Municipal road sewage treatment method and treatment system thereof

The invention relates to the technical field of sewage treatment, and in particular, relates to a municipal road sewage treatment method and a treatment system thereof. The municipal road sewage treatment method includes the steps: step 1, impurity precipitation; step 2, anaerobic decomposition; step 3, UV photocatalytic decomposition; step 4, re-precipitation; and step 5, suspended solid filtration; anaerobic decomposition is performed before UV photocatalysis, and decomposed sludge is precipitated, so the visibility of road sewage is high when the UV photocatalytic decomposition step is performed, high depth can be arranged and the photocatalytic effect can be guaranteed. At the same time, because an organic matter in road sewage is partially decomposed, the required decomposition effectcan be achieved in a short photocatalytic decomposition time. 本发明涉及污水处理的技术领域，尤其是涉及种市政道路污水处理方法及其处理系统。种市政道路污水处理方法，包括：步骤、沉淀杂质步骤二、厌氧分解步骤三、UV光催化分解步骤四、再次沉淀步骤五、过滤固体悬浮物在UV光催化之前先通过厌氧分解，分解出来的淤泥沉淀，因此在进入到UV光催化分解步骤时，道路污水的能见度已经比较高，因此可以设置较