EFFECT OF EXOGENOUS ADDITIVES ON PHOSPHORUS MOBILIZATION IN PHOSPHORUS-RICH COMPOSTING OF KITCHEN WASTE
-
摘要: 针对餐厨废弃物堆肥速效磷含量低、添加低品位磷矿粉的活化效率有限的问题,在富磷餐厨废弃物堆肥(添加磷矿粉处理,CP)基础上,分别添加表面活性剂(CSP)、解磷菌(CMSP)、生物炭(CBMSP),探究不同外源添加剂对餐厨废弃物富磷堆肥磷素转化的影响。结果表明:1)经过35 d的好氧堆肥,CSP、CMSP、CBMSP处理较CP速效磷增量分别提升2.00%、9.00%、39.00%,解磷菌与生物炭、表面活性剂共同添加显著促进难溶性磷活化效率(P<0.05),达到16.00%;2)CMSP处理堆肥产品中细菌数量较CP处理显著提升(P<0.05),增加至CP的1.85倍,生物炭添加进一步提高了餐厨废弃物堆肥产品放线菌和真菌丰度,分别达到CP的1.56,10.66倍,说明表面活性剂、生物炭与解磷菌共同添加有助于改善堆肥微生物生长环境,促进微生物生长;3)相关性分析表明,微生物量磷(MBP)与速效磷、真菌丰度均在CMSP和CBMSP中呈显著相关(P<0.01),表面活性剂、解磷菌接种和生物炭协同添加可通过强化微生物量磷累积促进难溶性磷矿粉的活化。该成果可为提升堆肥养分资源和难溶性磷利用效率提供有效途径。Abstract: Aiming at the problems of low available phosphorus content of kitchen waste compost and the limited mobilization efficiency of adding low-grade rock phosphate, this study explored the effect of different exogenous additives on phosphorus transformation in phosphorus-rich kitchen waste composting, by adding successively surfactants (CSP), phosphate-solubilizing bacteria (CMSP) and biochar (CBMSP) based on adding rock phosphate (CP). The results showed that:1) compared to CP, the increment of available phosphorus after 35 days of aerobic composting increased by 2.00%, 9.00% and 39.00% in CSP, CMSP and CBMSP treatments, respectively. The addition of phosphate-solubilizing bacteria, biochar and surfactants significantly promoted the mobilization efficiency of insoluble phosphorus to 16.00% (P<0.05); 2) the number of bacteria in compost products treated by CMSP was significantly higher than that of CP(P<0.05), which increased to 1.85 times that of CP. The addition of biochar further improved the abundance of actinobacteria and fungi in kitchen waste compost products, up to 1.56 times and 10.66 times of CP respectively. These indicated that adding surfactants, biochar and phosphate-solubilizing bacteria together could improve the microbial growth environment in compost and promote microbial growth; 3) correlation analysis showed that microbial biomass phosphorus (MBP) was significantly correlated with available phosphorus and fungi abundance in CMSP and CBMSP (P<0.01). The synergistic addition of surfactants, phosphate-solubilizing bacteria inoculation and biochar could promote the mobilization of insoluble rock phosphate by enhancing the accumulation of microbial biomass phosphorus. This study could effectively improve the utilization efficiency of compost nutrient resources and insoluble phosphorus.
-
[1] 陈婉. "十四五"固废产业将迎来新跨越[J]. 环境经济,2021(5):26-31,1. [2] 李欢,周颖君,刘建国,等. 我国厨余垃圾处理模式的综合比较和优化策略[J]. 环境工程学报,2021,15(7):2398-2408. [3] 刘维维,欧根能,陈华君,等. 浅谈餐厨垃圾资源化处理技术及运用[J]. 资源节约与环保,2020(10):136-137. [4] 许晓锋,林琦. 我国餐厨垃圾资源化处理技术现状及建议措施[J]. 环境与发展,2020,32(11):73-74. [5] 周俊,王梦瑶,王改红,等. 餐厨垃圾资源化利用技术研究现状及展望[J]. 生物资源,2020,42(1):87-96. [6] ZHANG X J, ZHAN Y B, ZHANG H, et al. Inoculation of phosphate-solubilizing bacteria (Bacillus) regulates microbial interaction to improve phosphorus fractions mobilization during kitchen waste composting[J]. Bioresource Technology, 2021, 340:125714. [7] 詹亚斌,魏雨泉,陶兴玲,等. 耐高温油脂降解菌株的筛选、鉴定及其在好氧堆肥中的应用[J]. 环境污染与防治,2021,43(7):812-818. [8] ZHAN Y B, ZHANG Z Y, MA T T, et al. Phosphorus excess changes rock phosphate solubilization level and bacterial community mediating phosphorus fractions mobilization during composting[J]. Bioresource Technology, 2021, 337:125433. [9] 魏自民,王世平,席北斗,等. 生活垃圾堆肥对难溶性磷有效性的影响[J]. 环境科学,2007,28(3):679-683. [10] 魏自民,席北斗,王世平,等. 高温解磷菌对堆肥所添加难溶性磷素转化的试验研究[J]. 环境科学,2008,29(7):2073-2076. [11] GERMAN A ESTRADA-BONILLA, ADEMIR DURRER, ELKE J B N CARDOSO. Use of compost and phosphate-solubilizing bacteria affect sugarcane mineral nutrition, phosphorus availability, and the soil bacterial community[J]. Applied Soil Ecology, 2020,157:103760. [12] 李荣华,涂志能,ALI A, 等. 生物炭复合菌剂促进堆肥腐熟及氮磷保留[J]. 中国环境科学,2020,40(8):3449-3457. [13] 黄家庆,叶菁,李艳春,等. 生物炭对猪粪堆肥过程中细菌群落结构的影响[J]. 微生物学通报,2020,47(5):1477-1491. [14] YIN Y N, GU J, WANG X J, et al. Effects of rhamnolipid and Tween-80 on cellulase activities and metabolic functions of the bacterial community during chicken manure composting[J]. Bioresource Technology, 2019, 288:121507. [15] LI G, ZHU Q H, NIU Q Q, et al. The degradation of organic matter coupled with the functional characteristics of microbial community during composting with different surfactants[J]. Bioresource Technology, 2021, 321:124446. [16] WEI Y Q, WANG J, CHANG R X, et al. Composting with biochar or woody peat addition reduces phosphorus bioavailability[J]. Science of the Total Environment, 2020, 764:142841. [17] WEI Y Q, ZHAO Y, WANG H, et al. An optimized regulating method for composting phosphorus fractions transformation based on biochar addition and phosphate-solubilizing bacteria inoculation[J]. Bioresource Technology, 2016, 221:139-146. [18] XIE X Y, ZHAO Y, SUN Q H, et al. A novel method for contributing to composting start-up at low temperature by inoculating cold-adapted microbial consortium[J]. Bioresource Technology, 2017, 238:39-47. [19] ZHAO Y, LU Q, WEI Y Q, et al. Effect of actinobacteria agent inoculation methods on cellulose degradation during composting based on redundancy analysis[J]. Bioresource Technology, 2016, 219:196-203. [20] 韩晓日,温秋香,李娜,等. 棕壤有机无机磷分级方法的比较研究[J]. 沈阳农业大学学报,2011,42(6):692-697. [21] MUELLER T, JOERGENSEN R G, MEYER B. Estimation of soil microbial biomass C in the presence of living roots by fumigation-extraction[J]. Soil Biology and Biochemistry, 1992, 24(2):179-181. [22] BROOKES P C, POWLSON D S, JENKINSON D S. Measurement of microbial biomass phosphorus in soil[J]. Soil Biology and Biochemistry, 1982, 14:319-329. [23] HEDLEY M J, STEWART J W B, CHAUHAN B S. Changes in inorganic and organic soil phosphorus fractions induced by cultivation practices and by laboratory incubations[J]. Soil Science Society of America Journal, 1982, 46(5):970-976. [24] PHUONG-THI N G O, CORNELIA R, QUOC-ANH N G O, et al. Biological and chemical reactivity and phosphorus forms of buffalo manure compost, vermicompost and their mixture with biochar[J]. Bioresource Technology, 2013, 148:401-407. [25] 吴璐璐,柳小琪,张泽兴,等. 吉林省典型土壤磷素形态及有效性[J]. 西北农业学报,2021,30(5):737-745. [26] JUAN A LÓPEZ-GONZÁLEZ, MARÍA J L, MARÍA C V, et al. Tracking organic matter and microbiota dynamics during the stages of lignocellulosic waste composting[J]. Bioresource Technology, 2013, 146:574-584. [27] WEI Y Q, ZHAO Y, XI B D, et al. Changes in phosphorus fractions during organic wastes composting from different sources[J]. Bioresource Technology, 2015, 189:349-356.
点击查看大图
计量
- 文章访问数: 109
- HTML全文浏览量: 15
- PDF下载量: 1
- 被引次数: 0