Filtering liquor treating process for urban consumer waste landfill

A technology for municipal solid waste and landfill leachate, which is applied in water/sewage multi-stage treatment, degassed water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of poor removal of heavy metal pollutants and adsorption materials. The problems of high price and high cost of sewage treatment can achieve the effect of easier control of process parameters, obvious removal effect and low price.

Inactive Publication Date: 2007-10-31
孙道玮
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AI Technical Summary

Problems solved by technology

However, looking at these technologies and processes, there are still aspects that need to be further improved. Among the existing declared patented technologies and processes, the technical process is complex and the equipment investment is huge; or the efficiency is low in the process of leachate treatment, and the hydraulic retention time is long. ; or the required adsorption materials are expensive, and the cost of sewage treatment is high
More importantly, these treatment processes mainly focus on the removal of organic...

Method used

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  • Filtering liquor treating process for urban consumer waste landfill

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Embodiment 1

[0043]Inject 60L of aged landfill leachate, which has been continuously produced and stored since Dalian Municipal Solid Waste Landfill was in operation in 2002, into the reaction tank, and add coagulant according to the dosage of 105g / L (leachate), and stir After 90 minutes, let stand for 30 minutes, and analyze the water quality of the supernatant. The supernatant liquid enters the SBR reactor after the ammonia nitrogen is blown off by air, and the organic matter in the wastewater is degraded by aerobic microbial treatment, and the nitrogen is denitrified by nitrification and denitrification bacteria. The time allocation for each stage of each operation cycle is as follows: water intake for 1 hour, initial aeration for 6 hours, static stirring for 4 hours, re-aeration for 4 hours, sedimentation and drainage for 2 hours. The volume load in the reactor is controlled at 0.3-0.5kgCOD Cr / (m 3 · d), the dissolved oxygen in the water during the aeration stage is controlled at 2-...

Embodiment 2

[0045] Inject 60L of fresh landfill leachate from the urban domestic waste landfill in Dalian into the reaction tank, add coagulant according to the dosage of 135g / L (leachate), stir for 120min, let it stand for 30min, and analyze the water quality of the supernatant . The supernatant liquid enters the SBR reactor after the ammonia nitrogen is blown off by air, and the organic matter in the wastewater is degraded by aerobic microbial treatment, and the nitrogen is denitrified by nitrification and denitrification bacteria. The time allocation for each stage of each operation cycle is as follows: water intake for 1 hour, initial aeration for 8 hours, static stirring for 6 hours, re-aeration for 6 hours, and sedimentation and drainage for 2 hours. The volume load in the reactor is controlled at 0.3-0.5kg COD Cr / (m 3 · d), the dissolved oxygen in the water during the aeration stage is controlled at 2-4mg / L. Table 3 shows the analysis results of raw water and main pollutant ind...

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Abstract

The invention discloses a process technology of municipal life refuse imbedding site leakage liquid, which is characterized by the following: proceeding coagulated pretreatment, SBR anaerobic or aerobic treatment; reaching secondary standard in 'waste water comprehensive emission standard (GB8978-1996)'; providing a preparing technology of coagulant; possessing rich source and cheap price. This invention compensates for high operating cost and big device investment of now craft, which possesses spread value.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a process for treating leachate of municipal solid waste landfill. Background technique [0002] At present, sanitary landfill is still the main way to dispose of municipal solid waste in my country and even in the world. With the continuous and rapid development of my country's economy, the process of urbanization is accelerating, the scale of cities is expanding, the urban population is increasing, and the living standards of urban people are gradually improving. The output of urban domestic waste is increasing year by year, and the composition of waste is becoming more and more complex. The landfill leachate of municipal solid waste is the leachate waste water formed by rainwater and other reasons after the landfill of the garbage is stale and fermented. Due to the complex composition of the garbage, the leachate formed is a kind of high-concentra...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/52C02F1/20C02F3/30
Inventor 孙道玮安晓雯仉春华张照明
Owner 孙道玮
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