In the final analysis, SBR process was adopted in this treatment plant design. This new kind of process has such advantages as follows:its constructions are very simple, save a secondary sedimentation tank and sludge digestion and backflow system. So the cost of its infrastructure is relatively lower than other treatment processes; Its effect of removing the TN and TP is very remarkable and the quality of its effluent is also very good; The requirement of automation in operation and management is high, so the overall cost of operation is relatively low. Its continuous effluent and intermittent outflow in the operation is very applicable to the medium-sized and small-sized sewage treatment plant.
根据处理水量以及进出水的水质状况，对多种污水处理工艺进行综合的经济技术分析，最终确定选用比较新型的SBR工艺，该工艺主要优点在于污水处理构筑物较少，省去了二次沉淀池和污泥消化回流系统，基建费用相对较低；脱氮除磷效果明显，处理出水水质优良；水厂的自动化运行管理水平要求高，综合运行成本较低；连续进水间歇排水的运行方式非常适用于中小型污水处理厂。
The by-product sulfur was hydrophilic, and better than hydrophobic sublimed sulfur, or the by-product sulfur from hydrogen sulfide removal by acid solution of Fe2 (SO4) 3.The settling velocity of sulfur particles was 0.125 × 10-2 m · s-1 as shown in an intermittent sedimentation test.
该副产物硫磺具有亲水性，在工业应用上优于具有疏水性的升华硫和酸性Fe2（SO4）3溶液脱H2S产生的硫；该副产物硫颗粒在溶液中的沉降速度为0.125×10-2m。
Improving Hydraulic Surface Loading of Secondary Sedimentation Tank by Intermittent Sedimentation Process
间歇运行提高二沉池负荷能力