垃圾渗滤液国外应用实例与新技术-Dechin.

1、国外垃圾渗滤液应用实例与新技术电催化+BioDopp生化n处理技术现状及研究进展n电催化与电驱动膜简介n国外应用n国内应用及现状n技术原理nMelon+BioDopp生化技术n国外垃圾渗滤液应用n国内技术实施n技术原理n工艺流程设计 垃圾渗滤液是城市生活垃圾卫生填埋地产物，处理不当会对环境造成更严重的二次污染。 垃圾渗滤液处理方法一般有物理化学法和生物处理法。资源化低能耗环境友好型成本高处理效率低存在二次污染生物法好氧生物处理法厌氧生物处理法厌氧-好氧组合工艺土地处理法物理化学法化学沉淀吸附法膜法（纳滤、超滤、反渗透等）化学氧化光电催化氧化蒸发法经济有效国外新型、成熟的生物处理技术及其组合工艺

2、 加拿大IUT垃圾填埋场垃圾渗滤液处理工艺Melon电催化厌氧反应器Melon电催化CH4、CO2浮渣离心沤肥发电系统电力输出工艺要点：平衡B/C和控制C/N；Melon 系列电催化技术原理图： 电催化氧化是处理难降解有机污染物的有效方法。 该技术有别于其他技术的特点在于它的运行和维护成本低，设备简单易操作，能耗少，处理效果十分优秀。最重要的一点它是一个环境友好型技术。 鱼阿For example, traditional models for the formation of oil and natural gas typically involve a catagenic process

3、dominated by thermal cracking reactions that release low-molecular-mass hydrocarbon fragments. These reactions are viewed as unidirectional, kinetically controlled processes that are influenced solely by time, temperature and the composition and structural characteristics of the source kerogen. Howe

4、ver, inorganic compounds such as water and minerals may participate as reactants or catalysts during organic matter maturation. Moreover, many organic alteration products participate in processes that create or destroy sediment porosity and permeability, which has direct implications for petroleum m

5、igration and trapping.Other examples of important organic-inorganic interactions include: aqueous-organic redox reactions, mineral catalysis of petroleum generation, mineral absorption of hydrocarbons, thermochemical sulfate reduction, organic acid formation, catalysis of natural gas formation, wate

6、r and minerals as sources of reactive H and O, and the effect of hydrocarbon oxidation on carbonate systematics.The Hydrogen and Oxygen of Water The hydroxyl radical, OH, is the neutral form of the hydroxide ion (OH). Hydroxyl radicals are highly reactive and consequently short-lived; however, they

7、form an important part of radical chemistry. Most notably hydroxyl radicals are produced from the decomposition of hydro-peroxides (ROOH) or, in atmospheric chemistry, by the reaction of excited atomic oxygen with water. Molecular orbital of the hydroxyl radical with unpaired electron 8Oxidizing Str

8、ength of OHOH oxidizing properties are comparable to Fluorine (F2) the most electronegative element in the periodic table 9Oxidizing agent Half reactionsStandard-State Reduction Potentials, Eo MnO2MnO2(s)+4H+2e- =Mn2+2H2O21.23 Cl2 Cl(g)+2e-=2Cl-1.36 ClO2ClO2+2e-= Cl-+ O21.50 H2O2H2O2+ 2H+2e-=2 H2O1.

9、77 O3 O3+2H+2e-= H2O+ O22.07 OHOH+ H+2 e-= H2O2.80 F2F2(g)+ 2H+2e-=2HF3.06Water Treatment TechnologiesEFFECTS OF OH ON LONG ORGANIC CHAINSThe high oxidizing properties of OH radicals is highly effective in breaking down long organic chains.Most organic waste passing through the system is quickly bro

10、ken up into carbon dioxide, water, and smaller organic and inorganic ions through oxidation. Water Treatment TechnologiesThe hydroxyl (OH) radical is unstable and highly reactive. Required retention time is short, usually less than 2 picosecond.The reactor starts a chain reaction, in which longer an

11、d unstable organic chains are first broken down to smaller ones. The treated water is highly suitable for further biological system.Long chain carbon reductions for most applications range from 30% to 65% in 30 mins May be used to effectively deionizer water in many applications.Disinfects. Oxidizin

12、g effect kills most bacteria and viruses.REACTION TREATMENT CHARACTERISTICS柱状活性炭填料特制极板Melon特制电极具有耐腐蚀性好、机械强度高、质地均匀、可重复使用等优点，更重要的是电催化性能高，产生氧化能力极强的OH，加速有机无污染分解。 反应体系在反应过程中包括：气-液-固多相间的接触以及界面反应。曝气起到搅拌溶液的作用，使OH与溶液充分接触。多相催化技术与电化学体系相结合三维三相电极体系稳定性试验 System stability data实验次数实验次数去除率去除率/%CODNH4+-N184.194.2578.

13、381.61073.284.81570.572.92065.271.1反应条件：电压15V-20V，曝气0.08m3/h，反应时间120min。n电催化氧化技术作为生化处理的预处理工序。n运行成本主要来自电能的消耗。n垃圾渗滤液中的难降解有机污染物被直接矿化或降解为小分子有机物，而NH4+-N则主要被氧化为氮气和水。n能够高效去除COD和NH4+-N是后续生化的前提条件。Melon电催化氧化正交实验结果Electro-catalysis oxidation results of orthogonal test序号序号PH槽电压槽电压/V曝气量曝气量m3/h极板间极板间距距/cmCOD去除去除率

14、率/%NH3-N去去除率除率/%17.4120.021039.665.427.4140.041217.363.237.4160.061842.961.848.1120.081023.358.958.1140.081026.555.368.1160.081031.261.577.7120.081010.153.287.7140.081018.255.797.7160.081028.558.1世界范围技术应用日本、沙特、新加坡电驱动膜与电催化技术简介 Melon Melon 系列电催化技术是在特殊的催化剂作用下， 将有害废水中的高浓度盐类、有机物，含硫化合物，重金属离子，酸，碱等，通过氧化还原，离

15、子交换分离等反应过程，将污水转变为合格水。在处理废水的过程中，可以附带产生一系列有经济价值的产品，如酸和碱，贵金属等。该技术充分的展现了污染物的无害化和资源化循环利用，可以广泛的应用于处理高浓度含盐废水，有机、含油废水，海水淡化，烟气净化，酸、碱渣废水资源化等各种水处理领域。p 国内应用p 预处理p 脱盐模块p 脱盐模块p 电催化p 澄清池 利用新鲜垃圾渗滤液作为发酵基质进行产甲烷，回收有机废水中的能源物质，具有环境和能源的双重效益，也是国外垃圾渗滤液实践应用和技术研究的重点。 垃圾渗滤液属于高浓度有机废水，其中含有大量的有机物，具有发酵产氢和甲烷基质的重要潜力。p国外垃圾渗滤液业绩p电驱动膜除盐p 电驱动力平衡渗透压、浓度差；p 选择性离子膜，寿命4-5年；p 同时氧化有机物；p 分离成酸和碱，分别回用。 吨水投资合理 吨水运行能耗2度 资源化p 稀硫酸 10%p 稀盐酸 10%p 碱液 10%回收利用药剂类衍生应用药剂类衍生应用印染废水絮凝脱色：制革废水絮凝脱色：药剂类衍生应用药剂类衍生应用煤化工、焦化废水脱焦油：污泥脱水：垃圾渗滤液工艺方案BioDopp处理垃圾渗滤液柏林瓦尔茨湖特市垃圾填埋场兴建于1996年，日产生高浓度垃圾渗滤液150m3。其垃圾渗滤液应用BioDopp生化工艺处理，现该污水处理站已经连续运行近15年，