bed unit. The grille water collecting well unit is used for balancing the water quality and water amount of sewage to be treated and includes a water collecting well, a grille hopper and a sewage pump. The anaerobic pool unit is used for conducting hydrolytic acidificationon on the sewage to be treated and includes an anaerobic pool, a water passing weir and anaerobic filler. The active biological filter bed unit comprises a settling pond, a water collecting pipe, a holed screen, coarse filler, fine filler, a screen hopper, an active biological filter bed and an inspection well. The sewage pump, the active biological trickling filter and the active biological filter bed are integrated, a sewage pipeline is directly guided into the device without additional building construction, and the device is more suitable for a rural area in construction and usage.

The invention discloses a biological deodorization filler and a trickling filter for removing odor of landfill leachate by using the filler. The filler comprises activated carbon loaded polyurethane and modified polypropylene; the trickling filter comprises a tower body, a purified gas outlet formed in the top of the tower body, a filler filling area arranged in the middle of the tower body, an odor inlet, a spraying system, a circulating liquid pool arranged at the lower part of the tower body, and a nutrient solution pool arranged at one side of the tower body; the odor inlet is formed in the side wall of the tower body; and a space for odor circulation is reserved between the upper part of the liquid level of the circulating liquid pool and the filler filling area. And the filler has stable deodorization efficiency. The biological deodorization filler has the advantages of large surface area, good hydrophilic moisturizing performance, strong acid resistance, corrosion resistance andcertain mechanical strength. The filler improves the capacity of a biological film in a reactor and increases the effective reaction area of pollutants and the biological film, so that the treatmentcapacity and buffer capacity of the bio-trickling filter and the volume load of the whole system are influenced, and finally, the purification effect of the bio-trickling filter for removing stink pollutants is improved.

The invention discloses combined bio-trickling filter linkage organic waste gas treatment equipment, which relates to an organic waste gas and waste water treatment device in environmental engineering. The invention adopts two sets of independent bio-trickling filters, increases a sewage inlet system, increases a back flushing gas inlet system, simultaneously has the effect of an aeration system, increases serial connection gas pipes 9 and 9', increases three-way valves 21, 21', 44 and 44', increases four-way valves 30 and 30', increases relevant valves, and controls the gas inlet and the liquid inlet, so the invention can operate in various modes such as parallel connection operation, serial connection operation, waste water and waste gas simultaneous treatment operation, waste water single treatment operation and the like. Four active carbon fiber cloth filling material processing units are filled and arranged in the bio-trickling filter and are in overlapped arrangement, the filling materials are multilayer cylindrical carbon fiber cloth and are in concentric cylindrical distribution, the diameter of the cylindrical active carbon fiber cloth filling material layer is gradually reduced from outside to inside, the gaps of each layer of filling materials are gradually reduced, the filling materials in the center are compact, the filling materials at the periphery are relatively sparse, and the upper ends of the filling materials are fixed on the same plane.

A sewage treatment system, includes a solid-liquid separating apparatus having a first filtering medium packed layer packed with a predetermined filtering medium, configured to separate sewage to be treated into solid components and filtered water by passing the sewage through the first filtering medium packed layer upward, and configured to reversely wash the first filtering medium packed layer by passing the filtered water through the first filtering medium packed layer downward at a predetermining timing; and a trickling filter installed on a latter stage of the solid-liquid separating apparatus, having a second filtering medium packed layer packed with a filtering medium attached with microorganisms, and configured to allow the filtered water to fall into the second filtering medium packed layer by trickling the filtered water onto an upper part of the second filtering medium packed layer to flow out treated water acquired by biotreating the filtered water by the microorganisms.

The invention discloses a partial-nitrification-and-anaerobic-ammonia-oxidation-combined denitrification method and device for synchronously treating urban sewage and mature landfill leachate. The device comprises a raw urban sewage tank, a raw mature landfill leachate tank, a middle water tank, a denitrification half partial nitrification reactor, a secondary sedimentation tank and a closed anaerobic-ammonia-oxidation biological trickling filter reactor. The secondary sedimentation tank is provided with a water outlet pipe, a returned sludge pipe and a left sludge pipe. The method includes the steps that the urban sewage and the mature landfill leachate are mixed in proportion to enter the middle water tank and then enter an anoxic region of the denitrification half partial nitrification reactor to be subjected to denitrification, and returned nitrate nitrogen is removed through organisms in the sewage; then the mixture enters an aerobic region to be subjected to half partial nitrification; then the mixture enters the closed anaerobic-ammonia-oxidation biological trickling filter reactor to be subjected to an anaerobic ammonia oxidation reaction. According to the method and device, combined treatment is carried out on the sewage generated by mixing the urban sewage and the mature landfill leachate through the partial-nitrification-and-anaerobic-ammonia-oxidation-combined technology, the joint denitrification aim is achieved, and the method and device are economical and easy to execute.

Provided is a factory-like recirculating aquaculture system for Hucho taimen, pertaining to the technical field of aquaculture. The key points of the system are described in that outlet ends of aquaculture ponds communicate with a sedimentation pond through pipelines; the sedimentation pond is located on the side of the aquaculture ponds; a microfiltration machine pond is arranged on the side of the aquaculture pond; additionally, an outlet end of the sedimentation pond communicates with an inlet end of the microfiltration machine pond; the side of the microfiltration machine pond is equippedwith a water return pond; aquaculture water at an outlet end of the microfiltration machine pond and an inlet end of the water return pond as well as in the water return pond enter a floating ball-type biological filter through a pipeline and a water pump; an outlet of the floating ball-type biological filter communicates with a trickling filter through a pipeline and a water pump; the trickling filter is located above an oxygenating tank; the oxygenating tank is disposed on the side of the water return pond; the interior of the oxygenating tank is equipped with an ultraviolet radiation disinfection device; the ultraviolet radiation disinfection device communicates with the oxygenating tank; water in the oxygenating tank communicates with the aquaculture ponds through pipelines. The factory-like recirculating aquaculture system for Hucho taimen is used for factory-like aquaculture of Hucho taimen.

The invention discloses a preparation method of a modified pumice packing for purifying sewage, which belongs to a preparation method of a packing related to sewage treatment in the field of environment friendliness. The method comprises the following steps of: crushing and screening pumice serving as a raw material; grinding and processing to obtain irregular granules; processing to obtain granules of required sizes; performing soaking modification treatment by using ionic liquid containing low-concentration lanthanum series rare-earth elements at normal temperature for 4 to 24 hours; and draining to obtain finished products. The packing has low-cost materials, a simple processing process and a good using effect. The preparation method can be widely applied to trickling-filtering beds, anaerobic biofilters, filters, biological fluidized beds, aerated biological filters, high-load biofilters, tower type biofilters, active biofilters, wetlands and the like.

The invention provides a domestic sewage treatment device and a method for treating sewage by utilizing the same. The domestic sewage treatment device comprises a trickling filter, a buffer water inlet pool, a microbial aerosol spraying pool and a water outlet pool, wherein the top of the trickling filter is provided with a water distributor; a filter layer is disposed in the trickling filter; thebottom of the trickling filter is communicated with the buffer water inlet pool; a sewage lifting pump is disposed in the buffer water inlet pool; a partition plate with holes is disposed at the bottom of the microbial aerosol spraying pool; atomizing spraying heads connected with the sewage lifting pump and used for spraying atomized water are disposed on the partition plate; the water outlet pool is communicated with the lower part of the partition plate; bacteria embedding bags and algae embedding bags as well as full-spectrum plant growth lamps and flushing devices are disposed in the inner cavity of the microbial aerosol spraying pool; a disinfecting device and a reflux device connected with the buffer water inlet pool are disposed in the water outlet pool; and a water outlet is formed in the side of the water outlet pool. The domestic sewage treatment device provided by the invention is high in treatment efficiency, good in filtering effect, low in cost and long in service life,can effectively kill pathogens and bacteria, and can perform chlorine removal.

The invention relates to a process for purifying volatile organic waste gas. The process is characterized in that after being pressurized, high-concentration volatile organic waste gas is conveyed into a biological washing tower to flow through a filler layer in the tower from bottom to top and form countercurrent contact with a solution adhered on the filler surface, a liquid phase obtained at the bottom of the tower after washing is conveyed into a biological reactor, and waste gas overflowing from the top of the tower is conveyed into an oxidation furnace; low-concentration volatile organicwaste gas is conveyed into a biological trickling filter for washing from the bottom part, then a gas phase part enters a first filler layer at the middle part of the biological trickling filter, andfirst spraying liquid is sprayed downwards from the top part of the biological trickling filter; after being adsorbed by the filler layer, the mixed waste gas enters the biological filtering pond from the upper part of the biological filtering pond; second spraying liquid is sprayed downwards, is mixed with the gas phase overflowing from the washing tower; after adsorption by a second filler layer, the gas phase is led out and is conveyed to a dehumidifier, the dehumidified gas phase is conveyed to an active-carbon adsorbing tower, and after adsorption by active carbon, the tail gas purifiedto reach the standard can be emptied.

The invention belongs to the technical field of sewage treatment in environmental engineering, and particularly relates to a method for sewage treatment in a compound tower-type ecological filtering pool. The method disclosed by the invention comprises the following steps of: collecting the domestic sewage of residents by a sewage tube network, removing suspended substances in the sewage via thick and thin grids, and pre-treating the sewage; pumping the sewage in the compound tower-type ecological filtering pool formed by connecting a one-stage high-level water distribution anaerobic filtering pool and a multi-stage earthworm trickling filtering pool in series via a sewage pump; automatically flowing, collecting and distributing the sewage via the action of gravity; and achieving the purpose of purifying the sewage via the synergistic effect of microorganisms, filter material, animals (earthworms) and plants in the filtering pool. The method for sewage treatment in a compound tower-type ecological filtering pool disclosed by the invention combines with traditional sewage treatment process and land treatment method, has the advantages of being good in water yielding effect, simple in operation and management, small in floor area, low in construction cost and the like, and has good economic effects and environmental benefits.

The invention relates to a treatment process of volatile organic waste gases. The treatment process is characterized in that high-concentration volatile organic waste gases enter an absorbing tower and are contacted with spraying alkali liquor for primary washing, and after a gas phase is discharged, the waste gases is mixed with first stream of liquid phase and enter an alkali liquor tank for secondary washing; the washed gas phase is conveyed to a thermal oxidation furnace for treatment; low-concentration volatile organic waste gases enter a biological trickling filter for washing, then thegas phase rises to enter a first filler layer, and after adsorption of the filler layer, the gas phase enters a biological filtering pond for washing and then enters a dehumidifier; after dehumidification, a part of gas phase is conveyed into an oxidation furnace, another part of gas phase enters an active-carbon adsorbing tower, and after being adsorbed to reach the standard, the gas phase can beemptied.

The invention discloses a method for treating organic waste gas by a bio-trickling filter based on a convolutional neural network, and belongs to the technical field of volatile organic compound treatment. The method comprises the following steps of: S10, constructing a bio-trickling filter processing network model based on the convolutional neural network; S20, training the bio-trickling filter processing network model by using a training sample; and S30, inputting real-time parameters of the bio-trickling filter into the trained bio-trickling filter processing network model, and giving a parameter matching scheme by the trained bio-trickling filter processing network model, wherein the parameter matching scheme is a basis for the operation of the bio-trickling filter. According to the bio-trickling filter processing network, the real-time organic pollutant concentration of the gas inlet and the liquid outlet amount parameter of a liquid sprayer are adjusted according to the prefabricated exhaust gas parameter index, so that the bio-trickling filter tower can fully exert the treatment capacity of a biological purification system, and meanwhile, the energy for operating the spraying pump is also saved.

The invention discloses a method for controlling excessive accumulation of biological membranes in a biological trickling filter. The biological trickling filter is inoculated by using active sludge, simultaneously volatile organic compounds are led into the biological trickling filter, a surface active agent is adopted to acclimatize microorganism in packing layers after a normal operation state is reached, the surface active agent is led in a nutrient solution supply tank of the biological trickling filter, a nutrient solution circulating pump enables mixed liquid of nutrient solution and the surface active agent to be sprayed on the surfaces of the packing layers through a sprayer, the sprayed surface active agent sequentially flows through each packing layer from top to bottom so as to moisten, disperse, lubricate and wash the biological membranes, and the biological membranes are discharged from the biological tricking filter through flow scouring so as to achieve the purpose of controlling of the excessive accumulation of the biological membranes in the packing layers. The method can economically and effectively control the excessive accumulation of the biological membranes in the packing layers of the biological trickling filter, keeps operation processes to be performed continuously, cannot interrupt the operation processes and experience a microbial activity recovery stage, can remarkably improve removal performance of organic compounds, especially hydrophobic organic compounds, and has the advantages of being low in long-term operating pressure drop, stable in performance, low in operating cost and easy and simple to operate.

The invention relates to a factory-like circulating water breeding method for hucho taimen, and belongs to the technical field of aquaculture. The method is characterized in that a hucho taimen circulating water breeding system is connected with a hucho taimen juvenile fish breeding system, juvenile fishes are subjected to tameness and cultivation and parallel screening in sequence, fish fry of different sizes are put into multiple breeding ponds respectively, water drained from the breeding ponds passes through a settling pond and a micro filter tank, and then residual feed and fecal suspensions are filtered and removed; detection is conducted by means of a PH online monitoring system, and the PH value of breeding water is adjusted; the breeding water enters a floating type biofilter through a water pump to remove organic matter such as ammonia nitrogen, nitrate and nitrite; harmful gas such as CO2 is removed in a trickling filter; pure oxygen is increased in an oxygen increasing groove; water obtained after oxygen increasing is subjected to ultraviolet ray disinfection; finally, the breeding water automatically flows into the breeding ponds through an oxygen increasing high-levelwater tank, and the whole hucho taimen circulating water breeding process is completed. The method is used for factory-like hucho taimen breeding.

The invention relates to a method for reinforcing the performance of a bio-trickling filter in treatment of toluene waste gas. According to the method, polyurethane foam is used as a filling material, sludge in a secondary se bio-trickling filter dimentation tank of a coking waste water treatment plant is used as an inoculation bacterial strain, the pH value of a nutrient solution is adjusted to 7.0, and the bio-trickling filter is started; low-concentration ethyl acetate waste gas is introduced into toluene waste gas, so the diversity of organisms in the bio-trickling filter is improved, the abundance of functional microbes is enhanced, and the removal of toluene waste gas is improved; and when the concentration of toluene is 1640 mg/m<3> and a concentration ratio of toluene to ethyl acetate is controlled to be 1: 0.5, the removal rate of toluene can reach 95.4 +/-2.2%, and removal load can reach 180.3 g/m<3>/h.

The invention discloses an ecological fish tank which comprises a fish tank and a bracket. The ecological fish tank is characterized in that the bottom of the fish tank is connected with a water storage cavity, a micro water pump is arranged in the water storage cavity, a connector with a fish tank water outlet and a fish tank water inlet are connected between the fish tank and the water storage cavity, an external water trickle filtering device is arranged on the fish tank and contains a filtering medium of bio-ball water trickle filtering layer, a filtering tan water outlet at the bottom of a filtering tank of the filtering device is communicated with a water inlet of the fish tank, the filtering tan water outlet at the bottom of a filtering tank is as high as the normal level of water in the fish tank, an inlet water nozzle in the filtering tank is arranged at the top of the filtering tank and is communicated with the micro water pump. The ecological fish tank has the advantages of simple structure, easiness for manufacturing, and convenience for assembly and disassembly; through the arrangement of the water trickle filtering device, the aquarium fish tank is free of water change all year round.

The invention provides a biological deodorization device. The biological deodorization device comprises a biological deodorization tower, wherein one end of the biological deodorization tower is connected with an odor collection device, and the other end of the biological deodorization tower is connected with a deodorization fan; a separation plate is vertically arranged inside the biological deodorization tower, one side of the separation plate is a biological trickling filter area, the biological trickling filter area is adjacent to the odor collection device, the other side of the separation plate is a biological filter area, and the biological filter area is adjacent to the deodorization fan; odor enters the biological deodorization tower by virtue of the odor collection device, and then sequentially passes the biological trickling filter area and the biological filter area to be deodorized, and deodorized gas is discharged to the atmosphere by virtue of the deodorization fan. The biological deodorization device is divided by the separation plate into the filter area and the trickling filter area, so that not only is the floor occupation area small, but also the odor amount in great fluctuation can be treated.