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Full-quantitative treatment process for landfill leachate

A technology for quantitative treatment of landfill leachate, which is applied in the fields of filtration treatment, contaminated groundwater/leachate treatment, water/sewage treatment, etc., and can solve problems such as unsuitable large-volume landfill leachate treatment, difficulty in system cleaning, and difficulty in long-term operation, etc. problems, achieve the effect of small resistance, ensure long-term operation, and reduce cleaning difficulty

Inactive Publication Date: 2020-11-27
山东达源环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the physical and chemical method has high treatment costs, and it is easy to cause scaling of equipment, difficult to clean the system, and difficult to run for a long time, so it is not suitable for the treatment of large amounts of landfill leachate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The full quantitative treatment process of landfill leachate includes the following steps:

[0038] (1) Pretreatment: adjust the pH value of the landfill leachate to 6.5, the temperature is 25°C, and filter to remove suspended solids and large particle pollutants therein to obtain the pretreated landfill leachate;

[0039] (2) Biochemical treatment: add the pretreated landfill leachate into the nitrification-anammox integrated bioreactor for biochemical treatment to remove COD and nitrogen-containing pollutants, and obtain the landfill leachate after biochemical treatment. The filtrate, wherein, the pH value of the nitrosation-anammox integrated bioreactor is 7.0, the dissolved oxygen content is 0.4mg / L, and the reaction time is 24h, and the nitrosation-anammox integrated bioreactor There is also a soft fiber filler with a volume fraction of 50%;

[0040] (3) Reverse osmosis treatment: the biochemically treated landfill leachate is subjected to reverse osmosis treatmen...

Embodiment 2

[0045] The full quantitative treatment process of landfill leachate includes the following steps:

[0046] (1) Pretreatment: adjust the pH value of the landfill leachate to 7.5, the temperature is 35°C, and filter to remove suspended solids and large particle pollutants therein to obtain the pretreated landfill leachate;

[0047] (2) Biochemical treatment: add the pretreated landfill leachate into the nitrification-anammox integrated bioreactor for biochemical treatment to remove COD and nitrogen-containing pollutants, and obtain the landfill leachate after biochemical treatment. The filtrate, wherein, the pH value of the nitrosation-anammox integrated bioreactor is 9.0, the dissolved oxygen content is 0.6mg / L, and the reaction time is 30h, and the nitrosation-anammox integrated bioreactor There is also a semi-soft filler with a volume fraction of 60%;

[0048] (3) Reverse osmosis treatment: the biochemically treated landfill leachate is subjected to reverse osmosis treatment...

Embodiment 3

[0053] The full quantitative treatment process of landfill leachate includes the following steps:

[0054] (1) Pretreatment: adjust the pH value of the landfill leachate to 7.0, the temperature is 30°C, and filter to remove suspended solids and large particle pollutants therein to obtain the pretreated landfill leachate;

[0055] (2) Biochemical treatment: add the pretreated landfill leachate into the nitrification-anammox integrated bioreactor for biochemical treatment to remove COD and nitrogen-containing pollutants, and obtain the landfill leachate after biochemical treatment. The filtrate, wherein, the pH value of the nitrosation-anammox integrated bioreactor is 8.0, the dissolved oxygen content is 0.5mg / L, and the reaction time is 28h, and the nitrosation-anammox integrated bioreactor There is also a combined filler with a volume fraction of 55%;

[0056] (3) Reverse osmosis treatment: the biochemically treated landfill leachate is subjected to reverse osmosis treatment ...

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Abstract

The invention discloses a full-quantitative treatment process for landfill leachate, which specifically comprises the following steps of: (1) adjusting the physicochemical properties of landfill leachate, and filtering the landfill leachate; (2) adding the pretreated landfill leachate into a nitrosation-anaerobic ammonia oxidation integrated bioreactor for biochemical treatment; (3) performing reverse osmosis treatment on the landfill leachate subjected to biochemical treatment through a reverse osmosis membrane to obtain a concentrated solution and a first clear solution; (4) adding a softening agent into the concentrated solution for softening treatment to obtain a softened concentrated solution; (5) evaporating the softened concentrated solution to obtain a second clear solution; and (6) mixing the first clear solution and the second clear solution, and discharging the mixed clear solution after the mixed clear solution reaches the standard. The landfill leachate is sequentially subjected to pretreatment, biochemical treatment, reverse osmosis treatment, softening treatment, evaporation treatment and subsequent treatment, so that most pollutants in the landfill leachate are separated out, the purpose of purifying water is achieved, the water is pure, and the energy consumption is ultralow.

Description

technical field [0001] The invention relates to the technical field of environmental protection engineering, in particular to a landfill leachate treatment process, and more specifically to a landfill leachate full quantification treatment process. Background technique [0002] Landfill leachate refers to the moisture contained in the garbage itself in the landfill, the rain and snow water and other moisture entering the landfill, deducting the saturated water holding capacity of the garbage and the covering soil, and passing through the garbage layer and the covering soil. A high concentration of organic waste water, with water seeping from accumulated waste destined for incineration. The properties of landfill leachate change with the operation time of the landfill, which is mainly determined by the stabilization process of the waste in the landfill. It is usually divided into five stages, namely, the initialization adjustment stage, the transition stage , acidification s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/06
CPCC02F9/00C02F3/30C02F5/00C02F1/001C02F1/04C02F1/441C02F1/66C02F2103/06
Inventor 严希海原泽
Owner 山东达源环保工程有限公司
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