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微电解塔　


微电解反应基理是当废水在酸性条件下， Fe和C之间存在1.2V的电极电位差,其中，碳的电位高，成为微阴极；铁电位低，为微阳极。腐蚀电池与电解电极在酸性溶液中构成无数的微型电解回路，在其作用空间构成一个电场。在这一反应体系中，阳极反应生成大量的Fe2+进入废水,进而氧化成Fe3+,形成具有较高吸附絮凝活性的絮凝剂。阴极反应产生大量新生态的[H]和[O],  各电极反应的主要机理如下：
 
　　　　       微阳极：Fe-2e→Fe2+　【E0 (Fe2+/Fe)= -0.44V】
 
　　              微阴极：2H+ + 2e → 2[H] → H2 (酸性溶液中)
　　　　　                           【E0 (H+/H2)=0.00V】
　　　　在充氧状态时
　        O2 + 4H+ + 4e → 2H2O (酸性溶液中)
          【E0 (O2/H2O)=1.22V】
　　 　  O2＋H2O＋2e → HO2－＋OH－
           HO2－ → OH－＋[O]
   在PH以及反应时间适当时，可实现下列反应：
             NO-2 + 4H+ + 3e → 2/1N2+2H2O
              NO-3+ 6H+ + 5e → 2/1N2+3H2O
催化微电解对废水COD、色度去除和可生化性能改善的机理

1催化微电解对废水COD去除有明显的效果，是阴极反应产生大量新生态的[H]和[O],在偏酸性的条件下,这些活性成分均能与废水中的许多组分发生氧化还原反应,使废水的COD大幅度降低。

2催化微电解对色度去除有明显的效果，是由于电极反应产生的新生态二价铁离子具有较强的还原能力,可使某些**物的发色基团硝基—NO2 、亚硝基—NO 还原成胺基—NH2 , 新生态的二价铁离子也可使某些不饱和发色基团(如羧基—COOH、偶氮基-N＝N-) 的双键打开,使发色基团破坏而除去色度, 同时二价和三价铁离子是良好的絮凝剂,特别是新生的二价铁离子具有更高的吸附-絮凝活性,调节废水的pH 可使铁离子变成氢氧化物的絮状沉淀,吸附污水中的悬浮或胶体态的微小颗粒及**高分子,可进一步降低废水的色度,同时去除部分**污染物质使废水得到净化。

3催化微电解对可生化性有明显的改善是反应产生的新生态二价铁离子及大量新生态的[H]，具有较强的还原能力，能把废水中硝基类**物还原成胺基类**物，而一般胺基类**物的可生化性明显**硝基类**物，同时在充氧状态下产生的大量新生态的 [O]，使部分难降解环状和长链**物分解成易生物降解的小分子**物而提高可生化性。
 
催化微电解与常规铁碳反应器的比较

常规铁碳反应器
 目前国内外铁碳设备均是固定床，采用铁屑和碳按一定的比例作为填料，在不充氧鼓气的情况下运行，从国内外实际使用的情况来看，存在不少实用性问题
1 效率不高，易钝化反应速度不快
 常规铁碳经过一段时间的运行后，填料表面会形成钝化膜，废水中的有悬浮颗粒、油状及胶体状的东西也会部分沉积在填料的表面上，这样就阻隔了填料与废水有效接触，导致铁床处理效果降低。而一般采用稀硫酸进行浸洗活化，仅除去铁块表面的氧化膜，但对在酸性条件下形成的**类沉积物清除较难，铁床恢复活性比较困难，去除效率会急剧下降。
2  填料易板结，造成死床，填料更换困难
 常规铁碳由于采用铁屑，铁屑在比表面积大，在酸性条件下腐蚀较快，易溶解结块，造成短路和死区。铁床填料的板结除了导致铁床内部废水流态恶化致使处理效果降低外，出现沟流等现象,大大影响了处理效果还会使填料更换的难度大大增加。
3  填料成本高，易流失，造成运行费用大。
  常规铁碳一般采用铁屑和活性炭，这些原料都需要外购，需花费一定成本，同时铁屑颗粒细小，比表面积大，在酸性条件下腐蚀后容易形成流体状随水力冲刷而流失，而活性炭也因颗粒小，比重轻容易流失，造成运行费用大。
我公司生产的催化微电解设备
1 效率高，反应速度快，不易钝化。
催化微电解，填料中加入一定量的催化剂，且在反应器底部设有曝气装置，在运行时连续曝气充氧，废水在反应器内成沸腾状，废水在反应器内反应均匀，在填料表面不易结垢，清洗周期长，根据在酸性条件下形成的**沉积物，易溶于碱而不易溶于酸中的这一特性，反应器采用碱液清洗系统，使得清洗效果好。同时由于加入催化剂和充氧系统，使得处理效率比一般的铁碳高，反应速度快。
2  填料不板结，持续运行周期长，更换维修方便
3  填料成本低，不易流失（年消耗量约5%-10%）左右，运行费用小。
Company introduction: Jining Tian Tong Shui treatment equipment Co., Ltd. is a set of research and development, production, sales as one of the water treatment equipment enterprise. Our company specializes in *age treatment plant, *age treatment process, wastewater treatment equipment, industrial wastewater treatment equipment, water treatment equipment, domestic *age treatment equipment, *age treatment equipment and other equipment. The company relies on the perfect production testing equipment, the product quality is stable and reliable, the product is widely used in the field of environmental protection. At present, the equipment is sold to all parts of the country, and exported to more than 30 countries and regions, such as Japan, Holland, Russia, Middle East, Central Asia, Southeast Asia, South America and Africa. There is no best, only better "is always the pursuit of an ordinary day.  All staff of Tian Tong warmly welcome friends from home and abroad to visit and negotiate business! We are willing to cooperate with you sincerely to conspire the cause of environmental protection.
Microelectrolysis tower


Micro electrolysis reaction mechanism when the wastewater is under acidic conditions, electrode potential difference between Fe and 1.2V, C are the carbon potential, become micro cathode potential; iron is low, as the micro anode. Corrosion cells and electrolysis electrodes constitute numerous micro electrolysis circuits in acid solution, which form an electric field in its action space. In this reaction system, the anodic reaction generates a large number of Fe2+ into the wastewater and then oxidize into Fe3+ to form a flocculant with high adsorption flocculation activity. A large number of new ecological [H] and [O] are produced by the cathodic reaction, and the main mechanism of each electrode reaction is as follows:

Micro anode: Fe-2e to Fe2+ [E0 (Fe2+/Fe) = -0.44V]

Micro cathode: 2H+ + 2E - 2[H] - H2 (acid solution)
[E0 (H+/H2) =0.00V]
In the state of oxygenation
O2 + 4H+ + 4E to 2H2O (in acid solution)
[E0 (O2/H2O) =1.22V]
O2H2O2e, HO2OH
HO2, OH[O]
The following reactions can be achieved at the time of PH and the time of reaction:
NO-2 + 4H+ + 3E to 2/1N2+2H2O
NO-3+ 6H+ + 5E to 2/1N2+3H2O
Mechanism of improvement of COD, chromaticity removal and biodegradability of wastewater by catalytic micro electrolysis

1, catalytic microelectrolysis has obvious effect on the removal of COD from wastewater. It is the [H] and [O] produced by cathodic reaction which generate lots of new ecosystem. Under the condition of partial acidity, these active components can react with many components in the waste water to reduce the COD of wastewater greatly.

2 catalytic micro electrolysis on color removal has obvious effect, is due to the new ecological two valent iron ion electrode reaction has strong reducing power, can make some organic chromophore nitro - NO2, NO - nitroso - NH2 amine reduction, two iron new ecology can also make some saturation of the chromophore (such as carboxylic azo - COOH, -N = N-) of the double open, the chromophore destruction and removal of chroma, while two ferric and ferrous ion is a good flocculant, especially the two iron new has higher adsorption and flocculation activity, water pH. Iron ion into hydroxide floc particles adsorption in wastewater suspended or colloidal and organic polymer, can further reduce the chroma of wastewater, and remove part of organic pollutants to purify the water.

3 of the biodegradability of catalytic micro electrolysis has obvious improvement is a new ecological two valent iron ion reaction and a large number of new ecological [H], has strong reducing power, the wastewater of nitro compounds reduced into amino organic amine, and the general class of organic matter biodegradability was significantly higher than that of the nitro group a large number of new ecological organic matter, produced at the same time in the state of oxygen under [O], the part of refractory ring and long chain organic matter decomposition into small molecular organic compounds readily biodegradable and improve the biodegradability.

Comparison of catalytic micro electrolysis with conventional iron carbon reactor

Conventional iron carbon reactor
At present, both domestic and foreign iron and carbon equipments are fixed beds, which use iron scrap and carbon at a certain proportion as fillers and do not operate under the condition of no oxygen blowing gas. There are many practical problems from the actual situation at home and abroad.
1 efficiency is not high, easy passivation reaction speed is not fast
The conventional iron carbon after running a long time, the surface will form a passivation film in the wastewater with suspended particles, oily and colloidal things will be deposited on the part of filler on the surface, so they cut the filler and wastewater effective contact, leads to the decrease of iron treatment effect. The commonly used dip activation of dilute sulfuric acid, only to remove the oxide film on the surface of iron, but the organic sediments formed in acidic conditions is difficult to remove, iron recovery activity is more difficult, the removal efficiency will decline sharply.
2 fillers are easy to knot, cause the dead bed, and the replacement of packing is difficult
Due to the use of iron chips in conventional iron carbon, iron chips are larger in specific surface area, faster corrosion under acid conditions, and easy to dissolve caking, resulting in short circuit and dead zone. Metal filler hardening causes internal flow decrease resulting in deterioration of iron wastewater treatment effect, appear channeling phenomenon, greatly affected the treatment effect will make the replacement greatly increase the difficulty.
3 the cost of packing is high, easy to lose, cause the running cost is big.
The conventional iron carbon with carbon and iron, these materials need outsourcing, takes a certain cost, while iron fine particles, large surface area, corrosion in acidic conditions after the easy formation of fluid loss with water erosion, but also because the activated carbon particles are small, light weight easy loss, caused by high operating cost.
Catalytic micro electrolysis equipment produced by our company
1, the efficiency is high, the reaction speed is fast, and it is not easy to passivate.
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