摘要果汁饮料以其独特的味道与营养价值受到大众消费者的喜爱，但是果汁饮料 生产过程中需要使用大量的新鲜水，但排出时是高浓度有机废水，如果直接排放 会对水体环境造成巨大危害，进而危害到人类健康，因此需要进行处理以改善水 质。83996

本课题的目的是根据现有可行技术设计出合理的污水处理方案，并根据现在 的条件提出合理的建设意见，务必要做到保护环境的同时还要为厂家尽量节约成 本。

本次设计课题为果汁饮料厂废水处理，污水水量为 2500m3/d，按规定选择安 全 系数 K2=1。8。 废 水中 各 项 指标 分 别 为： CODCr2100mg/l ， BOD51400mg/l ， SS200mg/l，PH6-9。由于废水中的有机物含量特别高，若不经过处理直接排放将 对环境造成巨大危害，根据目前所掌握的知识决定采用“UASB+SBR”进行处理， 又因为水中含有较多果渣等固体物质，因此需要对废水进行预处理，所以最终的 方案定为“预处理+UASB+SBR”。因为原水中含有较多果皮碎屑等，故采用预处 理防止对后续工艺设备造成损害，预处理后可使水中 SS 降低 75%，因为去除的 固体物质含有有机物，同时也降低了水中有机物含量，能使水中 BOD5，COD 各 降低 10%，7%。厌氧反应可以高效的去除水中的有机物含量，经 UASB 处理能 使水质指标达到 COD=293mg/l，BOD5=189mg/l，对 SS 的作用很小可以忽略。 经厌氧反应后的废水中还是含有一定量的有机物，用好氧反应进一步处理，可以 使水质指标达到 COD<100mg/l，BOD5<30mg/l，SS<70mg/l，达到《污水综合排 放标准》(GB8978- 1996) 一级排放标准。

毕业论文关键词：果汁废水，UASB，SBR，有机废水

Abstract Juice drinks is popular among in consumer becaues of its unique flavor and nutriti onal value 。but it need to use large amounts of fresh water in beverage production pro cess of fruit juice。This waste water contains a lot of organic matter。Direct discharge of these polluted water will cause serious harm to the environment and harmful to huma

n health。So,In order to improve water quality, the sewage must be treated。

The purpose of this paper is according to the existing technique is feasible to desi gn a reasonable sewage treatment scheme and reasonable suggestions are put forward according to the present conditions, be sure to do environmental protection but also fo r the manufacturers try to save costs。

This design topic is the fruit juice beverage factory wastewater treatment, sewage water is 2500m3/d, according to the provisions of the choice of safety factor K2=1。8。 wastewater in the indicators are: CODCr=2100mg/l, BOD5=1400mg/l, SS=200mg/l, P H6-9。Because the waste water contains many organic matters, it will seriously pollute the environment if it is not treated by direct discharge。 According to the current under standing of the knowledge, the design using“UASB + SBR”processing, and because t he water contains many solid materials such as pomace, hence the need for pretreatme nt of the wastewater, so the final proposal is designed as "pretreatment + UASB + SB R"。Because the water contains many skin debris, etc。, so the use of pre treatment to pr event damage to the subsequent process equipment, after pretreatment can make water SS was reduced by 75%, because the removal of solid material containing organic ma tter, while also reducing the water content of organic matter, can make the water BOD 5, cod reduced by 10% and 7%。 Anaerobic reaction can effectively remove the organi c matter content in the water, after UASB treatment can make the water quality indica tors COD=293mg/l, BOD5=189mg/l, the role of SS is very small can be ignored。 The anaerobic reaction after the wastewater still contains a certain amount of organic matt er, make good use of the oxygen reaction further processing, can make water quality i