Water. desalination + reuse

PROJECTS Brine treatment unit consists of a oxidation unit after the Fenton-method (Fenton tank), a BAF and an activated carbon (AC) filter. Brine produced in the RO system first flows into the Fenton tank, oxidizing agent (H2O2 and FeSO4 in acid condition) is added to remove some COD and improve the biodegradability of brine. In the horizontal sedimentation tank, water mixes with flocculate agent to help liquid-solid separation. After Fenton tank, brine flows into the BAF to remove COD and other pollutants in the water. The BAF uses blowers to supply oxygen, and there are gas backwash and clean water backwash systems. Outflow from the BAF is pumped to the AC filter to further remove pollutants in the water by using the adsorptive property of activated carbon. Finally, the effluent is discharged after meeting the design discharge standard. The construction site of Sichuan Shengda in Oct.2013 The construction site of Sichuan Shengda in Oct.2013 Sludge treatment unit mainly includes a sludge collection tank and a belt sludge dewatering machine. Excess sludge is pumped into the sludge collection tank for mixing, then sent to the belt sludge dewatering machine by sludge feed pump. After dewatering, sludge will be transported out for further drying and incineration disposal. Odor treatment unit collects odor produced in the equalization tank, emergency tank, biochemical tank and dosing room, dewatering room and sends it to a biological deodorization device. After deodorization treatment, the gas can meet the design discharge standard and upper-air emission. About BCH and Metito Berlinwasser China Holdings Ltd (BCH) is known as a professional investor and operator in the China water and wastewater market. When jointly established by Berlinwasser International AG (BWI) and Metito Group in 2008, BCH took over the concession business being operated by BWI since 1997 and aimed at further expanding its business in municipal water and wastewater treatment sectors in China. In 2011, Metito acquired the remaining shares of BCH from BWI and decided to expand BCH's business to include the industrial wastewater treatment and desalination sectors. Currently the total capacity of municipal wastewater treatment plants operated by BCH reaches 1,250,000 m3/d. BCH complements Metito's portfolio of worldwide locally based subsidiaries and projects, which have been developed by the group over fifty years of operational experience. The group provides customized, comprehensive and advanced solutions across the full spectrum of its industry, from clean to dirty water, covering three business areas: design and build, specialty chemicals, and utilities. Metito is currently at the forefront of the water and waste water industry with a global project portfolio in excess of US$ 1 billion and over 2,500 employees across its worldwide operations November-December 2013 | Desalination & Water Reuse | 25 |

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