CN109894092A - A kind of method of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater - Google Patents

A kind of method of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater Download PDF

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Publication number
CN109894092A
CN109894092A CN201711297496.3A CN201711297496A CN109894092A CN 109894092 A CN109894092 A CN 109894092A CN 201711297496 A CN201711297496 A CN 201711297496A CN 109894092 A CN109894092 A CN 109894092A
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CN
China
Prior art keywords
biogas residue
base adsorbent
biogas
industrial wastewater
powder
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711297496.3A
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Chinese (zh)
Inventor
仲鹏鹏
于鹏
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China Science And Technology Co Create Environmental Technology Jiangsu Co Ltd
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China Science And Technology Co Create Environmental Technology Jiangsu Co Ltd
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Priority to CN201711297496.3A priority Critical patent/CN109894092A/en
Publication of CN109894092A publication Critical patent/CN109894092A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a kind of biogas residue base adsorbent and the methods for removing heavy metals in industrial wastewater, anaerobic fermentation > 60 days or more biogas slurries are pressed dry to water content and obtain biogas residue for 75~90%, the dry biogas residue of pressure crushes, and obtains the biogas residue powder that partial size is 0.5mm-0.8mm;The biogas residue powder of crushing is immersed in sodium hydroxide solution, is stirred evenly, is impregnated 24-36 hours, is filtered, washing removes remaining sodium hydroxide, and biogas residue base adsorbent is made in powder drying.The treatment of wastes with processes of wastes against one another of the present invention carries out Adsorption and recycling to the heavy metal in waste water using biogas residue, and cost for wastewater treatment is low, high-efficient, and recycles the biogas residue after heavy metal and can be recycled, and takes full advantage of useful resources, has major application prospect.

Description

A kind of method of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater
Technical field
The present invention relates to a kind of methods of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater.
Background technique
Heavy metal is a kind of toxic element that can be accumulated in vivo, with the development of industry, heavy metal pollution by Pay attention to extensively, heavy metal can be accumulated and be enriched in biological chain after entering environment, and life and health is seriously endangered.Weight in water at present The place to go method of metal mainly has chemical precipitation method, electrolysis method, ion-exchange, membrane separation process and absorption method, wherein absorption method Since it has many advantages, such as not generate secondary pollution, renewable recycling, and have attracted much attention.Currently, most common adsorbent has work Property charcoal and modified cellulose etc., but adsorbent because at high cost or production technology is complicated limits its application mostly.
Summary of the invention
The present invention provides a kind of biogas residue base adsorbents.
To solve the above-mentioned problems, the technical scheme adopted by the invention is that such, a kind of biogas residue base adsorbent will be detested Aerobe fermentation > 60 days or more biogas slurries press dry to water content and obtain biogas residue for 75~90%, and the dry biogas residue of pressure is crushed, obtained Partial size is the biogas residue powder of 0.5mm-0.8mm;The biogas residue powder of crushing is immersed in sodium hydroxide solution, is stirred evenly, is impregnated It 24-36 hours, filters, washing removes remaining sodium hydroxide, and biogas residue base adsorbent is made in powder drying.
Preferably, the concentration of the sodium hydroxide solution is 1-5mol/L.
The present invention also provides a kind of methods using above-mentioned biogas residue base adsorbent Adsorption heavy metal in waste water, by natural pond Slag base adsorbent is put into waste water, is filled 10~20 hours heavy metals made in industrial wastewater of air stirring and is fully absorbed, work Discharge after industry wastewater recycle content of beary metal is up to standard.
It is recycled to further realize, recycling is adsorbed with the biogas residue base adsorbent of heavy metal after filters pressing, is added extremely In nitric acid solution, stirring (or oscillation) uniformly, is impregnated 30 minutes, filters pressing again, regeneration is completed in washing, drying.
The concentration of nitric acid solution is preferably 1-5mol/L
The utility model has the advantages that the treatment of wastes with processes of wastes against one another of the present invention, Adsorption and recycling carried out to the heavy metal in waste water using biogas residue, at waste water Manage at low cost, high-efficient, and the biogas residue recycled after heavy metal is can be recycled, takes full advantage of useful resources, has great answer Use prospect.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the examples below, the embodiment For explaining only the invention, it is not intended to limit the scope of the present invention..
Embodiment
The biogas slurry of certain pig farm is pressed dry to obtain biogas residue sludge with plate and frame filter press, and measuring its water content is 79wt%, is taken The biogas residue pressed dry crushes, and obtains the biogas residue powder that partial size is 0.5mm-0.8mm;It is molten that the biogas residue powder of crushing is immersed in sodium hydroxide It in liquid, stirs evenly, impregnates 24-36 hours, filter, washing removes remaining sodium hydroxide, and the suction of biogas residue base is made in powder drying Attached dose.
The lead standard solution 1L of 0.1g/L is prepared, pH value is adjusted to be greater than 3, this adsorbent investment lead standard solution In conditioning tank, through 18 hours Aerated stirrings, the content of heavy metal in waste water is detected at any time, when heavy metal in lead standard solution Content less than 0. 01g/L when, and the lead standard solution more renewed, the heavy metal in Adsorption of Lead standard solution again, directly Until adsorption saturation, plate and frame filter press filters pressing is soaked in 2mol/L nitric acid solution, stirs evenly, and impregnates 24 hours, pressure Filter, after washing, regeneration is completed in powder drying
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (5)

1. a kind of biogas residue base adsorbent, which is characterized in that pressing dry anaerobic fermentation > 60 days or more biogas slurries to water content is 75 ~90% obtains biogas residue, and the dry biogas residue of pressure crushes, and obtains the biogas residue powder that partial size is 0.5mm-0.8mm;By the biogas residue powder of crushing It is immersed in sodium hydroxide solution, stirs evenly, impregnate 24-36 hours, filter, washing removes remaining sodium hydroxide, and powder dries It is dry that biogas residue base adsorbent is made.
2. a kind of biogas residue base adsorbent according to claim 1, which is characterized in that the concentration of sodium hydroxide solution is 1- 5mol/L。
3. a kind of method using the as claimed in claim 1 or 22 biogas residue base adsorbent Adsorption heavy metals in industrial wastewater, It is characterized in that, biogas residue base adsorbent is put into industrial wastewater, 10~20 hours weights made in industrial wastewater of air stirring are filled Metal is fully absorbed, and industrial wastewater detects content of beary metal rear discharge up to standard.
4. method according to claim 3, which is characterized in that recycling is adsorbed with the biogas residue base adsorbent of heavy metal through pressing It after filter, is added into nitric acid solution, stirs evenly, impregnate 30 minutes, filters pressing again, regeneration is completed in washing, drying.
5. method according to claim 4, which is characterized in that the concentration of nitric acid solution is 1-5mol/L.
CN201711297496.3A 2017-12-08 2017-12-08 A kind of method of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater Pending CN109894092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711297496.3A CN109894092A (en) 2017-12-08 2017-12-08 A kind of method of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711297496.3A CN109894092A (en) 2017-12-08 2017-12-08 A kind of method of biogas residue base adsorbent and Adsorption heavy metals in industrial wastewater

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CN109894092A true CN109894092A (en) 2019-06-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110773563A (en) * 2019-11-27 2020-02-11 广西壮族自治区农业科学院 Method for repairing cadmium-zinc polluted soil by using grass dragon
CN111253944A (en) * 2020-03-28 2020-06-09 河南恒天久大实业有限公司 Method for preparing soil heavy metal passivator from biogas residues

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110773563A (en) * 2019-11-27 2020-02-11 广西壮族自治区农业科学院 Method for repairing cadmium-zinc polluted soil by using grass dragon
CN110773563B (en) * 2019-11-27 2021-08-27 广西壮族自治区农业科学院 Method for repairing cadmium-zinc polluted soil by using grass dragon
CN111253944A (en) * 2020-03-28 2020-06-09 河南恒天久大实业有限公司 Method for preparing soil heavy metal passivator from biogas residues

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Application publication date: 20190618