Rural wastewater treatment method based on recycling of landscape wetland

Abstract

The invention discloses a rural wastewater treatment method based on recycling of a landscape wetland. The rural wastewater treatment method comprises the following steps: introducing to-be-treated wastewater into an oil separating and sand setting pond to remove oil stains and large particle substances; introducing the treated wastewater into a baffling anaerobic pool; carrying out anaerobic treatment on the wastewater in the baffling anaerobic pool; then discharging the wastewater from a frame trickling filter from top to bottom through a water distributor; then discharging the wastewater into an adjusting pond; discharging the wastewater from the upper part of the adjusting pond to enter a step with a water wheel; discharging the wastewater from the step to an oxidization pond from topto bottom; discharging the oxidized wastewater into a surface flow artificial wetland; and finally discharging the waste water which is processed by the surface flow artificial wetland. By combining landscape design and wastewater treatment facilities, the method not only treats the wastewater, but also constructs a landscape for people to view. Meanwhile, the organic matters in the wastewater areturned into wealth for crops and garden greening. In addition, the method is high in wastewater treatment efficiency, little in generated sludge and solves the problem of stink effectively.

Description

technical field [0001] The invention relates to the field of rural wastewater treatment, in particular to a rural wastewater treatment method based on landscape wetland resource utilization. Background technique [0002] With the improvement of rural living standards, the amount of wastewater generated in rural areas is increasing. Rural wastewater mainly comes from domestic wastewater generated from kitchens and washing and livestock wastewater. This type of wastewater contains heavy metals and rich organic matter, and is often directly discharged without treatment. Discharged into the surrounding rivers, resulting in eutrophication of rural river ponds and surrounding reservoirs. At the same time, heavy metals and other toxic substances in wastewater enter the human body through the food chain, seriously endangering human health. Although this type of wastewater is more harmful, the organic matter in wastewater is the best fertilizer for plant growth. If it is used rationa...

AI Technical Summary

Problems solved by technology

Although this type of wastewater is more harmful, the organic matter in wastewater is the best fertilizer for plant growth. If it is used rationally, it will turn waste into treasure. With the enhancement of people's awareness of environmental protection and health, rural wastewater treatment is inevitable. Yes, at present, rural wastewater is mainly treated by biological technology, including anaerobic fermentation, biochemical pond technology, artificial wetland and biofilm technology, etc., but these technologies have more or less problems. In order to meet the requirements of the construction of a beautiful new countryside , there is an urgent need to develop a rural wastewater treatment process with low cost, simple operation, income generation for farmers, and certain landscape value

[0003] Anaerobic fermentation technology is used in rural wastewater treatment. It has good treatment effect and wide tolerance. It can decompose macromolecular organic matter in wastewater and can treat most of rural wastewater. However, anaerobic fermentation is easy to produce sludge. Most of them will affect the effect of wastewater treatment. At the same time, it is troublesome to clean up the sludge. After cleaning, it takes a long time to cultivate the microorganisms of anaerobic fermentation.

At present, these organic matters are decomposed by microorganisms. Although they have been degraded to a certain extent, rural wastewater is rich in organic matter. If collected properly, it will be a good fertilizer for crops.

[0004] Oxidation pond technology is usually combined with anaerobic fermentation technology to treat rural wastewater. Oxidation pond technology can efficiently treat wastewater and improve effluent water quality under the condition of artificial electric aeration, but aeration will increase operating costs

[0005] At present, the constructed wetland technology is the most widely used technology for rural wastewater treatment. If the organic load of the wastewater flowing into the constructed wetland is too high, it will cause eutrophication of the water body, produce malodorous gas, and cause the plants in the wetland to grow wildly, and the cost of manual maintenance will increase.

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