化学除磷与MBR组合工艺处理玉米深加工废水的试验研究
发布时间：2019-05-09 13:04
【摘要】：玉米深加工行业耗水大、污染重,其生产过程会产生大量高浓度有机废水,末端治理难度很大,如处理处置不当排入水体,会造成严重的水体污染。在水资源日趋紧张及玉米深加工行业污染物排放标准趋严的形势下,做好玉米深加工废水处理与回用技术升级,实现废水资源化利用,是促进玉米深加工行业持续健康发展的关键。本文是以吉林省内某玉米开发有限公司作为依托,针对企业废水处理工艺技术升级存在的A/O工艺进水(EGSB出水)总磷较高、COD较低、C/N较低、污染物去除效果不稳定等问题,以企业EGSB出水引入部分EGSB进水(高浓度有机废水作为补充碳源)混合后作为试验原水,开展了化学除磷与A/O-MBR组合工艺处理玉米深加工废水的试验研究。本研究主要包括浸没式A/O-MBR试验装置的设计、制作与搭建及调式运行,化学除磷药剂及组合投加优化研究,A/O-MBR处理玉米深加工废水的效能研究,膜污染及其清洗技术研究等四个方面内容,旨在为依托企业的废水处理工艺技术升级改造提供技术支持。化学除磷药剂及组合投加优化研究表明,PAC、CaO组合顺序投加,总磷TP可获得稳定、预期的去除效果;试验原水TP浓度在75.3~86.0mg/L之间,PAC投加700mg/L、CaO投加600mg/L顺序投加时,总磷去除率达96.85%,出水的总磷含量稳定在2.46~2.85mg/L之间,pH在8.427~8.534之间,其处理后的水质满足后续生化处理工艺的运行需要,试验结果具有重复性。可见,化学除磷作为A/O-MBR工艺的预处理单元适用、可行。A/O-MBR工艺处理玉米深加工废水的效能试验研究表明,A/O-MBR系统对玉米深加工废水中污染物具有稳定的去除效果,运行十分稳定,系统出水中COD、NH_4~+-N、TN、SS和浊度优于《循环冷却水用再生水水质标准》(HG/T3923-2007)对水质的要求,同时满足《淀粉工业水污染物排放标准》(GB25461-2010)中的间排标准要求,其中COD、NH_4~+-N、SS和浊度等指标优于直排标准的要求。膜污染及其清洗技术试验研究表明,采用扫面电镜(SEM)等手段,分析了膜污染形成及污染组份,制定出了体外离线化学清洗的方案,清洗后膜通量可以恢复98%以上。综上所述,采用化学除磷与MBR组合工艺处理玉米深加工废水具有应用性和经济效益,可作为依托企业的废水处理工艺技术升级改造的工艺方案。
[Abstract]:The corn deep processing industry consumes a lot of water and pollutes heavily. A large number of high concentration organic wastewater will be produced in the production process, and the terminal treatment is very difficult. If the treatment and disposal is not properly discharged into the water body, it will cause serious water pollution. Under the situation of increasing shortage of water resources and stricter discharge standards of pollutants in corn deep processing industry, we should upgrade the treatment and reuse technology of corn deep processing wastewater and realize the utilization of wastewater resources. It is the key to promote the sustainable and healthy development of corn deep processing industry. Based on a corn development co., Ltd in Jilin Province, aiming at the upgrading of wastewater treatment process technology, the total phosphorus (EGSB effluent) of A / O process is higher, COD is lower, and C / N is lower. The removal effect of pollutants is unstable. The effluent of enterprise EGSB is mixed with part of EGSB influent (high concentration organic wastewater as supplementary carbon source) as the raw water of the experiment. An experimental study on the treatment of corn deep processing wastewater by chemical phosphorus removal and A/O-MBR combined process was carried out. This study mainly includes the design, manufacture and construction and adjustment operation of immersion A/O-MBR test device, the optimization of chemical phosphorus removal agents and combined addition, and the study on the efficiency of A/O-MBR in the treatment of corn deep processing wastewater. The purpose of this paper is to provide technical support for the upgrading and transformation of wastewater treatment technology in order to provide technical support for the upgrading and transformation of wastewater treatment technology. The optimization of chemical phosphorus removal agent and combination addition showed that the total phosphorus TP could be stable and the expected removal effect could be obtained by adding PAC,CaO in sequence. When the concentration of TP in raw water is between 75.3~86.0mg/L, the concentration of PAC is 700 mg 路L, the removal rate of total phosphorus is 96.85%, and the content of total phosphorus in effluent is stable between 2.46~2.85mg/L and Cao, the removal rate of total phosphorus is 96.85%. The pH is between 8.427 and 8.534. The treated water quality meets the operation needs of the subsequent biochemical treatment process, and the test results are repeatable. It can be seen that chemical phosphorus removal is suitable and feasible as the pretreatment unit of A/O-MBR process. The experimental study on the efficiency of A/O-MBR process in the treatment of corn deep processing wastewater shows that, The A/O-MBR system has a stable removal effect on pollutants in corn deep processing wastewater, and the operation is very stable. COD,NH_4~-N in the effluent of the system, COD,NH_4~, SS and turbidity are better than the Water quality Standard for Recycling cooling Water (HG/T3923-2007), and meet the requirements of discharge Standard for Water pollutants in starch Industry (GB25461-2010), in which COD,NH_4~-N, SS and turbidity are better than the requirements of direct discharge standard. The experimental study on membrane fouling and cleaning technology shows that the membrane fouling formation and fouling components are analyzed by scanning electron microscopy (SEM), and the off-line chemical cleaning scheme in vitro is worked out. The flux of membrane can be restored to more than 98% after cleaning. To sum up, the combined process of chemical phosphorus removal and MBR has application and economic benefits in the treatment of corn deep processing wastewater, which can be used as a process scheme for upgrading and reforming the wastewater treatment technology based on enterprises.
【学位授予单位】：长春工程学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X712
本文编号：2472788
[Abstract]:The corn deep processing industry consumes a lot of water and pollutes heavily. A large number of high concentration organic wastewater will be produced in the production process, and the terminal treatment is very difficult. If the treatment and disposal is not properly discharged into the water body, it will cause serious water pollution. Under the situation of increasing shortage of water resources and stricter discharge standards of pollutants in corn deep processing industry, we should upgrade the treatment and reuse technology of corn deep processing wastewater and realize the utilization of wastewater resources. It is the key to promote the sustainable and healthy development of corn deep processing industry. Based on a corn development co., Ltd in Jilin Province, aiming at the upgrading of wastewater treatment process technology, the total phosphorus (EGSB effluent) of A / O process is higher, COD is lower, and C / N is lower. The removal effect of pollutants is unstable. The effluent of enterprise EGSB is mixed with part of EGSB influent (high concentration organic wastewater as supplementary carbon source) as the raw water of the experiment. An experimental study on the treatment of corn deep processing wastewater by chemical phosphorus removal and A/O-MBR combined process was carried out. This study mainly includes the design, manufacture and construction and adjustment operation of immersion A/O-MBR test device, the optimization of chemical phosphorus removal agents and combined addition, and the study on the efficiency of A/O-MBR in the treatment of corn deep processing wastewater. The purpose of this paper is to provide technical support for the upgrading and transformation of wastewater treatment technology in order to provide technical support for the upgrading and transformation of wastewater treatment technology. The optimization of chemical phosphorus removal agent and combination addition showed that the total phosphorus TP could be stable and the expected removal effect could be obtained by adding PAC,CaO in sequence. When the concentration of TP in raw water is between 75.3~86.0mg/L, the concentration of PAC is 700 mg 路L, the removal rate of total phosphorus is 96.85%, and the content of total phosphorus in effluent is stable between 2.46~2.85mg/L and Cao, the removal rate of total phosphorus is 96.85%. The pH is between 8.427 and 8.534. The treated water quality meets the operation needs of the subsequent biochemical treatment process, and the test results are repeatable. It can be seen that chemical phosphorus removal is suitable and feasible as the pretreatment unit of A/O-MBR process. The experimental study on the efficiency of A/O-MBR process in the treatment of corn deep processing wastewater shows that, The A/O-MBR system has a stable removal effect on pollutants in corn deep processing wastewater, and the operation is very stable. COD,NH_4~-N in the effluent of the system, COD,NH_4~, SS and turbidity are better than the Water quality Standard for Recycling cooling Water (HG/T3923-2007), and meet the requirements of discharge Standard for Water pollutants in starch Industry (GB25461-2010), in which COD,NH_4~-N, SS and turbidity are better than the requirements of direct discharge standard. The experimental study on membrane fouling and cleaning technology shows that the membrane fouling formation and fouling components are analyzed by scanning electron microscopy (SEM), and the off-line chemical cleaning scheme in vitro is worked out. The flux of membrane can be restored to more than 98% after cleaning. To sum up, the combined process of chemical phosphorus removal and MBR has application and economic benefits in the treatment of corn deep processing wastewater, which can be used as a process scheme for upgrading and reforming the wastewater treatment technology based on enterprises.
【学位授予单位】：长春工程学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X712
【相似文献】
相关期刊论文 前10条
1 徐丰果,罗建中,凌定勋;废水化学除磷的现状与进展[J];工业水处理;2003年05期
2 詹凤平;江映翔;戴永年;;固定化活性氧化镧的化学除磷及其真空再生技术研究[J];江苏环境科技;2008年01期
3 刘宁;陈小光;崔彦召;柳建设;徐晓雪;;化学除磷工艺研究进展[J];化工进展;2012年07期
4 王红霞;康新立;王学师;;石灰、硫酸亚铁法前置化学除磷研究[J];能源与节能;2012年01期
5 陈秀容;;城镇污水处理辅以化学除磷的探讨[J];科协论坛(下半月);2012年06期
6 陈宇畅;;污水化学除磷影响因素探讨[J];黑龙江科技信息;2013年18期
7 马伟芳;郭浩;姜杰;韩冬梅;聂超;姚志军;;城市污水厂化学除磷精确控制技术研究与工程示范[J];中国给水排水;2014年05期
8 刘云根;江映翔;周平;;污水化学除磷技术的现状和进展[J];云南环境科学;2005年S1期
9 康晓丹;杨开;;化学除磷药剂的比较试验[J];山西建筑;2008年29期
10 ;《环境污染与防治》网络版论文摘要[J];环境污染与防治;2011年12期
相关会议论文 前2条
1 唐建国;林洁梅;;化学除磷的设计计算[A];第四届全国给水排水青年学术年会论文集[C];2000年
2 左梅梅;王华军;丁昭霞;;废水化学除磷的研究进展[A];2008中国环境科学学会学术年会优秀论文集（上卷）[C];2008年
相关重要报纸文章 前1条
1 文吉;科技助力城市污水处理[N];中国建设报;2012年
相关硕士学位论文 前10条
1 刘旭林;前置/同步化学除磷对A~2/O工艺除污染效能与活性污泥性能的影响研究[D];北京林业大学;2016年
2 赵鹤;化学除磷与MBR组合工艺处理玉米深加工废水的试验研究[D];长春工程学院;2017年
3 徐丰果;废水化学除磷的试验、理论与应用研究[D];广东工业大学;2003年
4 吴娅;曝气生物滤池化学除磷药剂的选择[D];哈尔滨工业大学;2010年
5 邱继彩;生活污水化学除磷试验研究[D];山东大学;2007年
6 侯艳玲;城市污水处理厂化学除磷工艺优化运行与控制系统研究[D];清华大学;2010年
7 李博夫;龙王嘴污水处理厂生物辅以化学除磷研究[D];武汉理工大学;2013年
8 徐强;小城镇污水旁侧化学除磷-SBR工艺强化除磷中试研究[D];浙江大学;2013年
9 王俊;BAF处理效能及化学除磷试验研究[D];河北工程大学;2010年
10 马艳娜;化学除磷强化A~2/O工艺脱氮除磷试验研究[D];郑州大学;2013年
，本文编号：2472788
本文链接：https://www.wllwen.com/kejilunwen/nykj/2472788.html
