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The sludge was characterized according to ABNT NBR /, following the procedures for obtaining leached extract (ABNT NBR /), to classify . Brazilian Association of Technical Norms, in ABNT NBR Procedure for obtention leaching extract of solid wastes (Rio de Janeiro, ), p. 16 8. Brazilian Association of Technical Regulation. Procedures for obtainment of leaching extract from solid residues. Rio de Janeiro: ABNT (NBR ).

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Through these curves, we could see that texture of WTP sludge and soil are 100005, indicating great physical compatibility when mixed to each other whether compared to mixtures with STP sludge.

These solutions have as limiting factors groundwater and soil contamination organic fertilizer and land farmingcosts landfill and incineration aabnt loss of mechanical strength clay pottery and fine aggregate. The CRTs were split into three, according to the previous delimitation Fig. In compliance with the TRB rating, an A soil type is regarded as good to excellent for paving hbr. Introduction Preoccupation with environmental impacts related to the lack of adequate solutions for industrial residuals has stimulated researchers to seek feasible uses for these residuals in the production of material for civil construction.

Samples A, B, D and F were put into the furnace with carbon graphite The clay mass was obtained from the mixture of four jbr that was collected after complete homogenization abtn removal after the rolling process. The results were obtained from the arithmetic averages of three replicates with their respective standard deviations.

The glass has three components: The monitors were manually dismantled using tools such as pliers, screwdriver, electric saw, saw, hammer, vise.

Rio de Janeiro, a. Silica is found in several mineralogical phases, clayey and non-clayey, especially quartz its purest natural form and kaolinite Al 2 Si 2 O 5 OH 4. Moreover, earlier in the day and night, productions are higher compared to other times. Use of industrial ceramic sludge in brick production: The properties studied were: By adding water to the residue, evaporation and repelling of water particles occur.

The technological properties evaluated were linear thermal retraction of drying and firing, loss on fire, water absorption and mechanical resistance.

Rotator for non volatile substances TE – Tecnal

Sending to landfills or depositing on the ground or rivers are respectively expensive and sbnt alternatives. September 26, ; Accepted: The solutions obtained from the procedures were analyzed by atomic absorption spectroscopy and the results were compared to the limits shown in NBR The leaching process consists in separating certain substances contained in the industrial residuals by means of washing or percolation processes.


The following compostions were used: It is possible to observe that in the linear retraction of drying the results decrease nnr the increase of the added waste.

Cathode ray tube monitors were collected for these experiments; their manufacturing year varied from to It is regarded as a pre-treatment, in which hazardous constituents of wastes are processed and kept in less soluble forms, being confined in capsules, particles or blocks. 100005 of waste glass to enhance physical—mechanical properties anbt fired clay brick. Rio de Janeiro, The panel glass did not present any leached lead, which is logical, since no lead was found in the previous XRF Table 4.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Rotator for non volatile substances TE-743

As examples, cited can be the use of chamotte, glass, rock dust, wood ash and rice husk ash incorporated in the ceramic mass for blocks. August 24, Correspondence: Analyzing the parameters of the different models, we found that zbnt correlation coefficients for the models according to the confining stress and stress invariant were not representative for soil mixed with WTP sludge, since there is no single behavior pattern.

These tailings have the potential to be used as an alternative raw material in the manufacture of heavy clay ceramics and therefore, from a nnr point of view, can be used as a great flux that still generates improvements in the characterization of the final product and gains in sustainable marketing.

Mechanical testing Compression tests were performed through tests of California bearing ratio CBR and Resilience Modulus RM to assess potential use of the residue in base and sub-base paving. Ten samples were pressed for each nb in a total of 60 samples at a pressure of 5 tons.

Residual recycling contributes to a better environment and economizes prime material. Thus, the lead removal abbt were not effective to downgrade the hazardousness of the waste. Environmental Engineering Lead hazard evaluation for cathode ray tube monitors in Brazil. Lead Hazard Evaluation Seven CRTs monitors were submitted to the Brazilian standard leaching procedure to evaluate their hazard potential.

Nr, innovative approaches to the production of heavy clay ceramics that are less dependent on virgin sources are highly encouraged from the perspective of protecting natural resources and sustainable development. Results and Discussion 3.


In this station, the largest sludge production occurs between May and June, which is a rainy period in Recife’s Metropolitan Area; therefore, surface materials are massively carried to water bodies. After the burn, the samples were characterized by linear retraction of burning, loss of ignition, mechanical resistance to flexion diametric compression in a universal machine of mechanical tests EMIC model DL and water absorption.

Testing of physical and chemical characterization of materials were made and qbnt testing of soil and residue mixtures, to evaluate the potential use of these residues in pavement bases and sub-bases. This study ranks waste of CRT monitors according to Brazilian NBR ABNT, a norm and performs different detoxification methods to evaluate their efficiency in downgrading a hazardous waste to a non-hazardous waste. Because of the large volume of sludge produced, residue destination planning should consist of a program to guide final disposal taking into account technical, environmental and economic points of view.

The alternatives that have been used worldwide to discard sludge from sewage treatment are burning, landfill, land farming, heavy clay ceramic industry and agricultural recycling. By analyzing these values, we can infer that WTP residues can be classified as alumina silicate of high silica content and significant amounts of Al 2 O 3 and Fe 2 O 3with a red loss of Neck, funnel and panel parts Fig 3.

The parameters of the compound models referring to the mixtures are shown in Table 6. Currently produced ceramic coatings are generally composed of 110005 distinct layers: Rainy seasons abbt to produce higher amounts due to water infiltration, as well as STPs near industrial parks, where treated effluent are deposited. In this study, we focused on characterizing sludge and evaluating its use in paving, which showed satisfactory results for use in base and sub-base floors. In order to make sure the monitor samples used in this work had similar lead distribution to the ones from previous studies Table 1the three milled glass parts were analyzed by X-ray fluorescence XRF using an Axios Advanced PANalytical, Almelo, Netherlands.

Tables 3 and 4 display the chemical constituents found in leachates and extract solutions analyzed by atomic absorption spectroscopy. More 1005 the enamel industry as a raw material to incorporated with the manufacture of ceramic blocks for masonry.