With the development of industry, organic wastewater emissions are increasing, especially in the chemical, food, pesticide and pharmaceutical industries discharged a high concentration of wastewater, high chromaticity and toxicity, containing a large number of biological components difficult to degrade, seriously polluting rivers, lakes and oceans.Titanium dioxide in wastewater treatment is actually Lead Dioxide Titanium Anode to electrolyze harmful substances in wastewater.Titanium Anode For Organic Wastewater Treatment is used to treat industrial wastewater, printing industry wastewater, domestic sewage treatment, oilfield wastewater treatment using a Titanium Anode, this product uses lead dioxide titanium anode.
This new technology of electrolysis water treatment has no need to add chemicals, small equipment size, occupies little space, does not produce secondary pollution, has been used to treat wastewater containing hydrocarbons, alcohols, aldehydes, ethers, phenols and other organic pollution. COD removal mainly relies on the oxidation reaction on the anode surface, directly oxidizing and degrading organic matter on the anode surface, the anode potential must be higher than the decomposition potential of organic matter, so the oxidation of organic matter on the anode and oxygen precipitation of the two competing reactions. Our company PSX mainly for this industry, design and development of an iridium-tantalum anode plate with activation layer, and also applied for a utility model patent, the anode in the titanium substrate coated with tin and antimony oxides composed of activation layer, on the one hand, can make it difficult for the electrolyte to penetrate into the surface of titanium, the diffusion of oxygen atoms or 02 ions to the titanium substrate has been blocked, so as to avoid the generation of Ti02, and at the same time, also improved Iridium Coated Titanium Anode's oxygen precipitation overpotential. Mainly in organic wastewater treatment to reflect its unique superiority, can make the organic matter directly in the anode surface is oxidized into CO2 and water, but also prevents the original oxygen atoms into the coating to destroy the coating, thus enhancing the service life of the anode. 
Electrochemical performance and life test (Reference standard HG/T2471-2007 Q/CLTN-2012)
| Title | Plating layer mm | Oxygen precipitation potential V | Test conditions | CL-content |
| Titanium-based lead dioxide | 3 | <1.73 | 1mol/L H2SO4 | ＜2g/L |
Practical cases1: electrolysis 100m³/h refining second purification reverse osmosis concentrated water
1、Process route and flow
This project adopts sodium hypochlorite catalytic oxidation and electrolytic catalytic oxidation process to carry out separate and mixed treatment tests on salt-containing biochemical effluent and reverse osmosis concentrated water, and the results show that, under their respective suitable conditions, the effluent COD is <50mg/L after separate or mixed treatment.
2 、COD degradation effect of different systems of coated titanium anode and conclusion | Electrode type | Inlet COD/mg.L-1 | Effluent COD/mg.L-1 |
| Titanium-based iridium-ruthenium | 125 | 67 |
| Titanium-based iridium-tantalum | 125 | 56 |
| Titanium-based iridium ruthenium | 125 | 56 |
| Tin tin antimony interlayer titanium based lead dioxide | 125 | 47 |
| Composite interlayer titanium-based lead dioxide | 125 | 21 |
As can be seen from the above table, the titanium-based composite interlayer lead dioxide electrode has the best treatment effect on sewage under the same influent water and test conditions. The same titanium-based lead dioxide, composite interlayer titanium-based lead dioxide electrode treatment effect is better than the tin-antimony interlayer titanium-based lead dioxide electrode.
The reason is analyzed as follows: the titanium-based composite interlayer lead dioxide has a higher oxygen precipitation potential than other electrodes, which can effectively prevent the occurrence of side reactions in the electrolysis process, and the current efficiency is high, so the treatment effect is good.
Practical cases2:Treatment of 200m3/h printing and dyeing wastewater site data
From the following data, we can see that the composite intermediate layer of Lead Dioxide Anode in the degradation of COD in printing and dyeing wastewater, the effect is more obvious, through the step cycle electrolysis, in the treatment of the time of 2h, so that the high concentration of COD to reduce the national emission standards of 50ppm. | Electrolysis time (min) | Ammonia Nitrogen (mg/L) | COD (mg/L) | Saturation (color theory) |
| 0 | 71.26 | 592 | 250 |
| 15 | 50.26 | 468 | 100 |
| 30 | 38.64 | 368 | 30 |
| 60 | 10.94 | 276 | 8 |
| 90 | 0.22 | 140 | / |
| 120 | <0.5 | 37 | / |
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