India

OPINION: Renewable energy-based desalination could resolve India’s perennial water woes.

The ever-increasing demand for potable water is exerting tremendous stress on our existing consumable water resources. Water covers a little over 70 per cent of the earths surface, and by this we erroneously presume that there is adequate potable water. Realistically, only 3 per cent of this water is potable.

According to a study in Science Advances, some African and Asian countries face severe water scarcity for almost the entire year. The same study also reveals that India suffers from water scarcity for over seven months a year.

 

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India Considers New Desal Plant For Tutuicorin Irrigation.

India’s water resources minister Nitin Gadkari has said the government is considering a proposal to set up a desalination plant in Tuticorin for using seawater for irrigation.

He further commented that there is no scarcity of water in the country but “we have to improve upon the planning and management of water resources.

 

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Karnataka approves techno-economical feasibility report for a desalination plant in Mangaluru.

Desalination plants may be the lifeline of Gulf countries, but severe water shortage is forcing even the Karnataka government to set up one in coastal Karnataka, a region that receives good rainfall and has a number of rivers.

With Law and Parliamentary Affairs Minister TB Jayachandra approving the techno economical feasibility report to establish the state’s first desalination plant for potable water supply to Mangaluru City at an estimated cost Rs 805 crore, we take a look at the ins and outs of the project.

 

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Centre clears mega 400 MLD desalination plant in Chennai.

After several delays, decks are cleared for the 400 million litres per day (MLD) mega desalination plant at Perur, Nemmeli, in Kancheepuram district, along East Coast Road.

The Expert Appraisal Committee (EAC) of Ministry of Environment, Forests and Climate Change has recommended grant of Coastal Regulation Zone (CRZ) clearance.

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Villagers demand closure of South Ganga Water Technology Private Limited desalination plant

Residents of Krishnapuram and nearby villages staged a protest at the Collectorate, demanding the closure of South Ganga Water Technology Private Limited, a private desalination plant, alleging that its effluents posed serious health hazards. Led by M. Karunamurthy, district secretary of the CITU affiliated to Tamil Nadu Meenpidi Thozhirsanga Koottamaippu, people from Krishnapuram, Pudukudiuruppu and Panaikulam thronged the Collectorate here on Thursday and raising slogans, demanding the permanent closure of the plant. Earlier, they gathered at the entrance of the Collectorate complex and attempted to take march blindfolded, but Deputy Superintendent of Police (DSP) Natarajan persuaded them to give up the stir. Later, they assembled inside the Collectorate and staged the agitation. Mr. Karunamurthy said after the district administration ordered suspension of operation of the plant in July last, for failing to set right the infrastructures and carrying out modifications as per the guidelines, the management produced completion certificates and the Revenue Divisional Officer (RDO) has permitted the company to resume operations from January. The protestors objected to the permission, alleging that the plant had done enough problems to the residents of Krishnapuram and nearby villages and it should not be allowed to operate until it was held accountable especially for polluting the groundwater sources and the local oorani (water body) by letting out chemical effluents. Two people have died of kidney ailments after consuming the contaminated water and the plant should be held responsible for the deaths, Mr. Karunamurthy said. The villagers also opposed to desilting the Annavi Oorani, which was used by the plant to store the effluents. The water body was the only evidence for the destruction caused by the plant and the desilting would amount to destroying the evidence, they said. They urged Collector S. Natarajan to cancel the permission order given by the RDO and protect their interests. The Collector said he would look into the issue and take necessary action. The 0.5 MLD desalination plant had been functioning in the village since 2005 and has been supplying treated water to the gas based power plants at Vazhuthur.

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Innovative Water Treatment Technologies – India

…. We have a very new solution – the low energy membrane system. It was launched a few months ago. The aim is to ensure environmental protection by employing water recycling. This saves 10-20% of energy depending on the water flow. In the Indian context, there are some industries where quality of water is not that good and where energy usage is high. Here we use ULP (Ultra Low Pressure) membrane where consumption of water is very less. This technology finds application in heavy industry like fertilisers and textiles. LANXESS is introducing its highperformance Lewabrane reverse osmosis membranes, Lewatit ion exchange resins and Bayoxide iron oxide adsorbers for water treatment. LANXESS’ business unit Liquid Purification Technologies (LPT), one of the leading manufacturers of reverse osmosis membranes, ion exchange resins, adsorbers and functional polymers, offers its premium products from the Lewabrane®, Lewatit® and Bayoxide® range, which play a key role in the fields of industrial water treatment, food and beverages, catalysis, chemicals processing and seawater desalination.

What is the approach of Lanxess when it comes to its customers?

Lanxess has been a leader in the field of ion exchange resins for 75 years. We not only manufacture the product but also offer solutions to the customers on how they can clean water. We can estimate the current availability of water and the target consumption. This helps the customer manage with what they have.

LANXESS will demonstrate how its products and services meet the responsibility of curbing pollution, fighting water scarcity and creating a safer and cleaner environment. Also, LANXESS’ product range of ion exchange resins and membranes can be designed in many industrial processes to produce no or minimal liquid discharge (ZLD/MLD). If water can be used several times for the same process steps, e.g. for multi-phase reactions or rinsing, fresh water consumption and the product-specific wastewater volume can be reduced.

Tell us some more about your software – LewaPlus ®. Lanxess is the only company in the world that offers a software for resins and membranes put together in one package.

This software is used to design and control the quality of water. Once the input and output data parameters are set, the software gives all permutations and combinations of inlet and outlet quality of water for the reverse osmosis process. The software suggests elements that need to be balanced and the treatment that is to be given. The software is LANXESS India has recently launched innovative water and wastewater treatment, and air purification. Clean India Journal speaks to Prakash Shanmugam, GM – BU LPT, LANXESS India, and Dr. Michael Pies, Head of Production & Technology, BU LPT, LANXESS to understand more available on the website for customers to do their own analysis in a userfriendly way.

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Maintenance at Nemmeli desalination Plant will disrupted water supply for two days – India – Chennai

Water supply to parts of south Chennai will be disrupted on Thursday and Friday as the desalination plant in Nemmeli undergoes maintenance work.  Production at the plant, which has the capacity to treat and produce 100 million litre of water per day, will be stopped from 6am on October 12 till 6pm the next day. The areas that are likely to be affected are Adyar, Velachery, Besant Nagar, Sholinganallur, Injambakkam, Neelankarai, Kottivakkam, Perungudi, Palavakkam, Thiruvanmiyur, Mandaiveli and Mylapore….

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20.000 m³/d desalination plant at Uran unit in Raigad, Maharashtra – India

State-run ONGC has received the coastal regulatory zone (CRZ) clearance for setting up a seawater desalination plant at its Uran unit in Raigad, Maharashtra at a cost of Rs 266.40 crore, according to an official letter issued to the company. The proposal is to set up a seawater desalination plant with a capacity to process 20 million litres per day (MLD). The proposed site is about 380 meters away from the high tide line (HTL) of Arabian Sea, along the western coast of India. Desalination is a process to remove dissolved minerals from feed water sources such as seawater and brackish water. Desalination of seawater is being increasingly adopted worldwide to cope with the deficit in availability of potable water. In the letter, the environment ministry said it has given the CRZ clearance for establishing a desalination plant in Maharashtra after taking into account the recommendation of its expert panel. The approval is subject to compliance of certain conditions such as obtaining of ‘no objection certificate’ from Maharashtra Pollution Control Board for discharge of brine water into the sea after necessary safeguards, it said. The proposed desalination plant will be set up within the gas processing facility of ONGC Uran. About 8,750 square meter area has been earmarked for this purpose. The cost of the project is estimated at Rs 266.40 crore. According to ONGC, the proposed project will cater process water and drinking water to the tune of 18 MLD and 2 MLD, respectively. It will help the company reduce its dependence on the State Water Supply Board. Exploration giant ONGC contributes 72 percent to the country’s total crude oil production and 48 percent of natural gas. It owns and operates 11,000 km of pipelines in the country and produces more than 1.27 million barrels of oil equivalent per day. …

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Mangalore Refinery and Petrochemicals Ltd (MRPL) is planning to set up desalination plant in Mangaluru – India

The annual report of the company for 2016-17 says that it has got permission from the Karnataka government to set up a desalination plant in Mangaluru. Feasibility studies, along with studies for environment impact assessment, are being done.

The project is expected to be commissioned in 2019-20, it said. It may be mentioned here that the water crisis in Mangaluru had resulted in partial shut down of the units of the refinery complex during April and May last year.

In fact, the annual report has listed ‘water availability’ as one of the risk factors in its annual report for 2016-17.

The company is also planning to harvest solar energy in a better way. The annual report said that feasibility study has been completed for setting up of rooftop solar power plant.

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Chennai Water Crisis: It is Time You Know What is Happening – India

facing the brunt of the worst drought Tamil Nadu has seen in over 140 years. A city that was receiving 830 million litres of water a day (MLD), has now been left reeling with a supply of a mere 470 MLD. Metrowater authorities, when questioned about the severe shortage, threw their hands up and blamed the lack of monsoon rains.

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