This article mainly introduces the in situ biogas technology of soil remediation technology in contaminated sites.
Biological ventilation method is a forced oxidation of in situ biodegradation method. That is forced into the contaminated soil air, volatile organic matter together and then discharged into the gas processing unit for subsequent treatment or directly into the atmosphere. This method is often used in the upper part of the groundwater layer is better permeability of volatile organic compounds contaminated soil repair, but also applies to loose porous soil structure, in order to facilitate the growth and reproduction of microorganisms.
Generally, before aeration is used to treat the soil, first of all, two or more wells should be drilled in the contaminated soil. When air is aerated, a certain amount of nitrogen is added as a nitrogen source for growth of the degrading bacteria to improve the treatment effect. In contrast to vacuum extraction of soil steam, it uses a lower air flow rate and only provides enough oxygen to maintain microbial activity. Oxygen is supplied to the soil for residual contamination by direct air injection. In addition to degrading adsorbed contaminants, volatile compounds are biodegraded as the air flows slowly through the bio-active soil.
The technology is characterized by:
(1) The presence of water levels within a few feet of the surface, saturated soils, or low permeability soils can affect biological ventilation.
(2) Lower soil moisture content may limit biodegradation and ease of drying soil to affect the effectiveness of biological aeration.
(3) This technology has been successfully applied to soils contaminated with petroleum hydrocarbons, non-chlorinated solvents, certain pesticide preservatives and other organic chemicals.
(4) The soil structure of the site has a great influence on this technology.
The repair cost of this technology is 55-300 $ / m3, the repair cycle is 6-24 months, the pollutants that can be removed are non-halogenated volatile organic compounds, non-halogenated semi-volatile organic compounds, fuels . Pollutant removal rate> 90%.
Smart Essential Oil Aroma Diffuser
- SMART WI-FI TECHNOLOGY: This incredible smart diffuser uses the latest technology so you can perfectly control it just by using an app! Download the TuyaSmart app that is suitable for every smartphone and tablet for your convenience, and turn the smart aroma diffuser on and off or change the mode. The smart essential oil diffuser is compatible with Amazon Echo and Google home, so it can operate with Alexa for easy use.
- RELAXING ATMOSPHERE: This smart oil diffuser is perfect for every home, office, hotel, yoga studio so you can create a calming atmosphere. This device will purify and humidify the air so you will no longer suffer from dry skin and lips. The wifi diffuser will create the perfect environment so you can breathe and sleep better, relax, and feel better than ever!
- ADJUST IT TO YOUR NEEDS: The air purifier has a large capacity of 400ml so it can work through the night for best results. The light of the diffuser can be turned off or dimmed so it will never disturb your sleep. The Air Humidifier can set schedule timers and countdown timers through TuyaSmart app, so you can adjust it to your needs for maximum results every time.
- PERFECTLY SAFE: The Dituo aroma diffuser is completely toxic-free so it can be absolutely safe for everyone, even small babies! You can safely use it on a daily basis in your space and even while you` re sleeping for a better night` s rest. When it`s out of water, it will automatically stop working for lower power consumption.
- ORDER WITH CONFIDENCE: We want our customer service to be just as excellent as our products and this is why we do our best to cater to your every need! And if something goes wrong, please don't worry! We provide one-year warranty for our diffusers! So, let us know, we` re here for you!
Smart Diffuser,Smart Essential Oil Diffuser,Smart Oil Diffuser,Smart Aroma Diffuser
Shenzhen Dituo Electronic Co.,Ltd. , https://www.sz-dituo.com