首页|ASM1分析市政污水厂进水COD组分的工艺优化实例

ASM1分析市政污水厂进水COD组分的工艺优化实例

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为进一步提高市政污水处理厂运营管理水平,对污水处理厂中进水 COD 在污水处理系统中的组分变化进行系统考察.试验基于ASM1 理论对市政污水厂的进水COD组分分类,对长期投加碳源的某污水厂进水数据进行收集,并测定其14 组数据中CODtot、CODsol、CODss、CODsI的含量.同时,通过测定污水处理生化系统中厌氧池、缺氧池Ⅰ、好氧池Ⅰ、缺氧池Ⅱ、好氧池Ⅱ中沿程CODsol、氨氮、硝态氮、溶解氧和总氮含量变化进一步研究污水处理生化系统的效能.试验表明,进水 CODtot、CODsol、CODss、CODsI平均值分别为158、54、25、29.4 mg/L,CODsol去除率沿生化池水流方向逐渐降低.此外,由于缺氧池多点进水的工艺构造,分配的进水给缺氧池Ⅱ提供了碳源,促进了总氮的去除;但同时带入一部分含氮污染物,造成该池内氨氮升高.从污染物去除效果及节约成本方面考虑,可以得出:(1)进水 COD 中惰性物质所占比例较大,去除总氮所需的碳源不足,需长期投加外部碳源.(2)合理利用工艺多点进水的特点,为缺氧池Ⅱ提供碳源,减少外部碳源的投加.(3)好氧池Ⅰ过高的溶解氧会破坏缺氧池Ⅱ缺氧环境,要合理控制好氧池Ⅰ的曝气量,避免能耗浪费.
Process Optimization Example for ASM1 Analyzes COD Composition in Influent Water from Municipal Wastewater Plants
In order to further improve the operation and management level of the sewage treatment plant.The component changes of the influent COD in the sewage treatment plant were systematically investigated.Based on the ASM1 theory,the influent COD components of municipal sewage plants were classified.The influent data of a sewage treatment plant with long-term dosing carbon source were collected,and the contents of CODtot,CODsol,CODss and CODsI in 14 sets of data were determined.At the same time,the efficiency of the wastewater treatment biochemical system was further studied by measuring the changes of anaerobic pond,anoxic pond I,aerobic pond I,anoxic pond Ⅱ,aerobic pond Ⅱ,aerobic pond II.In the middle of the wastewater treatment biochemical system.The results showed that the average values of CODtot,CODsol,CODss and CODsI in the influent were 158,54,25,and 29.4 mg·L-1,respectively.The removal rate of CODsol gradually decreased along the direction of the biochemical segments.In addition,due to the process structure of multi-point inlet water in the anoxic pond,the allocated inlet water provided a carbon source to the anoxic pond II,which promoted the removal of total nitrogen.However,some nitrogen-containing pollutants were introduced,resulting in an increase in ammonia nitrogen in the pool.From the perspective of pollutant removal effect and cost saving,it can be concluded that:(1)The proportion of inert substances in the influent COD is large,and the carbon source required for the removal of total nitrogen is insufficient,and an external carbon source needs to be added for a long time.(2)Rational use of the characteristics of multi-point inlet water in the process to provide carbon sources for anoxic ponds II.and reduce the addition of external carbon sources.(3)Aerobic pond I.Excessive dissolved oxygen will destroy the anoxic pond II.Hypoxic environment,the aeration volume of aerobic pond I.should be reasonably controlled to avoid waste of energy consumption.

ASM1COD component analysissolubility CODcontaminants changeprocess optimization

万丽、赵浩

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马鞍山中铁水务有限公司,安徽 马鞍山 243000

中铁水务集团有限公司,陕西 西安 710000

ASM1 COD组分分析 溶解性COD 污染物沿程变化 工艺优化

2024

广东化工
广东省石油化工研究院

广东化工

影响因子:0.288
ISSN:1007-1865
年,卷(期):2024.51(5)
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