Target loop type ecological restoration for natural water body drinking water sources and water quality improvement technique

Abstract

The invention discloses a target ring-typed technology for ecologically restoring natural drinking water source fields and improving water quality. The composition of a target ring-typed functional area is that the water intake of a water source field is the target center, the concentric circles are set as per the same or different radiuses, according to the functions of different material fencing-parting or larallel single bank arrangement, the structure area of the water source fields which are independent of and associated with each other is restored ecologically and operated. The invention integrates the technologies such as drain grating and wave elimination, alga control, basic environment improvement and micro ecological environment restoration and the like, by the improvement of the environmental conditions such as stormy waves, bottom characteristics, transparency and the like, the aquatic vegetation of lakes and aquatic ecosystem are restored, the self-cleanness ability and stability of aquatic ecosystem are improved, and the purpose of continuously improving the water quality of water source fields is finally realized.

Description

technical field [0001] The invention relates to a target-ring type natural drinking water source ecological restoration and water quality improvement technology. This technology can be adjusted and reorganized according to drinking water intake requirements, water source geography and biological environment conditions, and is also suitable for promotion in ecological restoration and water quality protection and purification of other types of natural water sources. Background of the invention [0002] In recent years, many large rivers and lake basins in my country have not paid much attention to the protection of the ecological environment of water areas and adopted timely and effective follow-up measures while economically developing. Long-term industrial and agricultural production and human pollution have led to rapid deterioration of the ecosystem structure of each basin. Environmental pollution and eutrophication are becoming more and more serious. Once some river basin...

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Problems solved by technology

[0003] ①Chemical method: the use of coagulation and sedimentation and chemical agents to kill algae. This method can efficiently and instantly control the reproduction of cyanobacteria, but the negative impact of chemical agents on water ecology and its serious consequences are difficult to predict

[0004] ②Biological method: At present, planting aquatic plants and breeding silver carp and bighead carp are used to control the reproduction of cyanobacteria. Although this method is environmentally safe and has a certain effect on inhibiting eutrophication, it has been found in domestic practice that , the survival rate of the aquatic plants planted is low, and at the same time, it is not easy to deal with the aging and dead aquatic plants, which will cause secondary pollution. Large quantities of silver carp and bighead carp are input, and excessive input may also cause new ecological problems in the lake. These are all worthy of discussion. In addition, some experiments have used beneficial microorganisms to carry out algae removal tests, but due to the lack of high content of effective live bacteria and no feeding Microorganisms provide good biological implantation, so the actual application cost is too high to promote, and the actual effect is not ideal

[0005] ③Physical method: At present, the most used method is to use modified clay to absorb the input, settle the cyanobacteria population in the early stage of growth and reproduction to the bottom of the lake, control its growth, and reduce the probability of cyanobacteria blooms, but its disadvantages are obvious. The removal rate of cyanobacteria is 5% - 8% with clay, which is only stronger than the 2% - 3% removal rate of artificial algae fishing; the appearance of its algae removal is only the muddy water with short-term cyanobacteria bloom changes, and the cyanobacteria cells in the bottom mud It can be kept in the layer for several months. Specifically, even 5%-8% of flocculated cyanobacteria are very likely to float up and reproduce in large numbers within two or three days as short as two or three days at most.

[0007] These methods can reduce the harm of cyanobacteria "bloom" to a certain extent, but have little effect on the reduction of total nitrogen and total phosphorus in the water body. The current damage to the ecological environment of the water area is mainly due to the irreversible damage to the micro-ecological environment of the water area. Destruction, the original water ecological environment is based on the balance of water producers (phytoplankton, aquatic plants), water consumers (zooplankton, aquatic animals) and water decomposers (microorganisms). After the ecosystem is destroyed, the organic and inorganic pollutants formed by exogenous and endogenous pollution in the water area cannot be decomposed by microorganisms in time and converted into nutrients that aquatic plants can use, and the ecological self-purification function of the water area will not be restored. , the ecological environment of the water area is deteriorating day by day

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