CN104176890A - High-concentration industrial wastewater treatment method - Google Patents
High-concentration industrial wastewater treatment method Download PDFInfo
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- CN104176890A CN104176890A CN201410473143.4A CN201410473143A CN104176890A CN 104176890 A CN104176890 A CN 104176890A CN 201410473143 A CN201410473143 A CN 201410473143A CN 104176890 A CN104176890 A CN 104176890A
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Abstract
The invention relates to the technical field of water treatment, particularly a high-concentration industrial wastewater treatment method which is low in cost and simple to operate and can effectively remove heavy metals, nitrogen, phosphorus and harmful substances in industrial wastewater. The method is characterized by comprising the following steps: carrying out grid treatment on sewage to filter out large wastes, sending into a biofloculation tank to carry out biofloculation treatment, sending the sewage subjected to flocculation treatment into a primary sedimentation tank to perform primary sedimentation, sequentially sending into an anaerobic reactor and an aerobic reactor to carry out anaerobic reaction treatment and aerobic reaction treatment, sending into a secondary sedimentation tank, disinfecting the sewage discharged by the secondary sedimentation tank, and discharging or recycling. Compared with the prior art, the method enhances the acidification hydrolysis effect, improves the fluidization and mass transfer in the anaerobic reactor, enhances the reaction efficiency, and reduces the sludge discharge amount.
Description
Technical field:
The present invention relates to water-treatment technology field, specifically a kind of cost is low, easy and simple to handle, can effectively remove the high-concentration industrial-water treatment process of the objectionable impuritiess such as heavy metals in industrial wastewater, nitrogen, phosphorus.
Background technology:
China's water resources shortage, along with deepening constantly of National Sustainable Development Strategies, the emission problem of improvement and solution trade effluent becomes the urgent problem solving of needs.As the term suggests trade effluent is the sewage for discharging in every Industrial processes, wherein often contain the objectionable impuritiess such as heavy metal ion, nitrogen, phosphorus, even contain the polymerization organic pollutant of some hard degradation, if directly discharged, will bring and have a strong impact on to environment and people's health.
When application of active mud method is processed waste water, part organism can be absorbed by the microorganism in active sludge and oxygenolysis is simple inorganics, give off energy simultaneously, as the energy of microorganism self vital movement, another part organism, as the constitute of microorganism growth breeding, synthesizes new protoplasma, by the continuous propagation of microorganism, showing as system activity mud constantly increases, but actual use discovery, too much active sludge can make Biochemical Treatment variation.
It is also a kind of important sewage water treatment method that biofloculation is sent out, in water treatment procedure, by flocculation agent, poisonous by what be dispersed in water, objectionable impurities is settlement separate, flocculation agent is generally divided into inorganic salts flocculation agent, organic polymer coargulator, natural organic high-molecular flocculant, several large classes such as synthetic polymeric flocculant, wherein inorganic salts flocculation agent low price, but can have a negative impact to HUMAN HEALTH and environment, although organic polymer coargulator consumption is few, scum silica frost produces few, flocculation ability is strong, but its residual teratogenesis that easily causes, carcinogenic, mutagenesis, therefore use range is restricted.In recent years, the microbial flocculant of being made up of microorganism, owing to can overcoming the shortcoming of inorganic flocculating agent and organic floculant, is more and more paid attention to.
Summary of the invention:
The present invention is directed to the shortcoming and defect existing in prior art, proposed a kind of cost low, easy and simple to handle, can effectively remove the high-concentration industrial-water treatment process of the objectionable impuritiess such as heavy metals in industrial wastewater, nitrogen, phosphorus.
The present invention can reach by following measures:
A kind of high-concentration industrial-water treatment process, is characterized in that comprising the following steps:
Step 1: sewage, after grid is processed filtering larger refuse, is sent into biofloculation pond and carried out biofloculation processing, and biological flocculant is added and for improving the promotor of biological flocculant activity in biofloculation pond;
Step 2: the sewage after flocculation treatment is sent into primary sedimentation pond, after primary deposition, send into successively anaerobic reaction device, in aerobic reaction device, carry out anaerobic reaction processing, aerobic reaction processing, enter subsequently secondary sedimentation basins, wherein in anaerobic reaction device, add mud granule and anaerobic sludge particle promoter, described anaerobic sludge particle promoter is made up of following component: Calcium dichloride dihydrate 63%, Repone K 21%, iron(ic) chloride 3.5%, lytic enzyme 0.16%, polyacrylamide 0.14%, causticity starch 12.2%, anaerobic sludge particle promoter adds water and is configured to after solution that massfraction is 5%-6%, add anaerobic reaction device to,
Step 3: discharge or reuse after the sewage disinfection that secondary sedimentation basins is discharged.
The mud that in step 3 of the present invention, secondary sedimentation basins is discharged is all sent in biofloculation reaction tank tames into biological flocculant.
In step 2 of the present invention, the addition of anaerobic sludge granulating promotor is 0.6-0.7kg/tCOD.
In step 2 of the present invention, aerobic reaction device is provided with aerobic biological fluid-bed, aerobic biological fluid-bedly be provided with aerobic bacteria and double oxygen bacterium, sewage is sent into by aerobic biological fluid-bed bottom, after aerobic microbiological and facultative microbe reaction treatment, sent by aerobe vulcanization bed top, a part is sent into secondary sedimentation basins, and another part is sent into anaerobic reaction device to ensure in anaerobic reaction device in fluidized state, and dissolved oxygen 0.3-0.4ppm.
In step 2 of the present invention, anaerobic reaction device is with aerobic reaction device output flow than being 4:1, and sewage is 5-7 hour in the anaerobic reaction device residence time, and in aerobic reaction device, the residence time is 7-10 hour.
The present invention compared with prior art, have the following advantages: (1) combines aerobic reaction with anaerobic reaction, and constantly supplement fresh active sludge in anaerobic reaction device, improve acidification hydrolization effect, strengthen fluidisation and the mass transfer in anaerobic reaction device simultaneously, improved reaction efficiency; (2) can consume the excess sludge that part aerobic reaction produces, reduce by 30% sludge discharge; (3) by add granular sludge promotor in anaerobic reaction device, can effectively improve reaction efficiency, degraded toxic substance.
Brief description of the drawings:
Accompanying drawing 1 is schema of the present invention.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, the present invention proposes a kind of high-concentration industrial-water treatment process, it is characterized in that comprising the following steps:
Step 1: sewage, after grid is processed filtering larger refuse, is sent into biofloculation pond and carried out biofloculation processing, and biological flocculant is added and for improving the promotor of biological flocculant activity in biofloculation pond;
Step 2: the sewage after flocculation treatment is sent into primary sedimentation pond, after primary deposition, send into successively anaerobic reaction device, in aerobic reaction device, carry out anaerobic reaction processing, aerobic reaction processing, enter subsequently secondary sedimentation basins, wherein in anaerobic reaction device, add mud granule and anaerobic sludge particle promoter, described anaerobic sludge particle promoter is made up of following component: Calcium dichloride dihydrate 63%, Repone K 21%, iron(ic) chloride 3.5%, lytic enzyme 0.16%, polyacrylamide 0.14%, causticity starch 12.2%, anaerobic sludge particle promoter adds water and is configured to after solution that massfraction is 5%-6%, add anaerobic reaction device to,
Step 3: discharge or reuse after the sewage disinfection that secondary sedimentation basins is discharged.
The mud that in step 3 of the present invention, secondary sedimentation basins is discharged is all sent in biofloculation reaction tank tames into biological flocculant.
In step 2 of the present invention, the addition of anaerobic sludge granulating promotor is 0.6-0.7kg/tCOD.
In step 2 of the present invention, aerobic reaction device is provided with aerobic biological fluid-bed, aerobic biological fluid-bedly be provided with aerobic bacteria and double oxygen bacterium, sewage is sent into by aerobic biological fluid-bed bottom, after aerobic microbiological and facultative microbe reaction treatment, sent by aerobe vulcanization bed top, a part is sent into secondary sedimentation basins, and another part is sent into anaerobic reaction device to ensure in anaerobic reaction device in fluidized state, and dissolved oxygen 0.3-0.4ppm.
In step 2 of the present invention, anaerobic reaction device is 4: 1 with aerobic reaction device output flow ratio, and sewage is 5-7 hour in the anaerobic reaction device residence time, and in aerobic reaction device, the residence time is 7-10 hour.
The present invention compared with prior art, have the following advantages: (1) combines aerobic reaction with anaerobic reaction, and constantly supplement fresh active sludge in anaerobic reaction device, improve acidification hydrolization effect, strengthen fluidisation and the mass transfer in anaerobic reaction device simultaneously, improved reaction efficiency; (2) can consume the excess sludge that part aerobic reaction produces, reduce by 30% sludge discharge; (3) by add granular sludge promotor in anaerobic reaction device, can effectively improve reaction efficiency, degraded toxic substance.
Claims (5)
1. a high-concentration industrial-water treatment process, is characterized in that comprising the following steps:
Step 1: sewage, after grid is processed filtering larger refuse, is sent into biofloculation pond and carried out biofloculation processing, and biological flocculant is added and for improving the promotor of biological flocculant activity in biofloculation pond;
Step 2: the sewage after flocculation treatment is sent into primary sedimentation pond, after primary deposition, send into successively anaerobic reaction device, in aerobic reaction device, carry out anaerobic reaction processing, aerobic reaction processing, enter subsequently secondary sedimentation basins, wherein in anaerobic reaction device, add mud granule and anaerobic sludge particle promoter, described anaerobic sludge particle promoter is made up of following component: Calcium dichloride dihydrate 63%, Repone K 21%, iron(ic) chloride 3.5%, lytic enzyme 0.16%, polyacrylamide 0.14%, causticity starch 12.2%, anaerobic sludge particle promoter adds water and is configured to after solution that massfraction is 5%-6%, add anaerobic reaction device to,
Step 3: discharge or reuse after the sewage disinfection that secondary sedimentation basins is discharged.
2. a kind of high-concentration industrial-water treatment process according to claim 1, is characterized in that mud that secondary sedimentation basins in step 3 is discharged is all sent in biofloculation reaction tank to tame into biological flocculant.
3. a kind of high-concentration industrial-water treatment process according to claim 1, the addition that it is characterized in that anaerobic sludge granulating promotor in step 2 is 0.6-0.7kg/tCOD.
4. a kind of high-concentration industrial-water treatment process according to claim 1, it is characterized in that in step 2, aerobic reaction device is provided with aerobic biological fluid-bed, aerobic biological fluid-bedly be provided with aerobic bacteria and double oxygen bacterium, sewage is sent into by aerobic biological fluid-bed bottom, after aerobic microbiological and facultative microbe reaction treatment, sent by aerobe vulcanization bed top, a part is sent into secondary sedimentation basins, another part is sent into anaerobic reaction device to ensure in anaerobic reaction device in fluidized state, and dissolved oxygen 0.3-0.4ppm.
5. a kind of high-concentration industrial-water treatment process according to claim 1, it is characterized in that in step 2, anaerobic reaction device is 4: 1 with aerobic reaction device output flow ratio, sewage is 517 hours in the anaerobic reaction device residence time, and in aerobic reaction device, the residence time is 7-10 hour.
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| CN201410473143.4A CN104176890A (en) | 2014-09-17 | 2014-09-17 | High-concentration industrial wastewater treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219754A (en) * | 2016-09-13 | 2016-12-14 | 河海大学 | The removal of a kind of sewage phosphorus based on aerobic particle mud and recovery method |
| CN108569827A (en) * | 2018-05-31 | 2018-09-25 | 林丽敏 | A kind of sewage-treatment plant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718358A (en) * | 2012-06-08 | 2012-10-10 | 郑州梦溪环保科技有限公司 | Sewage treatment method |
| CN103159322A (en) * | 2013-03-29 | 2013-06-19 | 威海百克环保工程有限公司 | PTA (Pure Terephthalic Acid) sewage anaerobic sludge granulating accelerant |
| CN103466884A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Process for treating waste paper pulping and papermaking waste water |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718358A (en) * | 2012-06-08 | 2012-10-10 | 郑州梦溪环保科技有限公司 | Sewage treatment method |
| CN103159322A (en) * | 2013-03-29 | 2013-06-19 | 威海百克环保工程有限公司 | PTA (Pure Terephthalic Acid) sewage anaerobic sludge granulating accelerant |
| CN103466884A (en) * | 2013-09-12 | 2013-12-25 | 安徽省绿巨人环境技术有限公司 | Process for treating waste paper pulping and papermaking waste water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219754A (en) * | 2016-09-13 | 2016-12-14 | 河海大学 | The removal of a kind of sewage phosphorus based on aerobic particle mud and recovery method |
| CN106219754B (en) * | 2016-09-13 | 2019-11-12 | 河海大学 | A kind of removal of the sewage phosphorus based on aerobic particle mud and recovery method |
| CN108569827A (en) * | 2018-05-31 | 2018-09-25 | 林丽敏 | A kind of sewage-treatment plant |
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Application publication date: 20141203 |