With the rapid development of industrial production, the problem of groundwater pollution in China has become increasingly prominent, and the impact of groundwater pollution on the environment and economic development is increasingly exposed. Therefore, strengthening the management of groundwater pollution and the development of corresponding technologies has become an urgent need. Objectively speaking, China has done a lot of basic work on groundwater pollution investigation and groundwater pollutant transfer and transformation model, but there are not many specific groundwater pollution control technologies, and foreign countries, especially European and American countries Since the 1970s, great progress has been made in the treatment of groundwater point source pollution, and gradually developed more systematic groundwater pollution control technologies. The groundwater pollution treatment technologies are summarized as follows: physical treatment method, hydrodynamic control method, extraction treatment method, and in-situ treatment method. Groundwater Pollution Treatment Technology Method Research 1, physical law The physical method is a method of physical treatment of contaminated groundwater. In summary, it can be divided into: (1) Shielding method The law establishes various physical barriers underground and traps contaminated water bodies to prevent the further spread of pollutants. The commonly used mortar curtain method uses pressure to pour the grout into the ground to form a curtain around the contaminated water, thereby trapping the contaminated water. Other physical barrier methods include mud water blocking walls, vibration pile water blocking walls, sheet pile water blocking walls, block replacement, membrane and synthetic material curtain trapping methods, etc. The principles are similar to the mortar curtain method. In general, the physical screening method can only be considered as a permanent sealing method when dealing with small-scale highly toxic and difficult-to-degrade pollutants. In most cases, it is only used in the initial stage of groundwater pollution control. A temporary control method. (2) Passive collection method The method is to dig a sufficiently deep channel downstream of the groundwater flow, to arrange a collection system in the ditch, to collect contaminants floating on the surface of the water, such as oil pollutants, or to collect all contaminated groundwater for treatment. Ways. Passive collection methods are generally effective when dealing with light pollutants (such as oils, etc.) and have been widely used in the United States to treat groundwater oil pollution. If you purchase a power assisted Electric Bicycle, the bicycle shop owner will definitely recommend a suitable size for you based on your height and configuration preferences. What size of electric scooter to choose? Height is an unavoidable factor. Although the saddle can be adjusted up and down, it depends on the size of the frame to a certain extent. In most cases, E Bike Shops will have a size that suits you. If you have special requirements for the size of Electric Bicycles, you can also submit your requirements to the bicycle shop owner. There are generally two sizes of bicycles in our home, one is suitable for 15 inches in height ranging from 160cm to 170cm, and the other is suitable for heights above 175cm. In addition to height, there are certain requirements for choosing a Lithium Battery Electric Bike based on the weight of the rider. You can communicate with the bicycle shop owner carefully according to your actual situation.The bicycle shop owner will definitely give you appropriate purchasing suggestions. Mid Drive Motor,Electric Bicycle Distance,Fast Cheap Electric Dirt Bike Ejoysport Technology (SuZhou)Co.,LTD , https://www.ejoysportbike.com
Method Integration | Groundwater Pollution Treatment Technology Method Research