791 results about "Environmental quality" patented technology

The invention discloses an in-situ restoration method for heavy metal polluted soil, which comprises the following steps of: uniformly mixing submicron or nano iron, coal ash, a magnesium-containing preparation and bentonite in proportion by weight of (5-25): (40-50): (1-10): (15-50) to obtain a heavy metal polluted soil restoration agent, after applying the heavy metal polluted soil restoration agent on the surface of the heavy metal polluted soil at the thickness of 1-4cm, uniformly mixing a 20cm thick polluted soil surface layer with the applied restoration agent by plowing, and after 3-6 months, reducing heavy metals such as cadmium, chromium, mercury, lead, arsenic, nickel, zinc, copper, magnesium and vanadium in the heavy metal polluted soil into low-valence immobilized heavy metals to lose biological effectiveness and realize the in-situ restoration for the heavy metal polluted soil. However, the environmental quality of restored soil satisfies the requirements of second-level standard values in Environmental Quality Standards for Soils (GB 15618-1995) in China.

The invention relates to a method for remediating cadmium contaminated soil of a vegetable field in situ by compounding bio-charcoal and an organic fertilizer. The method comprises the following steps of: applying a passivation material obtained by compounding the bio-charcoal and the organic fertilizer in a mass ratio of 1:1 to a surface layer of soil of a cadmium contaminated vegetable field, fully and uniformly mixing the passivation material and the soil in a plowing layer with the thickness of 0 to 20cm, judging the contamination level of the soil according to environmental quality standard for soils GB15618-1995, and ensuring that the application rate of the passivation material is not less than 0.5 percent of the weight of dry soil, namely 750kg/mu when the cadmium concentration of the soil is 1.0 to 2.9mg/kg. The invention has the advantages that: raw materials of the passivation material are wide in source and low in cost, the application method is simple and has a remarkable effect of remediating the cadmium in the soil in a passivation way, and the risk of secondary contamination is avoided; and the bio-charcoal is applied into the soil, so the passivation material has the effects of reducing the discharge of greenhouse gas of farmland ecosystems, increasing the content of organic carbon of the soil, improving soil structures and the like, and has huge popularization and application value.

The invention relates to an integral treatment process of the oily sewage of an oil field. The process flow in the invention is as follows: settling sand, removing oil, breaking emulsion through air flotation, treating with a microwave-enhanced Fenton system, performing flocculation and air flotation, performing precision filtering, performing catalytic ozonation with an activated carbon fiber felt, and performing ultrafiltration to obtain clean water. By adopting the integral treatment process, the operations of oil removal, emulsion breaking, advanced oxidation, flocculation, catalytic ozonation and membrane separation can be continuously realized. The floor space of equipment in the invention is small; the treatment process is suitable for various oily sewage and has obvious treatment effect; the removal rate of the chemical oxygen demand (COD) of raw water is more than 96%, and the oil content and the removal rate of suspended matters are 100%; and the turbidity of the obtained water is 4-6 NTU. The main indexes of the process provided by the invention such as the COD, oil content, suspended matters, turbidity and the like are better than those of the current oily sewage treatment process in oily sewage treatment; and the quality of the treated water can meet the related rules of the Integrated Wastewater Discharge Standard (GB8978-1996) and the Environmental Quality Standards for Surface Water (GB3838-2002).

The invention relates to the field of environmental protection and aims at providing a mobile monitoring system for displaying air environmental quality pollution level of a road in real time. The system is capable of achieving real-time monitoring of pollutant discharge of an on-road motor vehicle, instantaneously learning the road traffic pollution degree and guiding green travel of people, and is beneficial to improvement of the environment monitoring management level. According to the technical scheme, the mobile monitoring system for displaying the air environmental quality pollution level of the road in real time is characterized by comprising a plurality of vehicle-mounted fixed ends with data acquisition and transmission modules, and a data receiving terminal with a data receiving module, wherein the plurality of vehicle-mounted fixed ends are arranged on various vehicles through adsorption devices separately; the data receiving terminal is arranged in an environmental management department; and each data acquisition and transmission module comprises various monitoring sensors, a digital transmission module, a GPS module, a power module and a mainboard connecting various components.

The invention relates to a compound catalytic material for purifying harmful gas. Deionized water is used as dispersant to compound nano-catalytic material, rare earth compound, p-type semiconductor, antimicrobial, plant extract and anion powder. The compound catalytic material can fast and thoroughly eliminate free formaldehyde, benzene homologue, ammonia and TVOC harmful gas. The compound catalytic material does not require ultraviolet light, has simple use and low cost and does not have toxic side effect and secondary pollution, and the purification effect can last for more than five years without rebound. At the same time, the compound catalytic material prevents bacteria, germina and mildew from invading human body, removes peculiar smell, odor, smoke, leather flavour, paint flavour and the like, increases anion and far infrared ray which are beneficial to human body and improves indoor air environmental quality comprehensively. The experiment detection shows that formaldehyde clearance rate within 24 hours is 91.6 percent; benzene clearance rate is 88.9 percent; ammonia clearance rate is 90.5 percent; TVOC clearance rate is 87.6 percent; sterilization and bacteriostasis rate is 99.99 percent; mould prevention is 0 grade; and acute oral toxicity is tested as actually nontoxic class.

The invention relates to an ecological restoration and purification method for water of lake and pool wet land. The method is characterized by comprising the following treatment steps sequentially: a first stage, a second stage and a third stage, wherein the first stage comprises the steps of pumping the water of the lake and pool wet land to dryness sectionally, performing activity, disinfection and dehydration treatment on sludge of the lake and pool wet land, prefabricating and mounting a submerged aeration facility, planting a submerged vegetation community, and filling in the water of the original lake and pool wet land; the second stage comprises the step of putting water purification bugs into the water for treating suspended matters in the water and purifying the water, such as algae and detritus; and the third stage comprises the steps of planting floating-leaved plants in the water, and configuring aquatic animals capable of eating partial aquatic plants for restoring a food chain of a water ecosystem. The method can ensure that the restored or purified water can reach a Category III or above primary indicator of Environmental Quality Standards for Surface Water (GB 3838-2002); the water purification effect is enduring; and both a symptom and a root cause are treated.

The invention relates to a closed or semi-closed landscape water body governance method including an aeration oxygen filling process, a biological treatment process and an artificial ecological reconstruction process; the biological treatment process includes adding microbial agents and biological growth-promoting agents; the artificial ecological reconstruction process includes bionic carbon fiber ecological grass and a compound ecological floating island technology; the water quality of the water body is improved by the aeration oxygen filling process and the biological treatment process; an ecological system is reconstructed and restored by the artificial ecological reconstruction process, and the water body landscape function is restored and promoted. The method can effectively improve the water quality of the water body, rapidly restores the water body ecological system and the self purification ability, and restores and promotes the water body landscape function; the water quality of the water body after governance achieves ''environmental quality standards for surface water'' (GB3838-2002) IV-class water standards. The method allows water quality improvement, ecological restoration and landscape promotion to be combined, has the characteristics of energy saving, good algae inhibiting effect, fast ecological restoration, low governance cost and the like, and has relatively good social benefits and ecological benefits.

The disclosed invention is an improved method for treating ethanol distillation still bottoms by recovering, through solids separation and pressurized membrane filtration, pure water from still bottoms for human consumption or reuse, and concentrating the solids with beneficial properties recovered before anaerobic digestion. The invention is an improved process because it can reduce the volume of solids to manage, recovers the water from the fermentation still bottoms while pasteurized, maintains the chemical and physical properties of solids for beneficial property recovery, improves ethanol and energy efficiency, and results in clean discharge to the environment including carbon dioxide recovery. A bioreactor produces a gas rich in methane fuel from the concentrate to power the pressurized filtration process and an aqueous ammonia solution to recover or recycle. This invention improves environmental quality, conserves energy, and produces a beverage water for bottling that can be of an organic origin with reliable source and quality.

The invention discloses an environmental protection monitoring system of the Internet of Things. The environmental protection monitoring system of the Internet of Things includes a central monitor, a water environment monitoring terminal, an atmospheric monitoring terminal, a noise monitoring terminal, a solid waste collection and transportation monitoring terminal, a video monitoring terminal and the above monitoring The regional video monitoring and early warning system, the environmental quality management system, the pollution source management system, the public information publishing system, and the environmental protection comprehensive business office system are connected through the network; The transportation monitoring terminal and video monitoring terminal can fully grasp the water environment, air, and noise information, and supervise key pollution sources, which expands the monitoring area and reduces monitoring costs.

The present invention relates to a computational fluid dynamics (CFD) and multi-data sources-based urban real-time global environment estimation method. The method is based on historical data of urban environment monitor stations, global mesoscale meteorological forecast results, national meteorological data, urban major pollutant source data, a urban geographical three-dimensional model and road surface real-time monitor data of a motor vehicle exhaust detection system, CFD is used as a calculation engine, an environment quality mode is adaptively switched according to meteorological information, a multiscale grid discrete urban model is used, a multi-component pollution model is introduced, and a meteorological dry and wet settlement process is considered, so as to establish an urban global air and environment quality real-time estimation method. The urban environment quality estimation method is much better than existing methods in comprehensiveness, accuracy and real-time performance.

The application provides an air quality forecasting system which comprises an environment quality detection sensor and a cloud computing data processing platform, wherein the environment quality detection sensor is configured at a position of a pollution source and is used for acquiring air monitoring data and transmitting the acquired air monitoring data to a cloud computing data processing platform; and the cloud computing data processing platform is used for receiving the air monitoring data, predicting air quality of a monitored region by adopting an air quality prediction model based on a resource allocation neural network and a smooth support vector regression machine so as to obtain air quality predication data of each monitoring station, pushing the air quality predication data to an associated intelligent terminal, calculating correlation between the monitoring data of the pollution source and the air quality predication data of the monitoring stations according to the air monitoring data of the pollution source and the air quality prediction data of each monitoring station by utilizing a Gaussian point source diffusion model, and carrying out visualized presentation.

The invention discloses an agent used for remedying heavy metal polluted soil. The agent is prepared by mixing bentonite, a preparation containing magnesium, ferrous sulfide, lime and ferrous sulphate at a weight ratio of 40-50:1-10:1-10:4-7:1-5. The invention also provides a method used for remedying heavy metal polluted soil by using the agent. Advantages of applications of the agent and the method in remediation of heavy metal polluted soil are that, remediation effect is excellent, remediation period is short, soil environment quality after remediation meets the secondary standards of China <soil environmental quality standard> (GB15618-1995) completely, and the like.

The invention discloses a ceramsite for heavy metal wastewater treatment, a preparation method and applications thereof. Ceramsites contain bentonite or kaolin, nanoscale zero-valent iron powder or activated carbon. The ceramsite prepared by the method is 3-20 mm spherical particles with density of 1.15 g/cm<3>, bulk density of 814 kg/m<3>, strength of 5 MPa and specific surface area of 33 m<2>/gand has the advantages that the integral form is intact, the pores are developed, and the internal pores are communicated. The preparation method is shown in the specification for details. The raw materials of the ceramsite are easily obtained and are low in cost; the preparation method and the equipment used are simple and are convenient to operate; the ceramsite has excellent heavy metal ion adsorption and reduction performance; the removal efficiency for all heavy metal ions is more than 99% under the condition of high load of Cu<2+>, Zn<2+>, Pb<2+>, Cd<2+>, Cr<6+> and Hg<2+> in wastewater; the yielding water meets the third level water quality requirement of state environmental quality standards for surface water; and the ceramsite has high heavy metal adsorption capacity which is up to 50-200 mg/g. The ceramsite disclosed by the invention is mainly used as an adsorption carrier for heavy metal wastewater treatment.

The invention provides an air quality monitoring and evaluating method. The method is based on an air quality evaluation model QOI algorithm, and is used for monitoring and evaluating the environmental quality. The method specifically comprises the following steps: 1) acquiring an actually measured concentration value of each pollutant in the air in real time through a data acquisition module by referring to a graded concentration limit value of each pollutant in the air, correspondingly calculating and obtaining an air quality index IAQI of each pollutant, and transmitting the air quality index IAQI of each pollutant to an environment-friendly intelligent monitoring terminal; 2) according to the IAQI of each pollutant obtained at step 1), selecting the maximum value of the IAQI to determine the AQI of the air quality index, and monitoring the air quality in real time according to the air pollution index through the environment-friendly intelligent monitoring terminal; 3) determining and evaluating the air quality level, the air quality category and the color representing the air quality according to the AQI grading standard.

The invention relates to the technical field of monitoring and evaluation of a farmland soil environment, in particular to an evaluation method of quality of combined pollution farmland soil. The method comprises the steps of collecting a sample, determining a pollution index and a fertility index of the sample, performing principal component analysis on determination results, making judgment, performing pollution classvevaluation and then performing fertility grade evaluation under different pollution classes if the influence of a pollution factor is higher than that of a nutrient fertility factor, and performing the fertility grade evaluation and then performing the pollution class evaluation under different fertility grades if the influence of the nutrient fertility factor is higher than that of the pollution factor. According to the step-by-step evaluation method of the quality of the combined pollution farmland soil, an analytical result can visually show nutrient fertility characteristics of the soil of all combined pollution degrees; the scientificity of the evaluation of the quality of the combined pollution farmland soil is improved; the quality of the soil environment isimproved; and the method has important significance on the risk assessment of the polluted soil and guarantee of diet safety of people.

The invention relates to an environment quality detection control system and method. The system comprises an environment acquisition unit, a voice recognition unit, a network access unit, a data analysis unit and an environment quality adjustment unit. The environment acquisition unit carries out environment data acquisition and generates environment data. The voice recognition unit recognizes human voice, generates voice data and carries out simulation voice playback. The network access unit accesses the Internet, and acquires meteorological data and air quality data on the Internet, and uploads the voice data and corresponding command and environment data to the Internet cloud for storage. The data analysis unit carries out comprehensive analysis on various data and generates control data and voice feedback data. The environment quality adjustment unit adjusts the quality of indoor environment. According to the invention, environment quality detection, environment quality control, network access and voice recognition can be carried out; a user interacts with a device through a language; and the user can easily understand the outdoor environment quality for trend prediction and environment data statistics.

The invention discloses a method for preparing non-fired ceramsite from electroplating sludge. The method comprises the following raw materials: 5 to 15% of Portland cement, 10 to 70% of fly ash, 5 to 40% of ground fine mineral waste residue, 10 to 20% of ground fine steel slag, 0 to 3% of quicklime, 0.3 to 1% of ferrous sulfate, 0 to 3% of gypsum powder, 2 to 10% of electroplating sludge (on a dry basis) and 0.1 to 0.3% of a density adjusting plasticizer. The method comprises the following steps: fully mixing the above raw materials except electroplating sludge in advance; then adding original electroplating sludge and water and carrying out rolling and uniform mixing under stirring; and then carrying out granulation and natural maintenance. The non-fired ceramsite prepared in the invention has bulk density, strength and water absorption rate meeting requirements prescribed in Lightweight Aggregate and Testing Methods thereof GB/T17431-2010, and the leaching concentrations of heavy metals like chromium are lower than limited values of V-class surface water prescribed in Environmental Quality Standards for Surface Water GB3838-2002; and the method can realize safe disposal and recycling of electroplating sludge.

The invention relates to a method for solidifying and dry-stacking mill tailings without a tailing reservoir, comprising the following steps of: firstly, concentration of tailings: introducing the mill tailings into a concentration basin and adding a coagulant to concentrate the tailings to the state of the mass concentration greater than 50%; secondly, solidification of the tailings: guiding the concentrated tailings into a solidifying stirrer, mixing with a solidifying agent and stirring; thirdly, primary curing of the solidified tailings: stacking the solidified tailings for 24 hours to carrying out primary curing; and fourthly, dry stacking of the solidified tailings: filling the primarily cured solidified tailings in a stacking field by using a layered and subdivided filling method, and compacting after each-layer filling. The method has the advantages that the liquid tailings are solidified into solidified bodies having certain strength and meeting the requirement of environmental quality and can be directly stacked in the stacking field without establishing the tailing reservoir, thereby thoroughly eliminating the wet stacking stability and environmental pollution risks of the tailings in the tailing reservoir, saving the land occupied area of the stacking field and having remarkable economic, social and environmental benefits.

The invention discloses a self-adaptive control method for dynamic optimization of environment quality. The environment quality can be optimized and controlled aiming at specific object condition parameters and ideal object condition parameters are automatically and artificially set just by measuring target condition parameters and adopting a set of self-adaptive automatic control method. According to the self-adaptive control method for dynamic optimization of the environment quality, the investment cost is low, the university is good, the labor cost is reduced and the environment quality can be controlled scientifically and effectively, human being, animals, microorganisms and plants can be protected to live and grow in a favorable environment, and diseases caused by the environment quality problem is reduced. Single or multiple object condition parameters influencing the health of human beings are effectively improved. Single or multiple object condition parameters influencing economic indexes of the plants, microorganisms and animals are effectively improved.

The invention relates to a method for preparing a composite heterotrophic nitrobacteria water quality modifying solid powder or granule, and belongs to the technical field of aquiculture technology and ecological environmental protection. The water quality modifying solid powder and granule is prepared by the following steps: mixing Bacillus foecalis alkaligenes CGMCC NO.1.1786 and arthrobacterium CGMCC NO.1282 into mixed bacteria; performing fermentation on the mixed bacteria for 24 to 36 hours in a culture medium in a fermenter at the fermentation temperature of between 28 and 32 DEG C; processing the obtained product into a solid powder or granule after fermentation culture; and preparing the composite heterotrophic nitrobacteria water quality modifying solid powder or granule with the functions of reducing ammonia nitrogen and nitrite nitrogen in a water body. The preparation is convenient to use, is slightly influenced by environmental conditions, has small dosage, can obviously reduce the content of the ammonia nitrogen and the nitrite nitrogen in the pool water body after use, maintains the effect for 10 to 15 days, and can effectively prevent diseases and paroxysmal death of aquaculture organisms and improve the yield and the quality of the aquaculture organisms when simultaneously improving the environmental quality of the pool water quality and the survival conditions of the aquaculture organisms.