LONDON (Dow Jones)--Private equity company Origo Partners PLC (OPP.LN) Wednesday said portfolio company Aqualyng Holding A/S has inked a deal to build a desalination plant in China.

The deal is Aqualyng's first in China, Origo said.

The project, at the Caofeidian industrial development zone near Beijing, will be developed and operated by a joint venture company owned by Aqualyng and Tangshan Caofeidian Infrastructure Investment Co. Ltd. and will have an initial capacity to process 50,000 square meters of water a day.

The plant will be built and operated on a 30-year concession, Origo said. Construction will start in the first quarter of 2010.

Aqualyng is currently finalizing a $25 million fundraising to pay for this and other projects. Origo has committed $1.1 million of new investment in the funding round, it said.

Origo Partners PLC was formed by the recent merger of Origo Sino-India PLC and its separately-listed natural resources fund Origo Resource Partners Ltd.

Company Web site: www.origoplc.com

-By Jason Douglas, Dow Jones Newswires; 44-20-7842-9272; jason.douglas@dowjones.com