Converting liq. animal manure or condenser water to dry prod. - by mixing with uronic acid, ground straw, crushed rock and gypsum, then heating

摘要

Liq. animal manure and condenser water are converted to a dry, sprinkable prod., by mixing 40-60 pts. of animal manure or condenser water, 20-30 pts. of uronic acid, 10-20 pts. of ground straw, 5 pts. of crushed rock and 15-25 pts. of gypsum, and heating the mixt. to 70-80 deg. C. Pref. the straw is comminuted to particle size below 2 mm. The crushed rock is completely dry, silicate rock, rich in minerals, e.g. basalt or porphyry, pre-heated to at least 480 deg. C. The gypsum is plaster of Paris. USE/ADVANTAGE - The prod. is a high value biological fertiliser. Damage by excessive local appln. of liq. manure is avoided, odour is reduced, and the material is easily stored and transported. The fertiliser can be used in regions away from large-scale animal rearing.