1378 results about "Biotreatment" patented technology

The invention relates to the technical field of river and lake landscape water system purification, and discloses a river and lake landscape water system composite purification system, which comprises a water quality parameter acquisition module, an ecological analysis module, a microbiological treatment module, a multi-stage collaborative purification module, a purification parameter generation module, an authority association module and a dynamic regulation and control module. The water quality parameter acquisition module acquires data in multiple dimensions to quantify the pollution level and trigger a purification instruction; the ecological analysis module evaluates the ecological self-purification capability, and the microbiological treatment module predicts the degradation efficiency; the multi-stage collaborative purification module generates a regulation and control signal in combination with the evaluation value; the purification parameter generation module generates repair and activation parameters accordingly; the permission association module monitors the emission permission of the pollution source; and the dynamic regulation and control module forms a closed-loop purification process. According to the system, through multi-module cooperation and closed-loop regulation and control, accurate recognition of river and lake landscape water system pollution, ecological self-purification capability activation and microbial degradation enhancement are achieved, and the purification efficiency and ecological restoration long-term effect are improved.

The invention relates to the technical field of sewage treatment, in particular to an aerobic aeration treatment system for plateau domestic sewage treatment, which comprises a pretreatment unit, a biological treatment unit, an advanced treatment unit and a recycling unit which are connected in sequence, the system further comprises a data acquisition module, an aerobic aeration intelligent regulation and control module, a biochemical environment constant-temperature maintenance module, a carbon-nitrogen proportion and backflow dynamic regulation and control module, a digital twinning and sludge characteristic simulation module and an energy collaborative scheduling module. Compared with the prior art which adopts a standard aeration strategy and cannot adapt to the special environment of low air pressure and low oxygen partial pressure of the plateau, the system can accurately adapt to the plateau environment by integrating real-time atmospheric pressure and water temperature monitoring, dynamically calculating the oxygen saturation solubility and correcting the aeration control target according to the oxygen saturation solubility, so that the aeration control target is optimized. Stable supply of dissolved oxygen required by biochemical reaction is ensured, and the technical bottleneck of low efficiency of traditional sewage treatment in plateau regions is fundamentally overcome.

The invention provides an intelligent management method and system for reducing pollution and carbon of rural domestic sewage. According to the method, sewage flow velocity, COD concentration, ammonia nitrogen content data, user water use time and detergent use amount are collected, and a database is constructed. And weighting the flow velocity and COD to generate a pollution load evaluation value, and calculating an organic matter pollution influence value in combination with ammonia nitrogen and detergent data. A porous ceramic medium is arranged in the biological treatment device, and the dissolved oxygen concentration is adjusted according to the pollution load. A correlation curve of a COD concentration peak value and water consumption time is established, a prediction model is constructed in combination with dissolved oxygen parameters, the gas injection and reflux ratio is adjusted through graded pressure instructions, and the critical value of dissolved oxygen is maintained. The day and night temperature difference is fused to correct the degradation rate, and the optical detection data is combined to optimize the critical range and the instruction priority, so that the cooperative control of sewage treatment and carbon emission reduction is realized. According to the invention, self-adaptive adjustment of dissolved oxygen in sewage treatment is realized, and the sewage reduction and carbon reduction management efficiency of domestic sewage is improved.

The invention belongs to the technical field of water treatment, and particularly provides a fungus filament bamboo-based biomass composite material and a lead-containing sewage treatment method. According to the invention, the lead-containing sewage is pretreated by using microorganism neurospora crassa, and then the lead-containing sewage is post-treated by using the fungus filament bamboo-based biomass composite material prepared under specific conditions, so that the mildness of microorganism treatment and the efficient adsorbability of the biomass composite material are effectively combined; and finally, the removal rate of heavy metal lead is increased, the cost is low, and environmental friendliness is achieved.

A biological treatment of sewage device and method for realizing advanced nitrogen removal of domestic sewage by half partical nitrification-anammox coupled with sulfur autotrophic denitrification. The device includes a raw water tank, a half partical nitrification reactor, a regulating water tank and an anammox coupled denitrification reactor. The domestic sewage enters the half partical nitrification reactor, a mass concentration ratio of NO2−—N to NH4+—N in effluent water is 1-1.32 through real-time control, and then the effluent water enters the intermediate water tank. After it enters the upflow anammox coupled with autotrophic denitrification granular sludge reactor, the synergistic reaction of anammox and sulfur autotrophic denitrification in the reactor achieves the nitrogen removal. The device and the method improve denitrification efficiency by making full use of the synergistic effect between microorganisms, thereby realizing high-efficiency and energy-saving advanced nitrogen removal of municipal sewage.

The invention provides lepidolite flotation wastewater treatment equipment and a flotation process, and relates to the technical field of wastewater treatment, the lepidolite flotation wastewater treatment equipment comprises a reaction tank, a stirring mechanism, a swing dosing mechanism and a spraying mechanism; the stirring mechanism comprises a mounting frame fixedly arranged at the top of the reaction tank, and a rotating shaft is vertically and rotatably connected to the inner side of the mounting frame. According to the scheme, a ferrous sulfate solution is finally added into the reaction tank through the spraying mechanism, then a diluted H2O2 solution is intermittently fed through the swing medicine feeding mechanism, the H2O2 solution generates strong oxidizing hydroxyl free radicals under the catalysis of the ferrous sulfate solution, and therefore hydrophobic chains and polar groups of residual medicine are destroyed, and the medicine is obtained. The lepidolite metallurgical flotation wastewater is degraded into small molecular organic matters or mineralized into CO2 and H2O, so that the phenomenon that the subsequent coagulating sedimentation or adsorption process is hindered by residual chemicals is avoided, the chemical oxygen demand and toxicity of the wastewater are reduced, the subsequent biological treatment on the wastewater is facilitated, and the treatment effect and efficiency of the lepidolite metallurgical flotation wastewater are effectively improved.

The invention provides a digital control-based printing and dyeing industrial wastewater pH value automatic regulation system, which comprises a pH value detection module, a data processing module, a control module and a regulator adding module, realizes real-time monitoring and accurate control of the printing and dyeing industrial wastewater pH value, effectively avoids the problem of unstable biological treatment effect caused by pH value fluctuation, and improves the quality of the printing and dyeing industrial wastewater. Through an accurate sensor and an advanced control algorithm, the system can obtain wastewater pH value data in real time and automatically calculate the adjusting amount, so that the wastewater pH value is always kept in an optimal treatment range, the wastewater treatment efficiency and stability are improved, and a traditional manual adjustment mode is time-consuming, labor-consuming, time-saving and labor-saving. The system can automatically adjust the adjusting amount according to real-time data, so that the continuity and stability of wastewater treatment are realized, and the overall treatment efficiency is improved.

A low-carbon near zero emission process of industrial waste water, comprising: S1: entering industrial waste water into a pre-oxidation system to improve biodegradability of organics; S2: after treatment in the pre-oxidation unit, entering the waste water into an anaerobic biological treatment system, sodium chloride and sulfate is deeply removed and carbon sources in the waste water can be used to remove the sulfate and nitrate; S3: entering water output from the anaerobic biological treatment system into a membrane concentration system and membrane concentrated solution enters a nano-filtration salt fractionation system for salt fractionation; and S4: refluxing nano-filtration concentrate solution generated by the nano-filtration salt fractionation system to the anaerobic biologic treatment system for biological desulfurization, or synthesizing the nano-filtration concentrate solution to be sodium persulfate by electro chemical methods, and refluxing proportionately to a waste water pre-oxidation system for use in-situ.

The invention discloses a treatment method of tantalum-niobium smelting wastewater, and relates to the technical field of tantalum-niobium smelting, and the treatment method specifically comprises the following steps: step 1, wastewater collection and primary treatment; step 2, physicochemical reaction and precipitation; step 3, biological treatment; and step 4, MBR membrane pool treatment. According to the treatment method of the tantalum-niobium smelting wastewater, uniform distribution of the coagulant or the precipitant in the precipitation tank can be ensured by intermittently adding the coagulant or the precipitant, and over-high or over-low local concentration caused by one-time large-amount adding is avoided, so that the coagulation effect is improved, impurities such as suspended solids, part of organic matters and sulfate in the wastewater are more effectively removed, and the treatment effect is improved. The input amount of the coagulant or the precipitator can be flexibly adjusted according to the water quality change and the treatment requirement in the sedimentation tank, so that the treatment process is more accurate and efficient; by accurately controlling the input amount of the coagulant or the precipitant, waste caused by excessive addition can be avoided, and the consumption of chemical agents is reduced.

The invention discloses printing and dyeing sewage treatment equipment with a filter screen cleaning function, which comprises a sedimentation tank for treating sewage, a partition plate is fixed in the sedimentation tank, the partition plate divides the sedimentation tank into a physical treatment cavity and a biological treatment cavity, and a through hole for sewage circulation is formed in the partition plate; a rotating shaft capable of rotating transversely penetrates through the partition plate, and a motor for driving the rotating shaft to rotate is mounted at the upper end of the sedimentation tank; the rotating shaft is divided into two parts by a partition plate, and a collector for filtering sewage and a mixer for mixing the sewage are respectively arranged on the two parts of the rotating shaft. According to the invention, suspended matters in sewage can be blocked by the filter strip, the rotating filter strip changes the matching position with the through hole, the suspended matters are easily separated from the filter strip, the outer side fan plate pushes the sewage to move towards the rotating shaft, the filter strip adheres to the suspended matters and moves into the annular hole, the suspended matters are remained in the receiving box, and the number of times of cleaning the suspended matters is reduced.

The invention discloses a system and a method for classified sewage treatment, and belongs to the technical field of environmental engineering and water treatment. The system comprises the following components: an intelligent water quality detection module, which is used for real-time and accurate monitoring of COD, BOD, ammonia nitrogen, total phosphorus, suspended matter concentration and heavy metal content; the sectional bioreactor realizes deep removal of nitrogen and phosphorus and efficient biological treatment by flexibly adjusting reaction conditions of each section; the intelligent flocculation control module is used for automatically and accurately adjusting the adding amount of a flocculating agent, and is combined with integrated operation of efficient inclined tube precipitation and sludge concentration, so that the water quality of discharged water is stable, and the medicament consumption is reduced; the ultrafiltration membrane bioreactor effectively removes residual suspended matters and colloids, and ensures that the effluent stably reaches the standard for a long time through the synergistic effect of catalytic ozonation; and the sludge treatment module is used for realizing collaborative optimization management of sludge reduction, recycling and energy recycling.

The invention discloses a multistage sewage treatment device and method combining biological treatment and electro-Fenton, and relates to the field of water pollution control, the device is composed of a three-chamber microbial fuel cell reactor, and the three-chamber microbial fuel cell reactor is sequentially composed of a microbial anode chamber, an electro-Fenton cathode chamber and a photosynthesis chamber from left to right. The biological anode chamber consists of filled anaerobic granular sludge and a carbon brush electrode serving as an electron collector; and the core structure of the electro-Fenton cathode chamber is a gas diffusion cathode loaded with nano FeCo2O4. The microbial anode chamber and the electro-Fenton cathode chamber are isolated by a proton exchange membrane, and the gas diffusion electrode separates the electro-Fenton cathode chamber and the photosynthesis chamber at the same time. According to the invention, the combination of two clean energy sources, namely microbial energy and light energy, is realized, the efficient removal capability of aerobic and anaerobic biological treatment technologies and the synergistic mechanism of microorganisms and algae for purifying sewage are combined, the efficiency of the microbial fuel cell is further optimized, and the removal of ammonia nitrogen and refractory organic pollutants in the sewage is realized.

The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system and process based on anaerobic digestion and biological contact oxidation, the wastewater treatment system comprises a pretreatment unit, a biological treatment unit, a precipitation separation unit, a sludge treatment unit and an auxiliary equipment unit, and all the units work cooperatively. Pollutants in the waste water can be effectively removed, and the environment-friendly emission standard or the recycled water quality requirement is met; the system effectively intercepts impurities and regulates water quality through pretreatment units such as the grating channel and the primary sedimentation tank; anaerobic treatment, anoxic treatment and aerobic treatment are combined, organic matters are efficiently degraded, and pollutants are removed; water quality is clarified through the sedimentation tank to ensure that effluent stably reaches the standard; the sludge treatment unit effectively collects and treats sludge, and the treatment difficulty is reduced; a quartz sand filtering and PAM and PAC adding system is utilized, so that the treatment effect is further improved, and the effluent quality is ensured; meanwhile, the process is efficient in treatment, proper in sludge treatment and excellent in effluent quality.

The invention relates to the field of environment restoration, and discloses a semi-coke ecological system environment restoration method which comprises the following steps: waste gas treatment: treating sulfur-containing gas, nitric oxide and particulate matters generated in semi-coke production by adopting a multi-stage gas purification device, and further purifying residual harmful substances by adopting a low-temperature plasma technology; wastewater treatment: carrying out multi-stage purification on industrial wastewater generated in semi-coke production through physical filtration, chemical precipitation and biological treatment, and carrying out advanced treatment on the wastewater in combination with a membrane separation technology; and solid waste treatment: carrying out high-temperature gasification treatment on solid wastes generated in semi-coke production, recovering energy and using residues for regenerated material production. The comprehensive treatment of various pollutants generated in the production process is realized through the technologies of multi-stage waste gas purification, waste water deep treatment and solid waste resource utilization, and the removal efficiency of sulfur oxides and nitrogen oxides is remarkably improved by the waste gas treatment system through the combination of wet desulfurization and dry desulfurization.

A perfusion bioprocessing system (10) includes a bioreactor (12) and a recirculation flow path (14) provided with at least in one first feed flow control device (46) and at least one second feed control device (48). The perfusion bioprocessing system (10) further includes a first tangential flow filter (16) coupled to the bioreactor (12) via the recirculation flow path (14) and a second tangential flow filter (18) coupled to the bioreactor (12) via the recirculation flow path (14). The first tangential flow filter and the second tangential flow filter are coupled to a permeate flow path and a retentate flow path. Additionally, the perfusion bioprocessing system (10) includes a control unit (90) coupled to the at least one first feed flow control device (38) and the at least one second feed control device (40).

The invention relates to the technical field of environmental engineering, in particular to an aerobic granular sludge sewage treatment process which comprises the following steps: S1, performing ultrasonic treatment on raw sewage; s2, preliminarily screening the sewage subjected to ultrasonic treatment; s3, adjusting the pH value of the screened sewage, and adding nutrient substances; s4, injecting the adjusted sewage into a biological reaction zone containing pre-cultured aerobic granular sludge, and carrying out intermittent aeration operation; s5, regularly performing microwave treatment in the biological reaction process; s6, carrying out chemical precipitation on the sewage subjected to biological treatment; s7, performing microfiltration on the sewage subjected to biological treatment and chemical treatment; s8, performing ozone and ultraviolet light treatment on the water subjected to microfiltration; s9, carrying out tail end disinfection on the treated water; according to the invention, the formation and stabilization of aerobic granular sludge are effectively promoted, the removal efficiency of pollutants such as organic matters, nitrogen and phosphorus in sewage is improved, and the effluent quality is ensured to reach the standard.

The invention discloses a complex microbial inoculant for treating underground water as well as a preparation method and application thereof, relates to the field of sewage treatment, and aims to solve the problem that TBBPA and nitrate in underground water are difficult to remove at the same time in an existing biological treatment method. The composite microbial agent is prepared from pseudomonas koreensis Y5-11, acinetobacter pidermatum LYS-5, Pseudomonas sp. Y39-6 and psychrophilic bacteria F5-6, and the pseudomonas sp. Y5-11, the acinetobacter pidermatum LYS-5, the Pseudomonas sp. Y39-6, the psychrophilic bacteria F5-6 and the psychrophilic bacteria F5-6 are added into the microbial agent. The four strains are respectively subjected to fermentation culture, and the four fermentation liquids are mixed to prepare the complex microbial inoculant. The four bacteria in the complex microbial inoculant have a stronger metabolism complementation effect, and the effect on composite pollution remediation is more remarkable. The complex microbial inoculant is used for removing TBBPA and nitrate in underground water at the same time, the complex microbial inoculant has biodiversity, and the treatment result conforms to the water quality characteristics of the underground water.

The invention discloses a polluted water body online monitoring method and device for sewage treatment, and particularly relates to the technical field of sewage treatment monitoring. Monitoring equipment is deployed in a sewage pretreatment stage, a physical and chemical treatment stage, a biological treatment stage, an advanced treatment stage and a discharge stage and used for monitoring characteristic parameters of a polluted water body; an intelligent regulation and control instruction is generated by analyzing monitoring data of each stage, and processing process parameters are dynamically adjusted, so that process optimization is realized; according to the method, a data monitoring stability coefficient and a comprehensive pollution over-limit coefficient are calculated, a sewage treatment monitoring quality index is calculated in combination with an intelligent regulation and control reliability coefficient and a data monitoring reliability coefficient, and a method for quantitatively evaluating a monitoring effect is provided; by collecting process data in a sewage treatment log and combining with a monitoring result, the monitoring effect standard-reaching rate is dynamically updated, and a'monitoring-regulation-evaluation-optimization 'closed loop is formed.

The invention belongs to the technical field of wastewater treatment, and particularly relates to an activated sludge water treatment system and method.The activated sludge water treatment system comprises a contact oxidation pond, an intelligent filter and a control system, a microbiological treatment system comprises a microbiological community monitoring module and a microbiological regulation and control module, and the microbiological community monitoring module comprises a high-throughput sequencing analysis unit and an early warning trigger unit. The early warning trigger unit comprises an early warning data receiver and an alarm. The microbial regulation and control module comprises a microbial data collection unit and a microbial agent adding unit. The microbial agent adding unit comprises a microbial agent storage tank, a microbial agent blending module and an adding and conveying module. According to the activated sludge water treatment system provided by the invention, the high-throughput sequencing analysis unit, the early warning trigger unit, the microbial data collection unit and the microbial agent adding unit work cooperatively, so that the whole-process intelligent management from real-time monitoring of microbial communities, imbalance early warning to precise regulation and control is realized, and the water environment quality is improved.

The invention discloses a method for recovering phosphorus through anaerobic digestion by adding sludge-based biochar, which comprises the following steps of: firing dewatered sludge serving as a raw material under an anaerobic condition to obtain carbonized carbon; or firing under an aerobic condition to obtain pyrolytic carbon, adding any sludge-based biochar obtained by firing into the hydrothermal dewatered sludge, and carrying out anaerobic digestion on the hydrothermal dewatered sludge; the hydrothermal dewatered sludge is obtained by performing hydrothermal pretreatment on dewatered sludge; and carrying out phosphorus recovery on the sludge-based biochar subjected to anaerobic digestion by utilizing a magnetic separation method. Compared with the traditional method for recovering the phosphate fertilizer from the sludge incineration ash, the recovery method disclosed by the invention is green and pollution-free, belongs to a sludge treatment mode of treating waste with waste, realizes effective combination of a heat treatment mode and a biological treatment mode, and has a good practical application value. Moreover, the prepared sludge-based biochar has the property of magnetism, so that the recovery rate of the subsequent blue iron ore is increased, and the separation difficulty and economic investment are reduced.

The invention relates to the technical field of meat product processing, and discloses a sewage purification treatment method for meat product processing, which comprises the following steps: S1, pretreatment, S2, adjustment of water quality and water quantity, setting of an adjusting tank, adjustment of water quality and water quantity of sewage, realization of homogeneous and uniform treatment of sewage, and provision of buffer capability for organic load; s3, biological treatment, S4, advanced treatment, S5, sludge treatment and S6, monitoring and evaluation, the water quality and the water quantity of sewage in a regulating tank are balanced and regulated, stability is kept, growth and reproduction of microorganisms in the biological treatment stage are facilitated, and the sewage treatment efficiency is improved; after biological treatment, suspended solids, colloidal substances and microbial pollutants in the sewage are further removed through coagulating sedimentation, filtration and disinfection measures, and the effluent quality is improved; and the sludge generated in the sewage treatment process is subjected to resource utilization, so that the pollution to the environment is reduced to a great extent.

The invention relates to the field of sludge circulation treatment, in particular to a sludge circulation treatment method capable of reducing pollution and carbon. The sludge circulation treatment method capable of reducing pollution and carbon comprises the following treatment steps: S1, sludge disintegration: selecting a sludge sample in sewage, and screening out dominant bacteria and reproduction conditions; s2, anaerobic digestion treatment: adding the screened strains into a sludge anaerobic digestion device for anaerobic digestion treatment; s3, sewage treatment: conveying the sewage subjected to anaerobic digestion treatment into a sewage treatment device, and selecting organic matters dissolved out of sludge in the step of anaerobic digestion treatment as a denitrification carbon source for biological treatment. According to the present invention, the sludge digestion innovative process is adopted, the original anaerobic reaction process in the sewage process is utilized, the decomposition and acidification effects on the biochemical excess sludge are enhanced, the methanogenesis reaction is inhibited through the internal ammonia nitrogen, the dissolution acid production efficiency is improved, the reaction time is shortened, and the on-site resource utilization of the sludge is achieved.

The invention provides a microbial sample automatic treatment system and a treatment method, and belongs to the technical field of microbial treatment. The automatic microorganism sample treatment system comprises a workbench, a pushing device arranged on the workbench, a loading rotary table and a flow rotary table, the loading rotary table and the flow rotary table are rotationally arranged on the workbench, a vessel cover loading position and a loader loading position are arranged on the loading rotary table, and a loader bearing position and a vessel cover bearing position are arranged on the flow rotary table. The workbench is further provided with a cover opening module, a lineation module and a cover closing moving module which are sequentially arranged in the rotating direction of the assembly line rotating disc, the cover opening module is used for taking away old vessel covers of the loaders located at the loader bearing position, and the cover closing moving module is used for covering the inoculated loaders with new vessel covers located at the vessel cover bearing position; and the new vessel cover is clamped with the loader. The whole system is reasonable in layout and stable and reliable in working process.

The invention relates to the technical field of industrial wastewater treatment, and discloses a modular industrial wastewater intelligent purification treatment system which comprises a sensor monitoring module, an intelligent analysis module, a modular treatment module, an automatic control module and a resource recovery module, the sensor detection module comprises a PH sensor, a turbidity sensor, a dissolved oxygen sensor, a heavy metal sensor and an ammonia nitrogen sensor, the intelligent analysis module comprises a pollutant identification module and a dynamic adjustment process module, and the modular treatment module comprises a physical treatment module, a chemical treatment module and a biological treatment module. The modularized intelligent purification treatment system for industrial wastewater can be rapidly and accurately adjusted according to real-time changes of sewage components, compared with a traditional immobilization process, waste of resources is avoided, the treatment efficiency is remarkably improved, meanwhile, multiple treatment technologies such as physical treatment, chemical treatment, biological treatment, adsorption and disinfection are integrated, and the system is suitable for popularization and application. And the device has strong treatment capacity on combined pollution and emerging pollutants.

The invention belongs to the field of sewage treatment, and discloses a two-phase mud film efficient synchronous nitrogen and phosphorus removal process. By integrating biological denitrification and chemical phosphorus removal technologies and adopting a two-phase treatment unit, efficient and synchronous removal of nitrogen and phosphorus in sewage is realized. According to the process, a biological treatment procedure of denitrifying bacteria and nitrifying bacteria under an anaerobic and aerobic alternating condition is utilized, and ammonia nitrogen and nitrate nitrogen in sewage are effectively removed by controlling reaction conditions and formation of a mud film. Meanwhile, ferric salt and polyaluminum chloride flocculants are used for chemical precipitation, phosphate ions form insoluble precipitates by adjusting the pH value and the adding amount, and activated carbon or a zeolite adsorption material is combined for adsorption, so that phosphorus is further removed. The method has the advantages of high treatment efficiency, low operation cost, simplicity and convenience in operation and wide applicability, and an efficient, economic and environment-friendly solution is provided for sewage treatment.

The invention relates to the field of sewage treatment, in particular to an A / O coupling magnetic flocculation system for rapidly treating urban overflow sewage and an operation method thereof, the system comprises an A / O biological treatment system and a magnetic flocculation treatment system; the A / O biological treatment system comprises an anoxic tank, an aerobic tank and a sedimentation tank; the magnetic flocculation treatment system comprises a magnetic seed feeding system, a flocculation agent feeding system, a magnetic flocculation reaction system and a magnetic seed recovery system; the magnetic flocculation reaction system comprises a rapid flocculation reaction tank and a rapid sedimentation tank; wherein the working volume ratio of the anoxic tank to the aerobic tank to the rapid flocculation reaction tank to the rapid sedimentation tank is (1.0-1.5): (5.0-7.0): (0.2-0.3): (0.2-0.3). The method has the advantages that A / O biological treatment and magnetic flocculation are coupled, and the removal performance of nitrogen, phosphorus, organic matters and suspended matters is synchronously enhanced; the biological availability of effluent organic matters is improved, the sewage is oxygenated, and the risk of overflow pollution caused by direct discharge into a river in traditional rapid treatment is reduced.

The invention discloses an efficient liquid organic fertilizer and a preparation method thereof, and belongs to the technical field of organic fertilizers. The organic fertilizer is prepared from the following raw materials in parts by weight: 200-300 parts of livestock breeding wastewater, 50-80 parts of plant straws, 10-20 parts of a pretreating agent, 10-20 parts of EM bacteria, 20-30 parts of a compound microbial agent, 3-10 parts of an accelerant, 1-3 parts of monopotassium phosphate and 0.05-0.2 part of trace elements. The accelerant is composed of sunflower disc extract and sodium laureth sulfate according to the mass ratio of 3: 1; the pretreatment agent is a biochar-TiO2 composite material. According to the method, resource utilization of the livestock breeding wastewater is achieved, the wastewater is converted into the liquid organic fertilizer rich in nutrient elements, high-quality fertilizer resources are provided for agricultural production, harmful substances in the wastewater are effectively removed through combination of biological treatment and physical and chemical treatment technologies, safety and environment friendliness of the organic fertilizer are ensured, and the method is suitable for industrial production. The obtained organic liquid fertilizer has a remarkable effect of improving the yield and quality of potatoes, and has a good application prospect.

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 biology, and discloses a novel polyurethane plastic degrading enzyme and application thereof. The amino acid sequence of the novel polyurethane plastic degrading enzyme MBX1 provided by the invention is as shown in SEQ ID No. 1; the sequence of the coding gene is as shown in SEQ ID No.2. Escherichia coli engineering bacteria constructed by using the coding gene sequence can efficiently express the novel polyurethane plastic degrading enzyme. The method specifically comprises the following steps: cloning an MBX1 gene; the preparation method comprises the following steps: constructing a pET28a-MBX1 expression vector; expression, purification and functional verification of MBX1 protein; the degradation rate of the novel polyurethane plastic degrading enzyme to polyether polyol type polyurethane within 8 hours at the temperature of 50 DEG C and the pH value of 7.5 is 98%. The novel polyurethane plastic degrading enzyme can be applied to biological treatment and related research and development of polyurethane plastics, and has a huge application prospect in biodegradation of the polyurethane plastics.

The invention discloses an efficient and energy-saving aquaculture tail water land-based circulating purification treatment system. The system comprises a floating object and silt separation device, a nano ozone bubble oxidation sterilization device, a nitrogen and phosphorus removal separation device, a microbiological treatment device, a sedimentation tank and a pipeline. The floating object and silt separation device comprises an outer barrel, an inner container barrel, an inner barrel cover, a support, an aeration device, a first water inlet pipe, a first water outlet pipe, a first waste discharge pipe, a second waste discharge pipe, a first collection cup and a base, the outer barrel is installed on the base, the inner container barrel is arranged in the outer barrel, and a precipitation cavity is formed between the bottom of the inner container barrel and a bottom plate of the outer barrel; an interlayer cavity is formed between the outer wall of the inner container barrel and the inner wall of the outer barrel and is communicated with the precipitation cavity; a flow guide hole is formed in the center of a bottom plate of the inner container barrel and communicates with the inner container barrel and the outer barrel. The first water inlet pipe horizontally penetrates through the outer barrel and extends into the inner container barrel in a beveling mode, and an aeration disc on the aeration device is arranged in the lower portion of the inner container barrel. Due to the adoption of the structure, the system realizes high efficiency and energy conservation.