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Heavy metal ion adsorbent for livestock and poultry breeding wastewater, preparation method of heavy metal ion adsorbent and adsorption technology
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A technology for livestock and poultry breeding wastewater and livestock and poultry breeding, which is applied in the field of heavy metal adsorbents for livestock and poultry breeding wastewater and its preparation and adsorption technology, which can solve the problems of difficult and efficient removal and limited adsorption capacity, and achieve short adsorption cycle and low cost , the effect of a wide range of sources
Inactive Publication Date: 2016-04-20
山东永辰环境科技有限公司
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In addition, there are many studies on heavy metal adsorption materials, including activated carbon and modified silicate materials. Has a certain adsorption efficiency, but the adsorption capacity is limited, and it is difficult to achieve efficient removal
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Embodiment 1
[0017] Heavy metal adsorbent formula (100g): corn straw 32g, wheat straw 28g, poplar leaves 30g, β-cyclodextrin 10g.
[0018] Preparation method: ①Weigh 32g of corn stalks, 28g of wheat stalks, and 30g of poplar leaves, pulverize the mixture of the three components, and sieve with a 100-mesh sieve to obtain the mixture;
[0019] ② Add the mixture in step ① to 36g of absolute ethanol and disperse evenly, then add 10g of β-cyclodextrin and stir at high speed;
[0020] ③The mixture obtained in step ② is vacuum-dried to obtain a heavy metal adsorbent.
Embodiment 2
[0022] Heavy metal adsorbent formula (100g): corn straw 35g, wheat straw 25g, poplar leaves 27g, β-cyclodextrin 13g.
[0023] Preparation method: ①Weigh 35g of corn stalks, 25g of wheat stalks, and 27g of poplar leaves, pulverize the mixture of the three components, and sieve with a 100-mesh sieve to obtain the mixture;
[0024] ② Add the mixture in step ① to 40g of absolute ethanol and disperse evenly, then add 13g of β-cyclodextrin and stir at high speed;
[0025] ③The mixture obtained in step ② is vacuum-dried to obtain a heavy metal adsorbent.
Embodiment 3
[0027] Heavy metal adsorbent formula (100g): 40g corn straw, 24g wheat straw, 21g poplar leaves, 15g β-cyclodextrin.
[0028] Preparation method: ①Weigh 40g of corn stalks, 24g of wheat stalks, and 21g of poplar leaves, pulverize the mixture of the three components, and sieve with a 100-mesh sieve to obtain the mixture;
[0029] ② Add the mixture in step ① to 42.5g of absolute ethanol and disperse evenly, then add 15g of β-cyclodextrin and stir at high speed;
[0030] ③The mixture obtained in step ② is vacuum-dried to obtain a heavy metal adsorbent.
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Abstract
The invention provides a heavy metalion adsorbent for livestock and poultry breeding wastewater, a preparation method of the heavy metalion adsorbent and an adsorption technology, and belongs to the technical field of livestock and poultry breeding wastewater treatment. The adsorbent is prepared from, by weight, 32-40% of corn stalks, 23-28% of wheat stalks, 20-30% of poplar leaves and 10-15% of beta-cyclodextrin. The removal rate of the prepared adsorbent on copper, lead and zinc in livestock and poultry breeding wastewater reaches 80%, and the removal rate of the prepared adsorbent on arsenic in livestock and poultry breeding wastewater reaches 70%. According to the prepared heavy metalion adsorbent, the raw material source is wide, and the cost is low; the removal rate on copper, lead, zinc and arsenic in livestock and poultry breeding wastewater is high; meanwhile, the adsorption cycle is short, and market application prospects are broad.
Description
technical field [0001] The invention belongs to the technical field of livestock and poultry breeding wastewater treatment, and in particular relates to a heavy metal adsorbent for livestock and poultry breeding wastewater, a preparation method and an adsorption process thereof. Background technique [0002] With the rapid development of my country's intensive livestock and poultry breeding industry and the continuous expansion of business models, the problem of livestock and poultry breeding wastewater pollution has become increasingly prominent. Antibiotics (such as sulfonamides, macrolides, and tetracyclines) and heavy metals (copper, arsenic, zinc, lead, and nickel) contained in livestock and poultry wastewater are low-concentration but highly harmful pollutants, which pose a threat to human health. constitute a huge potential threat. [0003] At present, the chemical precipitation method is generally used to remove high-concentration heavy metals in industrial wastewat...
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