Suspended Solids Monitor: Smarter Community Water

Community water supply represents the “last kilometer” of municipal drinking water delivery. During secondary pressurization and storage, water quality can deteriorate due to infrequent tank cleaning, aging pipes, or flow fluctuations. Suspended solids—particles that cause turbidity—often signal microbial risks, corrosion byproducts, or sediment intrusion. 

Traditional manual sampling and laboratory analysis are intermittent and slow, failing to capture sudden deterioration. The online suspended solids monitor offers a continuous, automated, and highly sensitive solution that empowers residential communities to manage water quality scientifically and proactively.

Principle of Operation

The online suspended solids monitor uses optical nephelometry. A near‑infrared light source illuminates the water sample; suspended particles scatter the light. A detector placed at a specific angle (e.g., 90° or 135°) converts the scattered light into an electrical signal, which is processed to determine the concentration of suspended solids. This method requires no reagents, produces no secondary pollution, and delivers instantaneous readings.

Key Contributions to Scientific Water Management

Real‑Time Transparency – Installed at critical points such as storage tank outlets or main distribution lines, the device provides second‑by‑second data on suspended solids. Facility managers can view live readings and trend curves on a central screen or mobile device. This eliminates blind spots inherent in periodic manual checks.

Early Warning and Rapid Response – When the suspended solids concentration exceeds a preset threshold, the system automatically triggers audible and visual alarms and sends notifications via SMS, WeChat, or platform alerts. Operators can immediately investigate the cause (e.g., internal tank disturbance, incoming water change, or pipe disturbance) and take corrective actions—such as flushing the line or activating a backup filter—before contaminated water reaches residents’ taps.

Data‑Driven Maintenance Scheduling – Historical suspended solids data reveal patterns of sediment accumulation and biofilm growth. Instead of cleaning storage tanks on a fixed calendar schedule, managers can optimize cleaning intervals based on actual water quality trends. This avoids both unnecessary maintenance costs and the risk of neglected cleaning. When anomalous fluctuations occur, the data helps pinpoint the exact location and cause, enabling targeted repairs.