摘要:影响印染废水活性污泥法处理效率最主要的因素是污泥活性，而传统污泥

Abstract: The most important factor affecting the efficiency of activated sludge treatment of printing and dyeing wastewater is sludge activity. The traditional sludge detection index detection process is cumbersome and has a lag. Therefore, this topic adopts a new type of sludge detection method, the light deflection method. Conduct experimental research. In this study, polyvinyl alcohol (PVA) gel beads were used to enrich the microorganisms in activated sludge, which was used as an auxiliary tool to detect the light deflection caused by the metabolism of microorganisms in the sludge, and the PVA gel was measured by a light spot analyzer. The light deflection distance of the pellets characterizes the sludge activity. Preliminary experiments on light deflection of soluble organic matter, plants and activated sludge are carried out to verify their feasibility, and then applied to the batch activated sludge process (sequencing batch reactor activated sludge process, referred to as SBR) and fully mixed and exposed activated sludge. In the mud method, a single factor experiment was carried out, and three-dimensional fluorescence spectroscopy and scanning electron microscope detection and analysis were assisted. The results found that the concentration gradient generated by organic matter and biological metabolism in the preliminary experiment can bow | luminescence deflection, and it is also suitable for activated sludge. In the SBR activated sludge method and the fully mixed aeration activated sludge method, by controlling the single factors of SV30, MLSS, aeration amount, aeration time, influent COD, pH, and heavy metal concentration, it is found that CODcr removal rate and PVA The light deflection of the gel beads presents a certain corresponding relationship, indicating that the light rotation can reflect the changes in sludge activity caused by these factors to a certain extent. However, data fluctuates in the time deflection value of additional drugs such as changing pH, heavy metal concentration, etc. Three-dimensional fluorescence spectroscopy found that the organic matter involved in the metabolism of microorganisms in activated sludge included tyrosine, aromatic proteins, and tryptophan. Scanning electron microscopy found that a large number of microorganisms and mainly bacteria were attached to the surface and inside of the PVA gel beads. Using PVA gel beads as an auxiliary tool to measure the optical rotation can objectively reflect the growth and metabolism of microorganisms in the activated sludge system. . In summary, the light deflection method can reflect the metabolic state of microorganisms in the activated sludge of printing and dyeing wastewater to a certain extent, so the light deflection method can characterize the activity of sludge to a certain extent.

Abstract: The most important factor affecting the treatment efficiency of the activated sludge method of printing and dyeing wastewater is sludge activity, while the detection process of traditional sludge detection index is cumbersome and lags behind, so a new sludge detection method is used in this topic, light deflection method is used for experimental research. In this study, microorganisms in polyvinyl alcohol (PVA) gel ball-rich activated sludge were used as an auxiliary tool to detect microbial metabolism in sludge, and spot analyzers were used to measure the light deflection distance of PVA gel balls to measure the activity of sludge. The feasibility of optical deflegment pre-experiment on soluble organic matter, plants and activated sludge was carried out, and the single-factor experiment was carried out in intermittent activated sludge method (sequencing batch reactor activated sludge) and fully mixed exposure test activated sludge method, and three-dimensional fluorescence spectroscopy and scanning electron microscope detection and analysis were assisted. The results showed that the concentration gradient energy bow and luminescence defle | produced by organic and biological metabolism were also applied to activated sludge. In the SBR activated sludge method and the fully mixed aeration active sludge method, by controlling SV30, MLSS, aeration, aeration time, water COD, pH, heavy metal concentration of these single factors, it is found that the CODcr removal rate and the light deflegation of PVA gel ball show a certain correspondence, indicating that the photoderns can reflect the change of sludge activity of these factors| to a certain extent. However, data fluctuations occur when changing pH, heavy metal concentrations, etc., plus drug time defleter values. Three-dimensional fluorescence spectral analysis found that the organic matter metabolized by microorganisms in the active sludge included tyrosine, aromatic protein and tryptophan. The scanning electromirror found that the surface and interior of the PVA gel ball are attached to a large number of microorganisms and are mainly bacteria, and the PVA gel ball is used as an auxiliary tool to measure the photocoil, which can objectively reflect the metabolic state of microbial growth in the active sludge system. To sum up, the light deflection method can reflect the metabolic state of microorganisms in the activated sludge of printing and dyeing wastewater to a certain extent, so the light deflection method can express sludge activity to a certain extent.

Abstract: the most important factor affecting the treatment efficiency of printing and dyeing wastewater by activated sludge method is sludge activity, while the traditional sludge detection process is cumbersome and lagging, so a new sludge detection method, light deflection method, is used in this paper. In this study, polyvinyl alcohol (PVA) gel beads were used to enrich the microorganisms in the activated sludge. They were used as an auxiliary tool to detect the luminescent deflection of microorganisms in the sludge. The light deflection distance of PVA gel beads was used to characterize the sludge activity. The feasibility of this method was verified by light deflection pre experiment on soluble organic matter, plant and activated sludge. Then, it was applied to sequencing batch reactor activated sludge process (SBR) and fully mixed aeration activated sludge process to carry out single factor experiment, and assisted by three-dimensional fluorescence spectroscopy and scanning electron microscopy. The results showed that the concentration gradient produced by organic matter and biological metabolism in the pre experiment could deflect the luminescence, which was also suitable for activated sludge. In the SBR activated sludge process and the completely mixed aeration activated sludge process, by controlling the single factors such as SV30, MLSS, aeration volume, aeration time, influent COD, pH and heavy metal concentration, it was found that the CODcr removal rate corresponded to the light deflection of PVA gel beads. However, the data fluctuated when pH and heavy metal concentration were changed. Three dimensional fluorescence spectrum analysis showed that tyrosine, aromatic protein and tryptophan were involved in microbial metabolism in activated sludge. Scanning electron microscopy revealed that a large number of microorganisms and bacteria were attached to the surface and interior of PVA gel beads. PVA gel beads were used as auxiliary tools to measure the growth of microorganisms, which could objectively reflect the growth and metabolism of microorganisms in activated sludge system. In conclusion, the light deflection method can reflect the metabolic state of microorganisms in the activated sludge of printing and dyeing wastewater to a certain extent, so the light deflection method can characterize the sludge activity to a certain extent.<br>