Chemical adsorbent for processing heavy metal waste water

A chemisorption, heavy metal technology

A chemisorption, heavy metal technology

CN109019741APending Publication Date: 2018-12-18OCHEMATE MATERIAL TECH CO LTD
10 Cites 5 Cited by

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: Containing arsenic, Zn 2+ 、Cr 6+ wastewater treatment

[0050] Get 10 parts of calcium oxide, 40 parts of polymerized ferric sulfate, 25 parts of sulfur-containing iron powder, 22 parts of sodium percarbonate, and 3 parts of polyacrylamide, mix uniformly and be mixed with chemical adsorbent 50g for heavy metal wastewater treatment; get waste water 10L, Wherein the concentration of arsenic is 10.160ppm, Zn 2+ The concentration is 2.173ppm, Cr 6+ Concentration is 3.082ppm, add 20g above-mentioned chemical adsorbents that are used for the treatment of heavy metal wastewater, stir and react for 10 minutes and then let it stand for 45 seconds. After it settles, take the supernatant for detection and analysis. The results are as shown in Table 1:

[0051] Heavy metal wastewater

[0052] Table 1

Embodiment 2

[0053] Embodiment 2: containing arsenic, Zn 2+ 、Cr 6+ wastewater treatment

[0054] Take 41.5 parts of 100-mesh modified attapulgite, 27 parts of polyferric sulfate, 1 part of sulfur-containing iron powder, 1 part of wheat grains, 6 parts of quaternary ammonium cationic modified starch, 4 parts of polyacrylamide, 12 parts of calcium oxide , 5 parts of sodium percarbonate, 2 parts of nano-titanium dioxide, 0.5 part of deacetylation degree are 50% water-soluble chitosan, mix homogeneously and be mixed with the chemical adsorbent 5g that is used for heavy metal wastewater treatment; Get waste water 5L, wherein arsenic concentration is 16.320ppm, Zn 2+ The concentration is 1.350ppm, Cr 6+ Concentration 5.160ppm, add 2.5g above-mentioned chemical adsorbents that are used for the treatment of heavy metal wastewater, stir and react for 30 minutes and then let it stand for 30 seconds. After it settles, take the supernatant for detection and analysis. The results are as shown in Tab...

Embodiment 3

[0057] Embodiment 3: containing arsenic, Zn 2+ 、Cr 6+ Wastewater treatment (heavy metal concentration <5ppm)

[0058] Take 40 parts of 100 mesh modified attapulgite, 27 parts of polyferric sulfate, 1 part of sulfur-containing iron powder, 1 part of wheat grains, 6 parts of quaternary ammonium cationic modified starch, 4 parts of polyacrylamide, 12 parts of calcium oxide , 5 parts of sodium percarbonate, 2 parts of nano-titanium dioxide, 2 parts of deacetylation degree are 50% water-soluble chitosan, mix homogeneously and be mixed with the chemical adsorbent 30g that is used for heavy metal wastewater treatment; Get waste water 5L, wherein arsenic concentration is 1.316ppm, Zn 2+ The concentration is 1.722ppm, Cr 6+ Concentration 1.585ppm, add 10g above-mentioned chemical adsorbents that are used for the treatment of heavy metal wastewater, stir and react for 20 minutes and then let it stand for 30 seconds. After it settles, take the supernatant for detection and analysis. T...

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Abstract

The invention provides a chemical adsorbent for processing heavy metal waste water. The Chemical adsorbent for processing heavy metal waste water comprises the following components in parts by mass: 5to 25 parts of calcium oxide, 15 to 40 parts of an inorganic polymer flocculant, 1 to 25 parts of sulfur-containing iron powder, 3 to 30 parts of sodium percarbonate, and 1 to 10 parts of an organicpolymer flocculant. The adsorbent of the invention is simple to use and operate, the conditions are easy to control, the dosage of the medicament is small, and the sedimentation speed is fast.

Description

technical field [0001] The invention relates to a chemical adsorbent for treating heavy metal wastewater and its application. Background technique [0002] In recent years, due to the rapid development of industry, the problem of water pollution has become one of the focal issues concerned by all walks of life. Various heavy metal ions contained in wastewater will cause irreversible damage to the human body through the enrichment of the food chain. Heavy metal wastewater mainly comes from mine drainage, leaching water from waste rock yards, tailings drainage from mineral processing plants, dust removal drainage from non-ferrous metal smelters, pickling water from non-ferrous metal processing plants, washing water from electroplating plants, pickling drainage from iron and steel plants, etc. The types, contents and forms of heavy metal ions in wastewater change with the change of production process conditions. [0003] The heavy metals in wastewater cannot be decomposed and...

Claims

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Application Information

Patent Timeline
18 Dec 2018
Publication
CN109019741A
IPC
C02F1/28; C02F1/52; C02F1/56; C02F1/72; C02F1/50; C02F101/20; C02F101/22
CPC
C02F1/281; C02F1/286; C02F1/50; C02F1/5245; C02F1/56; C02F1/722; C02F2101/103; C02F2101/20
Inventors
袁新兵; 唐利锋