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焚烧下县势不可挡,县域焚烧市场将迎建设高峰!
2023-02-21 08:21:16来源:中国固废网 陈伟浩 阅读量:10819
导读:县域固废治理不仅是实现2035年远景目标的必然要求,也是生态文明的根本要求,通过县域固废治理提升整体生态环境质量,更是共同富裕的重要内容。随着“无废城市”市场需求下沉至县级区域,具备全产业链优势的头部企业及技术型公司将率先受益。
过去十年,是中国环境基础设施“大踏步”的十年,这一波环保设施的建设潮,也让众多环保企业赚了个盆满钵满。据住建部去年发布的《2021年中国城市建设状况》显示,截止2021年年底,我国城市污水处理率为97.89%;生活垃圾无害化处理率为99.88%,无论是污水还是垃圾处理率都已经接近了100%,城市环境基础设施建设几乎已经饱和。
然而,随着中国环境基础建设设施的日渐饱和,这种传统的增长方式已不可持续,未来,环境产业亟需找到新的增长点。
01 新政策释放新机遇
近期,国家政策密集发布,为下一阶段固废行业重点领域、延展方向给出明确指引。
2022年5月,国家发布《关于推进以县城为重要载体的城镇化建设的意见》,这是我国针对县城城镇化建设的中央层级重要政策文件。城镇化,就需要推进环境基础设施建设;而环境基础设施建设,则会对环保建设产生巨大的需求。(相关链接:新一轮县城基建任务下达,环保方向有哪些内容?钱从哪来?)
各地积极响应,甘肃、青海、陕西、江苏、山东等省分别都出台了相应政策,并明确落地实施路径,全国其它省市也正陆续推进。以山东为例,在提升城乡人居环境质量方面,明确了发展目标:提升固体废物收集处理能力,到2025年,生活垃圾分类覆盖率由2021年的45%提升至70%;污泥无害化处置率达到90%以上,黑臭水体整治全部清零。
2022年7月,住房和城乡建设部和国家开发银行发布《关于推进开发性金融支持县域生活垃圾污水处理设施建设的通知》,《通知》提出,支持县域生活垃圾收运处理设施建设和运行,主要包括:县城、乡镇、行政村生活垃圾分类投放设施、集中收集设施;县城、乡镇生活
垃圾中转站;各类生活垃圾运输车辆;县城生活垃圾焚烧处理等设施以及乡镇小型化、分散化、无害化处理设施;
再生资源回点、站或县级再生资源利用中心;县域生活垃圾收运处置体系运行监管信息平台。(相关链接:住建部、国开行支持到位!县域生活垃圾、污水处理市场或将迎来爆发)
2022年年末、2023年年初,国家又相继发布了《关于加强县级地区生活垃圾焚烧处理设施建设的指导意见》和《关于加快补齐县级地区生活垃圾焚烧处理设施短板弱项的实施方案》,明确到2025年,“无废城市”建设地区以及其他具备条件的县级地区,应建尽建生活垃圾焚烧处理设施,“垃圾焚烧下乡”进程进一步推进。(相关链接:重磅!发改委、住建部发文!加快补齐县级地区生活垃圾焚烧处理设施短板弱项,钱到位了?四部委&央行发文加强县级生活垃圾焚烧处理设施建设)
数据显示:截止2021年底,我国县城数量为1482个,生活垃圾清运量为6791.35万吨,共有257座焚烧厂,按照一县一厂(小型焚烧设施),还有1225个县城无垃圾焚烧厂(小型焚烧设施),市场缺口很大。
02 县域焚烧设施将迎建设高潮
县域级垃圾焚烧厂最大的痛点,是经济性较差,主要是因为我国县域小型焚烧设施缺乏可以余热利用、市政供暖等其他提高经济收益的方式。在不具备发电的情况下,县域小型垃圾焚烧处理成本在300元/吨以上,远超城市焚烧厂的水平(中国固废网根据公开信息统计的2022年上半年27个垃圾焚烧发电项目来看,垃圾处理费平均中标价格为92元/吨),尤其是偏远地区,其处理成本还要更高。据统计,我国约35%的县级市、80%的县城垃圾清运量不足200吨/日。
2021年,续盈环保在做陕西镇坪县生活垃圾无害化处理示范项目时,解决了小型蒸汽发电设备的供给等问题。50吨及以上规模的项目,在选用续盈炉时,可实现配置小型
发电机组,发电量足够项目全厂使用并留有富余,这是百吨以下生活垃圾处理的重大跨越。
除此以外,小型焚烧炉炉膛小、垃圾少,热稳定性差,炉温波动大、烟气成分波动也大,很难达到稳定工况下烟气、二恶英等污染物达标排放。如果要稳定焚烧,需要添加柴油等燃料助燃,但会大幅增加成本。
云南水务总工程师、技术与风控中心总经理罗宇煊表示,云南水务低温绝氧热解碳化技术,具有处理规模灵活,处理垃圾种类广泛,解决了二恶英处理难题,实现了烟气中超低碳的排放,生活垃圾百分之百的资源化、减量化和无害化!目前,已经在昆明市宜良县建成日处理能力200吨生活垃圾的低温绝氧热解碳化工艺示范化工程项目。
在2022固废战略论坛上,中国环境保护集团、光大环境、康恒环境等固废龙头企业,均透露了自己正在参与由国家发改委牵头的县域小型垃圾焚烧技术攻关项目,重点突破100吨级、200吨级小型垃圾焚烧装备,力争在焚烧小型化技术方面实现突破。
虽然小型焚烧处理设施还存在各种问题(烟气处理不达标、运行不稳定、标准体系不健全等),但随着政策监管体系逐渐完善、小型焚烧装备技术不断升级,试点项目愈发成熟,以及在原生垃圾“零填埋”的引导下,我国县域垃圾焚烧处理设施开始迎来建设新高潮。今年一开年,就陆续有多个县级垃圾焚烧项目释放出来:
2月3日,云南省临沧市耿马县孟定镇生活垃圾焚烧厂特许经营项目发布中标公告,中标价为249.09元/吨。
2月7日,贵州省开阳县生活垃圾焚烧发电特许经营项目(开阳、息烽两县联建,500吨/日)发布预中标公告,87.80元/吨。
2月11日,江西省赣州市上犹县生活垃圾外运焚烧处置项目发布结果公告,中标单价为150元/吨,该县生活垃圾产生量每日约200吨。
2月13日,光大环保以66.5元/吨中标优质县级焚烧项目——大方县焚烧项目,距离该项目约7公里处有朝中变电站,能够满足项目生产用电和电力上网的需求。
县域固废治理不仅是实现2035年远景目标的必然要求,也是生态文明的根本要求,通过县域固废治理提升整体生态环境质量,更是共同富裕的重要内容。随着“无废城市”市场需求下沉至县级区域,具备全产业链优势的头部企业及技术型公司将率先受益。
原标题:焚烧下县势不可挡 县域焚烧市场将迎建设高峰!
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