前沿关注 进展:美国全面启动短程反硝化[PnDN]-Anammox示范项目 [复制链接]

2169 0
京东
本项目题目“When a Detour Becomes a Shortcut: Going Full-scale with Partial Denitrification/Anammox as an Alternative Strategy for Mainstream Deammonification and Incorporating Biological Phosphorus Removal”,Project Amount999,670;项目实施周期是2020年9月至2023年8月31号,3周年时间。# \8 P) b/ @1 ]  p4 _9 S+ T  I
3 U, N9 i% |- Q( Q. G  e
课题具体目标是通过提高厌氧氨氧化细菌(Anammox)在主流系统中的亚硝酸盐利用率,为快速去除氮过程的全面应用铺平道路。
& O* t  v! Q$ ~, B* s7 Q$ A
0 I/ q6 L* b( _/ j" F基于部分反硝化(PDN)路线,不是通过洗出NOB(亚硝酸盐氧化细菌)的技术路径(传统短程硝化路径),而是通过PnDN过程将可能提供更可靠的亚硝酸盐来源,PnDN-Anammox技术路线可能是更有利于生产尺度上加速自养脱氮的实施和推进。0 Z; o; A. K7 x3 x  ?& l
+ k+ r1 ]( c5 A1 p- g7 O8 x* |
环保之家0.JPG + F& [# |+ p3 x9 M, O( S" u

% e. S, y, s/ W6 G5 q, G
4 C( K* K$ K$ R1 d) k# u/ ^Description:/ |: a* ~% K9 n

" [" ^9 w, u$ GNutrient management and removal technologies currently in use at point sources, such as wastewater treatment plants, are mainly biological (for nitrogen (N) and phosphorus (P) removal) or a combination of biological and chemical (for P removal) processes that have been used since the early 1970s. In recent years, research has been focused on alternative N removal strategies that can reduce capital, chemical, and energy costs. Mainstream shortcut N removal and mainstream deammonification processes represent a paradigm shift for the industry, offering the opportunity for sustainable N removal, energy neutral or even energy positive facilities and dramatic reductions in treatment costs, which has widespread environmental benefits in reducing the formation of HABs. But full-scale implementation has met with limited success.   ]# S2 H0 @! s/ t# G
' }3 v7 {- [) r& I1 u! H
Objective:      ) ]1 }& |* b; h! j4 r+ u
% c0 ~  T. E3 q/ Z, g
The specific objective of this project is to pave the way for full-scale applications of shortcut N removal processes, by increasing nitrite availability for anaerobic ammonium oxidizing bacteria (anammox) in mainstream systems. Shortcut N removal systems developed based on the partial denitrification (PdN) route rather than the NOB (nitrite oxidizing bacteria) out-selection route, will likely provide more reliable nitrite production and could accelerate full-scale implementation of shortcut N technologies.   
" m0 \/ L, {9 w; O& k  |" W$ C
" b4 p. C  f3 A  U! V: bPartial denitrification/anammox (PdNA) technologies span a range of readiness levels. The attached growth polishing PdNA concepts that will be explored further in this project have already been partially validated in pilot testing and full-scale treatment plants. HRSD transitioned their York River Treatment Plant post-dentification filters to PdNA almost two years ago, the first real full-scale example of mainstream anammox oxidizing a relevant amount of the influent ammonia load. Based on the successful outcome of piloting PdNA in a polishing moving bed biofilm reactor (MBBR) process, the pending full-scale nutrient upgrade for the HRSD James River plant will include this technology. This project will address remaining unknowns with designing and operating polishing PdNA processes.        
+ F  `0 p& X& n3 P0 h
& i4 ]1 y6 l+ o1 J5 l! SIntegrated PdNA applications, whereby anammox are incorporated into the main plant BNR process pre- or post-anoxic zones, have been validated conceptually in laboratory and pilot studies at DC Water and Columbia University, and this project will move these concepts rapidly to full-scale application. This project will also evaluate the integration of biological P removal with PdNA shortcut N removal.& A2 C1 }$ Y) V* w2 |  q7 L/ A; n& Q: x# z
: R& D7 _( g/ c

© 声明:本文仅表作者或发布者个人观点,与环保之家[2TECH.CN]无关。其原创性及陈述文字、内容、数据及图片均未经证实,对本文及其全部或部分内容、图片、文字的真实性、完整性、及时性本站不作任何保证或承诺,仅做参考并自行核实。如有侵权,请联系我们处理,在此深表歉意。

举报 使用道具 回复

您需要登录后才可以回帖 登录 | 中文注册

本版积分规则

更多

客服中心

2121-416-824 周一至周五10:30-16:30
快速回复 返回顶部 返回列表
现在加入我们,拥有环保之家一站式通行证!马上 中文注册 账号登陆