The major economic provinces in China are characterized by a large amount of hazardous waste, various types of hazardous waste and a high degree of marketization of business activities. At the same time, the informatization level of hazardous waste management is still low, which is manifested in the following aspects: lack of strategic planning for informatization development, unbalanced informatization development of waste management, insufficient construction of urban waste business management system, serious difficulties in sharing and exchanging waste information, general neglect of spatial information in the whole process of hazardous waste from generation, transfer to extinction, and serious shortage of application of spatial information technologies such as GIS. In view of this, the author conducted in-depth investigation and research on the current situation of solid waste management informatization, and on this basis, combined with WebGIS and other spatial information technologies, carried out the research, design and development of solid waste management information system.
A, solid waste management information system construction goals
Establish a networked solid waste management information system with three levels of networking, complete functions and covering the whole province at the provincial, municipal and district (county) levels, and basically realize the whole process supervision of hazardous waste information; Establish a relatively perfect solid waste information exchange network system to realize the safe and orderly network information exchange of solid waste.
Second, the content of solid waste management information system construction
1 hazardous waste business license
Establish the management information system of hazardous waste business license, standardize and standardize the approval process of hazardous waste and strictly control the waste business license. Through the collection, processing, inquiry, statistical analysis and GIS spatial analysis of the license application information and daily management ledger of hazardous waste business units, we can grasp the production and business activities of hazardous waste business units in the region in time and provide decision-making basis for the daily supervision of hazardous waste business units.
2 Source management of solid waste
The construction of solid waste source management information system is a three-level network application system of province, city and district (county) relying on environmental protection wide area network. Based on the dynamic declaration and registration management of solid waste source, the basic database of solid waste source is established to provide strong support for solid waste management and decision-making. Realize the dynamic declaration and collection of waste output and direction of hazardous waste generating units, control the output and direction of hazardous waste in enterprises and regions in real time, and conduct statistical analysis and GIS spatial analysis on this basis.
3. Emergency management of hazardous waste accidents
Establish an information management system for emergency response and treatment of hazardous waste pollution accidents, track and warn sudden hazardous waste pollution accidents in time, and provide decision support for hazardous waste accident treatment and command and dispatch. Its main functions include basic data query of hazardous waste accidents, emergency decision-making, hazardous waste accident data summary and report, and hazardous waste accident plan management. The basic database of emergency management of hazardous waste accidents mainly includes accident data investigation database, knowledge base, expert database, treatment prediction database and disposal technology database.
4 hazardous waste transfer management
Establish hazardous waste transfer management information system, realize the information operation process of online approval of transfer plan and online filing of transfer joint sheet, realize the dynamic supervision of the whole process of hazardous waste from the state of transfer plan to transportation, treatment and disposal, and track and master the flow direction of regional hazardous waste in real time. It mainly realizes the electronization and automation of the transfer form, and manages the form by electronic signature, which is convenient and quick, simplifies the operation process and improves the efficiency [3].
5 solid waste information * * * enjoy
The solid waste information sharing system provides a service system for environmental protection departments at all levels and the public to inquire, share and exchange solid waste information. The main construction contents are the website of solid waste information exchange and release and the solid waste information database. The main functions include information inquiry of laws, regulations, standards, policies and systems related to solid waste, dynamic release of management, inquiry and release of supply and demand information of solid waste, examination and approval of hazardous waste business license, release and publicity of examination and approval information of import waste license, etc.
6 waste import and export management
The waste import and export management information system collects, extracts, processes and processes the filing information, license application information and daily business ledger information of imported waste processing and utilization enterprises, realizes the information-based supervision and management of the whole process of waste from import to processing and utilization, and provides decision-making basis for the supervision and license approval of imported waste. The establishment of imported waste management information system simplifies the filing and application procedures of imported waste processing and utilization enterprises, which is convenient for enterprises to understand and track the application and approval of imported waste, and make statistics and inquiries about the processing and utilization of imported waste in their own units; Hazardous waste management departments at all levels can grasp the filing, license application and processing and utilization of imported waste processing and utilization enterprises in real time, and provide decision support for regional imported waste management.
Thirdly, the overall structure design of solid waste management information system.
The construction of solid waste management system follows the principles of practicality, high efficiency and stability. SQLServer2000 enterprise database management system and spatial data server ArcSDE are used to access and process spatial and attribute data. The GIS service part uses powerful ArcIMS to realize information update and remote maintenance, and the open source GeoServer is used for map clipping and GIS foreground display. The database is built according to standardized information classification standards and unified geographical and spatial relations; The data access layer consists of data access service and data exchange engine. The former realizes the pretreatment, storage and maintenance of hazardous waste business information and spatial information, while the latter is used to realize the data exchange and sharing between business application systems and off-platform systems. Unified authentication is used to * * * enjoy the user information of other business systems of the Environmental Protection Agency, and ensure the authenticity of user identity and the controllability of system access; Directory service realizes network resource search, user access control, authentication information query and mail management; Process management realizes business process and dynamic task assignment. The business application layer realizes the information supervision of the whole dynamic process of hazardous waste from generation, comprehensive utilization, transportation to final treatment and disposal.
Fourthly, the application of WebGIS technology in solid waste management system.
1. What is WebGIS?
WebGIS is a combination of geographic information system and Internet technology, which enables users to browse, query, display and analyze geographic information online from any node of WWW.
Application of 2.2. WebGIS in the system
WebGIS technology is mainly manifested in the use of WebGIS technology to realize data collection, update, spatial positioning and intuitive thematic analysis of hazardous waste business information. The system updates the spatial business database according to the real-time source declaration and monitoring information, which is convenient for users to grasp the spatial distribution of hazardous waste sources, disposal facilities, regional waste generation, circulation, disposal and utilization in time; The thematic analysis function of GIS provides users with a brand-new decision support means for hazardous waste management by mining various potential connections hidden in attribute data and making intuitive statistical analysis on thematic maps on basic electronic maps. At the same time, the system uses WebGIS and GPS to realize multi-space and multi-time monitoring of hazardous waste transfer, which can display and view the current and historical driving tracks of hazardous waste transport vehicles on the map, and finally realize the dynamic, real-time remote monitoring and management effect of hazardous waste transfer through SMS platform to ensure the healthy and orderly transfer of hazardous waste.
3.3 application advantages. WebGIS in the system
By introducing WebGIS, GPS and other spatial information technologies, the whole process of hazardous waste management can be completely brought into the space-time framework system. WebGIS technology is mainly embodied in: intuitive positioning, display, browsing and data editing of hazardous waste sources and disposal facilities based on electronic maps; The thematic analysis function of GIS fully reveals various quantitative relations and logical relations, and displays them intuitively on the electronic map in the form of graphics or symbols; Users can study the spatial state change law of the whole process of regional hazardous waste from generation, transfer to disposal from a macro scale; Combined with the time dimension, the basic situation of hazardous waste generation, transfer and disposal can be analyzed in any time series and slice.
Verb (abbreviation of verb) conclusion
The solid waste management system has effectively changed the traditional work and management mode, and obviously improved the work efficiency and economic benefits; At the same time, the system can timely and accurately reflect the generation, transfer and disposal of hazardous wastes, laying a solid foundation for assisting leaders in decision-making. The application of WebGIS technology has promoted and deepened the reform of hazardous waste management. The construction of solid waste management system is of reference significance to the informatization of hazardous waste management and can be implemented as a typical example in the whole country.
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