Calling Chennai thambis

[Paidithalli]

1 minute ago, LadiesTailor said:

Not so productive... aa pichakuntla politicians ki laptops color TVs lantivi free ga ivvadam telusu kaane aa money tho ila janalaki use ayye vaati meeda spend cheyyaru

True ...

[Ara_Tenkai]

9 minutes ago, LadiesTailor said:

Neither Krishna Nor Kaveri water ee season ki... alladi pothunnaru janalu akkada... Mars lo moon lo water vunda ane research badulu sea water ni ela drinking water ga marchali ane process pickup ayuthe chana mandi bagupadathatu...

drinking water varaku enduku....just soft water ga marchi..except drinking anni vatiki use chesthe saripoddi...

[aakathaai143]

7 minutes ago, AFDBAbhimanini said:

ee technology vundi and if I am not wrong chennai lo pedda facility kuda vundi. 

desalination ane process dwaara salt water ni pure water gaa maarchachu daaniki chaala karchu avthundi

[Paidithalli]

Singapore Lo akhariki kalajruthyalaki vadina water ni kuda recycle cheseskoni thaguthunnaru... 

marpu ekkado okachota Start avvali... Rajini vosthada? Kamal vosthada? Vijay vosthada ? Kadhu ... evadu vocchina at least basic necessities ayina janalaki andhela chudali anthe

[Kool_SRG]

2 minutes ago, Paidithalli said:

Singapore Lo akhariki kalajruthyalaki vadina water ni kuda recycle cheseskoni thaguthunnaru... 

marpu ekkado okachota Start avvali... Rajini vosthada? Kamal vosthada? Vijay vosthada ? Kadhu ... evadu vocchina at least basic necessities ayina janalaki andhela chudali anthe

Adhi thaagaru used for same bathroom and washing purpose ani talk..

[Hydrockers]

Oka roju tappinchi okaroju mrng 5 to 6:30 vastunai maki manjera water 

Water tank + ground lo unna well capacity rendu kalipi oka 4000 ltrs varaku untadi 

Oka 3 to 4 days water rakapoyina nenu safe

[Kool_SRG]

13 minutes ago, AFDBAbhimanini said:

ee technology vundi and if I am not wrong chennai lo pedda facility kuda vundi. 

Facility undi but its pretty costly and not sufficient...

[Hydrockers]

Monna oka interview lo oka peddayana antha karchu petti kaleshwaram kattatam avasarama annadu Mari drinking water Ela vastayo ayana gare cheppali

 

[aakathaai143]

maa ijjiwada lo no water problem

[Kool_SRG]

Nemmeli: Quenching Chennai’s thirst, but at what cost?

With increasingly erratic monsoons, water-sharing disputes with other states and steady decline in ground water levels, Chennai’s problems over water scarcity seem unrelenting. Not surprisingly, therefore, its two desalination plants in Nemmeli and Minjur hold great significance as far as meeting the city’s water needs is concerned. But are these solutions really optimal and ideal, or is there more beneath the surface?  

 

 

The operation of the Nemmeli desalination plant, located around 40 km from the heart of the city, began in 2013 after the technology was successfully piloted for the first time through the setting up of the Minjur plant in 2010. A new desalination plant at Perur in Nemmeli with a capacity of 400 mld has also been cleared and is expected to cost Rs 3912 crore.

Both the Minjur and Nemmeli plants currently have a capacity of 100 mld (million litres per day) and meet close to 30 percent of the city’s total water needs. And yet, the latter seems to come with a whole set of problems for a section of the people.

Collateral Damage

While the desalination plant has been a boon for the parched city, it has robbed a small fishing village of its livelihood. The Sulerikatukuppam village has a population of 1500 persons, including children. Post-tsunami, Rotary Clubs of Madras and Bombay supported the construction of 165 houses and several community structures on the beach. Most residents rely on the sea for their daily bread.

When the proposal to set up the sea water desalination plant in their village was mooted, the residents of the area were apprehensive. After repeated reassurance from officials — ranging from the collector of Kanchipuram to officials at the fisheries department — they allowed the setting up of the plant. In return, they were promised jobs at the plant, one for each household.

They were also offered a compensation of Rs 2000 per household per month, for loss of livelihoods, during the time of construction and operation of the plant. The villagers allege that while the company followed through on these assurances, they reneged on the promise of jobs and compensation after a year.

“We were told that one person from each house would get a job but they did not keep the promise. We were also told that we would be given land and be resettled in a different area once the plant became operational. That was also denied later. The plant has had a huge negative impact on the village as we do not get the same amount of fish anymore. The brine has killed all the fish and the plankton,” says Muthukrishnan S of Sulerikatukuppam.

According to design, the Nemmeli plant produces 60 mld of brine over the course of the desalination process. According to the mandate of the Coastal Regulation Zone rules, this brine water and other toxins produced as part of the process are to be released at least 500 metres into the sea. A quick inspection of the plant shows that the cement pipes laid to carry the brine water for discharge into the sea are now broken, resulting in a large quantum of untreated water being released by the beach and along the coastline.

Villagers say that since the setting up of the plant, the sea has advanced significantly. The dilapidated remains of two buildings, one a community centre and another an ice facility that was built by the Rotary club, stand destroyed allegedly due to changes in the nature of the coastline caused by the desalination plant.

Pipes that carry brine water broken, resulting in leakages on the shore. Pic: Prakash Ghimirey

“The buildings here were built by the Rotary club after the tsunami struck the village. When the plant was set up, huge rocks for the coffer dam were dumped into the sea to lay the pipes. They were supposed to be removed subsequently, but the company did not do that. This resulted in the sea advancing and the buildings getting destroyed. The sea has advanced by 500 metres since the plant became functional. We live in constant fear that it will advance further,” says K Shankar, a fisherman. 

“The erosion in Nemmeli was caused by the construction of a ramp to transfer equipment for the plant. The ramp was perpendicular to the coast and was in place for two years. This affected the littoral drift of sand and triggered the erosion as Nemmeli was a stable coast prior to this,” says Pooja Kumar, coordinator of the Coastal Resource Centre.

Impact on small enterprise

It’s not just the fisherfolk of Sulerikattukuppam who were affected by the changes in the coastline. P. Balaji, a homestay owner along the East Coast Road close to the village has grievances too.

“I bought land here in the late 2000s but had not constructed any building. When the desalination plant was set up, the land I had purchased went underwater due to the effects of its construction and operation. In 2013 I was not able to claim a portion of my land as the sea water had advanced there. Only around 2015 did the water recede a little and I was able to construct a bungalow here that I sometimes rent out to tourists. It has been a harrowing experience,” says Balaji.

Hatchery owner E Balasundaram lost the bulk of his business when the Sand Beach in Sulerikadu went under due to the plant. His business, Seven Staar Hatchery, was flooded by the sudden advancement of sea water. “I did not expect this at all. Around the time the plant was constructed, the villagers were protesting. One fine day my business too was affected as the premises got completely flooded. I had no recourse and had to shut down operations until the water receded. It has taken me years to get back on my feet after that incident.”

Out of sight, out of mind

The Fisheries Department which looks into the welfare of the fisherfolk has all but relinquished any responsibility for the residents of Sulerikattukuppam. “We heard about the problems of the fishermen. But if you ask me, some of them have been doing this (complaining) as they were promised jobs. They were not happy with what they were offered and have now started protesting against the plant”, says Thirunavukkarasu, Additional Director of Fisheries, Neelankarai.

While he adds that he is sure the residents have legitimate grievances, he also says that they did not receive any promise in writing at the time of setting up of the plant. He says that the fisheries department has not found anything out of the ordinary in the catchment area and that there is still fish available. As for the plant itself, the official said that it has been designed with the best possible specifications in terms of technology, but that whatever grievance the residents had might be because of how it is being operated.

The people however continue to voice their concerns. “Our families do not have jobs anymore. The groundwater has become too salty and there have been many instances of the villagers contracting diseases. We have not been able to link it to the plant as we do not have the resources to commission studies or investigations to provide proof.” 

“After the construction of the plant, the main issue has been the disposal of brine, which is supposed to be discharged where dilution is easier, but what is being done here is that the brine is let off on the beach; this makes the near-shore water becomes extremely saline, affecting fish breeding and affecting the catch”, says Pooja.

Brine pools on the shore as a result of broken pipes.

Muzzled voices

To add to their woes, villagers cannot rule out backlash against them. They had first  raised their voice against the plant once in 2013 right after its inauguration. But they were immediately stifled by a case lodged against them by the company. Close to 40 fishermen were imprisoned for over a month at the Puzhal prison. They had to fight a protracted legal battle to win the case and exonerate their men.

During that time, a fact-finding report by the Chennai Solidarity Group had visited the site, only to find that the authorities had violated several laws in the setting up and operation of the plant. The report stated

“.. the act of discharging wastewater on to the beach, thereby polluting the drinking water source of the village has violated the provisions of the Environmental Protection Act, 1986, and the Water (Prevention and Control of Pollution) Act. The Coastal Regulation Zone Notifications of 1991 and 2011 were also violated by (the act of) pumping out freshwater from the CRZ area..”

A comparison of the coastline through Google Earth, showing the changes since the construction of the plant. (L) May 2009 (R) January 2013

What lies ahead?

If the authorities go ahead with the plan to set up the new plant in Nemmeli, Sulerikatukuppam will be flanked by two desalination plants. Asked if the villagers plan to oppose the new facility if and when it is built, Muthukrishnan’s response is mellow.

“We will not be staging any protest. Four collectors have changed from the period the plant here was initialised until now. We have petitioned all of them and they are aware of the issue but have failed to act on it. We have spent a lot of money fighting the case they lodged against us. We cannot do it another time.”

“We do not have any fight left in us. If they want to build a new plant we will not oppose it, as we have resigned ourselves to fate. We do not want to go to prison again,” says Shankar too.

Despite the overriding feeling of resignation, the villagers of Sulerikatukuppam have tried to alert the adjoining Nemmeli kuppam about the dangers of agreeing to the construction of the new facility. They say that the fisherfolk there have also, like them, been enticed with promises of monthly compensation and offer of jobs to the educated youth of the area.

“Whenever our issues are brought up we have had the people and authorities say that this plant has been providing drinking water to thousands of people and that we should think of their welfare. But I want to ask, who is looking out for us? We are also part of this land. I am not against others benefitting from the water released by the plants, but people must also think, at what cost?” asks Muthukrishnan.

Efforts to reach VA Tech Wabag, the company operating the plant, did not yield any response from their end.

 

[Hydrockers]

Anni houses ki inkundugunta greenery kalipi minimum 10% unde la rule pettali 

Ala chesina vallaki property tax oka 2 or 3 years tagginchi migita vallaki double cheyali appudu kani darloki raru

[Kool_SRG]

Rs 1.36 crore a day for just 200 million litres of water; can Chennai really afford desalination plants?

Reports about a third desalination plant, with a capacity of 550 million litres a day (MLD), have raised hopes among Chennaites. Convinced that their water woes can be successfully addressed with advanced technology, citizens welcome the state government’s proposal of the plant that would make sea water potable. But, are desalination plants really the solution we need?

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Environmentalists are often deeply critical of pollution caused by desalination plants. But, even if we put aside the concerns around environmental damage  for the present discussion, desalination plants themselves do not appear to be economically viable for the city.

An extravagant affair

The government spends a mammoth Rs 1.36 crore every day in Operational and Maintenance (O&M) costs to source 200 MLD water from the existing desalination plants at Minjur and Nemmeli.  This hefty drain on the exchequer could be reduced by more than four times if we can rely on surface water resources — lakes, ponds and quarries.

In simpler terms, the government would be spending only Rs 29 lakh to acquire the same amount of water from the water bodies of Chennai. That should not be a great challenge given that the proposed Chennai Metropolitan Area is blessed with 4100 water bodies, as pointed out by S Janakarajan, retired professor of MIDS.

This expenditure of Rs 29 lakh is on account of operations and maintenance of plants that treat water from the water bodies to make it potable. Presently, the city is already sourcing 30 MLD water from Sikkarayapuram quarries and distributing it to the general public, after treating it at Chembarambakkam plant. The 4MLD water sourced at Porur lake is quenching the thirst of the Porur and Poonamalle residents.

“Nearly 4 lakh people were supplied safe drinking water from these sources during the drought in 2017. Mogappair, Alandur, Valasarawakkam, Porur, Ramapuram, Nandambakkam and adjacent areas benefitted from these works,” said a press releasefrom Chennai Metro Water.

The figures say it all

Data shared by Chennai Metrowater Supply and Sewerage Department (CMWSSD) specifies the breakup of the expenditure on various modes of procuring water as in the table below:

Source	Capital Cost per MLD (in Rs)	O & M Cost per MLD (in Rs)
Desalination plants	15.30 crores	68,000
Surface Water resources	7.70 crores	6000-23,000 (average of 14,500)

(Source: Chennai Metrowater Supply and Sewerage Department)

Minjur and Nemmeli plants yield 100 MLD water each, amounting to 200 MLD. The cost of converting the saline water to potable drinking water (of 200 MLD) can then be estimated at Rs 1.36 crore (68,000*200).

Thus the above table indicates that the state government spends close to Rs 500 crore per annum to get just about a fourth of Chennai’s water requirement (of more than 830 MLD).  The current cost of procurement of 200 MLD from desalination plants is higher than the 450 MLD sourced from the four reservoirs, agricultural wells and quarries.

The capital cost per MLD of a desalination plant is again double that of water treatment plants. The capital cost to tap water from surface water resources includes laying pipelines and setting up treatment plants. “But it is not necessary to set up a treatment plant at every lake at that cost. We could divert water from the lakes to the existing plants for treatment,” said a water expert, choosing anonymity.

Chennai Metro Water sources 30MLD from Sikkarayapuram quarries. The water is treated and supplied at an expense of less than Rs 14,500 per MLD, whereas the same takes Rs 68,000 in desalination plants.  Pic: Laasya Shekhar

Surface water vs desalination plants

In order to explore new sources to augment the city’s water supply, Chennai Metro Water had identified 13 lakes and six quarries for a feasibility study in 2018.  The success stories of tapping water from Porur lake (4MLD) and Sikarayapuram quarries (30MLD) encouraged the Metro water department to conduct hydrography surveys at these 19 water bodies. Water from these sources is currently being treated, before it can be supplied to the general public.

As per the press release, the officials of the department finalised these 19 water bodies after a direct visit. CMWSSB has also drawn up a plan to complete the study for the remaining lakes completely. “The study will include Hydrography survey for estimation of quantity, water quality survey, for pipeline feasibility,” the press release stated.

“Even if ten water bodies are finalised where we may implement the Porur lake model, and if we could tap as less as 20 MLD from each of these large water bodies, we would not need desalination plants at all. All we need to do is to restore these lakes,” said the water expert.

The advantages of tapping surface water resources also came from the horse’s mouth. “The very less gestation period and relatively lower cost of these works are significant. The 34 MLD total supply capacity of quarry and Porur works were completed at a very short duration of three months,” the CMWSSB press release stated.

“Chennai generates over 1000 MLD sewage each day. The cost of treating sewage is less than converting saline water into potable water. Desalination plants are ecologically unsound and prohibitively expensive,” said retired professor Janakarajan.

The solution

Our water problems are essentially due to mismanagement of water bodies, and Chennai is not a rain-starved city. “Chennai’s average annual rainfall of 139 cm is sufficient to recharge its aquifers. We don’t have perennial rivers, but we have abundant surface water resources. The city of London, with just 60 cm of annual average rainfall, relies on surface water resources. It is shameful that we have opted for the extravagant choice of desalination plants instead,” said Sai Praneeth, Director, Hydro-Meteorological Innovative and Explorative Solutions (HYMIES).

All of this only points afresh to the old, repeated emphasis on de-silting, interlinking of water bodies and improvement of catchment areas for better inflow of run-off water.

[Kool_SRG]

20 minutes ago, Ara_Tenkai said:

drinking water varaku enduku....just soft water ga marchi..except drinking anni vatiki use chesthe saripoddi...

For that only it a pretty costly and teadious thing paina article posted read on your convenience....

[Paidithalli]

5 minutes ago, Hydrockers said:

Monna oka interview lo oka peddayana antha karchu petti kaleshwaram kattatam avasarama annadu Mari drinking water Ela vastayo ayana gare cheppali

 

Mission kakatiya for drinking water... Kaleswaram for agriculture...  Hyderabad lo before trs govt kuda peddhaga water problem ledhu ...(makayithe except 2011 summer eppudu tanker latho water nimpe avasaram raledhu)  

pros&cons rendu unnayi mission kakatiya Lo ...

except Hyderabad ... chala places lo municipality water evaru thagaru... endhukante muriki neella lagane vosthayi...

hyderabad lo mathram chala better ... 🙏🙏 thanks to ysr&kcr

[Ara_Tenkai]

12 minutes ago, Kool_SRG said:

For that only it a pretty costly and teadious thing paina article posted read on your convenience....

Chusa bro...Ya good article... everything is expensive when they first invent... but R&D chestu unte and when we don't have any options it will become cheaper...

 

Aslo I dont know why governments is not banning the plastic completely... Oka 2-3 years deadline ichi inka complete ban ani cheppali...