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污水变清流,老厂焕新颜!深圳最早的水质净化厂,藏着什么黑科技?

  • 2026-07-12 04:50:09
污水变清流,老厂焕新颜!深圳最早的水质净化厂,藏着什么黑科技?

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清晨,深圳河在福田区滨河大道旁静静流淌。河岸边,绿植环绕的厂区内,构筑物方正排列,设备管道整齐划一,没有刺鼻异味,只有设备低鸣、水流轻响——这里便是深圳滨河水质净化厂,一座“藏”在市中心、日处理能力30万吨的水质净化厂,通过分阶段提标扩建,向50万吨级“超级水质净化厂”迈进。

来到深圳滨河水质净化厂

与其说走进“厂区”

更像走进一座精密运转的工业园区

来自福田、罗湖

超过150万居民的生活污水

在这里完成一场“激浊扬清”的蜕变

最终化作一泓清水汇入深圳河

这座始建于1983年的老水厂,是深圳第一座水质净化厂。2024年,它完成了一次“脱胎换骨”提标扩建同步进行的大升级:在不增加用地的情况下,污水处理规模从30万吨/日跃升至50万吨/日,出水标准从国家一级A标提升至更严格的深圳地方B标——处理后的污水,可直接排入深圳河。

是什么让这座“老厂”焕发新生?

答案是名为AOA的污水处理新技术。

从“AAO”到“AOA”:字母之变,机理之变

说起污水处理,常见的有AAO、AO、SBR、氧化沟等工艺。其中,业内最熟悉的莫过于AAO工艺(厌氧-缺氧-好氧),国内50%以上的城镇污水处理厂采用这种方式。但AAO传统工艺中,反硝化菌与聚磷菌在厌氧段争抢有限碳源——“僧多粥少”,脱氮除磷效率大打折扣,而过长的好氧段则无谓消耗进水中本就不多的碳源。为了达标,许多水厂不得不投加乙酸钠等外加碳源,或建设反硝化滤池进一步脱氮,导致建设和运行成本高、碳排放大。

AOA工艺的出现,彻底改写了这一局面。

AOA技术及应用由深圳环境水务集团与北京工业大学共同完成。与AAO“厌氧→缺氧→好氧”的工序不同,AOA工艺将“缺氧”段挪到了最后,形成“厌氧储碳—好氧控碳—缺氧用碳”全流程的稳态定向控制。这个看似简单的调整,背后却是污水处理原理的深层变革:

  • 厌氧段——“多吃不动(存粮)” :微生物趁着外部碳源充足,大量“吃”进有机物,将其转化为内碳源,只存不用,做成“压缩饼干”贮存起来。

  • 好氧段——“少吃不花(节粮)” :外部碳源逐渐减少,微生物以较低速率代谢,完成硝化和吸磷的同时,尽量不消耗体内储存物,为后续反硝化“省着花”。

  • 缺氧段——“不吃猛干(啃粮)” :外部碳源耗尽,微生物靠“啃老本”——全力消耗体内储存物作为电子供体,将硝酸盐还原为氮气,完成高效脱氮。

四大变革,直击传统工艺痛点

与传统AAO工艺相比,AOA带来的改变是全方位的:

1. 碳源利用率大幅提升。 AOA将“抢粮”变为“存粮”,厌氧段微生物将碳源转化为胞内储存物,缺氧段靠“啃老本”反硝化脱氮,无需外加碳源。研究数据显示,AOA工艺总氮去除率可达85%以上,脱氮效率可比AAO高10-20%。

2. 能耗显著降低。传统AAO需要污泥回流和硝化液回流“内外回流”,能耗高;AOA无需硝化液回流,好氧停留时间缩短25%–50%,曝气能耗有效降低。

3. 污泥产量减少。 由于碳源利用路径优化,AOA工艺污泥产量较传统工艺减少10%–15%,后续污泥处理处置成本随之下降,整条处理链更加经济高效。

4. 高品质出水,低温适应性强。 出水品质更优,脱氮除磷协同性强,可大幅削减化学除磷药剂。中试数据显示,即便温度低至15℃以下,仍能保证脱氮效率远高于AAO工艺,展现了良好的低温适应性。

AOA让微生物学会“存粮过冬”,在不外加碳源的前提下实现极限脱氮——省钱、降碳、稳达标。深圳滨河水质净化厂调试运行期间,出水总氮浓度稳定低于2.0 mg/L,远优于设计标准。

AOA技术鉴定:国际领先

AOA历经5年、十余套百吨级中试研究,已形成完整成果体系,累计获授权发明专利42项(含3项PCT国际专利),发表学术论文68篇,其中在Nature Index期刊上发表论文18篇。

作为一项颠覆性污水深度脱氮除磷技术,AOA技术的创新价值也获得权威认可。近日,由中国城镇供水排水协会组织的“厌氧-好氧-缺氧(AOA)高效低碳极限脱氮协同除磷技术”科技成果评价会在北京召开。侯立安、任南琪、马军、曹宏斌、汪华林5位中国工程院院士及李树苑、李艺2位全国工程勘察设计大师组成评审专家组。经综合评定,专家组一致认定该技术属国内外首创,整体达到国际领先水平。

从一项工艺机理到一套技术体系,AOA走向全国

AOA的价值,不止于一座污水厂。

目前,该技术已在全国28座污水处理厂落地应用,整体处理规模超200万吨/日。除深圳滨河项目外,深圳福田水质净化厂、常州江边污水处理厂等重点项目运行稳定,经济、社会与生态效益显著。

AOA技术落地项目分布

在“双碳”战略深入推进的背景下,污水处理行业正面临低碳转型的迫切需求。AOA以“无外加碳源极限脱氮与“协同除磷”为核心突破,同步实现碳排放与运维成本双下降,为行业提供了一条可复制、可推广的技术路径。

随着技术成果的持续转化与规模化推广

这项饱含深圳基因的“黑科技”

有望在更多城市的水质净化厂落地生根

为全国污水处理

低碳化、智能化、精细化

发展注入强劲动力

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  1. CONNECT:[ UseTime:0.000567s ] mysql:host=127.0.0.1;port=3306;dbname=c460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000739s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000286s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000273s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000494s ]
  6. SELECT * FROM `set` [ RunTime:0.000248s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000554s ]
  8. SELECT * FROM `article` WHERE `id` = 628325 LIMIT 1 [ RunTime:0.000460s ]
  9. UPDATE `article` SET `lasttime` = 1783816457 WHERE `id` = 628325 [ RunTime:0.001354s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000260s ]
  11. SELECT * FROM `article` WHERE `id` < 628325 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000448s ]
  12. SELECT * FROM `article` WHERE `id` > 628325 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001805s ]
  13. SELECT * FROM `article` WHERE `id` < 628325 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000759s ]
  14. SELECT * FROM `article` WHERE `id` < 628325 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.020830s ]
  15. SELECT * FROM `article` WHERE `id` < 628325 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.017877s ]
0.115085s