污泥厌氧消化系统中PAC的迁移转化及其对消化污泥脱水的影响

聚合氯化铝（PAC）在各领域的广泛应用将不可避免进入污水并被累积到污泥中。然而，PAC在污泥厌氧消化系统中的迁移转化及其对消化后污泥脱水的影响并未得到系统解析。因此，本项目拟结合环境微生物、环境化学、生物化学等多个交叉学科的理论方法，采用ICP、27Al-NMR、DSC、HPLC/MS等手段对PAC与污泥消化过程间的相互作用进行基础科学研究，解析PAC在污泥厌氧消化系统“固相”和“液相”中浓度和形态的动态变化，研究PAC在厌氧系统中的动态变化对消化污泥脱水的影响，通过探寻此过程中消化污泥理化特性、微生物学特征、EPS分布与组成等的改变，揭示PAC的迁移转化与消化污泥脱水性能间的偶联规律。项目旨在揭示PAC进入污泥厌氧消化系统后迁移转化规律及其对污泥脱水的作用机制，并为消化污泥脱水提供理论支持和技术指导。

Poly aluminium chloride (PAC) is widely used in various fields and will inevitably enter the sewage then be accumulated in the sludge. However, the transportation and transformation of PAC in sludge anaerobic digestion system and its effect on sludge dewatering after digestion have not been systematically analyzed. Therefore, the project intends to combine environmental microbiology, environmental chemistry, biochemistry, and other interdisciplinary theory method, using ICP, 27Al-NMR, DSC, and HPLC/MS detect the interaction between PAC and sludge digestion process on the basis of scientific research, parsing the dynamic changes of PAC in sludge anaerobic digestion system in the "solid" and "liquid" from the aspect of concentration and formation, studying the effects of these changes on the dewatering of digested sludge, by exploring the changed of physical and chemical properties of digested sludge, microbiology in digested system and EPS distribution and composition, reveals the interactions between PAC migration and digested sludge dewaterability. The purpose of this project is to reveal the rule of PAC transportation and transformation after it entered the sludge anaerobic digestion system and its mechanism for sludge dewatering, and to provide theoretical support and technical guidance for the dewatering of digested sludge.