Detoxification and Multi-Resource Recovery from Landfill Leachate

尽管回收基础设施和公众意识得到了改善，但英国每年仍将1700万吨城市固体废物送入垃圾填埋场，这一数字令人震惊。这会导致渗滤液的堆积，渗滤液是从垃圾填埋场排出的液体。渗滤液中含有微量化学物质，对环境有很强的污染作用，因此需要有效的处理方法。然而，更重要的是，废物管理的雄心应该超越保护人类健康和环境，将节约能源和回收自然资源放在重要的议事日程上。这个翻译项目旨在展示渗滤液处理和资源回收的综合过程。它涉及三项创新：新颖的物理前处理、适应性进化的微生物联合体的强化处理以及通过高效的生物质收获来回收资源，从而为英国的循环经济做出贡献。结果跨越了NERC的几个优先研究主题，如自然资源的可持续利用和环境、污染和人类健康。渗滤液的成分可能会有很大差异，具体取决于垃圾填埋场中的垃圾的年龄和类型，垃圾中既含有溶解的和悬浮的有机和无机物质。Viridor Waste Management Ltd是英国第三大废物管理组织，拥有40多个场地。大约一半的地点使用污水渠将受污染的废水输送到污水处理厂进行处理，其余的要么用油轮运输，要么排放到地表水中。每年的渗滤液总产量为1,056,716立方米，运营成本在每立方米4-10 GB之间(例如处置成本、使用的能源或化学品)。以前的工作包括从渗滤液中分离天然微生物群，开发新的收获方法，以及估计回收的潜在资源。该项目的主要翻译活动是设计和建造一个中试规模的光生物反应器，该反应器配备了以前国家环境研究中心和非国家环境研究中心资助的研究的所有创新。这将由Varcon Solutions、TUOS研究技术员和Viridor公司的工作人员在当地的一个垃圾填埋场(Erin)安装。经过处理的渗滤液将被送入光生物反应器，并仔细监测生长和操作参数。这些数据将用于Viridor以及其他终端用户的技术经济评估。还将创建一个易于使用的资源回收计算器。这一过程将以延时方式拍摄，并用于制作视频，用于营销、知识交流和教育目的。视频和光生物反应器系统将在2017年底/2018年初的相关贸易展上展示。最终目的是展示NERC资助的研究进展，提高技术准备水平，对工业、社会和环境产生影响，以及为项目合作伙伴和更广泛的废物管理界带来经济利益。

Despite improved recycling infrastructure and public awareness, the UK still sends a staggering 17 million tonnes of municipal solid waste into landfill every year. This leads to the build up of leachate, the liquid which drains from a landfill site. Leachate contains trace chemicals, which can have strong contaminating effects on the environment, and therefore effective treatment methods are required. More to the point, however, ambitions for waste management should go beyond protection of human health and the environment, with conservation of energy and recovery of natural resources high on the agenda.This translational project aims to demonstrate an integrated process for leachate treat went and resource recovery. It involves three innovations: a novel physical pre-treatment, enhanced treatment with adaptively evolved microbial consortia and resource recovery through efficient biomass harvesting, and hence, contributing to the UK circular economy. The outcomes cut across several NERC research priority themes e.g. 'sustainable use of natural resources' and 'environment, pollution and human health.'Leachate can vary considerably in composition, depending on the age and type of waste within the landfill, containing both dissolved and suspended organic and inorganic material. Viridor Waste Management Ltd is the third largest waste management organisation in the UK, owning over 40 sites. Approximately half the sites use foul sewers to carry contaminated wastewater to a sewage works for treatment, the rest is either transported using tankers or released to surface waters. The total annual leachate production is 1,056,716 m3 and the operational costs vary between £4-£10 per m3 (e.g. disposal costs, energy or chemicals used). The previous work includes isolation of natural microbial consortia from leachate, novel harvesting method development and estimation of potential resources recovered. The main translational activities in this project are to design and build a pilot scale photobioreactor that is fitted with all the innovations from previous NERC and non-NERC funded research. This will be installed by Varicon Solutions, TUOS Research Technician and staff at Viridor at a local landfill site (Erin). Pre-processed leachate will be fed into the photobioreactor and growth and operating parameters carefully monitored. The data will be used in a techno economic assessment for Viridor but also other end-users. An easy-to-use Resource Recovery calculator will also be created. The process will be filmed in time-lapse and used to make a video for marketing, knowledge exchange and educational purposes. Both the video and photobioreactor system will be demonstrated at a relevant Trade Show in late 2017/early 2018.The ultimate aim is to demonstrate the progress of the NERC funded research up technology readiness levels with industrial, societal and environmental impact, together with economic benefits for the project partner and wider waste management community.