<p style="text-indent:32px"><span style="font-size: 16px;"><span style='font-family: "Times New Roman"; text-decoration-line: none; font-size: 16px;'><span style="font-family:宋体">原广西罗城铁合金厂旧址地块位于河池市罗城仫佬族自治县四把镇新印村，该地块占地面积约</span>83545.89m²<span style="font-family:宋体">（合计约</span><span style="font-family:Times New Roman">125.32</span><span style="font-family:宋体">亩），中心坐标为</span><span style="font-family:Times New Roman">E108.863407°</span><span style="font-family:宋体">，</span><span style="font-family:Times New Roman">N24.771308°</span><span style="font-family:宋体">。<span style=";font-family:宋体;font-size:16px">罗城铁合金厂</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">于</span>1986<span style="font-family:宋体">年兴办，由罗城仫佬族自治县与鞍钢联合投资建造两座</span><span style="font-family:Times New Roman">1800</span><span style="font-family:宋体">千伏安电热炉</span></span><span style=";font-family:宋体;font-size:16px">，</span><span style=";font-family:'Times New Roman';font-size:16px">1987<span style="font-family:宋体">年</span><span style="font-family:Times New Roman">11</span><span style="font-family:宋体">月</span><span style="font-family:Times New Roman">28</span><span style="font-family:宋体">日投产。主要产品是硅锰合金、铁合金，原辅材料涉及锰矿石、富锰矿、烧结矿、焦炭、白云石、硅石、</span></span><span style=";font-family:宋体;font-size:16px">燃煤</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">的使用。</span></span><span style=";font-family:宋体;font-size:16px"><span style="font-family:Times New Roman">1995</span><span style="font-family:宋体">年当年原厂停产，</span><span style="font-family:Times New Roman">1996-2009</span><span style="font-family:宋体">年断断续续生产，期间于</span><span style="font-family:Times New Roman">2002-2005</span><span style="font-family:宋体">在地块东北面区域新建钛白粉冶炼车间并断断续续生产钛白粉产品，</span><span style="font-family:Times New Roman">2003</span><span style="font-family:宋体">年使用罗城民族广场建设产生的建筑废料对地块进行填平，</span><span style="font-family:Times New Roman">2005</span><span style="font-family:宋体">年停产；</span><span style="font-family:Times New Roman">2009</span><span style="font-family:宋体">年整个厂全面停产关闭，不再从事原铁合金厂相关生产性活动。</span><span style="font-family:Times New Roman">2006</span><span style="font-family:宋体">年至</span><span style="font-family:Times New Roman">2016</span><span style="font-family:宋体">年，全厂堆存煤矸石；</span><span style="font-family:Times New Roman">2000</span><span style="font-family:宋体">至</span><span style="font-family:Times New Roman">2021</span><span style="font-family:宋体">年期间陆续部分区域分别租赁给私人水泥杆厂（</span><span style="font-family:Times New Roman">2000</span><span style="font-family:宋体">年起租赁）、罗城城西建材城（</span><span style="font-family:Times New Roman">2009</span><span style="font-family:宋体">年起租赁）、私人水泥砖厂（</span><span style="font-family:Times New Roman">2018</span><span style="font-family:宋体">年起租赁）以及罗城小玉汽车维修中心当三家汽车维修厂（</span><span style="font-family:Times New Roman">2018</span><span style="font-family:宋体">年起租赁）进行经营性活动。</span><span style="font-family:Times New Roman">2024</span><span style="font-family:宋体">年至</span><span style="font-family:Times New Roman">2025</span><span style="font-family:宋体">年，租赁企业已陆续关闭搬迁，并拆除大部分构筑物。目前铁合金厂正处于破产清算阶段。</span></span></span></span></span></p><p style="text-indent:32px"><span style="font-size: 16px;"><span style="font-family: 宋体; text-decoration-line: none; font-size: 16px;"></span></span></p><p style="text-indent:32px"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">本次详细调查</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">在地块内共布设</span>175<span style="font-family:宋体">个土壤采样点位</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，</span></span><span style="font-size: 16px; font-family: 宋体;">采集地块内土壤样品425个（不含平行样），</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">采集地块外土壤对照点样品</span>12<span style="font-family:宋体">个，采集地块内地表水样品</span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">个，地块内底泥样品</span><span style="font-family:Times New Roman">2</span><span style="font-family:宋体">个，地块内固废样品</span><span style="font-family:Times New Roman">22</span><span style="font-family:宋体">个。根据</span></span><span style=";font-family:宋体;font-size:16px">调查</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">结果得知：</span></span></p><p style="text-indent:32px"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">（</span>1<span style="font-family:宋体">）送检的</span><span style="font-family:Times New Roman">12</span><span style="font-family:宋体">个对照土壤检测结果均未超过《土壤环境质量建设用地土壤污染风险管控标准（试行）》（</span><span style="font-family:Times New Roman">GB36600-2018</span><span style="font-family:宋体">）和《建设用地土壤污染风险筛选值和管制值》（</span><span style="font-family:Times New Roman">DB45/T 2556-2022</span><span style="font-family:宋体">）中规定的</span></span><span style=";font-family:宋体;font-size:16px">“</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">第二类用地</span></span><span style=";font-family:宋体;font-size:16px">”</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">筛选值。</span></span></p><p style="text-indent:32px"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体"></span></span></p><p style="text-wrap: wrap; text-indent: 32px;"><span style='font-family: "Times New Roman";'><span style="font-family: 宋体;">（</span></span><span style="font-family: 宋体;"><span style='font-family: "Times New Roman";'>2</span></span><span style='font-family: "Times New Roman";'><span style="font-family: 宋体;">）地块内水塘中的积水和底泥样品各项检测指标均未超过相关标准的限值，底泥不具有浸出风险，不会对周边农用地土壤及水体造成不利影响。</span></span></p><p style="text-wrap: wrap;"><span style='font-family: "Times New Roman";'><span style="font-family: 宋体;"> （</span></span><span style="font-family: 宋体;"><span style='font-family: "Times New Roman";'>3</span></span><span style='font-family: "Times New Roman";'><span style="font-family: 宋体;">）本次采集的</span>22<span style="font-family: 宋体;">个固废样品各项指标均未超过《危险废物鉴别标准 浸出毒性鉴别》（</span>GB5085.3-2007<span style="font-family: 宋体;">）中的标准限值，不属于危险废物；均未超《污水综合排放标准》（</span>GB 8978-1996<span style="font-family: 宋体;">）中的标准限值。因此，</span></span><span style="font-family: 宋体;">地块内填埋的废渣和遗留的烟囱残余物均为Ⅰ类一般固体废物，总方量为10883.66m³。</span></p><p style="text-indent:32px"><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">（</span>4<span style="font-family:宋体">）</span></span><span style="font-size: 16px; font-family: 宋体;">送检的地块内425个土壤样品（不含平行样）中</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">，水溶性氟化物含量均低于《建设用地土壤污染风险筛选值和管制值》（</span>DB45/T2556-2022<span style="font-family:宋体">）中第二类用地筛选值；汞、石油烃含量均低于《土壤环境质量 建设用地土壤污染风险控制标准（试行）》（</span><span style="font-family:Times New Roman">GB36600-2018</span><span style="font-family:宋体">）第二类用地筛选值。但土壤中砷、镉、铅、锰</span><span style="font-family:Times New Roman">4</span><span style="font-family:宋体">个指标超过《土壤环境质量 建设用地土壤污染风险管控标准（试行）》（</span><span style="font-family:Times New Roman">GB36600-2018</span><span style="font-family:宋体">）、《建设用地土壤污染风险筛选值和管制值</span><span style="font-family:Times New Roman">(</span><span style="font-family:宋体">广西地方标准</span><span style="font-family:Times New Roman">)</span><span style="font-family:宋体">》（</span><span style="font-family:Times New Roman">DB45/T2556-2022</span><span style="font-family:宋体">）</span></span><span style=";font-family:宋体;font-size:16px">“</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">第二类用地</span></span><span style=";font-family:宋体;font-size:16px">”</span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">筛选值标准。</span></span><span style=";font-family:'Times New Roman';font-size:16px"><span style="font-family:宋体">地块土壤中砷、镉、铅、锰超标的原因，主要是本地块从事生产硅锰合金、铁合金、钛白粉的冶炼多年历史有关，原辅材料涉及锰矿石、富锰矿、烧结矿、焦炭、白云石、硅石、燃煤的使用，生产原辅材料无规范堆存，设施防渗措施不完善，含有毒有害物质的可能经冲刷、淋溶作用渗透进入土壤或地下水系统中，导致土壤受到含有多重金属（砷、镉、铅、锰等）废水渗透下渗而污染土壤。</span></span></p><p style="text-indent:32px"><span style=";font-family:宋体;font-size:16px"><span style="font-family:宋体">（</span><span style="font-family:Times New Roman">5</span></span><span style="font-size: 16px; font-family: 宋体;">）地块所处的松散岩类孔隙水含水层由于层厚较薄，该层枯季一般不含水，雨季则局部含上层滞水。详细调查采样时间为*开通会员可解锁*，未在雨季，14个地下水监测点位钻探至3-4m基岩层，均未出现地下水。因此本次调查地块未采集到地下水样品。</span></p><p style="text-indent:32px"><span style="font-size: 16px; font-family: 宋体;">综上分析，铁合金厂旧址地块土壤主要受砷、铅、镉、锰等重金属污染，污染土壤叠加面积约37680.11 m²，方量约64590.78 m³。根据《建设用地土壤污染风险评估技术导则》（HJ 25.3-2019），需对本项目地块开展下一步风险评估工作。</span></p><p><br/></p>