CN102464376A - Method for treating lead-containing wastewater by utilizing biological waste residue base - Google Patents

Method for treating lead-containing wastewater by utilizing biological waste residue base Download PDF

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Publication number
CN102464376A
CN102464376A CN2011103207575A CN201110320757A CN102464376A CN 102464376 A CN102464376 A CN 102464376A CN 2011103207575 A CN2011103207575 A CN 2011103207575A CN 201110320757 A CN201110320757 A CN 201110320757A CN 102464376 A CN102464376 A CN 102464376A
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China
Prior art keywords
biological
waste residue
lead
wastewater
residue base
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Pending
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CN2011103207575A
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Chinese (zh)
Inventor
雷春生
雷思宇
金利军
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Changzhou Yahuan Environmental Protection Technology Co Ltd
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Changzhou Yahuan Environmental Protection Technology Co Ltd
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Priority to CN2011103207575A priority Critical patent/CN102464376A/en
Publication of CN102464376A publication Critical patent/CN102464376A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for treating lead-containing wastewater by utilizing a biological waste residue base, which belongs to the field of wastewater treatment in environment protection. The method particularly comprises the following steps of: adding waste residues produced in biological pharmaceutical industry into sorghum straws which are 1 to 1.5 times that of the weight of the waste residues, and respectively adding caustic soda in a ratio of 1 to 2g/kg, organic ketone in a ratio of 1 to 2g/kg and organic ester in a ratio of 0.5 to 1g/kg; stirring, uniformly mixing, controlling the content of dissolved oxygen to be 1.0 to 1.5mg/L, the pH value to be 7.5 to 9.5, the temperature to be 65 to 75 degrees centigrade and the electric potential to be -10 to -20mV, fully fermenting and curing for 15 to 25 days, sterilizing at high temperature and grinding to obtain a biological waste residue based absorbent; and adding the biological absorbent with addition amount of 2.0 to 3.0g/L into the lead-containing wastewater, adjusting the pH value of the wastewater to be 5.5 to 7.5, controlling the temperature to be 25 to 30 degrees centigrade, stirring for reaction for 1 to 6h, removing the absorbent by filtration, and detecting the content of lead ions in yielding water. The method disclosed by the invention has the characteristics of high absorption efficiency, simple process, low running expense, no secondary pollution in a treating process and the like, is favorable for widening the selection range of the absorbent in the biological treatment process of the wastewater, protecting environment and realizing waste recycling, and gets good social and economical benefits.

Description

A kind of method of utilizing biological waste residue base to handle lead waste water
Technical field
The present invention relates to a kind of method of utilizing biological waste residue base to handle lead waste water; Be specifically related to utilize and brewage waste residue and crop material etc. and make the method that biological waste residue base adsorbent is removed lead ion in the lead waste water, belong to field of waste water treatment in the environment protection through fermentation.
Background technology
Lead waste water is mainly derived from industries such as ore dressing, refining of petroleum, plating.Lead and compound thereof are a kind of nondegradable environmental pollutant, can flow into environment in a large number through waste water,waste gas and industrial residue, get into human body directly or indirectly through food chain, soil, water and air; The infringement hemopoietic system; Cause anaemia, neural system peripheral nerve inflammation, also can flow into cerebral tissue, infringement cerebellum and brain cortex cell with blood; Disturb metabolic activity, cause brain injury.
At present, handle heavy metal lead ion in the waste water, general chemical precipitation method, the ion exchange method of adopting in the industry.Chemical precipitation method equipment is simple, easy to operate, treatment effect is good, the processing of the lead waste water of high density, big flow is used more general, but expense is high, treatment capacity is little, poor selectivity, sludge quantity is big, mud is difficult for processing, be prone to cause secondary pollution.Ion exchange method has that floor space is little, convenient management, lead ion decreasing ratio are high; And handle the proper regenerated liquid that makes and reclaim as resource, can not cause secondary pollution, but one-time investment is big to environment; Working cost is high; Resin pollution or oxidation deactivation, regeneration is frequent, and also there is certain difficulty in the regeneration problem.
Biosorption process is the treatment process of emerging lead waste water, is developed rapidly in recent years, and be developing direction from now on.It is with the heavy metal ion in biological dead volume or the live body absorption waste water, has that loading capacity is big, selectivity is strong, efficient is high, consumptions is few, and especially suitable processing contains the low-concentration heavy metal ion waste water.Yet,,,, make its application obtain very big restriction again because its long action time, reaction efficiency are low like mikrobe for living microbe.In recent years, those obtain easily, cheap, adsorptive power becomes the object that people strive to find not second to the non-living body organism of living body biological sorbent material.
The present invention utilizes waste residue that biological-pharmacy produces and broomcorn straw etc. to make biological waste residue base adsorbent through fermentation; Realized the comprehensive utilization of a part of stalk; Protected environment; Widen the range of choice of biological wastewater treatment process sorbent material, realized the resource utilization of waste, had good social benefit and economic benefit.
Summary of the invention
The objective of the invention is for overcoming the deficiency of prior art, a kind of method of utilizing biological waste residue base to handle lead waste water is provided.The present invention has the adsorption efficiency height, and technology is simple, and working cost is low, and characteristics such as treating processes non-secondary pollution have made full use of the production waste, have realized the effect of the treatment of wastes with processes of wastes against one another.
Technical scheme of the present invention is following:
(1) get the waste residue that biological-pharmacy produces, add the broomcorn straw of 1~1.5 times of quality, and respectively with the ratio adding caustic soda of 1~3g/kg, the ratio of 1~2g/kg adds organic ketone, the ratio of 0.5~1g/kg adds organic ester;
(2) stir, mixing, control dissolved oxygen 1.1~1.5mg/L, pH=7.5~9.5, temperature is at 65~75 ℃, electromotive force-10~-20mV, the slaking 15~25 days of fully fermenting, high-temperature sterilization and pulverization process make biological waste residue base adsorbent;
(3) dosage with 2.0~3.0g/L joins biological waste residue base adsorbent in the lead waste water, and regulating wastewater pH is 5.5~7.5, and controlled temperature is at 25~30 ℃, and stirring reaction is the filtering sorbent material after 1~6 hour, detects the lead ion content of water outlet.
Described organic ketone is one or both in ortho-nitrophenyl ethyl ketone, ketopentamethylene, the butanone.
Described organic ester is one or both in Nikithan, glycerine triacetate, Iso Butyl Acetate, ETHYLE ACETATE, the ethyl propionate.
The biological waste residue base adsorbent of the present invention; Has huge specific surface area; Abundant hole; A large amount of mycelium wherein contains and dredges base, hydroxyl, carboxyl, imidazolyl, amino, guanidine radicals, imino-, mercaptan, thioether, carboxamido-group isoreactivity group, and the nitrogen in these groups, oxygen, phosphorus, sulphur etc. can provide lone-pair electron and heavy metal ion surface to form complex compound or inner complex; And the ion in the polysaccharide on mikrobe and the plant cell wall and the divalent-metal ion in the solution carry out IX, and the solution metal ion is adsorbed.
The best pH of adsorbents adsorb lead ion of the present invention confirms through laboratory simulation waste water; Get the leaded simulated wastewater of the 60mg/L of 1L; To regulate pH is 1~9 serial solution through adding sodium hydroxide or hydrochloric acid, adds the biological waste residue base adsorbent of 1g, stir 6h on the vibrator after; Filter, confirm the clearance (table 1) of sorbent material under different pH.Be higher than at 5.5 o'clock in the pH value, have the lead ion more than 99% to be removed, consider under the alkaline condition that lead ion can form deposition, therefore, this biology waste residue base adsorbent optimal adsorption pH scope is 5.5~7.5.
The biological waste residue base adsorbent of table 1 is in the removal of condition of different pH to lead ion
The pH value 3.5 4.5 5.5 6.5 7.5 8.5
Clearance (%) 23.8 45.3 99.0 99.5 98.4 79.5
The lead waste water concentration of the biological waste residue base adsorbent of the present invention suitable treatment; Be by a series of simulation lead waste water in best pH scope; Through measuring plumbum ion concentration in the filtrating; Total plumbous < 1.0mg/>L comes comprehensively to confirm in conjunction with the highest permission emission concentration of " integrated wastewater discharge standard " first kind pollutent.Getting plumbum ion concentration respectively is 10,20,40,80; 100,160, the simulated wastewater 1L of 300mg/L adds soda acid; The pH value of regulating each solution is 5.5~7.5, adds the biological waste residue base adsorbent of 1g, and vibration absorption 6h filters; Measure plumbum ion concentration (table 2) in the filtrating, in conjunction with the highest permission emission concentration of " integrated wastewater discharge standard " /> first kind pollutent total plumbous < 1.0mgL, definite plumbous highest point reason concentration.
The biological waste residue base adsorbent of table 2 is to the removal (unit: mg/L) of different starting point concentration lead ions
Starting point concentration 10 20 40 80 100 160 300
Filter liquor concentration 0.01 0.12 0.4 1.0 1.1 1.5 2
The present invention is for the higher waste water of lead tolerance, and clearance all can reach more than 90%, but remaining plumbum ion concentration has surpassed 1.0mg/L, does not have up to standardly, and therefore, when making sorbent material with the present invention's biology waste residue base, plumbum ion concentration can not surpass 80mg/L in the waste water.
Embodiment
Below in conjunction with instance the present invention is described in further detail.
Instance 1
Get the waste residue 300kg that biological-pharmacy produces, add 400kg and pulverize broomcorn straw, and add 0.6kg caustic soda, 0.5kg butanone, 0.2kg Nikithan; Stir mixing, control dissolved oxygen 1.4mg/L, pH=8.0; Temperature is at 65 ℃, electromotive force-11mV, the slaking 25 days of fully fermenting; The preliminary pulverizing, sterilization and dry 10h in 100 ℃ of baking ovens, utilize the plant kibbler to pulverize after; Cross the sample sifter of 1mm, obtain the biological waste residue base adsorbent of the present invention, this invents biological waste residue base adsorbent has a large amount of mikrobe dead cells; Have huge specific surface area, abundant hole, contain a large amount of carboxyls, hydroxyl, amino, carboxamido-group, thioether etc. can with the reactive group of complexing of metal ion.
Instance 2
The dosage of instance 1 biological waste residue base adsorbent with every liter of waste water 2.0g joined in the lead waste water that plumbum ion concentration is 5mg/L; Regulate wastewater pH=5.5 with sodium hydroxide or hydrochloric acid; Controlled temperature is at 25 ℃, and stirring reaction is the filtering sorbent material after 2 hours, and water outlet does not detect lead.
Instance 3
The dosage of instance 1 biological waste residue base adsorbent with every liter of waste water 2.2g joined in the lead waste water that plumbum ion concentration is 15mg/L; Regulate wastewater pH=6.0 with sodium hydroxide or hydrochloric acid; Controlled temperature is at 25 ℃; Stirring reaction is the filtering sorbent material after 3 hours, and the lead ion content of water outlet has dropped to 0.06mg/L, and plumbous clearance has reached 99.6%.
Instance 4
The dosage of instance 1 biological waste residue base adsorbent with every liter of waste water 2.4g joined in the lead waste water that plumbum ion concentration is 45mg/L; Regulate wastewater pH=6.5 with sodium hydroxide or hydrochloric acid; Controlled temperature is at 25 ℃; Stirring reaction is the filtering sorbent material after 3 hours, and the lead ion content of water outlet has dropped to 0.4mg/L, and plumbous clearance has reached 99.1%.
Instance 5
The dosage of instance 1 biological waste residue base adsorbent with every liter of waste water 2.6g joined in the lead waste water that plumbum ion concentration is 65mg/L; Regulate wastewater pH=6.5 with sodium hydroxide or hydrochloric acid; Controlled temperature is at 30 ℃; Stirring reaction is the filtering sorbent material after 4 hours, and the lead ion content of water outlet has dropped to 0.44mg/L, and plumbous clearance has reached 99.3%.
Instance 6
The dosage of instance 1 biological waste residue base adsorbent with every liter of waste water 3.0g joined in the lead waste water that plumbum ion concentration is 80mg/L; Regulate wastewater pH=6.5 with sodium hydroxide or hydrochloric acid; Controlled temperature is at 30 ℃; Stirring reaction is the filtering sorbent material after 5 hours, and the lead ion content of water outlet has dropped to 0.8mg/L, and plumbous clearance has reached 99%.

Claims (5)

1. method of utilizing biological waste residue base to handle lead waste water is characterized in that concrete grammar is:
(1) get the waste residue that biological-pharmacy produces, add the broomcorn straw of 1~1.5 times of quality, and respectively with the ratio adding caustic soda of 1~3g/kg, the ratio of 1~2g/kg adds organic ketone, the ratio of 0.5~1g/kg adds organic ester;
(2) stir, mixing, control dissolved oxygen 1.0~1.5mg/L, pH=7.5~9.5, temperature is at 65~75 ° of C, electromotive force-10~-20mV, the slaking 15~25 days of fully fermenting, high-temperature sterilization and pulverization process make biological waste residue base adsorbent;
(3) dosage with 2.0~3.0g/L joins biological waste residue base adsorbent in the lead waste water, and regulating wastewater pH is 5.5~7.5, and controlled temperature is at 25~30 ° of C, and stirring reaction is the filtering sorbent material after 1~6 hour, detects the lead ion content of water outlet.
2. a kind of method of utilizing biological waste residue base to handle lead waste water according to claim 1, it is characterized in that: described organic ketone is one or both in ortho-nitrophenyl ethyl ketone, ketopentamethylene, the butanone.
3. a kind of method of utilizing biological waste residue base to handle lead waste water according to claim 1, it is characterized in that: described organic ester is one or both in Nikithan, glycerine triacetate, Iso Butyl Acetate, ETHYLE ACETATE, the ethyl propionate.
4. a kind of method of utilizing biological waste residue base to handle lead waste water according to claim 1 is characterized in that: the plumbous best pH scope of said biological adsorption agent absorption is 5.5~7.5.
5. a kind of method of utilizing biological waste residue base to handle lead waste water according to claim 1, it is characterized in that: the plumbum ion concentration of said lead waste water is no more than 80mg/L.
CN2011103207575A 2011-10-20 2011-10-20 Method for treating lead-containing wastewater by utilizing biological waste residue base Pending CN102464376A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014012134A1 (en) * 2012-07-18 2014-01-23 University Of Technology, Sydney Biosorbent for heavy metal removal
CN105601052A (en) * 2016-03-17 2016-05-25 杭州启澄科技有限公司 Treatment method for removing lead in electroplating wastewater
CN105753249A (en) * 2016-03-17 2016-07-13 杭州启澄科技有限公司 Treatment system for removing lead from electroplating wastewater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005040685A (en) * 2003-07-25 2005-02-17 Sumitomo Osaka Cement Co Ltd Heavy metal adsorbent material and heavy metal treatment method
CN1657431A (en) * 2005-01-28 2005-08-24 湖南大学 Method of adsorbing lead-contained in industial wste water using mushroom culture medium waste material
CN1907558A (en) * 2006-07-14 2007-02-07 北京化工大学 Process for preparing bean skin biosorption

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005040685A (en) * 2003-07-25 2005-02-17 Sumitomo Osaka Cement Co Ltd Heavy metal adsorbent material and heavy metal treatment method
CN1657431A (en) * 2005-01-28 2005-08-24 湖南大学 Method of adsorbing lead-contained in industial wste water using mushroom culture medium waste material
CN1907558A (en) * 2006-07-14 2007-02-07 北京化工大学 Process for preparing bean skin biosorption

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014012134A1 (en) * 2012-07-18 2014-01-23 University Of Technology, Sydney Biosorbent for heavy metal removal
CN105601052A (en) * 2016-03-17 2016-05-25 杭州启澄科技有限公司 Treatment method for removing lead in electroplating wastewater
CN105753249A (en) * 2016-03-17 2016-07-13 杭州启澄科技有限公司 Treatment system for removing lead from electroplating wastewater

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