A2O設施處理長三角平原地區(qū)農(nóng)村生活污水的效果
- Title:
- Performance of A2O Facilities for Rural Domestic Sewage Treatment in Yangtze River Delta Plain
- Keywords:
- font-size: 10pt; ">anaerobic-anoxic-oxic (A font-size: 10pt; "> 2 O); rural domestic sewage; nitrogen and phosphorus removal; Yangtze River Delta plain
- 摘要:
-
厭氧/缺氧/好氧（A2O）設施在長三角平原地區(qū)農(nóng)村生活污水處理中應用廣泛，此次調(diào)研了5個鎮(zhèn)39個A2O設施對污染物的去除效果和進水量。結(jié)果表明，A2O設施進水COD、氨氮、TN、TP的濃度分別為（95±80）、（56.2±40.0）、（61.6±40.1）、（4.6±2.8） mg/L，部分設施進水濃度較低，說明污水收集有問題。由于進水量不穩(wěn)定，A2O設施受降雨量影響很大，與設計規(guī)模有較大偏差。A2O設施對COD、氨氮、TN、TP的去除率分別為(46.9±30.5)%、(46.0±37.3)%、(19.7±18.7)%和(25.1±21.9)%，各設施之間對污染物的去除情況差別很大，出水COD達標率較高，但氮、磷達標率較低。進水COD濃度低引起的有機負荷與進水COD/TN值偏低、雨污分流不徹底引起的較大水力沖擊負荷、進水水質(zhì)水量波動大、設施運維工作不到位引起的生物脫氮除磷效果不佳，是A2O設施應用效果不理想的重要原因。
- Abstract:
-
Anaerobic-anoxic-oxic (A2O) facilities are widely applied in rural domestic sewage treatment in the Yangtze River Delta plain. Pollutants removal performance and influent flow rate of 39 A2O facilities in five towns were investigated. The influent concentrations of COD, ammonia nitrogen (NH 3 -N),total nitrogen (TN)and total phosphorus (TP) were (95±80) mg/L,(56.2±40.0) mg/L,(61.6±40.1) mg/L and (4.6±2.8) mg/L, respectively. The very low influent concentration in some facilities indicated that there was a problem in sewage collection. Due to the unstable influent flow rate, the A2O facilities were greatly affected by rainfall and deviated from the design capacity.The removal rates of COD, NH3-N, TN and TP by the A2O facilities were (46.9±30.5)%, (46.0±37.3)%, (19.7±18.7)% and (25.1±21.9)%, respectively,and the removal performances varied greatly among facilities. The standard achieving rate of effluent COD was high, but those of effluent nitrogen and phosphorus were low. Important reasons for the poor performance of the facilities were as follows: the too low organic load and influent COD/TN ratio caused by the low concentration of influent COD, high shocking load caused by incomplete diversion of rain and sewage, dramatic fluctuation in quality and quantity of the influent, as well as poor biological removal of nitrogen and phosphorus caused by inadequate operation and maintenance of the facilities.
相似文獻/References:
[1]孫永利,張維,鄭興燦,等.城鎮(zhèn)居民人均日生活污水污染物產(chǎn)生量測算之產(chǎn)污規(guī)律[J].中國給水排水,2020,36(6):1.
[2]范榮桂,劉娜,尹利鵬,等.污泥厭氧催化快速發(fā)酵產(chǎn)VFAs的試驗研究[J].中國給水排水,2020,36(11):69.
[3]鎮(zhèn)祥華,余琴芳,萬年紅,等.污水處理廠二級出水深床濾池超深度脫氮研究[J].中國給水排水,2020,36(11):91.
[4]趙美玲,朱濤,馮江,等.水力模型在合流制調(diào)蓄池進水管改造中的應用[J].中國給水排水,2020,36(7):114.
[5]朱一文,王文亮.基于水文方法的暴雨調(diào)節(jié)塘規(guī)模計算[J].中國給水排水,2020,36(7):118.
[6]李駿飛,李歡,楊磊三.粵港澳大灣區(qū)創(chuàng)新治水模式分享[J].中國給水排水,2020,36(8):1.
[7]李激,王燕,熊紅松,等.城鎮(zhèn)污水處理廠消毒設施運行調(diào)研與優(yōu)化策略[J].中國給水排水,2020,36(8):7.
[8]趙錫鋒,李興強,李軍.好氧顆粒污泥技術中試研究及應用進展[J].中國給水排水,2020,36(8):30.
[9]王建西.PTA2O工藝用于養(yǎng)豬廢水處理及其Anammox現(xiàn)象分析[J].中國給水排水,2020,36(8):56.
[10]高海英,鄧磊,侯曉慶,等.MBR工藝在西安經(jīng)開草灘污水處理廠中的應用[J].中國給水排水,2020,36(8):63.
[11]莫俊鋒,王文亮,白獻宇,等.基于設計暴雨法的CSO調(diào)蓄池池容計算方法探討[J].中國給水排水,2020,36(8):77.
[12]郭健.納入大直徑熱力管的綜合管廊設計研究[J].中國給水排水,2020,36(8):82.
[13]蒙政成,冼萍,黃付平,等.NCMBR工藝在工業(yè)園區(qū)污水處理工程中的應用[J].中國給水排水,2020,36(8):88.
