The pickling process in the iron and steel industry uses strong acid to remove the oxide scale on the metal surface. The whole process is cumbersome, and if the acid solution after pickling is not handled properly, it will easily cause serious pollution to the environment. The companies behind the pickling industry have to bear high processing costs. Its increasingly exposed drawbacks have also made many companies anxious. In order to solve this problem, Kailian Environmental finally made a new breakthrough in acid treatment after continuous research and development and attempts. After 4 years of field tests, the acid regeneration equipment was successfully implemented.

The average daily processing capacity of waste acid of this equipment can reach up to 13.6 tons per day, and the continuous processing 24 hours a day requires about 2160 kWh of electricity. Calculated on the basis of 0.6/kWh of industrial electricity, the average cost of treating one ton of waste acid is only 95.3 yuan, which can save 1/3 of the new acid compared to before using the equipment, and part of the cost can be recovered through transfer crystallization. Taking sulfuric acid as an example, if 13.6 tons of waste sulfuric acid is processed in one day, about 4 tons of pure acid-water mixture can be recovered, and about 4.8 tons of unsaturated pickling solution can be recovered. Ferrous sulfate is about 4.8 tons. Among them, the pure acid-water mixture and the unsaturated pickling solution can be continuously used for pickling when mixed with new sulfuric acid and water, and thus circulate.

The electroplating wastewater is divided into high-concentration wastewater and general rinsing wastewater. The high-concentration wastewater is initially treated and then discharged to the wastewater treatment center for further treatment;

Wastewater source classification→online early warning→online monitoring→scientific control of enterprise drainage water quality;

Efficient physicochemical reaction and automatic control system, the control of heavy metals reaches the secondary/tertiary standard;

High-efficiency bioreactor to degrade COD/ammonia nitrogen/total phosphorus and other organics;

At present, wastewater with high salinity, high COD and high ammonia nitrogen is a difficult point in sewage treatment projects. From the perspective of practical problem solving, Kailian Environmental Protection has explored electrocatalysis, photocatalysis, enzymatic catalysis, micro-electrolysis and chemical catalysis On the basis of the above-mentioned single catalytic method, a set of composite catalytic processes was developed and summarized; in the case of superposition of composite catalytic oxidation processes, it has a good effect on refractory organic compounds and some surfactant small molecule organic compounds. The removal effect of the composite process is superimposed in the presence of free hydroxyl groups, free oxygen ions and catalysts.

After continuous improvement and on-site operation, the equipment has been able to do the following:

(1) Fully automated, the system is highly integrated to achieve unattended, no need for human operation.

(2) Break away from the limitations of traditional craftsmanship, greatly reduce the dosage of pharmaceuticals, and even in some cases

This low-temperature evaporation equipment is a treatment equipment specially developed by the company for high-concentration wastewater and highly corrosive wastewater. The main body of the equipment and the material pipeline are made of PP material, which can cope with a variety of highly corrosive wastewater like Electroplating industry, steel pickling industry, landfill leachate concentrate. The material can directly enter the evaporation equipment without adjusting the pH to neutral, so that the treatment cost can be greatly reduced. At present, the traditional process is still using neutralization, flocculation and precipitation to treat the high-concentration waste liquid and then enter the evaporation equipment to concentrate, because the high-concentration waste liquid is still concentrated. The liquid is generally in a state of high concentration, which requires a large amount of alkali or acid to neutralize, resulting in the first cost. Secondly, a large amount of sludge will be generated after neutralization, and the enterprise needs to transfer the sludge to a third party for treatment, which will generate a second cost. With our evaporation equipment, there is no need for neutralization and dosing. It can be directly introduced into wastewater treatment, in addition to the loss of electrical energy, the daily depreciation of equipment. No other charges are incurred. Product advantages:

Reverse osmosis is a membrane separation technology that uses the function of selective permeation (semi-permeable) membrane as the driving force. When the pressure applied in the system is greater than the osmotic pressure of the influent solution, the water molecules will continuously Through the membrane, it flows into the central tube through the permeate flow channel, and then the impurities in the water, such as ions, organics, bacteria, viruses, etc., flow out at one end, are trapped at the inlet side of the membrane, and then flow out at the outlet end of the concentrated water to achieve separation. Purification purpose.

In the long-term engineering practice, we have continuously summed up and researched and developed a set of unattended automatic operation membrane equipment system; saving labor costs, reasonable design, extending the operating period of the membrane, shortening the frequency of membrane cleaning, Extend the life of the membrane system and ensure the stable effluent quality of the membrane system. The use of this professional reverse osmosis membrane water treatment technology can meet the water treatment requirements of industrial wastewater, domestic sewage, landfill leachate and other industries. The equipment can run continuously, easy to operate, and easy to install and maintain. And the water output is up to 30% higher than the traditional membrane system process, and the probability of membrane block blockage is reduced by 50%.

We have accumulated rich practical experience in various water treatment projects and established a good reputation, and we have provided external agents for the water treatment process. The company adheres to the concept of "pursuing excellence, common development, benefiting others and benefiting ourselves, and win-win cooperation", with economical and reasonable prices, high-quality and perfect services, and wholeheartedly solve various water treatment problems for you. Wide range of application fields, products involving: petroleum, chemical industry, electric power, electronics, metallurgy, leather, papermaking, environmental protection, textile printing and dyeing, municipal sewage treatment, industrial sewage treatment, new water regeneration, food, medicine, transportation and other industries. Provide users with effective measures such as energy saving, consumption reduction, pollution reduction, and efficiency enhancement to ensure that users achieve better production efficiency and benefit added value.

The company independently develops and produces various special chemicals for the water treatment industry: scale inhibitors, bactericides, reducing agents and special membrane cleaning agents for reverse osmosis membrane equipment; heavy metal remover, COD remover, ammonia nitrogen remover , phosphorus remover; biological deodorant; biochemical microorganism culture agent, etc.

Since the establishment of Kailian Environmental Protection, it has focused on the treatment technology of high-concentration wastewater, and has been deeply engaged in industrial wastewater treatment since then. At present, Kailian Environmental Protection has the ability to comprehensively solve the whole water treatment system, and has corresponding technical reserves and routes for water supply system, desalination system, sewage system, reclaimed water reuse system, circulating water system and zero discharge system. , which can provide large-scale customers with comprehensive solutions for the whole process of energy, chemical and water systems.