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H2O Dynamics India Ltd Acquires Advanced Technologies from BARC — Textile Effluent Treatment — Oil Contaminant Removal — UF Fibre Production — Hybrid Granular Sewage Treatment.

FAQs

Frequently Asked Questions (FAQ)

The hgSBR technology has been developed and well designed by the premier research organization, Bhabha Atomic Research Centre (BARC), under the Department of Atomic Energy, Government of India, and is patented by the Government of India. This technology was deployed and monitored during Mahakumbh-2025 at Prayagraj for FSTP/STP applications under the supervision of the National Green Tribunal (NGT).

Performance monitoring and evaluation were carried out by IIT Chennai, IIT Kanpur, IIT Delhi, and MNIT Prayagraj. Water quality was regularly tested and monitored, including independent assessment by Harvard University. The treated effluent consistently met the discharge norms prescribed by MOEF/ NGT / UPPCB.

Water quality testing was conducted by the above-mentioned IITs and MNIT, and the corresponding test reports of MNIT are attached with this document.

Additionally, at Dasna, District Ghaziabad (Uttar Pradesh), a critical STP handling drain sewage has been successfully operated using this technology, and performance results have been issued by the NGT. A copy of the relevant documentation is attached.

The key advantage of this technology is its ability to consistently achieve the desired treatment parameters as per Indian standards, as well as the norms prescribed by MPCB and other regulatory monitoring bodies. The treated wastewater is suitable for non-contact reuse applications such as toilet flushing, gardening, car washing, and farming.

However, if the treated water is intended for contact applications such as bathing or clothes washing, additional tertiary treatment—such as Ultrafiltration (UF) and Nanofiltration (NF)—is required.

The technical datasheets for all projected related tanks are provided as attachments. Below is an at-a-glance overview. :
Sr. No. Tank's Purpose Tanks MOC
01 Sewage Receiving/Collection RCC in M25 grade concrete, designed to safely bear a load of 100 KL on top of the reactor tank.
02 BARC Design hgSBR Reactor Reactor manufactured using state-of-the-art glass-fused-to-steel tank technology.
03 Treated Water Storage Tank manufactured by Zink Aluminium with reinforced liners consisting of a heavy-duty homogeneous impervious membrane with internal woven mat or scrim. Food Grade.
04 Hydroheal Reactor Tank made by HDPE/GFS for better Ozone reaction.

In hgSBR technology, sludge generation is minimal and can be treated using a small quantity of calcium and ozone. Hence, no significant additional cost is required for treating the sludge for use in gardening purposes.

In view of peak sewage inflow during morning and evening hours, the sewage collection tank is designed to provide storage capacity for two reactor batch operations. Each batch has a cycle time of 4 hours. Accordingly, the plant will operate 6 batches per day over a 24-hour period, as detailed below.

Raw Sewage Sump:-
Sewage inlet to the plant Sewage inlet is taped from existing pipe line and flow is adjusted to screen/grit chamber as per design flow.
Required volume Exchange volume x Number of reactor x number of cycle
= 90.0 x 1 x 2.0
= 180.00 m³
Total volume
(Including free board and dead vol.)		 = 180.00 m³ x 1.1
= 200.00 m³ approx
Size of sump As per site condition according to above volume and minimum 2 batch operation capacity
HgSBR Reactor batch operation time 4 Hours and 6 batch in 24 hours
Nozzle Inlet nozzle – 150 NB
Outlet nozzle – 125/150 NB
Grit chamber connecting nozzle
Air mixing line connecting nozzle – 50 NB
Overflow – 150 NB
Setling zone in raw water collection 300 mm at bottom of the tank

The concept of bio-bead cultivation for wastewater treatment was developed and applied for obtaining an Indian patent. Pilot-scale studies conducted since 2016 have demonstrated stable and consistent treatment performance on real sewage. Following the successful pilot studies, multiple full-scale hybrid granular SBR-based sewage treatment plants have been commissioned and successfully operating. This technology treats wastewater as per the following details:

Parameter Inlet Outlet
COD (mg/l) 450–600 <20
BOD (mg/l) 150–250 <10
TN (mg/l) 13–30 <10
TP (mg/l) 4–6 <2
TSS (mg/l) 150–200 <20
FC (/100 ml) 106 <200
pH 7–8.5 7–8.5


Compact and dense fast settling microbial aggregates; microorganisms in the self-produced exopolymer matrix; get quick separated from the treated wastewater under idle condition.

Parameter hgSBR Others
Biological characteristics
Biomass type Granules, >0.1 mm Flocs, ~0.1 mm
Settling velocities 40 – 80 m/h <10 m/h
Biomass levels ~10 g/l ~4 g/l
Nutrient removal NH4+ → NO2- → N2
[partial nitrification] 		NH4+ → NO3- → N2
[requires more O2]

This is to bring to your kind notice that we are a scientific organization working towards the betterment of the environment and society in our country. We are actively serving across multiple sectors, including the Indian Army, Indian Railways, hospitals, schools, colleges, universities, BCCI, Department of Atomic Energy, ashrams, residential societies, and State Government organizations.

We have successfully executed several sewage treatment projects, including a 100 KLD STP for the Indian Railways Officers’ Colony under RVNL, a 300 KLD STP for a girls’ residential colony at Shirdi, and a 500 KLD STP for a common residential colony at Atma Malik Colony near Kopargaon.

Photographs of the completed installations are attached for your kind reference.

We have attached a two-year-old water quality test report issued by a NABL-accredited laboratory for your reference.