The experimental results indicated that treatment of laboratory waste water with chemical flocculation method couid give remarkable effects on removing COD_(Cr), BOD_5, organic matter and heavy metal ions etc.
This thesis introduces the general principles of the biological treatment technology for heavy metal wastewater and particularly analyses present research situation and application prospects of microbiological coagulation method, biosorption method and phytoremediational technique.
Coking-plant wastewater can be treated by anaerobic/aerobic(A/O)process fOrbiological removal of nitrogen,followed by flocculation process with polymerized ferricsulfate as flocculant,resulting in NH_3-N<15mg/L and COD: 96-158mg/L in the effluent.
In this paper the quality of the turbid recirculating water attain the standard of recycle( the oil content>5 mg/ L, TSS<20 mg/ L), making use of the flocculating method and ozones technology to dispose the turbid recirculating water .
Comparing chitosan flocculating method with alcohol precipitation method,the retention rate of salidroside was 95.32%,88.15% and the total amount of solid existing in the solution was 59.7%,63.0%,respectively.
Comparing the Chitosan flocculating method with alcohol precipita tion method,the retention rate of Salidroside was 95.32%,88.15% and the total a mount of solid existing in the solution were 59.7%,63.0%,respectively.
Discrete lesions of the brainstem auditory pathway were made unilaterally using a stereotaxic radiofrequency coagulation method, and the BAEPs were recorded before and after the lesions to observe the alterations.
No change in the anticoagulant effect of phenprocoumon was observed during or after two weeks on cimetidine, as measured by the thrombotest coagulation method, prothrombin time, fibrinopeptide A concentration and plasma phenprocoumon level.
Compared with the film by coagulation method, the HNTs in the as cast film show less profound effect on the nucleation of the crystallization of the PVA.
Plasma protein C levels were determined with the coagulation method and were low in 10 cases.
Aneurysms experimentally induced by using the silver nitrate coagulation method in 10 Wistar Albino rats are wrapped with Polyglactin 910 and Fibrin Sealant.