Ministry of New and Renewable Energy
azadi ka amrit mahotsav
Ministry of New & Renewable Energy participates in World Hydrogen Summit 2025, highlights India’s vision and capabilities in Renewable Energy and Green Hydrogen
Posted On: 20 MAY 2025 5:42PM by PIB Delhi
Secretary, Ministry of New & Renewable Energy, Government of India, Shri Santosh Kumar Sarangi today addressed the World Hydrogen Summit 2025 in Rotterdam, highlighting India's strategic vision and capabilities in the domain of renewable energy and green hydrogen production.
The Secretary underscored India’s transformative potential of Green Hydrogen to become a global leader in this space. This ambition largely relies on India’s strength in the renewable energy domain.
The Secretary highlighted that India has already installed over 223 GW of renewable energy—that includes 108 GW from solar and 51 GW from wind—placing India among the fastest-growing renewable energy markets globally. He reiterated India’s vision to achieve energy independence by 2047 and reach Net Zero emissions by 2070.
To drive this transition, the National Green Hydrogen Mission was launched by the Government in 2023, with an initial allocation of USD 2.4 billion. It lays out a comprehensive roadmap to:
Identify and Create demand in potential sectors
Provide production incentives for setting up domestic capacity
Achieve 5 million metric tonnes of green hydrogen production by 2030,
Averting nearly 50 MMT of CO2 emissions annually.
Attract investments of about USD 100 billion.
Generate over 600,000 jobs.
The Secretary further mentioned that India has made remarkable strides in green hydrogen development. The country has allocated 862,000 TPA production capacity annually to 19 companies, and awarded 3,000 MW annual electrolyzer manufacturing capacity to 15 firms, and we have launched pilot projects in steel, mobility, and shipping sectors.
Green Hydrogen Certification Scheme of India has been launched recently. The Mission is working on a Whole of Government approach and major policy provisions have been made to support the nascent but fast growing domestic Green Hydrogen industry. Green Hydrogen and Green Ammonia plants have been exempted from Environmental Clearance by the Ministry of Environment, Forest and Climate Change. To push this forward three major ports namely Kandla, Paradip and Tuticorin ports have been identified by Ministry of Ports, Shipping and Waterways (MoPSW) to be developed as Green Hydrogen hubs. Furthermore, 15 states have announced policies to support green hydrogen. These effective actions firmly establish India to be a global leader in green hydrogen sphere, but challenges ahead such as high production costs, lack of standardized frameworks, and infrastructure limitations; pose hindrance to scaling up hydrogen economy.
The Secretary invited Delegates attending the Green Hydrogen Summit 2025 to visit India’s Pavilion during the next two days and interact with Indian industries to explore partnerships.
The Secretary’s keynote address showcased that India’s vision to not only meet its domestic demand but also become a major global exporter of green hydrogen by 2030—contributing meaningfully to decarbonization action.
The National Green Hydrogen Mission is a flagship initiative of the Government of India, aimed at fostering the development and adoption of green hydrogen technologies in India. With a target of establishing 5 million tonnes of annual green hydrogen production capacity by 2030, the mission represents a significant step towards realizing India's ambitions in the hydrogen economy. The Government has made substantial progress in this regard, having awarded tenders for incentives to support green hydrogen production of a total of 862,000 tonnes per annum. Additionally, tenders have been awarded for the establishment of electrolyser manufacturing capacity amounting to 3,000 MW per annum, further bolstering India's capacity to produce green hydrogen at scale.
***
Calculating Oxygen & Air Requirements from BOD and COD in Wastewater
ReplyDeleteIn practical wastewater treatment, BOD and COD aren't just water quality parameters — they are design drivers for aeration, microbial loading, and treatment process selection.
Here’s how we apply them:
1. Oxygen Requirement from BOD:
O₂ required (kg/day) =
Q × BOD × f / 1000
Where:
Q = Flow rate (m³/day)
BOD = Biochemical Oxygen Demand (mg/L)
f = Oxygen equivalent factor (typically 1.0 for complete oxidation)
Example:
Q = 500 m³/day, BOD = 300 mg/L
→ O₂ = (500 × 300) / 1000 = 150 kg/day
2. Air Requirement Calculation:
Air required (m³/hr) =
(O₂ required × 100) / (O₂ transfer efficiency × O₂ % in air × 1.429)
Typical values:
O₂ transfer efficiency (E): 15–35%
O₂ % in air: 23%
1.429 kg/m³ = Density of air at STP
This guides blower sizing and diffuser selection.
3. Diffuser Type Selection:
Diffuser Type Bubble Size Efficiency
Coarse Bubble 4–6 mm 10–15%
Fine Bubble (Disc) 1–3 mm 25–35%
Membrane Tube 1–2 mm 25–30%
Fine bubble diffusers are preferred for BOD removal due to better O₂ transfer.
4. Estimating Biodegradability from BOD/COD Ratio:
BOD/COD > 0.5 → Easily biodegradable
BOD/COD 0.3–0.5 → Moderate biodegradability
BOD/COD < 0.3 → Poor biodegradability (requires chemical or AOP treatment)
5. Biomass Yield (Y) and Microbial Growth:
Y = (VSS produced) / (BOD removed)
Used in designing aeration tanks and calculating sludge production.
You can also estimate Sludge Loading Rate (F/M ratio) and MLSS for activated sludge processes.
This is how environmental engineering turns water quality data into real-world design.
Let’s treat every drop like it matters!
https://www.nikunjbhoraniya.com/2019/01/8d-methodology.html
ReplyDelete