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Septic Tank Production Line The Cured Product Is Decomposed At The Bottom Of The Tank
- Jun 14, 2017 -

Septic Tank Production Line The cured product is decomposed at the bottom of the tank

The septic tank (huàfènchí) is a device for treating feces and filtering the precipitate. The principle is that the cured product in the bottom of the decomposition, the upper hydration of objects, into the pipeline flow, to prevent the pipeline blockage, to cure objects (feces and other garbage) have sufficient time to hydrolyze. Septic tank (septic tank) refers to the subsidence of living sewage, and the sludge for anaerobic digestion of small treatment structures.

The first septic tank originated in the 19th century Europe, has been 100 years of history.

The initial purpose of setting up septic tanks in urban life areas is to accumulate fertilizers. With the progress of urbanization and environmental pollution intensified, septic tanks to protect the water played a positive role. Nowadays, in many large cities in China, the role of septic tanks to provide fertilizer for agricultural production has basically disappeared. Septic tanks have become one of the basic measures of environmental protection.

The role of septic tanks

The septic tank is a basic sludge treatment facility and is also a pre-treatment facility for domestic sewage. Its role is:

1, to protect the living community of environmental health, to avoid living sewage and pollutants in the living environment of the spread.

2, in the septic tank anaerobic corrosion of the working environment, kill mosquito eggs.

3, the temporary storage of sludge, organic sludge for anaerobic corrosion, aging organic sludge can be used as agricultural fertilizer.

4, the pretreatment of domestic sewage (a treatment), precipitation of impurities, and macromolecular organic hydrolysis, as acid, alcohol and other small molecules of organic matter, to improve the follow-up of sewage treatment.

Process principle editor

Septic tank is a kind of sedimentation and anaerobic fermentation of the principle of removal of domestic sewage suspended solids treatment facilities, are primary transitional life treatment structure. The concentration of suspended solids in the living matter is 100 ~ 350mg / L, the concentration of CODCr is between 100 ~ 400mg / L, the concentration of suspended organic matter BOD5 is 50 ~ 200mg / L, L. Sewage into the septic tank after 12 ~ 24h precipitation, can remove 50% to 60% of the suspended matter. Sedimentation of the sludge after more than 3 months of anaerobic fermentation decomposition, so that the decomposition of organic matter in the sludge into a stable inorganic, corrupt raw sludge into a stable cooked sludge, changing the structure of the sludge, Reduce the moisture content of the sludge. Regularly carry out the transport of sewage, landfill or used as fertilizer. Requirement: The calculated volume of the precipitated part and the decay part of the septic tank shall be determined according to Section 4.8.4 ~ 4.8.7 of the Code for Design of Building Water Supply and Drainage (GB50015-2003). Sewage in the septic tank stay time should be used 12h ~ 36h. For sludge-free treatment systems, the septic tank volume should also include the volume of stored sludge.