发明名称 |
Treatment of waste water contg. latex - using ferric chloride and aluminium chloride and sulphate as precipitants, and nonionic polymer flocculant |
摘要 |
Treatment of latex-contg. waste water comprises: (a) adding (per kg of latex in 1m3 of waste water): 2000-4000 ml of a 2-3% aq. soln. of a precipitant (I) and 1000-1500 ml of a 0.1-0.25% aq. soln. of a flocculant (II); and (b) separating and dewatering the resulting latex sludge. (I) comprises at least technically pure, sublimed, anhydrous FeCl3, AlCl3 and Al2(SO4)3 in a wt. ratio of 12:1.3:1 to 17.2:1.8:1. (II) comprises a synthetic water-soluble nonionic organic polymer. Also claimed is an appts. for treating latex-contg. waste water, comprising a stirrer vessel (1); delivery lines, metering devices and storage tanks for precipitant (2) and flocculant (3); and an outlet line connected to a dewatering device (4). Pref. (I) has a wt. ratio of 17.2:1.8:1 and is added as a 2% soln. (II) is added as a 0.1% soln. ADVANTAGE - The process provides rapid phase sepn. of the latex particles and uses no lime to increase the bulk of the latex sludge (cf.DE2021826).
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申请公布号 |
DE4229264(A1) |
申请公布日期 |
1994.03.03 |
申请号 |
DE19924229264 |
申请日期 |
1992.09.02 |
申请人 |
METALLGESELLSCHAFT AG, 60323 FRANKFURT, DE |
发明人 |
PUSCHMANN, DIRK, 6257 HUENFELDEN, DE;SCHWIETZER, BERND, 6072 DREIEICH, DE |
分类号 |
C02F1/52;C02F1/54;(IPC1-7):C02F1/52;C02F1/56;C02F1/66 |
主分类号 |
C02F1/52 |
代理机构 |
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主权项 |
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地址 |
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