精枣废液制取沼气、治理污染实验室规模研究

STUDY ON LABORATORY—SCALE OF PRODUCING BIOGAS AND POLLUTION CONTROL FOR WASTE WATER FROM ACHINESE DATE TRANSFORM PLANT

本项研究采用厌氧过滤器(A.F)和上流式厌氧污泥床(U.A S.B)相结合技术由于 U.A.S.B 起动过程较长,工艺难以稳定,A.F 又易于堵塞等,经实验我们选择了一种资源十分丰富的有机废物填充在反应器中,它能给厌氧微生物一个非常适宜的环境。我们处理的红枣废水,其 C O D 约20000 mg/L,C O D 去除率80～90%,pH 值:7,1左右,沼气的产气率>3.5 L/L·d。

The technique introduced here in some way is that combining AF and UASB tech-niques.When the biogas fermentation method is adopted in UASB we meet with the diffi-culty because its starting procedure takes too long time and the operation is difficult to be clogged when the AF are being used too.We designed a new kind of packing material can be made from agricultural wastes of which there are plentiful in China.Those packing material packed in the reactor could sup-ply with suitable conditions for the anaerobic microorganisms.The cod of the waste water to be Treated was about 20.000mg/L.80～90% of which had beea removed.pH=/.1.The biogas productivity reached over 3.5L/L·d.