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添加生物炭可精准修复砷污染土壤
Ke Ji Ri Bao· 2025-07-23 08:27
Core Viewpoint - The research reveals a dual regulatory mechanism of shrimp shell biochar on arsenic migration in acidic and alkaline soils, providing a new pathway for precise arsenic pollution remediation in agricultural environments [1][2]. Group 1: Research Findings - The study published in the journal "Biochar" highlights that shrimp shell biochar significantly activates arsenic migration in acidic soils while promoting arsenic fixation in alkaline soils [1]. - In acidic environments, shrimp shell biochar enhances the solubility of organic matter, leading to increased arsenic release, and activates microbial functions that elevate the abundance of arsenic-reducing and efflux genes [1][2]. - Quantitative data indicates that arsenic migration rates in acidic soils increase by 21%-31% with biochar addition, while arsenic fixation rates in alkaline soils improve by 19%-24%, confirming the dual regulatory effect [2]. Group 2: Practical Implications - The findings challenge the traditional view of biochar's single remediation function, establishing a theoretical basis for its differentiated application in arsenic-contaminated soils [2]. - The research suggests that biochar application should be carefully evaluated based on soil pH; it should be used cautiously in acidic soils and fully leveraged in alkaline soils for stabilization [2]. - This technology represents an innovative approach to utilizing waste shrimp shells for environmental remediation, combining ecological and economic benefits, and offers a controllable solution for arsenic pollution risk management in China [2].
土壤修复项目总是批不下来,为什么?怎么办?
Core Viewpoint - The Chinese government plans to issue 1.3 trillion yuan of ultra-long-term special bonds by 2025, with 800 billion yuan allocated to support major strategic projects and key areas, including soil pollution remediation [1] Group 1: Current Issues in Soil Remediation Bond Application - There are significant issues in the application process for soil remediation projects, including insufficient preliminary planning and a lack of a dynamic project database [2] - Many local governments do not prioritize the identification of contaminated sites, leading to rushed applications and inadequate understanding of key information [2] - The selection of remediation projects often lacks precision and deviates from national policy guidance, resulting in weaker competitiveness [2] - Delays in essential procedures such as project approval and environmental assessments increase risks and compliance issues [2] Group 2: Quality of Application Materials - The quality of application materials for soil remediation projects is often low, with missing key elements and insufficient justification [3] - Performance targets are frequently vague, lacking quantifiable metrics such as remediation area and pollutant reduction [3] - Long-term monitoring and management considerations are often neglected, leading to a "one-time fix" mentality [3] - Coordination among various departments involved in the application process is inadequate, resulting in insufficient preparation of project materials [3] Group 3: Recommendations for Improving Application Quality - It is recommended to enhance preliminary planning and establish a project reserve system to improve application quality [4] - Local governments should prioritize selecting contaminated sites that align with national policy and focus on areas with severe pollution [4] - Establishing a departmental coordination mechanism is crucial for expediting the application process and ensuring timely approvals [5] Group 4: Enhancing Material Quality and Comprehensive Benefit Analysis - Improving the quality of application materials involves establishing a scientific quantitative indicator system for performance targets [5] - Comprehensive benefit analysis should quantify environmental, economic, and social impacts, emphasizing the importance of food security and urban renewal [6] - A long-term management mechanism should be established to ensure project sustainability, including funding and responsibility frameworks [6] Group 5: Professional Support and Organizational Assurance - Forming expert advisory teams can provide technical support for improving application quality [7] - High-level leadership and a structured reporting mechanism are essential for addressing challenges in the application process [6]
*ST京蓝涉嫌信披违规被立案
Group 1 - *ST Jinglan has been issued a "Notice of Case Filing" by the China Securities Regulatory Commission (CSRC) for suspected violations of information disclosure, marking a recurrence of such issues since July 2023 [2] - The company has previously faced penalties for multiple disclosure violations, including failure to disclose goodwill impairment in annual reports for 2021 and 2022, resulting in a fine of 3 million yuan [2] - The company has committed to improving internal governance and enhancing the quality of information disclosure to protect the interests of shareholders [2] Group 2 - *ST Jinglan's main business includes industrial and urban solid waste harmless disposal and soil environment remediation, but its performance has been declining [3] - Revenue has decreased from 738 million yuan in 2021 to 195 million yuan in 2022, and further down to 149 million yuan in 2023, a year-on-year decline of 23.69% [3] - Although revenue is projected to increase to 378 million yuan in 2024, the company is expected to incur a net loss of 110 million yuan, a year-on-year increase of 110.41% [3] Group 3 - In Q1 2025, *ST Jinglan reported revenue of 126 million yuan and a net loss of 12.95 million yuan [4] - The company attributed the Q1 loss to production stoppages during the Spring Festival, which significantly reduced profits due to depreciation, labor, and interest costs [4] - Annual maintenance costs also contributed to the reduced profits, leading to a pattern of low or negative profits in the first quarter of each year [4]
3家A股公司,突发!一家实控人被刑事立案,两家被证监会立案
证券时报· 2025-05-30 15:04
Core Viewpoint - The article discusses the criminal investigation of *ST Tianyu's actual controller Yan Chunyu for suspected fund misappropriation, which has raised concerns about the company's governance and financial health [2][4]. Group 1: Company Investigation - *ST Tianyu's actual controller Yan Chunyu and others have been criminally investigated for suspected fund misappropriation, as confirmed by the Wuhan Public Security Bureau [2]. - The company stated that Yan Chunyu does not hold any director, supervisor, or senior management positions, and the investigation is not expected to significantly impact normal operations [4]. Group 2: Company Performance - In the 2024 annual report, *ST Tianyu reported total revenue of 847 million yuan, a year-on-year decrease of 50.20%, and a net loss attributable to shareholders of 364 million yuan, compared to a profit of 19.71 million yuan in the previous year [7]. - The Q1 2025 report showed total revenue of 45.37 million yuan, a year-on-year decline of 86.50%, with a net loss of 40.19 million yuan, compared to a profit of 4.74 million yuan in the same period last year [7]. Group 3: Management Changes - Multiple key personnel have resigned from *ST Tianyu in May, including the chairman Yang Haitao and other board members, citing personal reasons [6][8].
浙江卓锦环保科技股份有限公司 关于披露联合体项目中标的公告
Group 1 - The company has won a bid for the soil remediation project at the former gas plant site of Hefei Huanran Huaren Gas Co., Ltd, with a total bid amount of 67.68 million yuan (including tax) [2][5] - The company's share of the contract work is approximately 88.5%, which translates to an expected amount of about 59.8968 million yuan, subject to final execution by the consortium [2][5] - The project duration is set for 900 calendar days, with the final terms to be confirmed upon contract signing [2][5] Group 2 - The bidding entity, Hefei Huanran Huaren Gas Co., Ltd, is a limited liability company with a registered capital of 1 billion yuan, engaged in gas production, sales, and related engineering services [2] - The consortium includes Coal Industry Hefei Design Institute Co., Ltd and Hefei Hehe Construction Engineering Co., Ltd, with the former having a registered capital of approximately 401.38 million yuan and the latter 30 million yuan [4][5] - The project is part of the company's regular business operations, and revenue will be recognized progressively based on project implementation [5]
大数据技术如何助力土壤修复更加绿色低碳?
在应对全球气候变化与实现"双碳"目标的双重驱动下,土壤修复行业正在从"传统粗放式治理"向"低碳 精准治理"的模式转变。近年来,随着数字技术的快速发展,土壤修复行业已进入数字化、智能化发展 的新阶段。通过建立涵盖"天—空—地—井"的一体化立体监测体系,结合智能决策支持系统,大数据技 术正在深度改造污染源识别、修复工艺优化和治理效果评估等关键技术环节,为行业绿色低碳发展提供 了新的技术支撑。 大数据技术赋能土壤修复全链条降碳 大数据与智能技术正驱动土壤污染治理体系向精准化、低碳化转型。传统治理模式受限于经验依赖与静 态评估,存在效率低、隐性成本高等瓶颈。新技术通过多维数据融合与智能算法迭代,在污染空间解 析、修复过程调控及碳足迹溯源三个维度实现突破,为精准修复与"双碳"目标协同提供了创新路径。 一是污染识别模式从经验判断向数据驱动转变。传统土壤污染识别主要依靠经验判断和离散采样,检测 周期长、成本高。大数据技术通过多维数据融合,显著提升了污染识别精度。如利用卫星遥感高光谱数 据反演表层重金属空间分布,结合历史工业用地GIS数据训练机器学习模型,在某铅锌矿区案例中识别 精度达到89%,调查成本降低40%。通过部署物 ...
建工修复中标珠海项目
news flash· 2025-04-18 09:49
Core Viewpoint - The company, Jian Gong Xiu Fu (300958), has successfully won a bid for a soil remediation service procurement project from Zhuhai Shipbuilding Co., with a contract amount of 38.9825 million yuan, marking its first remediation project in Zhuhai and indicating a significant step in market expansion within the Greater Bay Area [1] Group 1 - The project won by the company is valued at 38.9825 million yuan [1] - This marks the company's first remediation project in Zhuhai [1] - The successful bid signifies the company's progress in expanding its market presence in the Greater Bay Area [1]