Abstract: Aiming at the problem that is difficult to dispatch the output and reception of reclaimed water and acid water in the second plant area of a group company , a real-time monitoring method for the balance of reclaimed water and acid water pipeline network is designed and implemented. 'This method，based on the real-time data acquisition technology of OLE for Process Control is used to collect the real-time data of the key parameters of water and acid water in each process of the chemical system at the outlet of reclaimed water and acid water ， and the key indicators of equipment operation in the sewage treatment system at the receiving and receiving end. The real-time configuration adopts the method of combining the real and virtual tag numbers to integrate the parameters of the output end and the receiving end，and publish them through the web centralized monitoring. 'The real-time data acquisition of parameters based on Programmable Logic Controller and Distributed Control System of different platforms is carried out，and unified integration is adopted to realize information sharing and balance of reclaimed water and acid water pipe net-work ,which improves the level of enterprise digitalization and information management.

Key words: reclaimed water and acid water, pipeline network balance, real-time data acquisition, real-time and virtual number , information sharing