Water quality purifying system, waste water treatment device, and natural non-point purifying device

Abstract

The invention relates to a water quality purifying system, a waste water treatment device, and a natural non-point purifying device which are low in energy consumption, can handle the point pollution source represented by polluted water or waste water and the multiple pollutants in river water or lake and marsh water, and can carry out the selective deep treatment to a non-point pollution source in rainfall. The mixed artificial wet land water quality purifying system includes a first aerobic artificial wet land, a non-aerobic artificial wet land, and a second aerobic artificial wet land. The first aerobic artificial wet land guides the purification object water along the vertical direction and at the same time removes the pollutants. The non-aerobic artificial wet land guides the purification object water along the horizontal direction and at the same time further removes the pollutants. The second aerobic artificial wet land guides the handled water from the non-aerobic artificial wet land along the vertical direction, and gives air to inside to improve the dissolved oxygen amount of the handled water.

Description

technical field [0001] The invention relates to a mixed artificial wetland water purification system, a sewage treatment device utilizing the purification system, and a natural non-point purification device capable of simultaneously purifying river or lake swamp water. The representative point pollution source, or in the treatment of various pollutants contained in river water or lake swamp water, can selectively or simultaneously carry out advanced treatment of non-point pollution sources flowing out during rainfall system, a sewage treatment device using the purification system, and a natural non-point purification device that can purify river or lake swamp water at the same time. Background technique [0002] Generally speaking, water pollution sources can be roughly divided into point pollution sources and non-point pollution sources for the purpose of prevention and management. [0003] Among them, the above-mentioned point pollution sources refer to pollution sources ...

AI Technical Summary

Problems solved by technology

[0014] However, as far as these prior technologies are concerned, compared with the purification capabilities of non-point pollution sources, the initial investment costs are relatively high, or maintenance and management are difficult

[0015] In addition, as far as the latter is concerned, due to the low purification efficiency, it may cause public dissatisfaction, so it is difficult to apply

[0016] Moreover, the treatment process is limited to physical treatment methods such as sedimentation and filtration, and the performance of removing non-point pollutants including nutrient salts such as nitrogen and phosphorus may be low

[0017] In addition, relying on filtration and the absorption capacity of plants to remove suspended solids, organic matter, and nutrient salts contained in polluted water, there will be limitations in sustainable performance depending on the region and season.

[0018] Furthermore, as a simple filtration system using an in-water filter layer made of gravel, crushed stone, etc., the filter layer management may be ineffective, or the nutrient salt removal performance may be insignificant

[0019] In addition, in the past, the management and reduction of pollutants were mainly based on water purification policies aimed at the treatment of point pollution sources. However, recently, with the improvement of living standards and urbanization, the characteristics of rainfall drainage have changed due to the increase in the impermeability of the area. , A large amount of various pollutants are discharged into the water system, which becomes the cause of low water quality. In order to find policy-based solutions and improve the water quality of rivers and lakes caused by non-point pollution sources, it is necessary to actively deal with non-point pollution sources including rainfall runoff

[0020] In particular, after non-point pollutants flow into surface water or groundwater, it is difficult to directly purify the pollutants. The farther the non-point pollution source is from the pollution source, the more the treatment cost will increase. Therefore, the current actual situation is that it is urgent to develop a non-point A purification system with purification facilities and excellent purification capabilities installed at the place where the pollutants occur

[0021] In addition, it is actually impossible to operate and monitor according to the conditions determined by the flow rate and water quality, and the problem of purification facility management is increasing. It is necessary to introduce technologies related to operation systems that are easy to maintain and manage, and can achieve operational goals cheaply and efficiently.

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