
青海省海东市民和县古鄯高速公路服务区采用智能化PE固定床生物膜污水处理设备,实现高原高寒环境下污水就地处理与中水回用。青海交控集团全面推进绿色公路建设,在污水治理、光伏发电及废旧沥青循环利用等方面取得显著成效。
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青海高海拔地区冬季极端低温可达零下20℃,传统污水处理工艺在低温下面临微生物活性折损、出水不达标及运行成本高昂等痛点。
中新网西宁9月9日电 题:高原服务区污水巧治理 绿色交控绘就青海生态通途
作者 李隽
高原秋日,驱车驶入青海省海东市民和回族土族自治县古鄯高速公路服务区,整洁开阔的停车区秩序井然。
这里每日数百名司乘产生的生活污水,靠一套全地埋智能化的PE固定床生物膜分散组合式污水处理设备就地处理、中水回用。
“因地处高原,青海绝大多数高速服务区、乡镇地处高海拔区域,冬季极端低温可达零下20℃。以往服务区多采用传统污水处理工艺,设备靠加药剂处理,运行成本高,且低温环境下微生物活性折损过半,出水难以达标,导致停运闲置。”负责该服务区污水处理项目的湖南宏青环保科技有限公司设备技术副工程师方文娟介绍。
PE固定床生物膜工艺,罐体自带密闭保温结构,零下20℃环境下微生物依然成活,不添加任何药剂,全年出水稳定达到再生水回用标准,每吨水运行成本仅为0.23元(人民币,下同),使用寿命长达30年。
目前,古鄯、茫崖等青海省12处高速服务区已经连续运行多年,中水回用率稳定保持在90%以上。
据了解,青海省交通控股集团有限公司高速公路运营分公司对管辖范围内的79座高速公路服务区开展污水处置管理工作,因地制宜采取接入市政管网、中水回用及污水清运等多种方式进行处理,目前,该省高速公路服务区日清运污水约3000立方米。
沿着G6京藏高速一路向西,青海省首个零碳服务区——共和服务区,屋顶、大型停车棚上大面积铺设的光伏组件在阳光下熠熠生辉。
共和服务区的分布式光伏总装机容量达428.13kWp,搭建起“自发自用、余电上网、智能储能”三位一体绿色能源循环体系,截至目前累计清洁发电量突破68.6万千瓦时。光伏产生的绿色电力,全面供给服务区综合楼照明、商超运营、新能源充电桩等设备运转。
在公路项目建设中,青海交控集团最大限度减少工程项目对原生植被、自然生态、生物物种、湿地水系的扰动。
在倒淌河经青海湖至茶卡公路施工中,建设团队主动绕避生态敏感区,老路利用率高达98%。该项目累计投入4300余万元生态环保资金,采取草皮移植、铺设植被纤维毯等举措,完成全线边坡生态重塑。
五年来,青海交控集团在原生草皮利用及植被纤维毯应用领域累计取得36项专利,不仅为高原绿色筑路提供了坚实技术支撑,更探索出一条符合青海生态特点的公路建设新路径。
为持续推动交通运输领域低碳转型、实现高质量发展,青海交控集团全面推广应用新技术、新工艺、新材料、新设备“四新”技术,重点普及泡沫沥青就地冷热再生等低碳环保施工工艺,打造资源节约、生态友好、降本高效的现代化公路养护体系。
在施工过程中,该省通过再生技术工艺,完成1.23万立方米废旧沥青混合料100%就地回收再生,有效将道路施工废旧废料就地转化为合规可用的施工原材料,彻底破解公路养护废料闲置、处置困难、污染环境等难题,成功实现道路养护资源循环利用、施工能耗压降、生态污染减量的多重突破。
目前,青海交控集团高速公路废旧沥青路面材料循环利用率已达98%,五年来累计节约养护工程建设资金1200余万元,真正实现了生态效益与经济效益双向提升。
“十四五”期间,青海交控集团累计投入环保专项资金9.87亿元,将生态优先、绿色发展贯穿公路规划、建设、养护、运营全生命周期,全方位铺展高原绿色交通画卷。

According to the Qinghai Provincial Department of Water Resources on the 9th, Xining City has issued a plan to carry out red, yellow and blue graded management and control of the safety risks of 109 registered dams and 101 waterlogging ponds in the city to make up for the shortcomings in refined safety management and control of water conservancy facilities in the plateau area.

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