Ecological restoration method for black and odorous water
A technology for ecological restoration and black and odorous water bodies, applied in chemical instruments and methods, water aeration, water pollutants, etc., can solve the problems of unfavorable water ecosystem healthy development, failure to achieve root cause, poor governance effect, etc., to enrich the food chain , Improve the food chain and avoid secondary pollution
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Embodiment 1
[0063] Embodiment 1: the ecological restoration method of black and odorous water body, comprises the following steps:
[0064] Step 1, salvaging the floating objects in the water body;
[0065] Step 2, sewage interception: effectively intercept the sewage flowing into the water body to the urban sewage pipe network, and finally discharge it into the urban sewage plant, so as to reduce the pollution of sewage to the water body from the source. When a small amount of sewage is difficult to intercept in a short time, such as figure 1 As shown, the sewage is introduced into the pretreatment device for treatment and then discharged to the water body. The pretreatment device includes a funnel-shaped water storage tank 1. The water outlet of the water storage tank 1 is provided with a packing chamber 2 connected with it. The water storage tank 1 and the packing chamber A valve 3 is set between the 2, and the stuffing chamber 2 is filled with a pebble layer 4, a coarse sand layer 5, ...
Embodiment 2
[0072] Embodiment 2: the ecological restoration method of black and odorous water body, the difference with embodiment 1 is that the modification of the activated carbon in the modified activated carbon layer 7 comprises the following steps:
[0073] (1) Stir and impregnate activated carbon Ⅰ with 1mol / L hydrochloric acid solution for 3 hours. Activated carbon Ⅰ is commercially available 40-mesh wood activated carbon, filter with suction, wash with deionized water, and dry to obtain activated carbon Ⅱ. Activated carbon Ⅱ is oxidized with 1mol / L hydrogen Sodium solution was stirred and impregnated for 3 hours, filtered with suction, washed with deionized water, and dried to obtain activated carbon III, which was set aside;
[0074] (2) Add activated carbon III to 0.02mol / L potassium ferrate solution, then add 1mol / L hydrochloric acid solution to stir, filter with suction, wash with deionized water, and dry to obtain activated carbon IV;
[0075] (3) Add activated carbon IV into...
Embodiment 3
[0079] Embodiment 3: the ecological restoration method of black and odorous water body, the difference from embodiment 1 is that when the rainwater pipe and the sewage pipe in the municipal drainage and sewage pipe network are shared, as figure 2 As shown, a valve plate 10 is set at the drain end of the main drainage pipe 9, an overflow port 11 is provided between the top of the valve plate 10 and the inner wall of the main drainage pipe 9, and the bottom of the main drainage pipe 9 is connected with a sewage discharge pipe 12 connected to the sewage treatment station .
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