Garbage percolate treatment process

Abstract

The scheme discloses a garbage percolate treatment process in the technical field of sewage treatment, wherein garbage percolate is settled and separated by a regulating tank, water quality homogenization and water quantity regulation are carried out at the same time, the garbage percolate regulated by the regulating tank is put into an anaerobic tank, macromolecular refractory organic matters inthe garbage percolate are decomposed into easily degradable organic matters through microbial anaerobic metabolism, the garbage percolate subjected to the anaerobic treatment is put into an aerobic tank, and through the action of high-activity aerobic microorganisms, the garbage percolate is oxidatively decomposed for metabolism, a reverse osmosis membrane is used for reverse osmosis treatment ofthe garbage percolate in a nanofiltration production water tank, the operating pressure of reverse osmosis is 1.5-10.5 MPa, and the interception component is (1-10)* 10<-10> m small molecule solute, and finally discharged treated water meets the discharge standard. By adopting this scheme to treat the garbage percolate, the effluent can reach (GB 16889-2008) Level I Emission Standard.

Description

technical field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a landfill leachate treatment process. Background technique

[0002] Municipal waste is a major problem in urban environmental governance. Landfill leachate from waste transfer stations, incineration plants or landfills is composed of various compounds and rotten substances, containing extremely high concentrations of BOD, COD, nitrogenous compounds, Phosphorus-containing compounds, organic halides, sulfides, and inorganic salts not only smell bad, but many of them are carcinogens. If it is discharged into the water body, it will pollute the environment, dissolve into the ground, and pollute the water source. It is a major hazard to the urban environment and human health. Its toxicity is far greater than that of conventional urban sewage. Therefore, landfill leachate must be treated up to the standard before it can be discharged.

[0003] Landfill leachate i...

Examples

Embodiment 1

[0023] A landfill leachate treatment process, comprising the following steps:

[0024] Step 1. The landfill leachate is settled and separated through the adjustment tank, and the water quality is homogenized and the water volume is adjusted at the same time;

[0025] Step 2. The landfill leachate regulated by the regulating tank is put into the anaerobic pool, and the macromolecular refractory organic matter in the landfill leachate is decomposed into easily degradable organic matter through anaerobic metabolism of microorganisms;

[0026] Step 3. Put the landfill leachate after anaerobic treatment into the aerobic pool, and oxidize and decompose it for metabolism through the action of highly active aerobic microorganisms;

[0027] Step 4. After aerobic treatment, use a microfiltration filter to pump the landfill leachate into the microfiltration filter, and then enter the microfiltration water production tank for filtration;

[0028] Step 5. After the filtration in the micro...

Embodiment 2

[0032] The specific method and detection of this embodiment are the same as in Example 1, only the operating parameters are changed as follows: the operating pressure of reverse osmosis is 7.5MPa, and the intercepted component is 7×10 -10 mSmall molecule solutes.

Embodiment 3

[0034] The specific method and detection of this embodiment are the same as in Example 1, only the operating parameters are changed as follows: the operating pressure of reverse osmosis is 3.5MPa, and the intercepted component is 4×10 -10 mSmall molecule solutes.

[0035] After being treated by this method, the still water is sent to the physical and chemical testing center for testing, and the testing results are compared with my country's landfill leachate discharge standard (GB16889-2008) to obtain the following data:

[0036] Pollutants 2008 Standard Emission Limits Example 1 Example 2 Example 3 Compared SS(mg / L) 30 not detected not detected not detected excellent BOD 5 (mg / L)

[0037] From the above data, it can be known that the purified water obtained by using this method to treat landfill leachate is better than my country's landfill leachate discharge standard (GB16889-2008).

technical field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a landfill leachate treatment process. Background technique

[0002] Municipal waste is a major problem in urban environmental governance. Landfill leachate from waste transfer stations, incineration plants or landfills is composed of various compounds and rotten substances, containing extremely high concentrations of BOD, COD, nitrogenous compounds, Phosphorus-containing compounds, organic halides, sulfides, and inorganic salts not only smell bad, but many of them are carcinogens. If it is discharged into the water body, it will pollute the environment, dissolve into the ground, and pollute the water source. It is a major hazard to the urban environment and human health. Its toxicity is far greater than that of conventional urban sewage. Therefore, landfill leachate must be treated up to the standard before it can be discharged.

[0003] Landfill leachate i...

Examples

Embodiment 1

[0023] A landfill leachate treatment process, comprising the following steps:

[0024] Step 1. The landfill leachate is settled and separated through the adjustment tank, and the water quality is homogenized and the water volume is adjusted at the same time;

[0025] Step 2. The landfill leachate regulated by the regulating tank is put into the anaerobic pool, and the macromolecular refractory organic matter in the landfill leachate is decomposed into easily degradable organic matter through anaerobic metabolism of microorganisms;

[0026] Step 3. Put the landfill leachate after anaerobic treatment into the aerobic pool, and oxidize and decompose it for metabolism through the action of highly active aerobic microorganisms;

[0027] Step 4. After aerobic treatment, use a microfiltration filter to pump the landfill leachate into the microfiltration filter, and then enter the microfiltration water production tank for filtration;

[0028] Step 5. After the filtration in the micro...

Embodiment 2

[0032] The specific method and detection of this embodiment are the same as in Example 1, only the operating parameters are changed as follows: the operating pressure of reverse osmosis is 7.5MPa, and the intercepted component is 7×10 -10 mSmall molecule solutes.

Embodiment 3

[0034] The specific method and detection of this embodiment are the same as in Example 1, only the operating parameters are changed as follows: the operating pressure of reverse osmosis is 3.5MPa, and the intercepted component is 4×10 -10 mSmall molecule solutes.

[0035] After being treated by this method, the still water is sent to the physical and chemical testing center for testing, and the testing results are compared with my country's landfill leachate discharge standard (GB16889-2008) to obtain the following data:

[0036] Pollutants 2008 Standard Emission Limits Example 1 Example 2 Example 3 Compared SS(mg / L) 30 not detected not detected not detected excellent BOD 5 (mg / L)

[0037] From the above data, it can be known that the purified water obtained by using this method to treat landfill leachate is better than my country's landfill leachate discharge standard (GB16889-2008).

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