4536 results about "Water pollution" patented technology

An on-line sensing system and method for monitoring in real-time thermal-oxidative breakdown, water contamination, and/or fuel dilution conditions in operational engine lubricating oils. The method of the invention includes an electrochemical impedance analysis technique specific to the particular oil to be monitored. Sensing devices having of at least two electrodes are configured for direct installation in an existing access port, or drain port, of a lubricating oil reservoir. An AC voltage waveform is applied to the sensing device (preferably less than 100 Hz) to produce voltage and current responses between the appropriate electrodes contacting the oil. The magnitude impedance |Z| and phase angle components of the complex impedance are used to characterize the quality and/or condition of the engine oil under test. The system also provides an electrical indication indicative of the percentage remaining useful life of the oil.

A mobile apparatus and method for recycling an invert emulsion based drilling fluid, in which the invert emulsion based drilling fluid includes an oleaginous component and an aqueous component. The apparatus includes an emulsion breaking tank, a water treatment tank, a filter press, and hydrocarbon filters. The method includes: mixing said invert emulsion drilling fluid with a emulsion breaker, wherein the emulsion breaker is a mixture of an alkyl glucoside and an alkane sulfonate; and separating the oleaginous component of the invert emulsion drilling fluid from the aqueous component of the invert emulsion drilling fluid. The method preferably utilizes an emulsion breaker that is a combination of an anionic surfactant, a nonionic surfactant and an alkyl polyglycoside surfactant.

The invention discloses an advanced treatment system and method for high-concentration percolate in a comprehensive garbage disposal plant, belonging to the field of industrial waste water treatment. The system is formed by connecting a regulating tank, a coagulative precipitation tank, an upflow anaerobic sludge bed reaction tank, a primary anoxic and aerobic membrane bioreactor, advanced oxidation treatment equipment, a secondary anoxic and aerobic membrane bioreactor, nanofiltration membrane treatment equipment, an ozone contact tank and an active carbon filtering tower in sequence. According to the system, garbage percolate can be treated comprehensively, different pollutants in garbage percolate are treated in a classified way by combining physical, chemical and biological treatment,advanced treatment of garbage percolate is realized, and classified treatment for removing pollutants such as organic matters, heavy metals, ammonia, nitrogen and the like is performed, so that treated effluent strictly reaches the requirement of water pollution discharge degree limit in the Household Garbage Landfill Pollution Control Standard, the system runs stably for a long time, and treatment cost is lower than that of a secondary disc pipe reverse osmosis membrane process.

Multiplexed lateral flow assays, related methods, and devices are disclosed which are capable of simultaneously detecting multiple analytes. The assays are preferably immunoassays and can be multiplexed spatially, spectrally, and both spatially and spectrally. Multiplexed assays are disclosed employing quantum dots for applications including the detection of human proteins and the monitoring of microorganisms relevant to water contamination. The multiplexed assays can employ one or more species of Surface Enhanced Raman Scattering nanoparticles, with one or more species having a unique Raman shift spectrum. The invention is widely adaptable to a variety of analytes such as biowarfare agents, human clinical markers, and other substances.

The invention relates to a waterproof high-strength gypsum-based concrete brick or building block and a production method thereof. The waterproof high-strength gypsum-based concrete brick or building block mainly contains gypsum-based composite binding agent, coagulation accelerator and filler. The weight proportions of the components are as follows: 10-100% of gypsum-based composite binding agent, 0-6% of coagulation accelerator, 0-90% of filler, 0-1% of early-strength agent, 0-1% of water-reducing agent, 0-6% of lime and 0-15% of gypsum hemihydrate. 80% of the raw materials of the high-strength gypsum-based concrete brick or building block are industrial byproducts, so that the invention reduces the production cost, realizes energy conservation and discharge reduction, avoids the land occupancy and water pollution caused by chemical gypsum, ore slag, coal ash, furnace slag, alkali waste and carbide slag, and protects the environment.

The invention discloses a sudden water pollution accident analog simulation and visualization service system. The system is characterized in that a B/S (browser/server) structure is adopted, an analog simulation computing service of sudden water pollution accidents is provided at a server side, simulation prediction of pollutant diffusion trend is performed by the aid of a water power model and a water quality model according to water quality and hydrological monitoring data, sudden accident information and pollutant information, and simulation results are stored into a database; and the simulation results are associated with space information by means of the WebGIS technique, and spatial and temporal change dynamic effects of sudden water quality pollution accidents are presented in a GIS (geographic information system) map form on a client browser and used for emergency disposal and decision support for the sudden water quality pollution accidents. The sudden water pollution accident analog simulation and visualization service system is available for remote operation and network access, meets the current requirements on rapid and effective analog simulation services of sudden water pollution accidents, and can provide services for various water environmental monitoring systems and water quality monitoring early warning systems.

A method and apparatus is disclosed for treating and processing an oil, water or oil and water-contaminated substrate such as oil field waste. The substrate may be pretreated with water and/or surfactant and may be mixed under low shear conditions with a base such as a compound containing alkaline earth or lime and an optional catalyst. Mixing the substrate with the base creates a heat. Next, the substrate may be mixed with an acid such as sulfuric acid. As the substrate is mixed, it causes an exothermic reaction with a heat that vaporizes the oil, reaction products and water. Recoverable constituents in the vapor can be condensed in a vapor collection system. The treated substrate may be essentially free of oil and has a controlled water content and pH that can be adjusted according to the use of the end dry product.

The invention discloses a preparation method of functional polymer, in particular to the preparation method of activated carbon composites which is used in water treatment in the technical field of environmental purification material. The procedures of the method are as following: firstly, putting powdered activated carbon materials into nitric acid to stir, wash, filter and dry; secondly, scattering monomer of polymer evenly into solvent to prepare into solution; thirdly, putting the solution obtained from the second procedure into the active carbon processed in the first procedure to stir evenly; fourthly, putting the solution into a sealed container in zero DEG C; filling the container with nitrogen and sealing the container for the solution to make polyreaction; washing up the obtained complexes with ethanol, then drying up the complexes and then obtaining a polymer which is active carbon complexes. The functional polymer which is activated carbon composites prepared by the invention keeps high specific surface, has functionality from polymer, has good adsorption performance to the metallic ion and organic matter in aqueous solution and is a novel composite material for water pollution treatment and environment purification.

A composition for metal surface treatment which comprises an aluminum ion, a magnesium ion, a manganese ion, a water-soluble organic resin, an acid and water; and a surface treated metal material which has been treated with the composition. The resultant surface treated metal material is free from the danger of water contamination owing to chromium, since the composition is free of chromium, and also is excellent in both electrical conductivity and corrosion resistance. Accordingly, the metal material can be used in a wide variety of applications in place of a conventional chromate-treated steel sheet and the like.

The invention provides an integrated watershed management system and relates to the technical field of watershed management. The integrated watershed management system comprises a knowledge management module, a monitoring module, a forecast module, a project evaluation module, and an emergency decision module. The knowledge management module is used for acquiring related knowledge of a watershed and constituting a knowledge base, a model base and a method base of the watershed to be stored in a database. The monitoring module is used for monitoring lake inflow flux and total pollutant amount of the watershed. The forecast module performs statistic analysis and trend prediction to hydrology and water quality of the watershed. The project evaluation module provides a reference scheme for water pollution control of the watershed. The emergency decision module generates corresponding emergency decisions as to water pollution warning and emergency accidents. By the aid of the integrated watershed management system, the monitoring module and the forecast module perform real-time monitoring and warning to the watershed, and corresponding emergency decisions are made through the emergency decision module as to different emergency accidents or warning information, and furthermore, the project evaluation module provides reference for water pollution control scheme planning.

The invention discloses a water pollution monitoring automatic sampling decision making system which comprises an on-line measurement sensor, a pretreatment circuit, a singlechip, a wireless transmission module and a sampling device, wherein the on-line measurement sensor is an on-line monitor sensing system which is composed of a pH value sensor, an electric conductivity sensor, a dissolved oxygen sensor, a cloudiness sensor and a temperature sensor; the on-line monitor sensing system sends multiple paths of collected signals to the signal input end of the singlechip with an absolute value and relative value algorithm for five water quality general parameters (the pH value, the electric conductivity, the dissolved oxygen, the cloudiness and the temperature) through the pretreatment circuit; and the singlechip and the wireless transmission module realize communication linkage through an interface circuit, and the control output end of the singlechip is connected with a drive circuit of the sampling device through the interface circuit. The water pollution monitoring automatic sampling decision making system provided by the invention can be used for realizing that a water quality sampler can monitor multinomial water-quality indexes on same monitoring point, and has the advantages that the structure is simple, the using cost is low, the working flow of a monitoring and collecting system is more reasonable, and the like.

The invention discloses a magnetic Co ₃ o ₄ The ‑C nanometer material and its preparation method and the application of activated persulfate as a catalyst in wastewater treatment belong to the technical field of water pollution control. In this method, cobalt metal-organic framework compounds are used as precursors, which are calcined at high temperature in a certain atmosphere, and finally magnetic Co ₃ o ₄ ‑C nanomaterials. The porous carbon component in this material not only acts as a carrier of metal oxides to evenly distribute the catalytic sites, but also effectively enriches pollutants in water to improve the degradation efficiency of the system; the magnetic Co in this material ₃ o ₄ The components can be used as heterogeneous catalysts to efficiently activate monopersulfate to generate free radicals to degrade pollutants in water bodies. The method has the characteristics of high efficiency and convenience, wide application range of pH, catalyst recovery by external magnetic field, good recyclability, and environmental friendliness, and has great potential in the actual treatment and application of organic wastewater.

The invention discloses a method for treating organic wastewater by using double catalysts to heterogeneously activate persulfates, belonging to the technical field of water pollution control. According to the method, nano copper oxide and zero-valent iron particles are used as a combined catalyst to activate the persulfates to generate free sulfate radicals with strong oxidizing property, so that refractory organics are removed from the wastewater. Compared with a homogeneous persulfate water treatment technology, the method has the advantage that the heterogeneous catalysts can efficiently and continuously activate the persulfates to achieve a heterogeneous activation effect due to the properties of relatively large specific surface area, relatively high catalytic activity and the like. The double-catalyst heterogeneous persulfate activation water treatment technology established by the method disclosed by the invention is applicable to treatment of various kinds of organic wastewater, is high in efficiency, good in durability and convenient in operation, can efficiently remove toxic and harmful pollutants from the wastewater within a relatively wide pH range, provides a broad prospect for treating toxic, harmful and non-biodegradable organic wastewater, and has a great application potential in the field of environmental pollution treatment.

The invention discloses a soil disinfection high-temperature sterilizing desinsection vehicle which comprises a frame crossbeam and frame side supporting plates fixed on both ends of the frame crossbeam; a gear box is fixedly connected below the frame crossbeam; the front end of the gear box is provided with a connecting frame; the rear end of the gear box is provided with a rotary blade shaft; both ends of the rotary blade shaft are supported to the lower end of the frame side supporting plates; the rotary blade shaft is provided with a rotary blade; an electrical heating device with a downward opening is wrapped on the rotary blade. The approximate central part of the frame crossbeam is provided with an inclined upward expansion oil cylinder. Apart from the rotary tillage of the soil, the vehicle kills the germs in the soil and the pests with virus at high temperature produced by the electrical heating device, can effectively kill the germs and pests including root knot nematode and has high operation efficiency; because no highly toxic pesticide is used, public nuisance, such as water pollution, soil pollution, over standard of pesticide residue in agricultural products, etc. brought by the highly toxic pesticide are eradicated.

The invention discloses a method for determining ecological dredging range of water body pollution bottom sediment, comprising steps of: performing space gridding to a water area; setting a sampling point, and obtaining bottom sediment pollution level attribute information of the sampling point; determining the water area requiring dredging after excluding the water area without dredging; processing space interpolation to the bottom sediment attribute information of the water area to cover an unsampled water area with the attribute information, and obtaining the mean value of the single attribute information of the space interpolation in a grid cell, and grading the attribute, and rounding the attribute mean value of the grid cell hierarchically; performing dimensionless standardization treatment of 0-1 numerical values to the hierarchically rounded attribute information, and obtaining the evaluation coefficient of each attribute of the grid cell, summing the evaluation coefficients of all attributes of the grid cell to obtain a comprehensive evaluation value of the grid cell; classifying the comprehensive evaluation values of all grid cells by a natural breaking method of geographic information software and determining the recommended dredging area as the ecological dredging range with high comprehensive evaluation value.

The invention provides a multi-layered aquifer underground flow system-based underground water pollution simulator, which comprises a simulation groove, a pressure measurement device, water head adjustment devices and a rainfall device, wherein the simulation groove comprises a seepage groove, an upstream water tank and a downstream water tank which are positioned on two sides of the seepage groove; front and back sides of the seepage groove are respectively provided with uniformly distributed sampling holes and pressure measurement holes, and the pressure measurement holes are connected with the pressure measurement device; two water head adjustment devices correspond to the upstream water tank and the downstream water tank respectively, and each water head adjustment device comprises a bracket, an overflow box, a water pipe and a lift rod; the rainfall device is positioned above the seepage groove, rainfall holes are uniformly distributed on a pipeline of the rainfall device; and one end of the pipeline is sealed, and the other end of the pipeline is connected with a water source. The multi-layered aquifer underground flow system-based underground water pollution simulator can simulate an underground waterflow system of a plurality of aquifers and aquitards, is convenient in measurement, and has small error.

A chamber having an inlet for receiving polluted storm-water runoff and an outlet for the storm water to flow out. Within the chamber are one or more baffles forming gaps and having apertures. The gaps define a longer water flow route through the chamber and the apertures disperse the storm water within the chamber. This increases storm-water residence time which encourages settling of particulate matter such as sand and grit. In alternative embodiments, there are included a screen, a collection reservoir, and/or a pivotal filter for further dispersing, detaining, and/or filtering the storm water.