How Integrated urban water management by coupling iron salt production and application with biogas upgrading?
The integrated urban water management by coupling iron salt production and application with biogas upgrading involves several steps:
1. Iron salt production: Iron salt is produced from iron ore and used as a coagulant in wastewater treatment. The production process involves the extraction of iron from iron ore and the subsequent reaction with an acid to produce the iron salt.
2. Coagulation and flocculation: The iron salt is then used as a coagulant in the wastewater treatment process. It helps to remove suspended solids, organic matter, and nutrients from the wastewater.
3. Biogas production: The organic matter removed from the wastewater during the treatment process is then used to produce biogas through anaerobic digestion. Biogas is a renewable energy source that can be used for various purposes such as electricity generation, heating, and cooking.
4. Biogas upgrading: The biogas produced is then upgraded to remove impurities such as carbon dioxide and hydrogen sulfide. This process increases the energy content of the biogas and makes it suitable for use as a transportation fuel or for injection into the natural gas grid.
By coupling iron salt production and application with biogas upgrading, this integrated approach to urban water management can achieve both wastewater treatment and energy recovery in a sustainable and cost-effective manner.
如何通过将铁盐生产和应用与沼气升级相结合来实现城市水资源综合管理
通过将铁盐生产和应用与沼气升级相结合,实现城市水资源综合管理,包括几个步骤:
1.铁盐生产:铁盐由铁矿石生产,用作废水处理中的混凝剂。生产过程包括从铁矿石中提取铁,然后与酸反应生成铁盐。
2.混凝和絮凝:然后在废水处理过程中使用铁盐作为混凝剂。它有助于去除废水中的悬浮固体、有机物和营养物质。
3.沼气生产:污水处理过程中去除的有机物通过厌氧消化产生沼气。沼气是一种可再生能源,可用于发电、供暖和烹饪等多种用途。
4.沼气升级:然后对生产的沼气进行升级,以去除二氧化碳和硫化氢等杂质。这一过程增加了沼气的能量含量,使其适合用作运输燃料或注入天然气管网。
通过将铁盐生产和应用与沼气升级相结合,这种城市水资源管理的综合方法可以以可持续和成本效益高的方式实现废水处理和能源回收。