A kind of eutrophication water restoration method
A technology for eutrophication and water body restoration, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. Rebound and other problems, to avoid the risk of secondary pollution, improve the redox potential, and easy to attach and fix.
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Embodiment 1
[0031] Drug composition:
[0032] A eutrophication water restoration agent, which is composed of the following components by mass: 10% water, 20% calcium peroxide, 20% biomass charcoal powder, 20% composite bacterial agent, 5% calcium hydroxide, 5% calcium oxide % and ordinary Portland cement 20% (the ordinary Portland cement is made up of tricalcium silicate: dicalcium silicate: tricalcium aluminate: tetracalcium aluminoferrite, and its mass ratio is 10:5:3: 2).
[0033] Wherein said biochar powder is prepared by the following method:
[0034] The reed straw is crushed by a pulverizer, passed through a 20-80 mesh sieve to obtain biochar powder, soaked in 2%-4% NaOH solution, the solid-to-liquid ratio is 1:10-1:20, and the soaking time is 10-24 hours after soaking Rinse with deionized water until neutral, dry naturally to constant weight to get powdery biochar powder.
[0035] Wherein said composite bacterial agent is prepared by the following method:
[0036] Collect 40 mL ...
Embodiment 2
[0043] Embodiment 2 (actual engineering test)
[0044] Baiyangdian eutrophication water body in-situ restoration test case:
[0045] Background: Due to the rapid development of industry and agriculture and the rapid increase of population in the Baiyangdian Lake Basin, the waters of Baiyangdian Lake are polluted and the eutrophication is serious.
[0046] Step 1 (investigate and determine the eutrophication water body): Select a square water area with a length and width of 50m at the shore of the Baiyangdian Lake water area to measure the water samples. The obtained data are shown in Table 1 below. It can be seen that the Total phosphorus, total nitrogen, oxidation-reduction potential (ORP) and dissolved oxygen of the overlying water body do not meet the standards of normal water body, so the water area surrounded by the square is eutrophic water body.
[0047] Table 1 Water quality data table of a point in Baiyangdian Lake:
[0048] Total Nitrogen (mg / L) Total...
Embodiment 3
[0062] Hydrostatic leaching test:
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