Background

Qingdao High-tech Zone Underground WTP, with the total scale of 180,000 m3/d, is constructed in two phases. In the first phase, 180,000 m3/d civil works and 90,000 m3/d equipment were installed, and the water was designed to meet the I-A standard.

Implementation Idea

The biological tank adopts the improved A2/O+MBBR composite process to reduce investment and maintenance costs.

Highlight

A typical case of MBBR process for a full underground sewage plant; High load, land saving, reduce investment and maintenance cost.