An organic fertilizer maintenance method, maintenance tank and integrated maintenance equipment for realizing zero discharge of existing domestic waste leachate
A technology for domestic waste and leachate, applied in the field of environmental engineering, can solve problems such as the unsatisfactory effect of advanced treatment of leachate, and achieve the effects of avoiding secondary pollution, improving fertilizer efficiency and achieving zero discharge.
Active Publication Date: 2021-07-30
NANJING UNIV +1
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Problems solved by technology
[0007] Aiming at the unsatisfactory effect of advanced treatment of existing leachate, the present invention provides a method and equipment for maintaining granular organic fertilizers using landfill leachate, combining leachate treatment technology with granular organic fertilizer production technology, using pre- The treated leachate tail water maintains the granular organic fertilizer to achieve zero discharge of the leachate tail water
Method used
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Embodiment 1
[0085] In this embodiment, the above-mentioned integrated maintenance equipment is used to maintain the semi-finished granular organic fertilizer with the leachate as the maintenance water.
[0086] In the present embodiment, the outlet of the quicklime dewatering tank 2 is provided with a non-woven fabric filter screen to intercept fine dust (such as quicklime and slaked lime dust formed after absorbing water); Three times that of , the replacement frequency is once a day;
[0087] The leachate in this embodiment is the leachate tail water after pretreatment, and its specific treatment method and the device used are the same as CN1351969A-a kind of purification treatment method of landfill leachate water, specification part embodiment 1; The total amount of sprayed leachate W is 25000kg / d; the area of curing tank 1 is 500m 2 , the stacking height of the organic fertilizer is 2m, and the temperature of the leachate in the leachate sump is tested t 0 is 25°C.
[0088] like...
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Abstract
The invention discloses an organic fertilizer maintenance method, a maintenance tank and integrated maintenance equipment for realizing zero-discharge of stored domestic garbage leachate, and belongs to the technical field of waste water resource utilization. Use the maintenance tank to maintain the granular organic fertilizer, during which the leachate is continuously sprayed into the maintenance tank as maintenance water, and at the same time, hot air is forced into the maintenance tank, and the water in the leachate evaporates and disperses in the gas in the maintenance tank; The integrated maintenance equipment includes: a maintenance tank and a quicklime dewatering tank, the air outlet of the centrifugal fan is connected to the quicklime dehydration tank, and the quicklime dehydration tank is directly connected to the drainage and air distribution device of the curing tank Or communicate with the drainage and air distribution device of the curing tank through a heat exchanger. The invention can realize the zero discharge of leachate tail water, realize the removal of polluting elements in the leachate in the form of reuse, and improve the fertilizer efficiency of the granular bio-organic fertilizer.
Description
technical field [0001] The patent of the present invention relates to the field of environmental engineering, and specifically relates to an organic fertilizer maintenance method, a maintenance tank and integrated maintenance equipment for realizing zero discharge of leachate from domestic waste. Background technique [0002] There are a large number of stock garbage landfills in my country, occupying a large amount of land, and causing serious pollution problems. Using "urban mining" technology to realize the resource utilization of stock garbage mining and sorting is the best solution to fundamentally solve the problem. For example, the use of humus soil organic matter resources in stock garbage to produce granular bio-organic fertilizers; and the use of humus soil under the sieve obtained after mining and sorting stock landfills to treat leachate or domestic sewage technology has also been verified and promoted in engineering projects Application (such as: the Chinese inv...
Claims
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IPC IPC(8): C02F1/04C05F7/00C05F11/02C05G5/12B01D53/28C02F103/06
CPCB01D53/28C02F1/048C02F2103/06C05F7/00C05F11/02C05G5/12Y02A40/20
Inventor 吴军罗培康朱俊伟杨智力吕宜廉李丹阳李志远马海涛郭小境
Owner NANJING UNIV