转自：新华财经 在山东省宁阳县山东圣力牧业有限公司的牧场里，3800余头奶牛在宽敞的牛棚里悠闲踱步，每天为市场 供应70余吨生鲜牛奶。然而，伴随着醇香牛奶而来的，还有一项不容小觑的"副产品"——每头成年牛日 均约三十公斤的粪污。这些曾经让人头疼的养殖废弃物，如今却在这家牧场里开启了一场"变身之旅"。 "其实干牛粪是没有味道的。"牧场负责人王超说，为了最大限度减少异味，牧场安装了自动化清粪设 备，定时将粪污收集起来，送往干湿分离区进行处理。随后，这些物料被送入一个个巨大的分子膜发酵 床——这是循环链条上的第一环。 "我们一个发酵床能装600立方米，大概10天就全部填满了。"王超介绍。在冬季，经过12到15天的密闭 发酵，最初湿黏的粪污会变得蓬松、无异味，内部温度在短短三四天内就能升至70摄氏度以上，经过天 然的"高温消毒"，能有效杀灭虫卵和有害微生物，最终产出的，正是柔软干净的牛床垫料。 同时，液体粪污则流入场区内的两个大型厌氧发酵罐，在无氧环境下借助高温，发酵过程中产生的沼气 每天可以转化为1500到2200度电，带动牧场里144台大型风扇，为怕热的奶牛送去阵阵凉风；产生的沼 液则进入氧化塘集中储存，根据牧场 ...

Core Viewpoint - The article highlights the transformation of traditional livestock farming in Xinxing County, Guangdong Province, towards an eco-friendly and resource-recycling model, addressing pollution issues while promoting sustainable agricultural development [1]. Group 1: Transformation of Livestock Farming - Xinxing County has shifted from a "heavy farming, light governance" model to an intelligent, ecological, and resource-oriented approach, creating a "waste-free agricultural and animal husbandry" closed-loop system [1]. - The county has successfully implemented a "pig-biogas-field-fish" and "pig-biogas-forest" ecological agricultural cycle, turning waste into valuable resources [2][5]. Group 2: Resource Utilization and Economic Benefits - The high village pig farm processes waste into biogas, liquid fertilizer, and solid waste, achieving over 95% resource utilization of livestock waste [2]. - The farm's 105 acres of arable land can absorb 20 cubic meters of biogas liquid and 1 ton of pig manure per acre, resulting in a 60% utilization rate of biogas liquid and 100% for pig manure, significantly enhancing crop yield and quality [3]. Group 3: Technological Innovations - The county promotes a "company + base + farmer" model for intensive farming, leveraging IoT and big data for smart upgrades, which improves livestock growth efficiency and reduces waste generation [5]. - The introduction of solar oxygen machines and energy-efficient pumps, combined with smart control systems, optimizes energy use and reduces carbon emissions in livestock farming [7]. Group 4: Extension of Waste-Free Concept - The successful practices in the agricultural sector have led to the initiation of "waste-free county" and "waste-free agricultural town" projects, aiming to extend the waste-free concept to urban construction, industrial production, and daily consumption [8]. - The county is focused on creating a model that balances ecological and economic benefits, with ongoing improvements in the "waste-free agricultural" model expected to provide replicable experiences for other regions [8].