In the field of industrial wastewater treatment, high-salt wastewater has always been a "difficult" problem. Chemical, pharmaceutical, printing and dyeing, coal chemical and other industries produce a large amount of wastewater with a salt content of more than 1% every day. Traditional treatment processes are either difficult to stably meet the standards or the costs are so high that companies call it "burning money." However, with the breakthrough of electrochemical technology, an electrode with titanium-based materials as the core is becoming the key to breaking the deadlock. How does this technology, called "titanium electrode," solve the dilemma of high-salt wastewater treatment? This article reveals it for you.
一,High-salinity wastewater treatment: a double dilemma of environmental protection and economy
1.High-salinity wastewater is known as "one of the most difficult wastewaters to treat" due to its high salt content and complex composition. Traditional treatment methods face three major bottlenecks:
Evaporation and crystallization: high energy consumption and easy scaling - salt concentration is achieved by heating and evaporating water, but it consumes dozens of kilowatt-hours of electricity for every ton of wastewater treated, and maintenance costs soar after equipment scaling.
Biochemical treatment: microbial "strike" - high-salinity environment will directly kill microorganisms in activated sludge, causing the biochemical system to paralyze.
Membrane separation technology: cost and life game - although reverse osmosis membranes can intercept salt, the membranes are severely polluted, the replacement frequency is high, and the long-term cost is worrying.
2. Enterprises' "dilemma"
On one hand, there are strict constraints of environmental protection laws and regulations - COD, ammonia nitrogen, total salt and other indicators must meet the discharge standards; on the other hand, there is the pressure of treatment costs. Taking the coal chemical industry as an example, the cost of treating wastewater per ton may be as high as 30-50 yuan, accounting for more than 10% of the total cost of the enterprise. Some enterprises even choose to discharge secretly due to high costs, facing huge fines and reputation risks.
二, Titanium electrode: the "game-breaker" of electrochemical technology
When traditional processes are stuck in a deadlock, electrochemical oxidation technology has emerged with the advantage of "replacing drugs with electricity", and JM-TITANIUM's titanium electrode is its core component.
1. The "hard core strength" of titanium electrodes
Corrosion resistance: "Indestructible" to cope with high-salt environments-the precious metal oxide coatings such as ruthenium, iridium, and platinum covered on the surface of the titanium substrate are extremely stable in strong acid, strong alkali, and high-salt environments, and the service life can reach 5-10 years, far exceeding the 1-2 years of graphite electrodes.
Efficient catalysis: Let the current "transform" into a cleaning agent-through the action of the electric field, the titanium electrode can directly oxidize and decompose organic matter (such as COD, benzene series), and at the same time convert chloride ions into strong oxidants such as hypochlorous acid, realizing "drug-free" treatment.
Modular design: Flexible adaptation to different scenarios-the electrode plates can be stacked into reactors of different sizes, which can not only treat small wastewater of several tons per hour, but also cope with large-scale projects of thousands of tons.
2. Technical principle: an "electrically driven chemical revolution"
Under the action of the electric field, the chloride ions (Cl⁻) in the high-salinity wastewater are oxidized to hypochlorite (ClO⁻), and strong oxidizing substances such as hydroxyl radicals (·OH) are produced. These "cleaners" can attack organic pollutants indiscriminately and mineralize them into carbon dioxide and water. The whole process does not require the addition of chemical agents, avoiding secondary pollution.
三,Compared with traditional processes, our titanium electrode technology has achieved three disruptive breakthroughs:
1. Cost cut: from "burning money" to "making money"
Energy consumption reduced by more than 50%: Taking the treatment of 1 ton of wastewater with a salt content of 2% as an example, the electrochemical method consumes about 5-8 degrees of electricity, which is only 1/3 of evaporation and crystallization.
Zero cost of reagents: No need to purchase flocculants such as PAC and PAM, saving millions of reagents every year.
80% reduction in sludge: The amount of sludge produced by electrochemical oxidation is much lower than that of the biochemical method, and the cost of hazardous waste disposal has been greatly reduced.
2. Improved effect: from "anxiety about meeting standards" to "stability and worry-free"
COD removal rate exceeds 90%: Even in the face of difficult-to-degrade organic matter (such as dyes and pesticide intermediates), it can stably meet the standards.
Strong impact resistance: When the influent water quality fluctuates, it can quickly adapt by adjusting the current, avoiding the risk of collapse of the biochemical system.
3. Resource recycling: from "waste" to "wealth"
Some projects can extract industrial salt (such as sodium chloride and sodium sulfate) from wastewater through concentrated crystallization technology, realizing "turning waste into treasure". A coal chemical enterprise recycles more than 20,000 tons of industrial salt annually, directly generating tens of millions of yuan in revenue.
四, Application Cases: How does titanium electrode "save" high-salt wastewater?
1. Case 1: "Resurrection" of printing and dyeing wastewater
A printing and dyeing park in Zhejiang was once restricted due to high salt content and excessive color in wastewater. After the introduction of titanium electrode electrochemical equipment, COD dropped from 800mg/L to below 50mg/L, and the color removal rate reached 95%, saving 8 million yuan in operating costs each year.
2. Case 2: "Ultimate Solution" for Leachate
The salt content of leachate from a waste incineration plant exceeded 4%, which was difficult to handle with traditional processes. After adopting the titanium electrode + membrane concentration process, the produced water met the reuse standard, and the evaporation of the concentrated liquid was reduced by 70%, completely solving the problem of "leachate siege".
3. Case 3: "Invisible Assistance" in the New Energy Industry
In the production of lithium battery materials, titanium electrode technology is used to recover metals such as cobalt and nickel in waste liquid, which not only reduces pollution but also improves resource utilization.
Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Country:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Gmail:nicole@jmyunti.com
Website:www.jm-titanium.com
