Non-metal chain flight sludge scrapers installed on primary and secondary sludge settling tank in water & wastewater treatment plants. Applied high mechanical characteristics of plastics to all parts of scrapers. Provide with high tensile strength and corrosion resistance of scraper chains, over 20kN of working loads and 40kN of max. broken loads. Many references in Vietnam, China, India, Nepal, Indonesia, Taiwan, Morocco, Turkey, and Finland.
Automatic rotary trash bar screens for river water pumping station. Installed in front of water channels of pumping station and lift and discharge trash and solids from river to belt conveyors or hopper. Made of stainless steel 304 and 316, or carbon steels with tar epoxy coating resist corrosion. DWA has references in Malaysia and Thailand since 2014. Supplied and installed 32 units on 12 pumping plants at larger size, W8m x H13m, to Thailand since 2018. Fabricated and supplied 4 rotary screens, 1 horizontal belt conveyor, 1 inclined belt conveyor, trash hopper, and all platform together. New design and parts have been applied to all types of automatic rotary trash bar screens and belt conveyors by DWA..
Installs in river water pumping stations to lift up trash and solids from river water, and discharge them to belt conveyor or hopper by one gripper system travelled automatically. One gripper system replaces 4 to 8 numbers of rotary trash bar screens resulting energy saving and less investment of equipment for pumping station. The gripper system travels, travers, run down and lift in fully automatic system according to differences of water levels of each water channel. DWA has reference in Thailand in 2020.
Thermal Oxidizer Package (Incinerator Plant) for the treatment of hazardous solid waste and liquid waste, MSW, and medical waste. DWA fabricates and supplied 2 plants of thermal oxidizer packages to 2 oil and gas plants in Iran in 2011 to 2017. Capacity is 1 ton/h and combustion temperature is 900 centigrade. The system is consisted of waste input equipment, shredder, dust collector, automatic waste feeding system, rotary kiln, post combustion chamber, quencher, wet scrubber, stack, combustions fans, exhaust fans, ID fans, piping, valves, dosing pumps, centrifugal pumps, rotary gear pumps, air ducts, instrument and PLC control panels.
Sludge cake hopper for storage and discharging of sludge cake in dewatering station. Made of AISI 304 or carbon steel with tar epoxy coated. New design applied that 8 screw conveyors replacing discharge gates to discharge sludge uniformly. Water flushing system installed inside of hopper. DWA has references in Thailand, Indonesia, and Philippines contracted with major global contractors since 2020.
Incinerator equipment for the treatment of municipal solid, medical, and industrial waste. Capacity is 200kg/h with 900 centigrade of operation temperature. Applied 2 automatic on/off burners for 1st and 2nd combustion chambers. Emission gas is controlled by operator. References in Iraq and Russia. Automatic run by PLC control panel supplied together with equipment.
DWA has fabricated and supplied various types of water and wastewater treatment equipment such as bridge clarifiers, mechanical bar screens, band screens, grit separators, and other equipment since 1996. DWA has many references for mentioned equipment in Viet Tri and Hung Yen WWTP, Vietnam in 2017 to 2020.