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Novel leachate treatment technology
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A leachate and new process technology, applied in the field of leachate treatment, can solve the problems of adding equipment, achieve the effects of reducing energy consumption, simple operation and maintenance, and avoiding secondary pollution
Inactive Publication Date: 2019-12-17
南昌首创环保能源有限公司
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[0003] The main process of the original treatment of landfill leachate in a domestic wasteincineration power plant is "UASB + MBR (external membrane biochemical reactor) + DTRO treatment process". The total treatment scale of this system is 300m 3 / d, the discharge implements the first-level standard in Table 4 of the "Comprehensive WastewaterDischarge Standard" (GB8978), but the original leachate treatment system has changed operating parameters and adjusted operating conditions, and the total nitrogen can only be reduced to 80mg / L, which cannot meet environmental protection According to the requirements of the department, in order to make the total nitrogen up to the standard, it is necessary to increase the equipment
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Embodiment 1
[0025] see figure 1 , the present invention provides the following technical solutions: a new leachate treatment process, comprising the following steps:
[0027] Step 2: Adjustment, connected in series with the pretreatment pool, used to adjust the water quality and water volume of the leachate, which is beneficial to the next process treatment, the adjustment pool is 3726m 3 , COD 20000-60000, ammonianitrogen 3000, total nitrogen 3000;
[0028] Step 3: Anaerobic biological treatment, connected in series with the regulating tank, using anaerobic upflow sludgebed UASB to degrade the organic pollutants contained in the leachate, the effective volume of UASB is 1400m 3 , set up two units in series, the water inflow is 10-12.5 cubic meters per hour, the temperature is 31-33°C, the pH is 8, and the COD of the effluent is 3000-5000;
[0029] Step 4: The M...
Embodiment 2
[0041] see figure 1 , the present invention provides the following technical solutions: a new leachate treatment process, comprising the following steps:
[0043] Step 2: Adjustment, connected in series with the pretreatment pool, used to adjust the water quality and water volume of the leachate, which is beneficial to the next process treatment, the adjustment pool is 3726m 3 , COD 20000-60000, ammonianitrogen 3000, total nitrogen 3000;
[0044] Step 3: Anaerobic biological treatment, connected in series with the regulating tank, using anaerobic upflow sludgebed UASB to degrade the organic pollutants contained in the leachate, the effective volume of UASB is 1400m 3 , set up two units in series, the water inflow is 10-12.5 cubic meters per hour, the temperature is 31-33°C, the pH is 8, and the COD of the effluent is 3000-5000;
[0045] Step 4: The M...
Embodiment 3
[0057] see figure 1 , the present invention provides the following technical solutions: a new leachate treatment process, comprising the following steps:
[0059] Step 2: Adjustment, connected in series with the pretreatment pool, used to adjust the water quality and water volume of the leachate, which is beneficial to the next process treatment, the adjustment pool is 3726m 3 , COD 20000-60000, ammonia nitrogen 3000, total nitrogen 3000;
[0060] Step 3: Anaerobic biological treatment, connected in series with the regulating tank, using anaerobic upflow sludgebed UASB to degrade the organic pollutants contained in the leachate, the effective volume of UASB is 1400m 3 , set up two units in series, the water inflow is 10-12.5 cubic meters per hour, the temperature is 31-33°C, the pH is 8, and the COD of the effluent is 3000-5000;
[0061] Step 4: The M...
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Abstract
The invention belongs to the technical field of leachate treatment, and particularly relates to a novel leachate treatment technology. The technology comprises the following steps: pretreatment for removing suspended solids, floaters, oils and organic matters in a leachate; adjustment; anaerobic biological treatment; treatment using an MBR treatment system; disk-tube reverse osmosis (DTRO); RO connected with the DTRO in series and adopting low-pressure reverse osmosis to further remove bacteria, suspended solids, organic pollutants, heavy metal ions and ammonianitrogen in the leachate; and recycling. The leachate treatment technology has the advantages of improvement of the quality of reverse osmosiseffluent by arranging the low-pressure reverse osmosis after high-pressure reverse osmosis, reduction of energy consumption, avoiding of secondary pollution, effective interception of various pollutants, and good quality of the effluent, and a device for enforcing the technology has the advantages of high adaptability, stability in operation, simplicity, compactness, small occupied area, easiness in automation, and simplicity in operation and maintenance, so the centralized pollutionof a refuse dump is reduced to the minimum extent, the contradiction between development and the environment is fundamentally solved, and the sustainable economic development is promoted.
Description
technical field [0001] The invention belongs to the technical field of leachate treatment, and in particular relates to a new process for leachate treatment. Background technique [0002] With the rapid development of the economy, the amount of urban domestic waste in my country has increased rapidly, but a large amount of landfill leachate will be produced during the indoor fermentation process before the domestic waste enters the incinerator. Biochemical degradation, and at the same time, a high-concentration organic or inorganic liquid is produced under the seepage of precipitation and groundwater. We call it landfill leachate, also called leachate. There are many factors that affect the production of leachate. It mainly includes the rainfall situation in the landfill area where the garbage is piled up, the nature and composition of the garbage, the anti-seepage treatment of the landfill, and the hydrogeological conditions of the site, etc. [0003] The main process of the...
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Application Information
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