EXN-904 Heavy metal capturing agent for desulfurization wastewater

Properties and uses

EXN-904 is an organic sulfur heavy metal removal agent developed for desulfurization system wastewater; EXN-904 can be used at room temperature with Cu2+, Mn2+, Ni2+, Pb2+, Cd2+, Ag+, Zn2+, Cr3+, Hg2+, etc. in wastewater A variety of heavy metal ions react quickly to form a water-insoluble chelate salt, and then add to the wastewater system by adding a coagulant (such as polyaluminum ferric sulfate, polyaluminum chloride, etc.), flocculant (such as anionic polyacrylamide) to accelerate Deposition to achieve the removal of heavy metal ions and all industries with heavy metal pollution can be treated with heavy metal removal agent EXN-904, such as electroplating, electronics, petrochemicals, metal processing, waste incineration treatment, power plant flue gas scrubbing and other wastewater systems.

According to the research and practice results, EXN-904 has three obvious advantages: 1) low toxicity; 2) the removal effect of heavy metal ions is very good, can remove all heavy metals in metal ions and complexes and chelates, in a wide range of Can be used directly in the PH range. 3) The formation of insoluble macromolecular three-dimensional chelates, under the condition of high temperature or strong water flow, the sulfidation reaction is still complete, the nature of the precipitated product is stable and easy to settle.

Usage

The specific use of pharmaceuticals should be determined according to the results of the wastewater pilot test.

The pH of the water should be greater than 2, and it is recommended to adjust in PH 6-9;

EXN-904 can be added directly or diluted;

The general dosage is 10-100ppm, the specific usage is determined by experiment according to the water quality; the reaction time is generally about 30min;

Adding inorganic coagulant (such as polyferric sulfate, polyaluminum chloride) about 0.05kg-0.2kg/m3 wastewater (which can also be omitted according to the situation), the reaction time is about 2min-5min;

Add 0.1% of anionic polyacrylamide (molecular weight of about 8 million) 1.0ml/L wastewater, quickly stir for 2 min (industrial product dosage 0.0005kg-0.002kg/m3 wastewater), reaction time is about 2min-5min, static Settling

Evaluate the effluent water quality and determine the appropriate dosage.

Package and Storage

Normally In 25kg net Plastic Drum, IBC drum can also be used as required.Storage for 12 months in room shady and dry place.

Safety Protection

Weak alkaline,Avoid contact with eye and skin, once contacted, flush with water.

Application

The interaction mechanism between heavy metal chelating agents and heavy metals is as follows: heavy metal chelating agents react with dissolved heavy metal ions to form insoluble heavy metal compounds, which are then removed from wastewater via sedimentation and flotation (e.g., dissolved air flotation). Currently employed agents include: alkaline substances, sulfiding agents, polymeric heavy metal chelators, surfactants, adsorbents, and bioflocculants.