CN111909844B - 一种废弃矿井沼气发酵制肥系统及其使用方法 - Google Patents

一种废弃矿井沼气发酵制肥系统及其使用方法 Download PDF

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CN111909844B
CN111909844B CN202010917767.6A CN202010917767A CN111909844B CN 111909844 B CN111909844 B CN 111909844B CN 202010917767 A CN202010917767 A CN 202010917767A CN 111909844 B CN111909844 B CN 111909844B
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杨科
吕鑫
赵新元
付强
王于
张继强
刘文杰
池小楼
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Abstract

本发明具体公开一种废弃矿井沼气发酵制肥系统及其使用方法，包括废弃矿井改造、酶菌温控发酵、循环泵送搅拌、提升废渣制肥四个步骤：对废弃矿井进行规划设计，建造加工车间及制肥车间，钻孔铺设输送管、分流管、注料管，井下打设回流管，安装集流管、回流泵站、提升管及循环管；将厌氧活性污泥投入进料灌口，经注料管均匀喷投至采空区，加入原料液体，保持发酵温度并调节发酵液pH值，进行发酵制气；启回流管将发酵液体经回流泵站再次泵送至分流管，通过注料管再次喷投，达到额定发酵时间后，关闭回流管，开启注料管进行反向抽气；开启回流管，关闭分流管，将底部废液废渣经循环管、提升管泵送至地面出料灌口，在制肥车间内完成加工。

Description

一种废弃矿井沼气发酵制肥系统及其使用方法
技术领域：
本发明涉及废弃矿井利用及沼气发酵领域，具体涉及一种废弃矿井沼气发酵制肥系统及其使用方法。
背景技术：
秸秆等采摘后的农业废弃物往往被随意焚烧，不但造成严重的资源浪费，还会污染环境，同时随着经济的发展和城镇化进程的加快，城市人口激增，城市的污染物也在不断增加，其中部分厨余垃圾尚存在利用价值。因此，通过处理将农业废弃物及城市垃圾进行发酵，制备沼气及肥料，是一种有效的资源利用回收方式，不仅可以避免环境污染，还可带来一定的经济收益。
发酵场选址至关重要，应当毗邻城市，背靠农田，减少不必要的交通费用，而废弃矿井恰恰满足上述条件，利用地下空间进行发酵，既不影响地面生产工作，同时地下发酵也有足够的安全保障，为此，本发明提出一种废弃矿井沼气发酵制肥系统及其使用方法。
发明内容：
针对现有技术存在的问题，本发明提供一种废弃矿井沼气发酵制肥系统及其使用方法。
本发明一种废弃矿井沼气发酵制肥系统及其使用方法，其特征在于，具体包括废弃矿井改造、酶菌温控发酵、循环泵送搅拌、提升废渣制肥四个步骤：
步骤一，对已密闭处理的废弃矿井进行地面规划设计，建造加工车间及制肥车间，钻孔铺设输送管、分流管、注料管，在地面预留进料灌口，井下沿开采方向打设回流管，安装集流管、回流泵站、提升管及循环管，其中注料管采用含有升温阻丝、内壁管、外壁管的双层管结构，并且在各管道连接处安装独立阀门进行控制；
步骤二，将厌氧活性污泥投入进料灌口，经注料管均匀喷投至采空区，再加入原料液体，通过注料管的升温阻丝控制加料时的温度，保持发酵温度并调节发酵液pH值，进行厌氧发酵等待制气；
步骤三，发酵液体沿采空区坡度向下流动逐渐堆积，开启回流管将发酵液体经回流泵站再次泵送至分流管，通过注料管再次喷投，实现采空区内发酵液体的搅拌及温度控制，创造发酵合适环境，达到额定发酵时间后，关闭回流管，开启注料管进行反向抽气，并在加工车间内完成沼气提纯压缩；
步骤四，原料液体不断进行补充添加，达到额定液面高度后，开启回流管，关闭分流管，将底部废液废渣经循环管、提升管泵送至地面出料灌口，并在制肥车间内完成肥料加工。
进一步，废弃矿井四周需进行密封性测试，且在采空区内放置传感器进行发酵监测。
进一步，采空区内充填矸石需在第一次发酵前利用液体进行pH调节。
进一步，原料液体使用秸秆及厨余垃圾等废弃原料进行粉碎加水搅拌，再分批投入发酵菌剂、碳酸氢氨拌匀。
进一步，回流管端口安装有过滤网，避免大块粘结废渣堵塞回流泵站。
附图说明
图1是实现本发明一种废弃矿井沼气发酵制肥系统及其使用方法的立体示意图。
图2是图1的侧视图。
图3是双层管的立体示意图。
图中：1为地面；2为加工车间；3为进料灌口；4为输送管；5为分流管；6为注料管；7为采空区；8为煤柱；9为回流管；10为集流管；11为制肥车间；12为出料灌口；13为提升管；14为循环管；15为回流泵站；a为升温阻丝；b为内壁管；c为外壁管。
具体实施方式
下面结合附图对本发明作进一步详细的描述。
本发明通过以下技术方案实现，一种废弃矿井沼气发酵制肥系统及其使用方法，其特征在于，具体包括废弃矿井改造、酶菌温控发酵、循环泵送搅拌、提升废渣制肥四个步骤：
步骤一，对已密闭处理的废弃矿井进行地面1规划设计，建造加工车间2及制肥车间11，钻孔铺设输送管4、分流管5、注料管6，在地面1预留进料灌口3，井下沿开采方向打设回流管9，安装集流管10、回流泵站15、提升管13及循环管14，其中注料管6采用含有升温阻丝a、内壁管b、外壁管c的双层管结构，并且在各管道连接处安装独立阀门进行控制；
步骤二，将厌氧活性污泥投入进料灌口3，经注料管6均匀喷投至采空区7，再加入原料液体，通过注料管6的升温阻丝a控制加料时的温度，保持发酵温度并调节发酵液pH值，进行厌氧发酵等待制气；
步骤三，发酵液体沿采空区7坡度向下流动逐渐堆积，开启回流管9将发酵液体经回流泵站15再次泵送至分流管5，通过注料管6再次喷投，实现采空区7内发酵液体的搅拌及温度控制，创造发酵合适环境，达到额定发酵时间后，关闭回流管9，开启注料管6进行反向抽气，并在加工车间2内完成沼气提纯压缩；
步骤四，原料液体不断进行补充添加，达到额定液面高度后，开启回流管9，关闭分流管5，将底部废液废渣经循环管14、提升管13泵送至地面1出料灌口12，并在制肥车间11内完成肥料加工。
进一步，废弃矿井四周需进行密封性测试，且在采空区7内放置传感器进行发酵监测。
进一步，采空区7内充填矸石需在第一次发酵前利用液体进行pH调节。
进一步，原料液体使用秸秆及厨余垃圾等废弃原料进行粉碎加水搅拌，再分批投入发酵菌剂、碳酸氢氨拌匀。
进一步，回流管9端口安装有过滤网，避免大块粘结废渣堵塞回流泵站15。
当然，上述说明仅仅为本发明的较佳实施例，本发明并不限于上述的实施例，应当说明的是，任何熟悉本领域的技术人员在本说明书的教导下，所做出的所有等同替换、明显变形形式，均落在本说明书的实质范围之内，理应受到本发明的保护。

Claims (1)

1.一种废弃矿井沼气发酵制肥系统的使用方法，其特征在于，具体包括废弃矿井改造、酶菌温控发酵、循环泵送搅拌、提升废渣制肥四个步骤：
步骤一，对已密闭处理的废弃矿井进行地面规划设计，建造加工车间及制肥车间，钻孔铺设输送管、分流管、注料管，在地面预留进料灌口，井下沿开采方向打设回流管，安装集流管、回流泵站、提升管及循环管，其中注料管采用含有升温阻丝、内壁管、外壁管的双层管结构，并且在各管道连接处安装独立阀门进行控制；
步骤二，将厌氧活性污泥投入进料灌口，经注料管均匀喷投至采空区，再加入原料液体，通过注料管的升温阻丝控制加料时的温度，保持发酵温度并调节发酵液pH值，进行厌氧发酵等待制气；
步骤三，发酵液体沿采空区坡度向下流动逐渐堆积，开启回流管将发酵液体经回流泵站再次泵送至分流管，通过注料管再次喷投，实现采空区内发酵液体的搅拌及温度控制，创造发酵合适环境，达到额定发酵时间后，关闭回流管，开启注料管进行反向抽气，并在加工车间内完成沼气提纯压缩；
步骤四，原料液体不断进行补充添加，达到额定液面高度后，开启回流管，关闭分流管，将底部废液废渣经循环管、提升管泵送至地面出料灌口，并在制肥车间内完成肥料加工；
所述废弃矿井四周需进行密封性测试，且在采空区内放置传感器进行发酵监测；
所述采空区内充填矸石需在第一次发酵前利用液体进行pH调节；
所述原料液体使用秸秆及厨余垃圾等废弃原料进行粉碎加水搅拌，再分批投入发酵菌剂、碳酸氢氨拌匀；
所述回流管端口安装有过滤网，避免大块粘结废渣堵塞回流泵站。
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