4 results about "Treated water sample" patented technology

The invention relates to the technical field of water quality monitoring, and discloses a DOC spectrum monitoring method and device. Comprising the following steps: pre-treating a water sample through a filtering device to eliminate the interference of turbidity on spectrum detection; conveying the pretreated water sample into a detachable flow cell, and collecting an ultraviolet spectrum of the water sample through an independently arranged light source spectrometer; determining a target characteristic wavelength subset from the ultraviolet spectrum; inputting the target characteristic wavelength subset into a pre-trained integrated meta-model to obtain a predicted value of the DOC concentration in the water sample; wherein the integrated meta-model is constructed by adopting a Stacking strategy and comprises a plurality of base models and a meta-model, and the meta-model is used for learning prediction results of the base models and performing fusion output; according to the monitoring system state or the preset maintenance period, before the flow cell is disassembled and maintained, the backwashing unit is triggered to execute the pre-cleaning operation, and the technical scheme is provided which gives consideration to the installation convenience, the monitoring accuracy and the operation stability.

This invention relates to the field of water treatment technology and discloses an intermittent electrocatalytic treatment method for trace estrogen in reclaimed water. The method is carried out in a three-dimensional electrode reactor. Before formal treatment, a pre-treated water sample containing the estrogen to be removed is used to pre-saturate the particle electrode. Subsequently, reclaimed water containing one or more estrogenic pollutants is continuously introduced into the reactor, operating at a current density of 1.0–10.0 mA / cm², a hydraulic retention time of 5–20 min, and an aeration rate of 0–3.0 L / min. An intermittent power supply mode with alternating power on and off is employed, wherein the ratio of power on time to power off time is 1:1, and the power off time is 2–120 s. During the power off phase, the estrogen to be removed accumulates on the surface of the particle electrode. During the power on phase, the particle electrode repolarizes to form a micro-battery and undergoes electrochemical oxidation in conjunction with the anode, causing direct oxidation and / or indirect oxidation mediated by an electrogenerated oxidant, while the particle electrode achieves in-situ regeneration. The method is applicable to the treatment of trace amounts of estrogens in reclaimed water, preferably one or more of estrone (E1), 17β-estradiol (E2), estriol (E3), 17α-ethinylestradiol (EE2), and bisphenol A (BPA). This invention can reduce the artificially inflated impact of adsorption on the evaluation of treatment effectiveness, and reduce energy consumption while ensuring treatment efficiency.

The invention relates to the technical field of data processing and water quality detection, and provides a signal processing method of a multi-parameter water quality analyzer and a related device, the method comprises the following steps: using a photoelectric detection module to obtain a first detection light signal generated when a to-be-treated water sample plate is subjected to laser irradiation; performing conversion processing on the first detection optical signal to obtain a first detection electric signal; optimizing the first detection electric signal to obtain a second detection electric signal; performing spectrum construction according to the second detection electric signal to obtain target spectrum information; and determining pollutant information of the to-be-treated water sample plate according to the target spectral information. By adopting the method provided by the invention, the accuracy of the signal processing process can be improved.

This invention discloses a treatment process and system for residual organic wastewater from reverse flotation and subsequent desilication of demagnesium phosphate concentrate, belonging to the field of wastewater treatment technology. In the reverse flotation and subsequent desilication process of demagnesium phosphate concentrate, the filtrate from the desiliconized phosphate concentrate and tailings is collected and transported to a wastewater collection tank for mixing. An oxide mixture is added to the mixed wastewater and stirred until homogeneous. The mixture is then pumped sequentially into a two-stage series photo-ozone reactor to oxidize the organic matter in the wastewater. After the treated water sample meets the standards, it is returned to the phosphate rock flotation demagnesium removal process. The wastewater treatment system includes a wastewater collection tank, an oxide mixture addition tank, a mixing tank, a two-stage series photo-ozone reactor, and a qualified wastewater storage tower. This wastewater treatment process not only achieves efficient wastewater treatment without secondary pollution but also allows for reuse in the phosphate rock flotation demagnesium removal process, improving the practicality and stability of the wastewater treatment process and demonstrating promising application prospects.