深度脱水污泥无辅料好氧发酵工艺研究
Aerobic Fermentation Process of Deep Dewatering Sludge without Auxiliary Materials
卜超 1李地超 1林立森 1吴玉凤1
作者信息
- 1. 中建能源管理(辽宁)有限公司,沈阳 110006
- 折叠
摘要
针对常规污泥好氧发酵工艺中存在的辅料添加量大、物料成本高等问题,采用"空化破壁+超超高压脱水技术"进行污泥深度脱水,以深度脱水后的污泥为原料,应用罐式好氧发酵设备,进行污泥无辅料好氧发酵中试.结果表明:采用"空化破壁+超超高压脱水技术"将污泥含水率控制在50%,混料粒径小于30 mm时,不添加辅料,纯污泥也可进行好氧发酵.发酵结束后,各项指标均符合《污泥农用污染物控制标准》(GB 4284-2018),满足土地安全利用的要求;且发酵时间短、物料成本大幅降低,为进一步推广市政污泥的无辅料好氧发酵技术提供了有力支撑.
Abstract
In response to the problems of large amount of auxiliary materials and high material cost in the conventional aerobic fermentation process of sludge,the"cavitation wall breaking+ultra-high pressure dewatering technology"is adopted for deep sludge dewatering.The sludge after deep dewatering is used as the raw material,and a tank-type aerobic fermentation equipment is utilized to conduct a pilot test of anaerobic fermentation of sewage sludge without auxiliary materials.The results show that using"cavitation wall breaking+ultra-high pressure dewatering technology"to control the sludge moisture content at 50%and the mixed particle size less than 30 mm,without adding auxiliary materials,pure sludge can also undergo aerobic fermentation.After fermentation,all indicators meet the requirements for land safety utilization in the"Control Standards for Pollutants in Sludges from Agricultural Use"(GB 4284-2018);Moreover,the short fermentation time and significant reduction in material costs provide strong support for further promoting the anaerobic fermentation technology of municipal sludge without auxiliary materials.
关键词
深度脱水污泥/好氧发酵/无辅料Key words
deeply dehydrated sludge/aerobic fermentation/without auxiliary materials引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据