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Facility Detail

Guangdong Hazardous Waste Comprehensive Treatment Demonstrative Center
(No known alias)
CHWMEG Report Number: H935.0

City, State/Prov, Country:Huizhou, Guangdong, China

Member Interest: This facility is currently being tracked by 3 members
(Member interest is not related to how many members use this facility.)

*Location Map:Google Maps

Review Program
(Visit Date):

There are 1 more reviews conducted prior to 2012 not shown.

Description of Services:By current Guangdong Environmental Protection Bureau approval, the facility is approved to treat/dispose of 47 of the 49 waste categories listed in the China National Classification of Hazardous Wastes - only HW15 (explosive waste) and HW19 (metallic carbonyl compound) are prohibited, and medical wastes are also not accepted for treatment/disposal at this time. Besides storage and consolidation, the facility operations include:
  • Physical-Chemical Treatment The plant consists of a variety of treatment tanks and reactors for the treatment of a variety of wastes, including emulsions, waste acid and alkali, chromium wastes, cyanide waste, leachate, etc. The PCT operation is divided into two sub-systems: a pretreatment system and a continuous alkaline precipitation system. There are five pre-treatment systems: acid/alkali neutralization, oxidation, reduction, organic waste water treatment, and chlorine waste water treatment. Based on the characteristics, the wastes are treated in the system to remove the major hazardous substances, and then subject to treatment in the continuous alkaline precipitation system. The PCT wastewater will then be transferred to the wastewater treatment plant for further treatment. The sludges generated from the PCT are dewatered, stabilized, and disposed in the onsite landfill.
  • Wastewater Treatment Wastewater (mainly sewage, leachate, first flush storm water, and effluent from physical/chemical treatment) is subject to equalization in a large tank and then transferred to anaerobic and aerobic treatment tanks to degrade the organic pollutants. The wastewater is then transferred into sedimentation tanks for pH adjustment and precipitation of inorganic pollutants. The wastewater goes through sand filters and activated carbon beds for further polishing prior to reuse onsite. Sludge from the wastewater treatment process is dewatered in a filter press and sent to the onsite landfill.
  • Stabilization A stabilization recipe is developed for each batch of waste based on its properties. The reagents are automatically fed into waste blenders to ensure sufficient mixing and chemical reaction with the wastes. Each batch is then subject to testing to ensure that the stabilized material meets the requirements for on-site landfill disposal.
  • Incineration The 13,700 m2 incinerator complex at the site uses rotary kiln technology and has a capacity of 10,000 tons per year (30 tons per day). The system is composed of three main parts: waste pretreatment and feeding system; combustion system; and the flue gas treatment system. The waste pretreatment and feeding system includes eight different ways to feed high calorific waste into the incinerator - 3 for solid wastes and 5 for liquid wastes. All wastes are initially blended (primarily through mixing with loading equipment), and then are fed into the 3 meter diameter x 10 meter long rotary kiln for initial treatment, followed by a secondary combustion chamber. The flue gas will then enter a waste heat boiler to generate steam for internal use. The flue gas enters a gas scrubbing system to remove the acid substances, is then subject to activated carbon injection to control dioxin emissions, and then finally the gas is subject to bag house filtration to control dust emissions prior to discharge up the stack. The system is also equipped with an on-line continuous emissions monitoring system.
  • Secure Landfill Disposal The designated landfill area is 106,000 m2, of which approximately 32,000 m2 has been developed to date with a capacity of 308,000 m3. The landfill design has an estimated design life of 52 years. The landfill liner system consists of two HDPE liners as well as a geosynthetic clay liner (GCL). There is a line leachate collection system. Leachate is treated in the on-site wastewater plant and reused on-site.

Description Date:2009 Facility Review Program

Facility Location Map:

*CHWMEG, Inc. cannot guarantee the accuracy of the maps. Maps are for informational purposes only. The latitude and longitude for this map are from the most recent CHWMEG facility review.