Iron-carbon micro-electrolysis filler can treat a variety of sewage, but many users are worried about its treatment effect. The combination of micro-electrolysis process and Fenton process can effectively reduce COD in 13 wastewater, so what kind of 13 wastewater is it? What effect can this 13 waste water achieve? The data are as follows. 1. Electroplating wastewater and circuit board wastewater: remove heavy metal ions, reduce COD and remove chromaticity. The removal rate of COD is above 80%. 2. Pharmaceutical and pharmaceutical intermediate wastewater: Micro-electrolysis +Fenton process is generally adopted, and the COD removal rate is generally between 20% and 40%. The most important thing is to improve the biodegradability of wastewater and reduce its toxicity. 3. Wastewater from the production of pesticides and their intermediates: The combined process of micro-electrolysis and Fenton is generally adopted, and the COD removal rate is generally between 10-35%. The most important thing is to improve the biodegradability of wastewater and reduce its toxicity. 4. Wastewater from rubber additives production: mainly used for wastewater from M, DM, CZ(CBS), NS, DZ and other products. Because of the high salt content in wastewater, it is impossible to carry out biochemical treatment. Take M wastewater as an example. After micro-electrolysis and Fenton treatment, COD can be reduced from 5000-8000 to 200-300. 5. Phenolic resin production wastewater: The high-concentration wastewater is pretreated by micro-electrolysis and +Fenton, and the COD removal rate is about 36-40%, and the raw water COD is about 22,000. 6. Furfural production wastewater: micro-electrolysis is used as pretreatment, and the water contains a lot of acetic acid, which is mainly used to improve the biodegradability of wastewater. The removal rate of COD is about 10%, and the COD of raw water is between 30000 and 35000. 7. Rosin production wastewater: The micro-electrolysis process is adopted to improve the biodegradability of wastewater, and the COD removal rate is 20-30%. 8. Spice production wastewater: the water quality is complex, the content of macromolecular substances is high, and the biodegradability is poor. The combination of micro-electrolysis and Fenton process is mainly used to break the chain and improve the biodegradability of wastewater, thus ensuring the continuous and stable operation of subsequent biochemical treatment. 9. Dye production wastewater: There are many kinds of dye production wastewater products. The main function of micro-electrolysis is to remove chroma, reduce COD and improve biodegradability. Generally, the removal rate of COD is about 40-50% when micro-electrolysis is combined with Fenton. 10, pigment production wastewater: There are many kinds of pigment production wastewater products, and the main function of micro-electrolysis is to remove chromaticity, reduce COD and improve biodegradability. Generally, combined with micro-electrolysis and Fenton, the removal rate of COD is about 50%, and some simple ones can even reach more than 90%. 1 1. High-concentration fine chemical industry: This kind of wastewater is characterized by complex water quality, high COD concentration and high salt content in raw water, which is difficult to biodegrade. The main function of micro-electrolysis as pretreatment is to break the chain and improve the biodegradability of wastewater 12, water-based paint production wastewater: Water-based paint wastewater has high suspended solids, high COD, high organic matter, is difficult to degrade and fluctuates greatly. Because the water-based paint wastewater is mainly benzene molecules, and its color is changeable and complex, and its biodegradability is poor, which affects the pretreatment effect, so the series of wastewater is treated by micro-electrolysis to improve its biodegradability. After micro-electrolysis pretreatment, water-based paint wastewater and other wastewater enter the regulating tank to adjust the PH value, then enter the electro-flocculation system for pretreatment, and then complete the treatment process of "one-stage two-phase separation +EGSB+A+3O+MBR+ qualified water discharge". 13. Garlic slice wastewater: Garlic slice wastewater is a kind of high-concentration wastewater, and its CODCr is close to10000 mg/L. Although this wastewater itself is not toxic, it contains a lot of biodegradable organic matter. If discharged directly into the water without treatment, it will consume a lot of dissolved oxygen in the water, resulting in hypoxia in the water. The water quality of each wastewater treated by iron-carbon micro-electrolysis filler is different. It is suggested that the final scheme should be determined after obtaining the key data through experiments. 13 In addition to the above main refractory organic wastewater, we can also treat other refractory wastewater. For example, desulfurization wastewater treatment, degreasing and phosphating wastewater treatment, nickel plating wastewater treatment, pig farm wastewater treatment, various aquaculture wastewater treatment, emulsified oil wastewater treatment, ammonia nitrogen wastewater treatment, silicone wastewater treatment and so on.