News

Notifier Stop – Future of RO Membranes S-001-2018

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Evoqua’s modules in wastewater recovery and reuse

EDR skid featuring two NEXED6-8A-0 modules. A new installation of Evoqua’s NEXED Electrodialysis Reversal (EDR) module, part of the Ionpure product family, is up and running. The EDR system recovers Reverse Osmosis wastewater which was previously sent to drain. 85% of wastewater recovered. – The system was engineered and built by Agape Water Solutions, Inc. and installed by Northeast Water Services Inc. Nexed technology treats Reverse Osmosis concentrate with varying salinity and recovers 85% of the wastewater. The recovered 85% is of equal or better quality than the RO feed water and is returned to the RO inlet. Northeast Water Services Inc proposed the system in response to the client’s exact needs for water quality and recovery rate. Automatic controls are programmed by Agape Water Solutions using Evoqua’s proprietary automatic current algorithm for its Ionpure and Nexed modules. This continuously and automatically adjusts power supplied to the modules to maintain product conductivity, without wasting more power.  Specifically, the skid was custom engineered using two Nexed 6-8A-0 modules to reliably produce a total of 20 gallons per minute (75 l/min). Agape Water Solutions and Evoqua were selected, as the customer was impressed with the first EDR pilot system, built in 2015.

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Teshie, Nungua residents struggle for water – Ghana

Residents of Teshie, Nungua and other surrounding communities have expressed their dissatisfaction at the quality and consistency of water supply to the area following the shutdown of the desalination plant by the Ghana Water Company. According to them, they received water two or three days in a week and it comes at dawn making life unbearable for them. Others also complain bitterly about the quality of the water, lamenting that it has a brownish colour with an unpleasant smell and poses serious health risks to them. The Ghana Water Company directed the shutdown of the plant effective January 1, 2018 for the renegotiation of the contractual agreement between the company and the managers of the plant, Messrs Befessa. The statement further indicated that the Accra and Tema Booster stations will serve as alternative water sources for the affected areas. Some of the affected areas include Teshie, Nungua, Sakumuno, Laashibi, Communities 16,17 and 18Adorgono, Baatsona, Coastal Estates, Greda Estates, Regimanuel Estates, all of Spintex Road and surrounding communities. ABOUT THE DESALINATION PLANT – The Accra seawater desalination plant is located at Nungua in the Kpeshie district and is the first desalination plant built in Ghana.The plant started commercial operation in March 2015 and was officially inaugurated in April 2015. The $125m project has a capacity to desalinate 60,000m3 of sea water daily providing fresh water to more than 300,000 people in various municipalities of the Greater Accra administrative region. It marks a significant step in improving drinking water facilities in the country, which is witnessing rapid population growth. The plant was designed, constructed and is being operated by Befesa Desalination Developments Ghana, a joint venture of Abengoa Water Investments Ghana, Daye Water Investment (Ghana), and local partner Hydrocol. Befesa operates and is supposed to maintain the plant for 25 years. Construction started in November 2012, creating 400 direct and indirect jobs in the region. Citi News’ Anass Seidu visited some of the affected areas and filed this report.

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Delek Automotive Systems Ltd. negotiating buy control of Veridis (formerly part of Veolia International)

Veridis, formerly part of Veolia International, is active in waste disposal, desalination, and power production in Israel. Delek Automotive Systems Ltd. (TASE: DLEA), which imports and sells Mazda, Ford and BMW vehicles in Israel, announced today that it was negotiating with a Luxembourgeois company to buy control of Veridis (formerly part of Veolia International).  Delek Automotive Systems, headed by Gil Agmon, has made a binding offer of NIS 1.05 billion. Veridis is active in Israel in environmental infrastructure. It deals in collection, treatment and recycling of urban waste and handling of dangerous materials, water desalination, power production and energy solutions. Delek Automotive Systems said the deal was subject to approval of a final agreement between the sides and approval by the Antitrust Commissioner. Delek Automotive Systems says the deal “represents a business opportunity that enables it to penetrate new areas of activity that, it believes, have substantial growth potential that will produce results mainly in the long term.” Last month, Delek Automotive Systems reported a 2.5% rise in third quarter revenue to NIS 834 million and a flat net profit of NIS 80 million, of which NISD 75 million was distributed as a dividend. In previous quarters, Delek Automotive Systems suffered from weakness in sales of Mazda vehicles, one of the most popular brands in Israel. Altogether it sold 17,900 cars in the first three quarters of 2017, 9% fewer than in the corresponding period of 2016, with sales of Mazda cars down by a similar percentage to 11,700, while Ford sales plummeted 21% to 3,650. By contrast, demand for the prestige cars that the company imports was buoyant, and sales of BMW cars rose 10% to over 3,300. Thanks to changes in finance expenses offsetting a decline in gross and operating profit, net profit for the first nine months of 2017 was up 13% to NIS 275 million.

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Membrane-Based Salinity Gradient Processes for Desalination Handbook

Two Swansea University chemical engineering academics have written a handbook which reviews current state-of-the-art developments in salinity gradient processes in desalination, one of the most promising technologies to improve energy efficiency in desalination. The impending crisis posed by water stress and poor sanitation represents one of the greatest human challenges for the 21st century, and membrane technology has emerged as a serious contender to confront the crisis on a global scale. Seawater desalination is poised to become one of the main alternative freshwater resources as almost 60% of the world’s population live less than 36 miles from a seacoast. Membrane-based processes and desalination have emerged as technologies that will answer these challenges. Market predictions point to a global desalination market of US$52.4 billion in 2020, an increase of 320% from 2010. Professor Nidal Hilal, Director of the Centre for Water Advanced Technologies and Environmental Research (CWATER) at Swansea University and Editor-in-Chief of the International journal Desalination, and Dr Sarper Sarp, Lecturer in Chemical Engineering, both from the College of Engineering, Swansea University are the co-authors of the handbook titled Membrane-Based Salinity Gradient Processes for Desalination. The book topics span various types of salinity gradient processes for desalination such as forward osmosis (FO) and pressure retarded osmosis (PRO), including the novel membranes, process developments and case studies. The book also highlights full-scale application approaches. A big part of the publication is dedicated to membrane types, developments and optimisation, including thin-film composite and hollow fibre membranes. Membrane-Based Salinity Gradient Processes for Desalination, ISBN 13: 9780444639615, will be published in July 2018.

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6 power and water companies to launch IPOs in next 3 years – Muscat- Oman

 As many as six power generation and water desalination companies will launch their initial public offerings (IPOs) to list on the Muscat Securities Market (MSM) within three years, according to Oman Power and Water Procurement Company (OPWP). As per their project founders agreements, Oman’s independent water and independent power projects are required to offer a minimum 35 per cent of the share capital to the public within four years of the incorporation of the company. ‘There are six power and water sector projects that will be going for IPOs within next three years. Out of these six projects, four IPOs will be from power sector and two from water sector,’ Eng Yaqoob Saif Hamood al Kiyumi, chief executive officer of OPWP told Muscat Daily recently. Kiyumi said that the power and water sector companies currently account for approximately RO400mn of market capitalisation on the MSM. ‘We should see a large amount of additional capital to be listed on the stock market from these six new IPOs. With the sound record of these projects, I am sure they will only increase sector’s contribution to Oman’s capital market,’ he said. Kiyumi said, ‘The huge success of previous power and water companies’ IPOs provides a clear indication of investors’ faith in the development of Oman’s power and water sectors.’ Recently, Muscat City Desalination Company (MCDC) completed its IPO which was oversubscribed nearly 19 times. The shares of MCDC surged more than 35 per cent on listing at the Muscat Securities Market on Tuesday.Kiyumi said that the clarity in Oman’s regulatory processes created a friendly environment for developers and investors in power and water sectors. ‘There is a fair and transparent competition in the sector that will further enhance investors’ appetite to invest in power and water projects,’ he added.

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Battery electrode deionization (BDI) -improvement of capacitive deionization (CDI)

A feed solution contained in a reservoir was separately fed to the two inlets of the flow cell using pumps, one desalinated and the other concentrated. This is achieved by applying electrical current to the flow cell through wires using a power source (not shown in this photo). The conductivity of the discharge was then measured using flow conductivity meters located at each outlet, which were monitored by computer. Credit: Taeyoung Kim

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Rich Mesostructures Derived from Natural Woods for Solar Steam Generation

A tree is a living energy-water system. Intensive study of tree-derived natural wood is of great significance for the sustainable development of human civilization and reduced dependence on nonrenewable resources. Here, we report on the mesostructures of several natural wood materials as well as their thermal conductivities and mechanical properties. We found that natural wood, including hardwood and softwood, possesses excellent hydrophilicity, an interconnected pore network, low thermal conductivity, and various mechanical properties. Inspired by the critical ecological energy-water nexus, high-efficiency solar steam generation based on natural wood is demonstrated in this work. The variation in multiple natural wood microstructures results in significantly different solar steam generation performances, with the more porous wood showing higher evaporation efficiency based on our results. The inherent rich mesostructures, aligned microchannels, and favorable hydrophilicity enable natural wood materials to be applied in many other fields of the energy-water nexus

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Egyptian government seeks to use its surplus electricity production in the construction and operation of new desalination plants

The Egyptian government seeks to use its surplus electricity production in the construction and operation of new desalination plants to bridge the potential water gap in Egypt. Government sources said that Egypt surplus electricity production currently stands at 6,000 MW per day, and will increase to 10,000 MW in the summer, benefiting from the added capacities from Siemens new power plants in the New Administrative Capital, Brulus, and Beni Suef. The sources added that the government is currently in talks with five international companies, including Schneider Electric and Siemens AG, to establish desalination plants in cooperation with the Armed Forces Engineering Authority. The government seeks to expand in the construction of desalination plants in the coastal governorates to meet the growing needs of fresh water. The planned plants aim to produce 1m cubic metres of desalinated seawater per day within three years. The Egyptian Electricity Holding Company has developed a new strategy to deal with the surplus of electricity production, while a large number of power plants will work at half-capacity to avoid wasting electricity production. Some production units will be halted for maintenance, provided that the production capacity meets the market’s needs. The government will also close all old power plants with lifetimes that exceed 30 years, especially as Egypt’s reserves or surplus electricity production will increase significantly after the commercial operation of all Siemens plants in Beni Suef, Brulus, and the New Administrative Capital.

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Desalination plant opens at Gwadar port (961 m³/d)- Pakistan

Federal Minister for Ports and Shipping Mir Hasil Khan Bizenjo inaugurated a desalination plant on Monday installed at the Gwadar port by China Overseas Port Holding Company for supplying drinking water to the people in the port city. The desalination plant has a production capacity of 961 m³/d of clean drinking water.Speaking at the opening ceremony, Senator Bezenjo, who is also president of the National Party, said that the New Year will witness massive development in Gwadar under the China-Pakistan Economic Corridor (CPEC).  He said that the desalination plant would reduce the shortage of drinking water in the port city to some extent. He said that the people of Gwadar had been facing water shortage for the past many months and they would now get clean drinking water through tankers. “The desalination plant is a true reflection of CPEC and friendship between Pakistan and China. It is a gift for the people of Gwadar,” Mir Hasil Khan Bezenjo said. The desalination plant is the result of the visionary thinking of Chairman of the Gwadar Port Authority Mir Dostain Khan Jamaldani and the Chairman of China Overseas Port Holding Company. He expressed the hope that the water crisis of Gwadar will be resolved this year and more such plants were in the pipeline. He said that the water supply from the Gwadar port would be cheaper than the water provided from the Mirani Dam in Turbat. The minister later inspected the plant, where Chinese officials briefed him about the plant’s capacity. Earlier, he was received at the airport by officials of the port authority and local administration.

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