Wastewater treatment system of Dong Van II Industrial Zone, phase II, capacity of 2000 m3 / day and night, belonging to Dong Van II Industrial Park, Duy Tien District, Ha Nam Province, by Ecoba Technology Environment Co. Ltd. design and construction. The project is completed and put into operation in August 2018 with the quality of wastewater after reaching QCVN on industrial wastewater No. 40: 2011 / BTNMT-column A, meeting the demand of wastewater treatment for the period. paragraph 2, Dong Van Industrial Park II