CN102329044A - Method for treating wastewater from bamboo product - Google Patents
Method for treating wastewater from bamboo product Download PDFInfo
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- CN102329044A CN102329044A CN201110220473A CN201110220473A CN102329044A CN 102329044 A CN102329044 A CN 102329044A CN 201110220473 A CN201110220473 A CN 201110220473A CN 201110220473 A CN201110220473 A CN 201110220473A CN 102329044 A CN102329044 A CN 102329044A
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Abstract
The invention discloses a method for treating wastewater from a bamboo product. In the method, the wastewater from the bamboo product is added with water for diluting and added with drugs for adjusting the pH value; and then the adjusted wastewater is sequentially treated by an anaerobic expanded sludge bed (EGSB) reactor, a membrane bioreactor (MBR) and a nano filtration (NF) device and is finally discharged after reaching the standard. According to the method disclosed by the invention, 97 percent of CODCr (Chemical Oxygen Demand) in boiling wastewater in the processing process of the bamboo product is removed by using an EGSB-MBR combined process, thus the burden of post treatment is reduced and methane generated by the treatment process is reasonably recovered. The effluent in a biochemical pool is deeply treated by adopting a nanofiltration technology, so that the final effluent reaches national sewage discharge standard.
Description
Technical field
The invention belongs to water-treatment technology field, relate to a kind of bamboo product method of wastewater treatment.
Background technology
The bamboo product industry is important industry of China, yet, be not effectively addressed with a large amount of waste water that is produced in the bamboo product industry production process (being bamboo product waste water), brought great challenge to ecotope.Bamboo product mainly contains bamboo floor, bamboo curtain splint class, bamboo mat class, bamboo offset plate, bamboo artwork, bamboo charcoal and bamboo biological products class (like fresh Succus Bambusae, bamboo vinegar liquid, Folium Bambosae flavone etc.); Different according to its product, bamboo product waste water roughly can be divided into boiling waste water, alkali soaks waste water, bamboo pulp waste water and dyeing waste-water.These waste water all contain large amount of organic such as bamboo cell content; Its major ingredient comprises with sugar being main cell slurries class material, be dyestuff macromole and amino acid, Folium Bambosae flavone class, tannins and the plant pigments class material that adds in the master's organic acid substance, dyeing course with acetate and small molecules straight chain humic acids, concentration of organic wastewater height (average COD
CrBe about 20000mg/L), colourity is big, pollutant component is complicated, directly enters the severe contamination that can cause surface water in the body water, area even the underground water bigger in factory's density all can receive pollution to a certain degree.This not only threatens local ecology and water body environment, also will bring serious harm to local resident's domestic water and tap water.
Current, because bamboo product waste water is lacked sophisticated treatment process, the discharging of this type of waste water has caused great influence to some geographic ecotopes, and then has influence on the Sustainable development of whole bamboo product industry.
Summary of the invention
The present invention is directed to the deficiency of prior art, a kind of bamboo product method of wastewater treatment is provided.This method realizes processing of bamboo product waste water high-efficiency and biogas effective recycling, has ensured the Sustainable development of bamboo product industry.
A kind of bamboo product method of wastewater treatment, this method comprises the steps:
1) bamboo product waste water is added water through equalizing tank and dilute, and add sheet alkali control pH value;
2) waste water gets into anaerobic expanded sludge bed reactor (EGSB) reactor drum through lift pump and carries out anaerobic treatment after acidication, and the biogas that produces in the fermenting process gets into gas-holder and utilizes after desulfurization;
3) the anaerobism water outlet gets into membrane bioreactor (MBR) reactor drum that anoxic pond, Aerobic Pond and ultrafiltration film group device (UF) form respectively and carries out a biological disposal upon; Adopt gas blower that Aerobic Pond is carried out continuous aeration; The water outlet part of ultra-filtration membrane is back to the anoxic pond circular treatment, and another part gets into UF and produces in the pond;
4) waste water produces the pond by UF and gets into nanofiltration device (NF) and carry out advanced treatment, nf membrane water outlet qualified discharge or advance reuse factory in, and the liquid concentrator of nanofiltration generation is partly refluxed to equalizing tank, and another part is back to the MBR system and carries out circular treatment.
Bamboo product waste water is through dilution, former water COD
CrConcentration is controlled at 20000 mg/L, adopts sheet alkali that the pH value is adjusted to 6.8～7.3.
Waste water residence time in the EGSB anaerobic digestor after regulating is 100～120h.
In whole M BR system, MBR treatment system hydraulic retention is 20 hours, and sludge concentration is controlled at 6000～8000mg/L in the reactor drum.
The diaphragm type of the used membrane module of nanofiltration device is a polyamide composite film, and single membrane element nominal useful area is 7.6m
2, for 2000ppm NaCl solution, the water production rate under 25 ℃ of water temperatures and intake pressure 0.48MPa (70psi) condition is 220.8L/h (1400gpd), rejection is 85%-95%.
The present invention takes bamboo product waste water thinking of the comprehensive regulation again after pre-treatment.Waste water is stablized the anaerobic treatment load through dilution and acidication, helps effective operation of bulk treatment system.Waste water is after EGSB reactor drum anaerobic treatment, and most organism obtains degraded, simultaneously the biogas that produces in the anaerobic treatment process is carried out recycling, has realized energy recovery.Water outlet is carried out a biological disposal upon through the MBR system again, further degraded organic pollutant wherein, and the crown_interception through nf membrane makes larger molecular organics remaining in the waste water obtain removing at last, makes its qualified discharge.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in Figure 1, at first bamboo product waste water is added water through equalizing tank and dilute, and add sheet alkali control pH value to 6.8～7.3, control the COD of former water
CrConcentration is 20520 mg/L, NH
4 +The concentration of-N is 713 mg/L, and specific conductivity is 5205 μ s/cm, and colourity is 2100 times.Waste water gets into the anaerobic treatment that the EGSB anaerobic jar carries out 100 ~ 120 h behind acidication, the biogas of generation fully utilizes after desulfurization is handled, and the anaerobism water outlet then gets into the MBR treatment system, at this moment waste water COD
CrConcentration is 1860 mg/L, NH
4 +The concentration of-N is 147 mg/L, and specific conductivity is 1302 μ s/cm, and colourity is 970 times.
Comprehensive wastewater after anaerobic treatment reduces organic loading significantly gets into the MBR treatment system, further removes colourity and organism in the waste water, and the hydraulic detention time of MBR system is 20 h, and sludge concentration is controlled at 6000 ~ 8000 mg/L respectively in the reactor drum.Through the comprehensive wastewater COD after the MBR biological treatment
CrConcentration is 583 mg/L, NH
4 +The concentration of-N is 42 mg/L, and specific conductivity is 765 μ s/cm, and colourity is 430 times.Wherein part return of waste water to anoxic pond is carried out circular treatment, and another part gets into nanofiltration device and carries out advanced treatment.
Waste water after nanofiltration device is handled, the COD of final outflow water
CrConcentration is 42 mg/L, NH
4 +The concentration of-N is 0.9 mg/L, and specific conductivity is 38 μ s/cm, and colourity is 3 times, and effluent quality is lower than national sewage comprehensive emission standard (GB8978-1996) primary standard.The dense water that nanofiltration process produces is back to equalizing tank respectively and the MBR system carries out circular treatment, the film water outlet then discharge or factory in reuse.
Claims (5)
1. a bamboo product method of wastewater treatment is characterized in that this method comprises the steps:
Step 1) adds water with bamboo product waste water through equalizing tank dilutes, and adds sheet alkali control pH value;
Step 2) waste water gets into anaerobic expanded sludge bed reactor (EGSB) reactor drum through lift pump and carries out anaerobic treatment after acidication, and the biogas that produces in the fermenting process gets into gas-holder and utilizes after desulfurization;
The water outlet of step 3) anaerobism gets into membrane bioreactor (MBR) reactor drum of anoxic pond, Aerobic Pond and ultrafiltration film group device (UF) composition respectively and carries out a biological disposal upon; Adopt gas blower that Aerobic Pond is carried out continuous aeration; The water outlet part of ultra-filtration membrane is back to the anoxic pond circular treatment, and another part gets into UF and produces in the pond;
Step 4) waste water produces the pond by UF and gets into nanofiltration device (NF) and carry out advanced treatment, nf membrane water outlet qualified discharge or advance reuse factory in, and the liquid concentrator of nanofiltration generation is partly refluxed to equalizing tank, and another part is back to the MBR system and carries out circular treatment.
2. a kind of bamboo product method of wastewater treatment as claimed in claim 1 is characterized in that: bamboo product waste water is through dilution, former water COD
CrConcentration is controlled at 20000 mg/L, adopts sheet alkali that the pH value is adjusted to 6.8～7.3.
3. a kind of bamboo product method of wastewater treatment as claimed in claim 1 is characterized in that: the waste water residence time in the EGSB anaerobic digestor after regulating is 100～120h.
4. a kind of bamboo product method of wastewater treatment as claimed in claim 1 is characterized in that: in whole M BR system, MBR treatment system hydraulic retention is 20 hours, and sludge concentration is controlled at 6000～8000mg/L in the reactor drum.
5. a kind of bamboo product method of wastewater treatment as claimed in claim 1 is characterized in that: the diaphragm type of the used membrane module of nanofiltration device is a polyamide composite film, and single membrane element nominal useful area is 7.6m
2, for 2000ppm NaCl solution, the water production rate under 25 ℃ of water temperatures and intake pressure 0.48MPa (70psi) condition is 220.8L/h (1400gpd), rejection is 85%-95%.
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| CN2011102204739A CN102329044B (en) | 2011-08-03 | 2011-08-03 | Method for treating wastewater from bamboo product |
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| CN2011102204739A CN102329044B (en) | 2011-08-03 | 2011-08-03 | Method for treating wastewater from bamboo product |
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| CN102329044A true CN102329044A (en) | 2012-01-25 |
| CN102329044B CN102329044B (en) | 2013-11-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508636A (en) * | 2013-09-25 | 2014-01-15 | 黄健 | Food industrial wastewater treatment system |
| CN105668952A (en) * | 2016-04-25 | 2016-06-15 | 广东东日环保有限公司 | Smart two-membrane integrated sewage treatment system |
| CN106495394A (en) * | 2016-10-20 | 2017-03-15 | 安吉逢春污水处理有限公司 | A kind of bamboo product processing waste water processing system and its processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113047A (en) * | 2007-06-20 | 2008-01-30 | 江南大学 | Method of treating hard-degrading high concentrated organic wastewater |
| CN101125721A (en) * | 2006-08-18 | 2008-02-20 | 东丽纤维研究所（中国）有限公司 | Technique for reusing sewage |
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2011
- 2011-08-03 CN CN2011102204739A patent/CN102329044B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125721A (en) * | 2006-08-18 | 2008-02-20 | 东丽纤维研究所（中国）有限公司 | Technique for reusing sewage |
| CN101113047A (en) * | 2007-06-20 | 2008-01-30 | 江南大学 | Method of treating hard-degrading high concentrated organic wastewater |
Non-Patent Citations (2)
| Title |
|---|
| 邓喜红: "竹制品蒸煮废水的处理", 《化工设计通讯》 * |
| 陈智远 等: "UASB／生化工艺处理竹制品废", 《中国给水排水》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508636A (en) * | 2013-09-25 | 2014-01-15 | 黄健 | Food industrial wastewater treatment system |
| CN105668952A (en) * | 2016-04-25 | 2016-06-15 | 广东东日环保有限公司 | Smart two-membrane integrated sewage treatment system |
| CN106495394A (en) * | 2016-10-20 | 2017-03-15 | 安吉逢春污水处理有限公司 | A kind of bamboo product processing waste water processing system and its processing method |
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| CN102329044B (en) | 2013-11-13 |
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Owner name: ANJI FENGCHUN SEWAGE TREATMENT CO., LTD. BEIJING E Free format text: FORMER OWNER: JINSHAN ENVIRONMENT PROTECTION GROUP CO., LTD. BEIJING ECOJOY WATER TECHNOLOGY CO., LTD. Effective date: 20131018 |
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Effective date of registration: 20131018 Address after: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Applicant after: Zhejiang University Applicant after: Anji Fengchun Sewage Treatment Co., Ltd. Applicant after: Beijing Ecojoy Water Technology Co., Ltd. Address before: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Applicant before: Zhejiang University Applicant before: Jinshan Environmental Protection Group Co., Ltd. Applicant before: Beijing Ecojoy Water Technology Co., Ltd. |
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