Multipoint water feeding sewage treatment process by zeolite and organism united adsorption and regeneration

Abstract

A multi-point water inflow zeolite biology combined adsorption regenerative sewage disposal technology relates to removal and disposal of pollutants in urban sewerage, sewage and industrial organic waste water (comprising organism, ammonia nitrogen and phosphor). The multi-point water inflow zeolite biology combined adsorption regenerative sewage disposal technology is composed of zeolite biological combined adsorption regenerative technology, denitrify / nitrify (A / O) denitrification technology, chemical dephosphorization method, not only has retained the advantage of zeolite biological combined adsorption regenerative technology, but also has raised removal efficiency of ammonia nitrogen and total nitrogen, increases functions of chemical dephosphorization, and raises the regenerative effect of zeolite powder effectively through multi-point water inflow. The technology of the invention applies to city waste water and sewage, processing organism, ammonia nitrogen, total nitrogen and phosphor of biochemical industrial organic waste water to reach the standards, has advantages of saving investment, low working costs, a little occupation area, operation flexibilities, and has raised the processing of remaining mud, has good economy, environment and social benefit.

Description

technical field [0001] The multi-point influent zeolite biological joint adsorption regeneration sewage treatment process involves the removal and treatment of pollutants in urban sewage, domestic sewage and industrial organic wastewater (including organic matter, ammonia nitrogen, phosphorus). Background technique [0002] At present, the main denitrification technologies include biological methods and physical and chemical methods. The biological method is to remove nitrogen-containing organic matter in sewage through the nitrification and denitrification of specific microorganisms. This method has low energy consumption and low operating cost. At present, most sewage treatment plants use biological methods to achieve denitrification effects. However, the biological method has the disadvantages of long hydraulic retention time, large floor area and infrastructure costs, the treatment effect is easily affected by the climate, and the effluent quality is unstable. [0003]...

AI Technical Summary

Problems solved by technology

However, the process still has the following disadvantages: (1) When the concentration of ammonia nitrogen in the effluent is low, the concentration of zeolite in the adsorption pool is high, and a large amount of zeolite needs to be added; (2) The regeneration pool is equipped with a denitrification process, The denitrification section may affect the denitrification effect due to insufficient carbon source; (3) The process does not consider the removal of phosphorus; therefore, the process needs to be further optimized

Biological phosphorus removal is based on the principle that phosphorus-storing microorganisms release phosphorus in the anaerobic section and absorb excessive phosphorus in the aerobic section to remove phosphorus-containing pollutants in water through sludge discharge. Although this method has low operating costs and low energy consumption, it is There are also disadvantages such as unstable treatment effect, difficult control of operating conditions, phosphorus removal is still required for excess sludge, and it is difficult to carry out synchronously with biological nitrogen removal

Chemical phosphorus removal can make up for the deficiency of biological phosphorus removal, but it is difficult to be popularized and applied due to the large dosage of drugs and high operating costs.

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