Solar powered method and system for sludge treatment

a solar energy and sludge technology, applied in the field of solar energy-powered sludge treatment systems, can solve problems such as world-wide problems, and achieve the effects of reliable and comprehensive, high throughput, and green energy production

Inactive Publication Date: 2011-12-29
ARROW OPERATIONS & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0009]The inventors of the present invention have surprisingly found that by employing a system combining a thermo-regulated sensor, a solar tower and a pyrolysis reactor connected to a high throughput sludge dewatering device they can produce green energy from sludge using solar power. This system is emission free due to high

Problems solved by technology

The spread of increasing amounts of waste biomass, such as wastewater sludg

Method used

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  • Solar powered method and system for sludge treatment
  • Solar powered method and system for sludge treatment
  • Solar powered method and system for sludge treatment

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Embodiment Construction

[0026]Reference is now made to FIG. 1 providing a schematic illustration of a sludge treatment system 100 in accordance with one embodiment of the invention. The sludge treatment system comprises a dumping funnel 102 for introducing sludge into the system. The dumping funnel has a top opening 104 for receiving the sludge and a bottom opening 106 for discharging the sludge onto a conveyor 110. While not illustrated in FIG. 1, the conveyor 110 may be adapted to remove an amount of liquid, typically water, from the sludge, to obtain a partially dewatered sludge comprising between 40-60% of initial weight. Typically, dewatering is carried out at temperatures of up to 400° C. yielding dewatered sludge ready for pyrolysis. Dewatering can be achieved, for example, by the use of a hot air blower or a spiral press conveyor. Liquid (typically water) removed from the sludge may be collected and directed for re-use (not illustrated). Conveyor 110 is connected dewatering unit 120 and is configur...

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Abstract

A solar-powered device for converting sludge into one or more products is disclosed. The device includes a pyrolysis reactor selectively operable by solar energy, for carrying our thermal decomposition, into one or more products, of sludge introduced into the reactor via a dedicated sludge inlet. The reactor includes at least one outlet for discharging from the reactor one or more products obtained from the sludge decomposition. The device also includes a sensor for sensing sunlight radiation and providing an output data indicative of the amount of solar energy corresponding to the sensed sunlight, and a control unit for receiving the output data and operating or shutting down the pyrolysis reactor based on the amount of solar energy generated from the sunlight.

Description

FIELD OF THE INVENTION[0001]This invention relates to a system and method for sludge treatment.BACKGROUND OF THE INVENTION[0002]The spread of increasing amounts of waste biomass, such as wastewater sludge or sewage sludge, pose a worldwide problem associated with their disposal. Composting, direct land-filling, compression / concentration, liquid extraction and thermal treatment (incineration, gasification or pyrolysis) are some of the available for biomass treatment.[0003]Pyrolysis is widely used for biomass conversion, utilizing heat to chemically decompose the organic materials in the biomass.[0004]U.S. Pat. No. 3,993,458 describes a method for producing gases such as H2, CO, CH4 and CO2 by pyrolysis organic solid waste, the method comprising subjecting, in a reactor, the organic solid waste to steam at elevated temperatures allowing the chemical decomposition (pyrolysis) to take place. The elevated temperatures are obtained by the use of solar heating by means of a solar top furna...

Claims

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Application Information

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IPC IPC(8): C10B23/00C10B49/00
CPCY02E50/343C05F7/00Y02E50/30Y02W30/40Y02P20/133Y02A40/20
Inventor ZADIK, BOAZISRAEL, FAIG
Owner ARROW OPERATIONS & TECH
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