CN1403391A - Sewage treating process - Google Patents
Sewage treating process Download PDFInfo
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- CN1403391A CN1403391A CN 02133911 CN02133911A CN1403391A CN 1403391 A CN1403391 A CN 1403391A CN 02133911 CN02133911 CN 02133911 CN 02133911 A CN02133911 A CN 02133911A CN 1403391 A CN1403391 A CN 1403391A
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Abstract
The pulp sheet sewage treating process includes mixing pulp sheet sewage and chemical fiber sewage, regulating pH to below 3 and flocculating deposition before the upper sewage is fed to adsorption tower; adsorption to make the sewage pass through adsorbing resin layer in the flow rate of 1-50 times resin volume each hour; and neutralization via adding lime cream, acetylene residue or organic solvent and pH regulating to 6-9, and the supernatant is discharged. The said technological process is simple, low in cost and high in treating effect.
Description
Technical field:
The present invention is relevant with the treatment process of pulp sewage, and is especially relevant with the purified pulp sewage water treatment method.
Background technology:
Purified pulp is mainly to be raw material with the linters, adopts alkaline process to form.Contain residual alkali and a large amount of organism and inorganic substance in its sewage,, be difficult to biological degradation as the degraded product of xylogen, carbohydrate, pectin, fat, wax and sodium salt etc.The purified pulp concentration of wastewater is lower than papermaking wastewater, good water solubility, and difficult the separation, intractability is big, can't adopt classical art breading such as alkali recovery.The characteristics of purified pulp sewage are that quantity is big, colourity is high, organism and inorganics are of a great variety, are difficult for decomposing, and it is big to administer technical difficulty.Traditional technology is still continued to use in chemical fiber factory sewage disposal both at home and abroad at present, poor processing effect, add the huge cost of investment and the working cost of great number, make the improvement of purified pulp sewage, become the great difficult problem of viscose fibre industry survival and development, be badly in need of adopting hi-tech to administer purified pulp sewage, to realize qualified discharge.
The content of invention:
The purpose of this invention is to provide that a kind of technical process is simple and direct, processing cost is low, the method for the processing pulp sewage of recyclable utilization after the sewage disposal.
The present invention is achieved in that
The present invention handles the method for pulp sewage, comprises the steps:
(1) combination treatment:
The pulp alkaline sewage is regulated pH≤3 with the viscose fiber sour water behind the aeration or sulfuric acid or hydrochloric acid in the pond, after flocculation sediment is finished, throw out drained into carry out dehydration and drying after sludge thickener concentrates and handle, with mixing pit top oettIed sewage input absorption with macroporous adsorbent resin top of tower water inlet
(2) adsorption treatment:
The oettIed sewage that enters adsorption tower with resin absorption layer volume 1-50 doubly/hour flow by the resin absorption layer, remove the coloured organic contamination impurity in the oettIed sewage, water outlet is a water white transparency, through resin absorption tower bottom water outlet input neutralization tank,
(3) neutralizing treatment:
Add milk of lime or carbide slag or organic solvent and carry out neutralizing treatment in neutralization tank, adjust pH is 6-9, and the mud after the precipitate and separate is done dehydration and drying and handled, and supernatant liquor is the discharge water that sewage disposal finishes.Organic solvent can be acetone or methyl alcohol or ethanol.
After absorption with macroporous adsorbent resin of the present invention is saturated, under normal temperature, normal pressure, sodium sulfate mixing solutions with 1-20% concentration hydrogen sodium oxide and 1-20% concentration carries out the desorption processing as desorbing agent, carry out manipulation of regeneration with 1-20% concentration sulfuric acid or hydrochloric acid soln as regenerated liquid then, recycle after the resin regeneration, the elutriant spray coal burning of manipulation of regeneration is handled.
Macroporous adsorbent resin of the present invention is CA-505.
The present invention tells attached tower and is Cylinder shape, selects for use impregnating material to make, and diameter is 1 with the tower height ratio: 5-8, be provided with the porous transverse wall in the tower, and lay≤30 purpose separation nets on the dividing plate, some trees refer to the tower parallel running.
Sludge dehydrating and drying in the step of the present invention (1) is handled the back as agricultural fertilizer or cement additire.
The adsorption treatment of step of the present invention (2) is to carry out under normal temperature, normal pressure, and oettIed sewage passes through the resin absorption layer with 5-30 times/hour flow of resin absorption layer volume.
The technology of the present invention technical process is simple and direct, quick, efficient, reliable and stable, suitability is strong, has less investment, floor space is little, current consumption is little, working cost is cheap, economical and practical characteristics.The present invention is strong with the CA-505 macroporous adsorbent resin ability of disposing of sewage, and adsorption function is stable, is not subjected to temperature, season and such environmental effects, and resin regeneration can be recycled after handling, and the plastic resin treatment sewage quantity is 750-1200 with the ratio of resin: 1.The resin regeneration elutriant can directly spray coal burning and handle because amount is little.The present invention has not only solved the difficult problem of purified pulp sewage disposal qualified discharge, and the water after administering also can all be recycled.Discharge water water white transparency, every index can reach the GB8978-1996 primary standard.
Embodiment:
Pulp sewage is mixed in mixing pit with viscose fiber sour water after aeration is handled, and sewage quantity is 500m
3Transfer pH＜3, left standstill 2～3 hours, treat that flocculation sediment is finished after, throw out excretory pore at the bottom of the pond drains into sludge thickener, spissated mud carries out can making usefulness such as efficient farming fertilizer, cement additire after dehydration and drying handles; With the attached top of tower water inlet of mixing pit upper clear supernate input macroporous adsorbent resin, carry out adsorption treatment.
Resin tower is a plastic material, and diameter is 1000mm, filling CA-505 macroporous adsorbent resin 500kg.Under normal temperature, normal pressure, with 15～45m
3/ h flow velocity is by the resin absorption layer.Remove the coloured organic contamination impurity in the decontaminated water, through resin tower bottom water outlet input neutralization tank, water outlet is a water white transparency.Treat 500m
3After the sewage adsorption treatment is finished, under normal temperature, normal pressure, with 0.5～1.5m
3Sodium hydroxide (1-20%) and sodium sulfate (1-20%) mixing solutions make desorbing agent, ratio of mixture is carried out desorption to resin and is handled, and uses 0.5～1.5m then
3Sulfuric acid (1-20%) solution make regenerated liquid, carry out resin regeneration and handle.Recycle after the resin regeneration, resin regeneration elutriant spray coal burning is handled.
With the water input neutralization tank after the resin absorption processing, in neutralization tank, add 50% milk of lime, also available carbide slag liquid or acetone replacing lime breast carry out neutralizing treatment, transfer pH7～9, flow into settling tank then and carry out precipitate and separate, and mud is done dehydration and drying and is handled; Supernatant liquor is the discharge water that sewage disposal finishes.Discharge water is a water white transparency, and its water-quality guideline reaches the GB8978-1996 primary standard fully after testing, recyclable utilization.
Claims (6)
1, the present invention handles the method for pulp sewage, comprises the steps:
Combination treatment:
(1) the pulp alkaline sewage is regulated pH≤3 with the viscose fiber sour water behind the aeration or sulfuric acid or hydrochloric acid in the pond, after flocculation sediment is finished, throw out drained into carry out dehydration and drying after sludge thickener concentrates and handle, with mixing pit top oettIed sewage input absorption with macroporous adsorbent resin top of tower water inlet
(2) adsorption treatment:
The oettIed sewage that enters adsorption tower with resin absorption layer volume 1-50 doubly/hour flow by the resin absorption layer, remove the coloured organic contamination impurity in the oettIed sewage, water outlet is a water white transparency, through resin absorption tower bottom water outlet input neutralization tank,
(3) neutralizing treatment:
Add milk of lime or carbide slag or organic solvent and carry out neutralizing treatment in neutralization tank, adjust pH is 6-9, and the mud after the precipitate and separate is done dehydration and drying and handled, and supernatant liquor is the discharge water that sewage disposal finishes.
2, method according to claim 1, after it is characterized in that absorption with macroporous adsorbent resin is saturated, under normal temperature, normal pressure, sodium sulfate mixing solutions with 1-20% concentration hydrogen sodium oxide and 1-20% concentration carries out the desorption processing as desorbing agent, carry out manipulation of regeneration with 1-20% concentration sulfuric acid or hydrochloric acid soln as regenerated liquid then, recycle after the resin regeneration, the elutriant spray coal burning of manipulation of regeneration is handled.
3, method according to claim 1 is characterized in that macroporous adsorbent resin is CA-505.
4, method according to claim 1 and 2 is characterized in that telling attached tower and is Cylinder shape, selects for use impregnating material to make, and diameter is 1 with the tower height ratio: 5-8, be provided with the porous transverse wall in the tower, and lay≤30 purpose separation nets on the dividing plate, some trees refer to the tower parallel running.
5, method according to claim 1 is characterized in that the sludge dehydrating and drying in the step (1) is handled the back as agricultural fertilizer or cement additire.
6, method according to claim 1, the adsorption treatment that it is characterized in that step (2) is to carry out under normal temperature, normal pressure, oettIed sewage passes through the resin absorption layer with 5-30 times/hour flow of resin absorption layer volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133911 CN1403391A (en) | 2002-10-16 | 2002-10-16 | Sewage treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133911 CN1403391A (en) | 2002-10-16 | 2002-10-16 | Sewage treating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1403391A true CN1403391A (en) | 2003-03-19 |
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ID=4747464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02133911 Pending CN1403391A (en) | 2002-10-16 | 2002-10-16 | Sewage treating process |
Country Status (1)
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| CN (1) | CN1403391A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494087C (en) * | 2005-12-30 | 2009-06-03 | 宜宾丝丽雅股份有限公司 | Process for treating acidic waste water of viscose fibre industry |
| CN104370393A (en) * | 2014-12-09 | 2015-02-25 | 江苏盖亚环境工程有限公司 | Paper-making wastewater treatment method |
| CN105152268A (en) * | 2015-10-26 | 2015-12-16 | 中国科学院青海盐湖研究所 | Treatment method of alkaline pulp waste liquid |
| CN107311330A (en) * | 2017-08-18 | 2017-11-03 | 江苏海普功能材料有限公司 | The method that alcohol biochemical tail water decolourizes |
-
2002
- 2002-10-16 CN CN 02133911 patent/CN1403391A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100494087C (en) * | 2005-12-30 | 2009-06-03 | 宜宾丝丽雅股份有限公司 | Process for treating acidic waste water of viscose fibre industry |
| CN104370393A (en) * | 2014-12-09 | 2015-02-25 | 江苏盖亚环境工程有限公司 | Paper-making wastewater treatment method |
| CN104370393B (en) * | 2014-12-09 | 2016-08-17 | 江苏盖亚环境工程有限公司 | A kind of processing method of paper waste |
| CN105152268A (en) * | 2015-10-26 | 2015-12-16 | 中国科学院青海盐湖研究所 | Treatment method of alkaline pulp waste liquid |
| CN107311330A (en) * | 2017-08-18 | 2017-11-03 | 江苏海普功能材料有限公司 | The method that alcohol biochemical tail water decolourizes |
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