Maoming Binhai New Area Urban-Rural Integrated Water Supply Pump Project ｜ Maoming · Guangdong

Application scenario: Maoming Binhai New Area “13th Five-Year Plan” major livelihood water conservancy project, daily supply 280,000 m³, main intake from Erdong River + backup from Hejiao Reservoir, serving 300,000 residents in Bohe and Diancheng, Bohe and Jida ports, and hydrogen chemical industrial park. 42.71 km main transmission pipeline. Coastal Guangdong has high temperature, humidity, and salt spray with high chloride ions. Raw water contains sediment during flood season; groundwater has high hardness and slight salinization. Summer temperatures exceed 40℃ with frequent typhoons. Demand fluctuates among residential, industrial, and port users with long-distance elevation differences. Original S-type pumps had low efficiency, valve throttling caused over 26% energy loss, impellers wore and scaled within 3–5 months, salt corrosion caused bolt seizure, and constant-speed operation lacked intelligent control.


Solution content: M&W ENERGY SAVING complete XS split-type double-suction pumps + DG multistage pumps: XS600-690 intake pumps (4600m³/h / 28m / ≥87.5%, 6 units with 4 standby, 10kV VFD linked to water level), XS500-710 / 400-650 delivery pumps (2000–3800m³/h / 35–62m, 6kV VFD group control), DG200-45×7 trunk booster (260m³/h / 320m), DG150-50×5 industrial zone high-pressure pumps (140m³/h / 220m). 304/316L graded corrosion protection, ZG20Mn pump body epoxy zinc-rich + salt-resistant coating, all 304 stainless fasteners, silicon carbide mechanical seal, 220V electric tracing. CFD impeller efficiency improves by 10–14 percentage points, split quick maintenance reduces time by 70%, pipeline water hammer absorber included.


Project results: comprehensive energy saving rate 24%–29%, annual electricity savings over 1.6 million RMB; overhaul cycle extended from 3–5 months to over 12 months, maintenance cost reduced by 68%; 24h VFD constant pressure ensures stable urban-rural water supply, leakage reduced. Benchmark for western Guangdong coastal water supply systems, replicable to Zhanjiang, Yangjiang, and Shanwei.

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