污水生物处理新技术--SBR工艺

随着污水生物处理要求的不断提高,研究其中的新工艺SBR工艺凸显出重要意义。文章首先对SBR工艺做了概述,分析了SBR法的主要设备及仪器。在探讨SBR工艺运行中重点控制环节的基础上,研究了该项工艺运行核心问题。     

SBR工艺的发展与应用

介绍了SBR法的工艺流程和工艺特点，并将其与传统的水处理工艺作了对比，探讨了以SBR为主的各种新型工艺法，分析了SBR的应用状况，以发挥SBR工艺在城市化进程中的作用。     

浮筒式滗水器在SBR工艺中的工作原理及设计

对SBR工艺进行了介绍,归纳了SBR工艺的优点,阐述了各种滗水器的原理及特点,着重分析了浮筒武滗水器的结构、工作原理及设计要点,以推广浮筒式滗水器在SBR工艺中的应用,促进污水处理技术的发展。     

模糊控制技术在SBR工艺中的应用与发展

针对SBR污水处理工艺,提出用模糊控制方法实现SBR污水处理的自动控制方法,并详细介绍了模糊控制系统的结构和原理,分析了SBR工艺模糊控制技术的发展方向,以推广该技术的广泛应用。     

腐殖土SBR工艺处理生活污水的试验研究

考察了添加腐殖土的SBR工艺处理生活污水的效果,并与传统SBR反应器进行对比.结果表明,腐殖土SBR工艺对有机物、NH4+-N和TP的去除率分别为85%、83%和72%,与传统SBR工艺相比,提高了对有机物的降解速率,且添加腐殖土有助于SND现象的发生,从而提高了对氮的去除率.腐殖土的添加缩短了SBR系统的有机物氧化和氨氮硝化的时间,对于提高处理效率和降低运行费用具有重要意义.     

工艺模拟技术用于SBR优化设计

在介绍了SBR工艺模拟技术的基础上,通过实例说明应用模拟技术进行SBR工艺设计的方法并给出了模拟结果。结果表明,模拟技术是对采用传统方法设计的污水处理SBR工艺进行评价和优化的有效工具。     

前置反硝化SBR工艺的设计

介绍了前置反硝化SBR与连续流前置反硝化工艺相比在脱氮方面的优势。详细介绍了前置反硝化SBR工艺的设计方法——简化模型法,该法以活性污泥法动力学模型ASM1、ASM2和ASM3为理论基础,精简了动力学模型的参数数量,对SBR系统的碳源和NO3--N进行了核算,可以保证SBR最大限度地利用进水中的碳源进行高效脱氮。针对三种C/N值不同的废水,给出了前置反硝化SBR工艺具体的设计实例,并对设计结果进行了分析。     

高浓度氨氮对SBR工艺处理制药废水的影响

结合实际工程,考察了高进水氨氮浓度对SBR工艺处理制药废水的影响.结果表明,当SBR进水氨氮浓度>350 mg/L后,出水氨氮浓度迅速升高,出水COD浓度也呈波动上升,高浓度氨氮对微生物产生了抑制作用,大幅降低了SBR对氨氮与COD的去除率;经过一段时间的驯化,SBR工艺可适应450 mg/L左右的进水氨氮.     

机场生活污水处理厂脱氮除磷工艺的应用

本文探讨了利用BICT工艺设备,进行了具有污泥转移的SBR工艺(强化SBR)处理低浓度废水的研究,脱氮除磷工艺在机场生活污水处理厂中的应用.     

SBR母料的研制及应用

SBR作为沥青改性剂,较难与沥青直接混溶,对设备要求高、工艺复杂.作者将SBR制成SBR母料,解决了上述难题.本文介绍SBR母料制备工艺流程及其对改性沥青性能的影响,并进行了社会经济效益分析.     

基于信号解释Petri网的污水处理系统研究

污水生化处理过程机理复杂,具有强耦合性、非线性、时变性等特征,建模控制过程比较复杂.针对SBR处理工艺过程,提出采用信号解释Petri对SBR污水处理进行建模与控制,对系统活性、可逆性、终止性、决定性和输入依赖性进行验证,并对设计后系统的模型进行评价.分析结果表明,采用信号解释Petri对SBR污水处理进行建模与控制形式正确、有效.最后提出用PLC实现污水处理系统的设计、分析、仿真和代码产生.     

PLC控制ASBR/SBR工艺处理屠宰废水

采用ASBR/SBR工艺处理屠宰废水,并设计了PLC自动控制系统。介绍了PLC控制系统的结构(软、硬件构成)、主要的控制工艺流程及功能。     

垃圾渗滤液处理厂的DH+网络系统

基于DH 网络技术,结合垃圾渗滤液处理厂的工艺流程特点和PLC控制技术,介绍了DH 网络技术在垃圾渗滤液处理厂自动控制系统中的应用,并着重对SBR工艺的自动控制进行了阐述.指出DH 网的合理配置可优化自动控制系统结构、降低成本.     

肉食加工废水的DAF—SBR法处理

针对肉食加工废水，在生化处理特别是在ＳＢＲ处理工艺中存在的许多问题，采用物化－生化相结合的ＤＡＦ－ＳＢＲ处理工艺进行处理。结果表明，该方法不仅解决了存在的问题，而且取得了较好的处理效果。     

以DO、ORP、pH控制SBR法的脱氮过程

为实现SBR法脱氮在线模糊控制,以啤酒废水为研究对象,通过不同进水混合液氨氮浓度的试验,详细地研究了SBR法在去除有机物和硝化、反砂化过程中DO、ORP、pH的变化规律。试验表明,DO、ORP、pH的特征点和平台的重现性很好,可以作为SBR法去除有机物、砂化、反硝化的过程控制参数。     

SBR出水BOD值的RBF软测量法

提出了基于径向基函数(RBF)人工神经网络的SBR出水BOD值的软测量方法，并介绍了其原理。通过大量实测数据对RBF神经网络进行训练，仿真结果显示利用其可实现对SBR出水BOD值的软测量，为污水处理过程的在线实时控制创造了条件。     

Biological nitrogen removal with enhanced phosphate uptake in a sequencing batch reactor using single sludge system

Simultaneous biological phosphorus and nitrogen removal with enhanced anoxic phosphate uptake was investigated in an anaerobic-aerobic-anoxic-aerobic sequencing batch reactor ((AO)2 SBR). Significant amounts of phosphorus-accumulation organisms (PAOs) capable of denitrification could be accumulated in a single sludge system coexisting with nitrifiers. The ratio of the anoxic phosphate uptake to the aerobic phosphate uptake capacity was increased from 11% to 64% by introducing an anoxic phase in an anaerobic aerobic SBR. The (AO)2 SBR system showed stable phosphorus and nitrogen removal performance. Average removal efficiencies of TOC, total nitrogen, and phosphorus were 92%, 88%, and 100%, respectively. It was found that nitrite (up to 10 mg NO2(-)-N/l) was not detrimental to the anoxic phosphate uptake and could serve as an electron acceptor like nitrate. In fact, the phosphate uptake rate was even faster in the presence of nitrite as an electron acceptor compared to the presence of nitrate. It was found that on-line sensor values of pH, ORP, and DO were somehow related with the dynamic behaviours of nutrient concentrations (NH4+, NO3-, and PO4(3-)) in the SBR. These on-line sensor values were used as real-time control parameters to adjust the duration of each operational phase in the (AO)2 SBR. The real-time controlled SBR exhibited better performance in the removal of phosphorus and nitrogen than the SBR with fixed-time operation.     

Effects of hydraulic retention time and proteins on sludge toxicity for 4‐chlorophenol wastewater treatment in sequencing batch reactors

Due to the higher uncertainty of environmental risk for pollutants’ treatment by activated sludge, 10 mg/L influent 4‐chlorophenol (4‐CP) treated via a sequencing batch reactor (SBR) was used as acclimated SBR. Another SBR was used as control SBR without 4‐CP. The effects of hydraulic retention time (HRT) and proteins on sludge toxicity for 4‐CP treatment were analysed, and compared to the control SBR. Results showed that the sludge toxicity in acclimated SBR was significantly higher than that of the control SBR. Shortening HRT from 12 to 8 hours was beneficial to degrade 4‐CP and lower sludge toxicity. The identified highly expressed protein of ABC transporter co‐existed in control and acclimated SBRs, while other proteins of TonB‐dependent receptor, heat shock 70 kDa protein and superoxide dismutase in acclimated sludge were overexpressed relative to the control sludge, which played an important function in degrading 4‐CP, resisting 4‐CP toxicity and eliminating sludge toxicity.