STP Solutions Under Swachh Bharat Mission 2.0: Why MBR is the Future

Swachh Bharat Mission 2.0 and the Sewage Treatment Imperative

Swachh Bharat Mission (SBM) 2.0, launched in October 2021 with a budget allocation of ₹1.41 lakh crore, marks a significant evolution from the first phase of India's cleanliness campaign. While SBM 1.0 focused primarily on eliminating open defecation through toilet construction, SBM 2.0 takes a holistic approach to sanitation, emphasizing sustainable waste management, liquid waste treatment, and the creation of ODF Plus (Open Defecation Free Plus) cities and villages. A critical component of this transformation is the treatment of sewage and faecal sludge, requiring the installation and upgradation of Sewage Treatment Plants (STPs) and Faecal Sludge Treatment Plants (FSTPs) across urban and rural India.

For municipalities, gram panchayats, and EPC contractors working on SBM 2.0 projects, the choice of treatment technology is a pivotal decision that determines long-term compliance, operational costs, and environmental outcomes. Membrane Bioreactor (MBR) technology, offered by TheWay Membranes as an indigenous Make in India solution, represents the future of sewage treatment under Swachh Bharat Mission 2.0.

The SBM 2.0 Framework for Sewage and Liquid Waste Management

SBM 2.0 Urban focuses on achieving garbage-free cities through scientific processing of all types of waste, including sewage. The mission's guidelines emphasise the need for decentralized treatment systems in smaller cities and towns, networked sewerage systems for larger cities, and mandatory faecal sludge management for cities without sewerage networks. The ODF Plus certification requires that all wastewater is safely treated and no untreated sewage is discharged into water bodies or open drains.

SBM 2.0 Grameen (Rural) similarly mandates ODF Plus status for all villages, which includes effective management of greywater and blackwater. This creates a massive demand for compact, efficient, and affordable sewage treatment solutions across India's 6 lakh villages and 4,700+ urban local bodies. The treated effluent must comply with CPCB/SPCB standards: BOD < 10 mg/L, TSS < 10 mg/L, and COD < 50 mg/L for reuse applications.

Why Conventional STPs Are Failing Under SBM 2.0

A 2021 CPCB audit revealed that a significant number of existing STPs in India are either non-functional or producing effluent that does not meet prescribed discharge standards. The primary reasons include outdated technology that cannot meet revised CPCB norms, poor operation and maintenance due to lack of skilled operators, overloaded capacity with sewage inflow exceeding design parameters, and excessive footprint requirements making land acquisition difficult in urban areas.

Conventional technologies like Extended Aeration (EA), Activated Sludge Process (ASP), and even Sequential Batch Reactors (SBR) produce effluent with BOD in the range of 15-30 mg/L and TSS of 15-30 mg/L. While these may have been acceptable under earlier, more lenient standards, they fall short of the current CPCB/SPCB requirements that mandate BOD < 10 mg/L and TSS < 10 mg/L for disposal into water bodies or reuse.

MBR Technology: The Superior STP Solution for SBM 2.0

Membrane Bioreactor technology fundamentally changes the sewage treatment equation by introducing a physical membrane barrier into the biological treatment process. This eliminates the reliance on gravity settling and ensures that the treated effluent is essentially free of suspended solids, bacteria, and most pathogens. The result is consistently superior effluent quality that not only meets but significantly exceeds CPCB/SPCB discharge standards.

TheWay Membranes' MBR systems deliver guaranteed effluent quality parameters: BOD < 5 mg/L (50% better than the < 10 mg/L standard), TSS < 5 mg/L (50% better than the < 10 mg/L standard), COD < 30 mg/L (40% better than the < 50 mg/L standard), turbidity < 1 NTU, and faecal coliform removal exceeding 99.9%. This performance consistency is maintained even during peak flow conditions, seasonal variations, and shock loads — scenarios where conventional STPs frequently fail.

Decentralized MBR Systems for SBM 2.0 Rural Projects

SBM 2.0 Grameen's focus on greywater and blackwater management in villages requires compact, decentralized treatment solutions. TheWay Membranes offers containerized and package MBR systems ranging from 5 KLD to 100 KLD that are pre-fabricated, factory-tested, and ready for rapid deployment. These systems require minimal civil construction, can be installed within 4-6 weeks, and operate with minimal operator intervention through automated controls.

For gram panchayats implementing ODF Plus greywater management, TheWay's compact MBR units treat domestic wastewater to reuse quality, enabling the treated water to be used for kitchen gardens, community plantations, and groundwater recharge. This closed-loop approach aligns perfectly with SBM 2.0's vision of sustainable sanitation and water security in rural India.

Make in India: TheWay's Cost Advantage for SBM 2.0 Projects

Budget constraints are a reality for SBM 2.0 projects, especially in smaller municipalities and rural areas. TheWay Membranes' Make in India advantage is particularly relevant here. As an Indian manufacturer, TheWay offers MBR membranes at 30-40% lower cost compared to imported alternatives, directly improving project economics. Our PVDF and PES membranes are manufactured to international quality standards while being priced for Indian market realities.

The total cost of ownership for a TheWay MBR-based STP under SBM 2.0 includes lower CAPEX due to reduced land requirements and civil works, competitive membrane pricing that is 30-40% below imported alternatives, lower OPEX through reduced sludge production and chemical consumption, revenue potential from treated water reuse, and reduced lifecycle cost with locally available replacement membranes and spare parts. For SBM 2.0 tenders, this cost-effectiveness combined with superior performance makes TheWay MBR systems a compelling proposition.

FSSM and Co-treatment with MBR

A unique aspect of SBM 2.0 is the emphasis on Faecal Sludge and Septage Management (FSSM). Many smaller cities and towns lack sewerage networks and rely on septic tanks. The faecal sludge from these systems requires proper treatment. TheWay MBR systems can be designed for co-treatment of both sewage and faecal sludge, providing a unified treatment solution. The membrane barrier ensures that even the higher-strength faecal sludge component is effectively treated to meet discharge standards, making MBR ideal for integrated FSSM-STP projects under SBM 2.0.

Environmental and Social Impact

Beyond regulatory compliance, MBR technology under SBM 2.0 delivers significant environmental and social benefits. The superior effluent quality prevents pollution of rivers, lakes, and groundwater bodies. Water reuse reduces pressure on freshwater resources. Reduced sludge production minimises landfill requirements. Compact footprint allows green space preservation in communities. The odour-free, enclosed operation improves the aesthetic and social acceptance of STPs in residential areas. These factors contribute to a cleaner, healthier India — the core vision of Swachh Bharat Mission.

Frequently Asked Questions (FAQ)

Q: How does MBR technology support ODF Plus certification under SBM 2.0?

A: ODF Plus requires safe management of all wastewater with no untreated discharge. MBR ensures 100% treatment to reuse-grade quality (BOD < 5, TSS < 5, COD < 30 mg/L), directly supporting ODF Plus certification for both urban and rural local bodies.

Q: Can TheWay MBR systems handle faecal sludge along with sewage?

A: Yes, TheWay MBR systems can be designed for co-treatment of sewage and faecal sludge, making them ideal for integrated FSSM-STP facilities under SBM 2.0, especially in cities without complete sewerage networks.

Q: What is the minimum capacity MBR system available for small villages under SBM 2.0 Grameen?

A: TheWay offers containerized MBR systems starting from as low as 5 KLD, specifically designed for village-level greywater and blackwater treatment under SBM 2.0 Grameen. These pre-fabricated units can be deployed in 4-6 weeks with minimal civil work.

Q: How does treated water from MBR systems support water reuse under SBM 2.0?

A: MBR-treated water meets CPCB reuse standards and can be directly used for gardening, toilet flushing, road washing, construction activities, and groundwater recharge without additional polishing, enabling circular water management as envisioned under SBM 2.0.

Q: Does TheWay provide turnkey STP solutions for SBM 2.0 projects?

A: TheWay works with EPC contractors and system integrators to provide complete MBR membrane solutions including system design, membrane supply, commissioning support, and O&M guidance. We also provide DPR preparation assistance and tender documentation support for SBM 2.0 projects.

Conclusion

Swachh Bharat Mission 2.0 demands a paradigm shift in India's approach to sewage treatment. Conventional technologies that fail to meet stringent CPCB/SPCB discharge standards are no longer acceptable. MBR technology, with its consistent reuse-quality effluent, compact footprint, and compatibility with both centralised and decentralised treatment models, is the future of STPs under SBM 2.0. TheWay Membranes' Make in India MBR solutions offer the performance, affordability, and local support that India's municipalities and villages need to achieve Swachh Bharat's vision of clean, sustainable sanitation. Contact TheWay Membranes to learn how our MBR systems can power your SBM 2.0 project.