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Experimental Study on Use of Treated Domestic Sewage as Criculating Coling Water in Power Plant(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2007年03期
Page:
30-34
Research Field:
Publishing date:

Info

Title:
Experimental Study on Use of Treated Domestic Sewage as Criculating Coling Water in Power Plant
Author(s):
Li Chuantong1; Wei Rongzhang2
1.School of Power Engineering,Nanjing Normal University,Nanjing 210042,China;2.Datun Coal & Electricity Company,Xuzhou 221618,China
Keywords:
dom estic sew age;  pow er plant;  c irculating cooling wa ter;  wa ter treatm ent;  op tim ization
PACS:
TM621
DOI:
-
Abstract:
After routine physical treatm ent, the dom estic sew age still conta ins ammon ias, m icrobes and suspended m atters. If used d irectly as the circu la ting coo ling w ater in pow er p lant, it w ill resu lts in the corro sion o f heat exchange surface in condenser, and the heat resistancew ill increase on w ater side due to a lgae g row th so as to influence the therma l econom y o f the units. In this paper, stud ied are the reasonable treatm ent m ethod and pro cess o f the dom estic sew ag e as c irculation coo ling wa ter, and the influence factors a re analyzed and optim ized. The industria l exper im ent on use o f dom estic sewage as c irculating coo ling w ate r is conducted in the tw o 12MW coa-l fired flu id izedbed units, and the two yea r continuous operation indicates tha t th is techno logy features env ironm en tal pro tection and h igh econom y. By using the rubber ba lls c leaning once a w eek, the ends tem pe rature d iffe rence o f condenser is kept less than 5℃ , and even at the env ironm enta l temperature o f 38 ℃ , the temperature o f exhaust steam neve r exceeds 45℃ . The expe rim ental resu lts show tha t the dom estic sew age can m eet the dem ands o f circu lating coo ling wa ter a fter reasonable treatm ent and pro cess optim iza tion, and it no t on ly reduces the w ater fees but a lso con tributes to the improvem en t of Ch ina’ s env ironm enta l pro tection

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Last Update: 2013-06-04