发明名称 |
TREATMENT METHOD OF SLUDGE FROM A WASTEWATER TREATMENT SYSTEM FOR FLUEGAS DESULFURIZATION |
摘要 |
<p>PROBLEM TO BE SOLVED: To uniformize sludge and gypsum and to obtain a dehydrated cake high in commodity value as recovered gypsum by introducing a gypsum slurry and a sludge slurry into a stirring tank and adding a polymeric flocculant to the stirring tank under mixing and stirring before dehydrating the slurries by a dehydrator. SOLUTION: The gypsum slurry discharged from the gypsum thickener 1 of a lime gypsum method exhaust gas desulfurizer is introduced into a stirring tank 2 by a pump P1 while the sludge slurry discharged from the concn. tank 3 of the exhaust gas desulfurizing waste water treatment apparatus is also introduced into a stirring tank 2 by a pump P2 and the gypsum slurry and the sludge slurry are mixed and stirred in the stirring tank 2. A polymeric flocculant is added to the stirring tank 2 from a storage tank 4 by a pump P3 to perform flocculation treatment. The flocculation treatment slurry of the stirring tank 2 is fed to a dehydrator 5 by a pump P4 to be subjected to dehydration treatment and a dehydrated cake and a dehydrated filtrate are respectively discharged out of the system. As the polymeric flocculant, an anonic or nonionic polymeric flocculant is used.</p> |
申请公布号 |
JP2000325968(A) |
申请公布日期 |
2000.11.28 |
申请号 |
JP19990136033 |
申请日期 |
1999.05.17 |
申请人 |
KURITA WATER IND LTD;TOHOKU ELECTRIC POWER CO INC;TOHOKU ELECTRIC POWER ENGINEERING & CONSTRUCTION CO LTD |
发明人 |
MURAKAMI TAKAFUMI;HATTA TAKESHI;SUGAWARA SATOSHI;IMAIDE KAZUHIRO;MORITA RYOICHI;FUJIWARA NOBUNORI |
分类号 |
B01D53/50;B01D21/01;B01D53/77;C02F1/56;C02F11/14;(IPC1-7):C02F1/56 |
主分类号 |
B01D53/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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