A method for anti-seepage of phosphogypsum reservoir slope
A technology of phosphogypsum and gypsum storage, which is applied in the field of expansion project of phosphogypsum storage, which can solve the problems of high construction cost of phosphogypsum slope anti-seepage, inability to solve the problems of slope anti-seepage and eutrophication pollution, etc., so as to alleviate the financial pressure of enterprises and financial burden, reduced cost of anti-seepage, good effect of anti-seepage
Active Publication Date: 2020-08-14
WENGFU DAZHOU CHEM CO LTD +1
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Problems solved by technology
[0006] (2) Phosphogypsum leachate is acidic wastewater containing soluble phosphorus, fluoride, etc. Improper treatment will cause eutrophication of groundwater, surface water and lakes.
However, it cannot solve the problems of slope anti-seepage and implementation in stages.
[0014] 2. The anti-seepage direction of the above-mentioned prior art is to use other materials and products to achieve the anti-seepage purpose of the phosphogypsum storage yard, but the phosphogypsum itself is not used in any way, resulting in relatively high construction cost for phosphogypsum slope anti-seepage high
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[0047] The present invention will be further described below in conjunction with the embodiments, and the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other used embodiments obtained by persons of ordinary skill in the art without creative efforts all belong to the protection scope of the present invention.
[0048] The invention provides a method for anti-seepage of a phosphogypsum reservoir slope. The main improvement of the method is that the modified phosphogypsum is used to paste the slope, and then the HDPE film is covered after the slope is repaired. The specific method steps are as follows:
[0049] Step1, build the bottom platform 1 and the top platform 2
[0050] Build the slope bottom platform 1 at the bottom of the slope, and build the slope top platform 2 at the top of the slope (the last phase of implementation). The platform and the platform at the top of ...
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Abstract
The invention discloses a novel phosphogypsum dam side slope seepage prevention method. The novel phosphogypsum dam side slope seepage prevention method comprises the following steps that step 1, a slope bottom platform, a side slope and a slope top platform are treated; step 2, the slope bottom platform and the side slope are leveled; step 3, a blind ditch, a gypsum residual water permeability guiding system and a slope bottom platform seepage prevention system are arranged on the slope bottom platform; step 4, a three-dimensional drainage network is laid on the side slope; step 5, seepage prevention arrangement is carried out on the surface of the phosphogypsum layer slope sticking layer, wherein the seepage prevention is connected with a seepage prevention system at the bottom of an original reservoir area, and the top is anchored on the slope top platform; and step 6, multi-stage modified phosphogypsum slope sticking is carried out. The novel phosphogypsum dam side slope seepage prevention method can achieve the aim of phosphogypsum dam steep side slope seepage prevention, and greatly reduces the excavation amount of an original side slope under the condition of comprehensivelyutilizing phosphogypsum to stick the slope and changes waste into treasure. The greatest advantage of the novel phosphogypsum dam side slope seepage prevention method is that "seepage prevention construction can be completed at a time after foundation is cleared" is replaced by" construction in stages", so that the construction cost of a phosphogypsum storage yard is greatly reduced.
Description
technical field [0001] The invention relates to an anti-seepage method for a slope of a phosphogypsum storage, which is an anti-seepage treatment method suitable for a valley-type phosphogypsum storage yard, and is especially suitable for an expansion project of a phosphogypsum storage. Background technique [0002] Phosphogypsum is a solid waste discharged during the production of phosphate fertilizer and phosphoric acid. About 4.5-5t of phosphogypsum is produced for every 1t of phosphoric acid produced. Whether at home or abroad, the resource utilization of phosphogypsum is not satisfactory, and the effective utilization rate of phosphogypsum in the world is only about 4.5%. Currently, stockpiling is the main method for the treatment and disposal of phosphogypsum. [0003] Phosphogypsum storage yards mainly include flat storage yards and valley storage yards. Whether it is a flat storage yard or a valley storage yard, if it is stored and handled improperly, it will become...
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Login to View More IPC IPC(8): E02D31/00
CPCE02D31/004
Inventor 欧阳龙孙群富黄光柱奚金荣付勇宋星星冉瑞泉鄢永刚孙毅叶国成赵枫张俊张一军
Owner WENGFU DAZHOU CHEM CO LTD