Abstract
In this paper, it uses the technology of coagulation sedimentation – hydrolytic acidification – contact oxidation in treating the jujube processing wastewater, which makes membrane forming on the combined filler in reactor successfully by adopting domestic wastewater, and then dilutes jujube processing wastewater with domestic wastewater according to certain proportion to realize acclimatization of the biological membrane and complete starting of the reactor, and finally completes the biochemical treatment test of the jujube processing wastewater diluted by the feed water via backflow of the yielding water. The yielding water is stable during the test operation, and it has greater removal efficiency as to CODcr and ammonia nitrogen.
Jujube is full of nutriments, has wide varieties, and possesses edible value, healthy-keeping value and medical value. Jujube processing has a long history in our country, there are numerous jujube processing enterprises, and the jujube is mainly processed to dried jujube, preserved fruit, jujube vinegar, jujube chips, jujube milk and jujube wine, etc. However, it has a greater difficulty to treat the wastewater generated in the jujube processing process, and the wastewater is one of the wastewaters with serious pollution in the food industry (Xu et al., 2014; Bi et al., 2010; Chen and Li, 2008; Wang et al., 2013). This test uses the technology of coagulation sedimentation – hydrolytic acidification – contact oxidation in treating the jujube processing wastewater, and achieves certain effects.
