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| 基于BioWin的某城镇污水处理厂工艺模拟与碳源投加优化 |
| BioWin-based process simulation and optimization of carbon source dosing in a municipal wastewater treatment plant |
| 投稿时间：2024-03-15 修订日期：2024-04-16 |
| DOI： |
| 中文关键词: 城镇污水处理 AAO工艺 BioWin 碳源 |
| 英文关键词: Municipal wastewater treatment AAO process BioWin Carbon sources |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）；沈阳市技术攻关“揭榜挂帅”项目 |
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| 中文摘要: |
| 城镇污水处理厂通常外加碳源提高生化处理效率。遗憾的是，国内大多数水厂仅根据经验手动投加碳源，为保证出水稳定达标，碳源常被过量投加。因此，对碳源的投加进行优化至关重要。仿真软件在这方面展现出优越性。本文借助BioWin软件对辽宁省某城镇污水处理厂进行工艺模拟，根据敏感度分析确定关键参数，通过稳态校正和动态模拟得到较高准确度的模型，以此探究碳源的最佳加药点，并比较不同季节甲醇投加量对污水脱氮效果的影响，得出：碳源的最佳投加点为缺氧池前端，秋、冬季脱氮效率低，需分别外加甲醇（纯度100%）至少9.63 L/千吨水和14.60 L/千吨水。本文建立的仿真模型可以准确地进行工艺模拟，有效保证出水达标并减少不必要的碳源投加，具有实践意义。 |
| 英文摘要: |
| Municipal wastewater treatment plants (WWTPs) usually add carbon sources to improve the efficiency of biochemical treatment. Unfortunately, most of the domestic water plants only add carbon sources manually according to their experience. To ensure that the effluent meets the discharge standard stably, carbon sources are usually added too much. Therefore, it is crucial to optimize the dosing of carbon sources. Simulation software shows its superiority in solving the problem. In this paper, a model of the process in a municipal WWTP in Liaoning Province was constructed with the BioWin software. The key parameters were determined based on the sensitivity analysis, and the model with higher accuracy was developed through steady-state correction and dynamic simulation. The optimal dosing position of carbon sources was explored through the simulation, and the nitrogen removal effects of methanol dosage in different seasons were studied. It is concluded that the optimal dosing position is in front of the anoxic tank, and the efficiency of denitrification in autumn and winter is low, where at least 9.63 L/thousand tons of water and 14.60 L/thousand tons of water of methanol (100% purity) was needed. The simulation model developed in this paper can accurately simulate the process, effectively ensuring that the effluent meets the standard and reducing unnecessary carbon input, which is of practical significance. |
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