VERFAHREN ZUR REINIGUNG DER BEI DER RINDERHALTUNG IN GROSSTALLUNGEN ANFALLENDEN JAUCHEN

Purificn. is of high organic material contg. dung water obtd. in large scale stabling of cattle. In a first step, dung water is homogenised under aerobic conditions, without phase separation. Homogenised dung water is treated with coagulants, pref. Al2(SO4)3 and >=1 anion-active polyelectrolyte....

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Main Authors RECZEY,ISTVAN, KISS,EVA, MOLNAR,SANDOR, BORNEMISSZA,ENDRE, KUBO,SANDOR, KORDA,RUDOLF, MEZOE,ARPAD, LUKONITS,OTTO
Format Patent
LanguageGerman
Published 11.08.1977
Edition2
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
CHEMISTRY
FERTILISERS
FERTILISING
FISHING
FORESTRY
HUMAN NECESSITIES
HUNTING
MANUFACTURE THEREOF
METALLURGY
ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
PLANTING
SOWING
TRAPPING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:Purificn. is of high organic material contg. dung water obtd. in large scale stabling of cattle. In a first step, dung water is homogenised under aerobic conditions, without phase separation. Homogenised dung water is treated with coagulants, pref. Al2(SO4)3 and >=1 anion-active polyelectrolyte. Solid phase obtd. is separated from liq. phase on filter presses. Liq. phase is purified in a biologically activated sludge step. Activated sludge is removed. Biologically purified filtrate water is re-purified chemically, pref. with CaO as precipitant, setting clarified water pH 10-11.5. Purified water is sepd. from solid phase and neutralised. Ppte. formed is sepd. from purified water in a further settling step. Water-consumption is minimised. Solids obtd. can be composted naturally, for use as agricultural fertilisers. Liq. phase can be used for watering fields and causes no pollution. It can be re-used for rinsing stables. Dung water contg. 1.8-8 wt. % organic material can be processed to 2 end-prods.: purified water and pressed sludge.
Bibliography:Application Number: DE19772703842