为解决酿酒沼渣的资源化问题，采用热解法制备沼渣生物炭，通过批量吸附试验和盆栽试验考察其吸附性能和土壤改良性能.结果表明：700 ℃下限氧热解1.5 h所制备的高钙沼渣生物炭，初始pH为10时，吸附量最大，投加10 g·L^-1的沼渣生物炭对实际废水COD、NH₄ ⁺-N和TP的去除率分别可达45.29%、56.10%和86.33%，吸附符合拟一阶动力学模型和Langmuir等温吸附，属于物理吸附.吸附后生物炭表面C、N、P、O元素含量显著增加，出现新的N-H、P=O基团.当投加5%的吸附后生物炭时，土壤中速效磷、速效钾及有机质的含量均显著提高，小白菜生长得到促进.本研究探索了“一处理两用”的策略，为酿酒沼渣处置和资源回收提供了一种本土方法.

In order to solve the problem of resource utilization of brewing biogas residue, the biochar prepared by brewing biogas residue was added into garden soil. A batch incubation and absorption experiments were carried out with the amended soils to study the improvement of biochar addition on adsorption availability and soil physicochemical properties. Results show that: the high calcium biochar prepared by oxygen limited pyrolysis method at 700 ℃ for 1.5 h behaved best with initial pH 10, the removal rates of COD, NH₄ ⁺-N and TP in actual wastewater by adding 10 g·L^-1 biogas biochar can reach 45.29%, 56.10% and 86.33%, respectively. Langmuir isothermal model and pseudo-first-order kinetic equation were more consistent with its adsorption characteristics, indicating the physical adsorption were the main adsorption modes. The contents of C, N, P and O elements on the biochar surface increased significantly with new N-H and P=O groups generated after the adsorption. The available phosphorus, available potassium and organic matter in soil were significantly increased with 5% of adsorbed biochar added which could promote the growth of Chinese cabbage well. This study explored a ‘one treatment but two uses’ approach, which provides an application prospect for the disposal and resource recovery of biogas residue.