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In the paper, the integrated wastewater reclamation system of the combined biological aerated filter (BAF) and dynamic membrane (DM) technology was feasible and effective for dyeing and printing wastewater treatment. The experiment was carried out continuously under of the optimal condition of hydraulic retention time (HRT) of 1.0 h, pH of 7.0-8.5, temperature of 25-30°C and an air/water volume flow...
The inhibitory effect of streptomycin on methane production of anaerobic granular sludge treating starch wastewater was investigated. The results indicated that the methane production of anaerobic granular sludge was influenced in the presence of streptomycin ranged from 0 to120 mg/L. The larger final methane production, the less remaining COD and the higher final pH value at the end of tests were...
The alkaline wastewater from oil refinery is a high concentration alkaline wastewater, which contains a great deal of sulfide, phenol and oil pollutants. A novel two stage circulating biological aerated filter (CBAF) was used to treat the alkaline wastewater after its neutralization. The factors of various air/water volumetric ratio, hydraulic retention time (HRT), which affected the removal of COD,...
This paper is focusing on the investigation of a novel anoxicoxic hybrid membrane bioreactor (A/O HMBR) for the treatment of landfill leach ate. This new technique combined an efficient anoxic and oxic biological treatment process with a membrane filtration unit and has the advantages of simplifying pre-treatment facilities, relieving the loading of the subsequent treatment processes and optimizing...
Based on the characteristics of high COD, high ammonia and high suspended solids in livestock wastewater, a combined technology consisting of Internal Circulation (IC) anaerobic reactor and Sequencing Batch Biofilm Reactor (SBBR) was carried out. After start-up for 42 days, IC reactor could remove 80%-90% of COD with organic loading rate of 12 kg COD/(m3 day) in treating raw livestock wastewater....
Membrane-making wastewater contains DMF, with high COD, toxicity and non-biodegradability. In this work, aerobic Fe-C micro-electrolysis and three-dimensional electrodes technology were applied for the pretreatment aiming to improve the biodegradability of the wastewater. It was found that the optional pretreatment conditions were pH 3 for Fe-C micro-electrolysis and pH 5 for the three-dimensional...
A four-compartment ABR with an effective volume of 28 L was used to investigate the application of an anaerobic baffled reactor (ABR) in treating sugar-producing wastewater. The results indicated that the reactor could start up at an influent OLR of 2.5 kgCOD/m3-d and temperature of 35degC. COD removal rate could reach 89% on the 5th day. Then the influent COD increased from 5000 to 8000 mg/L, HRT...
This study investigated low temperature influence on package membrane bioreactor operation, applied in the remote mountain residential areas. During initiation, F/M ratio should be controlled above 0.05 kgCOD/kgMLSS-d by adjusting inoculated sludge concentration. Operation experienced three phases divided by temperature. Above 12degC, package MBR could keep excellent COD and NH3-N removal rate, and...
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