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Studies on the Process Optimization in the Treatment of Sludge Dewatering Using Cationic Flocculant PDA(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2003年05期
Page:
603-609
Research Field:
Publishing date:

Info

Title:
Studies on the Process Optimization in the Treatment of Sludge Dewatering Using Cationic Flocculant PDA
Author(s):
ZhangYuejun GuXuefang ① DongYuegang
School of Chemical Engineering, NUST,Nanjing 210094)
Keywords:
dimethyldially lammonium chloride acrymide cat ionic flocculant dewatering of sludge process opt imizat ion
PACS:
X703
DOI:
-
Abstract:
It is reported in this paper that the applicat ion process of cat ionic flocculant PDA w as optimized in the t reatment of sludge dew atering in municipal sew age. Using the CODCr v alue and transmit tance of upper layer liquid and the demension and w ater-containing amount of formed f locs as evaluating index , a series of dosage experiment s of flocculant PDA added into the sewages w ith different sludge concent rat ions w as carried out, and the dosage ex periments of flocculant F4 were used as a comparison. The experimental result s show ed that the opt imum adding dosages of f locculants w ere obviously related to the sludge concentrat ion in sew age, and w hen controlling the concent rat ion amounted to 1. 6% ( mass rat io, dried sludge/ sewage) , the flocculant dosages for PDA and F4 reached their minimum amounts of 0. 787 ‰ ( mass rat io, flocculant/ dried sludge) and 2. 03 ‰ , respect ively. The flocculant cost s for sludge dew atering reached their low est .

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Last Update: 2013-03-17