* Deal done at equity value of 5.3 billion real
* Odebrecht also talked with Veolia, Suez, Acciona
* Brazil corruption scandal ends IPO, global expansion (Adds details on other potential bidders)
By Geert De Clercq
PARIS, Aug 17 (Reuters) - Canada's Brookfield Asset Management has signed a preliminary contract to buy Brazilian engineering conglomerate Grupo Odebrecht's 70 percent stake in water and sewage group Odebrecht Ambiental, an industry source told Reuters on Wednesday.
The source said the deal was done at an equity value of 5.3 billion real ($1.65 billion), which implies an earnings before interest, tax, depreciation and amortisation (EBITDA) multiple of 8.5. Odebrecht S.A. will cash out 3.4 billion real, he added.
Odebrecht Group will retain the right to develop water concession projects outside Brasil and Brookfield will re-brand Odebrecht Ambiental, which was named Foz until 2012.
The deal is expected to be completed by the end of the year.
Odebrecht, Latin America's largest engineering group, owns 70 percent of Odebrecht Ambiental, with Brazilian worker compensation and retirement fund FGTS owning the remaining 30 percent. It was not immediately clear whether FGTS would also sell its stake to Brookfield.
The source said that last winter Odebrecht Ambiental chief executive Fernando Santos-Reis had discussed the possibility of selling a stake in his firm with Antoine Frerot, CEO of French group Veolia, as well as with Jean-Louis Chaussade, CEO of smaller rival Suez.
There have also been discussions with Spain's Acciona, , with Beijing Water and some other companies in Europe and Asia, the source said. Initially, Odebrecht wanted to sell only half of its stake in Odebrecht Ambiental.
Established in 2008, Odebrecht Ambiental is market leader in Latin America, serving more than 18 million people and several large companies in the steel, petrochemical and pulp and paper industries.
Its Aquapolo project, which recycles Sao Paulo's sewage to produce water for a petrochemical complex is rated as the largest industrial water re-use project in the southern hemisphere.
One of the world's top 10 water firms, Odebrecht Ambiental does not have a global presence like Veolia and Suez and in 2014 the firm announced plans to list some of its shares in 2015 or 2016 to finance its global expansion.
But its parent company Grupo Odebrecht got caught up in a corruption probe at oil producer Petróleo Brasileiro SA and other state companies and the family member who ran Grupo Odebrecht was sent to prison.
The scandal has curtailed access to capital markets and loan funding for the group's 15 subsidiaries and the company is now selling assets to reduce debt. ($1 = 3.2025 Brazilian reais) (Reporting by Geert De Clercq; Editing by Adrian Croft, Greg Mahlich)