The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A modified oxidation ditch process is applied in a full-scale municipal wastewater treatment plant. Compared with the conventional oxidation ditch, the modified oxidation ditch adds some microporous aerators to improve oxygen utilization. The measures bring about a further improvement of nitrogen and phosphorus in the urban wastewater. The monitoring results for one year show that the influent concentrations...
The technological parameters and running effect in the treatment of municipal sewage by an A2/O + Advanced treatment process are introduced and also aims to improve the application of the BIOLAK process in municipal wastewater treatment. The process flow, process parameters and structure size of the project were introduced. And the treatment effect and designing features were discussed. The running...
To study the treatment of the slaughter wastewater treatment, application of ABR/contact oxidation process of a lab scale was carried out, taking pig excrement as the inoculation source. Research results showed that COD removal rate lied from 72.2 ∼ 94.8% of the entire process, and the anaerobic VFA levels were lower than 400mg/L0 when the water quality fluctuated, the outflow remained stable, which...
In this paper, the degradation efficiency, effect factors and kinetics of dye Levafix Navy in UV/H2O2 system have been investigated. The results show that UV/H2O2 system has a high activity on degradation of dye Levafix Navy with so little H2O2 on so concentrated dye solution, and the photo decomposition reaction of the dye is concurrent besides the photo-oxidative degradation. The dye degradation...
Combined flocculation with complex extract process to treat with 1,2,4-acid wastewater, dicyandiamide formaldehyde was used as the flocculant; TOA(trioctylamine) as extracting agent, propyl butyl-carbinol as the diluent, NaOH as back-extracting agent, the best flocculation conditions are: pH value of the wastewater is 3, formaldehyde Dicyandiamide to wastewater at the ratio of 1%, stirred quickly...
This study discusses the water treatment technology, which could be used to accelerate the effectiveness of ozonation process when it is combined with the process of ion exchange. An effluent from a municipal wastewater treatment plant in Taipei is employed as the target sample. The results show that by ozonation alone, the TOC removal from the effluent could be achieved as maximum up to 49%. Further...
The multi-methods of catalytic oxidation- anaerobic-MBR has been applied to treatment a dyeing and printing wastewater on a engineering after anglicizing characteristics of the wastewater quality. It has been proved by actual operation that the method is a simple and effective with cost low, stable operation, simple maintenance and significant effectiveness for dyeing and printing wastewater treatment.
In recent years, the research of nitrogen and phosphorus removal in sewage has been a hotspot in the field of wastewater treatment at home and abroad with the worsening of the world-wide eutrophication of water bodies. Improved A2/O oxidation ditch of Wulongkou sewage treatment plant in Zhengzhou has achieved good effect to remove organic matter, nitrogen and phosphorus in sewage. Based on the operation...
Leather industry was a dominant industry in China, but the considerable tannery wastewater resulted in several serious environmental problems, which brought huge harm to human health. In this paper, coagulation-sedimentation combined with biological contact oxidation and SBR was explored for tannery wastewater treatment. Under the hydraulic retention time of 15h of biological contact oxidation process,...
The mineral processing wastewater of sulfide ore is easily cause environment pollution, because it contains xanthate. This thesis applied the combined technology of ultrasound and Fenton reagent to deal with the artificial and actual mineral processing wastewater, in terms of the effects of pH value, H2O2 and Fe2+ concentration on the removal efficiency of xanthate. The results showed that combined...
A combined process, demulsification-Fenton oxidation-coagulation, has been employed to treat a sort of high-strength and stable emulsion wastewater produced from a machinery factory. The influences of demulsifier species, dosage of Fenton reagents, oxidation reaction time and pH of coagulation have been investigated. The results indicate that AlCl3 is the most effective demulsifier and the optimal...
Following the introduction of characteristic of wastewater and correlated project in the Alpine Region, the problems were pointed out which should be noticed in wastewater treatment process selection in this specific area. Some suggestions about key design parameters were proposed, and the Two-stage Bio-contact Oxidation Technology was been selected and applied in wastewater treatment plant in north...
In this paper, the decolorization of simulated rhodamine B dye wastewater was investigated using a three dimensional electrode reactor with granular activated carbon(GAC) loaded with manganese oxide (MnOx/GAC) as the particle electrode. The decolorization ratio by two-dimensional electrode, traditional three-dimensional electrode and MnOx/GAC three-dimensional electrode method was compared respectively,...
Many Chinese small electroplating enterprises usually discharge mixed electroplating wastewater which contains CN-, Cr(VI), Cu2+, Zn2+ and other toxic heavy metals. It is hard for efficiently treating this mixed wastewate. At present, conventional chemical methods could usually meet discharge standard, but may not meet recycling need. In this paper, a combined treatment process include O3 oxidation,...
Experiments were conducted to examine the effects of nylon 66 chemical wastewater treatment by active carbon film filler contact oxidation process. The results showed that the formation of biofilm was relatively rapid on the surface of active carbon film filler, and the treatment efficiency was stable. The removal rate could reach 88.9% and 46.00% for COD and NH3-N respectively when the HRT was 22...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.