Experimental Study on Blowdown Performance of New Type of Rotatable Plate Screen Filter

doi:10.3901/JME.2019.24.253

Abstract

Abstract: The discharge performance of the screen filter determines the water consumption in the discharge process of the filter and the working efficiency in the next work cycle. Based on the analysis of the discharge performance of the screen filter, it is found that the sewage discharge flow and the sediment content of the inlet water are the important influencing factors. For exploring screen filter drainage effect, the focus of the experiment was on the relationship of sewage discharge cleanliness, sewage discharge time, sewage discharge flow and sediment content of a new type of rotatable plate screen filter.The results show that:the best default under differential pressure and sewage discharge flow is the core of the rotatable plate net filter factors, with the increase of sewage discharge flow, sewage discharge time reduces, sewage discharge cleanliness increases, blow down effect is remarkable. At the same time, according to the law of mass conservation, the mathematical models of sewage discharge time and sewage discharge flow, sewage discharge cleanliness and sewage discharge flow were established. According to the test results, the results show that the fitting correlation coefficient r between the calculated results and the test results can reach above 0.98.In order to ensure that the filter can achieve high efficiency in the case of low discharge water consumption, it is recommended to set the sewage discharge flow as 180 m³/h and the sewage discharge time as 50 s in actual work to achieve 98% of the sewage discharge cleanliness.

Key words: rotatable plate screen filter, sewage discharge time, sewage discharge cleanliness, sewage discharge flow, effect of sewage

CLC Number:

S275

SHI Kai, LIU Zhenji, MENG Dinghua, ZONG Quanli, LI Man. Experimental Study on Blowdown Performance of New Type of Rotatable Plate Screen Filter[J]. Journal of Mechanical Engineering, 2019, 55(24): 253-259.

References

[1] 周生祥. 滴灌工程在新疆农田水利灌溉系统中的应用探讨[J]. 城市建设理论研究, 2017(11):177. ZHOU. Shengxiang. Discussion on the application of drip irrigation project in xinjiang farmland water conservancy Irrigation system[J]. Urban Construction Theory Research, 2017(11):177.
[2] 马辰. 滴灌技术的发展现状与趋势[J]. 吉林农业, 2018(6):77. MA Chen. Development status and trend of drip irrigation technology[J]. Jilin Nongye, 2018(06):77.
[3] 薛世柱. 新疆节水滴灌存在问题简析[J]. 吉林农业, 2017(4):84. XUE Shizhu. Analysis on problems of water-saving drip irrigation in xinjiang[J]. Jilin Nongye, 2017(4):84.
[4] 陈林. 新疆节水灌溉发展现状、面临问题及建议[J]. 新疆农垦科技, 2016, 39(6):62-64. CHEN Lin. Development status, problems and suggestions of water-saving irrigation in xinjiang[J]. Xinjiang Farm Research of Science and Technology, 2016, 39(6):62-64.
[5] 赖先齐,王江丽,程莲,等. 亚洲中部干旱区主要绿洲滴灌技术适宜性分析[J]. 干旱区资源与环境, 2018, 32(12):104-109. LAI Xianqi, WANG Jiangli, CHENG Lian, et al. Analysis on the suitability of drip irrigation technology in main oases of central Asia[J]. Journal of Arid Land Resources and Environment, 2018, 32(12):104-109.
[6] 陈杰. 新疆农业高效节水农民参与式管理模式研究[D]. 乌鲁木齐:新疆农业大学, 2013. CHEN Jie. Study on the participatory management and model of xinjiang agricultural efficient water-saving farmers[D]. Urumqi:Xinjiang Agricultural University, 2013.
[7] 刘军. 新疆干旱区农业节水示范技术集成模式综合效果评价研究[D]. 乌鲁木齐:新疆农业大学, 2013. LIU Jun. Study on comprehensive effect evaluation of integrated model of agricultural water-saving demonstration technology in arid areas of xinjiang[D]. Urumqi:Xinjiang Agricultural University, 2013.
[8] 刘军. 新疆农业高效节水灌溉技术长效利用研究[D]. 乌鲁木齐:新疆农业大学, 2016. LIU Jun. Study on long-term utilization of xinjiang agricultural efficient water-saving irrigation technology[D]. Urumqi:Xinjiang Agricultural University, 2016.
[9] SIRIWARDENEA, DELETICN R T D. Clogging of storm water gravel infiltration systems and filters Insights from a laboratory study[J]. Water Research, 2007(41):1433-1440.
[10] 杨晓军,刘焕芳,刘洋. 几种微灌用过滤器的工作性能分析及其应用条件研究[J]. 安徽农业科学, 2011, 39(26):16405-16406, 16414. YANG Xiaojun, LIU Huanfang, LIU Yang. Performance analysis and application conditions of several kinds of micro irrigation filters[J]. Anhui Agricultural Science, 2011, 39(26):16405-16406, 16414.
[11] 宗全利,刘焕芳,郑铁刚,等. 微灌用网式新型自清洗过滤器的设计与试验研究[J]. 灌溉排水学报, 2010, 29(1):78-82. ZONG Quanli, LIU Huanfang, ZHENG Tiegang, et al. The design and experimental study on new net self-cleaning filter for micro-irrigation[J]. Journal of Irrigation and Drainage, 2010, 29(1):78-82.
[12] 张文正,翟国亮,吕谋超,等. 微灌条件下三种过滤器过滤效果试验研究[J]. 灌溉排水学报, 2017, 36(4):88-93. ZHANG Wenzheng, ZHAI Guoliang, LU Mouchao, et al. Experimental study on the efficacy of sand filter, screen filter and disc filter for removing silts from the Yellow River water for micro-irrigation[J]. Journal of Irrigation and Drainage, 2017, 36(4):88-93.
[13] 葛宇川,刘贞姬,贾旺,等. 浅述新疆地区几种微灌用过滤器研究[J]. 中国建材科技, 2017, 26(3):135-138. GE Yuchuan, LIU Zhenji, JIA Wang, et al. Review of several kinds of filters for micro-irrigation in xinjiang region[J]. China Building Materials Science & Technology, 2017, 26(3):135-138.
[14] 张晓光,郑荫林,姜春波. 国内外自动清洗过滤器的发展及应用[J]. 丹东纺专学报, 2002(3):28-29. ZHANG Xiaoguang, ZHEN Yinlin, JIANG Chunbo. Domestic and overseas development &application of auto cleaned filter[J]. Journal of Dandong Textile College, 2002(3):28-29.
[15] 刘飞,刘焕芳,宗全利,等. 自清洗网式过滤器水头损失和排污时间研究[J]. 农业机械学报, 2013, 44(5):127-134. LIU Fei, LIU Huanfang, ZONG Quanli, et al. Experiment on head loss and discharge time of self-cleaning screen filter[J]. Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(5):127-134.
[16] 李强强,宗全利,刘贞姬,等. 卧式自清洗网式排污时间试验及计算[J]. 排灌机械学报, 2014, 32(12):1098-1104. LI Qiangqiang, ZONG Quanli, LIU Zhenji, et al. Experiment and calculation of discharge time for horizontal type self-cleaning screen filter[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(12):1098-1104.
[17] 宋剑鹏. 自清洗网式过滤器最佳排污时间试验研究[J]. 人民黄河, 2017, 39(3):145-148. SONG Jianpeng. Study on the optimal drainage time of the self-cleaning screen filter[J]. Yellow River, 2017, 39(3):145-148.
[18] NIETO P J, GONZALO E G, ARBAT G, et al. Pressure drop modelling in sand filters in micro-irrigation using gradient boosted regression trees[J]. Biosystems Engineering, 2018, 171:41-51.
[19] 王柏林,刘焕芳,刘贞姬,等. 旋流网式组合型过滤器过滤性能研究[J]. 中国农村水利水电, 2017(9):1-4, 9. WANG Bolin, LIU Huanfang, LIU Zhenji, et al. Experimental research on the filter performance of swirl-and-screen type combined filter[J]. China Rural Water and Hydropower, 2017(9):1-4, 9.
[20] 秦天云, 王文娥. 滴灌系统网式和叠片式过滤器水力性能试验研究[J]. 灌溉排水学报, 2017, 36(1):57-62. QIN Tianyun, WANG Wen'e. Hydraulic performance of screen and disc filters for drip irrigation[J]. Journal of Irrigation and Drainage, 2017, 36(1):57-62.
[21] 秦天云. 滴灌系统网式与叠片式过滤器工作性能及影响因素研究[D]. 杨凌:西北农林科技大学, 2017. QIN Tianyun. Study on the working performance and influencing factors of net and laminated filters in drip irrigation system[D]. Yangling:Northwest Agriculture and Forestry University, 2017.
[22] 刘清珺,陈婷,陈舜琮,等. 正态分布积分近似计算公式及其在实验结果判定中应用[J]. 现代测量与实验室管理, 2009(3):21-23. LIU Qingjun, CHEN Ting, CHEN Shuncong, et al. Approximate calculation formula of the normal distribution integral and its application in the determination of experimental results[J]. Modern Measurement and Laboratory Management, 2009(3):21-23.