Concentrate Disposal


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Florida city breaks ground on brackish RO project

The Florida city of Tarpon Springs broke ground on 25 March 2013 on a 5 MGD (19,000 m³/d) reverse-osmosis Alternative Water Supply Project.

STW Water bags Horizon, Texas US$ 2.2 million brine concentrator deal

STW Water has won the US$ 2.2 million contract to design, engineer and construct a reverse osmosis concentrator for the Municipal Utility District of Horizon City, Texas.

Nine desalination studies bag US$ 1.4 million funding

Nine research projects and pilot studies will share US$1.4 million in funding under a desalination and water purification research programme set up by the US Bureau of Reclamation.

Desalitech and Veolia tie up Mexican MoU

Desalitech Inc has signed a memorandum of understanding (MoU) with Veolia Water Solutions & Technologies to bring advanced cost‑effective high‑recovery water solutions to Mexico and additional countries worldwide.

Biwater lands Chino desalination concentrate reduction

A concentrate-reduction facility is to be built for the Chino Basin Desalter Authority in California by Biwater AEWT, involving installation of three new reverse-osmosis (RO) desalination units.

Is evaporation the answer to inland concentrate disposal?

Increasing brackish water supplies and widening the reuse of wastewater by the use of membranes in the southwestern United States is running up against the limitation of concentrate disposal costs for inland sites. This article explores concentrate management and summarizes the current progress of ongoing research. This article first appeared in the May/June 2013 issue of Desalination & Water Reuse magazine.

Santa Cruz desalination EIR comment deadline in July

The draft environmental impact report (EIR) for the 2.5 MGD (9,500 m³/d) seawater desalination plant for the greater Santa Cruz area in California, USA, which was released on 13 May 2013, will be available for public comment until 15 July 2013.

June start for Clearwater RO plant in Florida

Construction is due to start in June 2013 on the second reverse-osmosis water treatment plant for City of Clearwater, Florida, following a groundbreaking ceremony on 6 May 2013.

IDA picks São Paulo as 2017 World Congress venue

The International Desalination Association (IDA) has selected São Paulo, Brazil as the venue for its 2017 World Congress on Desalination and Water Reuse. The event will take place in the second half of 2017. Specific dates and details about the venue are being finalized.

ACWA supports California desalination regulation rethink

The Association of California Water Agencies (ACWA) has proposed to the State Water Resources Control Board (SWRCB) that the board's new environmental document for desalination and brine disposal should propose a method to combine the current regulatory requirements, permits and approvals.

MF/RO plant may be Santa Clarita salt solution

A microfiltration/reverse-osmosis (MF/RO) advanced wastewater treatment plant is one of several options being considered by the Santa Clarita Valley Sanitation District (SCVSD) in California, USA, to deal with excessive chloride levels in the wastewater it discharges to the Santa Clara River from its two treatment plants.

Australian workshop on desalination intakes and discharges

An international workshop on intakes and discharges for seawater desalination is to be held by the National Centre of Excellence in Desalination Australia is in Adelaide on 16-17 May 2012.

HPD brine concentrator

HPD wins Australian brine-concentrator contract

HPD, a subsidiary of Veolia Water Solutions & Technologies, has been selected to provide its brine concentrator technology for a uranium mine in Australia's Northern Territory.

PWT to be represented by Omya in EMEA region

Professional Water Technologies announced on 6 September 2011 that it had signed a sales representative agreement with Omya International AG, a leading global producer of industrial minerals, and a worldwide distributor of chemical products.

Brochure online for SEDA Fall Symposium

The Southeast Desalting Association (SEDA) now has the brochure online for its Fall Symposium, titled Membranes: That's Where Water is Headed, on 23- 25 November 2011 in Clearwater, Florida.

Marin MWD wins but desalination EIR challenge looms

Marin Municipal Water District (MMWD) won a ruling in March 2011 by a Marin superior court judge which keeps its option of a seawater desalination plant on track.

Escondido moves towards indirect potable reuse

The City of Escondido in southern California, USA, could be about to follow neighbour San Diego in setting up an indirect potable water-reuse (IPR) scheme as part of a wastewater facility upgrade costing about US$ 200 million.

Tarpon Springs RO plant moves forward

Florida's Department of Environmental Protection (FDEP) granted the City of Tarpon Springs a permit on 28 January 2011 to build a US$ 45 million reverse-osmosis (RO) water treatment facility.

Chino desalters get first general manager

Curtis Paxton, currently assistant general manager and chief operating officer of the Palmdale Water District, is to become the first general manager of the Chino Basin Desalter Authority (CBDA) in California from 24 January 2011.

SAWS brackish desalination test plant.

Further funding for San Antonio BWRO desalination project

Initial project construction for the brackish groundwater desalination program planned by San Antonio Water System (SAWS) in the USA will now be possible following a US$ 24.6 million loan from the Texas Water Development Board (TWDB).

Aquatech wins Mongolian ZLD job

Aquatech has been awarded a contract for a 2,400 m³/d zero liquid discharge (ZLD) plant for a coal-to-chemicals facility in Hailer in Inner Mongolia.

Permit sought for RO discharge to Great Salt Lake

A proposal from the Jordan Valley Water Conservancy District (JCWCD) in Utah, USA, to discharge reject brine from a 7-14 MGD (26,000-53,000 m³/d) reverse-osmosis desalination (RO) plant into the Great Salt Lake is out for public comment from 1 December 2010 as part of the permit process.

Saltworks test rig with evaporation pond surrounded by windbreak.

Canadian low-energy desalination gets government boost

Saltworks Techologies Inc's low-energy desalination project is to receive up to Can$ 580,000 (US$ 577,000) from the Canadian government via Sustainable Development Technology Canada (SDTC).

West Basin demonstrating desalination intake and outfall technologies

One of the first seawater desalination demonstration facilities to employ ocean-protection technology at the source of intake and discharge has begun construction in Southern California, USA.

Desalination demonstration to tackle California's agricultural drainage

Desalination technology is to be used in California's Central Valley to convert high salinity agricultural drainage water into fresh water for irrigation and CO2-negative products derived from the waste salts.

IDA to form Gulf desalination environmental task force

The International Desalination Association (IDA) plans to form a task force to explore the environmental effects of desalination on the Arabian Gulf and recommend strategies to mitigate potential impacts.

Lawsuit filed against Marin County desalination proposal

A lawsuit to protect San Francisco Bay and the citizens of Marin County "from the harmful effects of desalination" was filed in the Marin Superior Court on 21 September 2009 by a number of opponents including an environmental group.

BHP Billiton asked to rethink desalination plant site

The Parliament of South Australia's Environment, Resources & Development Committee has recommended mining company BHP Billiton reconsider its proposed site for a 250,000 m³/d seawater desalination plant at Port Bonython in the upper Spencer Gulf.

TWO process to recover sodium sulphate from ion-exchange

California-based Catalyx Inc has signed a build-own-operate contract with RG Global Lifestyles Inc, which owns Catalyx Fluid Systems (CFS), for a brine dehydration system to facilitate recovery of sodium sulfate from ion-exchange regenerant brine.

Carlsbad seawater desalination project

State budget cuts delay Carlsbad desalination approval

Cuts to the California state budget prevented officials of the San Diego County Regional Water Quality Control Board preparing recommendations regarding the proposed Carlsbad desalination plant for the board to vote on at a meeting on 11 February 2009.

Brownsville pilot study published

Pilot study results from consultant NRS Consulting Engineers have confirmed that seawater desalination on the shore of the Ship Channel in Brownsville, Texas, USA, is technically feasible.

Desalination Concentrate Disposal: Salt Production For Zero-Discharge System

Since large-scale desalination started, the question of how to dispose of the reject material produced by the process has occupied the minds of engineers and economists. The quantity of brine discharged from desalination plants is increasing, and this trend will be maintained for the near future. The minerals extracted must have a value, but how can this best be realised? This summation of the current state-of-the-art in brine disposal is an update of a paper originally presented at the European Desalination Society's EuroMed conference in Jordan in November 2008. The methods outlined provide both the production of a byproduct and environmental protection by processing the outfall brine from desalination plants. The process is the first step towards the "zero discharge system", and therefore the method should be considered as a novel approach rather than a competitive one to the traditional thermal, chemical and membrane processes. This article appeared in D&WR magazine's February/March 2009 issue. *Corrado Sommeriva has recently moved to ILF Consulting Engineers.


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