High-difficulty wastewater treatment method and device with zero concentrated solution and zero solid waste
A technology for wastewater treatment and concentrated liquid, which is used in dehydration/drying/concentrated sludge treatment, water/sewage treatment, natural water treatment, etc. It can solve the problems of unstable treatment effect, low operating cost, and high investment cost, and reduce The effect of equipment investment, energy saving and volume reduction
Inactive Publication Date: 2020-06-30
艾西姆(辽宁)环境技术有限公司
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Problems solved by technology
When wet catalytic oxidation technology is used for treatment, the operating cost is low, energy recovery can be carried out, and the treatment efficiency is high. The treated waste liquid can be returned to the biochemical system for biochemical treatment, but the investment cost is high, and the treatment effect is unstable, and ammonia nitrogen exceeds the standard. possibility of
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Embodiment 1
[0067] A highly difficult wastewater treatment device with zero concentrated liquid and zero solid waste, its structure diagram is shown in image 3 , including biochemical treatment unit 1, LROT treatment unit 2, sludge drying unit 4, secondary concentration unit 3, spray drying unit 5 and incineration unit 6;
[0068] The structure diagram of the LROT processing unit of this embodiment is shown in Figure 4 , mainly including filtration subunit I, resin adsorption subunit II, electrocatalytic oxidation subunit III, resin regeneration subunit IV, alkali recovery subunit V, among which, filtration subunit I, resin adsorption subunit II, electrocatalytic oxidation subunit Unit III is connected in sequence, and the electrocatalytic oxidation subunit III is provided with a discharge port for water reaching the standard; the resin adsorption subunit II is provided with a bypass connected with the resin regeneration subunit IV and the alkali recovery subunit V, and the alkali recov...
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The invention discloses a high-difficulty wastewater treatment method and a device with zero concentrated solution and zero solid waste, and belongs to the field of high-difficulty wastewater treatment. The method comprises the following steps: carrying out biochemical treatment and LROT treatment on high-difficulty wastewater, and discharging up-to-standard water; adding a coagulant into an obtained organic concentrated waste liquid; carrying out secondary concentration on the organic concentrated waste liquid to obtain a high-concentration concentrated solution, carrying out spray drying onthe high-concentration concentrated solution with hot air, carrying out sludge drying on residual sludge generated after biological treatment with obtained tail gas, and carrying out incineration treatment on dried organic matters obtained after spray drying and dried sludge obtained after sludge treatment to obtain CO2+H2O. The device comprises a biochemical treatment unit, an LROT treatment unit, a sludge drying unit, a secondary concentration unit, a spray drying unit and an incineration unit, according to the method, on the basis of ensuring that all indexes are superior to industrial standards, equipment investment and operation cost are reduced, concentrated water discharge or concentrated water crystallization is not generated, meanwhile, discharged pollutants can be fully recycled,a large amount of energy is saved, and economic advantages are obvious.
Description
technical field [0001] The invention relates to the field of water treatment, in particular to the field of difficult wastewater treatment, in particular to a difficult wastewater treatment device and method with zero concentrated liquid and zero solid waste. Background technique [0002] With the development of my country's economy and the increase in the number of cities, the development of all walks of life has achieved remarkable results. However, with the country's increasingly stringent water resources management system, the management and control of landfill leachate, coal chemical wastewater, pharmaceutical wastewater and other industrial wastewater has received widespread attention. Wastewater from these industries is highly difficult wastewater, among which landfill leachate is high-concentration refractory organic wastewater, which has the characteristics of complex composition, high concentration of pollutants, unbalanced ratio of biological nutrients, high chrom...
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IPC IPC(8): C02F9/14C02F11/12F23G7/00C02F101/16C02F101/30C02F103/06C02F103/34
CPCC02F9/00C02F11/12F23G7/001C02F3/30C02F1/001C02F1/285C02F1/4672C02F2303/16C02F1/52C02F1/04C02F1/444C02F2103/06C02F2103/343C02F1/5236C02F2101/16C02F2101/30
Inventor 王惠丰王富民
Owner 艾西姆(辽宁)环境技术有限公司