18results about How to "Improve biodegradability" patented technology

This invention belongs to the field of pharmaceutical wastewater treatment technology, and particularly relates to an ultrasonic-coupled electrochemical pretreatment device and method for high-concentration antibiotic production wastewater. The device consists of an ultrasonic treatment first reactor, an electrochemical second reactor, and a flocculation sedimentation third reactor connected in series via pipelines. The first reactor is equipped with a wall-mounted ultrasonic transducer; the second reactor contains a stabilizing electrode and a sacrificial electrode, and multiple disc aerators are installed at the bottom; the third reactor contains an overflow trough, inclined tube packing, and an electromagnet. This invention can achieve efficient desorption and mineralization degradation of adsorbed antibiotics in suspended solids in production wastewater, reduce antibiotic and degradation product residues in flocs, and eliminate toxic effects on subsequent biological treatment processes.

This invention discloses a short-range pretreatment method for lithium battery production wastewater. The method involves adjusting the pH value of the wastewater, adding persulfate and ferrous sulfate to oxidize and remove NMP, and then adding polyacrylamide to the NMP-removed wastewater for flocculation. The rate gradient of the flocculation reaction is controlled, and nano-graphite is precipitated and separated to obtain pretreated lithium battery production wastewater. This method utilizes the reaction between nano-graphite and Fe... 2+ A co-activated persulfate oxidation method was used to oxidize NMP in lithium battery production wastewater, improving the removal rate and biodegradability of NMP. Based on this, nanofiltration graphite was used for flocculation and sedimentation separation. This method utilizes nano-graphite and Fe... 2+ The co-activated persulfate oxidation method was used to oxidize NMP in lithium battery production wastewater, improving the removal rate and biodegradability of NMP; and it also improved the flocculation and sedimentation separation effect of nanofiltration graphite, shortening the process flow and reducing energy consumption.

The utility model provides an organic cleaning wastewater biochemical treatment device capable of efficiently removing nitrogen and phosphorus. The organic cleaning wastewater biochemical treatment device adopts an innovative structure of a hydrolytic acidification coupled two-stage aerobic and MBR-TMF double-membrane system. The device is formed by sequentially connecting a wastewater regulating tank, a hydrolysis acidification tank, a primary aerobic tank, an anoxic tank, a secondary aerobic tank, an MBR membrane tank, a TMF circulating tank and a clean water tank in series, biological stuffing is arranged in the primary / secondary aerobic tank to realize organic matter degradation, and the MBR membrane tank realizes mud-water separation through an MBR membrane assembly. According to the utility model, through the cooperation of the MBR and the TMF, the TMF circulating pump returns a concentrated solution to the front end of the MBR to realize secondary degradation of pollutants, and the recovery rate of the system is increased by 15-20%; a'hydrolytic acidification + two-stage aerobic + anoxic 'biochemical unit is constructed, two-stage aerobic realizes dissolved oxygen gradient control through independent aeration, and a complete nitrification-denitrification system is formed by the two-stage aerobic unit and an anoxic tank.

The application provides a green, low-carbon and rapid chromium-containing wastewater treatment method, which is improved on the basis of traditional biogas residue and ferrous sulfate treatment of chromium-containing wastewater, introduces short-term micro-aeration technology, and produces unexpected results, which not only treats the chromium-containing wastewater in a green and low-carbon way, but also greatly speeds up the reaction progress. In the process, a certain thickness of biogas residue sediment layer is formed in the biochemical reaction tank, then ferrous sulfate is added, then chromium-containing wastewater and biogas liquid are added, and after standing for a period of time, micro-aeration is carried out, which accelerates the biochemical reduction of Cr(VI) in the chromium-containing wastewater, promotes the activity of microorganisms, and saves resources.

This invention relates to the field of wastewater treatment and discloses a device and method for the combined removal of heavy metals and antibiotics from wastewater. The device includes: a coagulation reaction zone, a pre-sedimentation tank, a high-efficiency sedimentation tank, an ozone distribution zone, an ozone oxidation tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, and a disinfection tank. The coagulation reaction zone is symmetrically and fixedly connected to one side of the pre-sedimentation tank, and the high-efficiency sedimentation tank is fixedly connected to the other side of the pre-sedimentation tank. This invention achieves rapid and efficient sedimentation of coagulated flocs through the combination of vertical and horizontal flow high-efficiency sedimentation tanks, removing heavy metals from wastewater in the form of precipitates. Furthermore, the advanced ozone oxidation process removes antibiotics, improves the biodegradability of the wastewater, and simultaneously disinfects the effluent, saving investment. In addition, the efficient solid-liquid separation of flat sheet membrane modules replaces the secondary sedimentation tank, effectively ensuring that the effluent is clear and meets standards.

The present disclosure relates to a lyocell material for a cigarette filter and a method of manufacturing the same, in which, by setting the optimal total denier range of crimped lyocell tow, which may realize filter properties equivalent to cellulose acetate (CA) currently used as a cigarette filter, the optimal processability for manufacturing a cigarette filter may be secured, and due to the excellent biodegradability thereof, environmental pollution factors caused by conventional discarded cigarette butts may be reduced.

The present application relates to a kind of industrial park multi-water kind wastewater integrated treatment system, it includes coarse grid pool, rotary grit system, adjusting pool, materialization reaction pool, hydrolysis tank, biochemical pool, two sedimentation tank systems, depth processing system, ozone contact tank and disinfection contact tank in series, wherein materialization reaction pool includes dosing stirring reaction zone, materialization pool flocculation zone and materialization pool sedimentation separation zone, and dosing stirring reaction zone can realize Fenton oxidation reaction to improve wastewater biodegradability, then wastewater is treated by biochemical pool, and each index is well treated, wherein the pre-anoxic zone in biochemical pool can reduce the influence of reflux sludge on anaerobic zone, internal reflux channel can recycle reflux sludge, then wastewater is precipitated and deeply treated by two sedimentation tank systems and depth processing system.The present application can guarantee that industrial park wastewater is stably discharged up to standard, and equipment can be realized according to wastewater situation Surpassing, while meeting the wastewater treatment requirements of large water volume and high dirt.

The utility model provides an ozonation separation treatment device for iron-containing organic complex wastewater, which relates to the field of wastewater ozonation equipment, and comprises a catalytic ozonation assembly, the catalytic ozonation assembly comprises an oxidation reaction tower and an ozone generator, the ozone generator is used for generating ozone, and the oxidation reaction tower is used for generating ozone. The oxidation reaction tower is used for providing catalytic reaction, a separation assembly is mounted on one side of the ozone catalytic oxidation assembly, and the separation assembly comprises a tank body, a conical hopper, a filter plate, a blow-off pipe, a blow-off valve, an overflow pipe and a liquid inlet pipe; under the joint cooperation of the ozone catalytic oxidation assembly, the separation assembly and the stirring assembly, not only can the ozone catalytic oxidation reaction be effectively carried out, but also particulate matters in the wastewater can be efficiently separated and discharged, so that the problem of residual particulate matters in the wastewater subjected to ozone catalytic oxidation treatment is effectively solved; the overall treatment efficiency is improved, and the normal operation of subsequent treatment equipment is protected.

This invention relates to the field of wastewater treatment technology, specifically to a papermaking wastewater treatment process based on mitigating sludge calcification, comprising the following steps: S1: pretreatment, S2: calcium separation treatment, S3: deep decalcification treatment, S4: deep treatment, S5: anaerobic biological treatment, and S6: recovery treatment. In this invention, the treatment agent added during the calcium separation treatment process achieves large-scale separation of calcium ions from the water in a gentle manner. Subsequently, in the deep decalcification treatment, a weakly acidic cation exchange resin is used for fine treatment. These two processes work synergistically to fundamentally and significantly reduce the calcium ion load entering the subsequent anaerobic biological treatment system, completely changing the conditions under which calcium carbonate deposits on the sludge surface in the biological treatment tank. This effectively solves the fundamental technical problem of reduced activity, decreased fluidity, and equipment scaling and clogging caused by sludge calcification.

The utility model relates to sewage treatment technical field, concretely is a sewage treatment integrated intelligent circulation system, including ground, the ground top is fixed with anaerobic tank, the anaerobic tank right -hand member is fixed with oxygen -deficient pool, the oxygen -deficient pool right -hand member is equipped with the aerobic tank, the aerobic tank right -hand member is equipped with the electric catalysis advanced oxidation ware, the anaerobic tank the oxygen -deficient pool the aerobic tank with the electric catalysis advanced oxidation ware right -hand member all are equipped with the filter box, each the filter box right -hand member is fixed with the delivery pipe, the anaerobic tank the oxygen -deficient pool with the aerobic tank top all are equipped with the sealing plate, the anaerobic tank the oxygen -deficient pool with the aerobic tank inside all are equipped with stirring and sensor network, the utility model discloses through the synergies of multistage biochemical treatment and electric catalysis advanced oxidation, has improved the removal efficiency of each kind of pollutant in hospital sewage greatly, and the system avoids the disinfection by -product produced by chemical disinfection method, reduces the secondary pollution to the environment.

The invention belongs to the technical field of the crossing field of nano biological materials and intelligent drug delivery systems, and discloses a dual-power liposome nano motor and a preparation method and application thereof, the dual-power liposome nano motor comprises liposome, metal nanoparticles and DNAzyme, the metal nanoparticles have catalase-like activity, and the DNAzyme has the activity similar to catalase. The metal nanoparticles and the DNAzyme are entrapped by the lipidosome. The dual-power liposome nano-motor provided by the invention is applied to tumor treatment, gene therapy regulates gene expression to inhibit tumor growth, chemodynamic therapy can destroy tumor cells through chemical reaction of drugs, and photodynamic therapy energy is transmitted to surrounding oxygen, so that the tumor cells are prevented from being damaged. According to the present invention, the three treatment modes are combined to form the complementary advantages, such that the treatment effectiveness is improved, and the occurrence of the adverse reaction is reduced; the singlet oxygen with the strong activity is subjected to the oxidation reaction with the nearby biological macromolecules, and the generated cytotoxicity can kill the cancerous cells; and the three treatment modes are combined together so as to form the complementary advantages, such that the treatment effectiveness is improved, and the occurrence of the adverse reaction is reduced.

The application discloses a process for treating dyeing wastewater by a membrane method, and comprises the following steps: pretreating the dyeing wastewater, including grating, adjusting pool, coagulation and sedimentation, and filtration, to obtain filtered wastewater; the filtered wastewater enters a security filter to be subjected to secondary filtration, to obtain secondary filtered wastewater; the secondary filtered wastewater enters an NXF membrane system, and the wastewater is divided into two streams, one of which is a concentrated solution which does not reach a set concentration, and the other of which is a permeate; the concentrated solution which does not reach the set concentration returns to a front end inlet to be subjected to filtration in the NXF membrane system again; when the concentration reaches the set concentration, the concentrated solution enters a concentration storage tank to be subjected to other treatment; and the permeate enters subsequent treatment. The application aims at solving the technical problem of poor treatment effect of dyeing wastewater.

This invention relates to the field of advanced wastewater treatment and biomass ash reuse, and discloses a method and system for removing trace pollutants from wastewater treatment plant effluent using biomass ash. The method is carried out in a system including an equalization tank, an ozone catalytic reaction tank, and a biochemical buffer tank, and includes: (1) introducing the effluent into the equalization tank for homogenization to obtain reclaimed water I; (2) introducing the reclaimed water I into the ozone catalytic reaction tank for ozone catalytic reaction to obtain reclaimed water II; (3) introducing the reclaimed water II into the biochemical buffer tank to contact with biofilm-coated microbial carriers for biochemical treatment to obtain effluent. The method provided by this invention can achieve efficient removal of trace organic pollutants from effluent, without the addition of chemical reagents, making it environmentally friendly and free from secondary pollution; at the same time, it can improve the biodegradability of the effluent.

The present application relates to a kind of water drop power generation promotes biological rotating disc degradation high-salinity wastewater system and method, belong to high-salinity industrial wastewater treatment and resource utilization field.The device is composed of two functional modules of water drop power generation system and biological rotating disc processing system, two are connected by wire and pipeline, high-salinity wastewater flows through water drop power generation system under the drive of gravity or lifting pump, utilizes the charge transfer effect generated when liquid drop and polytetrafluoroethylene plate and electrode contact, converts liquid drop kinetic energy into low-voltage direct current, input graphite electrode in biological rotating disc reaction tank through wire, forms low-intensity direct current electric field;Electric field is on the one hand through electrochemical stimulation effect to strengthen the metabolic activity of microorganism under high-salinity environment, on the other hand in-situ generates active oxidant on the electrode surface, synergistically degrades organic pollutants in wastewater;After power generation, water drop enters biological rotating disc reaction tank and completes biological treatment, and the effluent after treatment can be used as discharge water or recycled water source.

The invention discloses a linen fiber one-step degumming method based on hot alkali activated peroxydisulfate, and relates to the technical field of linen fiber treatment. According to the method, peroxydisulfate serves as an oxidizing agent, alkali metal hydroxide provides an alkaline environment, a hot-alkali synergistic activation system is constructed under the heating condition, and ABTS can be further contained in the activation system, so that peroxydisulfate activation is promoted, and the generation and utilization efficiency of active species is improved. According to the method disclosed by the invention, peroxydisulfate is synergistically activated by heat and alkali to generate oxidizing active species, and non-cellulose components such as lignin, pectin and hemicellulose are removed in combination with the hydrolysis effect of an alkaline environment on colloid components. The method provided by the invention is relatively simple in process flow, does not need to additionally add a metal catalyst, can realize removal of non-cellulose components in the raw flax in one-step treatment, and gives consideration to both fiber performance and whiteness improvement.

The invention belongs to the technical field of wastewater treatment, and particularly discloses a paraquat wastewater resourceful treatment method which comprises the following steps: placing pyridine production wastewater under a subcritical condition, taking air as an oxidizing agent, enabling pyridine and derivative organic matters thereof to react on the surface of a noble metal catalyst, and degrading the organic matters into CO2, N2 and water; adsorbing residual pyridine at normal temperature by using special resin; and treating by adopting a biochemical process, and discharging after reaching the standard. Adjusting the pH value of the paraquat production wastewater to be acidic; the method comprises the following steps: placing wastewater under a subcritical condition, degrading nitrogen-containing organic matters into CO2, ammonia and water, and removing most cyanide and paraquat; the ammonium chloride and the sodium chloride are separated by hot circulating evaporation, and the recovered ammonium chloride and the recovered sodium chloride meet the recycling standard. By adopting the paraquat wastewater resourceful treatment method disclosed by the invention, the problems that pyridine compounds are difficult to degrade, the biochemical inhibition property is strong, and salt and pyridine resources cannot be effectively recycled in paraquat wastewater treatment in the prior art are solved.

The application discloses a method for treating harmful algal bloom water by using an ultraviolet light in-situ reinforced enzymatic Fenton reaction system, which comprises the following steps: feeding the harmful algal bloom water into a reaction chamber, then adding glucose oxidase, glucose and green rust into the water in the reaction chamber, and applying ultraviolet light to the water in the reaction chamber to initiate a Fenton-like reaction, so that the harmful algal bloom water is treated, and the treated water is discharged from the reaction chamber. The method makes full use of the high-dissolved-oxygen environment of the harmful algal bloom water, combines the ultraviolet light with the enzymatic Fenton reaction system, controls the slow release of H2O2 in-situ, improves the types and quantity of oxidizing active substances, and improves the catalytic capacity of the enzymatic Fenton reaction system by using the ultraviolet light, so that the algae is removed in the natural water environment in a mild and efficient manner, the integrity of the algae cells is maintained to the maximum extent, and the release of intracellular organic matters is avoided.

The invention discloses a treatment system and method for photoelectrocatalytic degradation of degradation-resistant organic matter wastewater, and belongs to the field of environmental electrochemical engineering. The system comprises a pretreatment unit, a photoelectric catalytic reaction core unit and a post-treatment unit. A core unit innovatively adopts a three-dimensional porous composite photo-anode and a gas diffusion cathode, so that the problems that a catalyst is easy to lose and inactivate due to pollution and the utilization efficiency of the catalyst and light is low are effectively solved. According to the treatment method, after the pH value of the wastewater is regulated and controlled, under illumination or additional bias voltage, hydroxyl radicals are generated by cooperating with photoelectric oxidation, and a Fenton-like reaction is initiated by in-situ production of hydrogen peroxide by a cathode, so that high-efficiency removal of refractory organic matters is realized. The process technology is simple, the system operation is stable, the energy consumption is low, the secondary pollution is less, and the method is suitable for pretreatment or advanced treatment of Baijiu with different concentrations and different turbidity or other wastewater.