Wastewater treatment technology continues to develop, among which HDPE (high-density polyethylene) integrated three-compartment septic tank stands out for its excellent performance and efficient treatment effect. This article will introduce the structure and working principle of this new type of septic tank in detail.
1. Septic tank structure.
HDPE integrated three-compartment septic tank is mainly composed of fecal inlet pipe, compartment tank, communication pipe, outlet pipe and cover plate. The details are as follows: fecal inlet pipe: as the first pass for feces to enter the septic tank, its design must ensure that the feces can flow smoothly and prevent gas overflow, and generally have a slope requirement to ensure that the manure enters the septic tank smoothly.
Compartment Tank: This is the core part of the septic tank and is divided into three separate spaces, namely the first, second, and third pools. Each pool has specific features to enable the efficient operation of the entire system.
Connecting pipes: connect each compartment to enable the manure liquid to flow between different tanks, so as to effectively decompose and sediment.
Cover: seals and protects against accidental falls.
Second, the principle of septic tankHDPE integrated three-grid septic tank uses the principle of anaerobic fermentation, middle layer fecal and parasite eggs that are greater than the specific gravity of the general mixture and easy to precipitate the principle to treat the agricultural production system in domestic sewage.
Anaerobic fermentation: After fresh manure enters the first tank from the manure inlet, the organic matter in the manure begins to ferment and decompose due to the anoxic conditions in the closed environment. In this process, a large amount of biogas is generated, and at the same time, the manure also undergoes physical changes, forming a three-layer structure: the upper layer is paste-like manure, the middle layer is clear manure, and the lower layer is lumpy or granular manure.
Middle layer manure: The manure liquid that has undergone preliminary fermentation flows into the second tank through the connecting pipe. At this time, most of the manure skins and residues that have not been fully fermented are left in the first tank for further fermentation. The fecal liquid flowing into the second tank is further fermented and decomposed, the pathogen gradually dies, and the fecal liquid is further harmless.
Parasite egg precipitation: Since the specific gravity of parasite eggs is greater than that of fecal fluid, they naturally sink to the bottom in pools 1 and 2, accumulating with fecal residue. By the third pool, the manure has been highly purified, the sediment can be used as a high-quality fertilizer, and the water in this pond can be discharged or watered in the green vegetable garden.
3. AdvantagesCompared with traditional brick or concrete septic tanks, HDPE integrated three-compartment septic tanks have the following advantages:
Easy installation: Adopt integrated design, on-site assembly is fast, and there is no need for complex construction processes.
Strong corrosion resistance: HDPE material itself has good acid and alkali resistance and aging resistance, and can maintain stable performance for a long time.
Good sealing performance: effectively prevent sewage infiltration, good anaerobic environment, and improve the ecological environment.
Easy maintenance: the inner wall is smooth and not easy to hang dirt, the cleaning cycle is long, and the maintenance cost is low.
With its unique structure and scientific working principle, HDPE integrated three-compartment septic tank realizes the effective treatment and resource utilization of domestic sewage. It not only meets the requirements of environmental protection, but also shows high practicability and economy in practical applications, and is an ideal choice for rural toilet renovation and sewage treatment in breeding farms.