PROBLEM TO BE SOLVED: To provide a method in which animal husbandry wastewater is performed with a cleaning process and a by-product can be effectively used easily.SOLUTION: The recycling method of animal husbandry wastewater by microalgae is characterized as follows. Animal husbandry wastewater is performed with solid-liquid separation, microalgae is cultured with the liquid, the liquid is purified, an obtained microalgae growth liquid is added with a flocculant of which the principal ingredient is a radiation crosslinking body of γ-polyglutamic acid or γ-polyglutamic acid salt, the microalgae is condensed, and a mixture of an obtained microalgae wet matter and a liquid that is added with a carbohydrate, and is performed with lactic acid fermentation under the lactobacillus coexistence is fed to livestock as feedstuff.COPYRIGHT: (C)2013,JPO&INPIT【課題】畜産廃水を浄化処理するとともに副産物を簡単に有効利用できる方法を提供する。【解決手段】畜産廃水を固液分離し、その液分で微細藻類を培養し、該液を浄化するとともに、これによって得た微細藻類生長液にγ-ポリグルタミン酸又はγ-ポリグルタミン酸塩の放射線架橋体を主成分とする凝集剤を添加し、該微細藻類を凝集させ、これによって得た微細藻類湿物と、糖質を添加し乳酸菌混在下乳酸発酵させた液との混合物を、飼料として家畜に給与する、畜産廃水の微細藻類による資源化処理法。【選択図】図1
