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Operating method for processing wastewater containing nano nickel oxide through anaerobic ammonia oxidation technology

A technology of anaerobic ammonium oxidation and nano-nickel oxide, applied in anaerobic digestion treatment, chemical instruments and methods, biological water/sewage treatment, etc., to achieve the effect of strengthening the ability of adverse effects

Inactive Publication Date: 2018-12-25
HANGZHOU NORMAL UNIVERSITY
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Problems solved by technology

However, nanoparticles are inevitably released into aquatic or terrestrial environments during manufacturing, transportation, consumption, and disposal, and their potential risks undoubtedly pose severe challenges to the environment

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  • Operating method for processing wastewater containing nano nickel oxide through anaerobic ammonia oxidation technology

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Embodiment 1

[0023] In continuous flow, an upflow anaerobic sludge bed (UASB) reactor with an effective volume of 1 L (e.g. figure 1 ), with an activity of 245 g TN·g -1 VSS·d -1 The anaerobic ammonium oxidation granular sludge is inoculated sludge, which simulates the influent NH of wastewater 4 + -N and NO 2 - -N is added at a ratio of 1:1, and the inorganic salt buffer and trace element I and trace element II to maintain the growth of microorganisms are added to adjust the operation of the reactor. o C. Operate under the condition that the influent pH is 7.80±0.19 and the hydraulic retention time is 0.96 h. The composition of the final concentration of the inorganic salt buffer solution in the simulated wastewater in the influent: KH 2 PO 4 10 mg·L -1 , CaCl 2 2H 2 O 5.6 mg L -1 , MgSO 4 ·7H 2 O 300 mg·L -1 , KHCO 3 1250 mg·L -1 , the solvent is deionized water; each 1.25 mL of trace element I and trace element II is added to 1 L of influent water, trace element I: EDT...

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Abstract

The invention provides an operating method for processing wastewater containing nano nickel oxide through an anaerobic ammonia oxidation technology. The method comprises the following steps: using anup-flow anaerobic sludge bed reactor, using anaerobic ammonia oxidation granule sludge as an inoculating source, and using simulation wastewater containing NH4<+>-N and NO2-N as feed water, operatingunder the conditions of anaerobism, photophobism, 35+(-)1 DEG C of a temperature, 7.80+(-)0.19 of a feed water pH and 0.96 h of hydraulic retention time, through controlling NiO NPs load and a feed water matrix concentration, and operating in three stages which are a starting stage, an exposing stage and a recovering stage. The invention provides a NiO NPs tolerated sludge acclimation method, andfurther provides a performance recovering strategy for processing the wastewater containing NiO NPs through the reactor.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, and in particular relates to an operation method for treating wastewater containing nano-nickel oxide by an anaerobic ammonium oxidation process. Background technique [0002] Due to the unique physicochemical properties of nanomaterials, most nanometal particles have been widely used in various industrial products, such as electrochemical devices, cosmetics, food additives, catalysts, and biomedical systems, etc. However, nanoparticles are inevitably released into aquatic or terrestrial environments during manufacturing, transportation, consumption, and disposal, and their potential risks undoubtedly pose severe challenges to the environment. [0003] Among them, nano-nickel oxide (NiO NPs) has been widely used in light-emitting diodes, lithium-ion batteries, and electrochromic films due to its high capacitance properties. In recent years, the potential toxicity of NiO NPs to human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/20
CPCC02F3/2846C02F2101/20
Inventor 金仁村徐佳佳程雅菲
Owner HANGZHOU NORMAL UNIVERSITY
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