（1）可实现污泥的颗粒化。（2）生物固体的停留时间可长达100天。因此

(1) The granulation of sludge can be realized. <BR>(2) The residence time of biosolids can be as long as 100 days. Therefore, UASB produces very little excess sludge, and the sludge is stable, easy to handle and dispose of, thereby greatly reducing expenses. <BR>(3) The separation of gas, liquid, and solid has been integrated. While water is being processed, most of the sludge volume reduction treatment has also been completed, which integrates sewage and sludge treatment and simplifies the traditional treatment process. <BR>(4) Blocking is not easy to occur under normal circumstances. Based on the above reasons, this design selects UASB as the anaerobic process.

(1) The granulation of sludge can be achieved.<BR>(2) Biosalds can stay for up to 100 days. As a result, UASB produces very little residual sludge, which is stable and easy to handle and dispose of, resulting in a significant reduction in expenses.<BR>(3) Gas, liquid, solid separation to achieve integration, in the treatment of water at the same time, but also completed the majority of sludge reduction treatment, so that sewage, sludge treatment integration, simplify the traditional treatment process.<BR>(4) It is usually not easy to clog. Based on the above reasons, the design selects UASB as an anaerobic process.

(1) It can realize the granulation of sludge.<BR>(2) The residence time of biosolids can be up to 100 days. Therefore, the excess sludge produced by UASB is very small, and the sludge is stable and easy to treat and dispose, which greatly reduces the cost.<BR>(3) The separation of gas, liquid and solid realizes the integration. While treating water, it also completes the volume reduction treatment of most sludge, which makes the sewage and sludge treatment integrated and simplifies the traditional treatment process.<BR>(4) In general, it is not easy to block. Based on the above reasons, UASB is selected as anaerobic process in this design.<BR>