Jingzhou Water Group Water Plant Split-Type Double-Suction Pump Energy-Saving Retrofit Project ｜ Jingzhou · Hubei

Application scenario: Jingzhou Water Group (four plants and three pumping stations regional water supply network, serving millions of residents and industrial parks), covering intake headworks, water delivery pump station, and Cenhe 30,000 m³/day booster station. Raw Yangtze River water contains silt and suspended solids, high hardness causing scaling; summer 39℃ / winter -6℃, humid pump rooms cause cast iron corrosion; demand fluctuation coefficient above 1.5 with strong peak-valley variation. Original S-type pumps had efficiency only 72%–76%, valve throttling caused over 25% ineffective power consumption, impellers wore and scaled every 3–5 months, constant-speed operation lacked intelligent control, maintenance required shutdown of supply lines, annual repair cost exceeded 800,000 RMB.


Solution content: M&W ENERGY SAVING complete XS split-type double-suction pump supply: XS600-680 intake head pump (4800m³/h / 26m / ≥87.5%, 6 units with 4 standby, 10kV VFD linked to Yangtze River level control), XS500-700 / 400-650 delivery pumps (2200–4000m³/h / 32–55m, 6kV VFD multi-pump control), XS350-630 Cenhe booster pump. 304 stainless steel wetted parts for sediment resistance, ZG20Mn pump body epoxy zinc-rich dual anti-corrosion, silicon carbide mechanical seal, 220V electric tracing. CFD impeller efficiency increased by 10–13 percentage points, split structure quick maintenance reduces shutdown time by 70%. Integrated into Jingzhou smart water dispatch platform.


Project results: comprehensive energy saving rate 23%–28%, annual electricity savings over 1.3 million RMB; overhaul cycle extended from 3–5 months to over 12 months, maintenance cost reduced by 65%; 24h VFD constant pressure ensures remote water pressure compliance, pipeline leakage reduced. Benchmark project for Hubei river water plants, replicable to Yichang, Jingmen, and Yueyang.

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