CN103121741A - Treatment method of filter backwash wastewater - Google Patents
Treatment method of filter backwash wastewater Download PDFInfo
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- CN103121741A CN103121741A CN2013100576261A CN201310057626A CN103121741A CN 103121741 A CN103121741 A CN 103121741A CN 2013100576261 A CN2013100576261 A CN 2013100576261A CN 201310057626 A CN201310057626 A CN 201310057626A CN 103121741 A CN103121741 A CN 103121741A
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Abstract
The invention provides a treatment method of filter backwash wastewater and is suitable for the field of wastewater treatment and application. The treatment method comprises the following steps of: collecting the wastewater to an adjusting tank, mixing turbid liquid in the adjusting tank with a flocculating agent in a pipeline, and then pumping the mixture into a sedimentation bank; and recycling flocculated supernatant liquid in the sedimentation tank by a submerged pump. According to the treatment method, the wastewater turbid liquid is mixed with the flocculating agent and precipitates, and water resources treated by the supernatant liquid and the precipitates are recycled; and the wastewater treatment method is simple in process and low in cost, reduces secondary pollution and saves water resources.
Description
Technical field
The invention belongs to the waste water treatment applications field, relate in particular to a kind for the treatment of process of filter back washing waste water.
Background technology
In the production process of the waterworks of adopting filtering technique, the filter back washing water accounts for 3%～10% of water factory's water inventory processed.In developed country and area, the factory effluent reuse technology of water-supply plant is used more extensive.But China starts late in this respect, has the water-supply plant less than 5% that backwashing water and spoil disposal water are collected the reuse facility.This part water is directly discharged, not only caused water resource waste, also can cause bad impact to environment because of the deposition of contained suspended solid in discharge water.Therefore, with the effective reuse of backwashing water, for saving water resources, realize the Sustainable development of water resources, have important economic implications and social effect.
If backwashing water is directly pumped into the filter tank reuse, because the content of suspended solid in waste water is higher, will obviously accelerate the rate of growth of head loss, thereby affect the normal operation of technique; And using film filtration technical finesse backwashing wastewater exists equipment more complicated, the problems such as running cost height.
Summary of the invention
The embodiment of the present invention provides a kind for the treatment of process of filter back washing waste water, is intended to solve that in prior art, the utilization ratio of backwashing wastewater is low, the reuse cost is high and the problem of contaminate environment.
The embodiment of the present invention is achieved in that a kind for the treatment of process of filter back washing waste water, and described method comprises the steps:
Collect waste water to equalizing tank, and the suspension liquid of described equalizing tank is passed through to mix with flocculation agent rear suction settling tank in pipeline;
Supernatant liquor in described settling tank after submersible pump is with flocculation treatment pumps into the filter tank front end and carries out reuse.
The embodiment of the present invention is passed through waste water suspension liquid and flocculation agent mixing postprecipitation, the water resources after the reuse precipitation process, and the method for wastewater treatment process that adopts is simple, cost is low and reduce secondary pollution, saves water resources.
Description of drawings
Fig. 1 represents the realization flow figure of the filter back washing method of wastewater treatment that the embodiment of the present invention provides;
Fig. 2 represents the work schematic diagram of the filter back washing method of wastewater treatment that the embodiment of the present invention provides.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention is passed through waste water suspension liquid and flocculation agent mixing postprecipitation, the water resources after the reuse precipitation process.
Fig. 1 shows the realization flow of the filter back washing method of wastewater treatment that the embodiment of the present invention provides, and details are as follows:
In step S101, collect waste water to equalizing tank, and the suspension liquid of equalizing tank is passed through to mix with flocculation agent rear suction settling tank in pipeline;
In an embodiment of the present invention, the addition of flocculation agent is 5-100mg/L, utilizes static line mixer to mix.
As a preferred embodiment of the present invention, suspension liquid standing time in settling tank is 30 minutes to 6 hours.
In step S102, the supernatant liquor in the settling tank after submersible pump reuse flocculation treatment.
In an embodiment of the present invention, the supernatant liquor in the settling tank after submersible pump reuse flocculation treatment specifically comprises:
1. the supernatant liquor with settling tank flows into clean water basin by overflow weir;
2. when the supernatant liquor in clean water basin reached predetermined height, submersible pump was opened automatically;
3. the water after submersible pump will be processed pumps into the filter tank front end and carries out reuse.
As a preferred embodiment of the present invention, also comprise after the supernatant liquor in the settling tank after submersible pump reuse flocculation treatment:
Collect the mud in equalizing tank and settling tank and carry out processed, the direct blowback equalizing tank of spoil disposal water is processed rear reuse.
Fig. 2 shows the work signal of the filter back washing method of wastewater treatment that the embodiment of the present invention provides, and details are as follows:
1. equalizing tank is arrived in the wastewater collection that produces in the filter back washing process, the backwashing wastewater suspension liquid of collecting in equalizing tank with sludge pump by certain flow suction horizontal sedimentation tank, and add online appropriate flocculation agent in pipeline, dosage is 5-100mg/L, utilize static line mixer fully to mix, suspension liquid enters design after settling tank, and to staticly settle the time be 30 minutes-6 hours;
2. after suspension liquid fully precipitated in horizontal sedimentation tank, supernatant liquor entered clean water basin by overflow weir, and after the liquid level in clean water basin reach a certain height, submersible pump was opened automatically, the water after processing is pumped into the filter tank front end carry out reuse;
3. the mud in equalizing tank and horizontal sedimentation tank is carried out processed through dewatering unit, the direct blowback equalizing tank of spoil disposal water is processed rear reuse.
Embodiment one
In the filter back washing process, the backwashing wastewater of whole process is collected in equalizing tank, with sludge pump, suspension liquid is pumped into horizontal sedimentation tank by certain flow, add the iron trichloride of 30mg/L and fully mix through the static line mixer of SX type in pipeline with water sprayer simultaneously.
The rear liquid of mixing designs the residence time in pipeline be 1 minute, suspension liquid sufficient standing precipitation in settling tank entered clean water basin by overflow weir in 4 hours, when the water surface in supernatant liquor surpasses the appointment liquid level, automatically start with the submersible pump of float valve liquidometer interlock, will process water and pump into filter tank front end reuse.
Collect the mud of equalizing tank and settling tank, with processing after the separating centrifuge dehydration, at last spoil disposal water also blowback equalizing tank is processed and reuse.
Embodiment two
In the filter back washing process, the backwashing wastewater of whole process is collected in equalizing tank, with sludge pump, suspension liquid is pumped into horizontal sedimentation tank by certain flow, add the polymerize aluminum chloride of 50mg/L and fully mix through the static line mixer of SY type in pipeline with water sprayer simultaneously.
The rear liquid of mixing designs the residence time in pipeline be 2 minutes, suspension liquid sufficient standing precipitation in settling tank entered clean water basin by overflow weir in 2 hours, when the water surface in supernatant liquor surpasses the appointment liquid level, automatically start with the submersible pump of float valve liquidometer interlock, will process water and pump into filter tank front end reuse.
Collect the mud of equalizing tank and settling tank, with processing after the separating centrifuge dehydration, at last spoil disposal water also blowback equalizing tank is processed and reuse.
The embodiment of the present invention is passed through waste water suspension liquid and flocculation agent mixing postprecipitation, the water resources after the reuse flocculation sediment is processed, and the method for wastewater treatment process that adopts is simple, cost is low and reduce secondary pollution, saves water resources.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the treatment process of a filter back washing waste water, is characterized in that, described method comprises the steps:
Collect waste water to equalizing tank, and the suspension liquid of described equalizing tank is passed through to mix with flocculation agent rear suction settling tank in pipeline;
Supernatant liquor in described settling tank after submersible pump reuse flocculation treatment.
2. the method for claim 1, is characterized in that, the addition of described flocculation agent is 5-100mg/L, utilizes static line mixer to mix.
3. the method for claim 1, is characterized in that, described suspension liquid standing time in settling tank is 30 minutes to 6 hours.
4. the method for claim 1, is characterized in that, the supernatant liquor in described described settling tank after submersible pump reuse flocculation treatment specifically comprises:
The supernatant liquor of described settling tank is flowed into clean water basin by overflow weir;
When the supernatant liquor in described clean water basin reached predetermined height, submersible pump was opened automatically;
The water of reuse after submersible pump is processed.
5. the method for claim 1, is characterized in that, also comprises after the supernatant liquor in described described settling tank after submersible pump reuse flocculation treatment:
With the excess sludge processed in described equalizing tank and settling tank, and reuse spoil disposal water after treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100576261A CN103121741A (en) | 2013-02-05 | 2013-02-05 | Treatment method of filter backwash wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100576261A CN103121741A (en) | 2013-02-05 | 2013-02-05 | Treatment method of filter backwash wastewater |
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| CN103121741A true CN103121741A (en) | 2013-05-29 |
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| CN2013100576261A Pending CN103121741A (en) | 2013-02-05 | 2013-02-05 | Treatment method of filter backwash wastewater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626337A (en) * | 2013-12-09 | 2014-03-12 | 天津工业大学 | Treatment method of sewage |
| CN103787535A (en) * | 2014-01-24 | 2014-05-14 | 东北师范大学 | Treatment method of sludge water of underground water plant |
| CN110436596A (en) * | 2019-09-05 | 2019-11-12 | 辽宁城建设计院有限公司 | A kind of processing of combined type backwashing water and reclaiming system |
| CN114804395A (en) * | 2021-01-21 | 2022-07-29 | 上海城投污水处理有限公司 | Backwashing wastewater treatment device and treatment process for denitrification deep bed filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041528A (en) * | 2007-03-19 | 2007-09-26 | 贵州绿色环保设备工程有限责任公司 | Treatment technique for 'calcium carbide acetylene method PVC production wastewater' by aeration flocculation process |
| CN101279805A (en) * | 2007-04-03 | 2008-10-08 | 天津工业大学 | Technological process and apparatus for drinking water treatment by film method |
| CN102515386A (en) * | 2011-12-01 | 2012-06-27 | 徐州明光环境设备有限公司 | Automatic mine water treatment process |
-
2013
- 2013-02-05 CN CN2013100576261A patent/CN103121741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041528A (en) * | 2007-03-19 | 2007-09-26 | 贵州绿色环保设备工程有限责任公司 | Treatment technique for 'calcium carbide acetylene method PVC production wastewater' by aeration flocculation process |
| CN101279805A (en) * | 2007-04-03 | 2008-10-08 | 天津工业大学 | Technological process and apparatus for drinking water treatment by film method |
| CN102515386A (en) * | 2011-12-01 | 2012-06-27 | 徐州明光环境设备有限公司 | Automatic mine water treatment process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626337A (en) * | 2013-12-09 | 2014-03-12 | 天津工业大学 | Treatment method of sewage |
| CN103626337B (en) * | 2013-12-09 | 2016-08-24 | 天津工业大学 | A kind of processing method of sewage |
| CN103787535A (en) * | 2014-01-24 | 2014-05-14 | 东北师范大学 | Treatment method of sludge water of underground water plant |
| CN110436596A (en) * | 2019-09-05 | 2019-11-12 | 辽宁城建设计院有限公司 | A kind of processing of combined type backwashing water and reclaiming system |
| CN114804395A (en) * | 2021-01-21 | 2022-07-29 | 上海城投污水处理有限公司 | Backwashing wastewater treatment device and treatment process for denitrification deep bed filter |
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Application publication date: 20130529 |