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经开区坚决打好大气污染防治攻坚战 精准治气,推动空气质量“向优而行”

传统行业
资讯新闻 文章来源· 镇江日报

在镇江港务集团金港公司中央控制室,大屏幕上粉尘实时在线点位监测系统全时段开启,货场25个粉尘监测点位在屏幕上一览无余,点击任意一个监测点,TSP(总悬浮颗粒)、PM10及PM2.5等指标数值均清晰可见,雷达粉尘在线云处理系统高效运行,当数值超过警戒线时雷达监测系统便会与喷淋系统实现智慧在线联动,开启点位附近喷淋抑制粉尘。

走近港区现场,卸船机通过抓斗将货物放至下料斗(见图 镇江港务集团提供),然后进入全封闭皮带机流程线,再经过采用布袋除尘工艺的中转站转送至进场输送带,最后通过斗轮机到达堆场,下料斗、皮带机、斗轮机等全程都采用高能微雾抑尘,确保货物无扬尘。近日,记者走进镇江港,感受实现港区“一尘不染”的“奥秘”。

镇江港务集团安环部高级业务经理吴殿兵介绍,2019年以来,镇江港务集团以打造更具特色的“水运江苏”以及“碳达峰碳中和”等目标为愿景,围绕“减污降碳、绿色发展”全面开展港口环保提升工作。

在治气方面,在港内厂界、平台、场内等重点检测区域,镇江港务集团设置粉尘在线监测系统25台,系统接入省、市监测平台,连通国控数据,实现港区粉尘24小时在线监测全覆盖。与此同时,通过建设挡风抑尘墙6.68公里、库棚17.3万平方米,硬化黑化港区所有道路堆场107万平方米,改造革新各类抑尘设备设施41项;严抓现场清洁生产措施落实,重点落实环保全员责任制、堆桩全覆盖、货物全封闭、抑尘保湿全流程、清扫清洁全过程,确保现场时时处处干干净净、整整齐齐。

2024年镇江港大气均值TSP为59.30微克/立方米,常态化处于国家一级标准,低于镇江经开区国控点。

在镇江经开区新材料产业园内的索尔维(镇江)化学品有限公司(以下简称“镇江索尔维”)的原料罐区东南面,由绿色楼梯包围的三层装置通过管道连接着远处的生产厂区。

“RTO炉是一种蓄热式氧化炉。”镇江索尔维消费及工业专用化学品事业部生产经理季磊介绍,企业2023年年底投资900余万元购置RTO炉和建设配套管廊及管道,含有VOCs的尾气首先进入最下层的进气室,通过中间蓄热室将尾气预热,再进入燃烧室在大于800℃的环境中氧化燃烧,高温尾气再通过另一个蓄热室将热量传递到预热陶瓷砖中,降温后的尾气通过高空排气筒达标排放。在装置旁边的小房子则是通过在线监控监测VOCs是否燃烧干净。

RTO焚烧炉主要处理表面活性剂多功能车间及聚合物单位车间、罐区部分呼吸阀排气和污水处理站部分高VOCs气体,装置目前处于调试运行阶段,预计2025年2月初正式投入运行。据测算,RTO炉正式投入运行后企业VOCs排放量将减少50%左右。

无论是港务集团实现港区“一尘不染”,还是镇江索尔维购置新装置减少VOCs排放,均是镇江经开区精准治气,推动空气质量“向优而行”的生动实践。

作为全市工业集中区,面对以化工、造纸为主的产业结构和以燃煤为主的能源结构,2024年镇江经开区生态应急局积极推进废气VOCs治理、清洁能源(原料)替代、港务集团绿色港口治理等68个提气降碳项目,与此同时,依托区域监测监控体系,充分发挥第三方专业优势,完善多方联动“人防+技防”工作机制,严格落实“巡查-排查-监管-整改”闭环管理,实现大气污染排放精准溯源、精准治理。

2024年,镇江经开区PM2.5浓度32.5微克/立方米,优良天数比率82%,两项考核指标在全市大气国控站点排名第一。(记者 张琼霞 通讯员 林致国)