1.1 chlorine dioxide at room temperature, the yellow-green to orange-yellow gas with a pungent odor and chlorine similar; heavier than air, the oxidation capacity of 2.6 times the chlorine has a strong sterilization capability. Chlorine dioxide is soluble in water, the solubility of the chlorine gas 5 times, it is pure water, the dissolved state, the hydrolysis reaction hardly occurs, so that its disinfecting effect of the pH of the water with minimal impact, volatile chlorine dioxide, its liquid and gaseous extremely unstable, temperature, exposure or contact with the organic explosion will occur. Because chlorine dioxide pressure, temperature and light sensitive and can not be liquefied compressed storage and transport, are generally on-site preparation and use. Chlorine dioxide disinfectant mechanism 2 reaction of chlorine dioxide with 2.1 inorganics: Chlorine dioxide can be reduced to form iron oxide and manganese dissolved in the water, the removal of iron, manganese is effective. The reaction formula is as follows: 2ClO2 + 5Mn2 ++ 6H2O → 5MnO2 + 2Cl- + 12H + (1) ClO2 + 5Fe (HCO3) 2 + 3H2O → 5Fe (OH) 3 + 10CO2 + Cl- + H + (2) of chlorine dioxide and 2.2 The reaction of organic matter: The reaction of chlorine dioxide with an organic substance is more complex, the oxidation reaction mainly occurs, the main product is an acid, alcohols, epoxides and the like. Chlorine dioxide and phenol reaction does not generate smelly chlorophenol. Humic acid react with chlorine dioxide, does not generate trihalomethanes THMs and other organic halides. 2.3 According to experts, chlorine dioxide on the bacterial cell wall has a strong adsorption and penetration ability to effectively destroy bacteria containing sulfhydryl enzymes, microbial protein synthesis can be quickly controlled, so the chlorine dioxide on bacteria, viruses, etc. have a strong inactivation. Chlorine dioxide does not react with ammonia water so that the use of a high ammonia content of chlorine dioxide retains its disinfectant capacity of the entire sterilization. These bacteria in addition to general bacteria, as well as including E. coli, different bacteria, iron bacteria, sulfate-reducing bacteria, fungus polio virus, hepatitis virus, Lambert's Giardia cysts, Giardia cysts, etc. Spiked . Three chemical chlorine dioxide preparation method and application of chemical methods currently used to take ClO2 are the following categories: (1) the reaction of hydrochloric acid and sodium chlorite 5NaClO2 + 4HCl = 5NaCl + 4ClO2 + 2H2O (2) the reaction of hydrochloric acid and sodium chlorate 2NaClO3 + 4HCl = 2NaCl + 2ClO2 + Cl2 + 2H 2O (3) liquid-gas mixed reaction 2NaClO2 + Cl2 = 2NaCl + 2ClO2 expensive due to sodium chlorite method (1), (3) costs and higher operating costs, it is difficult promote the use of drinking water. At present, many domestic manufacturers developed using Naclo 3 and H2SO4 or HCl from the reaction of chlorine dioxide generator, the equipment smaller, simple equipment, easy operation and automation. Cheap and easily obtained materials for the production of water treatment applications, many small and medium water use this equipment to produce chlorine dioxide. This kind of mixed gas of chlorine dioxide generator accounted for 70%, and the remaining 30% of chlorine. Users longer needed the gas purification: 2NaClO2 + Cl2 = after 2NaCl + 2ClO2 use of chlorine dioxide purifiers content up to 95%. Chlorine dioxide generator running and maintenance of each system Siyuan Environmental Protection Equipment Co., Ltd. Weifang Siyuan cards manufactured chemical chlorine dioxide generator, mainly by raw material dosing system, the reaction system, control system, the composition of the finished product dosing system and other parts Its main facilities are: raw materials and stirred tank reactors, dosing metering pumps, temperature controllers, multifunction protection, water injector, etc., the entire system is simple structure, easy to operate, the boldness of the work using negative reaction high efficiency, high safety performance, with water, power, over temperature protection and other security features. In recent years production practice, the use of chemical chlorine dioxide generator to produce chlorine dioxide, encountered a thorny problem :( less than one) gas production; Room (two) big disinfectant chlorine taste; (c) plus between chlorine, acid storage equipment and facilities between serious corrosion; (d) one-way control valve failure; (e) dosing metering pump failure or metering inaccuracies. To this end, we have the problems one by one through the improvement and perfection after reaching the desired results, the effectiveness is obvious. Specifically, the following: 4.1 the raw water quality issues for gas production shortfall in the production of frequently encountered no major anomalies, but the normal amount of dosing of chlorine dioxide, chlorine is able to come up. The main reason may be the lack of supply of raw materials, lack of gas caused by the storm. In this regard, we have taken on the supply of raw materials shortage improvements are periodically measuring cup amount of sodium chlorate and hydrochloric acid dosing pump dosing is calculated on the amount of raw material, whether the ratio of the amount prescribed dosage; the boldness enough, re-grafting of the raw water ejector pressure tube to the factory water pressure pipe, pressure pipe so that the water pressure is greater than 0.3MPa, install a filter on the pressure pipe, filter pipeline debris and regularly cleaned weekly. Through these measures, the successful resolution of the problem of insufficient gas production. 4.2 chlorination disinfectant taste for big, equipment and facilities for severely corrosive disinfectant chlorine taste large main gases mist, chlorine dioxide, chlorine and other volatile compounds, most notably when the chlorine dioxide generator failure The leakage of chlorine, the main causes of water injector clogging, clogging the outlet chamber violence, low water pressure, pipe leaks, etc., on the chlorination equipment and facilities between serious corrosion, especially control systems electronic accessories. How to reduce or solve the corrosion problem, we designed a simple leakage of chlorine absorption unit, which would be: the chlorination five chlorine dioxide generator overflow pipe parallel to each other and connected to a small collection tank through a manifold, In the upper part of the collection box to install a chlorine leak alarm sensor, set up a deposit inlets at the lowest point of each of the overflow pipe, usually filled with water. When chlorine leakage accident occurred due to atmospheric effects, a gas leak in the collection box was quickly counter into other pipeline transport of chlorine, chlorine-free filled the entire workplace, protecting the work environment, while at the chlorine leak occurred on duty staff chlorine leak alarm signal can be obtained in the shortest time, and timely processing. Between 4.3 acid storage, chlorination equipment and facilities severe corrosion of hydrochloric acid with a strong command of the performance, each unloading tank fluctuations acid and hydrochloric acid, hydrochloric acid, will form a large number of mist on the surrounding environment, facilities great impact, nearby residents frequent complaints. We did a little technical innovation, basically solved the impact of acid mist, which would be: use the ejector pumping action, from the highest point of hydrochloric acid leads to a tank top DN20 pipes, water pipes connected to the high pressure ejector, ejector is installed at each end of a set of ball valves, regulating water ejector vacuum, mist for a long time, how much to adjust the valves according to mist turned degrees. When unloading the tank hydrochloric acid and hydrochloric acid fluctuations produce mist, use extraction ejector effect, mist absorbed quickly, with high-pressure water comprehensive, effective protection of the equipment. 4.4-way control valve failure, the reset is not in place a one-way control valve failure, it can not form a negative reaction tank, high pressure water through the ejector to reverse into the reaction tank, chlorine dioxide generator, there is no way of normal production The reaction tank pressure increased rapidly, pressure from negative into a positive, then the reaction mixture solution tank is discharged through the overflow pipe on the outside, it will affect production, but also cause environmental pollution. The main reason is the failure of the one-way control valve is less than the specified location reset, causing the system for leaks. We based on the geometry of the one-way valve, has been improved: First, instead of using PVC rod causes of PVC pipe, increasing the weight of the one-way valve; the second is the bottom portion of the check valve seal from cylindrical to round vertebrae, increased rigor combined with the pipeline to prevent a one-way valve missed. Improved, effectively solve the problem of the reset is not in place to reduce the probability of accidents. 4.5 dosing metering pump failure or inaccurate metering metering metering pump metering pump failure or inaccurate, affecting the normal production of chlorine dioxide, in addition to strengthening our inspection, strengthen metering pump out fluid volume monitoring, still in the original cast plus point chlorination system plus the addition of a vote at the sampling point, the implementation of real-time monitoring through an online instrument, the first time to grasp dosing, metering inaccuracies problem.