Concentrated water treatment system of leachate in waste incineration plant

A waste incineration and treatment system technology, applied in the direction of polluted groundwater/leachate treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as consumption, reduce consumption, reduce economic costs, The effect of saving economic cost

Pending Publication Date: 2016-10-26
JIANGSU TIANYING ENVIRONMENTAL PROTECTION ENERGY COMPLETE EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

Semi-dry deacidification uses Ca(OH) with a concentration of about 15% 2 The slurry deacidifies and cools the flue gas at the same time, and a large amount of water is consumed in the process

Method used

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  • Concentrated water treatment system of leachate in waste incineration plant

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Embodiment Construction

[0016] like figure 1 As shown, the present invention includes an MBR system 1 , a nanofiltration system 2 , a circulating water cooling system 3 , a semi-dry deacidification system 12 , a fly ash solidification system 13 , a reverse osmosis system 4 and a concentrated water tank 5 .

[0017] The inlet port of the MBR system 1 is used to input the leachate of the waste incineration plant, and the outlet of the produced water of the MBR system 1 is connected to the nanofiltration system 2 through the first control valve 6 , and is also connected to the concentrated water tank 5 through the sixth regulating valve 11 .

[0018] The concentrated water outlet of the nanofiltration system 2 is connected to the inlet port of the MBR system 1 through the second control valve 7, the fresh water outlet of the nanofiltration system 2 is connected to the reverse osmosis system 4 through the third control valve 8, and the fresh water outlet of the reverse osmosis system 4 The circulating wa...

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Abstract

A concentrated water treatment system of leachate in waste incineration plants relates to the field of sewage treatment and includes an MBR system, a nano-filtering system, a circulating water cooling system, a reverse osmosis system and a concentrated water tank. A water producing outlet of the MBR system is connected to the nano-filtering system. A concentrated water outlet of the nano-filtering system is connected to an inlet end of the MBR system. A fresh water outlet on the nano-filtering system is connected to the reverse osmosis system. A fresh water outlet on the reverse osmosis system is connected to the circulating water cooling system. A concentrate water outlet of the reverse osmosis system is connected to the concentrated water tank. The concentrated water tank is connected to a semi-dry deacidification system and a fly ash immobilizing system. During treatment of the leachate, a part of produced water generated in the MBR system and all concentrated water generated in the reverse osmosis system are used for the deacidification system and the fly ash immobilizing system, wherein the concentrated water generated in the nano-filtering system flows back to the MBR system. The water treatment system greatly reduces the economic cost of concentrated water treatment and achieves zero-emission of the concentrated water.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a leachate concentrated water treatment system of a garbage incineration plant. Background technique [0002] After the garbage from the waste incineration power plant enters the plant, it first needs to be stored in the garbage pit to achieve the purpose of garbage storage and fermentation, leachate can be smoothly exported, and the purpose of increasing the calorific value of the garbage is to ensure that the garbage can still be received during equipment accidents or maintenance. certain adjustment. The leachate generated during the garbage storage process and the flushing water of the unloading platform must be treated in accordance with the requirements of the environmental impact assessment. At present, in order to meet the strict environmental impact assessment requirements, more leachate treatment adopts the combined treatment process of "pretreatment + biological treatme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/06
CPCC02F9/00C02F2103/06C02F1/442C02F1/441C02F3/00
Inventor 陈丽刘兰英
Owner JIANGSU TIANYING ENVIRONMENTAL PROTECTION ENERGY COMPLETE EQUIP CO LTD
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