CN217103486U - Leachate biochemical treatment system - Google Patents
Leachate biochemical treatment system Download PDFInfo
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- CN217103486U CN217103486U CN202220588423.XU CN202220588423U CN217103486U CN 217103486 U CN217103486 U CN 217103486U CN 202220588423 U CN202220588423 U CN 202220588423U CN 217103486 U CN217103486 U CN 217103486U
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- flocculation
- bucket
- water body
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- 238000011282 treatment Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 238000005189 flocculation Methods 0.000 claims abstract description 47
- 230000016615 flocculation Effects 0.000 claims abstract description 47
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000010802 sludge Substances 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000010865 sewage Substances 0.000 claims description 47
- 238000000926 separation method Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005276 aerator Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003814 drug Substances 0.000 description 11
- 238000005086 pumping Methods 0.000 description 9
- 238000004062 sedimentation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 239000012629 purifying agent Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000003311 flocculating effect Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to a leachate biochemical treatment system, it includes flocculation barrel and the biochemical bucket that is used for the holding to carry out the material stirring through flocculation barrel preliminary treatment's filtration back water, and biochemical bucket is provided with the oxygen generator that can provide oxygen in the biochemical bucket and to stretching into the agitating unit who carries out the material stirring in the biochemical bucket, is provided with activated sludge in biochemical bucket's the bucket, and biochemical bucket still is provided with and is used for carrying the biochemical water after the biochemical treatment to flocculation barrel's backflow pipeline once more. The utility model has the advantages of simple structure, reasonable process, sanitation and environmental protection.
Description
Technical Field
The utility model relates to a leachate biochemical treatment system.
Background
At present, the domestic garbage is mainly treated by landfill and incineration in society, in the treatment process, the domestic garbage can pass through a garbage transfer station, a garbage treatment station or a garbage landfill, and percolate (also called leachate and penetrating fluid) is generated at each circulating node.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a filtration liquid biochemical treatment system of simple structure, reasonable in process and health environmental protection.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a filtration liquid biochemical treatment system, includes flocculation barrel and the biochemical bucket that is used for the holding through the filtration back water of flocculation barrel preliminary treatment, and biochemical bucket is provided with the oxygen generator that can provide oxygen for biochemical bucket in the bucket and to stretching into the agitating unit who carries out the material stirring in the biochemical bucket, is provided with activated sludge in biochemical bucket's the bucket, and biochemical bucket still is provided with and is used for carrying the biochemical water after the biochemical treatment to the backward flow pipeline of flocculation barrel flocculation treatment once more.
The utility model has the advantages of simple structure, reasonable process, sanitation and environmental protection.
Drawings
FIG. 1 is a schematic view of the overall process of the leachate treatment system of an embodiment;
FIG. 2 is an enlarged view of I in FIG. 1;
FIG. 3 is an enlarged view of II of FIG. 1;
FIG. 4 is an enlarged view of III of FIG. 1;
Detailed Description
The leachate treatment system shown in fig. 1 to 4 comprises a leachate pretreatment system and a leachate biochemical treatment system.
The leachate pretreatment system comprises a coarse filtration device 11, a primary filtration system, a coagulating sedimentation water-sewage separation device, a water-sludge separation device, a first sewage collection tank 13 and a second sewage collection tank 14.
The coarse filtering device 11 is used for separating coarse garbage and large impurities in the sewage extracted from the original sewage sedimentation tank 15 to obtain a mixed filtering water body.
The primary filtering system is used for separating the mixed filtering water body from the large impurities and oil and water to obtain the leachate water body.
The coagulating sedimentation water and sewage separation equipment comprises a flocculation barrel 21 and a plurality of medicament adding devices, wherein the flocculation barrel 21 is connected with a primary filtration system and used for accommodating the leachate water body, and the medicament adding devices are controlled by a system control device to add a neutralizer and a water purifying agent into the flocculation barrel 21 so as to neutralize and purify the leachate water body to obtain a sedimentation water body.
The leachate pretreatment system is provided with three groups of medicament adding devices, and each group of medicament adding device comprises a medicament barrel and a medicament pumping pipeline for pumping the liquid medicament in the medicament barrel to the flocculation barrel 21.
Specifically, the first group of agents adding device 22 uses natural minerals as main raw materials, and is a novel alkaline flocculating settling agent with stable structure and performance, which is obtained by performing physicochemical processing, activation modification, application of advanced technology, strengthening modification, full compound digestion with other inorganic alkali, and fractional crushing and sieving, and can be added into the flocculating barrel 21 to make sewage: 1. flocculating and settling; 2. the acid leachate is used as a strong alkaline medicament to flocculate and neutralize the acid leachate or heavy metal leachate, so that the acid leachate becomes neutral; 3. the coagulant can play a role in helping the coagulation of colloid particles in the percolate and can be used as a particle nucleus weighting agent to accelerate the separation of insoluble substances; 4. can effectively remove anions such as phosphate radical, sulfate radical, fluoride ion and the like; 5. can destroy the combination of complexing agents or chelating agents such as sulfamate and the like to some metal ions; 6. the emulsion percolate has destabilization and demulsification effects by adjusting the pH value.
The agent used by the second group of agent adding device 23 is a novel, high-quality and high-efficiency iron salt inorganic polymeric flocculant, 1, the coagulation performance is excellent, the alumen ustum is dense, and the sedimentation speed is high; 2. the water purifying effect is excellent, the water quality is good, harmful substances such as aluminum, chlorine, heavy metal ions and the like are not contained, the water phase transfer of iron ions is also avoided, and the water purifying agent is non-toxic, harmless, safe and reliable; 3. the effects of turbidity removal, decoloration, deoiling, dehydration, degerming, deodorization, algae removal, removal of COD, BOD and heavy metal ions in water and the like are remarkable; 4. the pH value range of the adaptive water body is 4-11, the optimal pH value range is 6-9, the pH value and the total alkalinity change range of the purified raw water are small, and the corrosivity to treatment equipment is small; 5. the purification treatment effect on micro-polluted, low-temperature and low-turbidity raw water containing algae is obvious, and the purification effect on high-turbidity raw water is particularly good; 6. the dosage is less, and the treatment cost can be saved by 20-50%.
The third group of medicament adding devices 24 uses the medicament as the water purifying agent, and the use characteristics thereof are as follows: 1) and flocculation property: can lead suspended matters to play a role in flocculation through the actions of electric neutralization and bridge adsorption. 2) And adhesion: can be used for adhesion through mechanical, physical and chemical actions. 3) Resistance reduction: the friction resistance of the fluid can be effectively reduced, and the resistance can be reduced by 50-80% by adding the water purifying agent into the percolate. 4. Thickening property): has thickening effect under neutral and acidic conditions, and is easy to hydrolyze when the pH value is above 10. When the structure is in a semi-net structure, the thickening is more obvious.
The mud-water separation device is used for carrying out sewage mud-water separation on the precipitated water body to obtain a filtered water body and solid sludge. The mud-water separation device comprises a first screw stacking machine 31 and a second screw stacking machine 32.
The first sewage collecting tank 13 is used for collecting the filtered water body, the inlet of the first spiral shell stacking machine 31 is connected to the side wall of the flocculation barrel 21 through a pipeline, and the outlet of the first spiral shell stacking machine is connected to the first sewage collecting tank 13 through a pipeline; the first sewage collecting tank 13 is connected with a first pipeline 41 having a sewage suction pump to pump the filtered water settled in the first sewage collecting tank 13 to the flocculation tank 21, a second pipeline 42 having a sewage suction pump to pump the filtered water settled at the bottom of the first sewage collecting tank 13 to the original sewage settling tank 15, and a third pipeline 43 having a sewage suction pump to pump the filtered water settled in the first sewage collecting tank 13 to a biological system.
The inlet of the second stack screw machine 32 is connected to the bottom of the flocculation barrel 21 through a pipeline, and the outlet is connected to the second sewage collecting tank 14 through a pipeline; the second sewage collecting tank 14 is connected with a fourth pipeline 44 having a sewage suction pump to pump the filtered water settled in the second sewage collecting tank 14 to the flocculation tank 21 and a fifth pipeline 45 having a sewage suction pump to pump the filtered water settled at the bottom of the second sewage collecting tank 14 to the original sewage settling tank 15.
The second wastewater collection tank 14 is the same as the first wastewater collection tank 13 for collecting the filtered water, but differs from the first wastewater collection tank 13 in that: the filtered water collected by the first wastewater collection tank 13 is located at a higher position in the flocculation vat 21 and has less sediments, and the filtered water collected by the second wastewater collection tank 14 is located at the bottom of the flocculation vat 21 and has more sediments.
The leachate pretreatment system further includes a biochemical water return line 46 having a water pump for delivering the biochemical water generated by the biochemical system back to the flocculation vat 21.
The leachate biochemical treatment system comprises the flocculation barrel 21 and a biochemical barrel 51 for accommodating filtered water subjected to primary treatment by the flocculation barrel 21, wherein the biochemical barrel 51 is provided with an oxygen generator 52 capable of providing oxygen for the biochemical barrel 51 and a stirring device 53 extending into the biochemical barrel 51 for stirring materials, activated sludge is arranged in the biochemical barrel 51, and the biochemical barrel 51 is also provided with a return pipeline (also called a biochemical water return pipeline 46) for conveying biochemical treated biochemical water to the flocculation barrel 21 for secondary flocculation treatment. One end of the return pipeline is provided with a decanter 54, the decanter 54 is arranged in the barrel of the biochemical barrel 51, and the other end of the return pipeline is connected to the flocculation barrel 21. The oxygen generator 52 is a Roots aerator, the air outlet end of the Roots aerator is connected with a rotational flow aerator 55, and the rotational flow aerator 55 is arranged at the bottom area of the biochemical barrel 51. The bottom of the biochemical barrel 51 is connected with a pipeline of a mud pump.
The biochemical system treats the percolate through activated sludge cultivated in the barrel. After being pretreated, the percolate enters a biochemical barrel 51 and is mixed with activated sludge in the barrel to form mixed liquid, and the mixed liquid is fully aerated in the tank, so that the activated sludge is in a suspended state on one hand, and the percolate is fully contacted with the activated sludge; on the other hand, oxygen is supplied to the activated sludge through the oxygen generator 52, and aerobic conditions are maintained to promote the normal growth of microorganisms. After a certain period of time, sludge-like flocs are formed due to the proliferation of aerobic microorganisms. After the organic substances in the leachate are adsorbed, absorbed and oxidatively decomposed by the activated sludge in the biochemical barrel 51, the mixed solution is subjected to precipitation treatment, solid-liquid separation is performed, and the purified leachate is discharged for secondary treatment.
The inlet of the first stack screw machine 31 is connected to the side wall of the flocculation barrel 21 through a pipeline, and the outlet is connected to a first sewage collection tank 13 through a pipeline; the first sewage collecting tank 13 is connected to a third pipeline 43 which is also provided with a sewage suction pump to pump the filtered water clarified in the first sewage collecting tank 13 to the biochemical barrel 51, and a sixth pipeline 47 which is capable of pumping the filtered water clarified in the first sewage collecting tank 13 to the membrane bioreactor 6 for water purification.
A method for treating leachate, including a leachate pretreatment method and a leachate biochemical treatment method, is described as follows.
The leachate pretreatment method comprises the following steps:
a. the sewage of the original sewage sedimentation tank 15 is pumped to the coarse filtering device 11 for coarse filtering, and coarse garbage and large impurities in the sewage are separated to obtain a mixed filtering water body.
b. And (3) carrying out large impurity and oil-water separation on the mixed filtering water body through a primary filtering system to obtain a leachate water body.
c. And (3) conveying the percolate water body to a flocculation barrel 21, carrying out acid-base neutralization treatment and blending treatment according to the water body condition, adding a neutralizer and a water purifying agent, stirring and mixing, and standing to obtain a precipitated water body.
d. Pumping the precipitated water body to a sludge-water separation device for sludge-water separation of sewage to obtain a filtered water body and solid sludge.
e. And (4) collecting the filtered water body to a first sewage collecting tank 13 for clarification, pumping the clarified filtered water body to a flocculation barrel 21, repeating the steps c and d for secondary treatment, and collecting solid sludge for pollution-free landfill.
f. And pumping the filtered water after the secondary treatment to a biochemical system for biochemical treatment.
g. And (3) collecting the part of the filtered water body sinking in the flocculation barrel 21 to a second sewage collection tank 14 for clarification, pumping the clarified filtered water body to the flocculation barrel 21 for repeated treatment in the steps c and d, collecting solid sludge for pollution-free landfill, pumping the filtered water body sinking at the bottom of the second sewage collection tank 14 to an original sewage sedimentation tank 15 for repeated steps a to d.
The biochemical treatment method of the percolate comprises the following steps:
a. the filtered water primarily treated by the flocculation tank 21 is pumped to the biochemical tank 51 to be mixed with activated sludge to form a mixed solution, oxygen generated by the oxygen generator 52 is conveyed to the biochemical tank 51 and fully aerated, and sludge-like flocculates are formed after a set time.
b. The sludge-like flocs are subjected to precipitation treatment and solid-liquid separation to obtain purified leachate, which is discharged and sent to the flocculation tank 21 again for treatment, and six processes such as a to f of the leachate pretreatment method are performed.
c. Repeating the step a and the step b.
d. The flocculation barrel 21 is provided with a plurality of reagent adding devices, the flocculation barrel 21 is connected with the biochemical barrel 51 and contains the biochemical water body, and the reagent adding devices are controlled by the system control device to add a neutralizing agent into the flocculation barrel 21 so as to neutralize the biochemical water body to obtain a precipitation water body; the precipitated water is subjected to sludge-water separation by a first screw stacking machine 31 to obtain filtered water and solid sludge.
e. The inlet of the first screw stacking machine 31 is connected to the side wall of the flocculation barrel 21 through a pipeline, and the outlet is connected to a first sewage collecting tank 13 through a pipeline; pumping the clarified filtered water body in the first sewage collecting tank 13 to a flocculation barrel 21 to repeat the steps a and b; after step b is completed, the filtered water clarified in the first wastewater collection tank 13 is pumped to a membrane bioreactor 6 for water purification.
Claims (6)
1. The utility model provides a filtration liquid biochemical treatment system, its characterized in that, including flocculation barrel and the biochemical bucket that is used for holding through the filtration back water of flocculation barrel preliminary treatment, biochemical bucket is provided with the oxygen generator that can provide oxygen for biochemical bucket in and carries out the agitating unit of material stirring to stretching into biochemical bucket, is provided with activated sludge in biochemical bucket's the bucket, and biochemical bucket still is provided with and is used for carrying the biochemical water after the biochemical treatment to flocculation barrel's the backward flow pipeline of flocculation treatment once more.
2. The biochemical treatment system for percolate according to claim 1, wherein a decanter is provided at one end of the return line, the decanter being placed in the barrel of the biochemical barrel and the other end of the return line being connected to the flocculation barrel.
3. The biochemical treatment system for percolate as claimed in claim 1, wherein the oxygen generator is a roots aerator, and the outlet end of the roots aerator is connected with a cyclone aerator which is arranged at the bottom area of the biochemical barrel.
4. The biochemical treatment system for percolate according to claim 1, wherein the bottom of the biochemical barrel is connected with a pipeline of a mud pump.
5. The biochemical treatment system for percolate according to any one of claims 1 to 4, wherein the flocculation tank is provided with a plurality of chemical adding devices, the flocculation tank is connected with the biochemical tank and accommodates the biochemical water body, and the chemical adding devices are controlled by the system control device to add a neutralizing agent into the flocculation tank to neutralize the biochemical water body to obtain a precipitation water body; the precipitated water body is subjected to sludge-water separation by a first screw stacking machine to obtain a filtered water body and solid sludge.
6. The biochemical percolate treatment system according to claim 5, wherein the inlet of the first stack screw machine is connected to the side wall of the flocculation tank by a pipeline and the outlet is connected to a first sewage collection tank by a pipeline; the first sewage collecting tank is connected with a first pipeline which is provided with a sewage water suction pump and can pump the filtered water body clarified in the first sewage collecting tank to the flocculation barrel, a third pipeline which is provided with a sewage water suction pump and can pump the filtered water body clarified in the first sewage collecting tank to a biochemical system, and a sixth pipeline which can pump the filtered water body clarified in the first sewage collecting tank to a membrane bioreactor for water body purification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220588423.XU CN217103486U (en) | 2022-03-16 | 2022-03-16 | Leachate biochemical treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220588423.XU CN217103486U (en) | 2022-03-16 | 2022-03-16 | Leachate biochemical treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN217103486U true CN217103486U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220588423.XU Active CN217103486U (en) | 2022-03-16 | 2022-03-16 | Leachate biochemical treatment system |
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| Country | Link |
|---|---|
| CN (1) | CN217103486U (en) |
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- 2022-03-16 CN CN202220588423.XU patent/CN217103486U/en active Active
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Address after: No. 10 Futian 6th Road, Gangkou Town, Zhongshan City, Guangdong Province, 528400, Floor 12, First Floor Patentee after: Guangdong Huineng Xinbang Ecological Environment Technology Co.,Ltd. Address before: 528400 card 42, floor 1, building 4, Wanhui Meiju, No. 11, Jiangwan Road, West District, Zhongshan City, Guangdong Province Patentee before: Zhongshan Huineng Xinbang Ecological Environment Technology Co.,Ltd. |