3000吨每日高浓度生物废水UASB工艺设计.docVIP

设计总说明 在化工、制药、食品等行业生产中，经常排放出大量含氨基酸的发酵废水，这种废水呈酸性，若排入江河，会使水体的自净能力降低，容易引起水体富营养化，严重污染环境。 本设计要求处理肇庆某生物工程基地3000吨/日的氨基酸发酵废水。进水水质为BOD5：2000mg/L，CODcr：3000mg/L， SS：800mg/L， 氨氮：30mg/L，磷酸盐：10mg/L。出水水质达到《广东省地方标准—水污染物排放限值》（DB44/26-2001）二时段一级标准的要求。具体出水指标为：BOD5≤20mg/L， CODcr≤60mg/L，SS：60mg/L，TN≤10mg/L，TP≤0.5mg/L。 通针对氨基酸发酵废水高COD、高BOD、以及具有酸性、氨氮含量高等特点，在参照了国内外运用各种工艺处理氨基酸发酵废水成功经验的基础上，本设计采取了最经典而更先进有效的厌氧—好氧工艺：UASB+CASS组合工艺。该工艺具有污水处理效率高，运行能耗低，生物脱氮除磷效果好、除COD、BOD效率高的优点。基本工艺流程为：隔栅→调节池→集水池→UASB反应池→配水井→CASS反应池→出水本设计的主要出水指标经过处理后全部达到排放标准的要求并排放。工程总投资为469.7万元，每年的总运行费用为187.52万元，每吨水的运行费用是1.71元/天。 关键词：氨基酸发酵废水，氨氮，UASB、CASS Design General Information In pharmaceutical, chemical, such as food industry, a large volume of the drainage of sewage containing amino acid , this water make the liquid be acid and the liquids Self-purification capacity is reduce，the growth of microorganisms in water is Hampered， the environment is Serious polluted. The design of a bio-engineering center handling Zhaoqing 3,000 tons / day of amino acid fermentation wastewater. Influent water quality for the BOD5: 2000mg / L, CODcr: 3000mg / L, SS: 800mg / L, ammonia: 30mg / L, phosphate: 10mg / L. Effluent quality to provincial standard - water pollution discharge limits (DB44/26-2001) two times the first standard. The emission standards are: BOD5 ≤ 20mg / L, CODcr ≤ 60mg / L, SS: 60mg / L, TN ≤ 10mg / L, TP ≤ 0.5mg / L. The amino acid fermentation wastewater is high COD, high BOD, as well as with acid, ammonia content higher characteristic, in the light of domestic and foreign use of various amino acid fermentation Process Based on the successful experience of waste water treatment, this design took the most classic and more advanced and efficient anaerobic - aerobic process: UASB + CASS combined process. The sewage treatm