摘要
Hansenula anomala were general pale yellow oval-shaped bacteria in aerobic biochemical wastewater process,but transformed into pale yellow round-shape under hypoxia condition.A better precipitation of lysine wastewater could be obtained by using Hansenula anomala in hypoxia biochemical treatment.Therefore,the lysine wastewater could be used to produce yeast protein feed at 23-33 ℃ water temperature and 2.8-4.4 p H by Hansenula anomala in hypoxia condition.The results indicated that removal rate of chemical oxygen demand（COD） was 65.8%,and that of suspended substance（SS） was 95.6%.Then the deposited yeast protein was dried after secondary sedimentation and steam sandwich concentrated method.Results showed that 3.9 t yeast protein feed could be obtained every day,and its price was 3 000 Yuan per ton,so that the annual profit of company would be 9.6 million Yuan after deducting the operating cost of wastewater treatment.
Hansenula anomala were general pale yellow oval-shaped bacteria in aerobic biochemical wastewater process,but transformed into pale yellow round-shape under hypoxia condition.A better precipitation of lysine wastewater could be obtained by using Hansenula anomala in hypoxia biochemical treatment.Therefore,the lysine wastewater could be used to produce yeast protein feed at 23-33 ℃ water temperature and 2.8-4.4 p H by Hansenula anomala in hypoxia condition.The results indicated that removal rate of chemical oxygen demand（COD） was 65.8%,and that of suspended substance（SS） was 95.6%.Then the deposited yeast protein was dried after secondary sedimentation and steam sandwich concentrated method.Results showed that 3.9 t yeast protein feed could be obtained every day,and its price was 3 000 Yuan per ton,so that the annual profit of company would be 9.6 million Yuan after deducting the operating cost of wastewater treatment.
