宁波南区污水处理厂二期工程总平面优化设计

宁波南区污水处理厂规模为40万m3/d,一期工程16万m3/d已建成。现进行二期工程,建设规模为8万m3/d,但业主提出了需满足环保局防护距离和规划局退界的要求;同时在有限的用地内还要预留三、四期的污水处理和再生水回用处理用地、出水水质升级处理用地、污泥处置用地。为此,介绍了二期工程总平面设计原则和7个功能区的具体设计方案。最后介绍了总体布局和进水及预处理区、升级排放、再生水回用处理等优化设计,并包括先进的工艺、工程设备等的选用。

On General Layout Optimized Design of Phase II Project of South Area Sewage Treatment Works in Ningbo

The total scale of South Area Sewage Treatment Works in Ningbo is arriving at 400 000 m3/d,of which 160 000 m3/d of Phase Ⅰ has been already built. Then,the scale of Phase Ⅱ is determined of 80 000 m3/d originally,but the owner has made demands for protective distance by Environment Protection Bureau and setback line by Planning Bureau. Meanwhile,the fields of Phase Ⅲ and Phase IV,recycled water usage treatment site,outflow quality updating treatment site and sludge treatment site should be reserved in the limited land. For this purpose,the design principle of Phase Ⅱ general layout and detailed design plans of seven functional areas are introduced. Finally,several key points are put forward including general layout,inflow & pre-treatment site,upgrading & discharging,recycled water usage treatment,advanced technology and project equipment,etc.