77 results about "Biosorption" patented technology

The invention belongs to the technical field of soil fertilizers, and particularly relates to a soil conditioner and a preparation method thereof. Wherein the soil conditioner is prepared from the following raw materials in parts by weight: 30 to 40 parts of modified charcoal, 20 to 30 parts of microbial complexing agent, 15 to 25 parts of humic acid and 1 to 5 parts of biological enzyme; according to the microbial complexing agent, dopamine grafted and modified nano silicon dioxide and hydroxyapatite form a composite shell, pseudomonas aeruginosa and bacillus subtilis are wrapped, and the microbial complexing agent has the functions of protecting microorganisms, adsorbing heavy metals and slowly releasing phosphorus elements; the modified biochar is compounded with the attapulgite through acid-base treatment to form a porous structure with physical inlaying and chemical functional groups synergistic, so that the adsorption and fixation capability on heavy metals and organic pollutants is remarkably improved; the biological enzyme accelerates organic phosphorus conversion, and enzymatic hydrolysate provides a phosphorus source for microorganisms, promotes microorganism breeding, effectively increases the content of available phosphorus in soil, and enhances the stability of a remediation system.

The utility model relates to the technical field of enhanced pretreatment devices for organic wastewater, in particular to an enhanced pretreatment combined device for refractory high-toxicity organic wastewater in a chemical industry park. Comprising a toxic organic wastewater oxidation reaction device, a toxic organic wastewater adsorption device, a toxic organic wastewater efficient precipitation device, an automatic ozone generator system, an automatic hydrogen peroxide dosing system and an automatic sodium hydroxide dosing system which are sequentially connected, the system comprises a toxic organic wastewater lifting system, an active agent adding system, an odor treatment system, a biochemical treatment system and a sludge treatment system. According to the method, at the front end of biochemical treatment, refractory or high-toxicity wastewater in a chemical industry park is pretreated, and the purposes of improving the biodegradability of the wastewater, reducing the toxicity of the wastewater under the combined action of physical and chemical adsorption and biological adsorption and ensuring the stability of a subsequent biochemical system are achieved through the enhanced pretreatment combined action of oxidation, adsorption, coagulating sedimentation and the like.

The invention relates to the technical field of sewage defluorination, and discloses a sewage defluorination method for enhancing coagulative precipitation by using residual activated sludge microorganisms, which comprises the following steps: (1) activated sludge microorganism adsorption; (2) removing fluorine by coagulating sedimentation and microbial flocculation; the method comprises the following steps: (1) a polymerization stage: adding a fluorine removal agent into a coagulative precipitation tank, and carrying out mixed reaction on the fluorine removal agent and fluoride, phosphate ions and the like in sewage to form a polymer; (2) a flocculation stage: adding cation PAM and activated sludge microorganisms into a coagulative precipitation tank, and further performing chemical flocculation and microbial flocculation; (3) a precipitation stage: chemical sludge and biological sludge generated in the coagulative precipitation tank are precipitated to realize sludge-water separation, and the sludge is discharged to a sludge storage tank; and (3) sludge dewatering. According to the method, the reutilization of residual activated sludge microorganisms of a sewage plant is realized, and the fluorine removal effect of a conventional coagulating sedimentation method is enhanced through adsorption of the activated sludge microorganisms on fluorides and microbial flocculation.

The present invention belongs to the technical field of sewage treatment. Disclosed is a biological adsorption-partial nitrification-anaerobic ammonium oxidation process based on a functional carrier. The process of the present invention is mainly composed of a biological adsorption section, a partial nitrification section, and an anaerobic ammonium oxidation section, wherein in the biological adsorption section, microorganisms in a logarithmic growth phase are screened and enriched by means of a short hydraulic retention time, and organic matters can be efficiently adsorbed; in the partial nitrification section, a nitrification functional carrier is added to enhance the adsorption of ammonia nitrogen, so as to enrich ammonium oxidation bacteria, and a relatively low level of dissolved oxygen is controlled, so that stable partial nitrification is achieved; and in the anaerobic ammonium oxidation section, an anaerobic ammonium oxidation functional carrier is added, so that the biomass and activity of anaerobic ammonium oxidation bacteria are improved by means of enrichment, and the autotrophic nitrogen removal efficiency is improved. The present invention does not need an additional carbon source, has a small aeration amount and low operating costs, and has great prospects in engineering applications.

The invention relates to a method for repairing light rare earth and heavy metal compound polluted soil, which is characterized in that the compound polluted soil is repaired by adopting bacillus sp., the bacillus sp. Is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC No.22085, and the preservation date is March 29, 2021. The repairing process comprises the following steps: mixing the bacillus subtilis bacterial liquid with the cementing liquid to obtain a mixed liquid; mixing the air-dried polluted soil with the mixed solution, and filling the mixture into a mold for reaction; the mold is communicated with a grouting pipe to inject the mixed liquid, and multi-round pumping is carried out; and after pumping is completed, the polluted soil is maintained and naturally air-dried. According to the method, dominant strains are adopted, biological adsorption and biological mineralization are combined, and effective control over the light rare earth and heavy metal compound contaminated soil is achieved under the action of dual bioremediation.

The invention discloses a bio-trickling filter filler based on a metal organic framework. The bio-trickling filter filler comprises soluble metal salt, an organic ligand and an adhesive. The preparation method comprises the following steps: mixing a soluble metal salt and an organic ligand in a solvent, and carrying out a heating reaction to obtain the metal organic framework material, mixing and granulating the metal organic framework material and an adhesive to obtain the bio-trickling filter filler based on the metal organic framework. The bio-trickling filter filler is simple in preparation method, stable in structural performance, extremely large in specific surface area and high in biological adsorption capacity, has a good adsorption effect on sulfur-containing foul waste gas, is relatively high in degradation efficiency, can effectively combine an adsorption method and a biological method, and can play the advantages of the adsorption method and the biological method; the removal rate of hydrogen sulfide, organic sulfide and benzene series in the sulfur-containing foul waste gas can reach 99.5%.

The application discloses magnesium modified straw biochar as well as a preparation method and application thereof, and belongs to the technical field of bio-adsorption materials. The preparation method of the magnesium modified straw biochar comprises the following steps: after straw is immersed in a magnesium salt solution (the concentration of the magnesium salt solution is 0.05-0.5 mol / L) and carbonized, the magnesium modified straw biochar is obtained. The magnesium modified straw biochar prepared by the application has a high specific surface area and rich surface functional groups, can effectively adsorb phosphorus in sewage, and realizes effective removal of phosphorus in eutrophic water bodies.

An A H C R -A 2 O sewage treatment system, comprising: an anaerobic tank, a biological adsorption hydrolysis-clarification and redistribution tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank. A new biological adsorption hydrolysis-clarification and redistribution tank is provided. After the sewage is mixed with the external reflux sludge, pollutants are rapidly adsorbed and partially hydrolyzed, and settle to the bottom of the tank body, and the supernatant is collected in the upper part of the tank body. The supernatant outlet is respectively connected to the anoxic tank and the aerobic tank and selectively conducted, and the bottom sludge outlet is connected to the anoxic tank. In the sewage treatment method: according to the preset value of the supernatant turbidity, it is selected to flow into the aerobic tank or the anoxic tank, and the bottom sludge is introduced into the anoxic tank. The present invention can improve the nitrogen and phosphorus removal efficiency of a single activated sludge system, improve the utilization rate of the internal carbon source in sewage, reduce the consumption of the external carbon source. When the influent COD / TN≈5, the effluent TN≤10mg / L, the external carbon source does not need to be added, the tank volume is reduced by more than 10%, and it is applicable to the upgrading transformation of the high discharge standard of sewage treatment plants, realizing the functions of improving quality, increasing efficiency and reducing consumption.

The invention relates to a high-performance biological filler for advanced sewage treatment and a preparation method of the high-performance biological filler. The biological filler comprises a nitrogen removal component, a phosphorus removal component, an inorganic carbon source component, an active component, 2-5 parts of a filler reinforcing component, a rare element component and a pore forming agent. The high-performance biological filler for advanced sewage treatment does not need any organic bonding agent or pore-forming agent, can simultaneously realize various functions of autotrophic denitrification, chemical phosphorus removal, heavy metal adsorption passivation, microbial adsorption biofilm formation and the like, has better physical properties, remarkably improves the sewage treatment effect, and greatly reduces the treatment cost.

The invention discloses a composite porous phosphorus removal filter material and a preparation method thereof, the filter material is prepared by taking aluminum hydroxide, limestone, concrete, perlite, modified zeolite, a foaming agent and a mixture of euglena, chlorella and spirulina as main components through the steps of pulping, foaming, coating, curing, crushing, screening and the like. The phosphorus removal efficiency is remarkably improved through ion exchange and chemical adsorption effects of the modified zeolite, the performance of the filter material is further enhanced through biological adsorption and biological assimilation effects of the microalgae, and in addition, the phosphorus removal effect of the filter material is further improved through stable precipitates formed by special components and phosphate. The filter material has the advantages of efficient phosphorus removal, environmental protection, no pollution, multifunctionality, economical efficiency and the like, is suitable for the fields of sewage treatment plants, lake remediation, aquaculture and the like, and has the advantages of high phosphorus removal efficiency, simple preparation process, low raw material cost and easiness in industrial production.

The present application relates to the technical fields of wastewater purification and energy storage material, and discloses an energy storage carbon material, a preparation method and application thereof.The method comprises the following steps: carbonizing biomass waste enriched with metal ions to obtain an energy storage carbon material.The energy storage carbon material can be used to prepare a secondary metal / ion battery.The energy storage carbon material prepared by the present application can promote the uniform deposition of metal in the charging and discharging process, avoid the safety problems caused by dendrite growth, and at the same time, the metal ions in industrial wastewater can be used to prepare high-value-added secondary battery energy storage materials by means of a simple and low-cost method of biosorption.

The utility model belongs to the technical field of wastewater treatment devices, and discloses a device for treating low-pollution wastewater by utilizing a biological adsorption material, which comprises a shell, a bracket is fixedly arranged at the top of the shell, and a limiting frame is fixedly arranged at the top of the bracket. Through the arrangement of the limiting frame, the moving plate, the storage box and the driving motor, an operator stores a biological adsorption material in the storage box, then the driving motor is started, a rotating shaft drives a rotating rod to rotate, and then a hinge rod can push the moving plate to move under the limiting effect of the limiting frame; and along with continuous rotation of a rotating shaft, a hinge rod can drive a moving plate to do left-right reciprocating motion in a limiting frame, so that a biological adsorption material in the storage box can be more comprehensively thrown into wastewater through a discharging pipe, the wastewater stirring time is shortened, and the wastewater treatment efficiency is improved. The wastewater treatment efficiency is improved.

The application discloses a method for repairing light rare earth and heavy metal composite contaminated soil, and adopts bacillus megaterium (Bacillus megaterium) to repair the composite contaminated soil. Oceanobacillus sp. The bacillus megaterium is preserved in the China General Microbiological Culture Collection Center, has a preservation number of CGMCC No.22085, and is preserved on March 29, 2021. The repairing process is as follows: mixing bacillus megaterium liquid and cementing liquid to obtain a mixed liquid; mixing the air-dried contaminated soil and the mixed liquid, and then loading the mixed liquid into a mold for reaction; connecting a grouting pipe to the mold to inject the mixed liquid, and performing multiple rounds of pumping; after the pumping is completed, the contaminated soil is maintained and air-dried naturally. The application adopts the advantage strain, combines biological adsorption and biological mineralization, and realizes the effective control of the light rare earth and heavy metal composite contaminated soil under the action of double biological repair.

The application discloses a kind of metal organic framework-based biological trickling filter fillings, including soluble metal salt, organic ligand and binder.It also includes preparation method, including soluble metal salt is mixed with organic ligand in solvent, heating reaction, obtain metal organic framework material;Metal organic framework material is mixed with binder granulation, obtain metal organic framework-based biological trickling filter fillings.The preparation method of the biological trickling filter fillings is simple, structural performance is stable, with great specific surface area and strong biological adsorption capacity, sulfur-containing malodorous waste gas has very good adsorption effect at the same time, degradation efficiency is higher, can effectively make adsorption method and biological method be combined, and play the advantages of two, compared with prior art, the removal rate of hydrogen sulfide, organic sulfide, benzene series in sulfur-containing malodorous waste gas can reach 99.5% in the application.

The invention discloses a titanium white waste acid treatment process, and relates to the technical field of industrial waste regeneration. The titanium white waste acid is subjected to microfiltration and membrane electrolysis treatment, sulfuric acid is separated and recycled under the control of constant pressure and constant current, and residual liquid is subjected to electrodialysis treatment to oxidize ferrous ions into ferric hydroxide precipitates and calcined into ferric oxide; carrying out reduction leaching on the titanium-containing material, hydrolyzing to generate metatitanic acid, and calcining to obtain titanium dioxide; oxidizing the hydrolysate to precipitate vanadate, and calcining to obtain vanadium pentoxide; adjusting the pH value of the filtrate, selectively adsorbing scandium through a biological adsorption column, precipitating and calcining the eluent to obtain scandium oxide, and regenerating and recycling the adsorbent through acid pickling. According to the process, through multi-stage treatment and biological adsorption, resource recycling of sulfuric acid, iron, titanium, vanadium and scandium components in the waste acid is achieved, the process is clean and efficient, secondary pollution of a traditional process is avoided, and a green low-carbon solution is provided for waste acid treatment in the titanium dioxide industry.

The invention discloses a microorganism-based composite electrode and application of the microorganism-based composite electrode in purification of AMCs wastewater, and belongs to the technical field of electrochemical water treatment.The microorganism-based composite electrode takes aspergillus niger spores as an active material, Fe3O4 solid powder as a catalytic material and foam metal as a current collector matrix, and the active material and the catalytic material are prepared into the microorganism-based composite electrode. Aspergillus niger spores are wrapped in Fe3O4 solid powder to form an aspergillus niger spore coated Fe3O4 core-shell structure, the aspergillus niger spore coated Fe3O4 core-shell structure is uniformly distributed in a three-dimensional porous structure of foam metal through a binder, and the microorganism-based composite electrode can be used as a cathode for constructing an electro-Fenton-biological adsorption coupling system and can be used for purifying AMCs wastewater. According to the method, an electro-Fenton-biological adsorption coupling technology is utilized, an AMCs complex structure is damaged through electro-Fenton oxidation, heavy metal ions are released, heavy metal ion adsorption is achieved through the biological adsorption effect of aspergillus niger spores, AMCs wastewater can be well degraded, a reaction system is stable, operation is convenient and controllable, follow-up pollution is avoided, and the method has good application prospects.

The application provides a groundwater in-situ remediation system and method of multiple biological permeation reaction wall coupling ultrasonic waves and plant remediation, the groundwater in-situ remediation system comprises a multiple biological permeation reaction wall, a PLC control system and an artificial plant ecological remediation area, the multiple biological permeation reaction wall is arranged in a funnel-gate type engineering, the funnel part blocks the contaminated groundwater through a vertical cement curtain, an ultrasonic generator module is arranged in front of the gate part of the multiple biological permeation reaction wall, the multiple biological permeation reaction wall is divided into two layers, the filling material of the first layer permeation reaction wall is mainly composed of zero-valent iron, iron oxide and construction waste, the filling material of the second layer biological permeation reaction wall is mainly composed of high-performance biological adsorption zeolite and ORC slow-release material calcium peroxide, a microbial bacteria liquid injection pipe is arranged in the second layer biological permeation reaction wall, and monitoring wells are arranged on the two sides of the multiple biological permeation reaction wall and the artificial plant ecological remediation area.The application can treat and remediate multiple composite pollutants at a time, and the pollutant degradation efficiency is improved.

The invention discloses high-salt heavy metal wastewater advanced treatment equipment and method based on gradient purification, and relates to the field of wastewater treatment.The high-salt heavy metal wastewater advanced treatment equipment comprises a cyclone separation module, a conditioning module, a desalting module and a heavy metal advanced removal module which are sequentially connected in the wastewater treatment flow direction; the cyclone separation module, the conditioning module, the desalting module and the heavy metal deep removal module are all borne by a rigid rack and packaged through detachable sealing cover plates so as to form the integrated treatment equipment connected in series according to the treatment gradient. According to the treatment equipment and method, four wastewater treatment processes of physical separation, chemical conditioning, electrochemical desalination and biological adsorption are subjected to modular integration and gradient series connection, a step-by-step purification scheme from macroscopic treatment to microscopic treatment and from coarse treatment to fine treatment is constructed, pollutants can be efficiently separated before entering a core membrane unit, and the treatment efficiency is improved. The impact of the high-salt heavy metal wastewater on the membrane separation unit is fundamentally reduced.

The utility model discloses a wastewater treatment device based on a magnetic adsorbent, and aims to solve the problems that the existing electroplating wastewater treatment difficulty is high and the magnetic adsorbent is difficult to recover. According to the wastewater treatment device based on the magnetic adsorbent, a tank body of an adsorption reaction tank is cylindrical, a water decanter is arranged in the adsorption reaction tank, a first electromagnet device is arranged at the lower part of the cylindrical tank body of the adsorption reaction tank, and a second electromagnet device is arranged at the inverted conical tank bottom of the adsorption reaction tank; a first water outlet of the raw water tank is communicated with the adsorption reaction tank through a first water pipe, one end of a second water pipe is communicated with a second water outlet of the raw water tank, the other end of the second water pipe is communicated with a water inlet of the adsorption reaction tank, and a water injector is arranged on the second water pipe. Based on the magnetic separation characteristic of the magnetic composite adsorbent, the adsorption-magnetic separation reactor is designed, heavy metal wastewater is effectively treated, and meanwhile efficient separation and concentration of the magnetic biological adsorbent can be achieved through the electromagnet.

The invention relates to the technical field of sewage treatment, and particularly discloses a domestic sewage advanced treatment process which comprises the following steps: mechanical grating impurity removal, balancing, integrated air floatation, anaerobic treatment, aerobic treatment, precipitation and biological adsorption. Wherein in the anaerobic treatment step, the hydraulic retention of an anaerobic tank is 8-10 hours; the microorganism concentration of anaerobic compound bacteria in the anaerobic tank is 3-6g / L; the anaerobic compound bacteria are a mixture of clostridium butyricum, bifidobacterium longum and methanogens; furthermore, the weight ratio of the clostridium butyricum to the bifidobacterium longum to the methanogens is 1: (0.4-0.6): (1.8-2.3). According to the domestic sewage advanced treatment process provided by the invention, refractory organic matters, suspended solids and ammonia nitrogen in domestic sewage can be effectively removed, so that the effluent quality is stable, and higher discharge and reuse standards can be reached.

Provided herein is a process for the removal of micropollutants and / or other pollutants from water, involving subjecting the water to a consecutive combination of biological adsorbent filtration (BAF) followed by oxidation treatment (OT), preferably ozone treatment. In a preferred embodiment, an adjustable amount of the OT effluent, preferably an adjustable amount ranging between 10-100%, more preferably 20-90%, more preferably 20-80%, most preferably 20-50% of the OT effluent, is recirculated to the BAF. The process may involve monitoring the formation of oxidation products at the end of the OT, and / or for measuring TOC, DOC, SUVA, ammonium and / or specifically targeted pollutants in or at the end of the BAF, and controlling the amount of BAF-OT treated water which is recirculated to the consecutive steps of BAF and OT based on the output of the monitoring step.

The invention discloses a resource type sewage treatment system and method based on an MBBR process, and belongs to the field of sewage treatment. The system comprises a carbon source transfer and screening pretreatment unit, an MBBR biochemical treatment unit, a biological adsorption sludge acquisition unit and a mud-water deep separation unit which are sequentially connected, and further comprises a sludge return pipeline, a heat energy extraction unit, an EPS extraction unit and a sludge synergistic fermentation unit. The heat energy extraction unit can achieve whole-process sewage heat extraction, after the EPS extraction unit extracts EPS production environment-friendly materials, residual sludge returns to a fermentation system for secondary methane production, and gradient utilization of a carbon source is achieved. Through the integrated design of carbon source directional screening, sludge closed-loop backflow, mud-water deep separation characteristic adaptation and resource linkage recovery, the essential bottleneck of the prior art is broken, and synchronous synergism of sewage treatment and carbon, heat and material source recovery is achieved.

The invention discloses a biological treatment method for triphenylmethane dye wastewater, and belongs to the technical field of biological sewage treatment. The dye is removed by utilizing the self-assembled biological particles through biological adsorption and biological transformation, and the preparation method of the self-assembled biological particles comprises the following steps: inoculating a certain amount of aspergillus niger spore suspension into a liquid culture medium in a conical flask, culturing for 3-4 days in a shaking table to form mycelium pellets, adding a certain amount of activated sludge, and uniformly stirring to obtain the self-assembled biological particles. And continuously culturing in the shaking table for 1-2 days to form the self-assembled biological particles. And adding the prepared self-assembled biological particles into triphenylmethane dye wastewater with a certain concentration, and reacting in a shaking table for 8 hours. The method effectively solves the problem that the triphenylmethane dye wastewater is difficult to biologically remove, provides an economical and efficient biological treatment technology for the wastewater, and has wide application prospects in treatment of explosive, pesticide, medicine and dye wastewater.

The present application relates to a kind of sewage advanced treatment high-performance biological filler and its preparation method, the biological filler includes nitrogen removal component, phosphorus removal component, inorganic carbon source component, active component, 2-5 parts filler reinforcing component, rare element component, pore-forming agent.The sewage advanced treatment high-performance biological filler of the present application does not need any organic adhesive agent and pore-forming agent, can simultaneously realize autotrophic denitrification, chemical phosphorus removal, heavy metal adsorption passivation, microorganism adsorption biofilm formation and other multiple functions, the physical property of filler is better, sewage treatment effect is significantly improved, and greatly reduces processing cost.

Application of Lysinibacillus fusiformis in removing hexavalent chromium from eutrophic wastewater, belonging to the field of microbial technology. The strain is preserved in the General Microbiological Center of the China Committee for Culture Collection of Microorganisms, with the preservation address being No. 3, Yard 1, Beichen West Road, Chaoyang District, Beijing, the preservation number being CGMCC No. 10053, and the preservation name being Lysinibacillus fusiformis WTXJ1-4, and the preservation date is November 25, 2014. Through single-factor experiments and orthogonal experiments for optimization, the suitable biological adsorption conditions of this strain for hexavalent chromium in eutrophic wastewater were determined as follows: pH 2.0, initial potassium dichromate concentration 50 mg / L, adsorption time 24 h, wet cell mass dosage 1.0 g / L, adsorption temperature 34 °C, and rotation speed 160 r / min. When reaching equilibrium under these optimized adsorption conditions, the removal rates of hexavalent chromium and total chromium in eutrophic wastewater by viable cells of WTXJ1-4 reached 91.6% - 94.8% and 42.2% - 43.8% respectively. Lysinibacillus fusiformis Viable cells of WTXJ1-4 have strong adsorption-reduction ability, tolerance and resistance to hexavalent chromium in eutrophic wastewater, and their effective ranges are potassium dichromate concentrations of 0 - 100 mg / L, 100 - 300 mg / L, and 300 - 500 mg / L respectively.

The present invention belongs to the technical field of industrial wastewater treatment and discloses a microbial remediation method for heavy metal contaminated wastewater, specifically: using Vibrio natriegens to remove Cu in wastewater. 2+ and / or Cr 6+ The present invention first discovered that Vibrio natrii can be used as a biosorbent to remove heavy metals, especially Cu 2+ Cr 6+ removal, can be used to repair different Cu 2+ Cr 6+ It can be used in wastewater with a high degree of pollution, and Vibrio natrium grows quickly and has a low cultivation cost. It can be seen that the use of Vibrio natrium to repair heavy metal pollution has good application prospects.

The application provides a method for cooperatively recovering copper in metallurgical sludge by bio-adsorption and complex breaking, comprising the following steps: 1) in a circulating system, pumping organic acid solution into a metallurgical sludge packed column and an ethylenediaminetetraacetic acid dianhydride modified bio-adsorbent packed column in sequence, and carrying out cyclic leaching; 2) after the cyclic leaching, adopting a calcination method to recover copper-based recovery materials adsorbed on the modified bio-adsorbent. The recovery process combining organic acid leaching and bio-adsorption complex breaking can realize efficient and selective leaching and recovery of copper ions under low acidity conditions; the recovery process is simple and convenient to operate, the organic acid complexing agent can be reused, the cost is low, and the method is suitable for popularization and application.

The present invention provides a magnetically enhanced method for capturing carbon sources in wastewater, aiming to address the problems of low carbon source resource utilization and high carbon emissions in existing wastewater treatment processes. The method comprises: adding a coagulant and a magnetic medium to wastewater to coagulate into intermediate effluent one; separating intermediate effluent one with a first magnetic separation device to obtain concentrated carbon source one and intermediate effluent two; adding a biological flocculant and a magnetic medium to intermediate effluent two to carry out a biological adsorption reaction to obtain intermediate effluent three; adding a coagulant and activated carbon to carry out flocculation and adsorption to obtain intermediate effluent four; separating intermediate effluent four with a second magnetic separation device to obtain concentrated carbon source two and effluent; subjecting concentrated carbon source one and concentrated carbon source two to anaerobically digestion to obtain methane and a digested mud-water mixture; and dispersing and recovering the digested mud-water mixture with a magnetic recovery device to obtain recovered magnetic media and sludge. This method has a high capture rate of carbon source organic matter and can achieve the effects of low-carbon energy conservation and emission reduction.

The invention discloses a method for rapidly detecting heavy metal pollution by utilizing microalgae based on a terahertz metamaterial sensor, which comprises the following steps of: acquiring terahertz frequency shift spectrograms of heavy metal stress microalgae with different concentrations on the basis of a biological adsorption mechanism of the microalgae and the terahertz metamaterial sensor; the analysis finds that the transmission peak of the microalgae at about 2.069 THz gradually moves to low frequency along with the increase of the heavy metal concentration, and a transmission peak frequency shift-heavy metal concentration quantitative relation curve graph is established.

The invention provides an efficient modified plant-based water nitrate bio-adsorbent and a preparation method thereof. Compared with a traditional activated carbon adsorbent, the prepared efficient modified plant-based water body nitrate bio-adsorbent has the advantages that the specific surface area is larger, nitrate in a water body can be effectively removed, the continuous and efficient adsorption effect on the nitrate is achieved within the adsorption time of 15-180 min, the cost of albizia hardtii seed raw materials is extremely low, and the environment-friendly effect is achieved. The raw materials are stable in source and easy to obtain, and good economic and social benefits are achieved.