Equipment for making full use of urban water resources
Integrated reclaimed water treatment equipmentMembrane bioreactorTechnology is a new process combining biological treatment technology and membrane separation technology, replacing theSecondary sedimentation tankIt can perform solid-liquid separation efficiently to obtain stable reclaimed water for direct use.In addition, it can maintain a high concentration of microbial biomass in the biological tank. The process has less excess sludge, which can effectively remove ammonia nitrogen. The suspended solids and turbidity of the effluent are close to zero. The bacteria and viruses in the effluent are largely removed, with low energy consumption and small floor area.
Chinese name
Reclaimed water treatment equipment
Foreign name
Water treatment equipment
Purpose
Make urban water supply based on demand and quality
Water is a precious resource. With the rapid development of the four modernizations and the improvement of people's living standards, the amount of water is increasing.Water resources in many areas have become increasingly scarce, and water shortage has become a common problem in many large cities in the world today.Develop reclaimed water treatment technology to make urban water supply according to demand and quality, and make urban water supply according to demand and quality, so as to make the water quality standard adapt to the use of water bodies.Making full use of urban reclaimed water resources can alleviate the shortage of urban water supply.
Treatment process
Announce
edit
The reclaimed water reuse treatment process determines the best treatment process based on the quality and quantity of sewage and the requirements for the quality and quantity of reused water, taking into account economic and technical parameters.The commonly used treatment process is mainly sewage secondary biochemical treatment plus tertiary advanced treatment unit.Different water quality requirements have different treatment processes.
（1）Pretreatment: also known as primary processing, which generally includes interception;Precipitation;Water quality and quantity regulation;Degreasing;Hydrolytic acidificationIt has a certain removal effect on the polluted impurities in the water. The main function is to ensure the stability of the subsequent treatment. The pre-treatment method is determined according to the physical properties of the impurities in the raw water.
(2) Secondary treatment: it is the main body of reclaimed water reuse treatment, and the main processes include physical and chemical treatment (coagulation and sedimentation process, etc.);Biological treatment (microbial or plant adsorption and degradation treatment, etc.);Physical treatment (membrane filtration treatment, etc.) is mainly used to remove pollutants in the water, and the process is determined according to the pollutant types and physical and chemical properties of raw water.
(3) Advanced treatment: it is the final treatment of the treated sewage before reuse to ensure water quality and water safety.The main processes are: sterilization;Ion exchange;Media filtration;Membrane separationIt shall be selected according to the types and properties of impurities or secondary pollutants that may exist after raw water treatment.
(4) Reuse of reclaimed water: It is composed of reclaimed water collection and transmission facilities, which are transported by independent pipelines and directly drink water with pipelines;Tap water and other clean water supply facilities that directly contact the human body shall be separated, and there shall be no direct connection of pipes to ensure water safety.
(5) Equipment combination: according to the same or similar water quality of some raw water, the treatment process for this kind of water will be integrated and optimized and made into equipment to produceEfficient reclaimed water treatment equipment。For example, the integrated membrane bioreactor used for the treatment of ordinary domestic sewage is to integrate the pretreatment (barrier net interception), secondary treatment (biodegradation+membrane separation), advanced treatment (sterilization) and other processes into an integrated equipment, and the raw water can be directly reused for domestic miscellaneous purposes after being treated by the equipment.
