Negative Emission Sewage Treatment (NEST)

负排放污水处理（NEST）

• 批准号: 77722
• 金额: $ 5.7万
• 依托单位: GREENSKILL ENVIRONMENTAL TECHNOLOGY LIMITED
• 依托单位国家: 英国
• 项目类别: Small Business Research Initiative
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=77722
• 关键词: Negative; Emission; Sewage; Treatment; NEST

**NEGATIVE EMISSION SEWAGE TREATMENT (NEST)** Water quality and availability is a global challenge. Recovering the valuable resources embedded in wastewater is a key, global opportunity, and goal. 80% of all wastewater is discharged into the world's waterways where it creates economic, health, and environmental challenges. Population growth and urbanization further intensify this challenge with increasing wastewater generation that places more pressure on clean water resources. More stringent regulatory issues, and increasing environmental concerns make wastewater treatment systems (WWT) more relevant than ever and aids in the growth of this market. Moreover, growing focus on sewage treatment in countries in China, and India, provide significant opportunities in those marketplaces. **Conventional WWT technology** The WWT technology deployed in the majority of sewage farms worldwide was invented in the 1890's and has remained unchanged. It emits approximately 3% of total GHG emissions (CO2, methane and dinitrogen oxide) and is unable to effectively remove phosphates, pharmaceuticals, endocrine disruptors, poly- and perfluoroalkyl substances (PFAS) and microplastics. **NEST WWT technology** NEST is carbon negative and uses GHG emissions as a carbon and nitrogen source. Demonstrated removal of phosphates, pharmaceuticals, endocrine disruptors and microplastics. Poly- and perfluoroalkyl substances (PFAS) removal efficacy trials planned for 2020\. Produces microalgal biomass for monetisation as fertiliser and soil conditioner. Alternatively, the biomass may be hydrothermally liquefied (pressure cooked) to produce biocrude oil and a fertiliser concentrate. **POSITIVE ENVIRONMENTAL IMPACTS** Climate change mitigation through GHG emission reduction with potential for 4% reduction globally. Phosphate removal and recovery will mitigate toxic algal blooms in water bodies. Pharmaceutical, endocrine disruptor, PFAS and microplastic removal will have hugely beneficial impact on the aquatic environment, thus maintaining biodiversity.

** 负排放污水处理（NEST）** 水质和可用性是一个全球性挑战。回收废水中的宝贵资源是一个关键的全球机遇和目标。80%的废水被排放到世界水道中，造成经济，健康和环境挑战。人口增长和城市化进一步加剧了这一挑战，废水产生量增加，对清洁水资源造成更大压力。更严格的监管问题和日益增加的环境问题使废水处理系统（WWT）比以往任何时候都更加相关，并有助于该市场的增长。此外，中国和印度国家日益重视污水处理，为这些市场提供了重要机会。** 传统的污水处理技术 ** 世界上大多数污水处理场采用的污水处理技术是在19世纪90年代发明的，至今没有改变。它的排放量约占温室气体排放总量的3%（二氧化碳、甲烷和一氧化二氮），并且无法有效去除磷酸盐、药物、内分泌干扰物、多氟烷基和全氟烷基物质（PFAS）以及微塑料。**NEST污水处理技术 ** NEST是负碳的，使用温室气体排放作为碳和氮源。磷酸盐、药物、内分泌干扰物和微塑料的去除效果显著。计划于2020年进行多氟烷基和全氟烷基物质（PFAS）去除功效试验。生产微藻生物质作为肥料和土壤改良剂。或者，生物质可以水热液化（压力蒸煮）以产生生物原油和肥料浓缩物。** 积极的环境影响 ** 通过减少温室气体排放缓解气候变化，全球减排潜力为4%。磷酸盐的去除和回收将减轻水体中有毒藻类的大量繁殖。药物、内分泌干扰物、PFAS和微塑料的去除将对水环境产生巨大的有益影响，从而维护生物多样性。