Water and wastewater treatment system

Details Water and wastewater treatment system Water and wastewater treatment system

1992-06-01

1993-08-31

Lithgow, Thomas M.

Liquid purification or separation

With gas separator

2101951, 2101953, 210197, 210205, 210258, 210259, 210260, 210266, 210295, 210525, 210615, 261DIG75, 261 221, 210624, 210631, 210707, C02F 322, C02F 326, C02F, B01F 304

Patent

active

052406008

ABSTRACT:
A biological treatment system involving the use of a gas dissolving pressure vessel, a pressurized water release assembly, a pretreatment chamber, a bioreactor, an open vessel, a post-treatment unit, a sludge removal unit, and a removable gas collection and purification unit for both wastewater treatment and air emission control is described. Gases are dissolved efficiently in a water inside the pressure vessel under controlled high pressure and high rotating velocity. Chemicals, or microorganisms, or both arm dosed to an influent water producing a pretreated water containing chemical flocs and biological flocs. The bioreactor comprising a hanging biological contactor is adopted when biochemical reaction is intended. A pressurized water containing supersaturated gases is produced in the pressure vessel and than depressurized through the pressurized water release assembly becoming a depressurized water containing micro bubbles. The pretreated water containing chemical flocs or biological flocs, or both are gently mixed and held together with the depressurized water containing micro bubbles in the open vessel for separation of chemical/biological flocs to the water surface, producing a purified effluent and a waste gas. A portion of the purified effluent is recycled for gas dissolution and micro bubbles production. When necessary, the waste gas is collected, purified and recycled to the pressure vessel or the bioreactor, or both for reuse.

REFERENCES:
patent: 1667265 (1928-07-01), Boving
patent: 1937437 (1933-11-01), Piatt
patent: 1971852 (1934-08-01), Goebels
patent: 3118958 (1964-01-01), White
patent: 3400818 (1968-09-01), Tarjan
patent: 3775314 (1973-11-01), Beitzel et al.
patent: 3820659 (1974-06-01), Parlette
patent: 4022696 (1977-05-01), Krofta
patent: 4215081 (1980-07-01), Brooks
patent: 4303517 (1981-12-01), Love et al.
patent: 4333829 (1982-06-01), Walther
patent: 4377485 (1983-03-01), Krofta
patent: 4626345 (1986-12-01), Krofta
patent: 4673494 (1987-06-01), Krofta
patent: 4735709 (1988-04-01), Zipperian
patent: 4838434 (1989-06-01), Miller et al.
patent: 4931175 (1990-06-01), Krofta
patent: 5049320 (1991-09-01), Wang et al.
patent: 5064531 (1991-11-01), Wang et al.
patent: 5068031 (1991-11-01), Wang et al.
patent: 5069783 (1991-12-01), Wang et al.
patent: 5078861 (1992-01-01), Krofta
patent: 5084165 (1922-01-01), Wang et al.
patent: 5167806 (1992-12-01), Wang et al.
The U.S. Dept. of Commerce, National Technical Information Service (NTIS) Report #PB-86-194198/AS, by L. K. Wang 15 pages, Nov. 1985.
Journal American Water Works Assocation, Jun. (1982) ny M. Krofta & L. W. Wang.
Water Treatment, vol. 6, pp. 127-146 (1991) by L. K. Wang.

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