Effects of Membrane Concentration Processes on Flux, Nutrient Recovery, and Antibiotic Isolation for Anaerobically Digested Slurry from Swine Manure

2020 ◽  
Vol 63 (6) ◽  
pp. 1639-1647
Author(s):  
Caide Yue ◽  
Hongmin Dong ◽  
Wanqin Zhang ◽  
Zhiping Zhu ◽  
Fubin Yin ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Ceramic Membrane ◽  
Swine Manure ◽  
Pollutant Removal ◽  
Nutrient Recovery ◽  
List Type ◽  
High Nutrient ◽  
Anaerobically Digested Slurry ◽  
Processing Stability ◽  
Membrane Concentration

HighlightsThree membrane concentration processes for anaerobically digested (AD) slurry were investigated.With regard to processing stability and efficiency, NF-RO was recommended for AD slurry concentration.Membrane concentration enables the synchronous recovery of nutrients and removal of antibiotics in AD slurry.Abstract. Membrane concentration processes have been used to treat anaerobically digested (AD) slurry for nutrient recovery and pollutant removal; however, these methods often face the challenges of low processing stability and efficiency. In this study, the performance (processing stability and efficiency) of three membrane concentration processes, including nanofiltration (NF), reverse osmosis (RO1) and two-stage NF-RO (NF-RO2), in treating ceramic membrane-pretreated swine manure AD slurry was evaluated and compared. Nutrient and antibiotic redistribution in the concentrate and permeate was also investigated. Results show that NF-RO2 had higher processing stability and efficiency than the other two processes. High nutrient recoveries of 61.9% for total nitrogen, 56.3% for total phosphorus, and 67.0% for potassium in the concentrates were observed in NF-RO2. The removal rates for antibiotics sulfamethazine and oxytetracycline in NF-RO2 were 99.3% and 81.9%, respectively. Therefore, NF-RO is an effective way to recover nutrients and remove pollutants from AD slurry. Keywords: Antibiotic flow, Nanofiltration, Nutrient flow, Reverse osmosis, Swine manure.

Application of Ceramic Membrane Technology in Tungsten Fine Particle Concentration Process

2014 ◽  
Vol 692 ◽  
pp. 191-199
Author(s):  
Wan Fu Huang ◽  
Xiao Feng Wang ◽  
Xin Dong Li ◽  
Si Ming Yan
Keyword(s):  
Fine Particle ◽  
Particle Concentration ◽  
Fine Particles ◽  
Ceramic Membrane ◽  
Membrane Technology ◽  
Factors Affecting ◽  
Membrane Flux ◽  
Concentration Test ◽  
Optimal Effect ◽  
Membrane Concentration

This study used ceramic membrane technology to concentrate tungsten fine particles for its inefficient recycling issue. Factors affecting the membrane concentration test were discussed, and the results show that: under the feed flow of 7000 mL/min, concentration time of 3 hours, and concentration liquid flow of 500 mL/min, it is the optimal effect of ceramic membrane concentration tungsten fine particle, which the interception rate reaches more than 99%, the membrane permeation flux can be nearly reach 470mL/(min×1099cm2) above, and concentrate concentration can be basically stable at around 29% . Ceramic membrane flux recovery rate can be as high as 93% by 7 minutes backwashing firstly and then 2 minutes forward cleaning.

Membrane Concentration of Orange Juice

1989 ◽  
Author(s):  
Stephen Cross
Keyword(s):  
Reverse Osmosis ◽  
Orange Juice ◽  
Design Selection ◽  
Membrane Concentration

A process to concentrate orange juice to levels above 42° Brix with quality close to fresh juice is discussed. Using ultrafiltration and reverse osmosis in a patented process, concentrate of superior quality can be produced. An overview of how membrane characteristics influence the design, selection and operation of the process is presented along with operating economics. Paper published with permission.

scholarly journals Phosphorus Runoff from Soils Receiving Liquid Dairy and Swine Manures Amended with Mine Drainage Residual

2021 ◽  
Vol 37 (2) ◽  
pp. 351-358
Author(s):  
Clinton D. Church ◽  
Robert S. Hedin ◽  
Ray B. Bryant ◽  
Amy G. Wolfe ◽  
John T. Spargo ◽  
...  
Keyword(s):  
Mine Drainage ◽  
Agricultural Soils ◽  
Swine Manure ◽  
Land Application ◽  
Dairy Manure ◽  
Field Conditions ◽  
List Type ◽  
Simulated Rainfall ◽  
Nutrient Runoff ◽  
Manure Slurry

HighlightsConcern over nutrient runoff from agriculture has prompted research to limit phosphorus (P) mobility.Mine drainage residuals (MDRs) can reduce phosphorus solubility in soils, sediments and liquid manure slurries.MDR amendment resulted in lower dissolved phosphorus in runoff from sites treated with dairy manure slurry, but not with swine manure slurry.This study underscores the value of testing under field conditions before making recommendations.Abstract. Concern over nutrient runoff from agriculture has prompted considerable research on amendments to limit phosphorus (P) solubility of manure slurries and P mobility following land application of the slurry. The concept of solving one industry’s problem with another industry’s problem is attractive, but successful examples are uncommon. Mine drainage residual (MDR), generated from the process of neutralizing acid discharge from coal mines, has been shown to reduce soluble P in soils, sediments and manure slurries. We therefore sought to test whether amending manure slurries with MDR was effective at reducing P in runoff once that slurry was applied to agricultural soils. A series of simulated rainfall experiments revealed that amending dairy manure slurry with MDR resulted in significantly less flow weighted dissolved P concentrations and loads in runoff. However, the same effect was not observed with runoff from soils amended with swine manure slurry, despite a greater reduction of water extractable P in swine manure slurry with MDR addition than in dairy manure slurry. This study underscores the value of testing amendments under field conditions before making manure management recommendations. Keywords: Manure, Phosphorus, Mine drainage residual, Engineered treatment, Simulated rainfall.

scholarly journals A pilot plant study using ceramic membrane microfiltration, carbon adsorption and reverse osmosis to treat CMP (chemical mechanical polishing) wastewater

2004 ◽  
Vol 4 (1) ◽  
pp. 111-118 ◽  
Author(s):  
R. Lo ◽  
S.-L. Lo
Keyword(s):  
Reverse Osmosis ◽  
Chemical Mechanical Polishing ◽  
Pilot Plant ◽  
Treatment Process ◽  
Ceramic Membrane ◽  
Scale Up ◽  
Mechanical Polishing ◽  
Chemical Coagulation ◽  
Sedimentation Process ◽  
Carbon Adsorption

Currently, most semi-conductor plants adopt the conventional chemical coagulation and sedimentation process to treat chemical mechanical polishing (CMP) wastewater. This treatment process consumes a large quantity of coagulants, and its optimum pH operation range is rather narrow. This treatment process produces huge amounts of sludge and is hard to operate due to the unstable characteristics of the abrasive slurry of CMP wastewater. The purpose of this research is to establish a pilot plant which consists of chemical pretreatment, ceramic membrane microfiltration, carbon filtration and reverse osmosis system, which will allow the reclamation of the CMP wastewater. Actual CMP wastewater was sampled and treated in the pilot plant. The results of the pilot tests demonstrated the viability of the treatment scheme and provided data for scale-up calculations. Cost per ton of CMP wastewater reclaimed was calculated using the operating data established, and compared with the conventional chemical coagulation and sedimentation process.

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