112results about How to "Avoid the risk of secondary pollution" patented technology

The invention discloses an amino-acid-modified chitosan flocculating agent and a preparation method and application thereof and belongs to the field of organic synthesis of high polymer materials. The flocculating agent is prepared from chitosan and amino acid through a chemical reaction, the amino acid is one of tryptophan or tyrosine or phenylalanine, the molecular weight of the chitosan is 110-840 thousand, and the deacetylation degree is 65-95%; the infrared spectrogram of the amino-acid-modified chitosan flocculating agent is provided with a characteristic absorption peak within the range of 1500-1520cm<-1>. By means of the flocculating agent, the molecular weight is increased, the bridging flocculation effect is enhanced, furthermore, the requirement that the residual flocculating agent causes no secondary pollution to a water body can be met, an introduced amino acid functional group contains an aromatic ring structure, and good flocculation capability is achieved for antibiotics in the water body.

The invention relates to a method for preparing a water treatment phosphorus accumulation filler by sintering with household garbage incineration residues, belonging to the field of resource utilization of urban household garbage incineration residues. The method comprises the following steps of: (1) pretreating a raw material: screening the household garbage incineration residues with a drum screen of which the pore diameter is 50-100 millimeters; (2) mixing raw materials proportionally: preparing 60-80 percent by mass of household garbage incineration residues and 20-40 percent by mass of clay, and uniformly mixing the mixture; and (3) preparing a sample and sintering at high temperature: machining the mixture into a filler of which the particle diameter is 5-50 millimeters, sintering at the high temperature after a wet filler is dried in the air naturally, and cooling to room temperature after sintering at the high temperature. In the invention, the clay is taken as a bonding agent, so that soluble salts and heavy metal are prevented from entering a water body, and risk of secondary pollution is avoided; and simultaneously, the water treatment phosphorus accumulation filler has a large capability of adsorbing phosphorus in sewage, and the maximum adsorbing capability is 7-10 times that of artificial wet land filler zeolite.

The invention provides a ceramsite prepared from residues generated in oil containing sludge pyrolysis and a preparation method thereof. The ceramsite is prepared from following raw materials in percentage by weight through burning: 45 to 50% of residues generated in oil containing sludge pyrolysis, 35 to 40% of fly ash, and 10 to 20% of waste glass powder. Residues generated in oil containing sludge pyrolysis are taken as the main raw material and is mixed with fly ash and waste glass powder to prepare the ceramsite having the advantages of lightness, high porosity, high cylinder compressivestrength, low bulk density, and low water absorption; the application range of residues generated in oil containing sludge pyrolysis is enlarged; a new approach is provided for converting residual solid phases in oil containing sludge processing into valuable resources; the residue utilization rate can reach 50%; the problem that the residues generated in oil containing sludge pyrolysis cannot beeffectively processed and radically utilized is solved, sustainable development of oil fields is realized, and good social benefits and economic benefits are generated.

The invention discloses a method and a device for precisely processing nuclear power station condensation water. The device comprises a prefilter, a cation exchanger, a resin catcher A, a cation and anion exchanger, a resin catcher B, a pipeline inlet and a pipeline outlet, wherein the pipeline inlet, the prefilter, the cation exchanger, the esin catcher A, the cation and anion exchanger, the resin catcher B and the pipeline outlet are successively connected in series; a valve 1 is arranged between the pipeline inlet and the prefilter; a valve 2 and a valve 3 are arranged between the prefilter and the cation exchanger; a valve 4 is arranged between the resin catcher B and the pipeline outlet; the inlet end of the valve 1 is connected with one end of the valve 5; the other end of the valve5 is connected with the inlet end of the valve 3; the outlet end of the valve 2 is connected with one end of a valve 6; and the other end of the valve 6 is connected with the pipeline outlet. According to the method and the device, the advanced treatment requirement on the condensation water under different operation working conditions can be satisfied.

The invention discloses a graphene biological compound enzyme virus removal filter element and a preparation method of the filter element. The filter element comprises an active carbon filter layer, and a coarse filter screen and further comprises an HEPA (high efficiency particulate air) filter screen, a graphene biological compound enzyme solution and an adhesive. The invention further providesthe preparation method of the graphene biological compound enzyme virus removal filter element. The method comprises the steps of preparing a graphene biological compound enzyme solution, adding the adhesive into the graphene biological compound enzyme solution to prepare coating slurry containing graphene and a bio-enzyme, coating the HEPA filter screen with the graphene biological compound enzyme coating slurry, and compounding the graphene biological compound enzyme HEPA filter screen, the coarse filter screen and active carbon to prepare the filter element. According to the graphene biological compound enzyme virus removal filter element and the preparation method, the graphene biological compound enzyme is added into the filter element to prepare the purification filter element with excellent antibacterial and virus killing effects.

The invention discloses a microbe-assembly-synthesis-based arsenic polluted soil restoring and fixing agent, and preparation and application methods thereof. Many iron-base materials for arsenic polluted soil restoration at present influence the structural properties of the soil due to the introduction of abundant exogenous iron, and the iron salt fixing agent can easily acidify the soil after being applied, thereby restricting the development of the soil restoring and fixing agent in the aspect of soil restoration. In order to solve the problems above, nano alpha-Fe2O3 is used as a central substance and coated by mycelial fungus hypha to prepare the restoring and fixing agent for arsenic polluted soil. When the synthesized product is proportionally and uniformly mixed with soil, after seven days, the fixing rates for water-soluble arsenic and effective-state arsenic in the arsenic polluted soil respectively reach 83.2% and 96.4%. The fixing agent has the advantages of simple preparation process, high efficiency, no toxicity or harm and no secondary pollution, is biodegradable, can not destroy the physicochemical properties of the soil, and thus, is an environment-friendly fixing agent.

The invention provides a method for ecologically purifying nitrogen and phosphorus in surface sediment of an aquaculture system. By using the ecological niche and life characteristics of benthic diatom and filamentous algae and through biomass proportioning and vital activity of the benthic diatom and filamentous algae, the aims of efficiently, economically and environment-friendly purifying nitrogen and phosphorus in the sediment surface layer and overlying water in an aquaculture environment are achieved.

The invention discloses a polyamide tree-like heavy metal chelating agent and a preparation method thereof. The polyamide tree-like heavy metal chelating agent is a tree-like organic compound with variant fractal side chain or a linear side chain adopting a trimerization triazine ring as an inner core, and polyamide with dithiocarboxylic acid groups as the fractal side chain, and with aminothiocarboxylate at the tail of the side chain; the polyamide tree-like heavy metal chelating agent can be used in the range of pH 1-14, has extremely high acid and alkali resistant capacity and long-term stability; and the heavy metal clathrate or chelate formed by the polyamide tree-like heavy metal chelating agent and heavy metal has durable stability, and the secondary pollution risk of the heavy metal in solid waste can be effectively reduced even completely eradicated.

The invention discloses an iron-based biochar material as well as preparation and application thereof. In the invention, by adopting nano alpha-Fe2O3 as a center substance and wrapping the nano alpha-Fe2O3 with aspergillus niger hyphe, the iron-based biochar material for arsenic-polluted soil remediation is prepared through anoxic high-temperature carbonization. The synthesized iron-based biochar material is uniformly mixed with soil according to certain proportion; and after a period of time, the fixed rate of the water-soluble state arsenic and effective-state arsenic in the arsenic-polluted soil reaches 59.6% and 66.2% respectively. The iron-based biochar material disclosed by the invention has the advantages of easiness in preparation, high efficiency without toxicity, biodegradability and no secondary pollution or damage of physicochemical properties of soil and is an environment-friendly fixing agent.

The invention provides a comprehensive utilization method for organic resin wastes. The method comprises the following steps: (1) mixing the pretreated organic resin wastes with water and auxiliaries,and carrying out slurrying to obtain a slurrying liquid; (2) mixing the slurrying liquid with a carbon-derived substance to prepare water coal slurry; (3) carrying out a gasification reaction on thewater coal slurry at an oxygen-containing atmosphere, the temperature 1100-1600 DEG C and the pressure of 0.5-4.0MPa to obtain a gaseous product and liquid molten slag; and (4) carrying out shock chilling separation on the gaseous product and the liquid molten slag to obtain a mixed gas and glass-state residues. According to the comprehensive utilization method, a water coal slurry gasification technology is applied to the fields of waste treatment and utilization, organic components in the organic resin wastes are gasified at high temperature within short time and are converted into the gaseous product which can be comprehensively utilized, and toxic and harmful substances such as trace heavy metals are fixed in the glass-state residues, so that not only is the aim of harmless treatment of the organic resin wastes achieved, but also the comprehensive utilization of the organic resin wastes can be realized.

The invention relates to the technical field of biological remediation of organic polluted soil, in particular to a strengthening remediation method and device for a bioreactor. The three-in-one windpower integration device comprises a leachate reciprocating distribution system, a power supply system and an electrolyte nutrient supply system pipeline; and the leachate reciprocating distribution system is arranged at the bottom of the device, the power supply system is composed of at least one electrode group of a sandwich-liked structure, and the electrolyte nutrient supply system is composedof the electrolyte nutrient supply system pipeline and an intermediate layer electrolyte nutrient supply system pipeline. According to the method and the device, the cathode design of a wind power integration mode effectively improves the anoxic environment at the bottom of a reactor body, so that secondary pollution is avoided and organic pollutants are thoroughly removed through the leachate circulation design, the remediation efficiency of the bioreactor technology on the organic polluted soil is effectively improved, and the method is an effective realization method for strengthening application of the bioreactor repair technology.

The invention belongs to the technical field of environmental protection, and discloses a method for preparing a water treatment biological activity accelerant from winery wastewater treatment sludge. According to the method disclosed by the invention, the sludge generated by treatment of winery wastewater is used as a raw material and is prepared into the water treatment biological activity accelerant through the steps of dehydration, drying, modification, granulation and screening. The method is adopted to perform treatment and resource utilization on the winery wastewater treatment sludge, so that a now way for treating brewing sludge is opened up, the prepared novel water treatment biological activity accelerator improves the sewage treatment efficiency at the same time, and the dosage of nutrients is reduced, so that wastes are changed into treasures, and energy conservation and emission reduction are realized.

The invention relates to an outdoor mobile intelligent pump house used for emergency water supply. The pump house includes a full frequency conversion water supply equipment system, an intelligent electric control system, a security monitoring system, a water quality safety assurance system, a pump house environment system, a pipe network abnormity protection system, a GIS system, a water supply intelligent cloud management system, a human factor engineering management system, and an operation and maintenance assurance system. The outdoor mobile intelligent pump house used for emergency watersupply needs one main inlet pipe connected with one end of the temporary pipe network and one main outlet pipe connected with the other end of the temporary pipe network. The invention provides an outdoor mobile intelligent pump house which can be used for emergency water supply, The pump house has the advantages of simple structure and convenient use, and can realize the intelligent and safe water supply management of the emergency water supply in the reconstruction of the old residential area or the temporary pipe network emergency water supply in the case of natural disasters, ensure the water consumption and pressure requirements of users, avoid the secondary pollution risk, have flexible transportation, convenient installation and stable operation.

The invention provides a technological method for regenerative recycling treatment of waste mineral oil. The method comprises following steps: the waste mineral oil is pumped into a pretreatment tankand subjected to sedimentation and dehydration, and light oil and water are separated out; the pretreated raw material is discharged from the lower middle part of the pretreatment tank and fed to a distillation tower for distillation, the material is heated by a heating furnace and then returns to the tower, and a gas phase component in the distillation tower is condensed and subjected to gas-liquid separation and then enters a product buffer tank; the material in the product buffer tank is pumped into a refining tower for refining; the material at the bottom of the treatment tank and filter residues are collected and spirally conveyed into a thermal desorption kettle together with heavy oil residues at the bottom of the distillation tower and high-viscosity waste oil. According to the technological method, large-scale efficient treatment of multiple kinds of waste lubricating oil is realized, operability is high, the technological process is simple, heavy oil and high-viscosity oil are deeply recycled, so that yield of residues is reduced, operating cost of a follow-up treatment enterprise is greatly reduced, and oil rate of the residues can be as low as 1% or lower.

The invention belongs to the technical fields of comprehensive utilization of solid wastes and production of flocculants, and particularly relates to a method for preparing polysilicate aluminum by using a waste catalyst. The method comprises the following steps: carrying out a heating and pressurizing reaction on a sodium hydroxide solution and an FCC waste catalyst, and performing filtration toobtain an aluminosilicate solution; and dropwise adding sulfuric acid or hydrochloric acid into the aluminosilicate solution to adjust the pH value to 0.8-1.7, and performing curing for 1-2 h to obtain liquid polysilicate aluminum sulfate or polysilicate aluminum chloride. The method for preparing polysilicate aluminum by using the waste catalyst avoids the risk of secondary pollution caused by leaching of heavy metal ions using an acid leaching process, and is a polysilicate aluminum preparation method having the advantages of simple process route, low production cost and high Al2O3 and SiO2dissolution rate.

The invention discloses a method and equipment for linear batch assembly of a medical drug package material. The equipment for linear batch assembly of the medical drug package material comprises a frame body assembly, a main conveying chain assembly, a pipe feeding assembly, a rubber plug loading assembly, a tablet loading assembly, a tablet tracking assembly, an ultrasonic welding assembly, a membrane blanking assembly, a membrane conveying assembly, a front welding membrane assembly, a side welding membrane assembly, a discharge assembly and an electronic control assembly. The pipe feeding assembly, the rubber plug loading assembly, the tablet loading assembly, the tablet tracking assembly, the ultrasonic welding assembly, the membrane blanking assembly, the membrane conveying assembly, the front welding membrane assembly, the side welding membrane assembly, the discharge assembly and the electronic control assembly are mounted on the frame body assembly from front to back in order. The equipment can be used for linear batch assembly of the medical drug package material. The method and the equipment provided by the invention have high production efficiency, ensure significant improvement of quality, greatly lower the labor intensity, reduce the intermediate turnover links, and effectively avoid the potential secondary pollution risk.

The invention discloses bacillus coagulans Daoduo 4 as well as a screening method thereof and further discloses a microbial preparation containing bacillus coagulans Daoduo 4 as well as a preparation method and an application of the microbial preparation. The microbial preparation is simple to culture, stable in structure, non-toxic, harmless, free of side effects and capable of effectively inhibiting breeding and growth of harmful microorganisms such as putrefying bacteria, pathogenic bacteria and the like, has relatively high stress resistance to the environment, has the advantages of high temperature resistance, acid resistance, choline resistance and the like and can inhibit growth of harmful bacteria in garbage, feces and sewage under complicated conditions, remove odor, reduce pollution and improve the environment. Besides, the bacillus coagulans can effectively remove VOCs (volatile organic compounds) and remarkably reduce harm of decoration pollution to human health after being applied to newly decorated houses and other places.

The invention discloses an online surface cleaning monitoring and treatment device and method for an optical element. The device comprises an optical element surface particulate matter online detection system, a dark field imaging system of which is located above the optical element and is perpendicular to the optical element; a cleaning treatment device, used for cleaning the optical element andcapable of realizing location moving of a wiping mechanism through a horizontal motion mechanism and a vertical telescopic mechanism, so as to wipe the surface of the optical element; and an upper computer, connected with the optical element surface particulate matter online detection system and the cleaning treatment mechanism in a communication manner. The device and the method which are disclosed by the invention can be applied to real-time online monitoring of the surface of the optical element and clean the surface in time according to a result monitored by a dark field, is easy and convenient to operate, and avoids the risk of secondary pollution caused by manual work, thus reducing damage to the optical element and effectively guaranteeing stable operation of a high-power solid laser device.

The invention discloses a technological method for recycling treatment of waste emulsified liquid. The technological method comprises the following steps: (1) filtering the waste emulsified liquid andconveying the waste emulsified liquid into a pre-treatment tank; raising the temperature and stirring; adding a separation agent; dividing separated emulsified liquid into an upper layer, a middle layer and a lower layer; (2) conveying a lower-layer material into a centrifugal machine and separating to obtain waste dreg and wastewater I; carrying out high-temperature desorption on a middle-layermaterial; after condensing a gas phase, thus obtaining an oil-water mixture; meanwhile, obtaining wastewater II; conveying an upper-layer material into a distillation tower and carrying out vacuum treatment to obtain recyclable fuel oil; (3) carrying out secondary demulsification, Fenton oxidation and biochemical treatment on the wastewater I of step (2) and then discharging; carrying out the Fenton oxidation and the biochemical treatment on the wastewater II and discharging; (4) conveying tower-bottom waste dreg of the distillation tower in step (2) into a thermal desorption device and carrying out the high-temperature desorption; taking a generated gas phase as fuel gas for thermal desorption. The technology disclosed by the invention has the advantages that the quantity of the generatedwaste dreg is reduced, the oil content of residues can be reduced to be 1 percent or lower and the precipitation of leachate in treatment processes of backfilling and the like can be effectively prevented.

The invention discloses a hard surface vacuum cleaner and a cleaning method thereof. The hard surface vacuum cleaner comprises a casing, a negative pressure source and a main water tank, wherein a nozzle on the casing and a suction pipe communicated with the nozzle are matched to form a water-gas mixed suction channel, and the water-gas mixed suction channel is connected with a centrifugal fan impeller to form a water-gas vortex separation structure; a water-gas mixture vortex deceleration cabin, a temporary solid dirt storage chamber and a temporary liquid dirt storage chamber which are communicated are further formed in accommodating space of the casing; the water-gas mixture vortex deceleration cabin and the temporary solid dirt storage chamber are formed between the negative pressure source and the nozzle, so that a sewage and dirt storage and separation channel is formed; and the temporary liquid dirt storage chamber is provided with an exhaust device communicated with the outside, and a gas separation channel is further formed, so that vacuum cleaning of a hard surface is realized. A structure required for water-gas separation is simple, and the water-gas separation effect is good.

The invention belongs to the technical field of water quality monitoring of water body, and provides a deep aquifer multiparameter in-situ monitoring apparatus. The deep aquifer multiparameter in-situ monitoring apparatus comprises a ground control management module, a microprocessor and a detection module which are connected in order. According to the invention, a multiparameter data processing module is arranged in the ground control management module, a linear fitting module is arranged in the microprocessor, a temperature compensating module and a voltage drift compensation module which are respectively used for performing temperature compensating and voltage drift compensation on the linear fitting module, the microprocessor is connected with the ground control management module through a CAN bus communication circuit, a pH detection circuit is arranged in the detection module, and a pressure temperature sensor detection circuit is used for testing temperature and pressure of deep aquifer. The invention also provides a deep aquifer multiparameter in-situ monitoring method. The method comprises the steps of correction of a detection module, placing, measurement, correction of pH value and the voltage value of a standard solution, establishment of a pH linear equation and calculation. The conception of the in-situ monitoring apparatus is ingenious, and the technical problem of authenticity of the to-be-detected information is easily weakened through sampling and monitoring in the prior art can be solved.