Preparation method and application method of a novel biological soil remediation agent

Abstract

The invention relates to a preparation method of a novel biological soil remediation agent. The method comprises the following steps: (1) compounding and mixing four bacteria, including anaerobic spore-bearing bacilli TIBCC1.002, micrococcus luteus TCCC23001, pseudomonas fluorescens AS1.867, Burkholderia cepacia NKCCMRNK.T2-2 according to the weight part ratio of (3-6) to (2-5) to (1-4) to (1-3) to form a compound bacterium solution, adding the compound bacterium solution according to the weight ratio of 1%-5% into active sludge, and biologically enhancing the active sludge; (2) filtering biogas slurry by a hollow fiber membrane with the pore diameter of 0.1-0.2 micron so as to obtain waste biogas slurry residues; (3) mixing the biologically enhanced active sludge with the waste biogas slurry residues according to the weight part ratio of (3-9) to (1-5), and stirring uniformly to form the novel biological soil remediation agent. The invention provides another approach for the recycling of the residual sludge and biogas slurry, so that not only can the polluted soil be remediated effectively, but also the load to the environment pollution by the residual sludge and the waste biogas slurry residues can be relieved to a certain extent; the preparation method has relatively high practical application value.

Description

technical field [0001] The invention relates to the field of soil remediation agents, in particular to a method for preparing a novel biological soil remediation agent by using excess activated sludge. Background technique [0002] At present, the land we live on has been gradually polluted by factors such as large-scale industrialization, abuse of pesticides, and random landfill of waste, which has become one of the main forms of soil degradation in my country and even in the world. The quality of the soil environment is closely related to the quality of crop products, and soil safety is directly related to the safety of residents' "vegetable baskets" and "rice bags". Therefore, it is very urgent to carry out basic research on contaminated soil remediation and develop key technologies for ecological remediation of contaminated soil. Soil remediation is facing severe practical challenges and historical development opportunities. Research on contaminated soil remediation tec...

AI Technical Summary

Problems solved by technology

[0006] Microbial (plant) / animal joint remediation technology is an in-situ soil remediation technology, which uses the growth and metabolism of microorganisms and plants or animals to specifically remove pollutants in the soil, and develops plant-degrading bacteria synergistic restoration and animal-microbial synergy. Restoration and its rhizosphere enhancement technology can promote the absorption, metabolism and degradation of organic pollutants, but this technology is highly targeted and suitable for soil restoration with less pollution. If it is aimed at heavily polluted soil, the growth of animals and plants Poor, low restoration effect

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