As a clean energy, biogas is flammable, explosive and toxic. At present, the large-scale use of biogas in rural areas to replace traditional bio-energy such as straw and firewood, the comprehensive benefits are increasingly apparent, but due to non-standard operation and other reasons, there are also some potential safety hazards. Biological desulfurization of biogas reminds you that the safety of biogas should pay attention to the following problems.

严防沼气火灾和爆炸禁止向沼气池内投放各种剧毒农药、杀菌剂等毒性物质或骨粉、动物尸体等含磷物质，以防产生对人体有严重危害的剧毒气体磷化氢。使用沼气时，池口周围严禁玩火，如在室内闻到臭鸡蛋味或发现漏气时，应迅速打开门窗，将沼气排出室外，禁止吸烟、使用明火或开关电源，以防引起火灾。严禁用明火检查沼气开关、接头处的漏气情况，切勿在沼气导气管口试气，以免造成回火引发爆炸。

It is strictly forbidden to throw various toxic pesticides, fungicides and other toxic substances or phosphorus-containing substances such as bone meal, animal corpses into the biogas digester in order to prevent the production of phosphine, a highly toxic gas which has serious harm to human body. When using biogas, it is strictly forbidden to play with fire around the mouth of the pond. If smelling bad eggs or finding air leakage in the room, the doors and windows should be opened quickly, the biogas should be discharged out of the room, and smoking, using open fire or switching power supply should be prohibited in order to prevent fire. It is strictly forbidden to use open fire to check the leakage of gas at the gas switch and joint. Do not test gas at the gas duct mouth of the gas, so as not to cause tempering and explosion.

定期开展日常维护沼气池清掏维修必须一律由专业人员实施，严禁沼气用户擅自入池清掏和维修作业。经常用蘸有洗衣液或肥皂水的毛刷检测输气管道开关、接头和弯管，对存在问题的配件在关闭气源总开关后，及时进行维修或更换。经常观察沼气压力表水柱的变化，当沼气池产气旺盛，池内压力过大时，要立即用气、放气或从出料间抽出部分料液，以防胀坏气箱冲开池盖，造成事故。同时，保持沼气池活动盖的养护水不干涸，以免活动盖的密封黏土破裂漏气，毒害人畜。

Regular maintenance of digging and repairing of biogas digesters must be carried out by professionals. It is strictly forbidden for users of biogas to enter digging and repairing without authorization. Gas pipeline switches, joints and elbows are often detected with a brush dipped in laundry liquid or soapy water. The defective fittings are repaired or replaced in time after closing the main air switch. Always observe the change of water column of methane pressure gauge. When the methane digester produces gas vigorously and the pressure in the digester is too high, it is necessary to use gas, exhaust gas or extract part of material liquid from the discharging room immediately in order to prevent the expansion of the gas tank from breaking the lid of the digester and causing accidents. At the same time, keep the maintenance water of the movable cover of the biogas digester dry, so as to prevent the sealing clay of the movable cover from breaking and leaking, and poisoning livestock.

遇池内人员昏倒不可盲目施救在人员下池维修过程中，如有头痛、头昏、恶心、呕吐或感觉身体有不适状况时，应立即离开现场。一旦发生池内人员昏倒，应立即采用人工办法向内输送新鲜空气，切不可盲目下池抢救，以免发生连续窒息中毒事故;窒息人员及时救出池外后，应抬到地面阴凉通风处，解开上衣和裤带，注意保暖，并就近送医院抢救。

In case of fainting, people in the pool can not be rescued blindly. In the process of repairing, if they have headache, dizziness, nausea, vomiting or feel uncomfortable, they should leave the scene immediately. In case of fainting, fresh air should be conveyed to the pool by manual means immediately, so as not to be rescued blindly, so as to avoid a continuous suffocation poisoning accident. After the suffocation personnel rescue the pool in time, they should be lifted to the shady and ventilated place on the ground, unlock their jackets and trousers, pay attention to keeping warm, and send them to the nearest hospital for rescue.

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