Semi-coke wastewater treatment method
A technology of blue carbon wastewater and treatment method, which is applied in multi-stage water treatment, water/sewage treatment, water treatment parameter control, etc. The effect of row strengthening treatment and multi-stage membrane unit
Pending Publication Date: 2021-05-28
陕西尚远水务有限公司
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[0011] In order to solve the complex problem of the existing semi-coke wastewater treatment process, the present invention provides a method for treating semi-coke wastewater. The method removes the deacidification, dephenolization and oil removal units, and uses the evaporation concentration unit to control the operating temperature at 40-40°C. 60 ℃, through pH adjustment, reduce the volatilization of phenolic substances, trap most of the organic substances in the concentrated solution, reduce the pressure of subsequent biochemical treatment, and at the same time, at this temperature, it can effectively solve the wall attachment and scaling of oil and organic substances Phenomenon
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Embodiment 1
[0034] see figure 1 , a semi-coke wastewater treatment method, including accident water treatment, pretreatment, biochemical treatment, advanced treatment and sludge treatment, accident water treatment, is to use the accident pool to store the semi-coke wastewater discharged under the accident state or maintenance state, when the system After stabilization, use the pump to transport to the pH adjustment unit with a small flow rate.
[0035] The pretreatment is as follows: the semi-coke wastewater passes through the pH adjustment unit, the evaporation concentration unit and the ammonia blowing unit in sequence to obtain pretreated wastewater; the pretreated wastewater is biochemically treated to obtain biochemically treated wastewater; the advanced treatment is: biochemically treated The waste water passes through the heterogeneous catalytic oxidation unit to obtain reuse water. Sludge treatment is used to directly concentrate and dehydrate the sludge generated by biochemical ...
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The invention relates to the technical field of wastewater treatment, in particular to a semi-coke wastewater treatment method. The method comprises pretreatment, biochemical treatment and advanced treatment, and the pretreatment comprises the following steps: enabling semi-coke wastewater to sequentially pass through a pH adjusting unit, an evaporation and concentration unit and an ammonia blowing unit to obtain pretreated wastewater, wherein biochemical treatment wastewater is obtained after the biochemical treatment of the pretreated wastewater; the deep treatment is as follows: the biochemical treatment wastewater passes through a heterogeneous catalytic oxidation unit to obtain reuse water. The deacidification unit, the dephenolization unit, the oil removal unit and the like are removed, the evaporation and concentration unit is utilized, the operation temperature is controlled to be 40-60 DEG C, through pH adjustment, volatilization of phenolic substances is reduced, most organic matters are intercepted in a concentrated solution, the follow-up biochemical treatment pressure is relieved, and meanwhile, the phenomena of wall attachment and scaling of oils and organic matters can be effectively solved at the temperature.
Description
technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a semi-coke wastewater treatment method. Background technique [0002] Semi-coke wastewater is the wastewater produced during the medium-low temperature carbonization (about 650 °C) process of coal, mainly from the circulating water for cooling and washing the gas and the separated water in the chemical production process. Semi-coke is a low-temperature dry distillation, which produces a large amount of tar and a lot of low-molecular organic matter in the production process, so the wastewater contains a large number of pollutants that have not been oxidized by high temperature, and its concentration is about 10 times higher than that of coking wastewater, so it is higher than that of coking wastewater. Wastewater is more difficult to deal with. [0003] The composition of semi-coke wastewater is complex, and there are more than 300 kinds of pollutants. ...
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IPC IPC(8): C02F9/14C02F101/34C02F101/32C02F101/30C02F101/18C02F101/16C02F101/10
CPCC02F9/00C02F1/66C02F1/048C02F1/20C02F3/30C02F1/08C02F1/78C02F1/725C02F2305/023C02F2101/30C02F2101/16C02F2301/08C02F2209/08C02F2209/14C02F2209/10C02F2101/345C02F2101/32C02F2101/10C02F2101/18C02F2101/101
Inventor 吴贵凡罗伟王树岩谭博
Owner 陕西尚远水务有限公司