116results about How to "High organic load" patented technology

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 single step pretreatment of wastewater or recreational water is provided comprising treatment with nanocomposites consisting of an anchoring particle such as a clay mineral and one or more polymers.

The present invention is generally directed to methods for reducing microbial population on food, especially seafood, during processing. Provided are methods of seafood processing that involve contacting seafood with a disinfection composition comprising an acid, a buffer, and an antimicrobial metal. Such methods can result in reduced pathogen load, reduced spoilage odor, and prolonged shelf-life of seafood. Also provided are systems for seafood processing employing said disinfectant compositions.

The invention discloses a filter tower packing for processing VOCs gas and malodorous gases. The filter tower packing is composed of a porous spherical shell and an inner packing, and the inner packing comprises, by volume, 40-50% of pine barks, 20-30% of bamboo charcoal, 5-10% of shellfish and 10-35% of polyurethane foam. The filter tower packing enables the filter tower to run efficiently and stably, has a wide application range, and is convenient for large-scale application and use.

The present invention is directed to compositions, methods, and systems for reducing microbial contamination in meat processing. In accordance with one aspect of the invention, disinfection composition and/or recycled disinfection composition comprising an acid, a buffer, and optionally an antimicrobial metal is applying to a carcass during at least one processing step of sacrificing, scalding, feather/hair/hide removal, eviscerating, and washing. Other aspects of the invention provide a carcass processing system comprising processing stations intermittently fluidly connected via a buffered acidic disinfection composition.

This invention relates to a biogas production wastewater treatment device and a cycle anaerobic reactor used in the device, which is used for environmental engineering. The device invented consists of a new self-cycle anaerobic reactor and a computer control system. The core self-cycle anaerobic reactor comprises two overlapping anaerobic reaction zones in series, wherein the upper parts of the two reaction zone are established gas-solid-liquid three phase separators respectively. The lower reaction zone is at an extreme high load, while the upper reaction zone is at low load. The three-phase separator sludge can be separated and returned to the main separator by the separator and biogas is collected. Internal reactor is capable of forming self-circle liquid, and can strengthen mass transfer process of organism and granular sludge and improve handling capability. The floor place of the three phase separator is small, high concentration of organic wastewater can be treated and biogas as biological energy can be produced. The device can achieve the scale biogas technology and automated production, and is an ideal scale wastewater treatment and gas production equipment.

The invention discloses a method for increasing organic load of anaerobic fermentation. In a digestive system of which the organic load is gradually increased, charcoal is quantitatively added to an anaerobic digestion system, the addition quantity of a fermentation substrate is gradually increased, and the load is increased. Experiment proves that along with the increment of the load of the anaerobic fermentation, the charcoal has obvious promotion effect on anaerobic fermentation. In a high-load anaerobic system, the charcoal can increase the methane generation rate, the digestion period canbe obviously shortened, the fermentability of the system is effectively improved, system rancidity is avoided, and the method has certain directive function on the engineering application.

The invention relates to a chemical industry wastewater comprehensive treatment method which comprises a pretreatment system, a primary biochemical system, an ozone treatment system, a secondary biochemical system and an after-treatment system. By adopting the two biochemical treatment systems, the iron carbon treatment system is arranged before the primary biochemical treatment system, and the ozone treatment system is arranged between the two biochemical treatment systems so as to greatly enhance the biodegradability of the wastewater, so that the treated wastewater can satisfy the direct discharge requirement. The method is suitable for comprehensive treatment of various types of chemical industry wastewater, has the advantages of low treatment cost, high technical stability, high pollutant removal rate, stable and standard effluent water quality and the like, and is suitable to be widely used in chemical industry wastewater treatment.

The invention belongs to the field of sludge resource treatment and relates to a dual-circulation two-grade anaerobic digestion system and application thereof. The anaerobic digestion system comprises a pre-treatment device (1), a first circulating system (2), a primary anaerobic digestion reactor (3), a second circulating system (4), a secondary anaerobic digestion reactor (5), a sludge mixing and preparing pool (6), a methane tank (7) and a sludge collecting pool (8), wherein the first circulating system (2) is arranged between the pre-treatment device (1) and the primary anaerobic digestion reactor (3); and the second circulating system (4) is arranged between the primary anaerobic digestion reactor (3) and the secondary anaerobic digestion reactor (5). The system provided by the invention is high in treatment efficiency, compact in structure, mutually matched in operation, stable in operation and suitable for being popularized and applied in large, medium and small sewage treatment plants.

The invention belongs to the field of sludge treatment and relates to a municipal sludge energy treatment system. The system comprises an acidogenic reactor and a methanogenic reactor; and first-level membrane separation equipment and second-level membrane separation equipment are arranged between the acidogenic reactor and a methanogenic reactor. The sludge passes through the acidogenic reactor and is hydrolyzed to generate acid in the methanogenic reactor, and then passes through the first-level membrane separation equipment to be separated into first concentrated solution and first penetrating fluid. The first concentrated solution reflows to the acidogenic reactor, and the first penetrating fluid enters the second-level membrane separation equipment to be separated into second concentrated solution and second penetrating fluid; and the second concentrated solution enters the methanogenic reactor to be fermented to generate methane. By organically combining the two-phase anaerobic digestion technology with the membrane separation technology, the municipal sludge energy treatment system realizes the combination of a physical dialysis method and a kinetic control method and really realizes the separation of fermentative bacteria bacteria and methanogenic bacteria. Therefore, the bacteria in two phases can exert the maximum activity, and the operating stability and energy efficiency of the whole system are improved.

The invention discloses a novel up-flow anaerobic sludge blanket (UASB) for treating wastewater of a pig farm, which comprises a UASB reactor main body, a raw water tank, a heating and heat insulation system, a control cabinet, a water inlet system, a reflux system and the like. A bio-film filler fixed bracket is arranged in the reactor, a bio-film filler is arranged on the filler fixed bracket, and the operation of the whole reactor is controlled through an electromagnetic metering pump. The reactor has the characteristic of simultaneously degrading organic substances and ammonia nitrogen, and is suitable for automatic control of the whole process.

The invention belongs to the field of water treatment, and relates to a method for treating sewage by using a biological membrane and equipment thereof. In the method, a biological membrane carrier is adopted and floats on the water, and a material having capillary water absorption function is used as a medium for connecting the biological membrane carrier and a water body environment under the water. The pre-cultured mature biological membrane can be suspended above the water, and microbial strains can be transferred to the carrier to perform culture and enrichment by using the medium with strong capillary water absorption effect. Therefore, the formed biological membrane is directly contacted with the air, so the transfer speed of oxygen is high, soluble pollutants in the water are continuously transferred, and the technique of suspending the capillary mass-transfer biological membrane can fully meet the aerobic biodegradation of the high-concentration pollutants and belongs to a technique of naturally strengthening the aerated biological membrane. The method for treating the sewage by using the biological membrane has the advantages of high organic load, low oxygen supply cost, easy construction and management, flexible application and the like; and the method can be applied to in-situ treatment of polluted rivers, and can effectively and constantly perform sewage purification.

The invention discloses a device and method for strengthening treatment of anaerobic sewage by using solar energy, belonging to the field of purification of anaerobic sewage. The device for strengthening treatment of anaerobic sewage by using solar energy comprises an anaerobic reactor, wherein a metal electrode plate is arranged in the anaerobic reactor, and is connected with a solar direct-current generating system. In the invention, the anaerobic reactor is externally connected with the solar direct-current generating system, novel active catalysis micro-electrolysis filling is added into the reactor through the electrode plate in a sludge area of the reactor after particle sludge is acclimatized, hardly-degradable matters are removed under the coaction of an electrode electric field, the filling and particle sludge microorganisms, and running of the reactor is particularly strengthened under the condition of low temperature, so that energy consumption can be lowered, the removal rate of the hardly-degradable matters can be effectively increased, and continuous and stable running of the reactor is kept. The device and the method are mainly suitable for biological strengthened treatment of high-concentration slightly-degradable waste water such as industrial waste water, garbage percolates and the like.

The invention relates to a method for simultaneously removing insoluble organic matter, total cyanogen and total nitrogen in wastewater of an industrial park. The method comprises the following steps: wastewater enters a high-efficiency coagulated decyanation reactor to remove total cyanogen in the wastewater removed from the coagulated decyanation reaction; effluent from the coagulating reaction enters an aeration biofilter, ammonia and nitrogen in the wastewater is oxidized into nitrate nitrogen or nitrite nitrogen, and partial organic matters are oxidized and removed; effluent from the aeration biofilter flows into a denitrification filter tank, and nitrate nitrogen and nitrite nitrogen in the wastewater are denitrified into nitrogen and removed; effluent from the denitrification filter tank is filtered in a V-shaped filter tank and then enters an ozone catalytic oxidation tank, and insoluble organic matters are oxidized into small-molecular organic matters or mineralized in the presence of a catalyst. The method can be used for oxidizing and degrading organic matters while removing total cyanogen and total nitrogen in the wastewater to ensure that treated effluent can be emitted in standard, thus having an excellent market prospect.

The invention belongs to the technical field of wastewater treatment and provides a high-protein wastewater treatment process. The high-protein wastewater treatment process adopts a mechanical grid, a regulating pond, a reaction pond, a flocculation settling pond, a hydrolysis acidification pond, a mixing pond, an EGSB reactor, an air-floated machine, a contact oxidation pond, a first settling pond, an active silt pond and a second settling pond. By means of the technical solution, the problems of poor high-protein wastewater treatment effect and high operation cost of a wastewater treatment process in the prior art are solved.

The invention relates to a nitrogen and phosphorus removal system for treating circulating cooling discharge water of a power plant, and belongs to the technical field of sewage treatment. According to the system, a carbon source and a deoxidant are added into circulating cooling discharge water with high-nitrogen, low carbon and high-dissolved-oxygen to keep an appropriate carbon nitrogen ratio and water intake dissolved-oxygen concentration; the sewage flows through a composite biofilter, denitrifying bacteria grow as a biofilm in the composite biofilter filling, nitrogen in a polluted water sample is removed by utilizing the denitrification effect, and the upper part of a biological filling region is aerated to carbonize residual organic matters; partial ammonia nitrogen and suspended solids in the sewage are synchronously entrapped by means of adsorption and filtration of multi-stage filter materials; a phosphorus removing agent is added into effluent of the composite biofilter, flocculated phosphorus enters an active sand filter, phosphorus is removed by filtering, and suspended solids can be further removed. The nitrogen and phosphorus removal system is applicable to a circulating cooling discharge water treatment engineering of a power plant and nitrogen and phosphorus removal deep treatment of other wastewater with similar qualities.

The high-efficiency water treatment method for aerobic cycle biological expansion bed comprises: using the distribution gas device on reaction tower bottom and light biological particle of aerobic bed to take water treatment to biological reaction with aerobic biological reaction tower as main; and controlling the flow rising speed in tower to achieve need expansion state. The opposite reactor comprises a biological reaction unit, a water cycle unit with a collection pond for output water and cycle pump, an aerobic bed unit. The advantages of this invention include: high organic load, short startup period and stable running.

The invention relates to an organic waste anaerobic digestion method. The method comprises the steps of adding organic waste, inoculum and a catalyst rich in high efficiency microorganisms to a reactor, and performing stirring for a reaction to generate methane. The catalyst adopts a magnet as a basal body and ferroferric oxide as a surface adsorber to enrich electrical activity microorganisms capable of realizing efficient anaerobic transformation of the organic waste and enable the microorganisms to be quickly combined with the ferroferric oxide on the surface of the magnet to form a biomembrane, the rate for generating the methane through anaerobic digestion is increased, the organic loading and the methane generating amount of an anaerobic digestive system can be increased, and the reaction period can be shortened. Compared with the prior art, the catalyst is used for enriching the electrical activity microorganisms capable of realizing efficient anaerobic transformation of the organic waste and enabling the microorganisms to be quickly combined with the ferroferric oxide on the surface of the magnet to form the biomembrane, the rate for generating the methane through anaerobicdigestion is increased, the organic loading and the methane generating amount of the anaerobic digestive system can be increased, and the reaction period can be shortened.

The invention discloses a granular sludge-containing microbial fuel cell device. The granular sludge-containing microbial fuel cell device comprises an anode chamber, a cathode chamber and a precipitation chamber, wherein holes are formed in the side wall of the anode chamber; the outer part of the side wall of the anode chamber is wrapped with an ion exchange membrane; the cathode chamber surrounds the anode chamber; a liquid outlet for discharging water into the precipitation chamber is formed in the top of the cathode chamber; a liquid distributor and anaerobic granular sludge are arrangedinside the anode chamber; and aerobic granular sludge is arranged inside the cathode chamber. The granular sludge-containing microbial fuel cell device not only can perform sewage treatment, but alsocan generate electricity through the action of microorganisms with wastewater as an energy source, so that comprehensive and reasonable resource utilization is achieved. The granular sludge-containingmicrobial fuel cell device adopts a simple and easily implemented operating method, is small in land occupation and low in investment, achieves continuous operation, can treat high-concentration organic wastewater, has very high pollutant removing efficiency, and has a broad engineering application prospect.

The invention discloses an ozone catalytic fluidized bed device for treating high-concentration organic wastewater difficult to biodegrade, and relates to sewage treatment technology in the field of environmental protection. The ozone catalytic fluidized bed device structurally comprises an organic wastewater conveying pipeline and a dissolved air water conveying pipeline which are used for beingconnected with a sewage storage tank, a sewage pressure pump, an ozone generation device, a dissolved air pump, a fluidized bed reactor and a plurality of control valves, a top dissolved air water distribution pipe is arranged at the top of the fluidized bed reactor and is communicated with a dissolved air water distribution head to convey dissolved air water; the invention also discloses a methodfor organic wastewater treatment. The method comprises the following steps: adding the organic wastewater into the sewage storage tank, starting the ozone generation device, and filling a catalyst atthe bottom of the fluidized bed reactor; at least one part of ozone generated by the ozone generation device is mixed with the organic wastewater and then is conveyed to the dissolved air pump to generate dissolved air water; gas-dissolved water enters the bottom of the fluidized bed reactor through a pipeline from the top gas-dissolved water distribution pipe to the gas-dissolved water distribution head and is in contact with the granular catalyst to generate a catalytic degradation reaction.

The invention discloses a modular bioecological unit for in-situ river regulation and sewage treatment. The modular bioecological unit comprises a modular biological unit and a modular ecological unitconnected together; the modular biological unit is arranged above the modular ecological unit when they are arranged in a river channel. The modular biological unit comprises a packing frame and a slow-release carbon-source packing unit packed in the packing frame, and the slow-release carbon-source packing unit comprises a carbon-source supporter and a slow-release carbon source packaged in thecarbon-source supporter. The modular ecological unit comprises floaters, water plants arranged on the floaters and buoys limiting moving of the floaters. The modular bioecological unit can enrich microorganisms effectively, provide a stable carbon source for eutrophication of water of rivers and lakes and microbial denitrogenation of sewage lack of carbon sources and the like, and realize quick construction of a biomembrane system.

The invention relates to a biomass high solid anaerobic digestion process for the separation and backflow of active sludge, which comprises the following steps of: 1, adding biomass into a high solid anaerobic reactor, and discharging after a reaction; 2, centrifuging the discharged materials by using centrifugal equipment, wherein after centrifugation is performed, an upper layer is a supernatant liquid layer, an intermediate layer is a sludge layer, and a bottom layer is a residual residue layer; 3, allowing the intermediate sludge layer to flow back to the high solid anaerobic reactor, and adding the biomass into the high solid anaerobic reactor; and 4, discharging after the reaction, and circularly performing the steps 2, 3 and 4. By the process, the problems of low loads, long retention period of hydraulic power, incapability of separating the retention period of the sludge from the retention period of microbes and the like in the anaerobic digestion process are solved, the high-load, high-stability and high-efficiency running of the biomass high solid anaerobic digestion process can be ensured, and the high-efficiency energy utilization of the biomass is realized.