水解酸化-好氧移动床膜生物反应器处理高浓度有机废水的试验研究

好氧移动床膜生物反应器(M-CMCBR)是生物膜法与微滤膜相结合的一种新型反应器。采用水解酸化-好氧移动床膜生物反应器处理高浓度有机废水和含酚废水。试验结果表明:此工艺可以提高难降解有机废水的可生化性,继而得到较好的出水水质。进水CODCr为3000～5000mg/L时,最终膜出水CODCr为30～90mg/L,总去除率为98.5%～99.5%。     

BAF工艺在炼油废水处理中的应用

BAF工艺用于处理炼油废水,水力停留时间3h,CODCr、石油类、酚、硫的去除率分别达到73.4%、84。4%、97.8%、93.5%,CODCr容积负荷为3kg/(m3·d),BAF段进水CODCr≤500mg/L,石油类≤30mg/L,挥发酚≤40mg/L,硫化物≤30mg/L时,出水各指标达到国家一级排放标准(GB8978-1996),具有较高处理效率和抗冲击负荷性能。     

炼油废水中水回用工程实践

某炼油厂废水采用隔油—浮选—A/O工艺,处理规模1920m3/d,但出水不能达标。经采用新型的内循环曝气生物滤池(BAF)和微滤组合工艺深度处理后,出水CODCr、石油类、氨氮、硫化物和挥发酚等炼油废水的主要指标分别小于50mg/L、2mg/L、5mg/L、0.1mg/L和0.5mg/L,可以作为厂区循环冷却水的补充水。     

新疆油田聚合物驱采出水处理试验研究

针对新疆油田聚合物驱采出水水质特点,研究采用气浮—回转悬浮生物床处理工艺。试验结果表明,在进水聚合物浓度为632mg/L时,出水含油量平均为8.05mg/L,悬浮物平均为10.46mg/L,去除率分别为98.6%和96.3%,对聚合物驱采出水具有良好的处理效果,出水水质经过滤后可达《克拉玛依油田注水标准》(Q/SY XJ0065—2003)。     

油田含油废水处理工艺及设备

介绍了某种油田含油废水的处理工艺和相关设备。含油废水经斜板隔油池 除油过滤机 超滤机处理后含油量由 2 10 0～ 2 30 0mg/L降至 1 6 4mg/L ,COD由 130 0～ 15 0 0mg/L降至 6 4mg/L ,处理后出水可再利用。     

高浓度机械加工废水处理工程

采用混凝气浮—Fenton氧化—SBR—活性炭吸附工艺处理某公司机械加工废水,在进水CODCr、石油类和SS分别为50000～300000mg/L、1000～1500mg/L、1300～2000mg/L情况下,处理后的出水CODCr、石油类和SS分别可达150～300mg/L、5～8mg/L、35～60mg/L,极大降低了废水中的污染物质。     

大连新港含油废水处理改造工程实例

介绍了大连新港含油废水处理厂的改造工程。两年的稳定运行表明 ,采用除油罐 -预曝气斜管隔油池 -贮水调节池 -生物滤池工艺处理含油废水 ,在废水含油量为 10 0 0～ 30 0 0mg/L时 ,最终处理出水含油量小于 5mg/L。预曝气斜管隔油池具有气浮和强化重力分离的双重作用 ,表面负荷可达 4m3/ (m2 ·h) ,除油效率高。改造工程总投资 15 3 4万元 ,盘活了 2个 5 0 0 0m3的贮水罐(资产 12 0 0万元 )和原斜板隔油池的占地 5 0 0m2 。     

SBR法处理制药废水的试验研究

采用SBR法处理制药废水。当进水CODCr为 2 4 0～ 110 0mg/L ,NH3-N为 14～ 55mg/L时 ,出水CODCr≤ 10 0mg/L ,NH3-N≤ 15mg/L ;CODCr的去除率 >90 % ,NH3-N的去除率 >70 %。     

O_3—BAF工艺用于炼油废水深度处理的中试研究

采用臭氧—曝气生物滤池(BAF)工艺对某炼油厂二级生化处理出水进行了中试回用处理。结果表明,在进水CODCr为65～85mg/L、色度为32～40倍、浊度为7～12NTU的条件下,当臭氧投加量为35～45mg/L、BAF的水力停留时间为3～4h、气水比为3∶1时,出水CODCr25mg/L、色度4倍、浊度2NTU,出水水质达到了生产工艺对回用水的水质要求。     

水解酸化-SBR-接触氧化法处理制药废水

采用水解酸化-SBR-接触氧化工艺处理制药厂生产过程中产生的丁提废水和虫草废水,处理水量2000 m3/d,进水CODCr约4000 mg/L.监测结果表明,处理后BOD5、CODCr和SS的去除率分别为98.5%、93%和80%,出水BOD5、CODCr和SS分别为28.3～30 mg/L、145.6～285.7mg/L和23.6～27.2 mg/L,出水各项指标符合<污水综合排放标准>(GB 8978-1996)二级标准.实际运行显示,该工艺处理效果稳定,耐冲击负荷性强.     

Floating treatment wetlands for domestic wastewater treatment

Floating islands are a form of treatment wetland characterized by a mat of synthetic matrix at the water surface into which macrophytes can be planted and through which water passes. We evaluated two matrix materials for treating domestic wastewater, recycled plastic and recycled carpet fibers, for chemical oxygen demand (COD) and nitrogen removal. These materials were compared to pea gravel or open water (control). Experiments were conducted in laboratory scale columns fed with synthetic wastewater containing COD, organic and inorganic nitrogen, and mineral salts. Columns were unplanted, naturally inoculated, and operated in batch mode with continuous recirculation and aeration. COD was efficiently removed in all systems examined (>90% removal). Ammonia was efficiently removed by nitrification. Removal of total dissolved N was ～50% by day 28, by which time most remaining nitrogen was present as NO(3)-N. Complete removal of NO(3)-N by denitrification was accomplished by dosing columns with molasses. Microbial communities of interest were visualized with denaturing gradient gel electrophoresis (DGGE) by targeting specific functional genes. Shifts in the denitrifying community were observed post-molasses addition, when nitrate levels decreased. The conditioning time for reliable nitrification was determined to be approximately three months. These results suggest that floating treatment wetlands are a viable alternative for domestic wastewater treatment.     

脱墨废水处理工程实例

介绍絮凝气浮-UASB-接触氧化工艺在处理脱墨废水中的应用。运行结果表明,进水CODCr=5000mg/L,BOD5=2000mg/L,SS=2500mg/L时,出水达到《污水综合排放标准》(GB8978-1996)的一级排放标准。     

饮用水深度处理技术现状及工艺比较

介绍了目前国内外应用的几种饮用水深度处理技术的现状,比较了这几种技术在使用中的优缺点及存在的问题.可供不同水源和出水水质深度处理时参考,展望了未来饮用水深度处理技术的趋势.     

净水厂生产排泥水处理工艺研究与设计

通过对净水厂生产排泥水的产生和水质特性进行分析,确定沉淀池排泥水和滤池反冲洗废水为净水厂排泥水的主要组成,结合设计干泥量的计算确定排泥水处理规模,在分析排泥水处理系统工艺流程布置特点的基础上对排泥水收集、调节、浓缩和脱水工艺进行分析,并对其中排水池、排泥池、浓缩池、平衡池、脱水工艺和场地布置的设计要点进行总结。     

纳滤深度处理在饮用水厂的应用与实践

张家港市第四水厂以长江水为原水,采用混凝沉淀超滤纳滤的双膜深度处理工艺,日处理规模为20万m3,出水水质远优于国家《生活饮用水卫生标准标准》(GB 5749-2006)和地方标准《江苏省城市自来水厂关键水质指标控制标准》(DB32/T 3701-2019).水厂核心单元纳滤系统结合超滤预处理表现出优越的工艺性能,能去除常规工艺难以去除的有机污染物,提供高品质饮用水.水厂在纳滤水厂建设、设备安装调试、工艺稳定运行等方面开展了大量的实践工作.     

Improvement of wastewater treatment performance of the Fukashiba treatment plant.

The Fukashiba Treatment Plant Kashima Rinkai Specified Sewage Works has received wastewater from the petrochemical complex (90%) and public sewage of Kamisu and Hasaki town (10%). For this reason, the plant is facing many difficulties in producing good quality effluent. In order to solve these difficulties, we are reviewing the treatment performance and making efforts for its improvement with nitrification inhibition, control of bio-persistent substances and the PRTR approach.     

土地处理系统在尾水处理回用中的应用

土地处理系统充分利用了土壤-植物-微生物系统的净化能力,既可去除水中有机污染物,又可去除造成水体富养化的氮、磷等污染物.以济南市水质净化一厂为例,探讨了土地处理系统处理尾水的可行性.尾水处理后回用于黄台电厂,缓解了水资源的紧缺程度,符合当地水资源开发利用的政策,具有一定的环境、经济和社会效益.     

城市污水再生利用的原位处理与集中处理分析与实践

北方某城市区域面临污水处理能力增加、河道生态补水及相关管网建设问题.通过对污水集中处理与原位处理的技术经济比较,确定采用原位处理.河道补水点附近将地下泵站改建为河道生态补给站,处理能力0.6万m3/d,就地处理就地补水;污水处理厂仅扩容2万m3/d,出水满足一级A标准;整个工程无需进行管网的新改扩建.河道生态补给站和污...     

Reuse of drinking water treatment sludge for olive oil mill wastewater treatment

Olive mill wastewater (OMW) results from the production of olive oil, which is an important traditional agro-industry in Mediterranean countries. In continuous three-phase centrifugation 1.0-1.2 m(3) of OMW are produced per ton of processed olives. Discharge of OMW is of serious environmental concern due to its high content of organic matter with phytotoxic properties, namely phenolic compounds. Meanwhile, drinking water treatment sludge (DWTS) is produced in high amounts and has long been considered as a waste for landfill. The aim of this work was the assessment of reusing DWTS for OMW treatment. High performance liquid chromatography (HPLC) analysis was carried out to determine the phenolic compounds present and to evaluate if they are recalcitrant. Treatability assays were performed using a dosage of DWTS from 50 to 300 g L(-1). Treatment efficiency was evaluated based on the removal of chemical oxygen demand (COD), biochemical oxygen demand (BOD), total solids (TS), total suspended solids (TSS), total volatile solids (TVS), oil and grease (OG), phenols (total phosphorous (TP) and HPLC fraction). Results from OMW HPLC characterization identified a total of 13 compounds; the major ones were hydroxytyrosol, tyrosol, caffeic acid, p-cumaric acid and oleuropein. Treatability assays led to a maximum reduction of about 90% of some of the phenolic compounds determined by HPLC. Addition of 200-300 g L(-1) of DWTS reduced 40-50% of COD, 45-50% of TP, a maximum of nearly 70% TSS and 45% for TS and TVS. The OG fraction showed a reduction of about 90%, achieved adding 300 g L(-1) od DWTS. This study points out the possibility of establishing an integrated management of OMW and DWTS, contributing to a decrease in the environmental impact of two industrial activities, olive oil production and drinking water treatment.     

一体式净水设备在废水处理工程中的应用

以中铝山东分公司新建废水处理站为例,介绍了一种集合多种水处理功能单元的一体式净水设备的结构、工作原理及设计中应注意的事项.一体式净水设备各水处理功能单元竖向排列,占地面积少,具有污泥浓缩的功能,可以达到节能减排的目的.