设计总说明茶多酚是一种理想的食品天然抗氧化剂,具有抗癌治病、防衰老、防辐射、消除人体自由基等多种生理功效,广泛用于食品、油脂、医药、化工等行业.近年来,对于茶多酚的提取方法多见于报道。论文以茶多酚生产废水为研究对象，针对该废水有机物浓度高，含生物毒性物质和含盐量高等特点提出了预处理水解酸化SBR后处理的组合工艺.投加聚铝对混合废水进行预处理，CODcr和茶多酚的去除率都非常的高.由于该废水中所含大都为天然物质,该工艺是废水通过水解酸化池后，提高废水的可生化性. 由于该废水中所含大都为天然物质，其分子质量较大，而采用水解酸化可使水中的高分子物质在产酸菌的作用下分解为小分子，减少好氧处理的负荷，同时在厌氧条件下也可使废水中残留的茶多酚得到部分降解。在预处理阶段对茶多酚的去除是否完全对于废水处理的效果是至关重要的。但是在预处理阶段很难将茶多酚去除完全，而好氧对茶多酚基本没有降解作用，虽然水解酸化对茶多酚的降解率很低，但为了尽可能地降低茶多酚的浓度和减小出水的色度，水解酸化池应采用较长的停留时间。因为SBR法的处理设施十分简单，管理非常方便去除有机物效率很高,基建费用明显低于常规活性污泥法,所以本工艺采用SBR法, 废水中的COD和BOD主要是在SBR池中去除. 茶多酚废水经预处理和生化处理后水质得到了明显改善，但出水仍然不能达标，尤其是色度较大,所以可采用混凝沉淀进行后处理,混凝沉淀试验采用聚合铝作混凝剂，有关试验结果表明，对厌氧24h、好氧生化12h的出水进行混凝沉淀处理，最佳投药量为80mg/L，沉淀1.0h后COD可降到80mg/L，出水色度50倍，出水清澈透明，完全达到该地区的废水排放标准。关键字: 茶多酚,抗氧化剂,预处理,水解酸化,SBR法 ABSTRACTTea polyphenols is an ideal natural foods anti - oxidant, which has many physiological functions such as anticancer and treating disease, anti - aging, radiation protection and eliminating human body free radical, etc, and has been widely used in foods, fats, medicine and chemical industry. The extrdction of tea polyphenols has been reported much for the past few years。Tea Polyphenols(TP)production wastewater is characterized by high CODcr,high salinity,bio-toxicity,etc. a three-stage treatment process is proposed including pretreatment,anaerobic hydrolysis and SBR,and post treatment.Adding polyaluminum chloride into the mixed wastewater,the removal efficiency of CODcr and TP is very efficiency .In this process, first, the wastewater runs through the hydrolysis acidification pool, there is stuffing. so that the BOD5/CODcr can be increased. As the wastewater contained mostly natural substances, so they have larger molecular weight, hydrolysis and acidification of the water can polymer substances in the acid-producing bacteria to decompose under small molecules, reduce the load of aerobic treatment, while under anaerobic conditions can also enable the wastewater residual TP partial degraded. In preprocessing stage,the TP removed entirely, so the wastewater treatment effect is essential. But the pretreatment stage it is difficult to completely remove TP, TP and aerobic basic right without degradation, Although acid hydrolysis of tea polyphenols, the degradation rate is very low, However, in order to reduce as much as possible ,the TP concentrated and decreased water color, hydrolysis acidification should adopt a longer duration. because the treatment facilities is very simple and very convenient management of highly efficient removal of organic matter, infrastructure costs significantly lower than conventional activated sludge process,so we choose the technology SBR, wastewater COD and BOD can mainly removed in the SBR pond. TP wastewater pretreatment and biochemical treatment has been markedly improved, but the water is still not fulfilled, especially larger color, Therefore available upon coagulation, flocculation tests used for the polymerization of aluminum coagulants, the test results show that right anaerobic 24 h, 12 h aerobic biochemical water for the coagulation treatment, the best dosage of 80 mg / L, Precipitation 1.0 h after COD can be reduced to 80 mg / L, water color50 times, the water is clear, fully meet the regions wastewater discharge standards. Key words: Tea polyphenols,anti oxidant,pretreatment,hydrolysis and acidification,SBR目 录1 概述12 设计资料22.1生产工艺及废水的来源22.2废水特点22.3 废水水量22.4废水水质23 设计依据及工艺选择33.1设计依据33.1.1设计思想33.1.2设计原则33.2污水处理工艺选择43.2.1废水的主要组成43.2.2 处理工艺的选择43.2.3 预处理43.2.4生化处理53.2.5 后处理53.2.6 中、小型城市污水处理厂的优选工艺63.2.7各设备的具体说明73.3各段去除率的估算84 污水处理构筑物的设计104.1调节池104.1.1设计说明104.1.2参数选择104.1.3设计计算104.2化学絮凝池124.2.1已知条件124.2.2.设计计算124.3 旋流式絮凝池134.3.1 .已知条件134.3.2.设计计算134.4异向斜流板沉淀池144.4.1 .已知条件144.4.2.设计计算154.5水解酸化池184.5.1 设计说明184.5.2参数选择194.5.3设计计算194.6 SBR工艺的设计计算224.6.1已知条件224.6.2主要参数选择224.6.3计算污泥量224.6.4其他参数234.6.5剩余污泥与排出264.6.6曝气设备选择294.6.7潜水射流曝气机选择304.7溶药池2314.7.1 .已知条件314.7.2.设计计算314.8 污泥浓缩池324.8.1设计说明324.8.2已知条件及参数选择334.8.3设计计算335 构建物设备一览表366 生化处理系统的总体布置396.1平面布置396.2高程布置396.2.1 高程布置原则396.2.2高程计算406.2.3 高程布置结果(参见附图2)407 投资估算417.1土建工程：（万元）417.2设备部分：（万元）417.3其它费用（万元）427.4总投资为：474.968万元42结论43参考文献44致谢451. 概 述茶多酚是茶叶中酚类及而其衍生物的总称，主要以儿茶素为主，是一种天然抗氧化剂。近几年，北京、上海、浙江、江苏、福建等一些发达省市先后建立了研究、开发、生产茶多酚基地，产品也相继问市，但概括起来说大多规模小、产量低。目前，国内生产规模和技术含量较高的有江苏无锡绿宝生物制品有限公司、海南群力药业有限公司、罗氏（上海）精细化工有限公司等。据报道，2002年全国生产茶多酚约400吨，全世界生产茶多酚约1600吨，比上年增长都在100以上，中国产量仅占世界产量的25，美英等少数发达国家产量相对较大，用量也大。根据掌握的资料，2002年生产的茶多酚全部销售一空。 茶多酚目前国内销售价格，根据其规格和质量不同，一般在500元公斤到1200元公斤之间，平均价格在50万元吨左右，国际市场价格约在7万美元吨一10万美元吨之间。同时茶多酚精品、茶多糖等产品也及具开发潜力，1公斤茶多酚精品中提取的儿茶素单体EGCG、ECG的价值超过10万美元。 目前全球年消耗量约为1600吨，其中美国约500吨，日本约400吨，西欧约400吨，其它地区和国家约300吨。按照历年的发展速度，茶多酚的年需要量都是成倍的增长，欧美、东南亚、南美等地区和国家的增长速度都相当快。未来几年，国内外茶多酚需求量将迅速攀升，全球茶多酚年需求量将达到6000吨以上。特别是中国的需求量增加将最快，预