750 Gallon Septic Tank

A 750 gallon septic tank is a small sewage treatment system for some buildings that are not connected to a public sewage system, including one or more pools and a septic system. In this article, we'll introduce to  you the septic tank specification, why the septic system is a cafeteria for bacteria, and how to arrange a septic tank.

Septic Tank Specification

Why the septic system is a cafeteria for bacteria

Bacteria are what make a septic system work. They break down waste, leaving the water clean enough to percolate down into the earth safely. The whole system is designed to keep bacteria healthy and busy. 

1. All waste flows to the septic tank.

2. Watery waste, called “effluent,” fills most of the 750 gallon septic tank. Anaerobic bacteria begin breaking down the organic material in the effluent.

3. A layer of sludge falls to the bottom. Sludge is composed of inorganic solids and the byproducts of bacterial digestion.

4. A layer of scum floats to the top. Scum is primarily composed of fats, greases, and oils. The 750 gallon septic tank acts like a settling pond. Greases and oils float to the top. Heavier solids sink to the bottom.

5. A filter prevents most solids from entering the outlet pipe.

6. Effluent flows to the drain field.

The septic drain field provides a large area where bacteria can thrive and treated water can seep into the ground.

7. Holes in the drain septic field pipe allow effluent to seep into surrounding gravel. Gravel around pipes allows water to flow into soil and oxygen to reach bacteria.

8. Aerobic bacteria in gravel and soil complete the decomposition of the waste.

9. Clean water seeps down into the groundwater and aquifer.

How to arrange a 750 gallon septic tank?

There are roughly two ways to arrange 750 gallon septic tanks: one is decentralized arrangement, that is, one or two buildings are equipped with a 750 gallon septic tank; the other is centralized arrangement, that is, one area, one group or an independent construction unit for the range of services. The more dispersed the 750 gallon septic tank layout, the smaller the capacity of each pool; on the contrary, the more concentrated the layout, the larger the pool capacity. Li Jinhe and others conducted a comparative analysis of 750 gallon septic tanks of 7 specifications through comparison of economic indicators in four aspects: cost, land use, environmental pollution, and operation management, and found that with the increase of the volume of 750 gallon septic tanks, almost all indicators for 750 gallon septic tank below 20m³, the use of reinforced concrete tanks is better than brick tanks in terms of cost, performance and service life; the more dispersed the 750 gallon septic tank, the greater the chance of leakage; from the perspective of management, centralized Septic tanks are obviously easier to manage than decentralized 750 gallon septic tank, and operations such as sludge removal have less impact on the environment of the community than decentralized ones. Therefore, when conditions permit, the concentrated layout of 750 gallon septic tank in the community should be given priority, but it cannot be one size fits all, and it should be determined according to the situation.

The location of the septic tank should be set in a hidden place that is easy to clean and where people do not often stay and move. Leakage of the 750 gallon septic tank pollutes the surrounding building foundations and underground water intake structures. The wall of the 750 gallon septic tank should have a sufficient distance from the facilities to be protected. Generally, the net distance from the buildings is not less than 5 m, and the net distance from the underground water intake structures It is not less than 30 m. When the clearance requirement cannot be met, certain protective measures must be taken.

Conclusion

The environmentally friendly 750 gallon septic tank is made of glass fiber reinforced plastic, with special filler inside to realize the complete mixing of sewage and anaerobic sludge. It has the characteristics of labor saving, time saving, money saving, acid and alkali resistance, and its normal service life can reach 50 years. The integrated biological 750 gallon septic tank is a cylindrical device made of glass fiber reinforced plastic and reinforced material. It integrates the traditional regulating tank, sedimentation tank, fermentation tank and filter tank into one container, and has a dung storage bin and a filter bin inside. , the warehouse wall is covered with fibers and mesh materials that are easy to biofilm, forming a multi-stage biofilm treatment device. The sewage degradation route of this device is longer, and there are few impurities in the effluent. Due to the sufficient anaerobic, there is less residual feces, and the ammonia nitrogen is also degraded better, which improves the purification efficiency.

The setting of 750 gallon septic tank is a systematic project, which should be considered as a whole with the setting of urban sewage treatment plants. Comprehensive technical and economic comparisons are made based on factors such as sewage scale, pipe network layout, treatment costs, and environmental capacity. The administrative department organizes the planning, construction, and environmental protection departments to issue relevant policies to clarify the scope and design standards of 750 gallon septic tank, and provide management refer to. Even if the economy is developed and the degree of urban sewage treatment is improved, 750 gallon septic tank still have positive significance for their existence. Because it has the advantages of low cost, no operating cost, can reduce the pressure of sewage treatment plants, and is convenient for sludge collection, etc., it ensures the necessity of its existence, and will develop in a more environmentally friendly and simpler direction.