High concentration of ammonia nitrogen is the main problem of leachate treatment, and traditional biological denitrification is difficult to meet the requirements of landfill leachate treatment. Single-stage autotoxic ammonia nitrogen removal technology changes the original two-stage nitrification and denitrification method into a single-stage system. A single-stage autotrophic nitrogen removal process was proposed for the first time in China. Aerobic granular sludge process and biofilm process were used to realize efficient autotrophic biological denitrification of landfill leachate and related high concentration ammonia nitrogen wastewater. The appraisal committee agreed that the treatment of landfill leachate and high-concentration ammonia-nitrogen wastewater achieved by this project has reached the international advanced level in terms of process route scheme, process optimization control, reactor start-up and microbial mechanism research.
Intelligent ultrasonic vibrating membrane bioreactor
Intelligent ultrasonic membrane bioreactor (CMBR) technology and products are combined with specific dominant bacteria.
Intelligent ultrasonic vibrating membrane bioreactor
An innovative membrane biological reaction sewage treatment technology combines the circulating carrier LC 1 (diatom suspension ball) biofilm method, low-frequency ultrasonic online dynamic cleaning technology and high-efficiency membrane separation technology (grid filtration, microfiltration, ultrafiltration, nanofiltration, reverse osmosis and ceramic filtration); It is a newly developed innovative patented technology for sewage treatment and reclaimed water reuse and an upgraded intelligent CMBR product aimed at the high concentration, high difficulty and refractory organic industrial wastewater discharged by polluting enterprises in China. The pilot test started from the printing and dyeing wastewater and pharmaceutical wastewater (fermentation pharmaceutical, chemical synthesis of pharmaceuticals, traditional Chinese medicine extraction wastewater), and also extended to landfill leachate, industrial electroplating, rubber chemical wastewater, emulsified oil wastewater and hotel catering wastewater. A large number of valuable scientific experimental data and working curves of CMBR are summarized. The test results and monitoring data of environmental protection department show that the effluent pollutants of CMBR system, such as COD, BOD, NH3-N, SS, total phosphorus, chromaticity, turbidity, deodorization, etc. , meet the national standards for reclaimed water reuse, and all microorganisms such as suspended solids (SS), oils, bacteria, viruses and spores. Was intercepted and removed. The effluent quality is better than the water quality standard of urban miscellaneous water.
TGL-type activated carbon filter is used to remove some dissolved organic substances that other filters cannot remove, such as phenol, aldehyde, textile dyes, pigments, pesticides and so on. Generally used as terminal water treatment equipment, or to remove and eventually decolorize pollutants that are difficult to degrade after biochemical treatment. Widely used in advanced treatment of water supply and drainage engineering.
The treatment of high concentration organic pollutants is a difficult and hot spot in the world industrial wastewater treatment. Advanced oxidation technology proposed by Glaze et al. provides an important way to treat organic pollutants and has become a rapidly developing new water treatment technology. Its main feature is to make full use of the strong oxidation of free radicals, especially poor free radicals, to completely degrade organic pollutants. Under this background, the electrode catalytic oxidation technology was successfully developed and reached the advanced level of similar international physical and chemical water treatment technology. It has been successfully applied to many enterprises in the United States, Japan, Malaysia, Singapore, Beijing, Shanghai, Guangdong, Zhejiang, Fujian, Sichuan and Hong Kong. It has obvious environmental and economic benefits. Electrode catalytic oxidation technology is one of the advanced treatment technologies of landfill leachate with the lowest cost, the highest efficiency and the best practicability in the world, which has reached the international advanced level of similar biochemical treatment.