54results about How to "Increase the rate of biochemical reactions" patented technology

The invention discloses a multistage anaerobic wastewater treatment method which comprises steps as follows: wastewater, of which the CODcr is 2000-20000 mg / L and the pH value is 6-10, is pumped in from the water inlet of a multistage anaerobic wastewater treatment device and mixed with granular sludge on the bottom of the multistage anaerobic wastewater treatment device; the water inlet flow is adjusted to control the hydraulic retention time to 1-5 days; and the wastewater treated by the multistage anaerobic wastewater treatment device is discharged via the water outlet. The fluidized bed structure anaerobic region of the multistage anaerobic wastewater treatment device is in a completely-mixed fluidized state in the starting stage, thereby reinforcing the mass transfer effect between the particle sludge and wastewater, enhancing the biochemical reaction rate, accelerating the sludge granulation progress and greatly shortening the reaction starting time; and in the operating stage, the internal and external circulations of sludge-water mixture are implemented, thereby effectively eliminating the problems of short flow and dead spots, reinforcing the mass transfer effect and greatly enhancing the removal capacity of organic substances.

The invention relates to a method for treating industrial wastewater, in particular to a method for treating fermentative pharmaceutical wastewater. The method comprises the following steps of: inletting the pharmaceutical wastewater into a facultative pond; performing biochemical treatment on the pharmaceutical wastewater; and performing aerobic biological treatment on outlet water of the facultative pond by using a membrane bioreactor. The method is characterized in that: the concentration of activated sludge in the membrane bioreactor is 15,000 to 20,000 mg / L; the hydraulic retention time of the membrane bioreactor is 8 to 15 hours which is 1 / 2-1 / 4 of that of a conventional aerobic treatment process; a sludge return pump is arranged in the reactor; a sludge-water mixture in the reactor is returned to the facultative pond in a return ratio of 100 to 300 percent, so that the effect of treating persistent organic pollutant components in the fermentative pharmaceutical wastewater is improved; and a hollow fiber membrane module is used for replacing a secondary sedimentation tank to separate sludge and water. The method for treating the fermentative pharmaceutical wastewater has the advantages of less residual sludge, long sludge removing period, reduction of sludge treatment cost, simple operation, high automation degree and high capacity of resisting impact load.

The invention discloses an HEB compound biological preparation for high-difficulty organic wastewater treatment. The compound biological preparation comprises the following components in percentage by weight: 1% of yeast, 1% of fermented lactic acid bacteria, 1% of liquefied bacillus aceticus, 1% of denitrification alkali-producing bacteria, 1% of bacillus subtilis, 0.5% of Brevibacterium casei, 0.5% of Nitrosoccusnitrosus, 0.5% of Rhodopseudomonas palustris and 0.5% of Blastochloris. By putting the compound biological preparation into a high-difficulty organic wastewater treatment system, high-difficulty organic wastewater such as organic wastewater can be treated to meet the first class discharging standard in Integrated Wastewater Discharge Standard (GB8978-1996).

The invention discloses a wastewater biochemical treatment method, and specifically discloses a method for treating PVC (Polyvinyl Chloride) mother liquor by utilizing MBR (Membrane Bioreactor) technique. The method comprises the following sequential process schemes: carrying out anaerobic reaction treatment on the PVC mother liquor with PVA (Polyvinyl Alcohol)-containing degrading bacteria, wherein the anaerobic reaction temperature is controlled at 20-35 DEG C, the reaction time is controlled at 6-10h, and the dissolved oxygen is controlled at 0.1-0.2mg / L; degrading organic macromolecules into micromolecules so as to improve biodegradability; and then introducing anaerobic reaction effluent to the MBR for aerobic treatment so as to ultimately obtain clean water with COD (Chemical OxygenDemand) not more than 30mg / L, wherein bacilli is contained in the MBR. The method has the advantages that treatment cost is only needed to be invested at one time, and long-term and stable treatment can be realized by expending low maintenance cost and electric cost in the following years; the longer the use time is, the lower the average treatment cost of per ton of wastewater is; and the methodcan be widely applied to sewage treatment enterprises.

The invention relates to sewage recycling harmless treatment integrated equipment. A sewage biochemical treatment tower, a biological sand filter box and a biological activated carbon expanded bed are packaged into one pressure-bearing container and are separated into three sewage biochemical treatment units which can independently operate by virtue of conical and cylindrical separating plates, the three sewage biochemical treatment units are connected with a jet flow driving sequencing batch type biochemical reactor by virtue of a pipeline and a submersible sewage pump, the jet flow driving sequencing batch type biochemical reactor is connected with a biological contact filter chamber by virtue of a water decanter, the biological contact filter chamber is connected with the sewage biochemical treatment tower by virtue of a water pump and a jet flow gas mixing device, the sewage biochemical treatment tower is connected with the biological sand filter box by virtue of a water outlet valve of the sewage biochemical treatment tower, and the biological sand filter box is connected with the biological activated carbon expanded bed by virtue of a sand filter box water collecting pipe, a sand filter box water discharging pipe and a sand filter box water outlet valve. The sewage recycling harmless treatment integrated equipment has the advantages that sewage treatment recycling and harmless sewage treatment can be implemented, recycling of water source is realized, pollution of sewage to the environment is eliminated, and the water source is saved.

The invention provides a PSF-g-CS polymer microfiltration membrane. Polysulfone is used as a raw material, chloromethylated polysulfone, hydroxyl cycloenone polysulfone, hydroxyl cycloenone polysulfone alkylate and a PSF-g-CS polymer are sequentially prepared, and finally the PSF-g-CS polymer microfiltration membrane is prepared through electrostatic spinning. The microfiltration membrane is good in hydrophilic performance, high in membrane flux and strong in pollution resistance, the synthesis process is simple, and the industrial production is easy. The invention also provides a sewage treatment method based on the PSF-g-CS polymer microfiltration membrane, which combines a membrane technology, a flocculent precipitation technology and a microbial technology. The method has high sewage treatment efficiency, and the effluent completely reaches the discharge standard.

The invention discloses a mutated gene SsChi18A_1 of chitinase SsChi18A. A mutation site of the gene is k186A, a nucleotide sequence of the gene is shown in SEQ ID No.1. The invention also discloses application of the gene to preparation of the chitinase. An experiment proves that the activity of the mutated chitinase encoded by the gene is up to 84.2U / micro-mol, so that the activity of the mutated chitinase is increased by 55 percent in comparison with the activity of wild type enzyme; the mutated chitinase can bear a high temperature of 70 DEG C like the wild type enzyme, and is stable in abuffering system of which a pH value is 4 to 11; and the mutated chitinase has the characteristics of high activity and high temperature resistance, and can be applied to many fields of production ofoligosaccharide, preparation of protoplast, production processing of biopesticide, antifungal drugs, biological pesticides and the like.

The invention discloses an aeration sewage treatment pond, and relates to the technical field of sewage treatment. The aeration sewage treatment pond disclosed by the invention comprises a sewage treatment pond body and an aerator, wherein the aerator is composed of a water pumping motor, a suction pipe, a mixing chamber and an aeration head. The aeration sewage treatment pond is characterized in that the sewage treatment pond body is internally provided with an upright column, and the upright column is internally provided with a water pumping pipeline and a plurality of aeration pipelines; the plurality of aeration pipelines are arranged on the periphery of the water pumping pipeline, the lower end of the water pumping pipeline is provided with a multi-way suction head, and the aeration heads are connected to the bottom ends of the aeration pipelines; the multi-way suction head at the bottom end of the water pumping pipeline is positioned below the aeration heads, and a pipe port of a suction pipe is provided with a heating device; the aeration heads are long cylinder type aeration heads one ends of which are sealed, and the side walls of the aeration heads are also provided with a plurality of aeration holes. The aeration sewage treatment pond disclosed by the invention has the advantages that the aeration sewage treatment pond can effectively prevent sewage from eroding aeration equipment, the normal biochemical reaction of the sludge is also guaranteed under the condition that the air temperature is reduced in cold weather, and meanwhile, a condition that the sewage is efficiently processed is guaranteed.

The invention discloses a novel core-shell structured biological filler and a preparation method of the novel core-shell structured biological filler. The filler is prepared from the following raw materials in terms of mass percent: 20 percent to 30 percent of activated sludge, 0.2 percent to 1 percent of antibacterial deodorizing agent, 15 percent to 25 percent of bamboo charcoal powder, 2 percent to 5 percent of iron oxide red, 8 percent to 15 percent of calcium oxide and 35 percent to 50 percent of silicate inorganic gel. The method comprises the following steps of mixing the activated sludge, the antibacterial deodorizing agent and 15 percent to 35 percent of the silicate inorganic gel in total quantity, and squeezing, granulating and drying the mixed materials to obtain aggregates; uniformly mixing the bamboo charcoal powder, the iron oxide red, the calcium oxide and the residual silicate inorganic gel to obtain a powder material; putting the aggregates onto a ball forming disk, and spraying the powder material and water at the same time along with the process of rotating the ball forming disk, wherein the water spraying quantity is 5 percent to 20 percent of the total mass of the raw materials; gradually wrapping the surface of the aggregates by utilization of the powder material so as to obtain a preliminarily-cured core-shell filler, and obtaining the novel core-shell structured biological filler after curing. The filler disclosed by the invention has the advantages of short biological startup period, strong acid / base buffering capacity and rapid biochemical reaction rate.

The invention discloses a planting-type monomer solid-base ecological revetment system, which includes at least one ecological revetment unit, the unit includes a primary settling reaction zone and a solid base carrier zone connected above it and wet plants, and the primary settling reaction zone includes The water inlet cavity, the water inlet pipe and the vent pipe, the far end of the water inlet pipe is connected to the urban drainage pipe, the near end is set in the water inlet cavity, the upper end of the vent pipe is connected to the atmosphere, the lower end is connected to the water inlet pipe, and the bottom of the water inlet cavity A mud storage tank is set, and the base-fixing carrier area is a semi-closed cage, which is filled with a light first biofilm matrix, and wet plants are rooted in the base-fixing carrier area. The system protects the river bank, and at the same time, it can filter and purify the initial rainwater of the diversion system and the mixed sewage of the mixed rain and sewage discharged from the outlet along the river. The wet plants planted have the function of making the river safe and stable. It is an engineering module with certain flexibility and integrity, easy to assemble and disassemble, and easy to manage.

The present invention discloses one kind of sewage denitriding process, and the sewage denitriding process includes the steps of denitrifying, depositing, oxycarbonizing, re-depositing and nitrifying. The present invention separates the aerobic section into the oxycarbonizing step and the nitrifying step, and this creates suitable habitat for both heterotrophic bacteria and autotrophic nitrifying bacteria and biochemical reaction in high speed. There is no mixing of sludge of different steps, and this can ensure the high activity of active sludge. The process of the present invention is suitable for treating high COD and high ammonia nitrogen sewage, especially sewage from public latrine. Compared with A / O process, the process of the present invention has the advantages of low power consumption, small covered area and high denitriding efficiency.

The invention relates to a SBR bio-processing device and process for nitrogen-containing waste water, used for deep processing of industrial waste water, where an SBR reactor connects with a water inlet pipe, a water outlet pipe, a carbon source feeding pipe, and an aeration pipe; the water inlet pipe connects with a water inlet pump; the aeration pipe connects with a fan; there are blender, DO sensor, ORP sensor and pH sensor arranged in the reactor; the sensors are connected with a computer; the computer connects with a process controller; relays of the process controller are connected with valve, carbon source feeding pump and blender, respectively. And the process comprises water feeding, aeration, adding in original sewage and blending, adding in external carbon source and denitrifying, depositing, draining water, and putting aside, and is characterized in real-timely controlling aeration quantity and reaction time of SBR denitrifying process by process control parameters. And it can raise biochemical reaction rate and reduce reaction time and save cost.

The invention relates to a method for preparing a micro magnetic carrier, the micro magnetic carrier and an active sludge immobilization method. The method for preparing the micro magnetic carrier comprises the following steps of: adding 10 to 50g / L of Fe3O4 particles into a polyvinyl alcohol solution, stirring, and adding a glutaraldehyde solution, concentrated hydrochloric acid and a sodium alginate solution for reacting; and washing with acetone, ethanol or distilled water, drying, and thus obtaining the micro magnetic carrier using the magnetic Fe3O4 particles as a core for wrapping a polyvinyl alcohol layer. A sequencing batch reactor technology is used in the active sludge immobilization method using the micro magnetic carrier as a core, the inoculation medium consists of the micro magnetic carrier and conventional sewage in a mass ratio of 1:1-1:3 and is used for secondary bio-treatment of active sludge, and the concentration of the inoculated active sludge is 2 to 4g / L (mass of the dry sludge / effective volume of a reactor); and the operating mode comprises water feeding, anaerobic stirring, aerobic aeration, settlement, drainage and standing. The invention has the advantages of quickening the biochemical reaction rate of dirt degradation and improving the treatment efficiency and the treatment effect of the sewage.

The invention belongs to the technical field of battery hydrogen production, and relates to a liquid-solid fluidized bed microbial fuel cell hydrogen production device. The bottom center of the device is provided with a sewage inlet, a sewage outlet is formed at the top of the side wall of an anode fluidized bed, and the upper part of the sewage inlet is provided with a pre-distribution chamber and connected with the anode fluidized bed through a flange; a liquid distribution plate is arranged between the pre-distribution chamber and the anode fluidized bed, and fluidized granules are filled in the inner lower part of the anode fluidized bed; a positive electrode of a graphite carbon rod is vertically placed inside the anode fluidized bed, one end of the bottom of the positive electrode is inserted into the fluidized granules, and the other end of the positive electrode and a carbon paper membrane cathode are connected through a welding lead and connected in series with a load and a stabilized voltage supply to form a closed loop; and 2 to 10 test ports are arranged vertically on the lower middle part of the side wall of the anode fluidized bed of organic glass in equal distance, and the side wall of the top of a cathode chamber is provided with a gas collecting outlet. The device has the advantages of low battery cost, high power generation performance, wide operating area, reliability in operation and good mass transfer effect of the anaerobic fluidized bed.

The invention discloses a method for producing an organic fertilizer from agricultural waste, relates to a method for producing a fertilizer, in particular to a method for producing a bio-organic fertilizer by utilizing agricultural waste, and aims to provide a method for producing an organic fertilizer from agricultural waste. The method is short in decomposition period, thorough in decomposition and good in particle size, the produced organic fertilizer can obviously improve crop yield. The method for producing organic fertilizer from agricultural waste comprises the following steps: adjusting carbon-nitrogen ratio, adjusting water content, adding fungicide, fermenting and granulating. The decomposition time is 7-9 d, and is greatly reduced, the decomposition is thorough, the produced product is good in particle size and convenient to apply, after the organic fertilizer is applied, the yield of the crop can be improved by about 30%. The method is used for the field of agricultural production.

The invention discloses a livestock and poultry wastewater treatment system and a treatment method using the system, and belongs to the treatment field of livestock and poultry breeding wastewater. The treatment system comprises a water yield regulating pond, an EGSB (Expanded Granular Sludge Bed) anaerobic reactor and a tower-type biological filtering pond which are sequentially connected in series, wherein a mechanical agitator is arranged in the EGSB anaerobic reactor; the partial effluent of the EGSB anaerobic reactor is sent to the bottom of the EGSB anaerobic reactor in a pump exhausting manner so as to perform internal reflux; the reflux water is controlled by controlling the opening / closing and the opening degree of the valve; the reflux water is fed into a water distributing pipe which is positioned at the bottom of the EGSB anaerobic reactor and connected with a water distributor after the reflux water propels an impeller to rotate via the mechanical agitator. According to the system and the method, the treated wastewater can meet the requirement of 'Discharge Standard Of Pollutants For Livestock and Poultry Breeding' (GB18596-2001); the capital construction cost and the operating cost of wastewater treatment are lowered.