A process system for synergistic removal of fe, mn and ammonia nitrogen in compound micro-polluted water source water

Abstract

The invention discloses a system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water. For surface water treatment, the system is composed of a mix reaction precipitation system, a chemical assisted oxidation system, an air oxidation system, a filter system and a disinfection system; and for ground water treatment, the system is composed of all the components in the surface water treatment system except the mix reaction precipitation system. The system reasonably and effectively integrates many techniques, such as mass transfer oxygen charging, natural oxidation, chemical oxidation, trapping filtration, physicochemical adsorption, contact catalysis / biological oxidation and the like, and can effectively and synergically remove turbidity, chroma, Fe, Mn and ammonia nitrogen in composite micropolluted source water. The system has the technical advantages of high removal efficiency, high treatment speed, small influence by environmental factors, no side effect, simple operational management and the like, and the economic advantages of low engineering investment and low operating cost; and the system is suitable for design of new water plants, and is easy for implementing upgrading modification of the existing water plants.

Description

technical field [0001] The invention belongs to the technical field of drinking water treatment, and mainly relates to a technical method for synergistic removal of Fe, Mn and ammonia nitrogen in composite micro-polluted water source water, and specifically relates to a composite micro-polluted water source water with technology integration, short process, efficient treatment and complete system Fe, Mn and ammonia nitrogen synergistic removal process. Background technique [0002] In recent years, my country's water pollution has become increasingly serious, and drinking water sources have also been polluted to varying degrees, especially in recent years, the frequent occurrence of composite micro-pollutions such as Fe, Mn, and ammonia nitrogen in drinking water sources across the country has caused a direct threat to the safety of drinking water quality. , and the conventional drinking water purification process has been difficult to ensure the supply of drinking water after...

AI Technical Summary

Problems solved by technology

The common ammonia nitrogen treatment methods mainly include adsorption removal method, breakpoint chlorination method and biological denitrification method, etc. Among them, the adsorption removal method is rarely used because of its shortcomings such as high construction and operation costs and difficult operation and management; Although it can remove ammonia nitrogen in water, the increase in chlorine dosage will easily lead to an increase in the risk of disinfection by-products, resulting in a decrease in water quality safety; biological denitrification methods such as biological contact oxidation or biological aerated filters are often used in conventional denitrification methods. The biological pretreatment process added before the treatment process, although the removal rate of ammonia nitrogen in tap water can reach 80%, and has a certain removal effect on iron and manganese (less than 50%), but its process is long and affected by temperature. The influence of factors such as long cycle, large investment, high operating costs, and difficult operation and management greatly restricts its promotion and application.

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