Manual Coars Bar Screen in Meghalaya
A Manual Coarse Bar Screen is a simple and cost-effective mechanical screening device used in wastewater and sewage treatment plants to remove large solid objects and debris from the influent stream. It consists of a fixed set of vertical or inclined bars (usually spaced 25–100 mm apart) that act as a physical barrier, intercepting coarse materials such as plastics, rags, wood pieces, bottles, and other floating solids before they enter downstream treatment units.
The screening process is entirely manual, requiring operators to periodically rake and remove the accumulated screenings from the bar screen to maintain flow efficiency. Manual coarse bar screens are typically installed at the inlet of treatment plants, pumping stations, or headworks to protect pumps, pipelines, and other mechanical equipment from clogging and damage.
This type of screen is best suited for small to medium flow rates, low-maintenance operations, and facilities where automation is not essential.
Properties of Manual Coarse Bar Screens
- Simple Design – Consists of fixed vertical or inclined bars with wide spacing, making it easy to install and operate.
- Bar Spacing – Typically ranges from 25 mm to 100 mm, suitable for intercepting large floating and suspended solids.
- Manual Operation – Screenings are removed manually using rakes or hooks; no mechanical or electrical components are required.
- Durable Construction – Generally made of stainless steel, mild steel, or galvanized steel to resist corrosion and withstand harsh wastewater conditions.
- Low Maintenance – With no moving parts, the system requires minimal upkeep.
- Cost-Effective – Ideal for small plants or pumping stations due to low initial and operational costs.
- Protection of Equipment – Prevents clogging and mechanical damage to downstream pumps, pipelines, and treatment units.
- Installation Flexibility – Can be placed at inlet channels, wet wells, or headworks of wastewater treatment plants.
- Flow Orientation – Installed either vertical or inclined (usually 60°–75°) to optimize flow passage and ease of manual cleaning.
- Capacity Suitability – Best for small to medium flow rates where manual cleaning is manageable.
