All about Green Bridge
1What is a Green Bridge?
Green BridgeTM eco-technology is a horizontal filtration system which treats the polluted streams, drains and rivers with the help of microbial consortia, sand, gravel and boulders. The system is designed to be compact and miniaturised in-situ bioremediation treatment system and can also treat industrial and domestic effluents.
2How big a river can a Green Bridge handle?
Green Bridges are installed at polluted rivers, streams, and drains of all sizes.
It has a capacity to treat 0.5 – 600 MLD without the need to create a diversion from the main river / drain.
Constructed drains with smaller widths, mostly those which run through a township or a city are treated with Eco-chains.
3Will GWRPL give all detailed drawings of all the construction work to be done by the customer?
GWRPL will give scope drawings for construction of Green Bridges after receiving the techno-commercially clear order. The installation work will be done under the supervision of a GWRPL qualified engineer.
4What is the life expectancy of this system, without major capital expenses involved?
10 – 25 years.
5What is the cost of a Green Bridge?
Since all our eco-technologies and their relevant services are tailor-made to suit your requirements, a detailed costing worksheet can be done only after receiving initial inputs given by the customer by filling the Technical Data Sheet
Until date, the costing for Green Bridges that have been installed for 0.5 to 600 MLD have ranged between Rs. 40 lakhs to Rs. 20 crore.
6Mention the retention time for the treatment required?
No electrical and mechanical energy required to treat wastewater.
8Can treated water be used for agriculture?
Yes, treated water can be used for irrigation purposes. In fact, in our past projects when the treated water was used for irrigation, the farmers reported a high quality yield. In addition, the domestic animals also began visiting the river / drain to drink water. Aquatic biodiversity also flourished.
All about Soil Scape Filter
1What is a Soil Scape Filter?
It is a simple filtration process through layers of gravel, sand and biologically activated soil material. When dirty water percolates downwards, the pollutants are absorbed in biologically activated soil materials and get completely degraded in them over a period of time.
This technology is 100% tailor made!
2What is the efficiency of a Soil Scape Filter?
Biological active material is the key component in this filter which absorbs pollutants and makes it available for biological degradation. Pollution reduction is to the tune of 90-95%. It removes fecal coliforms (bacterial indicator of pathogens) upto 99.5%.
3What are the living components of the Soil Scape Filter system?
Living components of the soil scape filtration system are varying groups of bacteria, fungi, algae and large green plants which form “dead/waste matter (detritus) food chain”. Dead-waste matter gets assimilated in natural cycles. Hence the soil scape filtration is similar to the natural forests or swamp ecosystems.
4What will be the appearance of treated water?
The smell and colour reduces about 90-95%. The oxygen content increases from zero to 4-5 mg/l. The toxicity of wastewater reduces by 90-95%. This is a living wastewater treatment system, hence, there will be some amount of naturally caused smell or some colour may be imparted because of the presence of biological solids in the waste. That does not mean that it’s not treating pollution.
5Will GWRPL give all detailed drawings of all the construction work to be done by the customer?
GWRPL will give scope drawings and flow charts for construction of tanks after receiving the techno-commercially clear order.
6Will your technical supervision on construction, assure quality of construction?
Yes, and on request. GWRPL’s experts can visit the site twice / thrice during construction (max. 2 – 3 labour-days) to assess the construction work done and suggest changes if required.
7What is the life expectancy of this system, without major capital expenses involved?
10 – 25 years.
8Please help us by giving a list of all the items, equipment, materials, piping, valves and any other items required to install your total scheme. This will help us in finding out the total and hidden costs.
Since all our eco-technologies and their relevant services are tailor-made to suit your requirements, a detailed costing worksheet can be done only after receiving initial inputs given by the customer. Click here to fill in the Technical Data Sheet or schedule a FREE appointment with our experts.
9Do you take further AMC as O and M contract, to run this scheme successfully in the future? What are the fees for the same?
- For routine maintenance, GWRPL can train local unskilled people.
- For troubleshooting, GWRPL can provide off site and onsite guidance with applicable charges.
- GWRPL’s experts can visit the site twice in the year on chargeable basis to know the operational problems and suggest remedial measures. GWRPL will charge as per prevailing site visit charges exclusive of travel, food and accommodation, and applicable taxes. A report mentioning the recommended modifications will be sent via email.
10Mention the retention time for the treatment required?
There is no retention time, but filtration time ranges from 10 – 30 min.
If gravity benefits – zero requirement of electricity for treatment.
12If a plant has to be designed for a terrace, what will be the change in the design of the filter?
There will be no change in the design of the filter. Depending on the space availability we have to make a choice of single stage or double stage. Also we should take care that terrace should be able to bear the load.
Click here to fill in the Technical Data Sheet or schedule a FREE appointment with our experts.
13What will happen to the system in the dry season when discharge does not occur, will plants not die in the absence of the water?
Minimal watering of plants, and keeping the microbial consortia moist is necessary for survival during a no-discharge period extending more than 3 days.
14What will happen if effluent contains higher salt concentration?
System is salt tolerant; We are currently engaged in R&D to reduce the salt concentration.
Which other technologies does GWRPL have?
1SMFU for lakes, ponds and temple kunds
In this filtration system, wastewater is filtered through different layers of biologically activated filtration medium provided at the periphery of the lake, pond or kund of any size.
It can be used on any type of terrain or in any geographical conditions, and in urban and rural areas.
2Eco-Chains for constructed drains with smaller widths
Improve surrounding hygiene;
Improvement in groundwater quality and quantity over time
Odour control; better environmental conditions for local population
Outlet of CETP (Common Effluent Treatment Plant) of the industrial area is treated without using electricity, machinery, and chemicals.
HRTS at Ranjangaon MIDC which treats the outlet of a CETP.
The electrostatic waves travel through the entire piping system and creates ‘nucleation seeds’ on which scaling happens.
Treated water helps reduce hair loss, as well as skin diseases, and increases heat transfer efficiency.