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Waste incineration fly ash chelating agent



Product parameters / Product parameter

[ Technology and products] Brief       

                                

Heavy metal chelating agent has become a more commonly used heavy metal treatment agent. Twenty century Seventy In the 1980s, an insoluble xanthate polymer chelating agent was developed and used for heavy metal wastewater treatment. It can effectively remove heavy metal ions, precipitate quickly and filter easily. PH Fan round width Our country is also Seventy Xanthate polymer chelating agents have been studied and applied in the late 1990s and achieved good results. Get into Twenty-one In the 21st century, research and development of natural and non toxic natural chelating agents based on modern biotechnology has become a new direction of development.

Xinjiang Chelating agents have strong heavy metal chelating ability, which can be used at room temperature and wide. PH The reaction occurred within the range of values and was not affected by heavy metal content or complex. The product is a kind of environmental protection agent specially applied to stabilization of refuse incineration fly ash. The product was developed according to the composition and speciation of fly ash and the characteristics of heavy metals in fly ash. It is suitable for the domestic waste incineration technology characteristics, aiming at the current situation of high concentration of heavy metals in fly ash due to the separation and complex content of garbage. The product can be combined with the fly ash mixing stabilization process and system to make the treated fly ash meet the "domestic waste landfill pollution control standard". (GB16889-2008) Landfill requirements.  


[mechanism of action] mechanism


The polymeric active chelating groups can be used to rapidly capture heavy metals in fly ash, and to form insoluble heavy metal chelates and coprecipitation complexes by coordinating chelating, netting, bridging and compressing electric double layer.

The heavy metal chelating agent of fly ash has strong penetrability, uniform diffusion and fast first order reaction. It can quickly chelate heavy metals, and encapsulate the generated chelates in the lattice without re precipitating, effectively realizing passivation and stabilization.

Chelating agent chelating capacity, chelating speed and removal rate have been significantly improved compared with traditional products, thus fundamentally overcome the shortcomings of high residue rate and high use cost of traditional products.


  Two. Advantages of heavy metal chelating agents Advantage & Characteristics

[product characteristics]


Chelating agents, because of their scientific chelating principles and marine biotechnology, can truly achieve environmental friendliness in terms of microbiological extraction technology and compatibility. The product can not only affect human health but also pollute the environment two times when it is chelated with heavy metals. It is a natural green heavy metal chelating technology. According to a large number of practical applications at home and abroad, this product shows that its outstanding features are as follows:

One Natural. (pure nature)

The product is based on the highly chelating active ingredient of seaweed as a template, and is an environmentally friendly product.

Two Safe and harmless. (safe & harmless)

The product itself has stable physical and chemical properties, and has good toxicological and biological characteristics. Its toxicity is very low, and it has no irritation to the skin. It has good storage stability and operation safety. It is not dangerous goods. Most of them have no bad smell and do not decompose toxic substances. This product is a sulfur free polymer, so it will not cause two pollution to the environment.

Three High chelating efficiency. (efficient)

The product has strong chelating power and can react effectively with heavy metals to form insoluble substances. It can adsorb almost all heavy metals. Especially in fly ash treatment, it can chelate all residual heavy metals by simple treatment. Compared with traditional methods, it has high chelating efficiency and good effect.

Four It has quick effect and long duration. (instant effect & long effectiveness)

The product is effective and effective. 1~3 Minutes can be effective and take a long time.

Five High concentration, low freight. (high condensed & low freightage)

The product is highly concentrated by nanofiltration membrane. The finished product is not diluted. Users can dilute themselves according to the heavy metal content. High concentration liquid can reduce transportation cost and extend shelf life.

Six Comprehensive operation cost is low. (low-cost)

The dosage of this product is very small, only the weight of fly ash. 0.1~3% The expansion capacity is very small, which hardly affects the landfill volume of treated fly ash, and the operation cost is low, economical and practical.

Seven Stability. (stable)

The product forms a stable polymer with heavy metal ions, and does not precipitate heavy metal ions in strong acid and strong alkaline environment. -100 Degree to Four hundred The heavy metal chelates in the temperature range are also very stable. Under natural conditions, the polymer stability can be maintained for hundreds of years.

Eight Sensitivity. (sensitive)

This product is very effective for trace metal ions in waste fly ash or water, and can reduce the content of toxic metal ions in waste water to zero.

Nine Multifunction. (multifunctional)

The product can produce stable chelates and remove heavy metal ions. At the same time, it can also promote the passivation and stabilization of organic pollutants such as dioxins, and can also be used to recover heavy metals. It has good environmental effects and economic benefits.

Ten A wide range of accommodation. (broad-spectrum)

The product has wide spectrum and is widely used in many fields. This chelating agent can not only treat incineration fly ash, but also treat soil, sludge, industrial waste water, slag and so on.

Eleven Environmental friendliness (environmentally friendly)

It has good storage stability and operational safety. It does not belong to dangerous goods. Most of them have no bad smell and do not decompose toxic substances. No toxic by-products will be generated after the molecular reaction. It will not cause two pollution and environmental friendliness.


[performance indicators]


Table 1 Xinjiang Typical technical indicators and parameters of heavy metal chelating agents

Serial number

Index sign

Typical technical parameters

Preparation

One

Appearance

Liquid: yellow liquid.

Solid: white crystal

 

Two

density (g/cm Three )

1.10~1.20

Twenty-five Temperature

Three

Insoluble matter, %

Less than 0.2

 

Four

PH value

8~9

1% aqueous solution

Five

Chelating capacity (mmol Cu/g)

More than 1.9

 

Six

Flammability / Volatility

Non inflammable / Nonvolatile

 

Seven

smell

No ( 10cm )

 

 

It has good water solubility and dispersity, high utilization rate of medicament and stable distribution of fly ash treatment performance.

According to the specific waste incineration technology and heavy metal content, proper deployment can be made.

It can further increase stability and strength by combining a small amount of inorganic materials such as cement.

After treatment, the fly ash has stable performance and long cycle, and can meet the sanitary landfill standard.

[comparative advantage]


Table 2 Xinjiang Comparative analysis of heavy metal chelating agents and traditional products

Serial number

Index sign

Xinjiang product

Traditional products

Preparation

One

Dosage added

0.5~3%

2~3%

No cement

Two

Capacity increase

1~2%

3%

 

Three

Leaching property

Low

Sometimes high

 

Four

Production technology

Bionic chemical source

chemical synthesis

 

Five

Main ingredients

Biomimetic molecules

Artificial synthesis

Chemical substances

 

Six

toxicity

No

Potential risks

 

Seven

Utilization ratio

Very high

higher

 

Eight

Environmental protection

Environment friendly

Environmental risk

 

Nine

Multi-function

Heavy metals POPs   etc.

heavy metal

 

Ten

Use cost

Lower

High

 

 

It can be used in different temperature environments, and can achieve effective response in a wide pH range.
The chelating effect of heavy metal is strong, and the reaction time is short, and the removal effect is good.
Low cost, convenient operation, environmental protection, safety and innocuity.
The efficiency of the product is high compared with the well-known products at home and abroad.
A wide range of applications can meet heavy metal content in different fly ashes.

It can be either without cement or with less cement.


Three. Applicable fields Applicable Domain


Xinjiang Heavy metal chelating agent has become a more mature heavy metal treatment technology since its development and utilization. Because of its simple operation, good treatment effect and low treatment cost, it has been widely used in the stabilization of incineration fly ash, and has been widely applied in electroplating, electronic, circuit board and other industries, especially for heavy metals. The main application areas of high and complex components include:

One Garbage power plant

It has unique effect in heavy metal treatment of fly ash in MSW incineration power plant, and is suitable for stabilization of heavy metal chelate in fly ash of MSW incineration power plant.

Two Solid waste disposal field

Heavy metal solid waste treatment systems, river sludge, municipal sludge, industrial sludge containing heavy metals, stabilization of slag and other fields, as well as remediation of heavy metal contaminated soil.

Three Wastewater treatment field

Heavy metal wastewater treatment,   Heavy metal ions capture from wastewater, such as mines, electroplating, electronics, circuit boards and other industries.

Four Radioactive waste water

Metal ions capture for nuclear power plant reactor, uranium thorium hydrometallurgical plant, hospital, isotope test reactor and production reactor.


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Copyright 2019: Lianyungang Xinjiang Environmental Protection Material Co., Ltd. Record No.: Su ICP, No. 13042744 -1.