STP Plant Process

A Sewage Treatment Plant or STP plant is used to get rid of contaminants from wastewater. Physical, chemical and organic processes are involved to remove or treat wastewater contaminants.Hydroflux Engineering Pvt Ltd is a reputed STP Plant manufacturer in Delhi. We have served various industries and applications across the Globe and constantly innovate to extend our spectrum of offerings.Contact - +91 9958894803Website - www.hydroflux.co.inEmail - support@hydroflux.co.inSewage Treatment Plant Process Flow Diagram1. Preliminary TreatmentScreening: Removal of large debris (sticks, leaves, trash) using screens or bars.Grit Removal: Elimination of sand, gravel, and other heavy particles using grit chambers.2. Primary TreatmentSedimentation Tanks:Sludge: Heavy solids settle to the bottom as sludge.Scum: Lighter materials (oils, grease) float to the top and are removed.Flow Equalization: Balancing the flow rate of wastewater to ensure consistent treatment efficiency.3. Secondary TreatmentBiological Treatment:Aeration Tanks: Air is pumped in to provide oxygen for aerobic bacteria.Activated Sludge Process: Utilizes a mixed community of microorganisms to consume organic pollutants.Trickling Filters: Wastewater is distributed over a bed of media, where microorganisms form a biofilm to degrade pollutants.Secondary Sedimentation: Settling tanks to separate treated water from biological solids (secondary sludge).4. Tertiary TreatmentAdvanced Filtration: Further removal of fine particles and suspended solids.Chemical Treatment: Reduction of nutrients (nitrogen, phosphorus) using chemical precipitation or ion exchange.Disinfection: Using methods like chlorination, UV radiation, or ozonation to eliminate pathogens.Nutrient Removal: Specific processes to remove nitrogen and phosphorus to prevent eutrophication in receiving waters.5. Sludge TreatmentThickening: Increasing the solids concentration by removing excess water.Digestion: Breakdown of organic matter in sludge using anaerobic or aerobic digestion.Dewatering: Reduction of water content in sludge using centrifuges, belt filter presses, or drying beds.Stabilization: Further treatment to reduce pathogens and odor.Disposal/Re-use: Options include land application, composting, incineration, or landfilling.6. Discharge or ReuseDischarge:Receiving Water Bodies: Treated water is released into rivers, lakes, or oceans.Regulatory Compliance: Ensuring discharged water meets environmental standards.Reuse:Irrigation: Use of treated water for agricultural or landscape irrigation.Industrial Processes: Use of treated water in cooling towers, boiler feed, or manufacturing processes.Groundwater Recharge: Replenishing groundwater supplies through infiltration basins or injection wells.Additional PointsOdor Control: Implementing measures to reduce unpleasant smells from the treatment plant.Energy Recovery: Utilizing biogas produced from anaerobic digestion for electricity generation.Automation and Monitoring: Using sensors and control systems to optimize the treatment process and ensure compliance with regulations.Public Awareness and Education: Informing the community about the importance of wastewater treatment and encouraging practices that reduce the burden on treatment plants.Sustainability Practices: Implementing strategies to reduce energy consumption, chemical usage, and overall environmental impact.