Landscape lake water replenishing and phosphorus control process

A technology for lakes and landscapes, applied in the field of water replenishment and phosphorus control in landscape lakes, can solve the problems of cumbersome steps, poor phosphorus removal effect, cumbersome steps in the phosphorus removal process, etc., and achieve the effect of simple process steps and convenient operation

Pending Publication Date: 2020-12-08

NANJING INST OF GEOGRAPHY & LIMNOLOGY

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Problems solved by technology

If the naturally occurring VFA content is insufficient, it is necessary to add VFA in the anaerobic section, and the steps are relatively cumbersome

[0004] The steps of the above-mentioned phosphorus removal process are relati...

Abstract

The invention discloses a landscape lake water replenishing and phosphorus control process, and belongs to the technical field of sewage purification. The process is simple in steps and convenient tooperate, the oxygen content in water does not need to be controlled, calcium ions of calcium carbonate and phosphate ions in water can generate hydroxyl calcium phosphate, the hydroxyl calcium phosphate precipitates downwards, and calcium ions released by calcium carbonate on the lower layer are not influenced; no filtering device needs to be placed in the phosphorus removal process, the replacement cost of the filtering device is reduced, meanwhile, the cleaning time of the filtering device is also saved, and in addition, only similar water needs to be purified. The purification process can be suitable for various sewage purification projects with different scales, can also ensure the ecological safety in the purification process, is scientific and reasonable, is safe and convenient to use, is low in calcium carbonate price, is very easy to purchase, and is convenient to popularize and apply.

Application Domain

Water contaminantsWater/sewage treatment +2

Technology Topic

Environmental chemistryCalcium carbonate +9

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Examples

Experimental program(8)

Example Embodiment

[0036] Example 1:

[0037] (1) take the pond water was charged three of the same capacity are large tank, pond HRT for 12h, hydraulic loading of 0.08m 3 / m 2 · D, coverage submerged plant pond bottom 40%, respectively, marked A1, B1, C1, the first detection case A1, B1, C1 three phosphorus content of water in the cup, the detection data in Table 1.

[0038] (2) was poured into 30mm diameter A1 tank calcium carbonate was poured into a 30mm diameter to tank B1, calcium carbonate was poured into 30mm diameter C1 tank, the tank cover three calcium carbonate a thickness of 80mm, three tank while stirring.

[0039] (3) three tanks left 6h, the second detecting phosphorus content in water, detection data shown in Table 1.

[0040] Table 1

[0041] A1 (mg / L) B1 (mg / L) C1 (mg / L) First detection 0.5 0.5 0.5 Second detection 0.1 0.11 0.125 Removal rate 80％ 78％ 75％

Example Embodiment

[0042] Example 2:

[0043] (1) take the pond water was charged three of the same capacity are large tank, pond HRT for 12h, hydraulic loading of 0.08m 3 / m 2 · D, coverage submerged plant pond bottom 40%, respectively, marked with A2, B2, C2, phosphorus content at this time A2, B2, C2 of the first three cup of water detection, the detection data shown in Table 2.

[0044] (2) was poured into 30mm diameter tank A2 calcium carbonate was poured into a 30mm diameter B2 of the tank, the calcium carbonate was poured into 30mm diameter C2 tank, the tank cover three calcium carbonate a thickness of 90mm, three tank while stirring.

[0045] (3) three tanks left 6h, the second detecting phosphorus content in water, detection data shown in Table 2.

[0046] Table 2

[0047] A2 (mg / L) B2 (mg / L) C2 (mg / L) First detection 0.5 0.5 0.5 Second detection 0.085 0.1 0.11 Removal rate 83％ 80％ 78％

Example Embodiment

[0048] Example 3:

[0049] (1) take the pond water was charged three of the same capacity are large tank, pond HRT for 12h, hydraulic loading of 0.08m3 / m 2 · D. The coverage of the water plants in the bottom of the pond is 40%, and the phosphorus content of water in the three cups of water in the three cups of the three cups, respectively, and the detection data is shown in Table 3.

[0050] (2) Pour the calcium carbonate of 30 mm particle diameter into the A3 water tank, pour a calcium carbonate of 30 mm particle diameter into the B3 water tank, pour a calcium carbonate of 30 mm particle diameter to the C3 water tank, covering the calcium carbonate in three tanks The thickness is 100 mm while stirring three water tanks.

[0051] (3) After the three water tanks are allowed to stand for 6 h, the amount of phosphorus in the water is detected, and the detection data is shown in Table 3.

[0052] table 3

[0053] A3 (mg / L) B3 (mg / L) C3 (mg / L) First detection 0.5 0.5 0.5 Second detection 0.075 0.085 0.1 Removal rate 85％ 83％ 80％

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Landscape lake water replenishing and phosphorus control process

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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