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This paper suggests a technological process to oxidize stench sulfide wastewater containing dodecyl mercaptan with electrolyzing NaOH in the presence of active carbon. Preliminary experiments were conducted and good results were obtained. Under the condition that electrolyzing 1% NaOH with 3A current and the reaction temperature remains 20°C and the reaction time lasts 10~30 s, the stench dodecyl...
Considering the characteristics of caffeine wastewater including high concentrations of organics and nitrogen, poor biodegradability and dull color, micro-electrolysis combined with SBR process were applied to treat caffeine wastewater and the effects and mechanisms of treatments were studied. The results showed that using micro-electrolysis to pretreat caffeine wastewater, removal rate of COD was...
The electrochemical oxidation of atrazine on Ti/SnO2-Sb2O5/PbO2 electrode was studied by cyclic voltammetry in this paper. The electrochemical behaviour of the electrode in sodium sulfate solution and in the mixture solution of sodium sulfate and atrazine has been studied. The experimental results of cyclic voltammetry showed that acidic media was suitable for efficient electrochemical oxidation of...
Electrocatalytic oxidation (ECO) of phenol was carried out using a self-made anode, Ti/SnO2-Sb2O3-IrO2. Preliminary investigations showed that only a small fraction of phenol was oxidized by direct electrolysis, while complete degradation of phenol was achieved by indirect electrocatalytic oxidation using chloride as a supporting electrolyte. Chlorophenols and formic acid were the intermediate products...
In this paper, pretreating p-tertt-butylphenol formaldehyde resin synthesized wastewater has been carried out by the combined techniques of the ferric-carbon micro-electrolysis (abbreviated as FCME) and the Fenton reaction. The result shows that when the COD of the wastewater is between 3350~8370mg/L, pH=2.0 and the reaction time of FCME is 120 minute, the removal of COD is above 48% though the FCME...
In order to evaluate the electrolytic decomposition process of ammonia, the effects of current density and chloride ion were investigated. The Ti/RuO2- Pt electrode was used as the anode, and Ti electrode as the cathode. The current densities, of 5mA/cm2, 10mA/cm2, and 15mA/cm2, were applied during electrolysis. It was indicated that the ammonia-nitrogen removal efficiency increased with the current...
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