CN102849900A - Wood processing wastewater treatment method - Google Patents
Wood processing wastewater treatment method Download PDFInfo
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- CN102849900A CN102849900A CN2012103394788A CN201210339478A CN102849900A CN 102849900 A CN102849900 A CN 102849900A CN 2012103394788 A CN2012103394788 A CN 2012103394788A CN 201210339478 A CN201210339478 A CN 201210339478A CN 102849900 A CN102849900 A CN 102849900A
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Abstract
The invention relates to a wood processing wastewater treatment method which belongs to the field of industrial wastewater treatment. The method comprises the steps that: wood processing wastewater is precipitated in a precipitation tank; the wastewater is delivered through a grating and a filter net, such that most of suspended solids are removed; discharged water is delivered into a regulation tank; with actions of lime substances and acidic substances in the regulation tank, flocculate is formed, wherein impurity particles are entrained and adsorbed during and after the flocculate forming process; water discharged from the regulation tank is precipitated and filtered; discharged water is delivered to a press filter through a material pump, and most of tiny impurities are removed; discharged water is pumped into a biological filter tank and is delivered from bottom to top, wherein a filter material is waste fiber balls; discharged water is pumped into a water storage tank, and can be directly recycled. Filter cakes obtained by press-filtration has low water content. The treatment method has the advantages of low operation cost, large treatment capacity, high corrosion resistance, and environment-friendliness. With the combined multi-level biochemical treatment method, the wastewater can be thoroughly purified, and part of the wood in the wastewater can be recycled. Therefore, an environment protection requirement is satisfied.
Description
Technical field
The present invention relates to the wood working method of wastewater treatment, it belongs to the Industrial Wastewater Treatment field.
Background technology
The waste water that wood working is produced is owing to having some biochemical substances, and the composition of waste water impurities is more complicated also, and therefore common method of wastewater treatment is difficult to process this class waste water.The general fixed spool formula that adopts is filtered sewage, but the handled wastewater flow rate of this waste water plant is less, and when mud was more, liquid was difficult for separating with solid.
Summary of the invention
In view of the defective that prior art exists, the purpose of patent of the present invention provides a kind of combined multi-stage biochemical processing method, can purify liquid waste thoroughly, and can with the wooden reuse of the part in the waste water, meet the requirement of environmental protection.
For achieving the above object, the technology used in the present invention solution is the wood working method of wastewater treatment, it is characterized in that, may further comprise the steps:
(1) wood working waste water enters settling tank and precipitates; Through grid and filtering net, remove most suspended substances;
(2) water outlet enters equalizing tank, and equalizing tank is with lime material and acid effect, forms throw out, in forming the throw out process and after throw out forms, carries secretly and adsorbs impurity particle; Go out water precipitation, filtration through equalizing tank;
(3) water outlet of step (2) is pumped into pressure filter by dnockout, removes most minute impurities;
(4) water outlet with step (3) pumps into the biological filter, water inlet from bottom to top, and filtrate is useless fibrous nodules;
(5) water outlet with step (4) pumps into water reservoir, direct reuse.
Described grid inclination angle is 50 degree, and interval of grid strip is 20mm.The filter residue of described pressure filter is dried reuse after the shaping through pressurization.Described pressure filter is plate and frame, and dnockout pressure is 0.7 ~ 0.8MPa, and the circulation dnockout is 5 ~ 6 hours in plate-and-frame filter press, and temperature is room temperature.
After adopting such scheme, compared with prior art have following beneficial effect: the present invention is simple to operate, and the filter cake moisture content that is press-filtered out is low, and working cost is low, and treatment capacity is large, and erosion resistance is strong, protection of the environment.The combined multi-stage biochemical processing method can be purified liquid waste thoroughly, and can with the wooden reuse of the part in the waste water, meet the requirement of environmental protection.
Embodiment
Be processed as example with solid wood furniture, method of wastewater treatment of the present invention may further comprise the steps:
A large amount of wood shavings and the sawdusts of the rear generation of solid wood furniture processing, what a part was dry can directly process, and enters waste water but still have part to mix formation with water, and this part waste water introducing settling tank is precipitated; Be 50 degree through the inclination angle, interval of grid strip is grid and the filtering net of 20mm, removes most suspended substances; Water outlet enters equalizing tank, and equalizing tank is with lime material and acid effect, forms throw out, in forming the throw out process and after throw out forms, carries secretly and adsorbs impurity particle; Go out water precipitation, filtration through equalizing tank; Water outlet is pumped into plate and frame(type)filter press by dnockout, and dnockout pressure is 0.7 ~ 0.8MPa, and the circulation dnockout is 5 ~ 6 hours in plate-and-frame filter press, and temperature is room temperature, removes most minute impurities; Water outlet pumps into the biological filter, water inlet from bottom to top, and filtrate is useless fibrous nodules; Water outlet pumps into water reservoir, direct reuse.The filter residue of pressure filter is dried reuse after the shaping through pressurization.
The present invention is simple to operate, and the filter cake moisture content that is press-filtered out is low, and working cost is low, and treatment capacity is large, and erosion resistance is strong, protection of the environment.The combined multi-stage treatment process can be purified liquid waste thoroughly, and can with the wooden reuse of the part in the waste water, meet the requirement of environmental protection.
Claims (4)
1. the wood working method of wastewater treatment is characterized in that, may further comprise the steps:
(1) wood working waste water enters settling tank and precipitates; Through grid and filtering net, remove most suspended substances;
(2) water outlet enters equalizing tank, and equalizing tank is with lime material and acid effect, forms throw out, in forming the throw out process and after throw out forms, carries secretly and adsorbs impurity particle; Go out water precipitation, filtration through equalizing tank;
(3) water outlet of step (2) is pumped into pressure filter by dnockout, removes most minute impurities;
(4) water outlet with step (3) pumps into the biological filter, water inlet from bottom to top, and filtrate is useless fibrous nodules;
(5) water outlet with step (4) pumps into water reservoir, direct reuse.
2. wood working method of wastewater treatment according to claim 1 is characterized in that: described grid inclination angle is 50 degree, and interval of grid strip is 20mm.
3. wood working method of wastewater treatment according to claim 1 is characterized in that: the filter residue process pressurization of described pressure filter, oven dry, reuse after the shaping.
4. wood working method of wastewater treatment according to claim 1, it is characterized in that: described pressure filter is plate and frame, and dnockout pressure is 0.7 ~ 0.8MPa, and the circulation dnockout is 5-6 hour in plate-and-frame filter press, and temperature is room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210339478.8A CN102849900B (en) | 2012-09-14 | 2012-09-14 | Wood working method of wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210339478.8A CN102849900B (en) | 2012-09-14 | 2012-09-14 | Wood working method of wastewater treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102849900A true CN102849900A (en) | 2013-01-02 |
| CN102849900B CN102849900B (en) | 2016-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210339478.8A Active CN102849900B (en) | 2012-09-14 | 2012-09-14 | Wood working method of wastewater treatment |
Country Status (1)
| Country | Link |
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| CN (1) | CN102849900B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147845A (en) * | 2014-08-19 | 2014-11-19 | 佛山市金凯地过滤设备有限公司 | Filter press front charging and filtering structure |
| CN107473459A (en) * | 2017-10-13 | 2017-12-15 | 重庆华亚家私有限公司 | A kind of method of timber processing waste water processing |
| CN107827301A (en) * | 2017-11-29 | 2018-03-23 | 柳州市鸿联木业有限公司 | Timber processing wastewater treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673119A (en) * | 2005-03-23 | 2005-09-28 | 安徽工业大学 | Biological purifying process of seriously polluted river water |
| CN201268647Y (en) * | 2008-05-29 | 2009-07-08 | 北京能拓高科技有限公司 | Small-sized domestic sewage processing system |
| CN102502972A (en) * | 2011-11-01 | 2012-06-20 | 常州大学 | Method using downflow biological aerated filter to treat algal slurry press filtrate |
-
2012
- 2012-09-14 CN CN201210339478.8A patent/CN102849900B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673119A (en) * | 2005-03-23 | 2005-09-28 | 安徽工业大学 | Biological purifying process of seriously polluted river water |
| CN201268647Y (en) * | 2008-05-29 | 2009-07-08 | 北京能拓高科技有限公司 | Small-sized domestic sewage processing system |
| CN102502972A (en) * | 2011-11-01 | 2012-06-20 | 常州大学 | Method using downflow biological aerated filter to treat algal slurry press filtrate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147845A (en) * | 2014-08-19 | 2014-11-19 | 佛山市金凯地过滤设备有限公司 | Filter press front charging and filtering structure |
| CN104147845B (en) * | 2014-08-19 | 2016-06-29 | 佛山市金凯地过滤设备有限公司 | A kind of pressure filter front end fed filtration structure |
| CN107473459A (en) * | 2017-10-13 | 2017-12-15 | 重庆华亚家私有限公司 | A kind of method of timber processing waste water processing |
| CN107827301A (en) * | 2017-11-29 | 2018-03-23 | 柳州市鸿联木业有限公司 | Timber processing wastewater treatment method |
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| Publication number | Publication date |
|---|---|
| CN102849900B (en) | 2016-03-09 |
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