按照国家卫生部、国家标准化管理委员会关于农村户厕卫生规范《GB19379-2012农村户厕卫生规范》标准，研发一种适合我国农村使用的塑料三格化粪池系列产品，该产品是以高密度聚乙烯为原料，一次注塑成型。使用该产品后，粪便发酵后的肥料能达到灭虫杀菌、无害化的标准。该系列产品无论在设计水平或产品质量上都达到甚至超过国家对这类产品技术要求。公司以优良的品质，优惠的价格，至高的信誉和优良的服务，在广大客户中建立了良好的公司形象，本厂生产的塑料三格化粪池销售网络遍布全国各地，是新农村建设积极推广的环保产品。 

According to the National Ministry of Health, the National Standardization Management Committee on rural household toilet hygiene standards "GB19379-2012 rural household toilet hygiene standards" standard, research and development of a suitable for rural use of plastic three-cell septic tank series products, the product is based on high-density polyethylene as raw materials, one injection molding. After using the product, the fertilizer after fecal fermentation can reach the standard of insecticidal sterilization and harmless. This series of products meet or even exceed the national technical requirements for such products in terms of design level or product quality. The company with excellent quality, preferential prices, the highest reputation and excellent service, in the majority of customers to establish a good corporate image, the factory production of plastic septic tank sales network all over the country, is the new rural construction actively promote environmental protection products.

1、设计理念先进，隔舱板上下错层设计，污水环流式流动，污水处理能力比同等容积的传统化粪池至少提高二倍以上。
    2、优化结构设计，工艺技术成熟，产品强度高，耐酸碱，防腐蚀；

3、节约用水，每次冲厕用水量仅为0.3升左。
    4、无异味，无苍蛆，不渗漏，不污染地下水。

5、产品的密封性和牢固性好，确保厌氧化粪的功能。

6、对粪便进行无害化处理，避免粪便传播各种疾病，可防止对空气、土壤、水的污染，保护环境。
    7、轻便，便于运输，安装方便快捷。

8、省工，省时，使用寿命可达50年以上。

二、注塑成型塑料三格化粪池主要由三大部分组成：
    1、沉淀腐化区：对生活污水进行沉淀，比重大的物质沉入池底进行化粪处理，比重小的部分浮于水面上层，可从清理口捞出，同时废水产生化粪作用，使一部分结构复杂的难分解的有机物被降解为易分解的物质。
    2、隔板区：将直流水转成环流水，增加污水在池体内的滞留时间，使污水在池内与沉淀污泥的接触时间更长，产生更多的微生物，对污水进行分解吞食。
    3、过滤器处理区：采用国内外先进的生物膜法处理技术，在此区域内经过一定时间培育，大量微生物在过滤器表面繁殖形成生物膜，污水与过滤器表面的生物膜接触，有机物被微生物截留，吸附和分解，实现对污水的有效净化处理。

三、三格化粪池的深度要求

1、决定池的深度需从多方面考虑：由于第一池内厌氧发酵形成粪皮和粪渣的厚度不断增加，相应地使池的有效容积逐渐缩小，池的深度过浅，易引起进粪时对粪皮和粪渣的扰动。从安全角度考虑，粪池的深度不宜超过1.6米，粪液面深度不应大于1.3m。为满足无害化卫生处理效果，对第一、第二池的容积有一定要求，池的深度过浅，占地面积就大，造成土地利用上的困难。综合以上考虑认为第一、二池的粪液面深度应保特为不低于1.0m，池内净高为不低于1.2m，相差0.2m留作粪皮的浮升空间。）

2、化粪池的顶面标高：为了不使地面雨水淹没化粪池而导致雨水从盖扳漏入池内，整个化粪池顶面标高应高出室外地面标高50-100mm。

3、化粪池出口标高：为保持粪池内粪液流动的静压，化粪池出水口管底标高应低于进口管底标高50-100mm，但又要高于所接污水管道顶面标高或浅土渗滤管管顶标高。三格化粪池基础应与相邻原建筑物基础间保持一定净距，其数值一般取不小于相邻基础底面的高差。

四、三格化粪池放样和挖坑

1、在所选定的化粪池位置和确定粪池的大小后，量好尺寸撒上石灰线。放线时应留出砖砌，一般每条放出150mm。然后按线挖坑，

2、开挖池坑时，对土质较好的地块，宜采用直接开挖，使砖块紧贴坑壁砌筑；对土质差或有地下水的地块，只好采用按一定坡度的放坡开挖，并留不小于150mm的回填宽度。回填时，可在回填土内掺入30%的碎石或碎砖瓦，要对称均匀，边砌筑边回填夯实，这样可对池墙起到桶箍作用。对地下水位高的地段，在开挖池坑前，先得在池位附近挖掘一口2米深的集水井，用泵抽吸井内积水。只有这样在不断排泄地下水条件下才可进行池坑开挖和完成建池任务。

1, the design concept is advanced, the partition plate up and down staggered design, sewage circulation flow, sewage treatment capacity than the same volume of the traditional septic tank at least two times more.

2, optimized structure design, mature process technology, high product strength, acid and alkali resistance, anti-corrosion;

3, save water, each flushing water consumption is only 0.3 liters left.

4, no odor, no maggots, no leakage, no pollution of groundwater.

5, the sealing and fastness of the product is good, to ensure the function of anaerobic manure.

6, harmless treatment of feces, to avoid the spread of various diseases, can prevent air, soil, water pollution, protect the environment.

7, light, easy to transport, easy to install fast.

8, save labor, save time, the service life can reach more than 50 years.

Two, injection molding plastic three-cell septic tank is mainly composed of three parts:

1, precipitation and decay area: the domestic sewage is precipitated, the material is sunk to the bottom of the pool for chemical treatment, the proportion of the small part floating on the surface of the water, can be pulled out from the cleaning mouth, while the waste water produces chemical effect, so that part of the complex structure of difficult to decompose organic matter is degraded into easily decomposed substances.

2, partition area: the direct water into circulation water, increase the retention time of sewage in the tank, so that the sewage in the tank and precipitated sludge contact time is longer, produce more microorganisms, decomposition of sewage swallowed.

3, filter treatment area: the use of advanced biofilm treatment technology at home and abroad, after a certain period of cultivation in this area, a large number of microorganisms breed on the filter surface to form a biofilm, sewage and filter surface biofilm contact, organic matter is intercepted by microorganisms, adsorption and decomposition, to achieve effective purification of sewage treatment.

Third, the depth requirements of the three-cell septic tank

1. The depth of the tank needs to be considered from many aspects: due to the increasing thickness of fecal skin and fecal residue formed by anaerobic fermentation in the first tank, the effective volume of the tank is gradually reduced, and the depth of the tank is too shallow, which is easy to cause the disturbance of fecal skin and fecal residue when entering the manure. From the perspective of safety, the depth of the manure tank should not exceed 1.6 meters, and the depth of the feces liquid level should not be greater than 1.3 meters. In order to meet the effect of harmless sanitation treatment, there are certain requirements for the volume of the first and second pools, and the depth of the pools is too shallow, and the area is large, resulting in difficulties in land use. Based on the above considerations, it is considered that the depth of the feces liquid surface in the first and second tanks should be kept at least 1.0m, and the net height in the tanks should be no less than 1.2m, and the difference of 0.2m should be reserved for the floating space of the feces.)

2. The top surface elevation of the septic tank: In order not to flood the septic tank with ground rainwater and cause rainwater to leak into the tank from the cover, the top surface elevation of the entire septic tank should be 50-100mm higher than the outdoor ground elevation.

3. Septic tank outlet elevation: In order to maintain the static pressure of the flow of feces in the septic tank, the bottom elevation of the septic tank outlet pipe should be 50-100mm lower than the bottom elevation of the inlet pipe, but it should be higher than the top elevation of the sewage pipe or the top elevation of the shallow soil percolation pipe. A certain clear distance should be maintained between the foundation of the three-cell septic tank and the foundation of the adjacent original building, and its value is generally not less than the height difference of the bottom surface of the adjacent foundation.

Four, three cell septic tank lofting and digging pit

1. After determining the size of the septic tank and the location of the selected septic tank, measure the size and sprinkle the lime line. Bricks should be set aside when setting off, generally 150mm per strip. Then dig the hole by the line,

2. When excavating the pit, direct excavation should be used for the plots with good soil quality, so that the bricks are laid close to the pit wall; For the land with poor soil quality or groundwater, it is necessary to use slope excavation according to a certain slope, and leave a backfill width of not less than 150mm. When backfilling, 30% gravel or broken brick can be incorporated into the backfilling soil, which should be symmetrical and uniform, and backfilling and ramming while laying can play a bucket hoop role on the pool wall. For the section with high groundwater level, before digging the pool pit, it is necessary to dig a 2 meter deep collecting well near the pool site and pump the water in the well. Only in this way can the pit be excavated and the pool construction be completed under the condition of continuous groundwater discharge.