结团絮凝工艺处理水厂排泥水的中试研究

以水厂的铁盐排泥水为处理对象,采用结团絮凝工艺进行了规模为1.3-5.4m3/h的动态试验研究,优化了处理工艺的控制条件.试验结果表明,采用静态混合器进行混合反应的处理效果优于其他混合装置;当进水SS为103-1154mg/L时,适宜的PAC、PAM[分子质量为(1-1.2)x104ku)]投加量分别为(5.1-15.3)、(0.3-2.7)gm/L,最佳搅拌转速为10r/min,水流上升流速为30-80cm/min,在该试验条件下,沉淀池出水浊度<5NTU、污泥含水率<97%、污泥颗杜沉速>10mm/s.     

The Application of RUF Series Catalysts and Its Grading Optimization Technology

Qilu Petrochemical Company in order to synchronize the replacement of catalysts in the upflow reactor （UFR） and fixed-bed reactors and achieve the 1.5-year operating cycle of the residue hydrotreating unit has revamped the UFR and optimized catalysts grading. Commercial operation results have revealed that the series of catalysts for residue hydrotreating after optimized grading achieved an operating cycle of 1.5 years with the quality of hydrotreated oil products meeting the requirements for FCC feedstock.     

上向流直接供氧生物膜硝化动力学研究

对上向流直接供氧生物膜硝化动力学进行了试验和讨论。结果表明,在此试验条件下,硝化反应速度随着氯化氨浓度的增加呈现出从半级反应到零级反应的过渡,之后反应速度保持常数,并与氯化氨浓度的变化无关。本文还用不同厚度生物膜对硝化动力学的影响作了试验,发现随着生物膜厚度的减少,其零级硝化反应速度平台也呈现了逐级降低的趋势。本试验研究是在丹麦技术大学环境科学与工程系完成的。     

Identification of Flow Regimes in a Concurrent Gas Liquid Upflow through Packed Beds

The flow regimes bubble flow, pulse flow, and spray flow were identified by visual observation in a packed column. Three gas‐liquid systems (air/water, air/56 % glycerol, and air/monoethanolamine) and four column packings (Raschig rings, Intalox saddles, and two sizes of spheres) were investigated to cover wide ranges of physical properties of gas liquid systems and characteristics of column packings affecting the flow regime transition. Criteria for the flow regime transition were developed in terms of system and operating variables.     

内循环UASB反应器处理垃圾渗滤液的试验研究

采用内循环UASB对垃圾渗滤原液或稀释后的垃圾废水直接进行厌氧处理,进一步验证了内循环UASB反应器具有对COD(Cr)NH3-N、SS等适应范围广、易实现污泥颗粒化、污泥强度更高、污泥流失量少的特点.试验结果表明,当负荷发生变化时,系统能在短期内(8-15d)达到稳定的COD(Cr)去除率,最高达94.78%,一般5...     

上流式厌氧污泥床-滤层反应器处理精对苯二甲酸废水液体流态及基质降解动力学的研究

借助于Li~ 阶跃示踪实验建立了上流式厌氧污泥床-滤层(UBF)反应器的液体流态多参数模型.该模型将UBF反应器中的污泥床、污泥层、填料层描述为三个含有死区的、通过活塞流、返混流及短路流相连的全混流反应区,进而利用该模型和比基质降解Monod方程建立了UBF反应器基质降解动力学模型,并通过实验取得了精对苯二甲酸废水基质动力学常数.     

内循环UASB反应器-氧化沟工艺处理脱墨废水的研究

经絮凝沉淀后(沉淀时间为6h),采用内循环UASB-氧化沟工艺流程处理脱墨漂白浆废水。研究结果表明,当内循环UASB反应器的COD容积负荷为8kg/(m3·d),卡鲁塞尔氧化沟的污泥COD负荷为0.14kg/kg(以单位VSS计)时,在进水COD,BOD5,SS分别为5500mg/L,2500mg/L,2200mg/L的条件下,出水各项指标完全达到GB8978—1996一级排放标准,处理后水可回用。     

A2/O法处理表面活性剂废水

总结了A^2/O法处理表面活性剂废水的一个实例。实验证明，A^2/O法处理表面活性剂废水是可行的，其关键技术在于泡沫分离器和USAB反应器，废水经A^2/O工艺处理后，COD值从1200mg/L以上降至150mg/L以下，COD去除率达85％以上，废水处理量为80m^3/h。     

HRT control as a strategy to enhance continuous hydrogen production from sugarcane juice under mesophilic and thermophilic conditions in AFBRs

The objective of this study was to evaluate the effects of hydraulic retention time (HRT) (8–1 h) on H₂ production from sugarcane juice (5000 mg COD L⁻¹) in mesophilic (30 °C, AFBR-30) and thermophilic (55 °C, AFBR-55) anaerobic fluidized bed reactors (AFBRs). At HRTs of 8 and 1 h in AFBR-30, the H₂ production rates were 60 and 116 mL H₂ h⁻¹ L⁻¹, the hydrogen yields were 0.60 and 0.10 mol H₂ mol⁻¹ hexose, and the highest bacterial diversities were 2.47 and 2.34, respectively. In AFBR-55, the decrease in the HRT from 8 to 1 h increased the hydrogen production rate to 501 mL H₂ h⁻¹ L⁻¹ at the HRT of 1 h. The maximum hydrogen yield of 1.52 mol H₂ mol⁻¹ hexose was observed at the HRT of 2 h and was associated with the lowest bacterial diversity (0.92) and highest bacterial dominance (0.52).