Mud and water mixture
Traditional septic tanks have been in use for over a century, utilizing a technology route where wastewater and sludge come into contact. The deposited sludge undergoes digestion and degradation, producing biogas, carbon dioxide, and other digestive gases. The buoyant action of the digestive gases disturb the sludge, and this disturbance allows the sludge to come into contact with
The mixture of microbial communities is more thorough, aiding in digestion and degradation. However, bottom sludge rises with the digestate gas, and after the bubbles escape, the sludge settles back down, re-polluting the wastewater with each rise and settle.
Under the technical mode of contact and mixing of septic tank waste water and sludge, the sedimentation and effluent water quality of the septic tank are affected. To improve the sedimentation effect and effluent water quality, the waste water retention time needs to be extended, typically ranging from 12 to 24 hours.
Three-phase separation
The Three-Phase Separation Septic Tank Technology is an advancement on traditional septic tanks, retaining the benefits of the sludge-water mixture within the tank and incorporating a technology for separating "wastewater, sludge, and digester gas" into three phases. A three-phase separation device is installed at the outlet of the septic tank, ensuring that sludge and digester gas are separated from the wastewater treatment process.
Avoid the interference of gas floatation phenomena on wastewater treatment. The sedimentation tank at the outlet end conforms to the technical standards of horizontal sedimentation ponds, with a wastewater sedimentation time of within 2 hours.
Technical Comparison
The septic tank's capacity is composed of the wastewater volume and sludge volume. In a three-phase separation septic tank, the wastewater retention time is 4-6 hours, compared to 12-24 hours in a sludge-water mixed septic tank. By reducing the wastewater retention time, the effective volume saved can store more wastewater.
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The function of a septic tank
Septic tanks are basic sludge treatment facilities and also pre-treatment facilities for domestic wastewater, their functions include:
1. Ensure the environmental hygiene of residential communities, preventing the spread of domestic wastewater and pollutants in living environments.
2.灭杀化粪池厌氧消化环境中的蚊蝇虫卵.
3. Temporary storage of sludge, anaerobic digestion of organic sludge, matured organic sludge can be used as agricultural fertilizer.
4. Pretreatment of domestic wastewater (primary treatment), sedimentation of impurities, and hydrolysis of large organic molecules into smaller ones such as acids and alcohols, to improve the subsequent wastewater treatment process.
