MA Xiao-wei,AN Hao-dong,ZHU Le-hui,et al.Project Case of Gas Washing Wastewater Treatment of Waste Plastic Granulation[J].China Water & Wastewater,2021,37(2):90-93.
废塑料造粒洗气废水处理工程实例
- Title:
- Project Case of Gas Washing Wastewater Treatment of Waste Plastic Granulation
- Keywords:
- gas washing wastewater from plastic granulation; air floatation; Fenton; UASB; biological contact oxidation
- 摘要:
- 废塑料造粒生产过程中的废气采用水吸收作为预处理，会产生高浓度难降解有机废水。先通过气浮去除水中浮油、悬浮物，再经过Fenton氧化预处理，提高其可生化性，然后采用UASB+接触氧化工艺处理，最后用次氯酸钠去除部分氨氮，其出水水质达到所在工业园区污水厂纳管标准（COD≤350 mg/L、NH3-N≤50 mg/L、甲苯≤0.2 mg/L）。工程调试运行结果显示，COD、NH3-N和甲苯平均去除率分别达96.1%、89.9%、99.8%，在技术上和经济上是可行的。
- Abstract:
- The waste gas in the process of waste plastic granulation uses water absorption as pretreatment, which will produce high concentration of refractory organic wastewater. First, the floating oil and suspended solids in the water are removed by air flotation, next they are pretreated by Fenton oxidation to improve their biochemical performance, then they are treated by UASB and contact oxidation process, and finally part of ammonia nitrogen is removed by sodium hypochlorite. The effluent quality reaches the receiving standard of the sewage plant in the industrial park, i.e. COD≤350 mg/L, NH3-N≤50 mg/L, methylbenzene≤0.2 mg/L. The results of project commissioning show that the average removal rates of COD, NH3-N and methylbenzene are 96.1%, 89.9% and 99.8% respectively, which is feasible in technology and economy.
相似文献/References:
[1]郭春辉,邱立平,王广伟,等.生物活性炭循环床/气浮组合工艺处理高氨氮原水[J].中国给水排水,2020,36(17):85.
GUO Chun-hui,QIU Li-ping,WANG Guang-wei,et al.Treatment of High Ammonia Nitrogen Raw Water Treatment by a Pilot-scale Air Flotation and Enhanced Biological Treatment Process[J].China Water & Wastewater,2020,36(2):85.
[2]潘国强,邓亮.气浮-陶瓷膜耦合工艺处理炼油厂含油废水[J].中国给水排水,2020,36(18):118.
PAN Guo-qiang,DENG Liang.Oily Wastewater Treatment by a Coupling Process of Air Floatation and Ceramic Membrane[J].China Water & Wastewater,2020,36(2):118.
[3]杨墨,刘毛,邓涛,等.混凝—气浮—过滤深度处理A2O工艺二沉池出水[J].中国给水排水,2020,36(19):89.
YANG Mo,LIU Mao,DENG Tao,et al.Advanced Treatment of Effluent from Secondary Sedimentation Tank of A2O Process by Coagulation–Dissolved Air Flotation–Filtration[J].China Water & Wastewater,2020,36(2):89.
[4]赵志太,李建,孔晓光,等.新型气浮设备去除污水厂二沉池出水TP和SS中试[J].中国给水排水,2022,38(9):18.
ZHAOZhi-tai,LIJian,KONGXiao-guang,et al.Removal of TP and SS from Effluent of Secondary Sedimentation Tank with Novel Air Flotation Equipment[J].China Water & Wastewater,2022,38(2):18.
[5]金鑫,魏一雄,刘梦稳,等.气浮工艺中气载絮体尺寸分布及其浮力效率研究[J].中国给水排水,2024,40(5):37.
JINXin,WEIYi-xiong,LIUMeng-wen,et al.Size Distribution and Buoyancy Efficiency of Microbubble?flocs in Dissolved Air Flotation Process[J].China Water & Wastewater,2024,40(2):37.