Integrated reclaimed water purifier
The integrated water regenerative purifier independently developed by Zhuhai Guoao Environmental Protection Co., Ltd. combines the characteristics of MBBR + MBFB + BAF process and is a highly efficient deep treatment process.
The process is based on a mobile biofilm fluidized bed, using PW-dered activated carbon (PAC) and mobile suspended filler as the carrier, combined with the solid-liquid separation technology of the Membrane bioreactor (MBR) process to make the reaction The physical adsorption of activated carbon, the biological purification of the bioreactor and the high-efficiency separation of the inorganic stainless steel filtration membrane integrate the small molecular organic matter which is difficult to degrade in the water body with the activated carbon powder which is in a fluidized state under aeration conditions. , mixed, adsorbed, and concentrated on the surface of the activated carbon to form a local contaminant concentration area on the surface of the activated carbon;
Powdered activated carbon also provides a special surface for microbial growth. Its porous surface adsorbs a large number of microbial flora. Under high dissolved oxygen conditions, microorganisms oxidatively decompose small organic molecules enriched on the surface of activated carbon, and pass BAF combined filter. The activated carbon is precipitated and returned to the front end MBFB pool, and then the stainless steel filter membrane separation system is used to separate the suspended particles of water and the fine powder activated carbon adsorbing organic matter, and the sewage is further purified by cross-flow filtration to achieve the standard of reuse of the water. The process can effectively remove ammonia nitrogen, COD and other toxic organic substances that are difficult to degrade small molecules in micro-polluted water.
Ammonia nitrogen and NOX-N treatment effect
Reaction mechanism
In the reaction system, powdered activated carbon (PAC) is a bioactive carbon (BAC) due to the adsorption of a large number of microorganisms, so that PAC not only adsorbs and enriches small organic pollutants, but also adsorbs microorganisms by PAC. And protection, PAC adsorption of dissolved oxygen, decomposition of small molecules of organic matter under local high pollutant concentration and high dissolved oxygen conditions, and bioregeneration of PAC. In the mobile biofilm fluidized bed, suspended carriers, PAC, microorganisms, dissolved oxygen, pollutants and other elements under high-strength fluidization, mixing, mass transfer and shearing, to achieve efficient decomposition of micro-polluted small molecular organic matter
1. Adsorption and enrichment of small molecule organic matter by PAC and suspension carrier PAC can enrich pollutants to form local high concentration zone, which is beneficial to microbial growth and decomposition of micro-polluted small molecular organic matter;
2. Adsorption and protection of microorganisms by PAC and suspension carriers;
3. The adsorption of dissolved oxygen by PAC and suspension carrier, as the diameter of activated carbon particles becomes smaller, the specific surface area increases, and the adsorption of dissolved oxygen by PAC becomes stronger and stronger;
4. The decomposition of small molecules by microorganisms, the adsorption and enrichment of microorganisms, pollutants and dissolved oxygen by suspension carriers and PAC; the protection of microorganisms by PAC suspension carriers enables microbes to effectively utilize trace organic pollution The substance is a substrate, and dissolved oxygen is used as an electron acceptor to decompose organic matter in the micro-polluted water body to achieve deep purification of water quality;
5, PAC biological regeneration, activated carbon surface biofilm has oxidative decomposition of the adsorbed organic matter, can restore the adsorption capacity of activated carbon by biodegradation, achieve PAC biological regeneration, in the reaction system, high-intensity three-phase mass transfer, mixing, The turbulent flow, shearing and friction between the activated carbon particles cause the aging biofilm on the surface of the activated carbon to continuously fall off, so that the reactor maintains efficient adsorption and biodegradation functions.
Reactor characteristics
1. Long-term circulation and regeneration of activated carbon powder;
2. Three-phase mass transfer and mixing, high reaction efficiency;
3. Less loss of biological carriers;
4. The carrier has good fluidization performance;
5. High oxygen transfer efficiency;
6. The pollutants are highly enriched and the biological activity is high;
7. Good effect on micro-polluted water/deep treatment;
8. The reactor has high removal rate of COD, T-N, chroma and other pollutants, and the effect is stable;
9. No sludge is produced, and the sludge disposal cost is low;
10. The accuracy of the water discharge adjusts the mesh number of the membrane filter according to the demand to meet the various water quality requirements of the customer;
11, direct operating costs (power consumption / artificial / pharmaceutical) is low, about 0.60 yuan / ton of water;
12. The membrane module has a long service life and low maintenance cost;
13, using PLC control system, high degree of automation management, low manual operation intensity;
13. Standard modular combination and customized combination according to customer requirements.
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