Small buried domestic sewage in rural areas Water treatment equipment device
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 buried domestic sewage treatment equipment in rural areas characteristic
The integrated sewage treatment equipment can be buried below the surface, and the surface can be used for greening or plaza. Therefore, the equipment does not occupy the surface area, does not need to build a house, and does not need heating and insulation.
Integrated sewage treatment can be made of reinforced concrete structure or steel structure, or Glass Steel.
Small buried domestic sewage treatment equipment in rural areas The AO biological treatment process in the integrated sewage treatment equipment adopts the plug flow biological contact oxidation tank, which is superior to the fully mixed or two-stage and three-stage series fully mixed biological contact oxidation tank. Moreover, it is smaller than the activated sludge tank, has strong adaptability to water quality, good impact resistance, stable effluent quality, and will not produce sludge bulking. At the same time, a new elastic solid is used in the biological contact oxidation tank filler It has a large actual specific surface area, and it is convenient for microorganisms to hang and remove the membrane. Under the same organic load conditions, it has a higher removal rate of organic matter than other fillers, and can improve the solubility of oxygen in the air in water.
Since the biological contact oxidation tank is used in the AO biological treatment process, the volume load of the filler is relatively low, and the microorganism is in its own oxidation stage, so the sludge production is less. In addition, the moisture content of sludge produced by biological contact oxidation tank is far lower than that of sludge produced by activated sludge tank. Therefore, the amount of sludge generated by the integrated sewage treatment equipment is less.
Small buried domestic sewage treatment equipment in rural areas The integrated sewage treatment equipment is equipped with full-automatic electrical control system and equipment damage alarm system, and the equipment is reliable. Therefore, there is no need for special personnel to manage it at ordinary times, only monthly and quarterly maintenance is required.
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.
programme
Generally, the service life of integrated underground sewage treatment equipment is more than 20 years. However, because of any mechanical equipment And its components have a certain operating life. The equipment shall be operated in a good working condition to ensure its normal service life. On the premise of completing the water treatment task, the ineffective and inefficient operation of the equipment shall be minimized to ensure that most of the equipment can meet the load operation, which can also play a role in extending the actual life of the equipment.
Pay attention to the establishment and implementation of the payment mechanism of the special funds for sewage treatment. Check the assessment and evaluation contents and performance evaluation index documents of pollution reduction formulated by local relevant departments, and focus on whether the establishment of important assessment indicators such as sewage pipe network penetration rate, sewage collection rate and treatment rate is scientific; Check whether the allocation of payment funds by relevant departments during the operation period of the project is based on the performance evaluation results, and whether there is a problem of "guaranteed water volume" or high "lump sum" payment; Review whether the special funds for township domestic sewage treatment with awards have changed the use of funds; Whether the sewage treatment fee is fully collected and warehoused.
