CN105461190A - Method for coprocessing of sludge in sewage plant and pickling waste water in iron and steel plant - Google Patents
Method for coprocessing of sludge in sewage plant and pickling waste water in iron and steel plant Download PDFInfo
- Publication number
- CN105461190A CN105461190A CN201511024134.8A CN201511024134A CN105461190A CN 105461190 A CN105461190 A CN 105461190A CN 201511024134 A CN201511024134 A CN 201511024134A CN 105461190 A CN105461190 A CN 105461190A
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- CN
- China
- Prior art keywords
- sludge
- pressure
- pickling waste
- plant
- mud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Abstract
The invention provides a method for coprocessing of sludge in a sewage plant and pickling waste water in an iron and steel plant. The method comprises the steps of A1, sludge conditioning, wherein sludge in the sewage plant and pickling waste water in the iron and steel plant are injected into a conditioning pool to be mixed and react in the conditioning pool, and then quick lime is added and stirring is conducted; A2, filter-pressing treatment, wherein sludge in the conditioning pool is sent to a filter press for filter pressing, and a filter cake generated by the filter press is squeezed to form sludge blocks with the water content of 30-65%. The method has the advantages of being low in operation cost and the like.
Description
Technical field
The present invention relates to mud and wastewater treatment, particularly the method for sewage plant sludge and Steel Plant's pickling waste waters associated treatment.
Background technology
Existing most sewage work adopts belt filter press and whizzer to carry out processed to concentration basin and septic tank mud, moisture percentage in sewage sludge after process is about 80%, after part of contaminated water treatment plant starts to adopt chemical agent to add, the mode of mechanism filter-pressing carries out sludge dewatering treatment, moisture percentage in sewage sludge significantly reduces, but the consumption of chemical industry pharmaceutical products is large.These methods have following deficiency:
One is that water ratio is too high, and the difficulty of subsequent disposal is increased;
Two is that chemical agent addition is large, and the energy consumption of Chemicals production process, material consumption and disposal of pollutants problem can not be ignored.
Summary of the invention
In order to solve the deficiency in above-mentioned prior art, the invention provides a kind of method of sewage plant sludge and Steel Plant's pickling waste waters associated treatment, avoiding the use of chemical industry medicament, and making moisture percentage in sewage sludge be reduced to 30-65%.
The object of the invention is to be achieved through the following technical solutions:
A method for sewage plant sludge and Steel Plant's pickling waste waters associated treatment, said method comprising the steps of:
(A1) sludge conditioning:
Sewage plant sludge, Steel Plant's pickling waste waters inject conditioner, mix, react in conditioner;
Add unslaked lime and stir;
(A2) press filtration process:
Mud in described conditioner gives pressure filter press filtration;
The filter cake that pressure filter generates is squeezed, forms the block mud that water ratio is 30-65%.
According to above-mentioned method, preferably, in step (A1), the amount of the Steel Plant's pickling waste waters added is 15 ~ 60% of dewatered sludge quality.
According to above-mentioned method, preferably, in step (A1), the amount of the unslaked lime added is the 4-15% of dewatered sludge quality.
According to above-mentioned method, preferably, in step (A2), the concrete mode of press filtration is:
Low pressure feed pump startup, to pressure filter note mud, feed pressure is 0.5-1.0MPa;
High pressure charging pump startup, carries out secondary material feeding to pressure filter, and feed pressure is 1.2-1.6MPa.
According to above-mentioned method, preferably, in step (A2), the pressure of squeezing state is 1.8-2.2MPa.
According to above-mentioned method, preferably, in step (A1), the concentration injecting the mud of conditioner is 79-99%.
According to above-mentioned method, preferably, the iron concentration in Steel Plant's pickling waste waters is 2.5-10%.
Compared with prior art, the beneficial effect that the present invention has is:
Utilize the industrial effluent of Steel Plant, avoid the use of chemical industry pharmaceutical products, comprehensive treating process iron content acid black water factory mud, economy and environment benefit all achieves remarkable lifting.
Embodiment
Following description describe Alternate embodiments of the present invention how to implement to instruct those skilled in the art and to reproduce the present invention.In order to instruct technical solution of the present invention, simplifying or having eliminated some conventional aspects.Those skilled in the art should understand that the modification that is derived from these embodiments or replace will within the scope of the invention.Those skilled in the art should understand that following characteristics can combine to form multiple modification of the present invention in every way.Thus, the present invention is not limited to following Alternate embodiments, and only by claim and their equivalents.
Embodiment 1:
A method for sewage plant sludge and Steel Plant's pickling waste waters associated treatment, comprises the following steps:
(A1) sludge pretreatment:
Concentration basin sludge concentration is about 99%, through the mode of Cemented filling to equalizing tank, Steel Plant's pickling waste waters of dewatered sludge quality 15% enters equalizing tank by adding of agent infusion simultaneously, and in Steel Plant's pickling waste waters, iron concentration is 10%, and mud mixes in equalizing tank with pickling waste waters, reaction; The unslaked lime of rear interpolation dewatered sludge quality 10% carries out stirring and adjusting, and 45min key saves.After stirring and adjusting completes, press filtration can be carried out to mud.
(A2) press filtration process
1. low pressure feed: low pressure feed pump startup, to pressure filter note mud, feed pressure is about 0.6MP.
2. high pressure charging: high pressure charging pump startup, carry out secondary material feeding to pressure filter, feed pressure is about 1.4MP.
3. squeeze: press pump starts, and squeezes filter cake, the pressure of squeezing state is 2MP.
4. blanking: unclamp filter plate after squeezing process completes, filter cloth can be formed the block mud that water ratio is 30-65%.
Embodiment 2.
A method for sewage plant sludge and Steel Plant's pickle solution associated treatment, comprising:
(A1) sludge pretreatment:
Belt press filtration mud (79% is moisture) dilution is about 97% concentration, through the mode of Cemented filling to equalizing tank, Steel Plant's pickling waste waters of dewatered sludge quality 60% enters equalizing tank by adding of agent infusion simultaneously, in Steel Plant's pickling waste waters, iron concentration is 2.5%, and mud mixes in equalizing tank with pickling waste waters, reaction; The unslaked lime of rear interpolation dewatered sludge quality 10% carries out stirring and adjusting, and 45min key saves.After stirring and adjusting completes, press filtration can be carried out to mud.
(A2) press filtration process
1. low pressure feed: low pressure feed pump startup, to pressure filter note mud, feed pressure is about 0.6MP.
2. high pressure charging: high pressure charging pump startup, carry out secondary material feeding to pressure filter, feed pressure is about 1.4MP.
3. squeeze: press pump starts, and squeezes filter cake, the pressure of squeezing state is 2MP.
4. blanking: unclamp filter plate after squeezing process completes, filter cloth can be formed the block mud that water ratio is 30-65%.
Above-described embodiment is only the numerical value exemplarily given between concentration ranges, pressure range, reinforced quality area, certainly can also be other numerical value in interval, other numerical value also can realize the object of inventing, and this can expect for the technology of this area.
Claims (7)
1. a method for sewage plant sludge and Steel Plant's pickling waste waters associated treatment, said method comprising the steps of:
(A1) sludge conditioning:
Sewage plant sludge, Steel Plant's pickling waste waters inject conditioner, mix, react in conditioner;
Add unslaked lime and stir;
(A2) press filtration process:
Mud in described conditioner gives pressure filter press filtration;
The filter cake that pressure filter generates is squeezed, forms the block mud that water ratio is 30-65%.
2. method according to claim 1, is characterized in that: in step (A1), and the amount of the Steel Plant's pickling waste waters added is 15 ~ 60% of dewatered sludge quality.
3. method according to claim 1, is characterized in that: in step (A1), and the amount of the unslaked lime added is the 4-15% of dewatered sludge quality.
4. method according to claim 1, is characterized in that: in step (A2), and the concrete mode of press filtration is:
Low pressure feed pump startup, to pressure filter note mud, feed pressure is 0.5-1.0MPa;
High pressure charging pump startup, carries out secondary material feeding to pressure filter, and feed pressure is 1.2-1.6MPa.
5. method according to claim 1, is characterized in that: in step (A2), and the pressure of squeezing state is 1.8-2.2MPa.
6. method according to claim 1, is characterized in that: in step (A1), and the concentration injecting the mud of conditioner is 79-99%.
7. method according to claim 1, is characterized in that: the iron concentration in Steel Plant's pickling waste waters is 2.5-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024134.8A CN105461190A (en) | 2015-12-30 | 2015-12-30 | Method for coprocessing of sludge in sewage plant and pickling waste water in iron and steel plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024134.8A CN105461190A (en) | 2015-12-30 | 2015-12-30 | Method for coprocessing of sludge in sewage plant and pickling waste water in iron and steel plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105461190A true CN105461190A (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511024134.8A Pending CN105461190A (en) | 2015-12-30 | 2015-12-30 | Method for coprocessing of sludge in sewage plant and pickling waste water in iron and steel plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105461190A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402834A (en) * | 1974-05-08 | 1983-09-06 | Albert Klein Kg | Method for dewatering sludge-type material |
| CN101693593A (en) * | 2009-09-30 | 2010-04-14 | 连小美 | Chemical conditioning method of dehydration pretreatment of activated sludge |
| CN102815850A (en) * | 2012-08-01 | 2012-12-12 | 浙江捷丰环保技术工程有限公司 | Method of filter-pressing sludge of concentration tank and septic tank of sewage plant |
| CN203065328U (en) * | 2012-12-27 | 2013-07-17 | 天津水泥工业设计研究院有限公司 | Sludge deep dehydration system |
-
2015
- 2015-12-30 CN CN201511024134.8A patent/CN105461190A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402834A (en) * | 1974-05-08 | 1983-09-06 | Albert Klein Kg | Method for dewatering sludge-type material |
| CN101693593A (en) * | 2009-09-30 | 2010-04-14 | 连小美 | Chemical conditioning method of dehydration pretreatment of activated sludge |
| CN102815850A (en) * | 2012-08-01 | 2012-12-12 | 浙江捷丰环保技术工程有限公司 | Method of filter-pressing sludge of concentration tank and septic tank of sewage plant |
| CN203065328U (en) * | 2012-12-27 | 2013-07-17 | 天津水泥工业设计研究院有限公司 | Sludge deep dehydration system |
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Application publication date: 20160406 |
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| WD01 | Invention patent application deemed withdrawn after publication |