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《养殖与饲料．饲料世界》2020,(4)
猪场污水治理的费用一直居高不下,既制约养猪业的持续发展,又影响环境保护。本文介绍了猪场污水治理的主要措施:节流和开源,利用节约用水来降低猪场处理污水的费用;通过建立农业、林业种植微信群,为猪粪还田搭建平台,为猪场污水无害化治理提供一条经济、高效的新通道。 相似文献
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粪污处理模式的选择是影响猪场可持续性发展的重要因素之一,文章对国内规模化猪场粪尿清理、污水处理、末端还田利用等环节进行了系统阐述,对比分析了不同粪尿清理及污水处理方式下还田利用的效果及投资运行成本。规模化猪场污水处理首选种养结合模式,当污水不具备资源化利用条件时可选择达到农田灌溉标准的经济、高效污水处理模式。对于用于农田灌溉用水的污水处理,从投资和运行成本考虑优先选择水泡粪+污水预处理+UASB+A/O模式,土地资源不足情况下选择干清粪+污水预处理+UASB+A/O处理模式。采用沼液还田时,若配套土地面积充足,可选择水泡粪+污水预处理+黑膜沼气处理模式,配套土地面积不足时选择干清粪+污水预处理+黑膜沼气处理模式。 相似文献
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治理猪场污水排放是环境保护方面的一大难题,通过对北票地区规模猪场及中小型养猪户的实地调查,发现在猪用饮水器和水冲圈两方面都浪费了大量水资源,同时产生等量的污水,增加猪场污水排放治理的难度。同时在经过处理、降解的猪场污水与对接排放农田方面,北票地区还没有形成有效的共享管理平台,制约猪场污水的安全、有序排放。本文详细地分析当前治理猪场污水排放的瓶颈,提出了截流、开源等综合治理措施,为进一步完善猪场污水治理,保障生猪生产安全有序,提供建设性、可供参考的实施方案。 相似文献
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1物理处理法
物理处理法主要利用物理作用,将污水中的有机物、悬浮物、油类及其他固体物质分离出来.
过滤法主要是污水通过具有孔隙的过滤装置以达到使污水变得澄清的过程,是猪场污水处理工艺流程中必不可少的部分,常用的简单设备有格栅或网筛.猪场过滤污水采用的格栅由1组平行钢条组成,略斜放于污水通过的渠道中,用以清除粗大漂浮和悬浮物质,如饲料袋、塑料袋、垫草等,以免堵塞后续设备的孔洞、闸门和管道. 相似文献
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养猪场的规模愈大,猪场排放的废物就愈多,如何处理这些废物成为每个规模化养猪场需要考虑的问题,对猪粪便和污水的循环利用处理是猪场粪污最经济合理的治理方法。1粪污处理现状目前,我国养猪场对猪粪污处理采取的是传统的还田方法,即将猪粪作为有机肥料,返还到农田 相似文献
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双穗雀稗对猪场污水的净化效果 总被引：1，自引：0，他引：1
于2009年5月以双穗雀稗(Paspalum distichum L.)为供试材料、河砂为基质开展其为期30d的静态水培试验,研究在25%、50%、75%、100%共4种猪场养殖污水浓度下,双穗雀稗的生长状况及对污水的净化效果,选择适宜的猪场养殖污水浓度以提高双穗雀稗的净化效率和生产效率。结果表明,污水浓度增加对双穗雀稗的株高影响不显著,但对生物量具有显著影响(P<0.05),高浓度污水对根长的生长具有明显阻碍作用;与不栽种植株的静置组相比,双穗雀稗水培对污水中的总氮(TN)、总磷(TP)具有较好的去除效果,TN的去除率为98.75%-99.31%,TP的去除率为96.54%-99.79%。100%污水时,TN、TP的去除量最大,分别为507 mg·L-1和32mg·L-1;而对COD和NH4+-N的去除效果并不显著。 相似文献
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To remove the excess nitrogen and phosphorus in swine wastewater, an electrodialysis technique was applied to an advanced treatment method. The laboratory‐scale swine wastewater treatment system constructed for the present study consisted of an activated sludge process, as the main treatment unit, and electrodialysis, as an advanced treatment unit. This system was operated for 200 days and the processing performance was evaluated. By electrodialysis, approximately 99% of NO3– and PO43– in the activated sludge‐treated water (AT solution) was removed during operation. Furthermore, electrodialysis decreased the color density of the AT solution at a rate of 58%. The advanced treatment of swine wastewater by electrodialysis proved to be an efficient technique to remove excess nitrogen and phosphorus, and decrease color density. 相似文献
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Campbell TA Long DB Lavelle MJ Leland BR Blankenship TL Vercauteren KC 《Preventive veterinary medicine》2012,104(3-4):249-257
We studied the effects of baiting on feral swine (Sus scrofa) movements and corresponding likelihood of disease spread under real and simulated culling pressure. Our objectives were to determine the proportion of feral swine that used the bait station site, and if baiting of feral swine altered areas of utilization, distances from location centroids to treatment location (control or bait station), and movement rates by survivors during culling activities. We hypothesized that the bait station would increase the sedentary nature of feral swine, thus reducing the potential for dispersal and hence disease dispersal. Our experiment was conducted between February and May 2011 on the Rob and Bessie Welder Wildlife Foundation (WWF) in San Patricio County, Texas. We trapped 83 feral swine and placed GPS collars on 21 animals. We established and maintained a centralized bait station on one side of the WWF from 13 March to 27 April. We conducted population-wide culling activities, including trapping, controlled shooting, drive shooting, and aerial gunning, from 3 to 27 April and removed 143 feral swine (4.6feral swine/km(2)). Areas of utilization did not differ between treatments (control or bait station). However, we found location centroids of bait station site feral swine to be closer to the treatment location than those of control site animals and daily movement rates of bait station site feral swine to be 39% greater than movement rates of control site animals. Based on our observation that only 62% of feral swine trapped in proximity to the bait station used it, we cannot recommend baiting as an alternative to fences for containing animals during culling activities. However, there is value in using bait stations to describe patterns of feral swine movements, facilitate observation, and improve efficacy when conducting removals. 相似文献
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W.Q. Alali H.M. Scott K.L. Christian V.R. Fajt R.B. Harvey D.B. Lawhorn 《Preventive veterinary medicine》2009,90(3-4):160-167
The objective of this longitudinal ecological study was to examine the relationship between the prevalence of antibiotic-resistant (AR) commensal Escherichia coli isolates from both monthly human wastewater and composite swine fecal samples and the concurrent aggregated monthly antibiotic use recorded within each host species in multi-site vertically integrated swine and human populations. In addition, human vocation (swine worker versus non-swine worker), swine production group, and season were examined as potential confounding variables. Human and swine E. coli isolates (n = 2469 human and 2310 swine, respectively) were tested for antimicrobial susceptibility using a commercial broth microdilution system. In the human population, among swine workers the relative odds of tetracycline resistance were increased significantly for tetracycline (class) drug use at the third quartile and above of mean monthly dosage (MMD) (OR = 1.8) as compared to the referent category (non-use). The relative odds of ciprofloxacin resistance were significantly increased for ciprofloxacin use in non-swine workers (OR = 5.5) as compared to the referent (non-use). The relative odds of tetracycline resistance were increased significantly for chlortetracycline use in medicated feed for the upper tertile of MMD category (OR = 2.9) as compared to the referent category (no use) across all swine production groups. While high variability among seasonal samples over the 3-year period was observed, no common seasonal trends relating to antibiotic use and prevalence of resistance over the 3-year period were apparent. The overall effects of concurrent human and swine antibiotic use on AR E. coli levels were inconsistent and modest in this study. 相似文献
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针对猪场废水中氮磷含量高的问题,探讨了沸石吸附交换法去除氨氮和总磷的效果及可行性。试验结果表明,当沸石粒径为1～2mm,投加量为12g/L,反应时间为20min时,含氨氮66.6mg/L,总磷7.8mg/L的某猪场废水处理工程的排水经深度处理后,出水中氨氮和总磷的含量可以达到《农田灌溉水质标准》(GB5084-92)和《生活杂用水水质标准》(CJ/T48-1999)的要求。沸石作为猪场废水深度脱氮除磷的吸附交换剂是可行的。 相似文献
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规模化猪场粪污处理技术研究进展 总被引：13，自引：0，他引：13
我国规模化猪场的兴起与粪污处理的相对滞后，使养殖业对环境的污染日益严重，畜牧场的污染问题已越来越受到人们的关注和重视。通过营养调控的方式可以提高动物对养分利用率，从而减少动物代谢废物的排泄量，但动物的粪污排泄量仍大大超出环境的承受能力，因此必须加强猪场废弃物和污水的综合治理。本文就国内外粪污处理技术和(粪)污水处理的工艺等方面研究近况作一综述。 相似文献
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贯彻科学发展观,发挥草业多功能 总被引：3，自引：0，他引：3
阐述了科学发展观要求资源保护与社会发展相协调,生态与经济相协调的观点。提出草业作为一个新兴产业,关系国家生态安全和发展绿色经济的全局,要抓住机遇,推进发展。强调要充分发挥草的生态屏障功能,确保国家生态安全;充分发挥草的经济功能,确保草业产业化顺利推进;充分发挥草的人文社会和其他功能,促进资源利用,推动社会进步;加大宏观政策研究力度,促进现代草业发展。 相似文献
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我国猪瘟流行新特点与疫苗免疫研究 总被引：3，自引：0，他引：3
对我国的猪瘟流行的新特点进行了描述,详细分析了造成猪瘟疫苗免疫失败的6大原因,并且对疫苗的发展历史和研究进展进行了详细介绍,提出了猪瘟防控的两个关键环节为种猪群野毒感染的控制及有效的免疫接种。 相似文献