By optimizing the setup of exhaust pipeline network and using the pressurized condensation technology and membrane separation technology ,PetroChina Dalian Petrochemical Company recovered up to 99.

The design for vacuum sewerage network is relative complicated,there are different design parameters in all pipeline,such as pressure loss,design flow rate,and vacuum,etc.

A new method for simulation of unsteady flow within drainage network;

The drainage network is an important component of basic facilities of a city.

The actual demand for construction management, document management, operation and maintenance management of urban drainage network was analyzed.

Development and Application of the Drainpipe Networks Geographical Information System Based on Mapobjects;

With the high-speed development of the society and economy, urbandrainpipe networks are being constructed so frequently and greatly that thetraditional manual method can hardly meet the demands for management ofurban drainpipe networks.

In order to prevent urban water-related disasters such as road waterlogging,computer simulation model for drainage networks in the central zone of Zhenjiang City was constructed based on the storm water management model(SWMM) platform.

With the progress of urbanization and the enlargement of city scale in China, the optimal design on new construction rehabilitation and extension of urban drainage networks poses a key task to the water and wastewater engineers.

With the progress of urbanization and the enlargement of city scale in China, the optimal design on rehabilitation and extension of urban drainage networks poses a key task to the water and wastewater engineers.

Development and application of planning and management system on urban drainage pipe network based on GIS;

There are many kinds of drainage materials used in drainage pipe network system, and their properties are different.