Zhejiang Nanhua Electronic Technology Co., Ltd , https://www.nhloadcells.com
Weifang Puyinworun Environmental Protection Technology Co., Ltd. is a professional manufacturer of iron-carbon fillers for micro-electrolytic fillers with the largest scale and sales volume in China. The company's fillers are jointly developed with Sun Yat-sen University. After 1050 degrees high temperature sintering, it forms a structural alloy structure, which is effective. The high concentration of organic matter in the wastewater is removed, the cod of the wastewater is reduced, the biodegradability of the sewage is improved, the color is removed, and the broken chain is broken; the product material is iron, carbon, activator and metal catalytic element, which solves the problem of traditional packing and passivation of the filler. Forming its own unique product advantages: no binding, no passivation, no replacement, high strength and low loss (annual loss less than 15%).
[Printing and dyeing wastewater - iron carbon micro-electrolysis application]
In recent years, iron carbon microelectrolysis research results and technology patents have been successfully applied to wastewater treatment projects of printing and dyeing enterprises of various scales. The treatment of printing and dyeing wastewater by iron-carbon micro-electrolysis technology can effectively improve the biodegradability of wastewater, and the decolorization rate can reach almost 100%. The iron-carbon micro-electrolysis technology uses iron and carbon to generate electricity by itself, without external current, so it is easy to operate. , running costs are low.
Weifang Puyinworun Environmental Protection Technology Co., Ltd. Advantages of iron carbon microelectrolysis filler:
(1) It can handle a variety of poisons at the same time, with small footprint, simple system structure, easy to finalize the whole device and industrialization of equipment manufacturing;
(2) Wide application range, applied in wastewater treatment in many industries, such as printing and dyeing wastewater, electroplating wastewater, petrochemical wastewater, etc., have achieved good results;
(3) The treatment effect is good. From the actual operation of each plant, the removal effect of the various poisons is ideal.
(4) Long service life, convenient operation and maintenance, as long as the micro-electrolysis tower (bed) is regularly added with filler.
ã€Paper Wastewater-Iron Carbon Microelectrolysis Application】
The principle of water quality in papermaking wastewater: The color of papermaking wastewater is heavy, the pollutants are many, the current effect of micro-electrolysis, the magnetic field effect and redox effect can convert long-chain fiber polysaccharides in wastewater into disaccharides or even monosaccharides. It greatly improves its biodegradability and is converted into easily degradable substances, which can be completely removed with Fenton.
[Chromium-containing wastewater - micro-electrolysis application]
Most of the chromium-containing wastewater treatment in the project is to reduce hexavalent chromium to trivalent chromium and then remove it by precipitation. The treatment process generally comprises first adjusting the pH of the wastewater to 2-3 in the first reaction tank, and then upgrading into the micro-electrolysis reaction tank, and adjusting the pH value to 8-9 with NaOH or Ca(OH)2 in the next reaction tank. The Cr(OH)3 precipitate is formed, and a coagulant is added to precipitate Cr(OH)3. In view of the low efficiency and high treatment cost of purifying chromium-containing electroplating wastewater by single biological method, Weifang Puyinworun Environmental Protection Technology Co., Ltd. uses a new micro-electrolysis process to treat chromium-containing wastewater. During the experiment, heavy metal ions pass micro-electrolysis. The method removes more than 90%, and the experimental results also show that the treatment method is not only efficient, but also low in cost and has no secondary pollution.
Principle analysis of treatment of chromium-containing wastewater by micro-electrolysis: The electroplating wastewater treatment adopts micro-electrolysis treatment technology, which mainly uses the micro-electrolytic filler to purify wastewater. When the wastewater is in contact with the filler, electrochemical reaction, chemical reaction and physical action occur, including The combination of catalysis, oxidation, reduction, displacement, co-precipitation, flocculation, adsorption, etc., removes various metal ions in the wastewater to purify the wastewater.
[Arsenic-containing wastewater - internal electrolysis application]
Arsenic is a highly toxic substance that is highly polluting to the environment. Arsenic-containing wastewater is currently treated by ion exchange, precipitation and flotation. Lu Yuying et al. systematically summarized the treatment of arsenic-containing wastewater. In the above method, the amount of the precipitating agent added by the precipitation method is difficult to control, too little to eliminate arsenic, and too much may cause secondary pollution. The flotation rule is also easy to cause secondary pollution due to the large water content in the sludge. Nazarora GN et al. reported an electrocoagulation method that consumes Fe electrodes to treat arsenic-containing wastewater, but this method consumes a large amount of electricity. The research on the treatment of arsenic-containing wastewater by micro-electrolysis shows that the Fe2+ generated by the corrosion of the electrode of the battery can be removed by flocculation co-precipitation under alkaline conditions, and the removal rate can reach over 93%. And the new micro-electrolytic filler, get rid of the problems such as the knot, low loss, high efficiency! Micro-electrolytic fillers efficiently treat various organic wastewaters.
[Petrochemical Wastewater - Iron Carbon Filler Application]
Wastewater Overview: The basic characteristics of chemical wastewater are extremely high COD, high salinity, and toxicity to microorganisms. It is a typical refractory wastewater, and it is the research focus and hotspot of water treatment technology. The characteristics of chemical wastewater are as follows:
(1) The water quality component is complex, the by-products are many, and the reaction raw materials are often solvent-based substances or cyclic structure compounds, which increases the difficulty of treating wastewater;
(2) The high content of pollutants in the wastewater is caused by incomplete reaction of the raw materials and the entry of a large amount of solvent medium used in the raw materials or production into the wastewater system;
(3) There are many toxic and harmful substances. Many organic pollutants in fine chemical wastewater are toxic and harmful to microorganisms, such as halogen compounds, nitro compounds, dispersing agents with bactericidal action or surfactants;
(4) There are many biodegradable substances, B is lower than C, and biodegradability is poor;
(5) The color of the wastewater is high.
Petrochemical wastewater treatment method: Wastewater treatment technology has been developed for more than 100 years. The types of pollutants and sewage in sewage are increasing with the development of social economy and living standards. The sewage treatment technology is also accompanied by science and technology. The development has changed with each passing day. At the same time, the old sewage treatment technology has been continuously innovated and developed. Especially in the current chemical wastewater, the pollutants are various, and often one process cannot remove all the pollutants in the wastewater. It is very difficult to treat chemical wastewater to discharge standards by physical and chemical process, and the operation cost is high. Chemical wastewater contains more refractory organic matter, poor biodegradability, and the wastewater water quality of chemical wastewater changes greatly, so it is directly treated by biochemical methods. The effect of chemical wastewater is not very satisfactory. In view of this characteristic of chemical wastewater treatment, we believe that it is advisable to adopt appropriate pretreatment methods according to the actual wastewater quality, such as new iron-carbon micro-electrolytic fillers, to destroy the refractory organic matter in wastewater and improve the biodegradability of wastewater; Combined with biochemical methods, such as SBR, contact oxidation process, A/O process, etc., the chemical wastewater is treated in depth.
[Electroplating wastewater - micro-electrolysis application]
Waste water and waste liquid discharged from electroplating factories (or workshops), such as plating parts rinsing water, waste tank liquid, equipment cooling water and flushing surface water, etc. The water quality varies depending on the production process, some contain chromium, some contain nickel or Contains cadmium, cyanide, acid, alkali and so on. Some of the metal ions in the wastewater exist in a simple cationic form (such as Ni2+, Cu2+, etc.), some exist as acid anions, and some exist as complex complex anions. A kind of waste water often contains more than one harmful component, such as cyanide and cadmium in wastewater. In addition, the plating solution usually contains organic additives. The main source of zinc in electroplating and metalworking wastewater is electroplated or pickled tow. The contaminants are transferred to the rinse water by a metal rinse process. The pickling process involves first immersing the metal (zinc or copper) in a strong acid to remove oxides from the surface, followed by immersion in a brightener containing strong chromic acid for brightness enhancement. The wastewater contains a large amount of heavy metal ions such as hydrochloric acid and zinc, copper and organic brighteners, etc., which are highly toxic, and some contain highly toxic substances that are carcinogenic, teratogenic and mutagenic, which are extremely harmful to humans. Therefore, the electroplating wastewater must be carefully recycled to eliminate or reduce its environmental pollution. Electroplating wastewater treatment equipment consists of adjustment tank, dosing tank, reduction tank, neutralization reaction tank, pH adjustment tank, flocculation tank, inclined tube sedimentation tank, chamber filter press, clear water tank, air flotation reaction, activated carbon filter, etc. .
The electroplating wastewater treatment adopts the iron-carbon micro-electrolysis treatment process. The technology mainly utilizes the new iron-carbon micro-electrolytic filler to purify the wastewater. When the wastewater is in contact with the filler, electrochemical reaction, chemical reaction and physical action occur, including catalysis, oxidation and reduction. The combination of replacement, co-precipitation, flocculation, adsorption, etc. removes various metal ions in the wastewater to purify the wastewater.
[Fumaric acid wastewater - micro-electrolysis application]
Fumaric acid is widely used in the manufacture of unsaturated polyester resins and in the food industry. The wastewater produced in the production process has low PH value, high COD, and contains a large amount of thiourea, and the wastewater is poor in biodegradability, so it is one of the currently difficult to treat wastewater. Such wastewater generally needs to be pretreated to improve its biodegradability and further processing. Pretreatment of thiourea and Fe2*-rich fumaric acid wastewater by iron-carbon microelectrolysis, the new ecological Fe2* and all of its own Fe2* produced during micro-electrolysis, under the action of electrochemistry, thiourea and Other organic pollutants.
Pretreatment of fumaric acid organic wastewater by iron-carbon microelectrolysis, the reaction time was 3 hours, the COD removal rate was 35.41%, the thiourea removal rate was 95.88%, and the B/C was increased from 0.098 to 0.36. The biochemical property is greatly improved, and the organic conformity of subsequent biochemical treatment is reduced.
[PCB Wastewater - Microelectrolysis Application]
The circuit board (PCB) industry is an important basic industry that is urgently needed in China's informatization process. While contributing to the country's social and economic development, if it is not properly managed, it will bring serious environmental pollution to the local area.
There are many production processes for circuit boards (PCBs), such as grinding plate, weak corrosion, acid etching, alkaline etching, electroplating, chemical cleaning, development and stripping. The wastewater discharged from the processes of grinding, pickling, weak corrosion, electroplating, etc. contains heavy metal ions such as copper ions and tin ions; and the wastewater discharged by etching, chemical copper deposition and the like contains copper ions and complexing agents NH4OH, EDTA and Potassium sodium tartrate and the like; in the wastewater discharged by chemical cleaning, development and stripping processes, in addition to a small amount of heavy metal ions, mainly contains high molecular organic matter, and COD is high. In addition, the etching bath liquid, the developing bath liquid, the stripping bath liquid, etc. should be frequently replaced, and the chemical cleaning bath liquid, the pickling bath liquid, the weak etching bath liquid, the chemical copper sink bath liquid, the Pb-Sn plating bath, etc. Replace regularly. The content of heavy metal ions, complexing agents and organic matter in these baths is very high, and needs to be recycled or specially treated, or combined into the relevant wastewater after pretreatment, and further processed before reaching the standard discharge.
The pretreatment of the circuit board wastewater by the iron-carbon micro-electrolysis has the function of destroying the molecular structure of the organic substance while destroying the complex, and can greatly improve the treatment effect of the coagulation and sedimentation. The operation cost of the water per ton is less than 0.3 yuan, and the operation is convenient. The filler is only consumed according to the concentration of complex ions in the wastewater, and it can play a self-control function without self-control. Not only is the operation convenient, the complexing agent has a wide adaptability to pH, and the Cu2+ concentration after treatment can generally reach 0.5 mg/L or less.
Our products have been verified by on-site use by hundreds of environmental companies and companies. In the cooperation with our customers, no one has complained to us about quality and loss. Our company has used this process to provide processing technology and micro-electrolytic fillers for many domestic circuit board (PCB) manufacturers, which have achieved remarkable results. While we are proud of it, our sales are also far ahead in our domestic counterparts. However, our stricter quality requirements have never been relaxed, so we can make the following commitments to our customers responsibly:
(1) Every sample issued by our company comes from the factory's products, a penalty of ten.
(2) The company has professional engineering and technical personnel, and will provide you with 24-hour service consultation.
(3) Under the condition of pH 3-4, the annual loss rate of our company's micro-electrolytic filler is less than 15%. This data has been certified by our customers.
I hope we can serve you and solve your worries for your business! 