Small village domestic sewage treatment equipment [underground]

Domestic sewage in small villages Water treatment equipment [Buried type]

The domestic sewage flows into the grid tank by itself, intercepts large particle solids and floating objects with the grid, and the effluent flows into the regulating and balancing tank. Outlet of regulating tank pump Upgrade the A-level biochemical tank, namely the hydrolysis biochemical tank, which can pre sterilize the water quality and reduce the organic pollutants in the wastewater, improve the biodegradability of wastewater, and at the same time, * * * decompose the special macromolecular ingredients that are not easy to degrade in conventional treatment.

Hydrolysis biochemical tank receives activated sludge from secondary sedimentation tank. The effluent from the hydrolysis biochemical tank is sent to the secondary contact oxidation tank for biochemical treatment. Under the action of oxygen aeration and biofilm, the organics are degraded into carbon dioxide and water. After the effluent is separated from the sludge in the secondary sedimentation tank, it enters the disinfection intermediate tank. After the pre stage treatment, all indicators of wastewater exceed the first level standard for sewage discharge. The sludge separated from the secondary sedimentation tank is respectively discharged to the hydrolysis biochemical tank and the sludge treatment tank thickener for digestion and decomposition. The amount of residual sludge in the digestion and decomposition tank is very small, and it is regularly pumped by a septic truck and transported outside.

Small village domestic sewage treatment equipment [underground] Main design parameters

Regulating tank: the regulating time is 8 hours.

Primary sedimentation tank: the primary sedimentation tank is a flat sedimentation tank with a surface load of 1.5m3/m2.hr.

Level A biological tank: Level A biological tank is a push flow anaerobic biochemical tank, and the retention time of sewage in the tank is 3 hours, filler It is an elastic three-dimensional filler with a specific surface area of 200m2/m3.

Level O biological tank: the level O biological tank is a push biological contact oxidation tank, the retention time of sewage in the tank is 5-6 hours, the filler is elastic three-dimensional filler, and the specific surface area of the filler is 200m2/m3.

Secondary sedimentation tank: the secondary sedimentation tank is a swirling sedimentation tank with a surface load of 1.0m3/m2.hr and a sedimentation time of 2.1 hours.

Disinfection tank: the disinfection tank is a whirling reaction tank, and the total retention time of sewage in the tank is about 300 minutes, and the hospital sewage is more than 1 hour.

Sludge tank: The sludge in the sludge tank can be pumped from the inlet to the bottom of the sludge tank by a septic truck and then transported outside.

Small village domestic sewage treatment equipment [underground] Product features
1. It can treat the comprehensive wastewater of the living system and similar organic sewage. The equipment is buried below the surface, and the surface above the equipment can be used as greening or other For land use, there is no need for building houses, heating and insulation.
2. The two-stage biological contact oxidation process adopts the plug flow biological contact oxidation process, and its treatment effect is better than the fully mixed or two-stage series fully mixed biological contact oxidation tank. It is smaller than the activated sludge tank, has strong adaptability to water quality, good shock load resistance, stable effluent quality, and will not produce sludge bulking. New elastic three-dimensional filler is used in the tank, which has a large specific surface area and is easy for microorganisms to hang and remove the membrane. Under the same organic load conditions, the organic matter removal rate is high, which can improve the solubility of oxygen in the air in water.
3. Biological contact oxidation method is adopted for biochemical tank. The volume load of its filler is relatively low, and the microorganism is in its own oxidation stage, so the sludge production is small. It only takes more than three months (90 days) to discharge the sludge (pumped or dehydrated into mud cake and transported out).
4. The underground domestic sewage treatment equipment is provided with soil deodorization measures in addition to conventional high altitude exhaust.
5. The whole equipment processing system is equipped with a fully automatic electrical control system and an equipment fault alarm system, which is safe and reliable in operation. Usually, there is no need for special personnel to manage the equipment, but only the timely maintenance of the equipment.
6. Adopt Glass Steel and stainless steel structure, with excellent characteristics of corrosion resistance, aging relief, etc., with a service life of more than 50 years.

Maintenance and management of integrated underground sewage treatment equipment The maintenance and management of integrated buried sewage treatment equipment is the key to its normal operation. The following three steps should be taken for equipment maintenance. Integrated buried sewage treatment equipment

Small village domestic sewage treatment equipment [underground] To use the equipment well, you must first be familiar with the equipment. It is a good step to carefully read the factory instructions of the product. Generally, the instructions indicate the type, model, specification and working characteristics of the equipment; Key points of operation, precautions, safety regulations, oil filling position, type of grease to be filled, interval of each oil change, etc. The second step is to get familiar with the operating conditions of the equipment, including the startup time, operating conditions, fault phenomena and troubleshooting methods of the equipment. The third step is to get familiar with equipment maintenance, including equipment maintenance and maintenance time.

During the maintenance and management of equipment, if the instructions of the equipment indicate the causes of relevant faults, troubleshooting methods, repair time and precautions, the relevant maintenance personnel shall carry out the maintenance of the equipment according to the instructions. However, it should be noted that many equipment manufacturers rarely introduce the shortcomings of their products in their product manuals. However, each product has its shortcomings more or less. Through long-term operation and observation, operators can accumulate some experience, gradually understand the shortcomings of equipment, and find out corresponding solutions.

The rural sewage treatment system in Zhouping Village, Zhuxi Town is a comprehensive rural environmental improvement project of Cengong County aimed at the actual situation of domestic sewage discharge of residents in the village. After the project is completed, domestic sewage will be collected and connected to the underground pipe network, and the sewage discharged from farmers' homes will be purified into clean water through the sewage treatment system, which can be directly used for irrigation, The village has effectively improved the phenomenon of "sewage cross flow and dirty environment" in the past.