62results about How to "Increase the concentration of microorganisms" patented technology

The invention relates to a method for treating solid wastes by culturing biological leachate by use of a membrane bioreactor, and belongs to the field of a solid waste resource treatment technology. The membrane bioreactor is applied to biological leachate culture and regeneration firstly and is used for the innocent and resource treatment of dangerous solid wastes. A group of membrane components is arranged in the bioreactor, and the metabolism and the growth of leaching bacterial strains are controlled through the adjustment of the aeration rate, the stirring speed, the concentration of nutrient substances and the like, when the concentration of the leaching bacterial strains is in a stable phase, water inlet and water outlet functions are started to enable the membrane bioreactor to be in a chemostat state, the leaching bacterial strains can be enriched by the interception action of the membrane, and the yield of the biological leachate is increased. The method can be used for effectively solving the problems that the leaching bacterial strains grow slowly, the biomass is low, the leaching efficiency is low, the leaching period is long and the like, has the beneficial effects of simpleness, high safety, energy conservation and wide application range, can be operated conveniently and is suitable for the innocent and resource treatment of different solid wastes.

The invention discloses a sewage treating device with a multiple water inlet point multi-grade bioflim reactor. N pieces of separating plates are vertically arranged inside a tank to divide the tank into N+1 reaction pools in series. The adjacent reaction pools are orderly communicated with the lower part to the upper part, wherein, the first N-1 grades are functioned with anaerobic and aerobic reaction alternately, every pool is provided with flexible assembled fillers; the N grad is the aerobic reaction area with flexible assembled filler, and the N+1 grad is the filtering and depositing area; a water inlet pipe is arranged at the top of the tank and is respectively communicated with the water inlet of the first N-1 grades, applying a water supply with multiple points; a water outlet pipe is led out of the upper part of the N+1 grade reaction pool; the bottom parts of the first N grade reaction pools are provided with an underwater aeration device, and the bottom part of the N+1 grade reaction pool is provided with a backwashing pipe. The bottom part of every pool is provided with a sludge discharge pipe. The treatment device has the advantages of great impact loading resistant ability, high treatment efficiency, low operation energy consumption, less left sludge, simple procedure, small land occupation, low investment and convenient operation.

The invention aims to disclose a device and a method for processing wastewater of cold-rolled leveling liquid. Floating oil in the levelling liquid wastewater is removed through a barrate oil receiving device; the dissolved or emulsified oil is removed through a high-efficiency CAF air floating pool, thereby having little investment and low operating expenses and saving occupied area; the water coming out from the CAF air floating pool enters an anaerobic treatment unit and an MBR membrane biological reaction unit; the water firstly passes through the anaerobic treatment unit, and the anaerobic treatment unit is used as pretreatment of an aerobic treatment unit, thereby avoiding the temperature problem met by aerobic treatment in the prior process and problems that certain organism can not be degraded under the aerobic condition, has overhigh load and impacts load and ensuring that aerobic outlet water is stable and meets the standard; the concentration of organism in the water can be reduced below 100 mg/LCODcr; and the treated water quality reaches first level standard stipulated by Integrated Wastewater Discharge Standard of People's Republic of China (GB8978-1996), thereby realizing the aim of the invention.

The invention discloses a treatment method for port chemicals wastewater. The method comprises the following steps: the oil separation-air floating treatment, the biological fluidized bed treatment, the anaerobic settling tank treatment and the ozone aeration biological filter integral device treatment. The port chemicals wastewater is retained for 1 to 3 hours in an oil separation tank; and the surface load of the oil separation tank is 0.8 to 1.5m/m.h. The hydraulic power is retained for 6 to 18 hours in a biological fluidized bed; and the gas-water ratio is 10-30:1. The hydraulic power is retained for 12 to 36 hours in an anaerobic settling tank. Then after the wastewater is retained for 1 to 2 hours in an intermediate regulation tank, 50 to 200 mg/L of ozone is added. After being oxidized by the ozone, the wastewater undergoes the biochemical treatment in the aeration biological filter; and the hydraulic power is retained for 6 to 12 hours in the aeration biological filter. The method realizes the miniaturization of equipment, reduces the floor space and energy consumption, and has stable treatment effect. The automatic control on the wastewater treatment process is easily realized and the personnel operation is simple, and the method has good industrialized application prospect.

The recycle method for railway washing sewage comprises steps shown below: (1) removing the seston in sewage by grid screen to flow into anaerobic hydrolysis pond; (2) acidifying the LAS in sewage and organic into micromolecular organic by anaerobic active sludge; (3) entering membrane bioreactor, oxidizing said organic into carbon dioxide and water totally by aerobic active sludge, and recycling the residual clear water with material less than intercept diameter. This method uses MBR as main body and has high efficiency with low cost.

The invention discloses a method used for realizing whole-course autotrophic nitrogen removing via anaerobic ammonium oxidation immobilization, and belongs to the field of sewage treatment. According to the method, polyvinyl alcohol is mixed with sodium alginate for anaerobic ammonium oxidation cell immobilization, and prepared anaerobic ammonium oxidation gelled pills are applied to a whole-course autotrophic nitrogen removing system. A device comprises a raw water tank, a biological decarbonizing reactor, a middle water tank, and a whole-course autotrophic nitrogen removing reactor. According to the method, the anaerobic ammonium oxidation gelled pills obtained via imbedded immobilization and partial nitrification sludge are delivered into the whole-course autotrophic nitrogen removing reactor, problems of anaerobic ammonium oxidation bacteria in the whole-course autotrophic nitrogen removing system that loss is easily caused, and anaerobic ammonium oxidation sludge activity is easily influenced by dissolved oxygen, are solved; the anaerobic ammonium oxidation bacteria are intercepted in the whole-course autotrophic nitrogen removing system by the immobilized anaerobic ammonium oxidation gelled pills, dissolved oxygen transmission is blocked, inhibition of the anaerobic ammonium oxidation bacteria in the immobilized anaerobic ammonium oxidation gelled pills by dissolved oxygen is not easily caused, stability is increased; and whole-course autotrophic nitrogen removing is realized.

The invention discloses a continuous enlarging cultivation device for mineral-bioleaching microorganisms. The cultivation device comprises a cylinder which is formed by sequentially connecting an upper cylinder body, a middle cylinder body and a lower cylinder body, wherein the upper cylinder body can collect feed liquid which is discharged due to overflowing, the middle cylinder body can continuously cultivate the microorganisms in an enlarged mode, and the lower cylinder body can collect discharged precipitates. A detachable multi-layer filler assembly is arranged in the middle cylinder body, the multi-layer filler assembly is composed of a multi-layer filler box and filler which is arranged in the filler box, a heater, a nutrient solution distributing plate and an aeration device are arranged below the multi-layer filler assembly, and the aeration device is arranged below the nutrient solution distributing plate. The cultivation device is simple in design, continuous cultivation canbe achieved, the concentration of the microorganisms in a mature bacteria solution can be improved, and while continuous production of the high-concentration bacteria solution is maintained, the problem about the loss of strains in a reactor is effectively eased. The cultivation efficiency of the mineral-bioleaching microorganisms is improved, and the device has the advantages of being safe, efficient, low in space occupation, low in power consumption, simple and easy in operation and capable of achieving combined cultivation of a plurality of cultivation devices.

The invention discloses a method for strengthening amino benzenes production wastewater SBR biological treatment with synthesized macroporous high-molecular polymer as immobilization microbe. For the drawback of the prior microbe carrier, the invention provides a kind of synthesized high-molecular polymer as immobilization microbe, and applies it to strength amino benzenes production wastewater SBR biological treatment. Compared with prior SBR technique, when microbe carrier used is 2-10% of active volume of the reactor, and the technique condition such as aeration volume, reaction time and temperature equals, with the method, the clearance of amino benzenes materials improves by 35-60% and the concentration of ammonia nitrogen in water outlet decreases by 5-15mg/ L. The invention can be applied for modifying the prior wastewater treatment device, or building new wastewater treatment device, having good economic profit and environmental benefit.

The invention discloses an A2O-D2 synergistic nitrogen and phosphorus removal technology and device. The device comprises an anaerobic pool, an anoxic pool, and an aerobic pool which are successivelyconnected. The technology comprises the following steps: after performing anaerobic, anoxic and aerobic treatments on municipal sewage, obtaining aerobiotic effluent; enabling a deoxidation pool to beembedded in the aerobic pool, and dividing the water outlet end of the aerobic pool to two parts, wherein one part is refluxed to the anoxic pool after entering the deoxidation pool for deoxidation,and the other part is directly flowed to a secondary sedimentation pool, and a volume ratio of the two parts is (2-4):1; and enabling the tail end of the secondary sedimentation pool to be connected to a sludge thickening pool, enabling concentrated sludge to be refluxed to the anoxic pool, and enabling supernatant liquid to be refluxed to the deoxidation pool. The technology is capable of, on thebasis of a current A2O technology, further improving the nitrogen and phosphorus removal effect of the secondary treatment, reducing the sewage treatment investment and the operating cost, providingan A2O-D2 synergistic nitrogen and phosphorus removal technology flow and technological design key points and design parameters thereof, and providing a design of a sewage treatment plant and a solution scheme of upgrading and reconstruction.

The invention relates to a combined type biological rotating disc sewage treatment device, and belongs to the field of biological sewage treatment devices. The combined type biological rotating disc sewage treatment device comprises a sewage pool, a settling pond, a water inlet tube, a biological rotating disc and a sterilizer, wherein the water inlet tube is arranged on one side of the sewage pool; biological zones are arranged inside the sewage pool; the biological rotating disc is mounted above the biological zones; the settling pond is arranged on the other side of the sewage pool; a dosing tank is arranged between the settling pond and the sewage pool. As the biological zones are combined with the biological rotating disc and are longitudinally distributed inside one pool body, relatively high microorganism concentration inside the sewage pool is maintained, the volumetric load is greatly increased, the combined type biological rotating disc sewage treatment device is relatively efficient and stable, the problems that a conventional biological rotating disc reactor is low in organic load, poor in treatment effect, poor in denitrification effect, low in oxygen utilization rate and poor in dephosphorization effect. Compared with a conventional biological zone biological contact oxidation method, the combined type biological rotating disc sewage treatment device disclosed by the invention needs aeration oxygen supply, and the operation cost is greatly reduced due to a rotation oxygen supply mode of rotating disc pieces of the treatment device.

The patent refers to the field of 'treatment of water, waste water, sewage, or sludge'. The invention discloses a negative pressure oxygenated pressure pipe type sewage treatment reactor, composed of two parts of negative pressure oxygenation and pressure pipe type reaction zone. Reactor water inflow is pressurized by a water pump firstly, and negative pressure oxygenation is carried out to carry massive oxygen into the pressure pipe type reaction zone. The reaction zone is composed of a plurality of pipe sections which are horizontally arranged, suspension filler is arranged in the interior, and a grating is arranged at the middle for separation. Meanwhile the water inlet pipe at the front end of pipeline is provided with a pressure regulating valve, so as to regulate and control pressure in the pipe, the top is provided with a vent valve, a safety valve and a filler feeding hole, the bottom is provided with a discharge pipe, the terminal is provided with a drain pipe, and the treated sewage is discharged to nearby water body. The treatment reactor integrates sewage conveying and treatment functions into a whole and has the advantages of good sanitary condition, strong impact load resistance, high treatment efficiency, low operating energy consumption, less residual sludge and simple process.

The invention discloses a swage disposal system for a ship and a disposal method of the swage disposal system. The sewage disposal system for the ship comprises an oil water separator, a precise filter, an ultraviolet sterilizing device, a resin adsorption system, an MBR membrane bioreactor, a liquid buffer tank and a membrane separator. The disposal method for the swage disposal system for the ship comprises the following steps: (1) sewage flows into the oil water separator; (2) the sewage enters the precise filter from the oil water separator to be filtered; (3) water flowing out of the precise filter enters the ultraviolet sterilizing device; (4) water flowing out of the ultraviolet sterilizing device enters the MBR membrane bioreactor; (5) water flowing out of the MBR membrane bioreactor enters the liquid buffer tank; (6) water flowing out of the liquid buffer tank flows to the membrane separator; (7) water flowing out of the membrane separator enters the resin adsorption system. The sewage disposal system is simple in structure and good in purifying effect.

The invention relates to a bacteria-immobilized hollow fiber polysulfone film for degradation of high concentration tetrachlorphenoxide, and a preparation method thereof. The film has an asymmetric three-layer structure, and is divided into an outer surface layer, a middle support layer and an inner surface later from the outer to the inner, wherein active carbon particles are uniformly distributed in each layer, the particle size is less than or equal to 10 mum, the specific surface area is 1104 m<2>/g, the dead volume is 0.92 cm<3>/g, the continuous phase of the film is transparent bisphenol A type polysulfone, the molecular weight is 100000-116500, and Pseudomonas aeruginosa is fixed in the surface of the film and the middle layer. After microbial immobilization is performed, the bacteria provide increased tolerance limitation for the high concentration toxic substrates so as to continuously grow. The degradation of the high concentration matrix by the immobilized bacteria mainly depends on protective effects on the bacteria by the hollow fiber film, such that the bacteria can grow so as to degrade the matrix.

A method for treating an organic and/or inorganic substrate utilizing a granular material made of a solid foam as support for an active component, for example a biocatalyst such as a microorganism or an enzyme. The solid foam has a continuous phase in which magnetizable particles are embedded, such that the support with the biologically active component immobilized thereon can be separated from a mixture with a magnetic separation device.

The invention discloses a method for treating recycled livestock and poultry breeding wastewater by the aid of forward osmosis membrane bioreactors. The method includes steps of arranging the livestock and poultry breeding wastewater in the bioreactors and carrying out biodegradation reaction under the condition that the concentration of activated sludge is 3000-7000 mg/L; separating the sludge from water in biologically treated raw material solution by the aid of forward osmosis membrane assemblies; transforming the raw material solution into clear water under filter effects of forward osmosis membranes and osmotic pressure effects and allowing the clear water to flow into draw solution tanks. The COD (chemical oxygen demand) concentration of the livestock and poultry breeding wastewater is 1000-5000 mg/L, the content of TN (total nitrogen) in the livestock and poultry breeding wastewater is 500 mg/L, and the content of TP (total phosphorus) in the livestock and poultry breeding wastewater is 100 mg/L. The forward osmosis membrane assemblies run in such two modes that active layers face draw solution or the raw material solution. The method has the advantages that the method is high in nitrogen, phosphorus and organic matter treatment efficiency, and recycling standards can be met by outlet water; forward osmosis procedures are low in energy consumption and little in membrane pollution, and accordingly the method is high in market competitiveness in the aspect of technological running cost.

The invention discloses a paper mill production wastewater treatment method. Wastewater sequentially goes through a pretreatment water collection pool, a grating, a sand basin, a physical filtering pool, an ice gate, an electromagnetic adsorption pool, an air floatation pool, an acidifying pool, a contact oxidation pool, a secondary sedimentation pool, a constructed wetland treatment system, a recirculation storage pool, a mud storage pool and a belt filter press. The low energy consumption and environmental protection ice gate is adopted in the invention, is used in the papermaking wastewater treatment process for the first time, and has obvious removal effects on small solid suspension and unique organic matters difficult to remove in papermaking wastewater without adding chemical reagents. In the papermaking wastewater treated through the method, the removal rate of chemical oxygen demand is 98.1%, the removal rate of total nitrogen is 97.2%, the removal rate of five-day biochemical oxygen demand is 95.1%, the removal rate of suspensions is 96.1%, the chroma removal rate is 90.1%, and the turbidity removal rate is 98.8%.

The invention relates to a disc multi-stage composite biological purification integrated process. The integrated process involves three modules, namely, the cascade disc module (3 stages), the rough filtration muddy water separation module and the fine filtration dephosphorization biochemistry module. Three-stage gradually-reducing pipelines of the cascade disc module serve as disc supporting bodies, biochemical treatment of sewage is achieved through a biological film formed through disc rotation, discs are arranged in a classified mode, biological phases are classified, biodiversity is increased, microorganism reproduction and organic matter degradation are facilitated, and meanwhile the nitration function and the dephosphorization function are enhanced; special filter cloth with the aperture of 5-20 micrometers replaces a sedimentation basin to conduct mud-water separation; dephosphorization agents are put, dephosphorization is enhanced through filter cloth with the aperture of 0.5-10 micrometers, the sewage discharge standard is improved to meet the reuse requirement, and meanwhile the energy consumption utilization rate is increased and technical units are integrated.

The invention discloses an up-flow anaerobic biological reaction/precipitator used for wastewater treatment. The up-flow anaerobic biological reaction/precipitator is rectangular in shape; an integrated structure of the up-flow anaerobic biological reaction/precipitator comprises a reaction zone, a water distribution zone, a settling zone, a water inlet and backflow system, a water outlet system, and a sludge and gas discharge system; the reaction zone is arranged at the lower part of the up-flow anaerobic biological reaction/precipitator; the settling zone is arranged at the middle of the upper part of the up-flow anaerobic biological reaction/precipitator; the bottom of the settling zone is provided with a water distribution/sludge backflow system; the water distribution zone is arranged between the reaction zone and the settling zone; the water inlet and backflow system is arranged in the reaction zone; and the water outlet system is arranged at the upper part of the up-flow anaerobic biological reaction/precipitator and on the diagonal corners. Up-flow reaction conditions can be obtained using the up-flow anaerobic biological reaction/precipitator, and are beneficial for biological reaction process mass transferring; biological reaction efficiency is increased; after biological reaction, wastewater is subjected to precipitation in the integrated settling zone, sludge obtained via precipitation is delivered back to the reaction zone, and it is beneficial for maintenance of microbial biomass.

The invention provides a biochemical reagent, which is prepared from solid phase spray and liquid phase spray by mixing spray reaction; the mass ratio of the solid phase spray to the liquid phase spray is 1:0.4-0.6; the solid phase spray is composite non-metallic minerals A (patent number 201310017703.0); the liquid phase spray comprises the following components in parts by weight: 5-15 parts of compound bacteria, 5-15 parts of nutritional agent and 0.05-0.15 parts of binder, wherein the compound bacteria are bacillus subtilis and photosynthetic bacteria of which the mass ratio is 1:4-6. The invention provides mixing spray reaction equipment used for preparing the biochemical reagent and a method for preparing the biochemical reagent by using the equipment. The biochemical reagent prepared according to the invention takes into account two aspects of microorganism loading capacity and substrate mass transfer resistance, low cost and long service life are realized, and thus, the biochemical reagent and the preparation method and application thereof can be used for treating polluted water bodies of a city and used for various water treatment engineering projects, and have a bright prospect.

The invention discloses a coal chemical industrial wastewater treatment system and a treatment process thereof. The coal chemical industrial wastewater treatment system comprises a raw water tank, an anaerobic tank, an aerobic tank and a membrane tank, which are sequentially connected, wherein coal chemical industrial wastewater sequentially passes through the anaerobic tank, the aerobic tank and the membrane tank after reaching the raw water tank through a lifting pump; an aeration device is arranged in the aerobic tank; a reflux circulation pipeline is arranged between the lower part of the membrane cell and the anaerobic tank; an activated coke addition system is arranged on the anaerobic tank, and a certain amount of activated coke is added into the anaerobic tank. The characteristic of developed mesopores of the activated coke in the wastewater treatment system can be fully utilized to achieve good adsorption effects on difficult-to-degrade organic matters, macromolecular organic matters and the like in the wastewater, and in addition, the activated coke can serve as a colloidal nucleus of activated sludge to improve the performance and water-bearing feature of the sludge and form a good water passage in the surface of a membrane to ensure membrane flux and prevent membrane pollution and plugging; moreover, the activated coke can be regenerated or mixed and hydrated with the sludge for blending combustion, so that the using cost is low.