80 results about "Environmental risk assessment" patented technology

The invention discloses a method for rapidly identifying an environmental risk of a power transmission and transformation project. The method comprises the following steps of: modeling spatial data information which comprises a map, a line route, a sensitive area position boundary and the like according to an object-oriented data model; establishing corresponding spatial database and attribute database; querying related data of a sensitive area meeting the condition in the attribute database by adopting a standard Structure Query Language (SQL); screening a spatial entity identifier meeting the condition; entering the spatial database; and searching a corresponding spatial entity according to the identifier so as to realize automatic identification statistics, analysis and early warning, and planning and comparison of the sensitive area, and further complete the environmental risk assessment and environmental optimization of power transmission and transformation project construction.

The invention provides a regional comprehensive environmental risk assessment and division method. The environmental risk assessment and division can be regionally carried out to a large extent. The regional comprehensive environmental risk assessment and division method is characterized in that the essential factors of the environmental risks can be analyzed according to the regional comprehensive environmental risk system theory; a regional environmental risk assessment index system can be built, and the essential factors comprise risk sources, risk control mechanisms, risk fields, and risk receptors; the weight values and the assessment values of various indexes in the assessment index system can be determined based on the built assessment index system; the comprehensive environmental risk value of the assessment region can be acquired according to the weight values and the assessment values of various indexes of the assessment index system; the risk division of the assessment region can be carried out according to the preset classification method according to the comprehensive environmental risk value of the assessment region. The regional comprehensive environmental risk assessment and division method is suitable for the environmental science and technology field.

The invention belongs to the technical field of pollutant monitoring, early warning and tracing system construction methods, in particular to a refinery enterprise atmospheric pollutant monitoring, early warning and traceability system construction method. The refinery enterprise atmospheric pollutant monitoring, early warning and traceability system construction method comprises the following steps of: S1, enterprise environmental risk assessment; S2, monitoring station construction, specifically, based on monitoring factors and risk units determined in the step S1, carrying out monitoring point position arrangement and monitoring instrument selection to form a pollutant monitoring system in which a plurality of monitoring instruments are jointly applied; and S3, tracing and early warninginformatization platform construction. According to the refinery enterprise atmospheric pollutant monitoring, early warning and tracing system construction method provided by the invention, monitoring factors capable of representing refinery enterprise pollution characteristics are selected; by means of various high-sensitivity devices, a production unit fingerprint spectrum technology and a pollutant source analysis technology, an omnibearing atmospheric pollutant monitoring, early warning and tracing system is formed, and a novel pollution prevention and treatment mode for refinery enterprises is established.

The invention provides a petrochemical enterprise risk environmental management system. The system comprises an environmental risk assessment module, an environmental hidden danger module, an environmental risk early warning module, an environmental emergency module and an aid decision making module. The system can help the enterprises to carry out the jobs such as environmental risk daily management, in-advance early warning and environmental emergency disposal, so as to improve the environmental risk management level.

The invention provides a combined application method of regional environmental risk assessment zoning, regional environmental risk bearing capacity and a GIS (geographic information system) platform with intuitiveness, accuracy and a wide application range for the regional layout optimization and adjustment according to the status of the current environmental risk control and management techniques, which aims at that the basis for the adjustment and the optimization in the current regional layout optimization and adjustment is short of a theoretical and quantitative basis. The method comprises the following steps: gathering environmental risk bearing capacity assessment index data according to the proposed environmental risk bearing capacity-based conception and a quantification method, calculating the environmental risk bearing capacity of researching regions, and realizing the display of the spatial distribution of the environmental risk bearing capacity through the GIS platform; analyzing risk sources in the regions, analyzing the positions of the risk sources, and the species and the stored quantity of risk materials of the risk sources, carrying out assessment on the degree of contamination and the range of influence on the atmosphere and water bodies caused by the leakage of pollutants according the improved Gaussian model and the pollutant-water body one-dimensional diffusion model so as to obtain the risk fields of the risk sources, and equally realizing the display of the spatial distribution of the risk fields through the GIS platform; carrying out superposition on the regional environmental risk bearing capacity and the regional environmental risk fields in a GIS, and realizing the conflict analysis of regional environmental risk-risk bearing; and proposing an adjustment scheme for regions with risk-bearing conflicts according to the rules of the layout optimization adjustment.

An experimental system and method for simulating the impact of oil spill weathering on water quality. Including: experimental device for scale-down simulation of the impact of oil spill weathering on water quality, oil spill case comparison module and database, applicable area matching module and database, water quality assessment and analysis module, and special experimental methods for use in scale-down simulation environments Simulate the impact of oil spill weathering (including oil spill dispersion) on water quality, and restore and convert the experimental results under specific oil products and scaled-down simulation environmental conditions into the stage-by-stage water quality index variation and degree and scope of impact. The invention provides experimental technical support for scientifically understanding oil spill and its dispersed environmental fate and hazards, carrying out oil spill environmental impact assessment and environmental risk assessment, and actively and effectively taking pollution prevention, emergency response, and environmental restoration countermeasures.

The invention provides a regional water environment risk zoning method comprising the steps that a driving force factor, a pressure factor, a state factor, an impact factor and a response factor of a DPSIR module are determined; a regional water environment risk assessment index system is constructed, and the constructed regional water environment risk assessment index system comprises a target layer, a system layer, a criterion layer and an index layer which reflect the regional water environment risk from different angles; the weight of each index is calculated by using the analytic hierarchy process and value assignment is performed, and then all the index systems are quantitatively graded; then the regional water environment risk value is calculated through a fuzzy comprehensive evaluation method; and the regions are divided into a high-risk region, a medium-risk region, a low-risk region and a no-risk region in a decreasing order according to the risk with ArcGIS acting as an auxiliary tool. According to the scheme, the regional water environment can be more accurately assessed so as to provide accurate basis for decision.

The invention discloses a construction method of a medium-temperature anaerobic digestion removal rate prediction model for PPCPs organic chemicals. The construction method comprises the steps of datacollection, training-set and verification-set sample compound setting, descriptor calculation, model construction and model performance evaluation. The Euclidean distances to training set samples iscalcualted by using the four descriptors, namely, DI SPm, Mor15m, HATSe and O-060, three closest training set samples are selected, and the removal efficiency type of the PPCPs to be predicted is determined according to the removal efficiency classification results of the three training set samples to the maximum extent. The model can accurately predict the removal efficiency of the PPCPs in the sludge medium-temperature anaerobic digestion process, the prediction method is simple and rapid, actual measurement and research is avoided, manpower, material resources and time are saved, and theoretical and technical support is provided for sludge efficient anaerobic digestion treatment engineering design and PPCPs environmental risk assessment.

The invention discloses a regional power grid environment risk assessment method, and relates to the technical field of power grid planning, and the method comprises the following steps: selecting a target regional environment according to an actual demand, and making a planning scheme; obtaining environment risk related information of the target area, constructing a comprehensive environment risk assessment index system of the target area, and constructing a risk assessment model according to the index system; determining the weight of each index in the risk assessment model; and carrying out grading quantification according to the indicator system to obtain an environment risk value of the target area. According to the regional power grid environment comprehensive risk assessment method, on the basis of the environment data, the power grid planning environment influence key factors are identified, the corresponding risk levels are assessed, the power grid planning environmental impact evaluation and the power transmission and transformation project are effectively combined, the planned substation site selection and line selection can be optimized, the environmental risk can be fully identified and avoided, and the environmental dispute and emergencies can be prevented and reduced.