281 results about "Moving bed biofilm reactor" patented technology

An integrated bioreactor and its applications as well as a method for treatment of highly-concentrated organic wastewater using the same. The integrated bioreactor with a concentric columnar structure includes an inner layer and an outer layer, in which the inner layer is an upflow anaerobic sludge blanket (UASB) and the outer layer is a moving bed biofilm reactor (MBBR). The effluent of the MBBR is recycled into UASB via a reflux pump mounted between a water tank and the integrated bioreactor. A water outlet of the UASB is arranged with an on-line pH monitor and a mechanical agitation device is arranged on the top of a bottom water distributor. The bioreactor is low in cost, features friendly maintenance, stable operation, and high degree of automation, and can be applied under low temperature.

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 relates to a pharmaceutical chemical wastewater treatment device and a treatment method thereof. The treatment device comprises a vertical flow type coagulative precipitation tank, a catalysis zero valence bimetallic packing tower, a Fenton-like reactor, an anaerobic MBBR (Moving Bed Biofilm Reactor) pool, an aerobiotic MBBR pool and a solid-liquid seperation system which are sequentially connected. The treatment method is a catalysis zero valence bimetallic- Fenton-like-MBBR coupling treatment method. The treatment device has the advantages of being capable of simultaneously treating multiple organic pollutants, occupying a small area and being simple in structure and easy for finalization and industrialization. The catalysis zero valence bimetallic packing tower enables the performance of reducing and treating degradation-resistant organic matters to be stronger, does not harden after running for long-term and is suitable for a wide pH value range and low in operating cost, and the consumption of metallic iron is little. The Fenton-like reactor is faster in oxidation reaction rate and suitable for the wide pH value range. The pharmaceutical chemical wastewater treated by the wastewater treatment method provided by the invention can reach the new emission standard of wastewater in a pharmaceutical chemical industry.

The invention discloses a composite moving bed bio-film reactor. The composite moving bed bio-film reactor comprises a reactor body; a hollow sphere filler is filled in the reactor body; an aeration device is arranged at the bottom in the reactor body; an inner cylinder and an outer cylinder which are sleeved are also arranged in the reactor body; the upper and lower ports of the inner cylinder and the outer cylinder are completely opened; the lower part of the outer cylinder wall is provided with a water inlet pipe; an inclined tube sedimentation tank is arranged between the outer cylinder and the reactor body; the outer cylinder wall below the inclined tube sedimentation tank is provided with a sedimentation tank water inlet; and the reactor body above the inclined tube sedimentation tank is provided with an overflow channel, the upper edge of the overflow channel is lower than the outer cylinder wall, and the bottom of the overflow channel is provided with a water outlet pipe. According to the technical scheme of the composite moving bed bio-film reactor with simple structure, low manufacturing cost and small floor area, the advantages of a traditional moving bed bio-film reactor, a three-phase biological fluidized bed, a biological contact oxidation method and an active sludge method are organically combined.

The invention belongs to the field of water treatment, and relates to a two-stage moving bed biomembrane reactor medium water treatment system. The two-stage moving bed biomembrane reactor medium water treatment system is characterized in that the whole process adopts a programmable PLC automatic control system; the main treatment structure is two-stage cascade connected moving bed biomembrane reactors; and the concrete process flow is as follows: domestic sewage or sewage with similar water quality enters a regulating pond through grates and then enters a first-stage MBBR reactor and a second-stage MBBR reactor in turn by pump lifting; and then the water is outputted into a depositing pond, enters a clear water pond and is reused for flushing toilet or as landscape water after cyclic ultraviolet sterilization. The two-stage moving bed biomembrane reactor medium water treatment system has the advantages that: 1 the system has good medium water treatment effects, stronger resistance to shock load and stable outputted water quality; 2 the system has simple and convenient operating management, a small floor area, convenient maintenance and little excessive sludge; and the system adopts the PLC automatic control system with high automatic degree; 3 the system adopts a mechanical aeration mode, thereby bringing about low energy consumption and good oxygenation performance without an independent blower; 4 the system adopts a cyclic ultraviolet sterilization mode without any medicament added during the whole process, thereby avoiding the secondary pollution; and 5 the system has a wide application range.

The invention discloses an integrated bioreactor as well as the application thereof and a method for treating high-concentration organic wastewater, belonging to the field of wastewater treatment. The integrated bioreactor adopts a concentric cylindrical structure, the inner layer of which is a UASB (Upflow Anaerobic Sludge Blanket) and the outer layer of which is an MBBR (Moving Bed Biofilm Reactor), wherein a pH online monitor is arranged at the water outlet of the UASB which is provided with a stirring device at the bottom, a cycle pump is arranged between a water collecting tank and the inlet of the reactor for refluxing the effluence of the MBBR in a reflux ratio of 100 percent in normal circumstance, and the MBBR is suitable for wastewater treatment at a lower temperature and can take a certain heat supply and preservation action to the UASB. In addition, an effluence pH value of the UASB is smaller than 6.8, and the stirring device of the UASB is started to increase the reflux ratio of the MBBR, complement the alkalinity of the UASB in time, maintain the acid-base balance of the UASB and ensure the biologic stability of microorganisms. The method and the device provided by the invention can stably treat the high-concentration organic wastewater under a low-temperature condition with high efficiency, has less investment, small floor area and stable operation without additional alkalinity or heating, saves maintenance and operation costs and reduces energy consumption.

In one embodiment, a method includes receiving wastewater having a first total organic carbon (TOC) at a wastewater treatment system comprising a reactor system, wherein the reactor system comprises an anaerobic moving bed biofilm reactor (MBBR) and an aerobic MBBR. The method further includes treating the wastewater in the anaerobic MBBR, wherein the anaerobic MBBR comprises first bio-carriers configured to degrade at least a portion of the first TOC in the wastewater to generate a first treated wastewater and biogas, wherein the first treated wastewater has a second TOC that is less than the first TOC. The method also includes providing the biogas to an external system.

The invention relates to a biofilm formation method of a suspended filler in a high-salt wastewater MBBR (moving bed biofilm reactor) treatment system. A halophile microbial inoculant is added into the MBBR, aeration is performed to enable the suspended filler to be in the fluidized state, and sludge discharge and sludge return are utilized to control the microbial biomass and microbial growth environment in the system, thereby promoting the biofilm-formation microbial florae to dominate and attach to the filler surface, and finally growing the biofilm on the filler surface. In the suspended filler biofilm formation process, the salt concentration range in the MBBR reactor is kept the same as the salt concentration range of high-salt wastewater. The method can be used for treating high-salt organic wastewater with the salt concentration of 1-10%, thereby widening the application range of the MBBR technique.

The invention discloses a whole process low-oxygen aeration SBMBBR (sequencing batch moving bed biofilm reactor) synchronous denitrification and dephosphorization method and belongs to the technical field of sewage treatment. The method achieves synchronous denitrification and dephosphorization by adding suspension filling into the traditional SBR (sequencing batch reactor) to form an SBMBBR, controlling an organic load, a nitrogen and phosphorus load and a DO (dissolved oxygen) value in the reactor, performing staged culture and acclimation on an inoculum, and performing synchronous nitrification-denitrification and denitrification-dephosphorization on enriched denitrification polyphosphate accumulating bacteria and aerobic polyphosphate accumulating bacteria and by other approaches. The method achieves the synchronous denitrification and dephosphorization for low C/N (carbon/nitrogen) ratio sewage in the same reactor under a whole process low-oxygen aeration condition, has the advantages of a simple technology, simple operational control, a high sludge load, small floor area, low energy consumption, no need of an additional carbon source, stable denitrification and dephosphorization effects and the like. The method has very practical significance in simplifying the traditional denitrification and dephosphorization sewage treatment technology, improving the denitrification and dephosphorization effects and reducing the floor area and energy consumption, and is a sewage treatment technology with good application prospects.

A method for removing nitrogen and phosphorus by MBBRs (Moving Bed Biofilm Reactors) with sectionalized water inflow belongs to the field of sewage treatment. The MBBRs at first, second and third sections are divided into three sections, a sand disc aerator is arranged at the bottom of each MBBR, a bearing layer is arranged above each sand disc aerator, and a filling area is arranged above each bearing layer; hollow spheres are adopted as fillers, and the specification specific surface area of the hollow sphere ranges from 400m<2>/m<3> to 500m<2>/m<3>; and the filling volume of the fillers ranges from 15% to 45%. According to the method, the improved sectionalized water inflow technology is combined with fluidized bed biofilms, and the technology has the advantages of resisting shock load, strengthening SND (Shortcut Nitrification and Denitrification) denitrification, saving energy and reducing consumption by combination of activated sludge and the fluidized bed biofilms. Therefore, the method is applicable to the field of deep nitrogen and phosphorus removing on domestic sewage and industrial sewage in large, middle and small cities and towns.

The invention relates to a wastewater treatment device and in particular relates to a wastewater treatment device and a wastewater treatment method for realizing deep wastewater denitrification based on a sequencing batch type A/O (Anoxic/Oxic) linkage system. The device comprises a regulating reservoir, an SBR (Styrene Butadiene Rubber) reaction tank, an intermediate reservoir and a membrane bio-reactor (MBR)/moving bed biofilm reactor (MBBR) reaction tank, wherein the SBR reaction tank comprises an SBR reaction tank anoxic zone and an SBR reaction tank aerobic zone. The method for treating wastewater by using the device comprises the following steps: starting the SBR reaction tank linkage water inlet to carry out a nitrosation reaction; starting the MBR/MBBR reaction tank to carry out an anaerobic ammonia oxidation reaction. The device and the method have the advantages that the ammonia nitrogen loading resistance is high, the nitrosation reaction and anaerobic ammonia oxidation reaction can be rapidly realized and stabilized, the process cost is saved and the like.

A method for treating mixed wastewater from pharmaceutical chemical industry parks including introducing mixed wastewater into a regulation tank for regulation of water flow and water quality, and then into a hydrolysis tank having a hanged filler and employing upflow water distribution, into an anaerobic tank employing upflow water distribution, into a moving bed biofilm reactor having a suspended filler and an aeration device at the bottom thereof, into a biological aerated filter including a ceramic filler, and finally treating using coagulating precipitation process. The final effluent has less than 100 mg/L COD.

The invention discloses a modified MBBR (moving bed biofilm reactor) suspended biological filler which is composed of the following components in parts by weight: 65-75 parts of high-density polyethylene, 5-15 parts of white lime, 5-20 parts of Dow powder 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 the modified MBBR suspended biological filler is 0.96-0.98 g/cm<3>. The modified MBBR suspended biological filler has the advantages of high biofilm formation speed, low shedding tendency and high treatment efficiency, is suitable for treating low-concentration organic matters and ammonia nitrogen in sewage, and is applicable to low-concentration organic wastewater. The biological filler has very high hydrophilicity and biological affinity, has very high adsorption strength for the biofilm, and thus, is beneficial to entrapment and accumulation of biomass on the filler carrier.

The invention provides a process for preparing desalted water for iron and steel plants with slightly polluted surface water as a water source, belonging to the technical field of sewage treatment and recycling. In the process, a high density sedimentation tank, an MBBR (moving bed biofilm reactor), a V-shaped filter and a deep membrane processing unit are adopted. The process is characterized in that the slightly polluted surface water enters a vortex-type grit chamber, an adjusting tank, a high density clarification tank, the MBBR and the physicochemical and biochemical processing units such as the V-shaped filter and the like in sequence after being lifted; the treated water enters an ultrafiltration device and a reverse osmosis device after becoming qualified; and finally the finished water is used by desalting users on the production lines of the iron and steel plants. The process has the advantages that the consumption of new water in the iron and steel plants can be reduced, the water resources can be saved, and the process is simple in flow and low in operating cost, has stable operation effects and achieves better economic and social benefits.

The invention provides a folded plate anaerobic moving biofilm online sewage treatment system and relates to the technical field of sewage treatment systems. The folded plate anaerobic moving biofilm online sewage treatment system comprises a folded plate anaerobic reactor; the output end of the folded plate anaerobic reactor is connected with a moving bed biofilm reactor; and the first output end of the moving bed biofilm reactor is connected with a first water pipe. The invention designs an efficient energy-saving treatment method which is small in size, low in infrastructure expenditure and running expense, and more economical than a contact oxidation method and is an upgrade and an improvement or a substitute of a traditional activated sludge process, a fixed bed contact oxidation method and other treatment methods. The folded plate anaerobic moving biofilm online sewage treatment system is widely applied to newly building or upgrading and improving all the existing industrial and domestic sewage treatment systems and particularly greatly improving the system effluent quality and the phosphorus and nitrogen removal effect in the upgrading and improvement project on the premise that the improvement on the existing building is small, and the investment is reduced.

The invention relates to a method for biological denitrogenation of nitrogen-containing organic industrial wastewater and belongs to the field of industrial wastewater treatment methods. The method comprises the following steps of 1, feeding nitrogen-containing organic industrial wastewater into a regulating tank with stirring so that water in the regulating tank is homogenized, 2, pouring a suspended filler into a moving-bed bio-membrane reactor, carrying out bio-membrane culture, after the bio-membrane culture, inputting the wastewater in the regulating tank into the moving-bed bio-membrane reactor, and carrying out treatment, wherein the moving-bed bio-membrane reactor operates by water continuous feeding, water continuous discharge and intermittent aeration methods, and 3, inputting the wastewater treated by the moving-bed bio-membrane reactor into an inner circulating membrane bioreactor, putting activated sludge into the inner circulating membrane bioreactor, treating by the water continuous feeding, water continuous discharge and intermittent aeration methods, treating the treated wastewater by a membrane filtration assembly of the inner circulating membrane bioreactor, and discharging it so that biological denitrogenation treatment on nitrogen-containing organic industrial wastewater is finished.

The invention relates to fluidized bed filler with a reinforced denitrification function and a preparation method thereof. The fluidized bed filler comprises the following components: a light framework, a hard slow-release carbon source, an ammonia nitrogen enriching agent, a phosphorus enrichment agent and a biological enzyme activity increasing agent. According to the invention, components of sewage to be treated is combined for the first time, and components of suspended filler is designed, so that suspended filler suitable for a moving bed biofilm reactor (MBBR) process is prepared. The hard slow-release carbon source is added into the components, so that supply capacity of a denitrification carbon source can be automatically matched under great fluctuation of the C/N ratio in wastewater, and total nitrogen removal efficiency can be ensured to be high and stable; and the ammonia nitrogen enriching agent is added, so that ammonia nitrogen in the wastewater is enriched around the filler, the contact and mass transfer efficiency of the ammonia nitrogen with a biological membrane are enhanced, and the total nitrogen removal efficiency is enhanced.

The invention discloses a process method of an MBBR (Moving Bed Biofilm Reactor) for treating urban sewage. The process method comprises the steps that suspended matters and part of organic matters in the urban sewage which is subjected to primary treatment are removed, then the urban sewage enters into an anaerobic zone, an aerobic zone and an anoxic zone of the MBBR in sequence by an intake sump, and enters into a secondary sedimentation tank through the anoxic zone; carriers are suspended in the anaerobic zone of the MBBR, and the surfaces of the carriers are attached with nitrobacteria, which is conductive to growth of the nitrobacteria with long sludge age, the organic matters can be subjected to degradation treatment by activated sludge in all zones, and phosphorus in the sewage is processed by the activated sludge, so as to realize simultaneous nitrogen and phosphorus removal. The process method disclosed by the invention has the characteristics that the effect of nitrogen and phosphorus removal is good and the utilization rate of organic matters is high, meanwhile, the sludge production is low, the nitrification liquid reflux does not exist, the operation cost is reduced, and the process method is particularly suitable for treating domestic sewage with low ratio of C/N.

The invention relates to a low-temperature treatment method of A/O/MBBR (Anaerobic/Oxic/Moving Bed Biofilm Reactor) municipal sewage. The low-temperature treatment method of A/O/MBBR municipal sewage is used for solving the problem of low nitrification efficiency of the existing sewage treatment method in north because autotrophic nitrifying bacteria are difficult to accumulate in a low-temperature system due to low multiplication rate. The low-temperature treatment method of A/O/MBBR municipal sewage is realized through the following steps of: 1, guiding the municipal sewage to a water inlet pool through primary treatment; 2, guiding the municipal sewage to an anaerobic pool; 3, guiding the municipal sewage to an aerobic I section; 4, guiding the municipal sewage to an MBBR system from the aerobic I section; 5, guiding the municipal sewage to a secondary sedimentation tank from the MBBR system; and 6, guiding the municipal sewage to a sludge hydrolyzing pool from the secondary sedimentation tank. The low-temperature treatment method of A/O/MBBR municipal sewage can be used for the field of winter sewage treatment engineering in northern cities.

The invention discloses a starting and running method for a shortcut nitration technology based on an MBBR (Moving Bed Biofilm Reactor) and belongs to the field of sewage treatment. The problems of difficult starting, unstable nitrite accumulation effect and low processing load in the original biochemical technology are solved. The method comprises the following steps: starting inoculation, starting the shortcut nitration of the MBBR and continuously running the shortcut nitration of the MBBR. Finally, the load of an ammonia nitrogen membrane side reaches more than 1.5 gN/m<2>/d, the nitrite accumulation rate stability is higher than or equal to 90%, and the requirement of follow-up denitrification or anaerobic ammonium oxidation on nitrogen is met. The method has the advantages of stable shortcut nitration effect, high ammonia nitrogen oxidation, occupied land saving, simple operation and reliable running. Compared with a traditional technology, the selection and the elimination of sludge can be realized, long-term running instability is prevented, the oxygen utilization rate is high, and aeration and fluidization energy consumption is low.

The invention discloses a campus sewage treatment device. The campus sewage treatment device comprises a grid well, an oil separator, a regulating tank, a primary settling tank, an anaerobic tank, ananoxic tank, an MBBR (moving bed bio-membrane reactor), an MBR (membrane bioreactor), a flocculation sedimentation tank, a sludge thickening tank, a sludge dewatering machine, a contact filter tank and a disinfection tank which are in series connection in sequence; the MBBR and the MBR effectively remove organic matters in water, strengthen the effect of nitrogen and phosphorus removal, and causethe effluent quality to be stable; and subsequent disinfection is carried out by adopting contact filtration and breakpoint chlorination to realize the deep purification of water, so that effluent isdischarged or recycled with standard level. The campus sewage treatment device provided by the invention has the characteristics of high removal and utilization rate of organic matters, good nitrogenand phosphorus removal effect, low sludge yield, good water discharge effect, convenience in operation and maintenance and the like, and successfully solves the problems of campus sewage pollution andwater resource wasting.

The invention discloses a biofilm culturing method for carrier packing in a moving bed biofilm reactor. The biofilm culturing method comprises the following steps: (1) adding activated sludge and ion exchange wastewater into the moving bed biofilm reactor containing the carrier packing, and then performing continuous aeration treatment for 1 to 2 days; (2) simultaneously performing water drainage and ion exchange wastewater supplement on the moving bed biofilm reactor, performing dynamic culture, and enabling the activated sludge to flow back; keeping pH (potential of hydrogen) in a reaction tank to be 7.0 to 7.5, and keeping an aeration state while the dynamic culture is performed until biofilm culturing is finished. The biofilm culturing method disclosed by the invention is fast in biofilm culturing, simple, and easy to operate; moreover, the biofilm culturing method has a good treatment effect, is capable of shortening domestication time, has wide practicability, and is a suspended packing biofilm culturing method suitable for high-concentration ion exchange wastewater.

The invention relates to a method for deep treatment on difficultly-degraded organic nitrogen-containing industrial wastewater and belongs to the field of industrial wastewater treatment methods. The method comprises the following steps of 1, putting a suspended filler into a moving-bed biomembrane reactor, carrying out biomembrane culture, after the biomembrane culture, inputting difficultly-degraded nitrogen-containing industrial wastewater subjected to biochemical treatment into the moving-bed biomembrane reactor, and carrying out treatment, wherein the moving-bed biomembrane reactor operates by continuous water feeding, continuous draining and continuous aeration methods, 2, inputting the wastewater treated by the moving-bed biomembrane reactor into a membrane bioreactor, wherein the membrane bioreactor is added with activated sludge and operates by the continuous water feeding, continuous draining and continuous aeration methods, and 3, through a cartridge filter, treating the wastewater treated by the membrane bioreactor, and then filtering the treated wastewater by a reverse osmosis device. According to recycle water demands, it is determined if the step 3 is adopted so that quality-classification recycle is realized.

The invention discloses an MSBR (Modified SBR) nitrogen and phosphorus removal technique based on an MBBR, and belongs to the technical field of sewage treatment. The technique is based on a system consisting of seven units, including a sludge concentration area, a hypoxic preconditioning area, an anaerobic area, an anoxic zone, an aerobic MBBR area, a sequencing batch reaction I area and a sequencing batch reaction II area, wherein suspended packing is all dropped into the aerobic MBBR area, a medium hole perforating aeration system is arranged at the bottom of the aerobic MBBR area, a water distribution system is arranged at a water inlet, and an interception screening system is arranged at a water outlet. According to the MSBR nitrogen and phosphorus removal technique based on the MBBR disclosed by the invention, the advantages of an MSBR technique and the MBBR technique are combined, the technique has the advantages of high volume load and stable effluent effect, and is suitable for carrying out update or capacity increasing transformation on the original MSBR technique, so that the treatment capability of the existing technique is promoted, and meanwhile, the technique is applied to new construction items, so that the occupied area can be greatly reduced.