改性生物炭对水体中磷的吸附研究
摘 要
随着社会的发展，水体的富营养化问题已普遍存在。其中以磷为主要污染物的废水排放更加剧了藻类的过度生长问题是富营养化的主要原因，目前常见的除磷方法主要有以下几种：吸附法、生物除磷法、化学沉淀法、离子交换法等，其中吸附法综合效益最高，而生物炭因其具有可获得性高、成本低、环保，比表面积大、孔隙结构复杂的特点，成为使用最多的吸附材料之一。生物炭的改性有利于增强其吸附能力。目前常用的改性方法主要为物理法，化学法和生物法。本实验采用一种新的实验方法，即铁盐和水泥混合固相改性生物炭的方法，以提高其吸附性能，提高其利用价值。
关键词：生物炭，改性方法，除磷
Abstract
With the increasing frequency of human activities, the problem of eutrophication of water bodies has become widespread. Among them, the discharge of wastewater with phosphorus as the main pollutant exacerbates the problem of excessive growth of algae, which is the main reason for eutrophication. The current common phosphorus removal methods are mainly the following: adsorption method, biological phosphorus removal method, chemical precipitation method, Ion exchange method, etc. Among them, the adsorption method has the highest comprehensive benefits, and biochar has become one of the most widely used adsorption materials due to its high availability, low cost, environmental protection, large specific surface area, and complex pore structure. The modification of bioch.
Biochar is conducive to enhancing its adsorption capacity. The currently used modification methods are mainly physical, chemical and biological methods. This experiment adopts a new experimental method, namely the method of solid phase modification of biochar by mixing iron salt and cement to improve its adsorption performance and its utilization value
Key words：wood ; Biochar, modification method, phosphorus removal
1 引言
随着人类活动的日益频繁，在追求社会经济发展的同时，对生态环境也造成了巨大的破坏，尤其是珍贵的水体环境，富营养化问题已普遍存在，磷元素是引起水体富营养化的主要原因，当水体中磷的浓度大于0.2mg/L时，水体便开始富营养化进程[1]。我国作为一个人均淡水资源较少的国家，水体富营养化问题更使得淡水资源的利用受到限制[2]。因此，探索一种高效地控制水体含磷量的方法成为保护水体资源的迫切需要。
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