Heavy metals in wastewater - ecoprofi.info
- Classification:Chemical Auxiliary Agent
- CAS No.:9003-05-8, 9003-05-8
- Other Names:PAM
- MF:(C3H5NO)n, (C3H5NO)n
- EINECS No.:201-173-7, 201-173-7
- Purity:90%
- Type:Water Treatment agency
- Usage:Petroleum Additives, Textile Auxiliary Agents, Water Treatment Chemicals
- Product Name:Polyacrylamide PAM Flocculant Coagulant for Wastewater
- Material:Water Treatment Polymer
- Application:Oil Field Profile Control Plugging Agent PAM
- Appearance:White Powder
- Daily Capacity:180tons
- Package:25kg/bag
HEAVY METALS IN WASTEWATER REMOVAL OF HEAVY METALS 1/3 •Chemical precipitation •Hydroxide precipitation NaOH or Ca (OH) 2, pH 8 - 11 •Addition of coagulants possible • + 99 % removal possible • - Requires high concentration, produces sludge, some metal hydroxides are amphoteric, inhibition by complexing agents
The intent of this paper is to provide general information to assist in understanding chemical treatment systems commonly used to remove heavy metals from wastewater by hydroxide precipitation. Heavy metals include; cadmium, chromium, copper, lead, mercury, nickel, silver and Zinc.
Removal of Heavy Metals from Industrial Wastewaters: A Review
- Classification:Chemical Auxiliary Agent
- CAS No.:9003-05-8
- Other Names:Flocculant
- MF:(C3H5NO)n
- EINECS No.:231-673-0
- Purity:≥90%
- Type:Polyacrylamide, Polyacrylamide
- Usage:Water Treatment Chemicals
- Model Number:PAM- Anionic
- Form:Powder or Granule
- Color:White
- Molecular weight:23-33 million
- Effective PH Value:5-14
- Solid Content:≥90%
- Degree of Hydrolysis:35-45 %
- Residual monomer content:≤0.05%
- Dissolution time:≤40 minutes
Heavy metals like arsenic, copper, cadmium, chromium, nickel, zinc, lead, and mercury are major pollutants of fresh water reservoirs because of their toxic, non-biodegradable, and persistent nature.
Heavy metal concentrations from industrial wastewater pollution such as zinc, copper, nickel and chrome, has sparked major environmental compliance initiatives. For this purpose, government agencies established industry compliance standards for metal-contaminated wastewater discharge into municipal sewage treatment plants, and hazardous metal waste solids into landfills.
New trends in removing heavy metals from industrial
- Classification:Chemical Auxiliary Agent
- CAS No.:9003-05-8
- Other Names:PAM
- MF:(C3H5NO)n
- Purity:88%
- Type:Polyacrylamide PAM
- Usage:Water Treatment Chemicals
- Appearance:White Granule Powder
- Type:Water Treatment Chemical Polyacrylamide PAM
- Color:White
- Molecular Weight(million):19-23
- Solid Content(%):≥88
- Solution Time(min):≤40
- Residual Monomer(%):≤0.05
- Effective PH Value:5-14
- Degree of Hydrolysis(%):19-23
The conventional processes for removing heavy metals from wastewater include many processes such as chemical precipitation, flotation, adsorption, ion exchange, and electrochemical deposition. Chemical precipitation is the most widely used for heavy metal removal from inorganic effluent.
Remediation. In humans, heavy metal poisoning is generally treated by the administration of chelating agents. These are chemical compounds, such as CaNa2 EDTA (calcium disodium ethylenediaminetetraacetate) that convert heavy metals to chemically inert forms that can be excreted without further interaction with the body.
1,3,5-Triazine-2,4,6-trithiol trisodium salt | 17766-26-6
- Classification:Chemical Auxiliary Agent
- CAS No.:9003-05-8
- Other Names:PAM
- MF:(C3H5NO)n
- EINECS No.:201-173-7
- Purity:99%
- Type:Adsorbent, Polyacrylamide PAM
- Adsorbent Variety:Molecular Sieve
- Usage:Paper Chemicals, Textile Auxiliary Agents, Water Treatment Chemicals
- Appearance:White Granule Powder
- Solid Content(%):≥90
- Insoluble Matter(%):≤0.2
- Molecular Weight(million):8-12
- Degree of Hydrolysis(%):0-3
- Residual Monomer(%):≤0.5
- Effective PH Value:1-8
- Grade:Top Grade
Application: 1,3,5-Triazine-2,4,6-trithiol trisodium salt (CAS: 17766-26-6) is heavy metal precipitator in waster water treatment. Can be used to precipitate/remove heavy metals such as Pb, Hg, Ag, Cd and Cu from waste water. Especially when the waste water contains heavy metal complexes which can not be eliminated as hydroxides.
Remove heavy metals from wastewater over a wide pH range Use chemical solutions for soluble and/or particulate heavy metals, such as lead, copper, chromium, iron, manganese, mercury, nickel and zinc Remove selenium with advanced biological treatment
Removing Heavey Metals From Wastewater - wilsonemi.com
- Classification:Chemical Auxiliary Agent
- CAS No.:1327-41-9
- Other Names:PAC
- MF:[AL2(OH)nCL6-n]m
- EINECS No.:1327-41-9
- Purity:99%min
- Type:Polyaluminium Chloride (PAC)30% With Lowest Price
- Usage:Water Treatment Chemicals
- Model Number:Industrial Grade
- Product name:poly aluminium chloride(pac)30% with lowest price
- Al2O3 %≥:29.0
- Density (20C)/(g/cm3) ≥:1.12
- Basicity %:40 -90
- Water insoluble% ≤:0.6
- PH value (10g/L water solution):3.5 ~ 5.0
- Pb% ≤:0.001
- As % ≤:0.0002
- Cd% ≤:0.0002
- Grade:Top Grade
The intent of this paper is to provide general information to assist in understanding chemical treatment systems commonly used to remove heavy metals from wastewater by hydroxide precipitation. Heavy metals include; cadmium, chromium, copper, lead, mercury, nickel, silver and Zinc.
Heavy metals can enter a water supply by industrial and consumer waste, or even from acidic rain breaking down soils and releasing heavy metals into streams, lakes, rivers, and groundwater. Environmental and health risks. Now we are going to describe the effects of the heavy metals in the environment.
TMT 15 (Water treatment Chemical) - tradekey.com
- Classification:Chemical Auxiliary Agent
- CAS No.:9003-05-8
- Other Names:Flocculant
- MF:(C3H5NO)n
- Purity:88%
- Type:Polyacrylamide, Polyacrylamide
- Usage:Water Treatment Chemicals
- Model Number:PAM- Anionic
- Color:White
- Form:Powder or Granule
- Molecular weight:19-21 million
- PH value:5-14
- Degree of Hydrolysis:20-30%
- Solid Content:≥88%
- Residual monomer content:≤0.05%
- Dissolution time:≤40 minutes
- Grade:Top Grade
Is a kind of effective removal of heavy metals from waste water, environmentally friendly, non-toxic heavy metal removal agent . TMT can be rapid recation with all kinds of heavy metal ions(Hg 、 Pb 、 Cu 、 Cd 、 Ni 、 Mn 、 Z n 、 Cr) in wastewater at normal temperature. Generate insoluble chelates, and has good chemical stability, In order to achieve the purpose of removing heavy metal.
The particles can then be aggregated by chemical coagulation and removed by filtration or sedimentation. Chemical precipitation is the most common method for removing dissolved heavy metals from wastewater. It is also among the least expensive technologies and is always combined with chemical coagulation for heavy metal wastewater treatment.
Removing Heavy Metals From Wastewater
- Classification:Chemical Auxiliary Agent
- CAS No.:9003-05-8
- Other Names:Flocculant
- MF:(C3H5NO)n
- Purity:88%
- Type:Coal Ash Powder Kneading Agent, Water Treatment Chemical Polyacrylamide Beads
- Usage:Water Treatment Chemicals
- Model Number:PAM- Anionic
- Color:White
- Effective PH Value:5-14
- Form:Powder or Granule
- Molecular Weight:16-20 Million
- Solid Content:≥88%
- Degree of Hydrolysis:7-18 %
- Residual Monomer Content:≤0.05%
- Dissolution Time:≤40 minutes
- Grade:Top Grade
Metal precipitation is primarily dependent upon two factors: the concentration of the metal, and the pH of the water. Heavy metals are usually present in wastewaters in dilute quantities (1 - 100 mg/L) and at neutral or acidic pH values (< 7.0). Both of these factors are disadvantageous with regard to metals removal.
Enhanced Removal of Heavy Metals in Primary Treatment Using Coagulation and Flocculation Pauline D. Johnson1*, Padmanabhan Girinathannair2, Kurt N. Ohlinger3, Stephen Ritchie4, Leah Teuber1, Jason Kirby5 ABSTRACT: The goal of this study was to determine the removal effi-ciencies of chromium, copper, lead, nickel, and zinc from raw wastewater
- What is coal based activated carbon?
- Coal based activated carbon is available in four different types of base material - bituminous, sub bituminous, anthracite, & lignite, consisting of micro, meso and macro pore structures. This unique pore distribution makes coal based activated carbon ideal to remove small to large molecular structures.
- Which raw material is used in the production of activated carbons?
- The primary raw material used in the production of our activated carbons is bituminous coal that is crushed, sized and processed in low temperature bakers followed by high-temperature activation furnaces. Activation develops the pore structure of the carbon.
- What is granular activated carbon used for?
- Today, activated carbon in various forms, including granular, is used in a wide range of industrial, commercial, and home applications to remove contaminants. The absorptive capacity of GAC makes it ideal for removing a variety of contaminants from water, air, liquids, and gases.
- Who makes granular activated carbon (GAC)?
- Calgon Carbon created the first granular activated carbon (GAC) from bituminous coal in the 1940s and has staked a position of global industry leadership ever since.