88results about How to "Improve biodegradability" patented technology

The invention discloses a comprehensive treatment system and treatment method for industrial wastewater containing organic fluorine, electrocatalytic oxidation is carried out through an electrocatalytic oxidation reactor in a physicochemical treatment area, the toxicity of the wastewater containing fluorine is effectively reduced, chain scission is carried out on fluorine-containing organic matter macromolecules, the biodegradability of the wastewater containing fluorine is improved, and the treatment effect is good. The fluorine removal reaction sedimentation tank and the calcium removal reaction sedimentation tank are sequentially adopted to effectively remove most fluorine ions and excessive calcium ions, so that the fluorine ion concentration of the fluorine-containing wastewater reaches 10 mg / L, the biological reaction area and the rear fluorine removal guarantee area are arranged at the rear end, the fluorine ion concentration of effluent is further reduced, fluorine removal is effective, operation is easy and convenient, and the cost is low.

The invention provides a scattered wastewater centralized treatment method, and belongs to the technical field of sewage treatment.The treatment method comprises the following steps that S1, wastewater from various sources is classified and stored; s2, mixing in a reaction tank in proportion according to the type of the wastewater, then carrying out aeration stirring, and adjusting the pH to be acidic to obtain mixed wastewater; s3, carrying out iron-carbon micro-electrolysis treatment on the mixed wastewater to obtain treated wastewater, and enabling the treated wastewater to automatically flow into a sedimentation tank; s4, adjusting the pH value of the treated wastewater to be alkaline, then carrying out delayed aeration treatment, then carrying out coagulating sedimentation, and separating mud from water after the sedimentation is finished; s5, carrying out aeration stirring on the clear liquid, then introducing primary SAO3 ozone for catalytic oxidation, carrying out biochemical treatment by using activated sludge to obtain second treated wastewater, and carrying out sludge-water separation; s6, aerating and stirring the supernate, introducing secondary SAO3 for catalytic ozonation, and discharging into a buffer water tank; s7, the wastewater is cached in a discharge water tank, and sludge is packaged and subjected to outsourcing treatment after being subjected to gravity concentration; the method can be used for simultaneously treating various kinds of wastewater, and energy consumption and cost are remarkably reduced.

The invention relates to the technical field of wastewater treatment, in particular to a method for cooperatively treating petrochemical wastewater based on porous carbon and micro-nano bubbles, which comprises the following steps: S1, pretreating the petrochemical wastewater; s2, carrying out micro-nano aeration on the pretreated petrochemical wastewater by adopting a micro-nano bubble generation device to obtain aerated wastewater; s3, the aerated wastewater is subjected to adsorption treatment through modified porous carbon, purified wastewater is obtained, and the modified porous carbon is biomass porous carbon loaded with rose red ammonium tricarboxylate. According to the invention, through a cooperative treatment process of pretreatment, micro-nano bubble oxidation and modified porous carbon adsorption, efficient removal of multiple types of pollutants (including refractory organic matters, heavy metals and suspended particulate matters) is realized, the wastewater treatment efficiency is improved, and the operation cost is reduced.

The invention belongs to the technical field of wastewater treatment, and provides a method for realizing continuous degradation of pollutants under a low dosage based on a self-assembly induced carbon confinement material, which comprises the following steps: adding peracetic acid and a carbon confinement material into wastewater containing organic pollutants, treating the wastewater under a stirring condition, and in the wastewater treatment process, adding the peracetic acid and the carbon confinement material into the wastewater, the carbon confinement material activates peracetic acid to generate hydroxyl free radicals, organic free radicals, singlet oxygen and Co (IV) to degrade organic pollutants in the wastewater; the carbon confinement material is composed of a cobalt material and a nitrogen-doped carbon material coating the cobalt material, the cobalt material is composed of Co and CoO, and the carbon confinement material is nanoparticles with a core-shell structure. According to the invention, the high-efficiency utilization of the oxidizing agent peracetic acid can be realized under the condition of low-carbon confinement material dosage, the continuous degradation of micropollutants can be mediated, and the treatment cost of wastewater containing organic pollutants can be reduced.

The invention discloses a printing and dyeing wastewater treatment and deodorization device, and particularly relates to the technical field of wastewater treatment.The printing and dyeing wastewater treatment and deodorization device comprises a first shell, a second shell is fixedly connected to the right end of the first shell, a wastewater treatment assembly is arranged on the inner surface of the first shell, and an odor treatment assembly is arranged on the inner surface of the second shell. According to the printing and dyeing wastewater treatment and deodorization device disclosed by the invention, the filtering mechanism and the biological treatment mechanism are arranged, so that filtered impurities can be automatically cleaned in a preliminary filtering process of wastewater, and meanwhile, the wastewater flows along an S-shaped path during biological treatment, so that the wastewater can be always in a flowing state; according to the present invention, the retention time of the wastewater can be prolonged so as to prolong the contact time of the wastewater and the biological membrane, such that the microorganisms can completely degrade the organic matters in the wastewater, the treatment efficiency can be improved, the generated biological impurities can be effectively cleaned in the rotation manner, the permeability of the membrane can be maintained, and the wastewater treatment efficiency can be improved.

The invention relates to the technical field of industrial wastewater treatment, and discloses a wastewater treatment method in a carton printing production process, which comprises the following steps of: 1, filtering carton printing wastewater through a coarse grid and a fine grid in sequence to further remove particle suspended matters; 2, the filtered wastewater enters a regulating tank, the pH value of the wastewater is monitored through an on-line pH sensor, NaOH or H2SO4 is accurately added through an automatic control system according to the monitoring result, the pH value is regulated to 6-8, and the retention time of the wastewater in the regulating tank is controlled to be 6-8 h. Through multi-stage grid filtration and micro-electrolysis pretreatment, suspended particles and macromolecular organic matters in the wastewater are effectively removed, the load of a subsequent unit is reduced, meanwhile, the biodegradability of the wastewater is improved, favorable conditions are provided for subsequent biological treatment, the overall treatment efficiency is remarkably improved, and the risks of system blockage and equipment maintenance are reduced.

The invention discloses an advanced treatment system and method for high-concentration nitrogen-containing organic wastewater, and the treatment system sequentially comprises an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a sulfur autotrophic denitrification filter tank and a limestone filter tank, a water passing hole is formed in the upper part of a wall body between the anaerobic tank and the anoxic tank, a hollow aeration fiber membrane assembly is arranged in the anoxic tank, an aeration pipe is arranged at the bottom of the aerobic tank, a mixed liquid reflux pump is arranged at the bottom of the aerobic tank in a penetrating manner and is connected with the anoxic tank through a pipeline, and the aeration pipe is connected with the anoxic tank through a pipeline. A sludge reflux pump penetrates through the bottom of the secondary sedimentation tank and is connected with the anaerobic tank through a pipeline. Iron-carbon micro-electrolysis is intervened in the anaerobic reactor to achieve the purposes of improving the biodegradability of high-concentration degradation-resistant wastewater and enhancing biochemical treatment, and the nitrogen removal mode of anaerobic section MABR bubble-free aeration synchronous nitrification and denitrification is organically combined, so that the system treatment load and the activated sludge utilization rate are improved.

The invention relates to a pre-fermentation method for improving biogas production of straws and a biogas production fermentation system. The pre-fermentation method comprises the following steps: S1, preparing a mixed microbial agent to be fermented; the mixed microbial agent is prepared by inoculating the following zymophyte in parts by weight into a fermentation culture medium according to the total inoculation amount of 3-10% (v / v): 5-50 parts of bacillus subtilis, 10-20 parts of white-rot fungi, 5-10 parts of aspergillus oryzae, 5-10 parts of trametes versicolor and 5-10 parts of trichoderma viride; s2, uniformly mixing the mixed microbial agent with the micro-nano bubble water, and fermenting to form an enhanced hydrolysis bacterium solution containing a microbial agent fermentation solution and an enzyme solution; s3, spraying enhanced hydrolysis bacteria liquid onto the straws for enhanced hydrolysis so as to complete pretreatment before fermentation and biogas production; wherein the volume of the reinforced hydrolytic bacteria liquid required by each kg of straw is 3-5L. Compared with the prior art, the mixed microbial agent and the micro-nano bubble water are used for carrying out cooperative treatment on the straw, so that the gas production efficiency and the methane production amount of the straw can be effectively improved.

The invention discloses zero-valent iron shell reinforced microbial immobilized particles as well as preparation and application thereof, and belongs to the technical field of wastewater treatment. According to the preparation method, anaerobic digestion bacteria and a zero-valent iron reinforced material are embedded in porous organic gel formed by cross-linking polymerization of polyvinyl alcohol or sodium alginate in a layered manner, so that stress of an external poor water quality environment and the zero-valent iron material on microorganisms is reduced; in the prepared zero-valent iron shell reinforced microbial immobilized particle, the shell containing the zero-valent iron can protect microorganisms from being disturbed by external adverse environmental conditions, the environmental adaptability of the microorganisms is improved, and meanwhile the biological activity of the microorganisms in the porous inner core is reinforced; on the other hand, the biological toxicity of the zero-valent iron material to microorganisms is reduced, and the broad-spectrum applicability of the zero-valent iron is improved.

The invention discloses a pulse electrochemical crystallization coupled composite constructed wetland system which comprises an energy system, a pulse electrochemical crystallization pond and a composite constructed wetland system, and the energy system supplies energy to the pulse electrochemical crystallization pond and the composite constructed wetland system. Aquaculture wastewater firstly enters a pulse electrochemical crystallization pond, struvite (MAP) sediment is formed through electrochemical crystallization, ammonia nitrogen and phosphate in the wastewater are efficiently removed, and partial removal of organic matter is achieved. Then the wastewater enters a composite artificial wetland system, and the wastewater is deeply purified under the action of filler filtration / adsorption, microbial assimilation / conversion and plant absorption. The pulse electrochemical crystallization coupled composite constructed wetland system is compact in structure, and the defects of high energy consumption of direct-current electrochemical crystallization and low purification efficiency of a traditional constructed wetland are overcome through physical-chemical-biological multi-path coupling enhanced culture wastewater treatment.

The invention relates to a full-amount treatment system for low-carbon landfill leachate. The full-amount treatment system comprises a pretreatment unit, an anaerobic treatment unit, an external membrane bioreactor unit, a nanofiltration unit and a reverse osmosis unit which are connected in sequence, the external membrane bioreactor unit comprises a denitrification reactor, a nitration reactor and an ultrafiltration membrane; effluent of the anaerobic treatment unit enters a denitrification reactor, effluent of the denitrification reactor enters an ultrafiltration membrane to generate concentrated sludge, and part of the concentrated sludge flows back to the denitrification reactor; produced water of the ultrafiltration membrane assembly enters a nanofiltration unit; the nanofiltration unit generates nanofiltration produced water, the nanofiltration produced water enters the reverse osmosis unit to be treated to generate reverse osmosis produced water, and the reverse osmosis produced water is discharged or recycled; the nanofiltration concentrated solution enters a nanofiltration concentrated solution treatment unit to be subjected to flocculent precipitation and oxidative degradation treatment, and generated water returns to the external membrane bioreactor unit from the second water tank; the reverse osmosis concentrated solution enters the reverse osmosis concentrated solution treatment unit to be subjected to oxidative degradation, precipitation separation and evaporative crystallization treatment so as to generate recycled evaporative condensate water. The device has the characteristics of excellent effluent quality and low energy consumption.

The invention discloses a method for electrochemically treating semi-coke wastewater based on a BDD electrode and application of the method, and the method comprises the following steps: S1, introducing the semi-coke wastewater into an oil removal section for oil removal to obtain semi-coke wastewater after crude separation; s2, introducing the semi-coke wastewater subjected to crude separation into an ammonia distillation dephenolization section, and sequentially carrying out deamination treatment and dephenolization treatment to obtain pretreated semi-coke wastewater; s3, the pretreated semi-coke wastewater is introduced into a BDD electrode anode chamber of an electrochemical oxidation section for electrolytic treatment, and electro-catalyzed semi-coke wastewater, acid liquor and alkali liquor are obtained; s4, alkalifying the semi-coke wastewater subjected to electro-catalysis by using alkali liquor, introducing the alkalified semi-coke wastewater into a biochemical section, and carrying out biochemical treatment to obtain wastewater meeting the discharge standard; the acid liquor and the alkali liquor in the step S3 are collected and used for acidification and alkalization treatment in the step S2 and the step S4. According to the method provided by the invention, the organic load of a biochemical system is reduced through electrochemical oxidation, and the BOD (Biochemical Oxygen Demand) in the wastewater is improved.

The utility model discloses an iron-carbon micro-electrolysis coupling bacteria-algae symbiotic reaction system for mariculture wastewater treatment, and aims to solve the problem that organic pollutants are degraded insufficiently due to filler hardening and passivation in long-term operation of the conventional single iron-carbon micro-electrolysis industrial wastewater treatment technology. According to the iron-carbon micro-electrolysis coupling algal-bacterial symbiosis reaction system, the aeration disc is arranged at the bottom of the algal-bacterial symbiosis reactor, iron-carbon filler is filled in the iron-carbon porous reaction box, the iron-carbon porous reaction box is arranged in the algal-bacterial symbiosis reactor, algae and aerobic bacteria are added into mariculture wastewater in the algal-bacterial symbiosis reactor, and the algal-bacterial symbiosis reactor is arranged in the algal-bacterial symbiosis reactor. A water outlet and a sludge outlet are respectively formed in the bottom of the side wall of the algal-bacterial symbiotic reactor; the water outlet is communicated with the water outlet tank through a water outlet pipe. According to the utility model, iron-carbon micro-electrolysis and algal-bacterial symbiosis are coupled, so that the removal efficiency of the algal-bacterial symbiosis system on refractory pollutants is improved, and the problems of hardening and passivation in the iron-carbon micro-electrolysis process are solved.

The invention relates to an advanced treatment method for Shuanghuanglian production wastewater for upgrading and reconstruction, which can effectively solve the problem that secondary effluent of an existing wastewater treatment process of a Shuanghuanglian production or pharmaceutical enterprise cannot meet the current sewage treatment comprehensive discharge standard. Comprising the following steps: 1) introducing effluent of a secondary sedimentation tank or an aerobic tank of an original process into an MBR membrane tank; 2) enabling effluent of the MBR membrane tank to enter a micro-nano bubble-ozone catalytic oxidation tower; 3) passing through a buffer pool and then entering a BAF (Biological Aerated Filter); and 4) finally passing through a fiber rotating disc filter tank to achieve the purpose of up-to-standard discharge. Micro-nano bubble-ozone catalytic oxidation is adopted to overcome the defects of weak oxidation capacity, low reaction rate, poor selectivity and the like of the traditional ozone oxidation technology in wastewater treatment, and the biotoxicity in wastewater treatment is effectively eliminated; the biodegradability and the effluent standard of the wastewater are improved, and the advanced treatment method for the Shuanghuanglian production wastewater is an innovation.

The invention discloses a nitrile rubber production sewage treatment process and device, and belongs to the technical field of synthetic rubber sewage treatment. According to the technical scheme, the sewage treatment device comprises a homogenizing tank, a two-stage air floatation tank, a high-density sedimentation tank I, a nitrile removal and cyanide breaking unit, an adsorption sedimentation tank, a hydrolysis acidification tank, a denitrification tank, an aeration tank, a secondary sedimentation tank, a denitrification filter tank, an engineering bacterium biological filter tank and a sedimentation filter tank which are sequentially connected through pipelines; the sewage treatment process comprises the following steps: 1) pretreating glue-containing sewage; the invention provides a nitrile-butadiene rubber production device sewage treatment method, which comprises the following steps of 1) nitrile removal and cyanogen breaking treatment, 3) biochemical treatment, and 4) sewage up-to-standard deep treatment.The nitrile-butadiene rubber production device sewage treatment method is safe and reliable in operation, can perform efficient denitrification and decarbonization treatment on all sewage in a nitrile-butadiene rubber production device area, enables the discharged sewage to reach the GB31571-2015 direct discharge standard, provides a tail gas discharge treatment scheme, and radically solves the problem of environmental pollution.

The utility model relates to the technical field of industrial wastewater treatment, in particular to a high-concentration ether industrial wastewater treatment system which comprises a mixed wastewater collection tank, a pretreatment system, a comprehensive regulation tank, a hydrolysis acidification tank, a biochemical treatment system and an ozone oxidation tank, the pretreatment system comprises a coagulation air flotation device, a multi-dimensional electro-catalysis device and an electrolytic sedimentation tank which are connected in sequence, the biochemical treatment system comprises an anaerobic treatment unit and an aerobic treatment unit which are connected in sequence, and the ozone oxidation tank is arranged behind the aerobic treatment unit. When the wastewater treatment system is used for treating ether wastewater, stable and up-to-standard discharge of effluent from a water outlet can be ensured, the wastewater treatment efficiency is high, and a novel and effective wastewater treatment method is provided for ether wastewater treatment; compared with a traditional incineration method for treating the high-concentration ether wastewater, the method has the advantages that the equipment operation cost is low, operation management is simple, equipment faults are not prone to occurring, and secondary pollution is small.

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.

The invention is applicable to the denitrification artificial wetland purification method of tail water of sewage treatment plant, and effectively solves the problems of low nitrogen and phosphorus removal capacity of wetland system and poor pollution purification effect in winter. The tail water of sewage treatment plant enters the biological enhanced clarification tank, and the cellulose carbon source slowly releases the biodegradable carbon source after soaking to improve the biodegradability, and the aquatic plants reduce the suspended matter; the tail water flows into the upward vertical subsurface flow artificial wetland, and the microorganisms attached to the inner surface of the mixed matrix deeply denitrify the tail water through denitrification, and the upper surface of the wetland is planted with emergent plants, and photosynthesis reoxygenation prevents the dissolved oxygen concentration in the tail water from being too low and stinking; the effluent of the vertical subsurface flow artificial wetland enters the surface flow artificial wetland, and the surface flow wetland is provided with a water level regulating water distribution pipeline, and the dissolved oxygen concentration of the water body is further guaranteed by waterfall reoxygenation, and the reducing matrix in the wetland degrades organic matter through internal electrolysis, and the effluent can be better than the surface water Class IV requirement, and the treatment effect is good, the operation cost is low, waste is turned into treasure, and the ecological landscape effect is good.

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.

The invention discloses a recycling treatment method of printing and dyeing wastewater. The method is used for treating boiling wastewater, bleaching wastewater, dyeing wastewater and washing wastewater which are respectively generated in a desizing boiling process, a bleaching washing process, a dyeing process and a washing process of textiles. The bleaching wastewater is subjected to second ultrafiltration treatment, a second ultrafiltration filtrate is introduced into a microbubble generation device to be treated and then reused in the desizing and boiling process, the boiling wastewater is subjected to first ultrafiltration treatment, a first ultrafiltration filtrate is subjected to first nanofiltration treatment, and a first nanofiltration filtrate is reused in the washing process. After the dyeing wastewater is subjected to second nanofiltration treatment, second nanofiltration filtrate is recycled to the washing process. The wastewater generated in the textile printing and dyeing process is subjected to resource utilization, water with different characteristics is subjected to corresponding treatment and then recycled to different process units, the effect of the desizing and boiling process can be enhanced, and resource utilization of the wastewater is achieved to the maximum extent.

The present invention relates to a sewage pretreatment tank and sewage treatment process, comprising a tank body and a grille slot arranged on the top of the tank body, the inner cavity of the tank body is divided by two partitions into a regulating area, a sand settling area and a mud storage area arranged in sequence in the horizontal direction, the grille slot is connected with a water inlet pipe and a sewage pipe, the lower end of the sewage pipe extends into the bottom of the sand settling area, and the two partitions are respectively provided with a plurality of water holes; it also includes a drainage mechanism connected with the regulating area and a mud inlet pipe connected with the mud storage area, the outlet end of the drainage mechanism is connected with a water outlet pipe, and the lower end of the mud inlet pipe extends into the bottom of the mud storage area; an aeration mechanism and a reflux mechanism are arranged in the mud storage area, and the output end of the reflux mechanism is connected with the regulating area and the sand settling area. The pretreatment tank of the present invention has a compact structure, low investment cost and good treatment effect, and can also play a role in hydrolysis and acidification, reduce subsequent biochemical load, and the internal mud storage area digests part of the sludge through micro-aeration, greatly reducing the amount of residual sludge, and preventing the release of phosphorus.

The utility model discloses a kind of leachate treatment devices of waste landfill, a kind of leachate treatment devices of waste landfill, including dilution pond, the dilution pond one end is fixedly connected with stirring assembly, and dilution pond is fixedly connected with first wave weir on the side close to stirring assembly, the side of stirring assembly is fixedly connected with drain pool, and the two inner walls on the side close to stirring assembly of drain pool are fixedly connected with second wave weir, the one end of drain pool is fixedly connected with drain pipe, the one end of drain pipe is provided with water pump. The utility model is provided with cylinder grating and scraper assembly, realizes the sustained cleaning of filter screen in leachate treatment process, effectively prevent mesh blockage, ensure the smooth flow of leachate, significantly improve processing efficiency;By being provided with stirring assembly, the way of mechanical stirring and pneumatic stirring is combined;By the rotation of stirring vane and the action of fine bubble, full-pool range is realized sufficient mixing.

The utility model relates to a wastewater advanced treatment device applied to an industrial park. The wastewater advanced treatment device comprises a water collecting tank, a regulating tank, a primary sedimentation tank, a two-stage A / O (Anoxic / Oxic) tank connector, a secondary sedimentation tank connector, a sludge return well, a coagulative precipitation tank, an intermediate water tank, a catalytic ozonation device, a BAF (Biological Aerated Filter), a backwashing wastewater tank and a clean water tank which are connected with one another. According to the device, the reliability of sewage treatment can be respectively controlled and ensured, meanwhile, the stability of sewage treatment can be improved, and the influence on the environment is reduced; the sewage treatment process can be flexibly combined, and meanwhile, the sewage treatment process can be optimized and adjusted according to different sewage treatment requirements. The device solves the problem of difficult-to-degrade COD (Chemical Oxygen Demand) in the wastewater in the industrial park, improves the B / C value, improves the biodegradability of the whole wastewater, can further remove organic matters and phosphorus in the wastewater, improves the wastewater treatment efficiency, and ensures that the high-difficulty wastewater in the chemical park is stably treated and reaches the national standard of class 4 water after upgrading.

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 invention discloses a method for preparing a biological carbon source by using waste emulsion, and relates to the technical field of organic waste liquid treatment. The method comprises the following steps: S1, pretreating the waste emulsion, and removing suspended solids and colloidal substances to obtain a clear and transparent material; s2, performing reverse osmosis treatment on the clarified and transparent material, so that the content of macromolecular refractory substances in effluent is less than or equal to 5%; and S3, carrying out vacuum denitrification treatment and breakpoint chlorination reaction on the reverse osmosis effluent in S2 to remove ammonia nitrogen, wherein the reaction product is the biological carbon source. The reverse osmosis treatment has a remarkable interception effect on macromolecules, so that the content of macromolecular refractory substances in effluent is less than or equal to 5%, the biodegradability of the material is improved, the vacuum denitrification method is used as a main technical means for removing ammonia nitrogen in the raw material, and the residual ammonia nitrogen is completely removed by using a break point chlorination method; and finally, the requirement as a biological carbon source is met.

The present invention discloses a method for preparing a copper-based electrode based on electroplating of a complex copper solution and its application. The method for preparing a copper-based electrode based on electroplating of a complex copper solution comprises the following steps: (1) loading boron nitride powder on a conductive substrate to prepare a boron nitride electrode; (2) placing the boron nitride electrode in a complex copper solution to perform an electroplating reaction, electroplating copper on the surface of the boron nitride to prepare a copper-based electrode. The present invention can improve the effect of electroplating copper, thereby improving the effect of electrochemical reduction to remove florfenicol.

The invention relates to a hydrogen peroxide production wastewater pretreatment method, and belongs to the technical field of wastewater treatment. The graphene oxide is used as a substrate material, some oxygen-containing functional groups such as hydroxyl, epoxy group and carboxyl are connected to the two-dimensional base plane of the graphene oxide, and the hydrophilicity is good. Carboxyl on graphene oxide and soluble ferric salt are subjected to a complex reaction under the high-temperature condition, the ferric salt covers the surface of the graphene oxide, graphene-loaded nano ferroferric oxide particles are synthesized, the agglomeration effect of nano ferroferric oxide can be reduced, the catalytic effect of nano ferroferric oxide is improved, the dosage of a catalyst is reduced, and the cost is reduced. In addition, a sulfonic acid-based ionic liquid is added in the process of synthesizing graphene nano ferroferric oxide, sulfonic acid groups are introduced into interlayers and the surface of graphene, and the introduction of the sulfonic acid groups increases the number of acidic active centers on the surface of the graphene, so that the catalytic activity, the selectivity and the reaction rate of the nano ferroferric oxide are improved; the catalytic oxidation effect is improved, and the wastewater treatment efficiency is improved.

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.