Project introduction

Project background

Guangxi Qinzhou Qinzhougang water plant locates at the Qinzhougan₩g economic development zone, which is responsible for the daily water supply of Qinzhougang dist>rict. Qinzhouguang economic development zone locates at the Qinzhou Gu£lf in the north of Beibu Gulf, South China Sea. It has a convenient geographic λlocation in front of the West east China and faces to Southeast Asγia. It is a good natural deep sea port in the Southwest coast line of China ♣and has advantages for deep water berths due to its w♦ide waters, weak wind and wave, small incoming sediment amount and stable coast. The water p♣lant is an important infrastructure for the city development and plays♥ of importance part in local economic development. The water plant existing production was 500€00t/day since built in 1998, which is not able to meet the requirement to the city due to the ec÷onomic development and citizen increase for over 10 years. This project is the second" period extension. The extended water supply amount would a±chieve 50000t/day. Chemical feed room, flocculating settling pool, flus∏hing pump room with filter pool, Water-supply station with clear pool and sludge dewatering ro↑om.

Time period of the project

July, 2010 – January, 2011

System structure

Central control system

1 suit of engineer station (UNITY Pro 5.0 implemented), 2 su↕its of remote operator stations (HiTECH NetSCADA impl£emented), 2 suits of network servers and 1 suit of engineer laptop

Network system

8 suits of HiTECH HISCOM industrial fiber switches

Local control system

5 suits of PLC control cabinets (with Schneider Premium series PLC), 6 suits of remote I/O s↕tations (Schneider Advantys series remote I/O station) and 5 suits of local toλuch screen (Schneider XBT 10’ touch screen)

Instrument system

Instrument is adopted with Germany E+H intelligent instruments, whi☆ch includes residual chlorine detecting, PH evaluating, turbidity testing, Ultrasonic liquid£ level testing, pressure testing and Differential Pressure Detection.

UPS

5 suits of UPS power system (SWOF) including one 10KVA central control room UPS and 4 suits ↕of PLC control cabinet 6KVA UPS.

Network topology