基于設(shè)計(jì)暴雨法的CSO調(diào)蓄池池容計(jì)算方法探討
- Title:
- Determination Method of CSO Calculation Volume of Storage Tank Based on Design Rainstorm Method
- 關(guān)鍵詞:
- font-size: 10pt; ">設(shè)計(jì)暴雨法; 合流制溢流; 調(diào)蓄池池容
- 摘要:
- 我國(guó)當(dāng)前采用經(jīng)驗(yàn)參數(shù)法計(jì)算合流制溢流（CSO）調(diào)蓄池池容，該方法存在參數(shù)取值合理性不足、CSO控制效果不清等問(wèn)題。基于暴雨強(qiáng)度公式和合理法，提出與溢流頻次控制標(biāo)準(zhǔn)相對(duì)應(yīng)的設(shè)計(jì)暴雨，并分別根據(jù)簡(jiǎn)化的三角形徑流過(guò)程線、由設(shè)計(jì)降雨過(guò)程線得到的徑流過(guò)程線，給出了CSO溢流口溢流量（調(diào)蓄池池容）和污水處理廠廠前溢流量計(jì)算方法。以北京為例，擬合得到CSO調(diào)蓄池池容與徑流截流比、歷時(shí)24 h設(shè)計(jì)降雨徑流量之間的關(guān)系曲線，可供北京城區(qū)使用。設(shè)計(jì)暴雨法可在一定程度上彌補(bǔ)我國(guó)當(dāng)前參數(shù)法的不足，為CSO調(diào)蓄池池容的合理設(shè)計(jì)提供參考。
- Abstract:
- Based on the storm intensity formula and reasonable method, the corresponding design rainstorm for overflow frequency control standards was proposed. According to the simplified triangular runoff line and the runoff line obtained from the design rainfall process line, the calculation methods of CSO overflow (storage tank capacity) and pre-plant overflow in WWTP were given respectively. Taking Beijing as an example, the relationship curve between the capacity and runoff diversion ratio of the CSO storage tank volume, as well as the designed rainfall runoff of 24 h was obtained by fitting, which can be used in Beijing urban area. The design rainstorm method can make up for the deficiency of the current empirical parameter method in China to some extent, and can provide reference for the reasonable design of CSO storage tank volume.
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