Project Overview:

Location: Sri Chaitanya College, Hydernagar, Hyderabad, India.

Capacity: 5,00,000 liters per day (approx. 500 m³/day)

Executing Agency: Sri Chaitanya Educational Institutions

Regulatory Compliance: Followed all norms suggested by Pollution Control Board

Background: Sri Chaitanya College in Hydernagar, Hyderabad, is a renowned educational institution known for its high student intake and academic excellence. As the college expanded its infrastructure and student capacity over the years, the management recognized the need for an efficient sewage treatment system to manage wastewater sustainably. The project aimed not only to comply with environmental regulations but also to accommodate future growth in student admissions and associated wastewater generation.

Challenges:

Increasing Student Population: The college's continuous growth in student admissions necessitated a sewage treatment plant that could handle a substantial increase in wastewater volume over time.

Space Constraints: Designing and installing a large-capacity STP within the limited available space on the college campus posed logistical and engineering challenges.

Environmental Responsibility: Ensuring the treated effluent met stringent pollution control norms set by the Pollution Control Board (PCB) to protect local water bodies and community health.

Solution:

Capacity Planning: Understanding the projected increase in student strength, the sewage treatment plant was designed with a capacity of 5,00,000 liters per day. This proactive approach ensured the STP could accommodate future wastewater generation without compromising operational efficiency or environmental compliance.

Advanced Treatment Technologies: The STP utilized advanced treatment processes tailored for large-scale wastewater management, including screening, biological treatment (such as extended aeration or sequencing batch reactor), and tertiary treatment (such as filtration and disinfection). These technologies were selected to achieve high-quality treated effluent suitable for safe disposal or reuse.

Space Optimization: Through innovative engineering and layout planning, the STP was designed to maximize treatment capacity while optimizing land use within the college campus. Compact treatment units and efficient piping networks were employed to minimize footprint and construction costs.

Compliance and Monitoring: Throughout the project execution, strict adherence to PCB guidelines and regular monitoring of effluent quality were maintained. This ensured that the treated wastewater met regulatory standards before discharge, safeguarding environmental health and community well-being.

Environmental Protection: Effective treatment of wastewater has significantly reduced the college's environmental footprint by preventing untreated sewage discharge into local water bodies.

Scalability and Future-Proofing: The designed capacity of 5,00,000 liters per day anticipates future increases in student admissions, ensuring the STP's ability to meet growing wastewater demands over the long term.

Educational and Community Impact: By adopting sustainable wastewater management practices, the college sets an example of environmental responsibility and resource conservation for its students and the surrounding community.

Operational Efficiency: The STP's reliable performance supports uninterrupted campus operations and enhances the overall campus hygiene and sanitation standards.

Inlet Water (Before Treatment):

Total Suspended Solids (TSS): Typically ranges from 150-300 mg/L.

Biochemical Oxygen Demand (BOD): Often between 200-400 mg/L.

Chemical Oxygen Demand (COD): Varies widely, but commonly around 400-800 mg/L.

Total Nitrogen (TN): Usually around 30-50 mg/L.

Total Phosphorus (TP): Can range from 5-15 mg/L.

pH: Typically in the range of 6.5-8.5.

Oil and Grease (O&G): Presence can vary, often below 10 mg/L.

Pathogens (E. coli or coliform bacteria): Presence depending on source contamination.

Outlet Water (After Treatment):

Total Suspended Solids (TSS): Reduced to less than 10 mg/L.

Biochemical Oxygen Demand (BOD): Reduced to less than 20 mg/L.

Chemical Oxygen Demand (COD): Reduced significantly, often below 100 mg/L.

Total Nitrogen (TN): Reduced to less than 10 mg/L.

Total Phosphorus (TP): Reduced to less than 2 mg/L.

pH: Generally neutralized to around 7.0.

Oil and Grease (O&G): Reduced to below detectable limits (often less than 5 mg/L).

Pathogens (E. coli or coliform bacteria): Significantly reduced to meet regulatory standards (often reduced by 4-5 logs).