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In order to investigate the feasibility of treatment of dairy farm wastewater by constructed wetland and to provide the operation parameters for a full scale constructed wetlands to improve the quality of effluent water, A pilot test was conducted with a plug flow constructed wetland to treat dairy farm wastewater in Ji'nan city. The results show that, under influent loading rate 3m3·d-1, the average...
By changing phosphorous removal tank of Biolak process into hydrolytic acidification tank. The super efficiency shallow air flotation and improved Biolak process is adopted to treat the waste water of paper making factory. Meanwhile, the article introduces the apiece structon, the performance parameter and the economy technology index. The operating results show that the effluent reaches the "Standards...
High-efficient iron-based deodorant was prepared by using pyrite slag. Its deodorizing properties were studied in the laboratory and the optimal technical conditions were determinated. As a practical example, the "chemical absorption + deodorant adsorption" joint treatment process was selected to clean odour from wastewater treatment plant in a pharmaceutical company, in which the self-prepared...
Recovery of high pure Terephthalic Acid (TA) from Alkali weight-reduction wastewater by PET hydrolyzing has been researched by purified mother liquid with activated carbon adsorption. The characters of TA obtained were investigated by various indexes. The effects of activated carbon on crystaled TA were also been studied by scanning electronic microscopy (SEM) and particle size analysis. Results has...
Cement-soil samples were made from composite cement (25%), red clay (75%) and proper amount of ultra-pure water. The samples were used to treat sewage water in the experiment of anaerobic reaction and aerobic reaction respectively. The raw sewage was collected from the inflow path of a wastewater treatment plan and it mainly consisted of domestic sewage. Results showed that the effect of ion exchange...
The performance of a pilot-scale vermifiltration treatment process for municipal wastewater was investigated at hydraulic loadings of 2.4, 4.8, 5.6, 6.7m3/m2.d. The results indicated that the removal efficiencies of CODcr, BOD5, SS and NH4-N were in the range of 47.26%~57.55%, 54.78%~59.29%, 62.06%~77.90%, and 21.01%~52.58%, respectively. The average sludge reductions were from 38.2% to 44.7%. The...
The high-alkalinity wastewater generated from aluminum factory is treated by ultrafiltration-electrodialysis integrated technology. Firstly, an ultrafiltration device is used for pretreatment of alkaline wastewater to make permeation solution meet the influent requirement of electrodialyzer and enrich the aluminum therein; secondly, the ultrafiltration permeation solution is adjusted by electrodialysis...
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