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沼气工程
达禹环境工程 十年行业经验

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达禹环境-环保百科 当前位置: 达禹环境 > 环保百科 > 规模化养猪场粪污治理模式构建探讨——大型沼气池建设
规模化养猪场粪污治理模式构建探讨——大型沼气池建设
时间 : 2019-10-10 浏览量 : 12

山东达禹环境工程有限公司已在沼气工程领域深耕十年,有着丰富的行业经验,生产各种沼气设备,承接大中小各种规模的沼气工程,承建黑膜沼气池红泥膜沼气池等各种软体沼气池及双膜气柜、集雨窑等,同时生产加工各类液袋水囊、桥梁预压水袋、森林消防水袋、可拆卸游泳池等,欢迎新老客户洽谈合作,共谋发展!


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本技术工艺最大特点是多项污水治理技术以及资源化利用技术的集成与创新,主要包括以下4个方面:1)实施干清粪,应用福建省农科院自主研发FZ-12固液分离机作为前处理固液分离;2)采用推流式大型沼气池厌氧发酵彩经网和微曝气生物滤池技术相结合处理粪污水;3)大型沼气池厌氧发酵池产生沼气、沼液经过净化处理后进入温室大棚应用;4)干清粪猪粪和固液分离后产生粪渣进行大型沼气池厌氧干发酵装置中堆肥发酵处理。  综上所述,根据循环经济原理,依据规模化养猪场粪污特性,本工艺技术采用沉砂池固液分离酸  化池-大型沼气池厌氧发酵池-好氧池-沉淀池-氧化塘技术相结  合以及沼气、沼渣、沼液的综合循环利用。其主要工艺流程见图1。


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微曝气生物滤池采用混凝土浇筑,长方体结构设计容积100m3,长x宽x高为20.0mx2.5mx2.0m。采用聚丙烯ZH901弹性立体填料,安装间隔150mm,填料成膜后重量60~80mg,规格为直径150mm×片距60mm。曝气方式采用底部微孔曝气,动能采用三相异步电动机(型号Y100124,电压380V,功率8kWh)。曝气设备采用Z管式微孔曝气器,微孔为“V”字型,梅花形打孔可变性好、不易破裂。该曝气器采用日本进口的EPDM( EthylenePropylene Diene Monomer)三元乙丙橡胶、改良塑料增强化纤生产而成,规格c65mmx650mm,安装间隔500mm。经特殊加工软管周径都有气孔,应用国外抗浮力先进技术,两头四点同时进气,进气量2.5m3mh-1,风压控制在2.5kPa,曝气时在水中产生微小气泡,每天可处理水量50t。该曝气器的优点是能耗低、动力效率高、服务面积大和氧利用率。

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沼气利用系统包括贮气设备、脱硫器、阻火器、  输配管道以及用能设施、设备。猪场粪污经大型沼气池厌氧发  酵后产生的沼气,通过气水分离器脱水后进入脱硫


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