A method for ecological restoration of urban lakes
A technology for ecological restoration and lakes, which is applied in chemical instruments and methods, polluted waterways/lakes/ponds/rivers treatment, biological water/sewage treatment, etc. It can solve the problems of urban lakes, strong wind and waves, and water level that cannot be lowered, etc. problems, to achieve the effect of rich implementation experience, simple operation, and quick results
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Embodiment 1
[0027] A method of ecological restoration of urban lakes, including fish community structure regulation, wind and wave reduction, water quality conditioning, submerged plant planting, healthy food net construction, and long-term maintenance operation.
[0028] Specifically, the fish community structure is regulated by the wire mesh to catch fish, the wire mesh adopts 3 finger, 4 finger, 5 finger interval layout, the average spacing of the wire net is 6m, the length of the distribution is 35m; the wind and wave reduction, according to the implementation site water depth and terrain conditions, lay a width of 2.5±0.5m fence, the total length of 300m;
[0029] Water quality conditioning mainly uses 5ppm of calcium hypochlorite (content >60%), and then uses 10ppm of polyaluminum chloride (content of 30%) for flocculation precipitation, and the transparency of the water body is raised to more than 100cm;
[0030] The cultivation of submerged plants, according to the substrate and water...
Embodiment 2
[0034] A method of ecological restoration of urban lakes, including fish community structure regulation, wind and wave reduction, water quality conditioning, submerged plant planting, healthy food net construction, and long-term maintenance operation.
[0035] Specifically, the fish community structure is regulated by the silk net to catch fish, the wire net adopts 3 finger, 4 finger, 5 finger, 6 finger interval layout, the average interval of the wire net is 5 m, the length of the deployment is 40 m; the wind and wave reduction, according to the implementation of the site water depth and terrain conditions, lay a width of 2.0± 0.3 m fence, the total length of 500 m;
[0036] Water quality conditioning, according to the characteristics of water quality, first in the water body through the way of suspension, suspension density of 2kg / m 3 Pleated crown mussels, stocked in shallow waters 500 g / m 3 The patina ring Aya snail, hanging mussel time is 5 days, 5 days later, into the water...
Embodiment 3
[0040] Step 1: Fish community structure regulation: fish community regulation is different from the traditional wire mesh fishing, electric fishing, medicine, the use of fish catching methods, mainly using fish to avoid the silk net, afraid of the principle of disturbance, in the area of dense silk net, wire mesh is divided into 5 finger interval layout, the average interval of the wire net is 8m, the length of the distribution is 50m, through the mechanical boat to make a sound, disturb the fish activity, the fish out of the wire mesh area, repeatedly lift the wire mesh, confirm whether to clean up, each area about 3 times clean, clean up, after cleaning, Seal off areas where fish have been driven with nets and continue fishing activities in the next area;
[0041] Step 2: Wind and wave reduction: wind and wave reduction, mainly using ecological permeable enclosure to achieve, according to the characteristics of the urban lake governance area, in the main wind direction of the la...
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