CN101823786B - Method for reducing production wastewater quantity of ramie fibre - Google Patents
Method for reducing production wastewater quantity of ramie fibre Download PDFInfo
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- CN101823786B CN101823786B CN2010101712293A CN201010171229A CN101823786B CN 101823786 B CN101823786 B CN 101823786B CN 2010101712293 A CN2010101712293 A CN 2010101712293A CN 201010171229 A CN201010171229 A CN 201010171229A CN 101823786 B CN101823786 B CN 101823786B
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Abstract
The invention relates to a method for reducing the wastewater quantity of ramie fibre production, belonging to the ramie degummed wastewater treatment method. The invention solves the problems that the wastewater obtained in each step of the existing degummed wastewater treatment method is not recycled, the wastewater utilization rate is low, the mixed wastewater of all steps is difficult to treat, and the treatment cost is increased. The method of the invention comprises the following steps: separately collecting the wastewater generated from the biological treatment step, chemical processing step, baking and beating step, bleaching step and rinsing step in the ramie fibre production process according to the wastewater pollution level and adopting different methods to treat wastewater according to the characteristics of wastewater in different steps. Therefore, the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) of wastewater discharged to a terminal water treatment device are greatly reduced, the treatment pressure and treatment cost of the terminal water treatment device are lowered; and the wastewater treatment capacity is large, the efficiency is high, wastewater in different steps can be separately treated and recycled, and the wastewater utilization rate is greatly improved.
Description
Technical field
The invention belongs to the ramie-degumming waste water treatment process, be specifically related to a kind of method that reduces production wastewater quantity of ramie fibre.
Background technology
Ramie is important textile fibres crop, China's ramie aboundresources, and output accounts for more than 90% of Gross World Product.The ramie phloem ultimate fibre is long, ditch shape cavity is arranged in the middle of the ramee, tube wall porous crack, and elongated, tough and tensile, that quality is light, moisture absorption is loose is wet fast.Ramee (degummed ramie) is pure white mercerising, can purely spin, also can with blending such as cotton, silk, hair, chemical fibre.Functions such as that ramee has is anticorrosion, fungi-proofing, mildew-resistant, all kinds of health care products of suitable weaving are a kind of good textile raw materials, are acknowledged as " king of natural fiber ".
Yet ramie phloem contains colloid more than 30%, the processing of will coming unstuck before weaving processing.And ramie-degumming waste water chemical oxygen demand concentration, colourity height, complex chemical composition contains a large amount of hemicelluloses, pectin substance, xylogen and adipocere matter, the ash material that grades in the waste water, and major part is difficult to degraded, and biodegradability is relatively poor.Traditional processing ramie-degumming waste water method such as materialization, biochemistry etc. are low to chroma removal rate, and water outlet chemical oxygen demand (COD) (COD), colourity all do not reach discharging standards.China grass degumming produces waste water enterprise is being perplexed in the pollution problem of environment always, has influenced the performance of ramie producing region resources advantage and the development of ramie industry.
Easily the Huaming discloses a kind of ramie-degumming waste water and boiling-off waste vapour comprehensive utilization process in the application for a patent for invention of publication number CN1072467, has proposed to cross chloride wastewater and has been used to join chlorine after filtering, and peracid waste water is used to the pickling of heating after filtering.This method has that technology is simple, energy-conservation, when joint, reduce pollute, prolonged boiler work-ing life etc. advantage.But its technology only relates to the minority waste water of minority workshop section, and in fact most of waste water still can not be by effective recycling.
Lu Jindeng etc. are in the patent of invention of publication number CN1821111, a kind of processing reuse method of ramie-degumming waste water is disclosed, its technical scheme is to stir for some time add a certain amount of ferrous sulfate in ramie-degumming waste water after, stir for some time after adding a certain amount of hydrogen peroxide again, stir for some time after adding a certain amount of unslaked lime again, quiescent setting for some time again, handle the back effluent reuse in or part be back to boiling-off production, or it is mixed with the waste water of other operation generation, greatly reduce the pollutant load of mixed waste water, improved the biodegradability of mixed waste water, created condition for follow-up biological treatment, making ramie-degumming waste water handle the back qualified discharge becomes possibility.But its art breading cycle is long, and with the mixed processing of different step waste water of different nature, the waste water after the processing can not utilize in this step cycle, and can only be back to use part steps, in fact wastewater flow rate is still very big, can not fundamentally solve practical problems.
Manufacturing method of ramie, generally include pre-treatment step, biological treatment step, chemical treatment step, beating step, blanching step, water-washing step, dehydrating step, oil supply step, dry step, combing step and baking step, wherein biological treatment step, chemical treatment step, beating step, blanching step and water-washing step have waste water to produce; The problem that above prior art exists is that mainly each step waste water does not have individual curing recycle, water reuse rate low, and the waste water of each step mix after more together intractability increase, processing cost increases.
Summary of the invention
The present invention proposes a kind of method that reduces production wastewater quantity of ramie fibre, solving existing each step waste water of degumming waste water treatment process does not have recycle, water reuse rate low, and intractability increase together again after the waste water of each step mixes, the problem that processing cost increases.
A kind of method that reduces production wastewater quantity of ramie fibre of the present invention is handled the biological treatment step of ramee production, chemical treatment step, beating step, waste water that blanching step and water-washing step produced respectively, it is characterized in that:
The waste water that biological treatment step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid drains into the terminal water treatment device;
The waste water that chemical treatment step is produced carries out solid-liquid separation, remove solid residue, remaining liquid input chemical treatment step after adding alkali to practice agent recycles, adding alkali practices the agent quality to account for the per-cent of adding back liquid total mass is 0.1%～0.8%, every circulation primary is added an alkali and is practiced agent, circulate to add after 3～60 batches and carry out solid-liquid separation after coagulating agent stirs, remove solid residue, remaining liquid is drained into the terminal water treatment device; It is 0.001%～0.1% that interpolation coagulating agent quality accounts for the per-cent of adding back liquid total mass;
The waste water that the beating step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid input beating step cycle is used, and circulates to carry out solid-liquid separation after 3～100 batches, removes solid residue, and remaining liquid is drained into the terminal water treatment device;
The waste water that blanching step is produced carries out solid-liquid separation, remove solid residue, remaining liquid drops into blanching step and recycles after adding clorox, add clorox 0.05～1g in the remaining liquid of every 1L, every circulation primary is added each sodium chlorate, circulates after 3～100 batches, carries out solid-liquid separation, remove solid residue, remaining liquid is drained into the terminal water treatment device;
After the waste water that water-washing step is produced is handled by exposure in sunshine, use as chemical treatment step, beating step and blanching step water.
Described a kind of method that reduces production wastewater quantity of ramie fibre is characterized in that:
In described biological treatment step, chemical treatment step, beating step and the blanching step, when carrying out solid-liquid separation, adopt continuous centrifuge centrifugation or Plate Filtration to separate, the liquid after the separation is used micro-filtrate membrane filtration again.
Described a kind of method that reduces production wastewater quantity of ramie fibre is characterized in that:
In the described chemical treatment step, it is the miscellany of sodium hydroxide, sodium polyphosphate and water glass that described alkali is practiced agent, and its mass percent is: sodium hydroxide 90%～100%, sodium polyphosphate 0～10%, water glass 0～10%; Described coagulating agent is a polymerize aluminum chloride.
The present invention collects the waste water that biological treatment step, chemical treatment step, beating step, blanching step and water-washing step in the ramee production process produce step by step according to the contaminated wastewater degree is different, waste water characteristic at different step adopts different methods to handle respectively, chemical oxygen demand (COD), the biochemical oxygen demand (BOD) of the sewage that drains into the terminal water treatment device are reduced greatly, alleviated the pressure and the processing cost of terminal water treatment device; Wastewater treatment capacity is big, efficient is high, and each step waste water can be handled respectively and recycle, and the water reuse rate improves greatly.
It is more as shown in table 1 that the present invention and existing ramee production technique drain into the sewage index of terminal water treatment device.
Table 1
As can be seen from the table, the sewage that the present invention discharged, pH value, chemical oxygen demand (COD) and biochemical oxygen demand (BOD) all obviously reduce.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention, and among the figure, solid arrow is represented the ramee trend, dotted arrow express liquid trend.
Embodiment
Embodiment 1
The 36t waste water that biological treatment step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid drains into the terminal water treatment device;
The 18t waste water that chemical treatment step is produced carries out solid-liquid separation, remove solid residue, remaining liquid input chemical treatment step after adding 18.02kg alkali to practice agent recycles, adding alkali practices the agent quality to account for the per-cent of adding back liquid total mass is 0.1%, every circulation primary is added an alkali and is practiced agent, circulate to add after 60 batches and carry out solid-liquid separation after the 180g polymerize aluminum chloride stirs, remove solid residue, remaining liquid is drained into the terminal water treatment device; It is 0.001% that interpolation polymerize aluminum chloride quality accounts for the per-cent of adding back liquid total mass; It is the miscellany of 16.22kg sodium hydroxide, 900g sodium polyphosphate and 900g water glass that described alkali is practiced agent, and its mass percent is: sodium hydroxide 90%, sodium polyphosphate 5%, water glass 5%.
The 378t waste water that the beating step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid input beating step cycle is used, and circulates to carry out solid-liquid separation after 3 batches, removes solid residue, and remaining liquid is drained into the terminal water treatment device;
The 8t waste water that blanching step is produced carries out solid-liquid separation, remove solid residue, remaining liquid drops into blanching step and recycles after adding the 390g clorox, add clorox 0.05g in the remaining liquid of every 1L, every circulation primary is added each sodium chlorate, circulates after 3 batches, carries out solid-liquid separation, remove solid residue, remaining liquid is drained into the terminal water treatment device;
After the 258t waste water that water-washing step is produced is handled by exposure in sunshine, use as chemical treatment step, beating step and blanching step water.
In described biological treatment step, chemical treatment step, beating step and the blanching step, when carrying out solid-liquid separation, adopt the continuous centrifuge centrifugation, the liquid after the separation is used micro-filtrate membrane filtration again.
After measured, the liquid total mass that is discharged to the terminal water treatment device of the present invention is 130.9t, only is in the ramee production process all 18.75% of the waste water total masses.
Embodiment 2
The 36t waste water that biological treatment step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid drains into the terminal water treatment device;
The 18t waste water that chemical treatment step is produced carries out solid-liquid separation, remove solid residue, remaining liquid input chemical treatment step after adding 72.29kg alkali to practice agent recycles, adding alkali practices the agent quality to account for the per-cent of adding back liquid total mass is 0.4%, every circulation primary is added an alkali and is practiced agent, circulate to add after 30 batches and carry out solid-liquid separation after the 1.8kg polymerize aluminum chloride stirs, remove solid residue, remaining liquid is drained into the terminal water treatment device; It is 0.01% that interpolation polymerize aluminum chloride quality accounts for the per-cent of adding back liquid total mass; It is sodium hydroxide that described alkali is practiced agent, and its mass percent is: sodium hydroxide 100%.
The 378t waste water that the beating step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid input beating step cycle is used, and circulates to carry out solid-liquid separation after 50 batches, removes solid residue, and remaining liquid is drained into the terminal water treatment device;
The 8t waste water that blanching step is produced carries out solid-liquid separation, remove solid residue, remaining liquid drops into blanching step and recycles after adding the 780g clorox, add clorox 0.1g in the remaining liquid of every 1L, every circulation primary is added each sodium chlorate, circulates after 50 batches, carries out solid-liquid separation, remove solid residue, remaining liquid is drained into the terminal water treatment device;
After the 258t waste water that water-washing step is produced is handled by exposure in sunshine, use as chemical treatment step, beating step and blanching step water.
In described biological treatment step, chemical treatment step, beating step and the blanching step, when carrying out solid-liquid separation, adopt Plate Filtration to separate, the liquid after the separation is used micro-filtrate membrane filtration again.
After measured, the liquid total mass that is discharged to the terminal water treatment device of the present invention is 44.15t, only is in the ramee production process all 6.33% of the waste water total masses.
Embodiment 3
The 36t waste water that biological treatment step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid drains into the terminal water treatment device;
The 18t waste water that chemical treatment step is produced carries out solid-liquid separation, remove solid residue, remaining liquid input chemical treatment step after adding 145.2kg alkali to practice agent recycles, adding alkali practices the agent quality to account for the per-cent of adding back liquid total mass is 0.8%, every circulation primary is added an alkali and is practiced agent, circulate to add after 3 batches and carry out solid-liquid separation after the 18.0kg polymerize aluminum chloride stirs, remove solid residue, remaining liquid is drained into the terminal water treatment device; It is 0.1% that interpolation polymerize aluminum chloride quality accounts for the per-cent of adding back liquid total mass. It is the miscellany of 130.7kg sodium hydroxide and 14.5kg sodium polyphosphate that described alkali is practiced agent, and its mass percent is: sodium hydroxide 90%, sodium polyphosphate 10%.
The 378t waste water that the beating step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid input beating step cycle is used, and circulates to carry out solid-liquid separation after 100 batches, removes solid residue, and remaining liquid is drained into the terminal water treatment device;
The 8t waste water that blanching step is produced carries out solid-liquid separation, remove solid residue, remaining liquid drops into blanching step and recycles after adding the 3.9kg clorox, add clorox 0.5g in the remaining liquid of every 1L, every circulation primary is added each sodium chlorate, circulates after 100 batches, carries out solid-liquid separation, remove solid residue, remaining liquid is drained into the terminal water treatment device;
After the waste water that water-washing step is produced is handled by exposure in sunshine, use as chemical treatment step, beating step and blanching step water.
In described biological treatment step, chemical treatment step, beating step and the blanching step, when carrying out solid-liquid separation, adopt the continuous centrifuge centrifugation, the liquid after the separation is used micro-filtrate membrane filtration again.
After measured, the liquid total mass that is discharged to the terminal water treatment device of the present invention is 40.12t, only is in the ramee production process all 5.75% of the waste water total masses.
Embodiment 4
The 36t waste water that biological treatment step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid drains into the terminal water treatment device;
The 18t waste water that chemical treatment step is produced carries out solid-liquid separation, remove solid residue, remaining liquid input chemical treatment step after adding 72.29kg alkali to practice agent recycles, adding alkali practices the agent quality to account for the per-cent of adding back liquid total mass is 0.4%, every circulation primary is added an alkali and is practiced agent, circulate to add after 20 batches and carry out solid-liquid separation after the 1.8kg polymerize aluminum chloride stirs, remove solid residue, remaining liquid is drained into the terminal water treatment device; It is 0.01% that interpolation polymerize aluminum chloride quality accounts for the per-cent of adding back liquid total mass; It is the miscellany of 130.7kg sodium hydroxide and 14.5kg water glass that described alkali is practiced agent, and its mass percent is: sodium hydroxide 90%, water glass 10%.
The 378t waste water that the beating step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid input beating step cycle is used, and circulates to carry out solid-liquid separation after 30 batches, removes solid residue, and remaining liquid is drained into the terminal water treatment device;
The 8t waste water that blanching step is produced carries out solid-liquid separation, remove solid residue, remaining liquid drops into blanching step and recycles after adding the 780g clorox, add clorox 1g in the remaining liquid of every 1L, every circulation primary is added each sodium chlorate, circulates after 30 batches, carries out solid-liquid separation, remove solid residue, remaining liquid is drained into the terminal water treatment device;
After the 258t waste water that water-washing step is produced is handled by exposure in sunshine, use as chemical treatment step, beating step and blanching step water.
In described biological treatment step, chemical treatment step, beating step and the blanching step, when carrying out solid-liquid separation, adopt Plate Filtration to separate, the liquid after the separation is used micro-filtrate membrane filtration again.
After measured, the liquid total mass that is discharged to the terminal water treatment device of the present invention is 49.31t, only is in the ramee production process all 7.06% of the waste water total masses.
Claims (1)
1. method that reduces production wastewater quantity of ramie fibre is handled the biological treatment step of ramee production, chemical treatment step, beating step, waste water that blanching step and water-washing step produced respectively, it is characterized in that:
The waste water that biological treatment step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid drains into the terminal water treatment device;
The waste water that chemical treatment step is produced carries out solid-liquid separation, remove solid residue, remaining liquid input chemical treatment step after adding alkali to practice agent recycles, adding alkali practices the agent quality to account for the per-cent of adding back liquid total mass is 0.1%～0.8%, every circulation primary is added an alkali and is practiced agent, circulate to add after 3～60 batches and carry out solid-liquid separation after coagulating agent stirs, remove solid residue, remaining liquid is drained into the terminal water treatment device; It is 0.001%～0.1% that interpolation coagulating agent quality accounts for the per-cent of adding back liquid total mass; It is the miscellany of sodium hydroxide, sodium polyphosphate and water glass that described alkali is practiced agent, and its mass percent is: sodium hydroxide 90%～100%, sodium polyphosphate 0～10%, water glass 0～10%; Described coagulating agent is a polymerize aluminum chloride;
The waste water that the beating step is produced carries out solid-liquid separation, removes solid residue, and remaining liquid input beating step cycle is used, and circulates to carry out solid-liquid separation after 3～100 batches, removes solid residue, and remaining liquid is drained into the terminal water treatment device;
The waste water that blanching step is produced carries out solid-liquid separation, remove solid residue, remaining liquid drops into blanching step and recycles after adding clorox, add clorox 0.05～1 g in the remaining liquid of per 1 L, every circulation primary is added each sodium chlorate, circulates after 3～100 batches, carries out solid-liquid separation, remove solid residue, remaining liquid is drained into the terminal water treatment device;
After the waste water that water-washing step is produced is handled by exposure in sunshine, use as chemical treatment step, beating step and blanching step water.
2. a kind of method that reduces production wastewater quantity of ramie fibre as claimed in claim 1 is characterized in that:
In described biological treatment step, chemical treatment step, beating step and the blanching step, when carrying out solid-liquid separation, adopt continuous centrifuge centrifugation or Plate Filtration to separate, the liquid after the separation is used micro-filtrate membrane filtration again.
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| CN2010101712293A CN101823786B (en) | 2010-05-13 | 2010-05-13 | Method for reducing production wastewater quantity of ramie fibre |
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| CN2010101712293A CN101823786B (en) | 2010-05-13 | 2010-05-13 | Method for reducing production wastewater quantity of ramie fibre |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102863116A (en) * | 2012-07-12 | 2013-01-09 | 湖南润久科技有限公司 | Method and device for repeatedly utilizing ramie biological degumming waste water |
| CN110422958A (en) * | 2018-05-01 | 2019-11-08 | 杨子嵬 | A kind of ramie enzyme degumming waste liquid circulation utilizes method and device |
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