According to the opinions, by 2020, significant progress has been made in the third-party governance of key areas such as environmental public facilities and industrial parks, and the efficiency of pollution control and the level of specialization have been significantly improved, and the vitality of social capital to enter the pollution control market has been further stimulated. The reform of the environmental public utilities investment operation system was basically completed. The supply system for efficient, high-quality and sustainable environmental public service marketization has basically taken shape; the third-party governance business mode and model tends to mature, and a number of emerging technical capabilities, high levels of operational management, and comprehensiveness have emerged. An environmental service company with good credit and international competitiveness.
The suggestion was to introduce an environmental service company in industrial clusters and other industrial clusters to conduct centralized and professional pollution control of the park's enterprises, carry out environmental diagnosis, ecological design, clean production review, and technological transformation, etc.; organize and implement a cyclical transformation of the park. Rationally construct the industrial chain among enterprises, improve the efficiency of resource utilization, and reduce the overall cost of pollution control. In power, steel and other industries and SMEs, encourage the introduction of environmental performance contract services and other methods to introduce third-party governance.
Opinions request the selection of high-pollution, high-environmental risk industries in certain regions where conditions are met, and the companies that have been ordered by environmental protection authorities to restrict production, stop production and rectify pollution, and refuse to self-govern the pollution due to pollutants exceeding emission standards or total volume control requirements, List the list of enterprises to be announced to the society, and urge relevant companies to entrust environmental service companies to carry out pollution control within the prescribed time limit.
The "Opinions" also require that the standard for collecting sewage charges be increased, and differentiated sewage charges be implemented. We will improve the sewage and garbage disposal policies, increase the charging standards, and gradually cover the entire processing costs. Strictly implement the waste power generation price policy. Establish and improve the price mechanism that encourages the use of recycled water and promotes the recycling of waste. Comprehensive implementation of the coal-fired generating units desulfurization, denitrification, dust and other environmental protection pricing policy.
The opinion suggests that central financial support should be given to eligible third-party governance projects, and that qualified regions should also subsidize or reward third party governance project investment and operations. Actively explore the use of market-oriented fund operations to guide social capital investment and improve the diversified input mechanism. Study to clarify third-party governance tax incentives.
As an important form of Centrifugal Pump, double suction pump is widely used in engineering because of its high lift and large flow. The impeller of this pump type is actually a combination of two back-to-back impellers, and the water flow from the impellers merges into a volute. The double-suction pump has the following characteristics: it is equivalent to two single-suction impellers of the same diameter working at the same time, and the flow rate can be doubled under the same outer diameter of the impeller; the pump casing is horizontally opened, which is convenient for inspection and maintenance. The inlet and outlet of the suction pump are in the same direction and perpendicular to the pump shaft, which is conducive to the arrangement and installation of the pump and the inlet and outlet pipes; the impeller structure of the double suction pump is symmetrical, there is no axial force, and the operation is relatively stable.
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