《深入打好城市黑臭水体治理攻坚战实施方案》的发布，让不少目光聚焦到了更为细致的地方，如：“建立健全垃圾收集(打捞)转运体系”，“不应盲目提高污水处理厂出水标准、新扩建污水处理... 《深入打好城市黑臭水体治理攻坚战实施方案》的发布，让不少目光聚焦到了更为细致的地方，如：“建立健全垃圾收集(打捞)转运体系”，“不应盲目提高污水处理厂出水标准、新扩建污水处理厂”，“到 2025 年，进水BOD 浓度高于 100 毫克/升的城市生活污水处理厂规模占比达90%以上”，“严格做好‘农家乐’、种植采摘园等范围内的生活及农产品产生污 水及垃圾治理”，“黑臭水体整治不力问题纳入中央生态环境保护督察和长江经济带、黄河流域生态环境警示片现场调查拍摄范畴”，“落实污 水处理收费政策” “推广以 污 水 处 理 厂 进 水 污染物浓度、 污染物削减量和 污泥 处理处置量等支付运营服务费”等等。本文就这个问题来探讨一下。1、什么是BODBOD，生化需氧量，指在一定条件下，微生物分解存在于 水中的可生化降解有机物所进行的生物化学反应过程中所消耗的溶解氧的数量，是反映 水中有机污染物含量的一个综合指标，也是重要的 环境质量监测参数。一般清净河流 的五日 生化需氧量 不超过2mg/L，工业、农业、海洋用 写 等要求 生化需氧量 应小于5mg/L，而生活饮用 水 应小于1mg/L。《城镇排放标准》中明确了BOD5的一次监测最高允许排放浓度，即一级A15mg/L；一级B30mg/L；二级45mg/L；三70mg/L。2、何时进水BOD低了不能再下去了从上述定义看，有机有害物质含量过高表明其对环境影响巨大。而按出 Sewage Treatment Plant Standards 视，其难道不是进去 BOD数值越低越好的吗？其矛盾症结点还是在于清除与杂乱是否分离。
3，从BOD看雨与脏分离和管网改善专家普遍认为，其直接原因大部分可以归结到非生活废料排入稀释，以及管网流量过慢（大量 BOD沉积在管网内）的因素上，因此才会有 “进去 BOD浓度”的关注点。这意味着实际上关注的是我国城市排涝管网清脏混接和雨脏混接的问题。
4.Beyond the BODB OD, Biochemical Oxygen Demand, is a measure of the amount of dissolved oxygen required to break down organic matter in water. It is an important indicator of water quality and can be used to assess the effectiveness of wastewater treatment processes.
In China, there are strict regulations governing the discharge of wastewater into rivers and streams. The "Urban Wastewater Treatment Facilities" standard requires that all urban wastewater treatment facilities must meet certain standards for effluent quality before they are allowed to discharge their treated wastewater into receiving waters.
The standard also sets limits on the amount of pollutants that can be discharged into receiving waters. For example, it prohibits the discharge of untreated or partially treated sewage sludge into receiving waters.
To achieve these goals, cities must invest in modern infrastructure such as advanced waste management systems and green technologies like rainwater harvesting systems.
The Chinese government has set ambitious targets for improving water quality in its cities by 2020. To achieve these targets, cities will need to implement effective policies and strategies that address pollution from various sources including industrial activities, agricultural runoff and domestic sewage disposal practices.
Furthermore, city governments should encourage public participation in environmental protection efforts through education campaigns awareness-raising programs.
Finally, policymakers should consider implementing economic incentives for businesses that adopt sustainable practices such as recycling waste materials reducing energy consumption using renewable energy sources.
By taking these steps China can ensure a cleaner healthier environment for future generations while also promoting sustainable development.
This article explores how policy makers have addressed this issue by implementing measures such as building more efficient wastewater treatment plants increasing funding for research development on new technologies improving public awareness about environmental issues promoting greener industries encouraging private sector investment in clean technology projects supporting international cooperation initiatives related to environmental protection.
These actions taken together represent significant progress towards achieving better air water soil health outcomes across China's major metropolitan areas while ensuring long-term sustainability.
Moreover many experts believe that further improvements could be made by focusing on other key factors influencing urban ecosystems such as transportation infrastructure land use planning disaster risk reduction climate change resilience etcetera
So what does this mean? In short it means we've got our work cut out but with determination collaboration innovation we can create thriving eco-friendly metropolises where everyone benefits not just some people or groups but all stakeholders involved.
标签： 基础地理
