diatomite dewatering optimization

Mechanical Optimization of Diatomite Monoliths …

Mechanical Optimization of Diatomite Monoliths from Freeze Casting for High-Throughput Applications. Sean N. Garner*, Zhixiong Li., Doheon Lee., Olivia A. Graeve., Dimitri D. …

Comprehensive evaluation of sewage sludge dewatering …

2.2.scCO 2 treatment procedure. Based on previous researches, pressure, temperature and time were the major parameters that influenced the dewatering effect of SS by scCO 2 [17, 18].A series of single-factor bench-scale experiments and an orthogonal experiment were conducted at various combinations of pressure (10, 15, 20 MPa), …

An approach utilizing the Response Surface Methodology …

Saudi Arabian's natural diatomite samples were subjected to physical adsorption–desorption characterizations using Brunauer-Emmet-Teller (BET) and the Barrett-Joyner-Halenda (BJH), performed under heating of 140 °C for different periods of hours: 6, 12, 18, and 24 h, to create a central optimization design with surface areas …

Fast history matching and optimization using a novel …

Fast history matching and optimization using a novel physics-based data-driven model: An application to a diatomite reservoir with hundreds of wells. Author links open overlay panel X. Guan a, ... In this section, an application of the updated GPSNet framework to a 307-well sector of a diatomite reservoir in San Joaquin Valley (denoted …

Dewatering of Chlorella pyrenoidosa using a …

The aims of this study are to investigate the performances of both the diatomite dynamic membrane (DDM) technology, used for algae dewatering during a …

Dewatering of Chlorella pyrenoidosa using diatomite …

The diatomite dynamic membrane (DDM) was utilized to dewater Chlorella pyrenoidosa of 2 g dry weight/L under continuous-flow mode, whose ultimate algae concentration ranged from 43 g to 22 g dry weight/L of different culture time. The stable flux of DDM could reach 30 L/m(2) h over a 24 h operation …

Critical review on dewatering of sewage sludge

Sewage sludge (mainly composed of excessive bio-sludge) is an inevitable by-product of biological wastewater treatment process and contains various toxic substances, such as pathogens, heavy metals, and organic contaminants.The production of sewage sludge may cause serious pollution risks without appropriate disposals. As the …

Enhancing the Dewatering Ability of Sludge by Locally

3.1 Morphological Characteristics. In Fig. 2, morphological characteristics of sludge and biochar are presented.The raw sludge (Fig. 2a) has a denseness within the sludge cake, which acts like a barrier to the flow of water during the mechanical dewatering of the sludge.In contrast, on conditioning the sludge with MCSB-FeCl 3 (Fig. 2b), due to …

Enhancing the photocatalytic elimination of acephate

NiO nanoparticles were synthesized and modified with Ni 0 in the form of Ni/NiO blend and supported on a porous diatomite substrate, forming hybrid structures of NiO/D and Ni@NiO/D with enhanced photocatalytic performances. The obtained structures were applied for the effective oxidation of acephate pesticides under visible light.

Diatomite Dynamic Membrane Fouling Behaviour …

This study investigated diatomite dynamic membrane (DDM) fouling behaviour during the dewatering of Chlorella pyrenoidosa under the influence of copper …

Diatomite: Its Characterization, Modifications and …

Diatomite products are used in a variety of ways, such as reinforcing, stiffening and hardening of organic solids, reducing adhesion between solid surfaces, increasing …

Dewatering of Chlorella pyrenoidosa using diatomite

The diatomite dynamic membrane (DDM) was utilized to dewater Chlorella pyrenoidosa of 2g dry weight/L under continuous-flow mode, whose ultimate algae concentration ranged from 43g to 22g dry ...

Combined Simulation-Optimization of an Excavation Site for Dewatering …

Optimal decision of dewatering of an excavation area in an unconfined aquifer is searched by using the combined optimization-simulation approach. In combining groundwater model with the optimization model, response matrix approach, generated on the basis of linear superposition, is used. MODMAN that calls MODFLOW repeatedly to generate response …

Multi-Objective Optimization Design and Test of Compound Diatomite …

The results revealed that the addition of diatomite and basalt fiber can significantly increase the VV of asphalt mixture, and reduce γ f and VFA; the optimal performance of the asphalt mixture at high- and low-temperature are achieved with 14% diatomite, 0.32% basalt fibers and 5.45% asphalt-aggregate ratio. Moreover, the porous …

Groundwater dewatering optimization in the Shengli no. 1 …

The results indicate that the dewatering optimization procedure developed in this paper can serve as a useful template and framework for solving mining related water problems. Sketch map of ...

Diatomite Dynamic Membrane Fouling Behaviour during Dewatering …

This phenomenon can explained be the fact that the support membrane used in this study had an average aperture of 200–300 mesh, equal to a pore size of 75 mm, despite the diatomite layer and algae layer which form during DDM dewatering, as only part of the macro-organic matter can be rejected, whereas most of the organics …

Diatomite Dynamic Membrane Fouling …

Abstract: Combined microalgal and membrane filtration could effectively treat aquaculture wastew-ater; however, the membrane fouling induced by extracellular organic matter …

Enhanced Dewatering of Activated Sludge by Skeleton …

Sludge dewatering is the fundamental process of sludge treatment. Environmentally friendly and efficient sludge conditioning methods are the premises of sludge to achieve dehydration reduction and resource utilization. In response to sewage plant sludge dehydration, fly ash (FA), polymerized aluminum chloride (PAC), and …

diatomite dewatering optimization

Optimization of heat-sealing properties for antimicrobial ... Optimization of heat-sealing properties for antimicrobial soybean protein isolate film incorporating diatomite/thymol complex and its application on blueberry packaging Food Packaging and Shelf Life ( IF 6.429) Pub Date :, DOI: 10.1016/j.fpsl.2021.100690. اقرأ أكثر

Optimization of heat-sealing properties for

Optimization of heat-sealing properties for antimicrobial soybean protein isolate film incorporating diatomite/thymol complex and its application on blueberry packaging ... Ltd. (Shanghai, China). Diatomite (CAS number 6), sodium hydroxide, glycerol and ethanol were all in analytical reagent grade and were obtained …

Diatomite Dynamic Membrane Fouling Behaviour during Dewatering …

Combined microalgal and membrane filtration could effectively treat aquaculture wastewater; however, the membrane fouling induced by extracellular organic matter (EOM) during the dewatering process is an issue. This study investigated diatomite dynamic membrane (DDM) fouling behaviour during the dewatering of Chlorella …

Magnetic-Nanoflocculant-Assisted Water–Nonpolar Solvent Interface …

Exploitation of magnetic flocculants is regarded as a very promising energy-saving approach to microalgae harvesting. However, its practical applicability remains limited, mainly because of the problem of the postharvest separation of magnetic flocculants from microalgal flocs, which is crucial both for magnetic-flocculant recycling and high-purity …

Dewatering of Chlorella pyrenoidosa using a diatomite …

Fig. 1 (a) shows the flux and R c changes during the first 240 min of filtration. Similar to the results of the 24-h operation, the flux change experienced a rapidly declining stage (ΔF>1.0), a slowly declining stage (0.1<ΔF<1.0) and then a comparatively stable stage (ΔF<0.1).The flux decline of the 2-day group was less severe than that of the 6- and 10 …

Research on the coagulant aid effects of modified diatomite …

However, natural diatomite used directly as a conditioner cannot fully meet the demands of sludge dewatering and the environment. Pore size distribution, impurity content, and bulk density are the ...

Research on Multi-Objective Optimization Model of …

This study focuses on optimizing the foundation pit dewatering scheme using the foundation pit dewatering theory and the principles of multi-objective optimization. It explores the development of a multi-objective optimization model and efficient solution technology for foundation pit dewatering. This research focuses on the …

Dewatering of Chlorella pyrenoidosa using diatomite …

The diatomite dynamic membrane (DDM) was utilized to dewater Chlorella pyrenoidosa of 2 g dry weight/L under continuous-flow mode, whose ultimate algae concentration ranged from 43 g to 22 g dry weight/L of different culture time.The stable flux of DDM could reach 30 L/m 2 h over a 24 h operation time without backwash. Influences …

Diatomite Dynamic Membrane Fouling Behaviour during Dewatering …

This study investigated diatomite dynamic membrane (DDM) fouling behaviour during the dew … Combined microalgal and membrane filtration could effectively treat aquaculture wastewater; however, the membrane fouling induced by extracellular organic matter (EOM) during the dewatering process is an issue.

Diatomite Dynamic Membrane Fouling Behaviour during Dewatering …

Diatomite Dynamic Membrane Fouling Behaviour during Dewatering of Chlorella pyrenoidosa in Aquaculture Wastewater ... 18, and 24 hours, to create a central optimization design with surface areas ...

Application of Advanced Oxidation Technology in Sludge …

Sludge dewatering is an important link in sludge treatment. In practical engineering, the dewatering effect of unconditioned sludge is very poor. The use of advanced oxidation technology can improve sludge dewatering performance, reduce sludge capacity, and remove micro-pollutants, which is beneficial for sludge post …

Efficient photodegradation of paraquat herbicide over …

Under optimized operation conditions, the experimental removal eficiency of paraquat reached 97.1 and 80% using UV and simulated solar light, respectively. Moreover, the reusability results confirm the sustained activ-ity of the T25-W5/Di nanocomposite. Keywords TiO2-WO3 · Type II heterojunction · Diatomite · Paraquat photodegradation ...