CN103241898A - Wastewater treating method and system - Google Patents
Wastewater treating method and system Download PDFInfo
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- CN103241898A CN103241898A CN201310162735XA CN201310162735A CN103241898A CN 103241898 A CN103241898 A CN 103241898A CN 201310162735X A CN201310162735X A CN 201310162735XA CN 201310162735 A CN201310162735 A CN 201310162735A CN 103241898 A CN103241898 A CN 103241898A
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Abstract
The invention relates to the wastewater treatment field, and specifically relates to a wastewater treating method and a wastewater treating system. The method comprises the following steps of: step 1, filtering to remove impurities out of water; step 2, removing nitrogen and phosphorus, as well as organic matter out of the filtered water by anaerobic-anoxic-aerobic (A-A-O) method; step 3, treating the water obtained in the step 2 by a membrane bioreactor (MBR) method, thus intercepting and degrading active sludge and macromolecular substances in the water; and step 4, performing online oxidizing disinfection on the water obtained in the step 3 by using chlorine dioxide. The wastewater treating method and the wastewater treating system provided by the embodiment of the invention are capable of treating the wastewater more effectively and obtaining better water quality.
Description
Technical field
The present invention relates to field of waste water treatment, in particular to a kind of method of wastewater treatment and treatment system.
Background technology
In industrial production, and in the daily life, all can produce a large amount of waste water.The kind of waste water has a variety of, for example contains the organic waste water of N, S and halogen; The waste water that contains acid, alkali, oxygenant, reductive agent; The waste water that contains oil, of animal or plant nature grease; The waste water that contains organophosphorus; The waste water that contains aldehydes matter.
For example, pit water is a kind of in the waste water.Pit water is in progress of coal mining, and underground water contacts with coal seam, rock stratum, adds the influence of mankind's activity, at the waste water that has taken place to produce behind series of physical, chemistry and the biochemical reaction.The water quality of pit water has significant coal industry feature: the content of the suspended substance that contains is higher than surface water far away, and sensory properties is poor; And the granularity of contained suspended substance is little, light specific gravity, settling velocity slow, coagulation effect is poor; Also contain used oil, emulsification wet goods organic pollutant in the pit water.The total ion content that contains in the pit water is more much higher than general surface water, and is sulfate ion greatly.Pit water often pH value is low especially, and is normal with a large amount of ferrous ions, increased the difficulty of handling.
In existing wastewater treatment process, especially in the processing to pit water, usually use membrane bioreactor (MBR) method or sequence intermittent activated sludge process (SBR) or biological contact oxidation process or BAF (BAF) separately, all can only carry out single processing to waste water, for example be filtration or microbial reaction or removal toxicity etc.But comprise plurality of impurities in the waste water, as solid macrobead thing, bacterium, toxic substance etc., single processing can only be handled one or more impurity wherein, can't obtain the better water quality of quality.
Summary of the invention
The object of the present invention is to provide a kind of method of wastewater treatment and treatment system, to solve the above problems.
A kind of method of wastewater treatment is provided in an embodiment of the present invention, has comprised:
Step 1: filter, remove foreign material in the water;
Step 2: the water body after using biochemical process to described filtration carries out denitrogenation dephosphorizing and handles and remove treatment of organic matters of organic;
Step 3: utilize membrane bioreactor MBR method that the water body of step 2 gained is handled, be used for active sludge and the macromolecular substance of water body are held back and degraded, filter;
Step 4: use dioxide peroxide that the water body of step 3 gained is carried out the on-line oxidation sterilization.
Also provide above-mentioned method of wastewater treatment employed treatment system in an embodiment of the present invention, it is characterized in that, having comprised:
Filter plant;
Anaerobic pond, anoxic pond, Aerobic Pond;
Membrane bioreactor MBR;
Inside is provided with the sterilization pool of chlorine dioxide generator automatic medicament feeding system.
The method of wastewater treatment of the above embodiment of the present invention and treatment system, can bring following beneficial effect:
Can after processing, obtain better water quality.Method of wastewater treatment provided by the invention and treatment system are carried out the processing that filtration treatment, denitrogenation dephosphorizing were handled and removed treatment of organic matters of organic, the active sludge in the water body and macromolecular substance are held back to waste water successively, and the on-line oxidation that uses dioxide peroxide to carry out is disinfected.Can carry out multiple processing to waste water like this, the plurality of impurities that comprises in the waste water is removed respectively, thereby can improve the water quality that obtains at last.In the present invention, method of wastewater treatment combines anaerobic-anoxic-aerobic A-A-O method, membrane bioreactor MBR method, by biochemical process waste water has been carried out that denitrogenation dephosphorizing is handled and remove treatment of organic matters of organic, simultaneously the processing of also by membrane bioreactor MBR method the active sludge in the water body and macromolecular substance being held back.As seen, the combination of anaerobic-anoxic-aerobic A-A-O method and membrane bioreactor MBR method all can be carried out more efficiently processing to waste water with respect to existing treatment process, obtains better water quality.
Description of drawings
Fig. 1 is sewage treatment technology process synoptic diagram in the embodiments of the invention one;
Fig. 2 is the employed treatment system structural representation of method of wastewater treatment of the present invention.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
In embodiments of the invention one, waste water treatment process as shown in Figure 1, comprising:
Step 101: filter, remove foreign material in the water;
Step 102: the water body after using anaerobic-anoxic-aerobic A-A-O method to described filtration carries out denitrogenation dephosphorizing and handles and remove treatment of organic matters of organic;
Step 103: utilize the water body of step 102 gained of membrane bioreactor MBR to handle, be used for active sludge and the macromolecular substance of water body are held back and degraded, filter;
Step 104: use dioxide peroxide that the water body of step 103 gained is carried out the on-line oxidation sterilization.
In embodiment one, waste water treatment process provided by the invention carries out the processing that filtration treatment, denitrogenation dephosphorizing were handled and removed treatment of organic matters of organic, the active sludge in the water body and macromolecular substance are held back to waste water successively, and the on-line oxidation that uses dioxide peroxide to carry out is disinfected.Can carry out multiple processing to waste water like this, the plurality of impurities that comprises in the waste water is removed respectively, thereby can improve the water quality that obtains at last.In the present invention, method of wastewater treatment combines anaerobic-anoxic-aerobic (A-A-O) method, membrane bioreactor (MBR) method, by biochemical process waste water has been carried out that denitrogenation dephosphorizing is handled and remove treatment of organic matters of organic, simultaneously the processing of also by membrane bioreactor MBR method the active sludge in the water body and macromolecular substance being held back.As seen, the combination of A-A-O method and membrane bioreactor MBR method all can be carried out more efficiently processing to waste water with respect to existing treatment process, obtains better water quality.
Above-mentioned treatment process can also be improved in the following areas:
Before described step 102, the size of the water yield is carried out dash adjustment.
In described step 103, described active sludge is stored and dewatered, refluxes.
After described step 104, further comprise: the water body that described step 104 obtains is stored, in order to recycle or advanced treatment.
After described step 104, further comprise: the water body that described step 104 obtains is recycled, with the conserve water resource.
After described step 104, further comprise: adopt between water body that water source heat pump technology obtains described step 104 and the external world and carry out thermal exchange, thereby turn waste into wealth.
Embodiment two
Present embodiment provides above-mentioned method of wastewater treatment employed treatment system, as shown in Figure 2, comprising:
Filter plant;
Anaerobic pond, anoxic pond, Aerobic Pond;
Membrane bioreactor MBR;
Inside is provided with the sterilization pool of chlorine dioxide generator automatic medicament feeding system.
In the said system, described filter plant is used for water body is carried out described filtration, does not have foreign material when guaranteeing that waste water enters the next stage operation to be stuck on the equipment.Preferably, described filter plant is adopted coarse rack and fine fack, makes water body flow through successively described coarse rack and described fine fack, finishes coarse filtration and smart filter respectively.
Anaerobic pond, anoxic pond, Aerobic Pond combine, and adopt A-A-O method synchronous denitrification dephosphorizing, accomplish denitrogenation, dephosphorization and organic degraded simultaneously:
Filtered sewage enters anaerobic pond, the active sludge that also has second pond to reflux that enters simultaneously, polyP bacteria in the water is released phosphorus under anaerobic environment, the change chemical oxygen demand (COD) (COD), the voltaile fatty acid (VFA) that transform easily degraded simultaneously are poly-beta-hydroxy-butanoic acid (PHB); The sewage of anaerobic pond enters anoxic pond, and nitric nitrogen is transmitted by Aerobic Pond through internal recycle, and partial organic substances utilizes nitrate to obtain degraded as electron acceptor(EA) under the effect of denitrifying bacteria, changes into nitrogen and discharges water body, thereby reduce the nitrogen content in the water; Sewage finally enters Aerobic Pond, and the autotrophic type nitrifier in this pond is through the absorption of the nitrated and phosphorus of row ammonia nitrogen, and the nitric nitrogen in the water is back to anoxic pond, and the phosphorus of excessive absorption is got rid of by excess sludge in the mud, thereby the synchronous denitrification dephosphorizing of realizing water body is handled.
(Membrane Bio-Reactor MBR), is the biochemical reaction system that integrates the biological degradation of high performance membrane isolation technique and bio-reactor to described film-bioreactor.It substitutes settling tank in the traditional activated sludge process with membrane module, realizes mud-water separation, thereby waste water is handled, and has solid-liquid separation rate height, effluent quality is good, processing efficiency is high, take up an area of characteristics such as the little and operational management in space is simple.It carries out a step for the organism that last operation is left over, COD etc. again and removes, degrades in technology;
Next, the product water of MBR is introduced sterilization pool, the process using dioxide peroxide ClO2 producer automatic medicament feeding system of this sterilization pool carries out the on-line oxidation sterilization to water body, water after the sterilization enters clean water basin, the main purposes of these clean water basin is water storage, can be discharged to by the emission standard of country in the Nature water body and go, also can recycle, obtain tap water or industrial high purity water etc. such as advanced treatment.
Above-mentioned treatment system can also be added equipment, to increase more technique effect:
Equalizing tank, it is used for before described step 102 water yield being carried out dash adjustment;
Blower equipment, it is used for described Aerobic Pond and described membrane bioreactor MBR reaction tank are ventilated;
Mud storage pool, it is used for the described active sludge of described step 103 is stored;
The sludge dewatering machine room, it is used for the described active sludge of described step 103 is dewatered;
Clean water basin, it is used for the water body that described step 104 obtains is stored;
Water source heat pump system, it be used for to adopt between water body that water source heat pump technology obtains described step 104 and the external world and carries out thermal exchange.For example, by importing a small amount of high-grade energy (as electric energy), realize that low-temperature heat energy is to the high temperature bit transition.Water body respectively as winter heat pump heating thermal source and the low-temperature receiver of summer air-conditioning, namely in summer the heat in the buildings " is got ", be discharged in the water body and go, because the water source temperature is low, so can take away heat efficiently, to reach the purpose of giving the indoor refrigeration of buildings summer; And then be by water source heat pump units winter, and " extraction " heat energy is delivered to heating in the buildings from the water source.Thereby make the present invention truly accomplish to turn waste into wealth energy-saving and emission-reduction.
By above as can be known, method of wastewater treatment of the present invention and treatment system can also reach following beneficial effect:
1. can be further processed water, make its recyclable utilization, turn waste into wealth, economize on resources.Method of wastewater treatment provided by the invention and treatment process system can be after the disinfecting of step 4, the water body that obtains is carried out further advanced treatment, recycle, thereby can make it satisfy the standard of industrial high purity water or the standard of tap water, increased the supply of water resources, realized turning waste into wealth.
2. hot field of air conditioning is introduced the processing to water, further realized turning waste into wealth.Method of wastewater treatment provided by the invention and treatment system can adopt water source heat pump technology to carry out thermal exchange between water body and the external world, can utilize the temperature characteristics low than air of water body when summer, and the water body that processing is obtained is used for the air conditioner refrigerating of residential quarter; Heat extraction in the water body after also can will handling when winter simultaneously comes out to have realized turning waste into wealth for resident's heating.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of wastewater treatment is characterized in that, comprising:
Step 1: filter, remove foreign material in the water;
Step 2: the water body after using anaerobic-anoxic-aerobic A-A-O method to described filtration carries out denitrogenation dephosphorizing and handles and remove treatment of organic matters of organic;
Step 3: utilize membrane bioreactor MBR method that the water body of step 2 gained is handled, be used for active sludge and the macromolecular substance of water body are held back and degraded, filter;
Step 4: use dioxide peroxide that the water body of step 3 gained is carried out the on-line oxidation sterilization.
2. method of wastewater treatment as claimed in claim 1 is characterized in that,
In described step 1, described filtration comprises coarse filtration and smart filter, and water body is carried out coarse filtration and smart filter successively.
3. method of wastewater treatment as claimed in claim 1 is characterized in that,
Before described step 2, the size of the water yield is carried out dash adjustment.
4. method of wastewater treatment as claimed in claim 1 is characterized in that,
In described step 3, described active sludge is stored and dewatered, refluxes.
5. method of wastewater treatment as claimed in claim 1 is characterized in that,
After described step 4, further comprise: the water body that described step 4 obtains is stored.
6. method of wastewater treatment as claimed in claim 1 is characterized in that,
After described step 4, further comprise: the water body that described step 4 obtains is recycled.
7. method of wastewater treatment as claimed in claim 1 is characterized in that,
After described step 4, further comprise: adopt between water body that water source heat pump technology obtains described step 4 and the external world and carry out thermal exchange.
8. one kind as the employed treatment system of each described method of wastewater treatment of claim 1-7, it is characterized in that, comprising:
Filter plant;
Anaerobic pond, anoxic pond, Aerobic Pond;
Membrane bioreactor MBR;
Inside is provided with the sterilization pool of chlorine dioxide generator automatic medicament feeding system.
9. treatment system as claimed in claim 8 is characterized in that,
Described filter plant comprises coarse rack and fine fack, in described step 1, and water body flow through successively described coarse rack and described fine fack.
10. treatment system as claimed in claim 8 is characterized in that, further comprises at least a in following:
Equalizing tank, it is used for before described step 2 the water yield being carried out dash adjustment;
Blower equipment, it is used for described Aerobic Pond and described membrane bioreactor MBR are ventilated;
Mud storage pool, it is used for the described active sludge of described step 3 is stored;
The sludge dewatering machine room, it is used for the described active sludge of described step 3 is dewatered;
Clean water basin, it is used for the water body that described step 4 obtains is stored;
Water source heat pump system, it be used for to adopt between water body that water source heat pump technology obtains described step 4 and the external world and carries out thermal exchange.
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| CN103979733A (en) * | 2014-05-16 | 2014-08-13 | 山西清泽环境科技有限公司 | Method for carrying out purifying treatment on coal mine underground wastewater |
| CN104326624A (en) * | 2014-10-21 | 2015-02-04 | 苏州富奇诺水治理设备有限公司 | Sewage treatment equipment |
| CN104478171A (en) * | 2014-12-15 | 2015-04-01 | 北京桑德环境工程有限公司 | Reusing treatment method and system for municipal wastewater |
| CN107434298A (en) * | 2017-08-23 | 2017-12-05 | 长沙中联重科环境产业有限公司 | Gallery type sewage disposal system and the method that sewage disposal is carried out using the system |
| CN107459211A (en) * | 2017-09-08 | 2017-12-12 | 安徽兴安电气设备股份有限公司 | A kind of Water warfare water supply installation based on A2O techniques |
| CN107721080A (en) * | 2017-11-17 | 2018-02-23 | 广州恩业电子科技有限公司 | MBR and A based on modified form2The small towns decentralized type sewage process integrated system of/O technologies |
| CN108264195A (en) * | 2018-01-25 | 2018-07-10 | 浙江嘉善市政园林有限公司 | A kind of municipal drainage system |
| CN110550827A (en) * | 2019-09-26 | 2019-12-10 | 湖南沃工环境科技有限公司 | Environment-friendly energy-saving domestic sewage treatment equipment |
| CN112607978A (en) * | 2020-12-30 | 2021-04-06 | 中冶焦耐(大连)工程技术有限公司 | Coking sewage treatment is with energy-conserving circulating device |
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| CN107721080A (en) * | 2017-11-17 | 2018-02-23 | 广州恩业电子科技有限公司 | MBR and A based on modified form2The small towns decentralized type sewage process integrated system of/O technologies |
| CN108264195A (en) * | 2018-01-25 | 2018-07-10 | 浙江嘉善市政园林有限公司 | A kind of municipal drainage system |
| CN110550827A (en) * | 2019-09-26 | 2019-12-10 | 湖南沃工环境科技有限公司 | Environment-friendly energy-saving domestic sewage treatment equipment |
| CN112607978A (en) * | 2020-12-30 | 2021-04-06 | 中冶焦耐(大连)工程技术有限公司 | Coking sewage treatment is with energy-conserving circulating device |
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Application publication date: 20130814 |