CN105884125A - Printing and dyeing wastewater treatment process characterized in low sludge output and low energy consumption - Google Patents
Printing and dyeing wastewater treatment process characterized in low sludge output and low energy consumption Download PDFInfo
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- CN105884125A CN105884125A CN201410819905.1A CN201410819905A CN105884125A CN 105884125 A CN105884125 A CN 105884125A CN 201410819905 A CN201410819905 A CN 201410819905A CN 105884125 A CN105884125 A CN 105884125A
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- dyeing wastewater
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Abstract
The invention relates to a printing and dyeing wastewater treatment process characterized in low sludge output and low energy consumption. The novel treatment combination process is designed based on the characteristics of large sludge output, high energy consumption and high operation expense of printing and dyeing wastewater treatment. The process comprises the steps that printing and dyeing wastewater enters a UASB hydrolytic acidification reactor firstly, then is subjected to ABC three-section aerobiotic treatment after hydrolytic acidification, and finally is subjected to coagulating sedimentation and up-to-standard discharging. The process mainly aims to reduce printing and dyeing wastewater treatment cost, and reduce sludge output and energy consumption for treatment of each ton of water on the premise that up-to-standard discharging of treated water can be achieved, and therefore overall printing and dyeing wastewater treatment cost is reduced. In this way, the problem that printing and dyeing wastewater treatment cost is high is solved.
Description
Technical field
The present invention relates to techniques of Dyeing Wastewater Treatment field, use a series of group technology to process dyeing waste water so that it is on the basis of qualified discharge, reduce mud generation amount and the energy consumption of whole system.
Background technology
Having substantial amounts of excess sludge in the processing procedure of sewage to produce, according to incompletely statistics, 2005, China created 3,500,000 tons of dewatered sludges altogether, and reaches 7,300,000 tons to its yield in 2010.And excess sludge produced by treatment of dyeing wastewater, it contains harmful substance, such as heavy metal, lead, cadmium etc., excess sludge produced in treatment of dyeing wastewater is carried out harmless treatment, it is the technical barrier in treatment of dyeing wastewater environment, and also can increase the processing cost of dyeing waste water.Therefore the sludge reduction during treatment of dyeing wastewater is increasingly paid attention to, " cleaning produces " this theory is combined by native system with mud decrement research in dyeing waste water, excess sludge in whole system inside in systems is digested, to reduce the sludge yield in treatment of dyeing wastewater, reduce treatment of dyeing wastewater energy consumption.
Summary of the invention
The invention aims to reduce the processing cost of dyeing waste water, it is ensured that treatment of dyeing wastewater qualified discharge, reduce the mud generation amount of whole system, and energy consumption.
The present invention have employed techniques below scheme for achieving the above object: the utilization of effectively hydrolyzing acidification reactor (UASB), the discharge of whole system mesophytization section excess sludge is only discharged from UASB effectively hydrolyzing acidification reactor；In aerobic section latter two sections, it is possible to form microorganism predacious organs structure, before the microorganism of a section digested in catalytic oxidation section, reduce the mud generation amount of aerobic section.
The present invention have employed techniques below scheme for achieving the above object: during three sections aerobic, the last period, and the dissolved oxygen of two sections controls respectively at 0.3mg/L, 0.8mg/L, have employed low dissolved oxygen technology, reduces the energy consumption of whole conversion zone.
Accompanying drawing explanation
Fig. 1 is low mud generation amount, low energy consumption printing and dyeing wastewater treatment system plane graph；
Fig. 2 is low mud generation amount, low energy consumption printing and dyeing wastewater treatment system artwork.
Detailed description of the invention
Implemented by the present invention, qualified discharge after treatment of dyeing wastewater can be made, also be able to reduce mud generation amount during treatment of dyeing wastewater, and energy consumption simultaneously, thus reduce the expense for the treatment of of dyeing wastewater.
Below in conjunction with the accompanying drawings, technical scheme is described in detail:
Dyeing waste water (1) is by after sulfur acid for adjusting pH, enter in (2) UASB reactor for hydrolysis and acidification, microorganism in UASB reactor for hydrolysis and acidification is hydrolyzed acidization, remove part COD in dyeing waste water, and improve the biodegradability of dyeing waste water, the UASB reactor for hydrolysis and acidification additionally used ensure that the SS of its water outlet, to reduce the process load of aerobic section.
UASB reactor for hydrolysis and acidification (2) water outlet enters in interception type aerobic reactor (3), controls dissolved oxygen concentration from interception type aerobic reactor (3) so that it is under the state being in low dissolved oxygen, reduces energy consumption.Waste water enters and enters into from interception type reactor (4) after interception type aerobic reactor (3), is re-introduced into contact-oxidation pool (5) afterwards.This Aerobic Process for Treatment system forms microorganism predation system from interception type reactor (4) with contact oxidation reactor (5), reduces the yield of mud.
From interception type aerobic reactor (3), (4) also exist automatic sludge returning, it is possible to ensure that whole sewage treatment facility has long higher sludge concentration and mud mud age.
Contact oxidation reactor (5) water outlet is intake in sedimentation tank (6), precipitates, and the aerobic sludge being precipitated out is back in UASB reactor for hydrolysis and acidification (2) carry out sludge digestion, reduces the sludge yield of whole system.
Sedimentation tank (6) sewage out flows to carry out coagulating sedimentation in coagulative precipitation tank (7), to guarantee the up to standard of the effluent quality of system, in whole system, mud produces and only discharges from UASB reactor for hydrolysis and acidification (2) and coagulative precipitation tank (7).
Claims (6)
1. it is characterized in that, comprise the following steps:
Dyeing waste water (1), through UASB effectively hydrolyzing acidification reactor (2).
Sewage after process flows into the aerobic reactor (3) of series connection, (4), (5), going out of aerobic reactor
Water, through (6) sedimentation tank, precipitates, after finally entering the process of (7) coagulative precipitation tank, and row up to standard
Go out.
Low sludge yield the most as claimed in claim 1, the printing and dyeing wastewater treatment system of low energy consumption.Its
Being characterised by, reactor for hydrolysis and acidification (2) uses UASB effectively hydrolyzing acidification reactor, its
The biodegradability of dyeing waste water can be improved, and keep the SS of water outlet.
Low mud generation amount the most as claimed in claim 1, the printing and dyeing wastewater treatment system of low energy consumption.
It is characterized in that, in aerobic reactor (3), (4), (5), what (3) (4) reactor used cuts certainly
Formula aerobic reactor, the catalytic oxidation formula reactor that (5) use.(3), (4), (5) reactor divide
Not controlling its dissolved oxygen is 0.3mg/L, 0.8mg/L, 2.5mg/L, and on the one hand it can be formed the most micro-
Biology, on the other hand can reduce energy consumption.
Low mud generation amount the most as claimed in claim 1, the printing and dyeing wastewater treatment system of low energy consumption.
It is characterized in that, the sludge reflux of the precipitation in sedimentation tank (6) to (2) UASB hydrolysis acidification reacts
In device.
Low mud generation amount the most as claimed in claim 1, the printing and dyeing wastewater treatment system of low energy consumption.
It is characterized in that, (3) (4) aerobic reactor mud therein mud can reach 70 days age, its (3)
(4) during excess sludge produced by section is also back to the reaction of (2) UASB hydrolysis acidification.
Low mud generation amount the most as claimed in claim 1, the printing and dyeing wastewater treatment system of low energy consumption.
It is characterized in that, the excess sludge of the microbial treatments section of whole system is all from (2) UASB hydrolysis acidification
Reaction is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819905.1A CN105884125A (en) | 2014-12-22 | 2014-12-22 | Printing and dyeing wastewater treatment process characterized in low sludge output and low energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819905.1A CN105884125A (en) | 2014-12-22 | 2014-12-22 | Printing and dyeing wastewater treatment process characterized in low sludge output and low energy consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105884125A true CN105884125A (en) | 2016-08-24 |
Family
ID=56701102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819905.1A Pending CN105884125A (en) | 2014-12-22 | 2014-12-22 | Printing and dyeing wastewater treatment process characterized in low sludge output and low energy consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105884125A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800050A (en) * | 2005-12-15 | 2006-07-12 | 南京大学 | Waste water treatment method of anerobic- anoxia-aerobic-coagulated precipitation |
| CN101045581A (en) * | 2007-04-27 | 2007-10-03 | 浙江大学 | Treating device for sludge self-return aerobic bios |
-
2014
- 2014-12-22 CN CN201410819905.1A patent/CN105884125A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800050A (en) * | 2005-12-15 | 2006-07-12 | 南京大学 | Waste water treatment method of anerobic- anoxia-aerobic-coagulated precipitation |
| CN101045581A (en) * | 2007-04-27 | 2007-10-03 | 浙江大学 | Treating device for sludge self-return aerobic bios |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |
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| WD01 | Invention patent application deemed withdrawn after publication |