185results 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 provides a method for biologically removing toxicity inhibition and intensively degrading typical medical organic wastewater under salt stress, and belongs to the technical field of sewage treatment. According to the method, efficient degradation of the high-salt medical organic wastewater is achieved by taking measures such as combination of salt-tolerant nascent-state functional flora and cofactor strengthening, the salt-tolerant nascent-state functional flora comprises obligate COD degradation anaerobic granular sludge and sludge domesticated by gradient salinity pressure of medical wastewater, and the cofactor is betaine, glutamic acid, trehalose or potassium chloride. According to the method, the anaerobic methanogenesis efficiency and TOC removal of organic matters in a degradation system under salt stress can be promoted, the inhibition effect of salt on flora can be relieved and broken through the addition of cofactors, effective metabolism of pollutant nitrogen heterocyclic rings and alkane substances is promoted, refractory characteristic components of wastewater are eliminated, and the biodegradability of the wastewater is improved.

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 discloses a wastewater treatment method based on improved wet oxidation reaction, which comprises the following steps: step 1, carrying out tempering modification treatment on wastewater, and preheating by adopting a multi-stage heat exchanger; 2, introducing the preheated wastewater and an oxidizing agent into a wet oxidation tower filled with a solid catalyst, and gradually heating to a required reaction temperature to carry out a wet oxidation reaction; 3, carrying out gas-liquid separation on a gas-liquid mixture flowing out of the wet oxidation tower, feeding the separated gas phase and liquid phase into the multi-stage heat exchanger in the step 1, carrying out heat exchange with the wastewater in the step 1, and preheating the wastewater to raise the temperature; and step 4, separating the cooled gas phase and liquid phase again, feeding the separated gas phase into the wastewater in the step 1 to carry out tempering modification on the wastewater, and further carrying out deep treatment or discharging the separated liquid phase. The method can effectively degrade organic pollutants in wastewater, and is low in energy consumption and operation cost and stable in process operation.

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 provides a sewage treatment test device and method based on ultrasonic enhancement. The device comprises a treatment pond, a stirrer is arranged in the middle of the treatment pond, one side of the upper end of the treatment pond is constructed to be an ultrasonic treatment area, the other side of the upper end of the treatment pond is constructed to be a liquid outlet, and a water outlet pump is arranged on the liquid outlet; the device further comprises an ultrasonic generator, the ultrasonic probe is connected with the ultrasonic generator and located in the ultrasonic treatment area, a backflow pipe is further arranged in the treatment pond and communicated to the ultrasonic treatment area from the bottom of the treatment pond, and a backflow pump is arranged on the backflow pipe. The influence and mechanism of ultrasonic waves on sewage treatment can be quantitatively researched, various settings of the ultrasonic waves in the sewage treatment can be quantitatively controlled, and the application effect of the ultrasonic waves in the sewage treatment is improved.

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 discloses a multi-membrane stack type electrolysis device for producing acid and alkali by using high-salinity organic wastewater, and relates to the technical field of high-salinity organic wastewater treatment.The multi-membrane stack type electrolysis device comprises a stack system, a direct-current power source system and a liquid path circulation system, and the stack system comprises an anode clamping plate and a cathode clamping plate; an anode plate is arranged at one end, facing the cathode clamping plate, of the anode clamping plate, a cathode plate is arranged at one end, facing the anode plate, of the cathode clamping plate, and a plurality of circulating stack units are arranged between the cathode plate and the anode plate; the circulating stack unit comprises a wastewater chamber partition plate, a cation exchange membrane, an alkali chamber partition plate, a bipolar membrane, an acid chamber partition plate, an anion exchange membrane, a wastewater chamber partition plate and a flexible double-electrode plate. Therefore, under the action of an external electric field, salt cations and salt anions in the wastewater are directionally migrated and respectively enter the alkali chamber and the acid chamber through the anion-cation exchange membrane, so that the purpose of recovering salt is achieved. Meanwhile, salt in the wastewater is removed, and organic matters are degraded, so that the subsequent biochemical treatment efficiency of the wastewater is 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 relates to the technical field of wastewater treatment and recycling, and discloses a sludge drying and condensing wastewater treatment and recycling system, which comprises an adjusting tank, a heat exchanger, a hydrolysis acidification tank, at least one A / O unit and an advanced treatment unit which are sequentially arranged along the flowing direction of sludge drying and condensing wastewater, wherein each A / O unit comprises an A / O reaction tank and a sedimentation tank, the A / O reaction tank comprises an anoxic tank and an aerobic tank, the anoxic tank, the aerobic tank and the sedimentation tank are sequentially arranged in the flowing direction of the sludge drying condensed wastewater, and a filler for attachment of microorganisms is arranged in the aerobic tank; the deep treatment unit comprises a three-dimensional electrolysis reactor, a secondary flocculation sedimentation tank and a catalytic ozonation reactor which are connected in sequence. According to the system, the three-dimensional electrolysis technology is applied to sludge drying condensation waste water treatment, the process treatment capacity is high, suspended solids, COD, ammonia nitrogen and total phosphorus in the sludge drying condensation waste water can be effectively removed, the equipment operation and maintenance cost is low, and the secondary pollution problem is few.

The invention discloses a maleic anhydride sewage treatment process and a sewage treatment system. The maleic anhydride sewage treatment process comprises the following steps: S1, carrying out buffer treatment on maleic anhydride sewage; s2, carrying out demulsification and multi-dimensional electro-catalysis pretreatment on the maleic anhydride sewage treated in the step S1; s3, carrying out anaerobic reaction treatment on the maleic anhydride sewage treated in the step S2; s4, performing neutral catalytic oxidation and aerobic treatment on the maleic anhydride sewage treated in the step S3; s5, performing electro-catalysis treatment on the maleic anhydride sewage treated in the step S4 to obtain sewage meeting the standard; the technical problems that in the prior art, the maleic anhydride sewage is high in pollutant concentration, low in biochemical treatment degradation speed and low in efficiency are effectively solved by removing specific pollutants such as DBP and DOP in the maleic anhydride sewage and adopting a method of demulsification, multi-dimensional electro-catalysis, efficient anaerobic treatment, multi-stage aerobic treatment, catalytic oxidation and electro-catalysis.

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 invention discloses a deep treatment method and system for fracturing flow-back fluid of an oil and gas field, and the method comprises the following steps: firstly, carrying out coagulation pretreatment on the fracturing flow-back fluid; adjusting the pH value of the fracturing flow-back fluid, wherein the pH value is less than 9; then, potassium ferrate or H2O2 and the potassium ferrate are adopted to conduct oxidation treatment on the fracturing flow-back fluid, and the molar mass ratio of the H2O2 to the potassium ferrate is 1: (1-3.5); treating the fracturing flow-back fluid subjected to oxidation treatment by adopting a sequencing batch bio-membrane reactor, and removing organic matters in the fracturing flow-back fluid; and finally, carrying out membrane filtration on the fracturing flow-back fluid by adopting a microfiltration membrane and a nanofiltration membrane in sequence. Based on an oxidation technology, a biological treatment technology and a membrane filtration technology in sequence, an efficient and economical fracturing flow-back fluid treatment scheme is constructed, and the oil content, the median particle size and the SS of treated effluent all meet the II-level water quality standard in Technical Requirements and Analysis Methods for Injection Water Quality Index of Clastic Rock Oil Reservoir (SY / T 5329-2022). Meanwhile, the first-grade standard of Integrated Wastewater Discharge Standard (GB 8978-1996) is met, meanwhile, the potential of treating and discharging the fracturing flowback fluid is achieved, and good practicability is achieved.

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.

An integrated sewage treatment device suitable for rural sewage belongs to the technical field of sewage treatment. The specific scheme is as follows: An integrated sewage treatment device suitable for rural sewage includes an inlet pipe, an anaerobic biochemical unit, an aerobic tank, a mud-water separation tank, a mud storage tank, a coagulation tank, a reaction tank, a sedimentation tank, a disinfection tank and an outlet pipe. Along the flow direction of the sewage, the inlet pipe, the anaerobic biochemical unit, the aerobic tank and the mud-water separation tank are connected in series in sequence, the lower mud area of ​​the mud-water separation tank is connected to the mud storage tank, the upper water area of ​​the mud-water separation tank is connected to the coagulation tank, the coagulation tank, the reaction tank, the sedimentation tank and the disinfection tank are connected in series in sequence, and the disinfection tank is connected to the outlet pipe. The sewage treated by the device described in the present invention can ensure that the effluent water quality meets the discharge standard of Class A of the Pollutant Discharge Standard for Urban Sewage Treatment Plants (GB 18918-2002).

The invention discloses a pharmaceutical wastewater treatment method, and relates to the field of wastewater treatment. Comprising the following steps: carrying out evaporation salting-out treatment on high-salt pharmaceutical wastewater in advance, adjusting water quality and water quantity of evaporation condensate water and general pharmaceutical wastewater in an adjusting tank, and precipitating in a primary settling tank; the wastewater enters a primary catalytic ozonation tank for oxidation treatment, enters a biochemical treatment procedure, enters a secondary sedimentation tank for sedimentation, and effluent enters a secondary catalytic ozonation tank for oxidation treatment and enters an activated carbon filter tank for treatment. Aiming at the characteristics of high salinity, high ammonia nitrogen concentration and high toxicity of pharmaceutical wastewater, the salt concentration is reduced by adopting evaporation salting-out treatment, and the biodegradability is improved by utilizing oxidation treatment of the first-stage catalytic ozonation pond, so that the subsequent biochemical treatment efficiency is high, and a large amount of organic matters are decomposed; and a secondary ozone catalysis tank and an activated carbon filter tank are subsequently adopted to remove residual pollutants in the wastewater, so that the COD (Chemical Oxygen Demand), ammonia nitrogen, total phosphorus, total nitrogen and suspended matter concentration of effluent are low, and the effluent can stably reach emission indexes.

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 invention discloses a method for promoting microalgae to produce biodiesel by using ozone to treat landfill leachate at low temperature, belongs to the field of microalgae bioengineering, and particularly relates to a method for promoting microalgae to produce biodiesel by using ozone to treat landfill leachate at low temperature. According to the invention, the current situation that the landfill leachate is difficult to biologically utilize is overcome, and the production of clean energy is realized. The method comprises the following steps: 1, inoculating microalgae into a culture medium, and culturing the microalgae to a logarithmic phase; 2, treating the landfill leachate by utilizing ozone; 3, inoculating the seed solution to the ozone-oxidized landfill leachate, adjusting the pH value, culturing to a logarithmic growth later stage, and centrifugally collecting algae cells; and 4, freeze-drying the algae cells, and extracting grease in the algae cells by adopting ultrasonic crushing in combination with an organic solvent. The biodegradability of biomass resources in the landfill leachate is improved through ozone oxidation under the low-temperature condition to promote microalgae to produce biological energy, the stress resistance of the microalgae under the low-temperature condition is improved, and microalgae biological energy production is promoted.

The system comprises an A2O tank, a secondary sedimentation tank, a sludge pump tank, a bacteria culture tank and a sludge storage tank, an outlet of the A2O tank is connected with the secondary sedimentation tank, an outlet of the secondary sedimentation tank is connected with the sludge pump tank, one outlet of the sludge pump tank is connected with the sludge storage tank, the other outlet of the sludge pump tank is divided into two pipelines, and the two pipelines are communicated with the bacteria culture tank. One pipeline is in reflux connection with the anaerobic zone of the A2O tank, the other pipeline is connected with the bacterium culture tank, and the outlet of the bacterium culture tank is connected with the aerobic zone of the A2O tank. According to the invention, through optimization and improvement of the A2O biochemical process system, the sludge is treated by the biological enhancement reactor, on the premise of keeping the biochemical treatment effect of the sludge unchanged, the generation of residual sludge is reduced from the source, and the subsequent sludge dewatering, transportation and terminal treatment costs are greatly reduced.

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.