What is the "three format" septic tank? What is the role? First, under the sanitary latrines constitute normal circumstances, the toilet house consists of toilet, toilet facilities and safe disposal of the three. Toilet House: toilet house basic requirements (see "rural household toilet hygiene standards" GB 19379-2003) toilet: toilet is a toilet must use sanitary ware, is divided into two types of squatting pan and toilet. Flushing toilet should be adopted water-saving toilet, indoor household toilet must use the flush toilet. Harmless treatment facilities: harmless treatment facilities in many forms, such as the three formats septic tank, double-urn-type septic tanks, digesters and so on. Second, the sanitary household toilet basic requirements (1) toilet house high / m ≥2.40 (2) toilet housing area / m2 ≥1.20 (3) side window area / m2> 0.26 (4) toilet door / m2 1.80 (High 2.0 × width 0.9) (5) toilet roof cement board, machine brick, asbestos, etc. (6) deal with glazed tiles dado or other impermeable material (7) dado height / m ≥1.00 (8) ground handling Floor Garden floor above 100mm, material Fanghuadezhuan or cement (9), drainage facilities (10) sealed toilet collection requirements in line, made of ceramic or good quality plastic (11) in line with the feces harmless septic tank processing requirements, sealed, no leakage. Project as mandatory requirements, the rest are recommended. Three, three septic tank consists of: three format excreta disposal facilities, and flush toilets are generally matched by the intake soil pipe, cell pool, over soil pipe, consisting of cover and other components. Four, three septic tank: two root canal three - cell communication through manure pits seal components. According to the main function of the three pools in turn can be named trapped sedimentation and fermentation tank (first tank), fermentation tank (second tank) and storage pits (third pool) again five, three basic requirements for septic tank volume (Key) Three septic tank volume should be based on the number of users, flushing water, faeces composting fermentation time and Shen egg sterilization requirements to decide. Faeces composting fermentation time and the time of death by 30 days pathogen calculated, wherein in the first pool required for 20 days, the second pool to stay 10 days, and the third tank volume is at least the sum of two pools. The total volume of 2m3, strict "as in Jiangsu Province harmless health household toilet Technical Specifications" in Appendix A: 2m3 standard drawing construction), toilets before "by rural households in Jiangsu Province, the sanitary toilet technical specifications" of the first pool the second pool, 3 pools of volume ratio should be 2: 1: 3, 1 pool does not reduce the volume of regulations under the premise may be appropriate to expand the volume of the second pool, indoor toilet without manure third pool can be appropriate reduce its volume. When less than 0.5m3 when the second tank volume, according to 0.5m3 design and construction. Six, three septic tank depth requirements (key) Determines the depth of the pool from the need to consider the various factors: ① Since the first thickness manure anaerobic fermentation tanks skin and fecal residue formation increased accordingly so that the effective volume of the pool gradually narrow, deep pool is too shallow, easy to cause disturbance to the skin and feces when fecal residue into the manure. ② most of the province high water table, depth is too large backhoe construction difficulty is also large, so the depth of the pool should not be too large; ③ from the security point of view, depth of septic tanks should not be more than 1.6 meters, fecal fluid levels should not be greater than 1.3m. ④ In order to meet the sanitary treatment effect on the volume of the first, second pool has certain requirements, the pool is too shallow depth, an area on the large, causing difficulties on land use. Based on the above considerations that the first and second pool of fecal fluid level should be maintained specially not less than 1.0m, pool clear height of not less than 1.2m, 0.2m difference manure skin buoyant reserved space. ) Seven, septic tank top and export level (1), septic tank top elevation: rain flooded the ground in order not to cause water from septic tanks and leaking into the pool cover to pull the entire septic tank top elevation It should be higher than the outdoor ground level 50-100mm. (2), septic tank outlet elevation: to maintain the static pressure in the flow of liquid manure pits, septic tank outlet pipe bottom elevation should be lower than the inlet pipe bottom elevation of 50-100mm, but then again higher than the top of sewage pipes surface elevation or shallow soil percolation tube top elevation. Eight, three cell septic tank-shaped design to determine the depth of the pool after the pool-shaped three grid septic tank can be determined according to the terrain, as well as the pool building built around the pool use requirements of other conditions. Specific pool shaped design, provided that they meet the design principle, can eclectic, such as rectangular, oval and the like. Such as land permit to an aspect ratio of 2: 1 is ideal rectangular (extended feces deposition time the pool is conducive to sound processing). Nine, three septic tank structure and function of the role of the first cell: receiving daily fresh manure, anaerobic decomposition stratified: the upper middle manure liquid manure skin and the underlying fecal residue, retaining precipitation parasite eggs conditions: sealed tight, the pool is relatively static or slow the appropriate length of HRT ten, three septic tank structure and function of the role of the second pool: the continuation of the first pool of retention precipitation parasite eggs, depth anaerobic fermentation, the free ammonia concentration rises sterilization kill eggs conditions: sealed tight to prevent the first pool fecal droppings skin, fecal residue into the second pool, thirty septic tank structure and role of the third pool of liquid manure into the third pool have generally been maturity, which has been basically to kill germs and eggs and removed, can be used for fertilization purposes. The third function mainly from manure storage tank role. The third tank volume size, consisting essentially of the number of fertilizer and fertilizer each to decide. If the third pool of manure as fertilizer is not, and direct export shallow soil filtration purification treatment, the volume of the third pool can be appropriately reduced. And a third pool can continue to play the role of second twelve, structure and function of the three cell septic tank into the soil pipe requirements: manure pipe into the best shape of pipa diameter is large enough, the size of 150 mm into the lower end of the soil pipe sunk under the manure surface to a depth of about 1/2 of the liquid height of dung. To avoid a short circuit as distancing effect into the soil pipe and the communication pipe between: remained relatively calm liquid manure, reducing the force to prevent the break up water will float on the surface of manure droppings thrown prevent skin submerged in the bottom of the dung slag and eggs to prevent occur when manure into gas surge is blocked thirteen, three septic tank through the structure and function of soil pipes for the first pool, but also as fresh fecal, feces and fecal skin All slag trapped in tanks, fermentation, to avoid drifting into the second pool. To this end, the level of the communication pipe installation position, size and shape of the tube diameter between the two walls are particular, neither the communication pipe blockage, but stopped fecal residue, just let manure flowing smoothly. Shenzhen Oasis Rainbow Electric Co., Ltd. is a major research and development of septic tanks, grease traps, fire water, finished septic tanks, septic tank factory finished, fiberglass septic tanks, grease traps fiberglass, fiberglass fire-fighting manufacturers . Tel: 0755-26608380