Method for treating domestic sewage with reinforced capillary infiltration trench system
A domestic sewage and infiltration ditch technology, which is applied in chemical instruments and methods, permeation/dialysis water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of slow water flow, low daily treatment capacity, and limited Widespread use and other issues
Inactive Publication Date: 2010-04-28
NANJING UNIV
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Problems solved by technology
The hydraulic load is high, and the COD and BOD in domestic sewage 5 , TP, NH 3 - The removal efficiency of N and TN is high, and the effluent can reach the national comprehensive sewage discharge standard, but the water flow speed of the infiltration ditch is slow and the daily treatment capacity is small, which limits the wide application of this technology
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Embodiment 1
[0019] Example 1: Enhanced capillary infiltration ditch system with a daily processing capacity of 15 tons
[0020] Design treatment water volume: Q=15t / d.
[0021] The structure of the hydrolytic acidification tank is as follows figure 1 As shown, the length is 5 meters, the width is 3 meters, the effective depth is 1.5m, the super height is 0.2m, and the total depth is 1.7m. The water inlet pipe is embedded at a height of 35cm from the bottom of the pool wall, and is downward at an angle of 25° with the pool wall. The outlet water enters the water distribution pipe in the surface soil layer of the enhanced capillary infiltration ditch and the water distribution pipe in the artificial soil layer through the submersible electric pump.
[0022] The structure of the enhanced capillary infiltration ditch is as follows: figure 2 As shown, covers an area of 20m 2 , the pool structure adopts brick-concrete structure:
[0023] The total volume of the processing unit is 15m 3...
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The invention discloses a method for treating domestic sewage with a reinforced capillary infiltration trench system, which comprises the following steps of: pre-treating the domestic sewage in a hydrolytic acidification tank; and treating effluent after pre-treating in a reinforced capillary infiltration trench sequentially consisting of a soil layer, a sandy soil layer, an artificial soil layer and a water guide layer, collecting the effluent and discharging the effluent, wherein the soil layer and the artificial soil layer of the reinforced capillary infiltration trench are both inoculated with earthworm. The reinforced capillary infiltration trench system has strong impact resistance load capacity, the daily disposal capacity of the sewage is greatly improved, and the removal rate of CODcr, ammonia nitrogen and total phosphorus reaches over 90 percent. Under the condition of the current village and town sewage inflow water quality, the effluent can meet the requirements of the GB8978-1996 National Sewage Discharge Standard.
Description
technical field [0001] The invention belongs to the field of domestic sewage treatment in rural areas, and in particular relates to an enhanced capillary infiltration ditch system and a method for treating domestic sewage by using it. Background technique [0002] Rural areas across the country produce more than 8 billion tons of domestic sewage every year, seriously polluting the living environment in rural areas. Water bodies such as rivers and lakes in most rural areas are generally polluted, eutrophication is becoming more and more serious, and pollution incidents frequently break out. The safety of drinking water quality is seriously threatened, directly endangering the health of farmers, seriously affecting the environmental sanitation in rural areas, and easily leading to the occurrence and spread of some epidemic diseases. It is estimated that the annual economic loss caused by rural environmental problems has exceeded 100 billion yuan, and the rural environment and ...
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Login to View More IPC IPC(8): C02F9/14C02F1/44C02F3/32
Inventor 郑正郭飞宏方彩霞张继彪罗兴章汪龙眠郑宾国王曦曦王正芳罗艳
Owner NANJING UNIV